JP5800671B2 - Connection control body for battery pack - Google Patents

Description

  The present invention is used in an assembled battery that outputs a desired voltage by connecting a plurality of unit cells in series and is connected in series with a plurality of unit cells, and also detects unit cell voltage, unit cell abnormality, The present invention relates to an assembled battery connection control body that performs voltage equalization control between unit cells based on a plurality of unit cell voltages.

  Conventionally, for example, a power supply device described in Japanese Patent Laid-Open No. 2001-345082 (Patent Document 1) has been proposed as an assembled battery connection control body that is used in an assembled battery and controls the output voltage of the assembled battery. Yes.

  This power supply device controls the output voltage based on the bus bar plate mounted on the plurality of unit cells, the connection bus bar for connecting adjacent unit cells, and the voltage detection results of the plurality of unit cells. And a control board.

  The bus bar plate has a bus bar accommodating portion that accommodates the connection bus bar, a control substrate accommodating portion that accommodates the control substrate, and an electric wire accommodating portion that accommodates a voltage detection wire for detecting the output voltage of each unit cell 2. doing.

  And the power supply device configured in this way fixes the bus bar plate to the assembled battery in which a plurality of unit cells are connected in series, connects the unit cells to each other with the connection bus bar, and the voltage detection result by the voltage detection wire Based on the above, voltage equalization control between unit cells, unit cell voltage detection, and unit cell abnormality detection are performed.

JP 2001-345082 A

  By the way, in the power supply device described above, the connection bus bar and the control board must be accommodated in the bus bar plate fixed to the assembled battery. For this reason, the control board housing part must be secured in a place other than the connection bus bar housing part, and the place where the connection bus bar and the control board are housed is limited, so that the layout cannot be freely changed. there were.

  Further, if the layout of the connection bus bar can be freely changed, there is a problem that the area of the bus bar plate has to be designed wide, and the connection control body for the assembled battery becomes large.

  Therefore, an object of the present invention is to provide an assembled battery connection control body that can improve the degree of freedom of layout and can prevent an increase in size due to a layout change.

  To achieve the above object, the connection controller for an assembled battery according to the first aspect of the present invention is used in an assembled battery that connects a plurality of unit cells in series and outputs a desired voltage. A plurality of unit cells connected in series, unit cell voltage detection, unit cell abnormality detection, voltage equalization control between cells based on a plurality of unit cells, A bus bar plate comprising a case main body mounted on each unit cell and having a bus bar accommodating portion and a substrate accommodating portion; a connection bus bar that is accommodated in the bus bar accommodating portion and connects adjacent unit cells; and the substrate A unit cell voltage that is housed in the housing unit, an abnormality in the unit cell, a control board that controls an output voltage based on each voltage detection result of the plurality of unit cells, the bus bar housing unit and the bar Characterized in that the possibility to the substrate receiving portion folded over said substrate receiving portion on the bar accommodating portion is formed by a hinge which connects the busbar accommodating portion.

  The connection control body for an assembled battery according to claim 2 of the present invention is the connection control body for an assembled battery according to claim 1, comprising a voltage detection terminal for detecting the voltage of each unit cell, and the case. The main body is provided with a voltage detection line derivation unit for deriving a voltage detection wire drawn out from the voltage detection terminal together with the voltage detection terminal to the control board side between the two bus bar housing portions. .

  The connection control body for an assembled battery according to a third aspect of the present invention is the connection control body for an assembled battery according to the first or second aspect, wherein the substrate housing portion is a stack of a plurality of the unit cells. It extends from the said bus-bar accommodating part through a hinge along the direction, It is characterized by the above-mentioned.

  A connection control body for an assembled battery according to a fourth aspect of the present invention is the connection control body for an assembled battery according to any one of the first to third aspects, wherein the bus bar accommodating portion of the bus bar plate is provided. It has an insulating cover body that covers and is disposed between the bus bar housing portion and the substrate housing portion.

  According to the battery pack connection controller of the present invention described in claim 1, the bus bar plate is connected to the bus bar housing portion and the bus bar housing portion so that the board housing portion can be folded over the bus bar housing portion. It is formed with a hinge. For this reason, it is not necessary to secure a space for accommodating the control board in the bus bar accommodating portion, and the layout of the connection bus bar can be freely changed in the bus bar accommodating portion.

  In addition, since the layout of the connection bus bar can be freely changed, it is not necessary to design a large area of the bus bar plate in accordance with the layout change of the connection bus bar, thereby preventing the connection control body for the assembled battery from being enlarged. Can do.

  Therefore, it is possible to provide an assembled battery connection control body that can improve the degree of freedom of layout and can prevent an increase in size due to a layout change.

  According to the connection control body for an assembled battery of the present invention described in claim 2, the voltage detection line for leading the voltage detection wire drawn from the voltage detection terminal between the two bus bar accommodating portions to the control board side in the case body. A derivation unit is provided. For this reason, it is possible to prevent the voltage detection electric wire from being pulled out from the voltage detection terminal when the substrate storage portion is folded on the bus bar storage portion.

  According to the battery pack connection control body of the present invention described in claim 3, the substrate housing portion extends from the bus bar housing portion via the hinge along the overlapping direction of the plurality of unit cells. For this reason, a board | substrate accommodating part can be easily folded on a bus-bar accommodating part, and the enlargement of the connection control body for assembled batteries can be prevented.

  According to the connection control body for an assembled battery of the present invention described in claim 4, the bus bar housing portion of the bus bar plate is covered, and the insulating cover body is disposed between the bus bar housing portion and the substrate housing portion. For this reason, it is not necessary to cover a board | substrate accommodating part with an insulating cover body, and reduction of a manufacturing cost can be aimed at by reducing a number of parts.

