KR102066914B1 - Battery Pack Comprising Pack Frame Having Holder for PCM - Google Patents

Abstract

The present invention provides two or more battery cells (battery cells) arranged in plane so that the electrode terminals facing each other; A pack frame including two or more battery cell accommodating parts surrounding the outer circumferential surface of the battery cell with the top and bottom surfaces of the planarly arranged plate-shaped battery cells open; A protection circuit module (PCM) electrically connected to the electrode terminals facing each other of the battery cells and controlling the operation of the battery pack; PCM mounting portion is formed in the region where the electrode terminals face each other in the pack frame while matching the flatness of the PCM; And a label surrounding the battery cells, the pack frame, and the PCM, wherein the PCM includes safety elements mounted on a printed circuit board (PCB) in which a circuit is printed on a board of an electrically insulating material. The structure of the PCM provides a battery pack, characterized in that one surface on which the safety elements protrude is mounted so as to face the inner surface of the PCM mounting portion.

Description

Battery pack containing pack frame with PCM mount {Battery Pack Comprising Pack Frame Having Holder for PCM}

The present invention relates to a battery pack including a pack frame having a PCM mounting portion.

Recently, the increase in the price of energy sources due to the depletion of fossil fuels, interest in environmental pollution is amplified, and the demand for environmentally friendly alternative energy sources has become an indispensable factor for future life. Accordingly, researches on various power production technologies such as nuclear power, solar energy, wind power, tidal power, etc. continue, and power storage devices for more efficient use of the generated energy are also drawing attention.

In particular, as technology development and demand for mobile devices increase, the demand for batteries as energy sources is rapidly increasing, and in recent years, the use of secondary batteries as power sources for electric vehicles (EVs) and hybrid electric vehicles (HEVs) has been realized. In addition, the field of use has also been extended to applications such as a power auxiliary power supply through gridization, and thus, many studies on batteries capable of meeting various needs have been conducted.

Representatively, there is a high demand for square and pouch type secondary batteries that can be applied to products such as mobile phones with a thin thickness in terms of shape of batteries, and high energy density, discharge voltage, and output stability in terms of materials. Demand for lithium secondary batteries such as lithium ion batteries and lithium ion polymer batteries is high.

Such a secondary battery may be used as a battery pack in a state in which a plurality of battery cells are mounted in a pack frame and connected in series or in parallel so as to exhibit desired capacity characteristics in the applied device.

1 is a schematic diagram schematically showing a structure in which a battery cell is mounted on a pack frame constituting a conventional battery pack.

Referring to FIG. 1, the battery pack 100 has a structure in which two battery cells 110 and 120 and one PCM 130 are mounted in one pack frame 140 and the pack frame 140. ) Has a structure surrounding the outer peripheries of the battery cells 110 and 120 and the PCM 130 as a whole.

Two battery cell mounting parts 141 and 142 are formed at both sides of the pack frame 140, and a PCM mounting part 143 is formed between the battery cell mounting parts 141 and 142.

The PCM 130 includes a safety element 131 on one surface thereof, and an external input / output terminal 132 connected by a wire protrudes outward from an outer periphery of the pack frame 140 and includes battery cells 110 and 120. The positive electrode terminals 111 and 121 and the negative electrode terminals 112 and 122 protrude from the outer periphery adjacent to the PCM 130 and are electrically connected to the PCM 130 by welding, respectively.

The battery pack having such a structure completes the battery pack in a structure in which a label is attached to an outer surface in a state where the battery cell and the PCM are mounted on the pack frame in order to minimize the increase in thickness.

In general, a PCM has a safety element protruding from one surface, and a welding portion of the PCM and the electrode terminals of the battery cells is formed on the same surface as above, and the PCM is coupled to the safety frame at the front side of the pack frame.

However, as mentioned above, in the case of the PCM mounting portion in which the PCM is located in the pack frame, the safety component protrudes from the PCM, and the portion in which the safety component is not located is indented. Since the flatness of the outer surface of the battery pack is uneven at the location, the label may be damaged or the adhesive strength may be reduced.

