CN218548687U - Charger and charging system - Google Patents

Abstract

The utility model discloses a charger and a charging system. The charger comprises: a charger shell in which a first circuit board is installed, and a first charging interface and a first power supply are arranged on the charger shell. terminal, the first charging interface and the first power supply terminal are respectively electrically connected to the first circuit board; wherein, the first circuit board is integrated with an AC-DC module, a control and protocol module, and a DC-DC module. A DC module, the AC-DC module is electrically connected to the DC-DC module, the DC-DC module is electrically connected to the first charging interface, and the control and protocol modules are respectively connected to the DC-DC The module is electrically connected to the first charging interface, and the first charging interface is a Type-C interface. The utility model can charge the battery pack by connecting two chargers, and can realize that one charger can charge multiple battery packs at the same time, or use one charger to charge the same battery pack, so as to improve the charging efficiency.

Description

A kind of charger and charging system

technical field

The utility model relates to the technical field of battery charging, in particular to a charger and a charging system.

Background technique

In recent years, with the development of battery material technology, the application range of battery components has been greatly improved. At present, electric tools on the market have been widely used. However, the current battery pack can only supply power to electrical devices with the same voltage, and the output is relatively single, which has relatively large limitations. Other consumer electronic products cannot use this power supply for power supply. However, the existing chargers usually can only charge a single battery pack, and cannot charge multiple battery packs at the same time, so that it takes a long time for the user to charge the battery packs one by one after each power tool is used up. Moreover, the existing charger charges the battery pack through a single interface, and the charging process is slow and takes a long time.

In view of this, it is indeed necessary to improve the existing battery pack and charger to solve the above problems.

Utility model content

In order to solve the above technical problems, the utility model proposes a charger and a charging system to improve that the battery pack can only supply power to electrical devices of the same voltage, the output is relatively single, and the limitations are relatively large. Other consumer electronic products cannot use this power supply. Power supply and existing chargers can usually only charge a single battery pack, but cannot charge multiple battery packs at the same time, and the charging process of the battery packs takes a long time.

The utility model proposes a charger, comprising: a charger housing, in which a first circuit board is installed, a first charging interface and a first power supply terminal are installed on the first circuit board, and the first charging interface and the first power supply terminal are respectively electrically connected to the first circuit board, and are located on opposite sides of the charger housing;

Wherein, the first circuit board is integrated with an AC-DC module, a control and protocol module, and a DC-DC module, the AC-DC module is connected to the DC-DC module, and the DC-DC module is connected to the The first charging interface is connected, the control and protocol modules are respectively connected to the DC-DC module and the first charging interface, and the first charging interface is a Type-C interface.

In one embodiment of the present utility model, the first charging interface includes a plurality of Type-C interfaces, and each Type-C interface is connected with a DC-DC module, and the control and protocol modules are respectively connected with Each of the DC-DC modules is connected to each of the Type-C interfaces.

The utility model also proposes a charging system, including:

A battery pack, the battery pack includes a battery pack housing, in which a battery cell assembly and a second circuit board are arranged, and the second circuit board is electrically connected to the battery pack;

A plurality of second charging interfaces, assembled on the second circuit board, electrically connected to the second circuit board, and located on the side of the battery pack;

A charger housing, in which a first circuit board is installed, a first charging interface and a first power supply terminal are installed on the first circuit board, and the first charging interface and the first power supply terminal are respectively connected to the The first circuit board is electrically connected and located on opposite sides of the charger housing;

Wherein, the first circuit board is integrated with an AC-DC module, a control and protocol module, and a DC-DC module, the AC-DC module is connected to the DC-DC module, and the DC-DC module is connected to the The first charging interface is connected, and the control and protocol modules are respectively connected to the DC-DC module and the first charging interface;

The first charging interface and the second charging interface are set as Type-C interfaces.

In one embodiment of the present invention, the cell assembly includes a plurality of cells, the plurality of cells are installed in a cell bracket, the cell bracket is located in the battery pack housing, and the The cells are connected by electrode sheets.

In one embodiment of the present utility model, the second charging interface includes at least a first Type-C interface and a second Type-C interface, and the first Type-C interface and the second Type-C interface are respectively Assembled on the circuit board and electrically connected with the circuit board.