  ADVANTAGE OF THE INVENTION According to this invention, the freedom degree of a layout can be improved and the connection control body for assembled batteries which can prevent the enlargement accompanying a layout change can be provided.

It is a perspective view which shows the structure of the connection control body for assembled batteries which concerns on 1st Embodiment of this invention. It is an expansion perspective view which shows the structure of the connection control body for assembled batteries which concerns on 1st Embodiment of this invention. It is a perspective view which shows the voltage detection terminal which concerns on 1st Embodiment of this invention. It is a perspective view which shows the state which mounted | wore the insulation cover which comprises the connection control body for assembled batteries which concerns on 1st Embodiment of this invention. It is a perspective view which shows the state which folded the board | substrate accommodating part which comprises the connection control body for assembled batteries which concerns on 1st Embodiment of this invention on the bus-bar accommodating part. It is sectional drawing cut | disconnected along the VI-VI line in FIG. FIG. 4 shows an assembled battery connection control body according to a second embodiment of the present invention, wherein (a) is a perspective view showing the assembled battery connection control body and the first connection control body, and (b) is a diagram illustrating a board housing portion as a bus bar. It is a perspective view which shows the state folded up on the accommodating part. It is a perspective view which shows the structure of the connection control body for assembled batteries which concerns on 2nd Embodiment of this invention, and shows the state before mounting | wearing with an insulating cover. The structure of the connection control body for assembled batteries which concerns on 2nd Embodiment of this invention is shown, (a) is a perspective view which shows the connection control body for assembled batteries, and a 2nd connection control body, (b) is the connection for assembled batteries It is a perspective view which shows the state which mounted | wore the insulation cover which comprises a control body. The structure of the connection control body for assembled batteries which concerns on 2nd Embodiment of this invention is shown, (a) is the voltage detection terminal and control board which comprise the connection control body for assembled batteries which concerns on 2nd Embodiment of this invention. The perspective view which shows the connection of (b) is a perspective view which shows the state which mounted | wore the insulation cover which comprises the connection control body for assembled batteries in the connection state shown to (a). The structure of the connection control body for assembled batteries which concerns on 3rd Embodiment of this invention is shown, (a) is a perspective view which shows the connection control body for assembled batteries and 1st connection control body which concern on 3rd Embodiment of this invention. (B) is a perspective view which shows the state which folded the board | substrate accommodating part which comprises the connection control body for assembled batteries which concerns on 3rd Embodiment of this invention on the bus-bar accommodating part. The structure of the connection control body for assembled batteries which concerns on 3rd Embodiment of this invention is shown, (a) is the voltage detection terminal and control board which comprise the connection control body for assembled batteries which concerns on 3rd Embodiment of this invention. The perspective view which shows the connection of (b) is a perspective view which shows the state which mounted | wore the insulation cover which comprises the connection control body for assembled batteries in the connection state shown to (a). The structure of the connection control body for assembled batteries which concerns on 4th Embodiment of this invention is shown, (a) is a perspective view which shows the connection control body for assembled batteries which concerns on 4th Embodiment of this invention, and a 1st connection control body. (B) is a perspective view which shows the state which folded up the board | substrate accommodating part which comprises the connection control body for assembled batteries which concerns on 4th Embodiment of this invention on the bus-bar accommodating part. The structure of the connection control body for assembled batteries which concerns on 4th Embodiment of this invention is shown, (a) is a voltage detection terminal and control board which comprise the connection control body for assembled batteries which concerns on 4th Embodiment of this invention. The perspective view which shows the connection of (a), (b) is a perspective view which shows the state which mounted | wore the insulation cover which comprises the connection control body for assembled batteries in the connection state shown to (a).

  Hereinafter, an assembled battery connection control body according to an embodiment of the present invention will be described with reference to the drawings.

<First Embodiment>
First, with reference to FIG. 1, the structure of the connection control body for assembled batteries which concerns on 1st Embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing a configuration of an assembled battery connection control body according to the first embodiment of the present invention.

  As shown in FIG. 1, an assembled battery connection control body 1 according to the first embodiment of the present invention is used in an assembled battery 3 that outputs a desired voltage by connecting a plurality of unit cells 2 in series. The unit cell 2 is connected in series, and voltage equalization control between the cells based on the plurality of unit cells is performed. The battery pack connection control unit 1 detects unit cell voltage and unit cell abnormality.

  As shown in FIG. 2, the battery pack connection control body 1 includes a bus bar plate 11 placed on a plurality of unit cells 2 and an insulating cover body 21 that covers a part of the bus bar plate 11 (a diagram to be described later). 4) and a connection bus bar 31 for connecting adjacent unit cells 2 to each other.

  Further, the battery pack connection control body 1 is based on a voltage detection terminal 41 that detects the voltage of each unit cell 2, detection of the unit cell voltage, detection of an abnormality in the unit cell 2, and detection results by the voltage detection terminal 41. The control board 51 for performing voltage equalization control between cells based on a plurality of unit cells, and the board direct contact terminal 61 for directly connecting an electric wire from the outside of the control board 51 are provided.

  The bus bar plate 11 includes a case main body 12 that accommodates the connection bus bar 31 and the control board 51, and a hinge 13 that couples a part of the bus bar plate 11 to the bus bar plate 11 so that the bus bar plate 11 can be folded.