Therefore, there is a high need for a technology that can fundamentally solve these problems.

The present invention aims to solve the problems of the prior art as described above and the technical problems that have been requested from the past.

After extensive research and various experiments, the inventors of the present application form the PCM mounting portion formed on the pack frame in a structure for matching the flatness of the PCM, and one surface of the PCM mounting portion protrudes from the inner surface of the PCM mounting portion. When the battery pack is configured to face to face, it is confirmed that there is an effect that can solve the problem that the label is damaged by leveling the flatness of the outer surface of the battery pack, and came to complete the present invention.

The battery pack according to the present invention for achieving this object is two or more plate-shaped battery cells (battery cells) arranged in a plane so that the electrode terminals face each other;

A pack frame including two or more battery cell accommodating parts surrounding the outer circumferential surface of the battery cell with the top and bottom surfaces of the planarly arranged plate-shaped battery cells open;

A protection circuit module (PCM) electrically connected to the electrode terminals facing each other of the battery cells and controlling the operation of the battery pack;

PCM mounting portion is formed in the region where the electrode terminals face each other in the pack frame while matching the flatness of the PCM; And

A label surrounding the battery cells, the pack frame, and the PCM;

It contains,

The PCM has a structure in which safety devices are mounted on a printed circuit board (PCB) in which a circuit is printed on a board of an electrically insulating material.

The PCM has a structure in which one surface from which the safety elements protrude is mounted to face the inner surface of the PCM mounting portion.

That is, the battery pack according to the present invention has a structure in which the PCM mounting portion formed on the pack frame has a structure for matching the flatness of the PCM, and the one surface on which the safety elements of the PCM protrude is mounted so as to face the inner surface of the PCM mounting portion. By configuring the pack, the flatness of the outer surface of the battery pack is evenly provided, thereby providing an effect of solving the problem of damage to the label.

The plate-shaped battery cell may be, for example, a rectangular secondary battery or a pouch secondary battery.

The rectangular secondary battery may have a structure in which an electrode assembly is sealed in a rectangular metal case, and the pouch type secondary battery may specifically have a structure in which an electrode assembly is sealed in a laminate sheet including a resin layer and a metal layer.

In addition, in the battery pack according to the present invention, the plate-shaped battery cell may be a structure in which the two plate-shaped battery cells are arranged in a plane arranged so that the electrode terminals face each other, the thickness of the battery pack in the state that the battery cell is mounted on the pack frame In order to minimize the increase, the thickness of the pack frame may be the same structure as the thickness of the battery cell.

Meanwhile, in the present invention, the PCM mounting part includes a structure for matching the flatness of the PCM. In one specific example, the PCM mounting part has a size equal to or larger than that of the PCM outer circumferential surface, and has a partition structure protruding from the pack frame. It may be a structure including a PCM support.

In the structure, the PCM is mounted in a structure in which the outer peripheral surface of the PCM is supported by the PCM support, except for the protruding portion of the safety elements, when one surface on which the safety elements protrude is mounted to face the inner surface of the PCM mounting portion. In addition, since the other surface on which the safety device does not protrude from the PCM forms the outer surface of the battery pack, the flatness of the outer surface of the battery pack may be evenly formed.

In the above structure, the PCM support may have a structure in which the electrode terminal protruding grooves are formed so that the electrode terminals of the battery cell may protrude in the PCM direction.

In addition, the PCM support has a coupling step corresponding to the outer circumferential surface of the PCM is formed on the vertical cross-section, the PCM is configured in a structure that is mounted in a form that is seated on the coupling step can be performed to mount the PCM stably.

Since the structure is intended to minimize the increase in the thickness of the battery pack and to even the flatness of the outer surface of the battery pack, it is preferable that the protruding height of the PCM support corresponds to the thickness of the pack frame in the state where the PCM is mounted.

In another specific example, the PCM mounting portion may be a structure including one or more safety device supports protruding from the pack frame at a position corresponding to the position of the safety device mounted on the PCM.