  The case body 12 is integrally provided between the two bus bar accommodating portions 14 for accommodating the connection bus bars 31, the substrate accommodating portion 15 for accommodating the control board 51, and the two bus bar accommodating portions 14, and is connected to the voltage detection terminal 41. And a voltage detection line deriving unit 16 for deriving the voltage detection electric wire 42 to the control board 51 side.

  The bus bar accommodating portion 14 is provided on the plurality of unit cells 2, and the substrate accommodating portion 15 is extended from the bus bar accommodating portion 14 via the hinge 13 along the overlapping direction A of the plurality of unit cells 2. Yes.

  Thus, the board | substrate accommodating part 15 is extended through the hinge 13 from the bus-bar accommodating part 14 along the stacking direction A of the several unit cell 2. As shown in FIG. For this reason, the board | substrate accommodating part 15 can be easily folded on the bus-bar accommodating part 14, and the enlargement of the connection control body 1 for assembled batteries can be prevented.

  The hinge 13 is provided between the bus bar accommodating portion 14 and the substrate accommodating portion 15, and accommodates the substrate accommodating portion 15 so that the bus bar accommodating portion 14 and the substrate accommodating portion 15 on the bus bar accommodating portion 14 can be folded. It is connected to the part 14.

  Thus, the bus bar plate 11 is formed by the bus bar housing part 14 and the hinge 13 that couples the board housing part 15 to the bus bar housing part 14 so that the board housing part 15 can be folded on the bus bar housing part 14. . For this reason, it is not necessary to secure a space for accommodating the control board 51 in the bus bar accommodating portion 14, and the layout of the connection bus bar 31 can be freely changed in the bus bar accommodating portion 14.

  In addition, since the layout of the connection bus bar 31 can be freely changed, it is not necessary to design a large area of the bus bar plate 11 in accordance with the layout change of the connection bus bar 31, so the connection control body 1 for the assembled battery is enlarged. Can be prevented.

  The voltage detection line deriving unit 16 is provided between the two bus bar housing units 14 together with the voltage detection terminal 41, and guides the voltage detection electric wire 42 drawn from the voltage detection terminal 41 to the control board 51 side.

  As described above, the case main body 12 is provided with the voltage detection line deriving portion 16 for deriving the voltage detection electric wire 42 drawn from the voltage detection terminal 41 to the control board 51 side between the two bus bar accommodating portions 14. For this reason, when the board | substrate accommodating part 15 is folded on the bus-bar accommodating part 14, it can prevent that the electric wire 42 for voltage detections pulls out from the voltage detection terminal 41. FIG.

  The insulating cover body 21 covers the bus bar accommodating portion 14 in a state where the connection bus bar 31 is accommodated in the bus bar accommodating portion 14 of the bus bar plate 11 and is disposed between the bus bar accommodating portion 14 and the substrate accommodating portion (described later). (See FIG. 4).

  As described above, the insulating cover body 21 covers the bus bar accommodating portion 14 of the bus bar plate 11 and is disposed between the bus bar accommodating portion 14 and the substrate accommodating portion 15. For this reason, it is not necessary to cover the board | substrate accommodating part 15 with the insulating cover body 21, and reduction of a manufacturing cost can be aimed at by reducing a number of parts.

  The connection bus bar 31 is accommodated in the bus bar accommodating portion 14. The connection bus bar 31 includes a bus bar body 32 formed in a substantially rectangular shape, and a plurality of connection holes 33 that connect the positive and negative electrodes of each unit cell 2 to connect adjacent unit cells 2 to each other. ing.

  The voltage detection terminal 41 is provided between the two bus bar accommodating portions 14 together with the voltage detection line deriving portion 16, and as shown in FIG. 3, a pressure contact terminal portion 43 to which the wire terminal of the voltage detection wire 42 is pressure-connected. have.

  The press contact terminal portion 43 is formed in a substantially U-shape and a pair of side walls 44 rising in the same direction from one end and the other end of the press contact terminal portion 43, and electrically connects the voltage detection wire 42 and the voltage detection terminal 41 to each other. It has a press contact blade 45 to be connected.

  As shown in FIG. 2, the control board 51 performs voltage equalization control between unit cells based on detection of unit cell 22 voltage, detection of abnormality of the unit cell 22, and each voltage detection result of the plurality of unit cells 2. A board body 52 to be performed, a ribbon electric wire 53 for connecting the control boards 51 to each other, and a PCB (Print Circuit Board) connector 54 to be connected to a mating connector (male connector).

  The board direct contact pressure contact terminal 61 is provided on the control board 51 and directly connects an electric wire from outside the control board to a circuit conductor formed on the control board 51. Thereby, since it is not necessary to provide a through-hole in the edge part of the control board 51, the board | substrate accommodating part 15 can be reduced in size.

  Next, with reference to FIG.4 and FIG.5, the case where the board | substrate accommodating part which comprises the connection control body 1 for assembled batteries which concerns on embodiment of this invention is folded over on a bus-bar accommodating part is demonstrated in detail.

  FIG. 4 is a perspective view showing a state in which the insulating cover body 21 constituting the battery pack connection control body according to the embodiment of the present invention is mounted. FIG. 5 is a perspective view showing a state in which the board housing portion constituting the battery pack connection control body according to the embodiment of the present invention is folded onto the bus bar housing portion 14, and FIG. 4 is a VI-VI view of FIG. 5. It is sectional drawing cut | disconnected along the line.

  First, as shown in FIG. 4, the bus bar plate 11 is placed on the plurality of unit cells 2, and the adjacent unit cells 2 are connected to each other by the connection bus bar 31 (see FIG. 2). The bus bar accommodating portion 14 is covered with an insulating cover body 21.