Specifically, the safety device supporters protrude in a structure contacting the safety device mounted on the PCM, the PCM may be a structure in which the safety device is mounted on the pack frame in contact with the safety device supporters.

That is, in the above structure, the safety device supports are configured to have respective heights in contact with each other according to the projecting height of the safety device in contact with each other.

In addition, as mentioned above, this structure is intended to minimize the increase in the thickness of the battery pack, and to evenly flatten the outer surface of the battery pack, so that the height of the protruding height of the safety device supporters pack frame with the PCM mounted It is preferable that the height corresponding to the thickness is increased.

As described above, unlike the conventional battery pack structure, the PCM has a structure in which one surface from which safety elements protrude is mounted to face the inner surface of the PCM mounting portion, and in this structure, welding between the electrode terminal and the PCM is performed. It requires a structure to perform.

Specifically, the PCM mounting portion is formed with a PCM cover is formed on the opposite side of the surface on which the PCM is mounted, the PCM cover is composed of a structure in which a welding hole for electrical connection between the electrode terminal of the battery cell and the PCM is perforated Can be.

Therefore, the positive electrode terminal and the negative electrode terminal of the battery cell are protruded in the PCM direction, and positioned between the PCM and the PCM cover, the structure may be exposed to the outside through the welding holes drilled in the PCM cover.

Meanwhile, the PCM may be configured to include an external input / output terminal electrically connected to a protection circuit of the PCB. The external input / output terminal may be electrically connected to the PCM by a wire and protrude outward from the pack frame. It can be a structure.

At this time, the outer peripheral portion of the pack frame protruding the external input and output terminals may have a structure in which a U-shaped groove is formed.

Accordingly, the external input / output terminal may more easily protrude from the outer periphery of the pack frame in the process of mounting the PCM to the PCM mounting portion of the pack frame.

However, the structure of the external input / output terminal is not limited thereto, and the structure of the external input / output terminal is not particularly limited as long as the battery pack and the external device can be easily electrically connected.

For reference, the plate-shaped battery cell may be a lithium ion secondary battery, the lithium ion secondary battery is composed of a positive electrode, a negative electrode, a separator, and a lithium salt-containing non-aqueous electrolyte.

The positive electrode is prepared by, for example, applying a mixture of a positive electrode active material, a conductive material, and a binder onto a positive electrode current collector, followed by drying. If necessary, a filler may be further added to the mixture.

The positive electrode active material may be a layered compound such as lithium cobalt oxide (LiCoO ₂ ), lithium nickel oxide (LiNiO ₂ ), or a compound substituted with one or more transition metals; Lithium manganese oxides such as Li _{1 + x} Mn _2-x O ₄ (where x is 0 to 0.33), LiMnO ₃ , LiMn ₂ O ₃ , LiMnO _2, and the like; Lithium copper oxide (Li ₂ CuO ₂ ); Vanadium oxides such as LiV ₃ O ₈ , LiFe ₃ O ₄ , V ₂ O ₅ , Cu ₂ V ₂ O ₇ and the like; Ni-site type lithium nickel oxide represented by the formula LiNi _1-x M _x O ₂ , wherein M = Co, Mn, Al, Cu, Fe, Mg, B, or Ga, and x = 0.01 to 0.3; Formula LiMn _2-x M _x O ₂ (wherein M = Co, Ni, Fe, Cr, Zn or Ta and x = 0.01 to 0.1) or Li ₂ Mn ₃ MO ₈ (wherein M = Fe, Co, Lithium manganese composite oxide represented by Ni, Cu or Zn); LiMn ₂ O _{4 in} which a part of Li in the formula is substituted with alkaline earth metal ions; Disulfide compounds; Fe ₂ (MoO ₄ ) ₃ and the like, but are not limited to these.

The conductive material is typically added in an amount of 1 to 30 wt% based on the total weight of the mixture including the positive electrode active material. Such a conductive material is not particularly limited as long as it has conductivity without causing chemical change in the battery, and examples thereof include graphite such as natural graphite and artificial graphite; Carbon blacks such as carbon black, acetylene black, Ketjen black, channel black, furnace black, lamp black, and summer black; Conductive fibers such as carbon fibers and metal fibers; Metal powders such as carbon fluoride powder, aluminum powder and nickel powder; Conductive whiskeys such as zinc oxide and potassium titanate; Conductive metal oxides such as titanium oxide; Conductive materials such as polyphenylene derivatives and the like can be used.

The binder is a component that assists the bonding of the active material and the conductive material to the current collector, and is generally added in an amount of 1 to 30 wt% based on the total weight of the mixture including the positive electrode active material. Examples of such binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene , Polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene butylene rubber, fluorine rubber, various copolymers and the like.

The filler is optionally used as a component for inhibiting expansion of the positive electrode, and is not particularly limited as long as it is a fibrous material without causing chemical change in the battery. Examples of the filler include olefinic polymers such as polyethylene and polypropylene; Fibrous materials, such as glass fiber and carbon fiber, are used.

The negative electrode is manufactured by coating and drying a negative electrode active material on a negative electrode current collector, and optionally, the components as described above may optionally be further included.

As said negative electrode active material, For example, carbon, such as hardly graphitized carbon and graphite type carbon; Li _x Fe ₂ O ₃ (0 ≦ _x ≦ 1), Li _x WO ₂ (0 ≦ _x ≦ 1), Sn _x Me _1-x Me ' _y O _z (Me: Mn, Fe, Pb, Ge; Me' Metal complex oxides such as Al, B, P, Si, Group 1, Group 2, Group 3 elements of the periodic table, halogen, 0 <x ≦ 1; 1 ≦ y ≦ 3; 1 ≦ z ≦ 8); Lithium metal; Lithium alloys; Silicon-based alloys; Tin-based alloys; SnO, SnO ₂ , PbO, PbO ₂ , Pb ₂ O ₃ , Pb ₃ O ₄ , Sb ₂ O ₃ , Sb ₂ O ₄ , Sb ₂ O ₅ , GeO, GeO ₂ , Bi ₂ O ₃ , Bi ₂ O ₄ , and metal oxides such as Bi ₂ O ₅ ; Conductive polymers such as polyacetylene; Li-Co-Ni-based materials and the like can be used.

The separator is interposed between the anode and the cathode, and an insulating thin film having high ion permeability and mechanical strength is used. The pore diameter of the separator is generally from 0.01 to 10 ㎛ ㎛, thickness is generally 5 ~ 300 ㎛. As such a separator, for example, olefin polymers such as chemical resistance and hydrophobic polypropylene; Sheets or non-woven fabrics made of glass fibers or polyethylene are used. When a solid electrolyte such as a polymer is used as the electrolyte, the solid electrolyte may also serve as a separator.

The lithium salt-containing non-aqueous electrolyte solution consists of a polar organic electrolyte solution and a lithium salt. As the electrolyte, a non-aqueous liquid electrolyte, an organic solid electrolyte, an inorganic solid electrolyte, and the like are used.

As said non-aqueous liquid electrolyte solution, N-methyl- 2-pyrrolidinone, a propylene carbonate, ethylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, gamma, for example Butyl lactone, 1,2-dimethoxy ethane, tetrahydroxy franc, 2-methyl tetrahydrofuran, dimethylsulfoxide, 1,3-dioxorone, formamide, dimethylformamide, dioxorone , Acetonitrile, nitromethane, methyl formate, methyl acetate, phosphate triester, trimethoxy methane, dioxorone derivatives, sulfolane, methyl sulfolane, 1,3-dimethyl-2-imidazolidinone, propylene carbo Aprotic organic solvents such as nate derivatives, tetrahydrofuran derivatives, ethers, methyl pyroionate and ethyl propionate can be used.

Examples of the organic solid electrolyte include polyethylene derivatives, polyethylene oxide derivatives, polypropylene oxide derivatives, phosphate ester polymers, polyedgetion lysine, polyester sulfides, polyvinyl alcohols, polyvinylidene fluorides, Polymers containing ionic dissociating groups and the like can be used.