  Next, as shown in FIGS. 5 and 6, the insulating cover body 21 is connected to the bus bar housing portion 14 by folding the substrate housing portion 15 connected to the bus bar housing portion 14 via the hinge 13 on the bus bar housing portion 14. 14 and the substrate housing 15.

  Thereby, the connection control body 1 for the assembled battery connects the plurality of unit cells 2 in series, detects the voltage of each unit cell 2 by the voltage detection terminal 41 (see FIG. 3), and the voltage detection terminal 41 Based on the detected voltage detection result of each unit cell 2, voltage equalization control between the unit cells 2 is performed by the control board 51 (see FIGS. 1 and 2). The control board 51 also detects unit cell voltage and unit cell abnormality.

  Thus, since the insulating cover body 21 is disposed between the bus bar housing portion 14 and the substrate housing portion 15 by folding the substrate housing portion 15 on the bus bar housing portion 14, It is not necessary to cover the accommodating portion 15 with the insulating cover body 21. For this reason, the manufacturing cost can be reduced by reducing the number of parts.

  Moreover, as described above, the voltage detection wire 42 (see FIG. 1) drawn from the voltage detection terminal 41 (see FIG. 1 and FIG. 2) between the two bus bar accommodating portions 14 is connected to the case body 12 from the control board 51. A voltage detection line deriving unit 16 that leads to the side (see FIGS. 1 and 2) is provided.

  For this reason, as shown in FIG. 5 and FIG. 6, it is possible to prevent the voltage detection wire 42 from being pulled out from the voltage detection terminal 41 even when the substrate housing portion 15 is folded over the bus bar housing portion 14.

  Next, an assembled battery connection control body according to another embodiment of the present invention will be described in detail with reference to FIGS. FIGS. 7 to 14 are views showing an assembled battery connection control body according to another embodiment of the present invention.

  In addition, since the connection control body for assembled batteries which concerns on other embodiment has the structure substantially the same as the connection control body for assembled batteries which concerns on 1st Embodiment of this invention, description is abbreviate | omitted regarding the same structure. It shall be. Moreover, the same code | symbol is attached | subjected and demonstrated to the component similar to the connection control body for assembled batteries which concerns on 1st Embodiment.

  In addition, the assembled battery connection control body according to another embodiment outputs a desired voltage by connecting a plurality of unit cells 2 in the same manner as the assembled battery connection control body according to the first embodiment of the present invention. A plurality of unit cells 2 are connected to each other, and voltage equalization control between cells based on the plurality of unit cells is performed (see FIGS. 7 to 13 described later).

Second Embodiment
First, an assembled battery connection control body according to a second embodiment of the present invention will be described with reference to FIGS. Fig.7 (a) is a perspective view which shows the connection control body for assembled batteries and the 1st connection control body which concern on 2nd Embodiment of this invention. FIG.7 (b) is a perspective view which shows the state which folded the board | substrate accommodating part which comprises the connection control body for assembled batteries which concerns on 2nd Embodiment of this invention on the bus-bar accommodating part.

  FIG. 8 is a perspective view showing a state before the insulating cover constituting the battery pack connection control body according to the second embodiment of the present invention is mounted. Fig.9 (a) is a perspective view which shows the connection control body for assembled batteries and the 2nd connection control body which concern on 2nd Embodiment of this invention. FIG.9 (b) is a perspective view which shows the state which mounted | wore the insulation cover which comprises the connection control body for assembled batteries which concerns on 2nd Embodiment of this invention.

  Furthermore, Fig.10 (a) is a figure which shows the connection of the voltage detection terminal and control board which comprise the connection control body for assembled batteries which concerns on 2nd Embodiment of this invention. FIG.10 (b) is a perspective view which shows the state which mounted | wore the insulation cover which comprises the connection control body for assembled batteries in the connection state shown to Fig.10 (a).

  As shown in FIGS. 7 to 9, the connection control body 100 for a battery pack according to the second embodiment of the present invention is placed on one side 3a on the battery pack 3 in which twelve unit cells 2 are connected in series. The first connection control body 10a and the second connection control body 10b placed on the other side 3b are substantially configured.

  As shown in FIGS. 7 and 8, the first connection control body 10 a is adjacent to the bus bar plate 11 placed on the 12 unit cells 2, the insulating cover body 21 covering a part of the bus bar plate 11, and adjacent to the bus bar plate 11. And a connection bus bar 31 (see FIG. 8) for connecting the unit cells 2 to each other.

  The first connection control body 10a includes a voltage detection terminal 41 (see FIGS. 2 and 3) for detecting the voltage of each unit cell 2, detection of the unit cell voltage, detection of abnormality of the unit cell 2, and voltage detection. Based on the detection result of the terminal 41, a control board 51 that performs voltage equalization control between cells based on a plurality of unit cells, and a board direct contact terminal 61 that directly connects wires from outside the control board 51 (FIG. 1). And FIG. 4).

  An FFC (Flexible Flat Cable) 142 is connected to the voltage detection terminal 41 (see FIGS. 2 and 3), and the FFC 142 is connected to the control board 51 side by the voltage detection line deriving unit 16 as shown in FIG. The voltage detection terminal 41 and the control board 51 are connected to each other.

  As shown in FIGS. 9A and 9B, the second connection control body 10 b is provided with a bus bar plate 11 placed on the 12 unit cells 2 and an insulation covering a part of the bus bar plate 11. The cover body 21, connection bus bars 31 (see FIG. 8) for connecting the adjacent unit cells 2 to each other, and voltage detection terminals 41 (see FIGS. 2 and 3) for detecting the voltages of the unit cells 2 are omitted. It is configured.