Examples of the inorganic solid electrolyte include Li ₃ N, LiI, Li ₅ NI ₂ , Li ₃ N-LiI-LiOH, LiSiO ₄ , LiSiO ₄ -LiI-LiOH, Li ₂ SiS ₃ , Li ₄ SiO ₄ , Nitrides, halides, sulfates and the like of Li, such as Li ₄ SiO ₄ -LiI-LiOH, Li ₃ PO ₄ -Li ₂ S-SiS ₂ , and the like, may be used.

The lithium salt is a good material to be dissolved in the non-aqueous electrolyte, for example, LiCl, LiBr, LiI, LiClO ₄ , LiBF ₄ , LiB ₁₀ Cl ₁₀ , LiPF ₆ , LiCF ₃ SO ₃ , LiCF ₃ CO ₂ , LiAsF _{6, LiSbF 6, LiAlCl 4,} CH 3 SO 3 Li, CF 3 SO 3 Li, (CF 3 SO 2) 2 NLi, chloroborane lithium, lower aliphatic carboxylic acid lithium, lithium tetraphenyl borate and imide have.

In addition, for the purpose of improving charge / discharge characteristics, flame retardancy, etc., the non-aqueous electrolyte solution includes, for example, pyridine, triethyl phosphite, triethanolamine, cyclic ether, ethylene diamine, n-glyme, hexaphosphate triamide, and the like. Nitrobenzene derivatives, sulfur, quinone imine dyes, N-substituted oxazolidinones, N, N-substituted imidazolidines, ethylene glycol dialkyl ethers, ammonium salts, pyrroles, 2-methoxy ethanol, aluminum trichloride, etc. It may be. In some cases, in order to impart nonflammability, a halogen-containing solvent such as carbon tetrachloride and ethylene trifluoride may be further included, or carbon dioxide gas may be further included to improve high temperature storage characteristics.

The present invention can also provide a device including the battery pack as a power source, the device is a mobile phone, tablet computer, notebook computer, power tools, wearable electronics, electric vehicle, hybrid electric vehicle, plug-in hybrid It may be any one selected from the group consisting of an electric vehicle, and a power storage device.

Since the structure of these devices and their fabrication methods are known in the art, detailed description thereof is omitted herein.

As described above, the battery pack according to the present invention is formed in a structure for matching the flatness of the PCM mounting portion formed on the pack frame, the mounting surface so that the one side protruding the safety elements of the PCM facing the inner surface of the PCM mounting portion By constructing the battery pack in the structure, there is an effect that can solve the problem that the label is damaged by evenly flattening the outer surface of the battery pack.

1 is a schematic diagram schematically showing a structure in which a battery cell is mounted on a pack frame constituting a conventional battery pack;
2 is a schematic view showing a top structure of a battery pack according to an embodiment of the present invention;
3 is a schematic diagram schematically showing a bottom structure of a battery pack according to an embodiment of the present invention;
4 is a vertical sectional view along AA ′ in the PCM mounting structure of FIG. 2;
5 is a vertical sectional view taken along line BB ′ in the PCM mounting structure of FIG. 2;
6 is a vertical cross-sectional view of a portion corresponding to A-A 'in the PCM mounting structure according to another embodiment of the present invention;
7 is a vertical cross-sectional view of a portion corresponding to B-B 'in the PCM mounting structure according to another embodiment of the present invention.

Hereinafter, although described with reference to the drawings according to an embodiment of the present invention, this is for easier understanding of the present invention, the scope of the present invention is not limited thereto.

2 and 3 are schematic diagrams schematically showing the top and bottom structure of the battery pack according to an embodiment of the present invention, respectively.

Referring to these drawings, the battery pack 200 according to the present invention includes two planar battery cells 210 and 220 arranged in a plane such that electrode terminals face each other, and the planar battery cells 210 and 220 arranged in a plane. Of the pack frame 240 and the battery cells 210 and 220 including the battery cell accommodating parts 241 and 242 surrounding the outer circumferential surfaces of the battery cells 210 and 220 with the upper and lower surfaces thereof open. It is configured to include one PCM 230 that is electrically connected to the facing electrode terminals and controls the operation of the battery pack.

Four fixing parts 246a, 246b, 246c, and 246d are formed at the outer circumference of the pack frame 240 to fix the battery pack 200 to the external device, and the battery cells 210 and 220 are formed. The silver is mounted on the battery cell accommodating parts 241 and 242 formed on both sides of the pack frame 240, and the PCM 230 is mounted to the PCM mounting part 243 formed between the battery cell accommodating parts 241 and 242. have.

At this time, the PCM 230 is mounted so that one surface on which the safety elements (see FIG. 4 below) protrudes to face the inner surface of the PCM mounting unit 243, and the other surface of the PCM 230 having a relatively high flatness is the battery pack 200. It consists of a structure that forms the outer surface of).

The PCM 230 protrudes outward through a U-shaped groove in which an external input / output terminal 231 connected by a wire 232 is formed at a corresponding outer peripheral portion of the frame member 240.

The upper surface of the PCM mounting portion 243 has an open structure, and a PCM cover 244 is formed on the lower surface thereof, and the PCM cover 244 has the electrode terminals of the battery cells 210 and 220 and the PCM. Four welding holes 245a, 245b, 245c, and 245d are drilled to expose the connection portion 230.

FIG. 4 is a vertical cross-sectional view taken along line AA ′ in the PCM mounting portion structure of FIG. 2, and FIG. 5 is a vertical cross-sectional view taken along line B-B 'in the PCM mounting portion structure of FIG. 2. have.

Referring to these drawings, the PCM mounting portion 243 includes a PCM support 250 having a partition structure protruding from the pack frame 240 in the same size as the outer surface of the PCM 230.

The PCM support 250 includes grooves 251 for protruding the electrode terminals such that the positive electrode terminals 221 and 222 and the negative electrode terminals 211 and 212 of the battery cells 210 and 220 may protrude in the direction of the PCM 230. , 252 is formed, and the PCM 230 is mounted such that one surface on which the safety elements 231 and 232 protrude from the inner surface of the PCM mounting portion 243.

The PCM support 250 has coupling steps 261 and 262 corresponding to the outer circumferential surface of the PCM 230 based on the vertical cross-sectional view of B-B ', and the PCM 230 is coupled steps 251. 252 is mounted in a form seated on.

At this time, the protruding height of the PCM support 250 is formed to a height corresponding to the thickness of the pack frame 240 in the state where the PCM 230 is mounted, the battery in the state where the PCM 230 is mounted to the PCM mounting portion 243 Since the structure of the pack 200 does not change in thickness, and the PCM 230 is seated on the coupling steps 261 and 262 in the structure, the pack frame 240 including the protruding height of the PCM support 250. ) Is configured to be equal to the height of the battery cells 210 and 220.

FIG. 6 is a vertical cross-sectional view corresponding to A-A 'in the PCM mounting unit structure according to another embodiment of the present invention, and FIG. 7 illustrates a B in the PCM mounting unit structure according to another embodiment of the present invention. A vertical cross sectional view corresponding to -B 'is schematically illustrated.

In the case of the battery pack illustrated in FIGS. 6 and 7, except that the structure of the PCM mounting unit is different, the battery pack corresponds to the same structure as the battery pack of FIGS. 2 and 3, and thus, a detailed description of the battery pack structure will be omitted.

Meanwhile, referring to these drawings, the PCM mounting portion 343 is provided with two safety protrusions protruding from the pack frame 340 at positions corresponding to the positions of the safety elements 231 and 232 mounted on the PCM 330. Device supports 361 and 362 are included.

The safety device supports 361 and 362 protrude in contact with the safety devices 231 and 232 mounted on the PCM 330, and the PCM 330 is secured by the safety devices 231 and 232. It is mounted to the pack frame 340 in contact with the element supports 361 and 362.