  As shown in FIGS. 7 and 9, the assembled battery connection control body 100 configured as described above places the bus bar plate 11 of the first connection control body 10 a on the twelve unit cells 2 and connects them. The adjacent unit cells 2 are connected to each other by the bus bar 31 (see FIG. 8), and the bus bar accommodating portion 14 is covered with the insulating cover body 21 (see FIG. 7A).

  Next, the board accommodating portion 15 (see FIG. 7A) connected to the bus bar accommodating portion 14 of the first connection control body 10a via the hinge 13 (see FIG. 7B) is placed on the bus bar accommodating portion 14. The insulating cover body 21 is disposed between the bus bar housing portion 14 and the substrate housing portion 15 by folding (see FIG. 7B).

  Further, as shown in FIGS. 9A and 9B, the bus bar plate 11 of the second connection control body 10b is placed on the twelve unit cells 2, and the connection bus bar 31 (see FIG. 8) is used. Adjacent unit cells 2 are connected to each other, and the bus bar accommodating portion 14 is covered with an insulating cover body 21 (see FIG. 9B).

  Thereby, the connection control body 100 for assembled batteries connects the twelve unit cells 2 in series, detects the voltage of each unit cell 2 by the voltage detection terminal 41 (see FIG. 3), and detects the voltage of each unit cell 2 by the voltage detection terminal 41. Based on the detected voltage detection result of each unit cell 2, the control board 51 performs voltage equalization control between the unit cells 2. The control board 51 also detects unit cell voltage and unit cell abnormality.

  In the battery pack connection control body 100 described above, the voltage detection terminal 41 and the control board 51 have been described as being connected by the FFC 142, but as shown in FIGS. 10 (a) and 10 (b). In addition, the voltage detection wire 143 can be connected.

  As shown in FIGS. 10A and 10B, the voltage detection terminal 143 (see FIGS. 2 and 3) of the first connection control body 10a is press-connected to the wire terminal of the voltage detection wire 143. The voltage detection electric wire 143 is led out to the control board 51 side by the voltage detection line lead-out unit 16 to connect the voltage detection terminal 41 and the control board 51.

  Even when connected as described above, the battery pack connection control body 100 connects the twelve unit cells 2 in series and detects the voltage of each unit cell 2 by the voltage detection terminal 41 (see FIG. 3). Based on the voltage detection result of each unit cell 2 detected by the voltage detection terminal 41, the voltage equalization control between the unit cells 2 can be performed by the control board 51. The control board 51 can also detect a unit cell voltage and a unit cell abnormality.

<Third Embodiment>
Next, with reference to FIG.11 and FIG.12, the connection control body for assembled batteries which concerns on 3rd Embodiment of this invention is demonstrated. Fig.11 (a) is a perspective view which shows the connection control body for assembled batteries and the 1st connection control body which concern on 3rd Embodiment of this invention. FIG.11 (b) is a perspective view which shows the state which folded up the board | substrate accommodating part which comprises the connection control body for assembled batteries which concerns on 3rd Embodiment of this invention on a bus-bar accommodating part.

  Moreover, Fig.12 (a) is a figure which shows the connection of the voltage detection terminal and control board which comprise the connection control body for assembled batteries which concerns on 3rd Embodiment of this invention. FIG. 12B is a perspective view showing a state in which an insulating cover constituting the assembled battery connection control body is mounted in the connection state shown in FIG.

  As shown in FIG.11 and FIG.12, the connection control body 200 for assembled batteries which concerns on 3rd Embodiment of this invention is on the assembled battery 3 which connected 12 unit cells 2 in parallel 6 pieces of 12 unit cells 2 in parallel. The first connection control body 10a placed on the one side 3a and the second connection control body 10b placed on the other side 3b are substantially configured.

  As shown in FIGS. 11 (a) and 11 (b), the first connection control body 10a includes two bus bar plates 11 mounted on 12 unit cells 2 connected in series, two in parallel. The insulating cover body 21 covering a part of the bus bar plate 11 and the connection bus bar 31 (see FIG. 8) for connecting the adjacent unit cells 2 to each other are substantially constituted.

  The first connection control body 10a includes a voltage detection terminal 41 (see FIGS. 2 and 3) for detecting the voltage of each unit cell 2, detection of the unit cell voltage, detection of abnormality of the unit cell 2, and voltage detection. Based on the detection result of the terminal 41, a control board 51 that performs voltage equalization control between cells based on a plurality of unit cells, and a board direct contact terminal 61 that directly connects wires from outside the control board 51 (FIG. 1). And FIG. 4).

  An FFC (Flexible Flat Cable) 242 is connected to the voltage detection terminal 41 (see FIGS. 2 and 3), and the FFC 242 detects voltage as shown in FIGS. 11 (a) and 11 (b). It is led out to the control board 51 side by the line lead-out part 16 to connect the voltage detection terminal 41 and the control board 51.

  As shown in FIGS. 11 (a) and 11 (b), the second connection control body 10b includes two bus bar plates 11 placed on 12 unit cells 2 connected in series, two in parallel. The insulating cover body 21 covering a part of the bus bar plate 11, the connection bus bar 31 (see FIG. 8) for connecting the adjacent unit cells 2 to each other, and the voltage detection terminal 41 (each detecting the voltage of each unit cell 2) 2 and FIG. 3).