In this case, the protruding heights of the safety device supports 361 and 362 are formed at a height corresponding to the thickness of the pack frame 340 in the state where the PCM 330 is mounted, such that the PCM 330 is formed of the safety device supports 361. 362 has a structure in which the thickness of the battery pack 300 does not change, and in this structure, the height of the pack frame 340 including the safety device supports 361 and 362 and the PCM 330 is a battery. It is configured to be equal to the height of the cells (310, 320).

Those skilled in the art to which the present invention pertains will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

Claims (18)

Two or more battery cells (battery cells) arranged in plane so that the electrode terminals face each other;
A pack frame including two or more battery cell accommodating parts surrounding the outer circumferential surface of the battery cell with the top and bottom surfaces of the planarly arranged plate-shaped battery cells open;
A protection circuit module (PCM) electrically connected to the electrode terminals facing each other of the battery cells and controlling the operation of the battery pack;
A PCM mounting part formed at a portion where the electrode terminals face each other in the pack frame while matching the flatness of the PCM; And
A label surrounding the battery cells, the pack frame, and the PCM;
It contains,
The PCM has a structure in which safety devices are mounted on a printed circuit board (PCB) in which a circuit is printed on a board of an electrically insulating material.
The PCM is mounted such that one surface on which the safety devices protrude is facing the inner surface of the PCM mounting portion.
The PCM mounting portion 243,
Safety device supports 361 and 362 protruding from the pack frame 240 at positions corresponding to the positions of the safety devices 231 and 232 mounted on the PCM to support the safety devices when the PCM is mounted; And
A PCM support 250 protruding from the pack frame 240 to support a printed circuit board (PCB) constituting the PCM;
It is configured to include,
The safety device support (361, 362) is
The PCM is projected to contact the safety elements 231 and 232 mounted on the PCM, and the PCM is in contact with the pack frame 240 while the safety elements 231 and 232 of the PCM are in contact with the safety element supports 361 and 362. Fitted,
In the PCM support 250,
The battery pack, characterized in that the coupling step (261, 262) corresponding to the outer peripheral surface of the PCM is formed on the vertical cross-section, the PCM is mounted on the PCM support (250) in a form that is seated on the coupling step.
The battery pack according to claim 1, wherein the plate-shaped battery cell is a rectangular secondary battery or a pouch secondary battery. The battery pack according to claim 2, wherein the pouch type secondary battery has a structure in which an electrode assembly is sealed in a laminate sheet including a resin layer and a metal layer. The battery pack according to claim 1, wherein two plate-shaped battery cells are arranged in a plane such that electrode terminals face each other. The battery pack as claimed in claim 1, wherein the thickness of the pack frame is the same as the thickness of the battery cell. delete The battery pack as claimed in claim 1, wherein the PCM support is provided with a groove for protruding the electrode terminals so that the electrode terminals of the battery cell may protrude in the PCM direction.
delete The battery pack according to claim 1, wherein the protruding height of the PCM support is a height corresponding to the thickness of the pack frame in a state where the PCM support is mounted.
delete delete The battery pack according to claim 1, wherein the protruding height of the safety device supports is a height corresponding to the thickness of the pack frame in a state where the PCM is mounted. According to claim 1, wherein the PCM mounting portion is a PCM cover is formed on the opposite surface on which the PCM is mounted, the PCM cover is a hole for welding for electrical connection between the electrode terminal of the battery cell and the PCM A battery pack, characterized in that. The battery pack as claimed in claim 1, wherein the PCM includes an external input / output terminal electrically connected to a protection circuit of the PCB. 15. The battery pack according to claim 14, wherein the external input / output terminals are electrically connected to the PCM by wires, and protrude outward from the pack frame. The battery pack according to claim 15, wherein a U-shaped groove is formed in an outer peripheral portion of the pack frame from which the external input / output terminals protrude. A device comprising the battery pack according to claim 1 as a power source. 18. The device of claim 17, wherein the device is any one selected from the group consisting of mobile phones, tablet computers, notebook computers, power tools, wearable electronics, electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles, and power storage devices. Device characterized in that.

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