  As shown in FIGS. 11 (a) and 11 (b), the assembled battery connection control body 200 configured as described above includes two bus bar plates 11 of the first connection control body 10a in parallel in six. Are mounted on 12 unit cells 2 connected to each other, and adjacent unit cells 2 are connected to each other by a connection bus bar 31 (see FIG. 8), and the bus bar accommodating portion 14 is covered with an insulating cover body 21 (FIG. 11). (See (a)).

  Next, the board accommodating portion 15 (see FIG. 7A) connected to the bus bar accommodating portion 14 of the first connection control body 10a via the hinge 13 (see FIG. 11B) is placed on the bus bar accommodating portion 14. The insulating cover body 21 is disposed between the bus bar housing portion 14 and the substrate housing portion 15 by folding (see FIG. 7B).

  Further, as shown in FIGS. 9 (a) and 9 (b), two bus bar plates 11 of the second connection control body 10b are placed on twelve unit cells 2 in which six in parallel are connected in series. The adjacent unit cells 2 are connected to each other by the connection bus bar 31 (see FIG. 8), and the bus bar accommodating portion 14 is covered with the insulating cover body 21 (see FIG. 11B).

  Thereby, the connection control body 200 for the assembled battery connects 12 unit cells 2 connected in series, 2 in parallel, and the voltage of each unit cell 2 by the voltage detection terminal 41 (see FIG. 3). Based on each voltage detection result of each unit cell 2 detected and detected by the voltage detection terminal 41, the voltage equalization control between the unit cells 2 is performed by the control board 51. The control board 51 also detects unit cell voltage and unit cell abnormality.

  In the battery pack connection control body 200 described above, the voltage detection terminal 41 and the control board 51 have been described as being connected by the FFC 242, but as shown in FIGS. 12 (a) and 12 (b). In addition, the voltage detection electric wire 243 can be connected.

  As shown in FIGS. 12 (a) and 12 (b), a wire terminal of the voltage detection wire 243 is press-connected to the voltage detection terminal 41 (see FIGS. 2 and 3) of the first connection control body 10a. The voltage detection wire 243 is led out to the control board 51 side by the voltage detection line lead-out unit 16 to connect the voltage detection terminal 41 and the control board 51.

  Even when connected as described above, the connection control body for assembled battery 200 connects the 12 unit cells 2 connected in series, 2 in parallel, and each of the unit cells 2 by the voltage detection terminal 41 (see FIG. 3). The voltage of the unit cells 2 is detected, and the voltage equalization control between the unit cells 2 can be performed by the control board 51 based on the voltage detection result of each unit cell 2 detected by the voltage detection terminal 41. The control board 51 can also detect a unit cell voltage and a unit cell abnormality.

<Fourth embodiment>
Next, with reference to FIG.13 and FIG.14, the connection control body for assembled batteries which concerns on 4th Embodiment of this invention is demonstrated. FIG. 13A is a perspective view showing an assembled battery connection control body and a first connection control body according to the fourth embodiment of the present invention. FIG.13 (b) is a perspective view which shows the state which folded the board | substrate accommodating part which comprises the connection control body for assembled batteries which concerns on 4th Embodiment of this invention on the bus-bar accommodating part.

  Moreover, Fig.14 (a) is a figure which shows the connection of the voltage detection terminal and control board which comprise the connection control body for assembled batteries which concerns on 4th Embodiment of this invention. FIG. 14B is a perspective view showing a state in which an insulating cover constituting the battery pack connection control body is mounted in the connection state shown in FIG.

  As shown in FIGS. 13 and 14, the connection control body 300 for the assembled battery according to the fourth embodiment of the present invention is on the assembled battery 3 in which four 12 unit cells 2 are connected in series. The first connection control body 10a placed on the one side 3a and the second connection control body 10b placed on the other side 3b are substantially configured.

  As shown in FIGS. 13 (a) and 13 (b), the first connection control body 10a includes four bus bar plates 11 placed on twelve unit cells 2 connected in series with four in parallel. The insulating cover body 21 covering a part of the bus bar plate 11 and the connection bus bar 31 (see FIG. 8) for connecting the adjacent unit cells 2 to each other are substantially constituted.

  The first connection control body 10a includes a voltage detection terminal 41 (see FIGS. 2 and 3) for detecting the voltage of each unit cell 2, detection of the unit cell voltage, detection of abnormality of the unit cell 2, and voltage detection. Based on the detection result of the terminal 41, a control board 51 that performs voltage equalization control between cells based on a plurality of unit cells, and a board direct contact terminal 61 that directly connects wires from outside the control board 51 (FIG. 1). And FIG. 4).

  An FFC (Flexible Flat Cable) 342 is connected to the voltage detection terminal 41 (see FIGS. 2 and 3), and the FFC 342 detects the voltage as shown in FIGS. 13 (a) and 13 (b). It is led out to the control board 51 side by the line lead-out part 16 to connect the voltage detection terminal 41 and the control board 51.

  As shown in FIGS. 13 (a) and 13 (b), the second connection control body 10b includes four bus bar plates 11 mounted on twelve unit cells 2 connected in series, three in parallel. The insulating cover body 21 covering a part of the bus bar plate 11, the connection bus bar 31 (see FIG. 8) for connecting the adjacent unit cells 2 to each other, and the voltage detection terminal 41 (each detecting the voltage of each unit cell 2) 2 and FIG. 3).

  As shown in FIGS. 13 (a) and 13 (b), the assembled battery connection control body 300 configured as described above includes four bus bar plates 11 of the first connection control body 10a in parallel, three in series. Is mounted on 12 unit cells 2 connected to each other, and adjacent unit cells 2 are connected to each other by a connection bus bar 31 (see FIG. 8), and the bus bar accommodating portion 14 is covered with an insulating cover body 21 (FIG. 13). (See (a)).

  Next, the board accommodating portion 15 (see FIG. 13A) connected to the bus bar accommodating portion 14 of the first connection control body 10a via the hinge 13 (see FIG. 13B) is placed on the bus bar accommodating portion 14. By folding, the insulating cover body 21 is disposed between the bus bar housing portion 14 and the substrate housing portion 15 (see FIG. 13B).

  Further, as shown in FIGS. 13 (a) and 13 (b), four bus bar plates 11 of the second connection control body 10b are placed on twelve unit cells 2 connected in series, three in parallel. The adjacent unit cells 2 are connected to each other by the connection bus bar 31 (see FIG. 8), and the bus bar accommodating portion 14 is covered with the insulating cover body 21 (see FIG. 13B).

  As a result, the assembled battery connection control body 300 connects the four unit cells 2 connected in series in parallel, and the voltage of each unit cell 2 by the voltage detection terminal 41 (see FIG. 3). Based on each voltage detection result of each unit cell 2 detected and detected by the voltage detection terminal 41, the voltage equalization control between the unit cells 2 is performed by the control board 51. The control board 51 also detects unit cell voltage and unit cell abnormality.

  In the battery pack connection control body 300 described above, the voltage detection terminal 41 and the control board 51 have been described as being connected by the FFC 242, but as shown in FIGS. 14 (a) and 14 (b). Further, it can be connected by a voltage detection wire 343.

  As shown in FIGS. 14 (a) and 14 (b), the voltage detection terminal 343 (see FIGS. 2 and 3) of the first connection control body 10a is press-connected to the wire terminal of the voltage detection wire 343. This voltage detection wire 343 is led out to the control board 51 side by the voltage detection line lead-out section 16 to connect the voltage detection terminal 41 and the control board 51.

  Even in the case of connection as described above, the connection control body 300 for assembled battery connects the 12 unit cells 2 connected in series in 4 units in parallel and connected to each other by the voltage detection terminal 41 (see FIG. 3). The voltage of the unit cells 2 is detected, and the voltage equalization control between the unit cells 2 can be performed by the control board 51 based on the voltage detection result of each unit cell 2 detected by the voltage detection terminal 41. The control board 51 can also detect a unit cell voltage and a unit cell abnormality.

  In this manner, the battery pack connection control bodies 100, 200, and 300 according to other embodiments of the present invention can connect the unit cells 2 in series and in parallel depending on the connection state of the electrodes to the connection bus bar 31. .

  In addition, by connecting the voltage detection terminal 41 and the control board 51 with the FFCs 142, 242, 343, and 342, or with the voltage detection wires 143, 243, and 343, the battery pack connection control bodies 100, 200, 300 can detect the voltage of each unit cell 2 by the voltage detection terminal 41 (see FIG. 3).

  Thereby, the connection control body 100, 200, 300 for assembled batteries which concerns on other embodiment of this invention can obtain the effect similar to the connection control body 1 for assembled batteries which concerns on 1st Embodiment of this invention. it can.

  In this manner, the battery pack connection control bodies 1, 100, 200, and 300 according to the first to fourth embodiments of the present invention are a set that outputs a desired voltage by connecting a plurality of unit cells 2 in series. A battery pack connection controller 1, 100, 200, 300 for connecting a plurality of unit cells 2 in series and controlling an output voltage, which is mounted on the plurality of unit cells 2. A bus bar plate 11 composed of a case main body 12 having a bus bar accommodating portion 14 and a substrate accommodating portion 15, a connection bus bar 31 that is accommodated in the bus bar accommodating portion 14 and connects adjacent unit cells 2, and a substrate accommodating portion 15. A control board 51 that is accommodated and controls the output voltage based on the voltage detection results of the plurality of unit cells 2, and the base plate accommodating part 15 can be folded over the bus bar containing part 14 and the bus bar containing part 14. It is formed with an accommodating portion 15 and the hinge 13 connecting the bus bar housing 14.

  In addition, the assembled battery connection control body 1, 100, 200, 300 according to the embodiment of the present invention includes a voltage detection terminal 41 that detects the voltage of each unit cell 2, and the case body 12 accommodates two bus bars. A voltage detection line deriving unit 16 for deriving the voltage detection electric wire 42 drawn from the voltage detection terminal 41 together with the voltage detection terminal 41 to the control board 51 side is provided between the units 14.

  Further, in the battery pack connection control bodies 1, 100, 200, and 300 according to the embodiment of the present invention, the substrate housing portion 15 includes the hinge 13 from the bus bar housing portion 14 along the overlapping direction A of the plurality of unit cells 2. It is extended through.

  The battery pack connection control bodies 1, 100, 200, and 300 according to the embodiment of the present invention cover the bus bar housing portion 14 of the bus bar plate 11 and are disposed between the bus bar housing portion 14 and the substrate housing portion 15. The insulating cover body 21 is provided.

  And according to the connection control body 1,100,200,300 for assembled batteries which concerns on embodiment of this invention, the bus-bar plate 11 folds the board | substrate accommodating part 15 on the bus-bar accommodating part 14 and the bus-bar accommodating part 14 It is formed with the hinge 13 which connects the board | substrate accommodating part 15 to the bus-bar accommodating part 14 so that it is possible. For this reason, it is not necessary to secure a space for accommodating the control board 51 in the bus bar accommodating portion 14, and the layout of the connection bus bar 31 can be freely changed in the bus bar accommodating portion 14.

  In addition, since the layout of the connection bus bar 31 can be freely changed, it is not necessary to design a large area of the bus bar plate 11 in accordance with the layout change of the connection bus bar 31, and therefore, the battery pack connection control body 1, 100, An increase in size of 200 and 300 can be prevented.

  Therefore, it is possible to provide assembled battery connection control bodies 1, 100, 200, and 300 that can improve the degree of freedom of layout and can prevent an increase in size due to a layout change.

  Further, according to the assembled battery connection control body 1, 100, 200, 300 according to the embodiment of the present invention, the case main body 12 has a voltage detection terminal that is drawn from the voltage detection terminal 41 between the two bus bar housing portions 14. A voltage detection line deriving unit 16 for deriving the electric wire 42 toward the control board 51 is provided. For this reason, when the board | substrate accommodating part 15 is folded on the bus-bar accommodating part 14, it can prevent that the electric wire 42 for voltage detections pulls out from the voltage detection terminal 41. FIG.

  Furthermore, according to the assembled battery connection control body 1, 100, 200, 300 according to the embodiment of the present invention, the substrate housing portion 15 extends from the bus bar housing portion 14 to the hinge 13 along the overlapping direction of the plurality of unit cells 2. It is extended through. For this reason, the board | substrate accommodating part 15 can be easily folded on the bus-bar accommodating part 14, and the enlargement of the connection control body 1,100,200,300 for assembled batteries can be prevented.

  Further, according to the battery pack connection control body 1, 100, 200, 300 according to the embodiment of the present invention, the bus bar accommodating portion 14 of the bus bar plate 11 is covered, and between the bus bar accommodating portion 14 and the substrate accommodating portion 15. It has the insulating cover body 21 arrange | positioned. For this reason, it is not necessary to cover the board | substrate accommodating part 15 with the insulating cover body 21, and reduction of a manufacturing cost can be aimed at by reducing a number of parts.

  As mentioned above, although the connection control body for assembled batteries of this invention was demonstrated based on embodiment of illustration, this invention is not limited to this, The structure of each part is a thing of arbitrary structures which have the same function Can be replaced.

  For example, in the embodiment of the present invention, the case where the insulating cover body 21 covers only the bus bar housing portion 14 has been described, but the present invention is not limited to this. For example, both the bus bar accommodating portion 14 and the substrate accommodating portion 15 may be covered with the insulating cover body 21 so that the substrate accommodating portion 15 is folded on the bus bar accommodating portion 14.

  Moreover, in the said embodiment, although the board | substrate accommodating part 15 was provided along the stacking direction A of the unit cell 2, and it folded up to the case main body 12 side with the hinge 13, the width direction (with respect to the stacking direction A of the unit cell 2). The substrate housing portion may be provided along a direction orthogonal to the case body, and formed integrally with the case body 12 via a hinge, and may be folded to the case body 12 side.

  INDUSTRIAL APPLICABILITY The present invention is used in an assembled battery that outputs a desired voltage by connecting a plurality of unit cells in series, and is extremely useful when connecting the plurality of unit cells in series and controlling the output voltage.

DESCRIPTION OF SYMBOLS 1 Connection control body for assembled batteries 11 Bus bar plate 12 Case main body 13 Hinge 14 Bus bar accommodating part 15 Substrate accommodating part 16 Voltage detection line derivation part 21 Insulation cover 31 Connection bus bar 32 Bus bar main body 33 Connection hole 41 Voltage detection terminal 42 For voltage detection Wire 43 Pressure contact terminal portion 44 Side wall 45 Pressure contact blade 51 Control board 52 Board body 53 Ribbon wire 54 PCB connector 61 Direct contact pressure contact terminal 100 Assembly control connection unit for battery pack (second embodiment)
142 FFC (second embodiment)
143 Voltage detection wire (second embodiment)
200 Connection control body for battery pack (third embodiment)
242 FFC (third embodiment)
243 Voltage detection wire (third embodiment)
300 Connection control body for battery pack (fourth embodiment)
342 FFC (fourth embodiment)
343 Voltage detection wire (fourth embodiment)

Claims (4)

A plurality of unit cells are connected in series to output a desired voltage. The unit cells are connected in series, and unit cell voltage detection, unit cell abnormality detection, A battery pack connection controller that performs voltage equalization control between unit cells based on unit cells,
A bus bar plate comprising a case main body mounted on the plurality of unit cells and provided with a bus bar accommodating portion and a substrate accommodating portion;
A connecting bus bar that connects adjacent unit cells accommodated in the bus bar accommodating portion, and
A control substrate that is housed in the substrate housing portion, detects a unit cell voltage, detects an abnormality of the unit cell, and controls an output voltage based on each voltage detection result of the plurality of unit cells;
An assembled battery connection control body, comprising: the bus bar housing portion and a hinge for connecting the substrate housing portion to the bus bar housing portion so that the substrate housing portion can be folded over the bus bar housing portion. The battery pack connection controller according to claim 1,
It has a voltage detection terminal that detects the voltage of each unit cell,
The case body is provided with a voltage detection line lead-out portion for leading the voltage detection wire drawn from the voltage detection terminal together with the voltage detection terminal to the control board side between the two bus bar housing portions. A connection control body for an assembled battery. The connection control body for an assembled battery according to claim 1 or 2,
The assembled battery connection control body, wherein the substrate housing portion is extended from the bus bar housing portion via a hinge along the overlapping direction of the plurality of unit cells. It is a connection control body for assembled batteries as described in any one of Claims 1-3, Comprising:
An assembled battery connection control body comprising an insulating cover body that covers the bus bar housing portion of the bus bar plate and is disposed between the bus bar housing portion and the substrate housing portion.

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