In one embodiment of the present invention, an insertion portion is provided on the top of the battery pack housing, and slide rails are provided on both sides of the insertion portion.

In one embodiment of the present invention, terminal interfaces are installed on the top of the battery pack housing, the terminal interfaces are located between the slide rails, and the terminal interfaces are electrically connected to the circuit board.

In an embodiment of the present invention, the first Type-C interface and the second Type-C interface are located on two sides or the same side of the socket part.

In an embodiment of the present utility model, the first Type-C interface and the second Type-C interface are located on the top surface of the socket.

In an embodiment of the present invention, the first Type-C interface and the second Type-C interface are located on the same side or both sides of the battery pack casing.

In an embodiment of the present invention, when the first charging interface includes a Type-C interface, the battery pack is respectively connected to the first charging interfaces on the two chargers through a plurality of second charging interfaces.

In one embodiment of the present invention, when the first charging interface includes two Type-C interfaces, the battery pack is respectively connected to the two first charging interfaces of the same charger through a plurality of second charging interfaces , or charge different battery packs through different first charging interfaces on the charger.

The utility model proposes a charging system. By setting at least two Type-C interfaces on the battery pack, the battery pack can provide power for other consumer electronic products, and the battery pack can also be powered by connecting two chargers. Charging to improve charging efficiency, and by setting two Type-C interfaces on the charger to realize that one charger can charge multiple battery packs at the same time, or use one charger to charge the same above-mentioned battery pack, To improve charging efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic structural diagram of a charging system proposed by the present invention.

FIG. 2 is a schematic structural diagram of a battery pack in a charging system proposed by the present invention.

FIG. 3 is a schematic structural view of the upper case of the battery pack proposed by the present invention.

FIG. 4 is a schematic top view of the upper case of the battery pack proposed by the present invention.

Fig. 5 is a schematic diagram of the assembly of the limiting member and the installation slot cover in the battery pack proposed by the utility model.

FIG. 6 is a schematic structural view of the position-limiting part of the battery pack proposed by the present invention.

FIG. 7 is a schematic bottom view of the limiting member of the battery pack proposed by the present invention.

FIG. 8 is a schematic structural view of the lower casing of the battery pack proposed by the present invention.

FIG. 9 is a structural schematic diagram of the circuit board and the Type-C interface of the battery pack proposed by the present invention.

FIG. 10 is a schematic structural view of the cell support of the battery pack proposed by the present invention.

FIG. 11 is a schematic diagram of the position of the charging interface proposed by the present invention on both sides of the battery pack shell.

FIG. 12 is a schematic diagram of the position of the charging interface proposed by the present invention on the same side of the battery pack shell.

Fig. 13 is a schematic diagram of the position of the charging interface proposed by the present invention on both sides of the socket.

Fig. 14 is a schematic diagram of the position of the same side of the plug-in part of the charging interface proposed by the present invention.

Fig. 15 is a schematic diagram of the position of the charging interface proposed by the present invention at the terminal interface.

Fig. 16 is a schematic diagram of the position of the charging interface proposed by the present invention on the top of the battery pack.

Fig. 17 is a schematic diagram of another position where the charging interface proposed by the present invention is located on the top of the battery pack.

FIG. 18 is another structural schematic diagram of a charging system proposed by the present invention.

FIG. 19 is a schematic diagram of a circuit structure of a charger proposed by the present invention.

Fig. 20 is a structural block diagram of the battery pack disclosed in the embodiment of the present invention.

Fig. 21 shows another structural block diagram of the battery pack disclosed in the embodiment of the present invention.

Fig. 22 is a structural block diagram of the charging control system disclosed in the embodiment of the present invention.

Fig. 23 is another structural block diagram of the charging control system disclosed in the embodiment of the present invention.

Fig. 24 is another structural block diagram of the charging control system disclosed in the embodiment of the present invention.

FIG. 25 is a schematic diagram of the workflow of the charging control method disclosed in the embodiment of the present invention.

Fig. 26 is a schematic diagram of the workflow of the type of detection equipment disclosed in the embodiment of the present invention.

Fig. 27 is a schematic diagram of the charging process disclosed in the embodiment of the present invention.

Fig. 28 is a block diagram of a charging system disclosed in the embodiment of the present invention.

Detailed ways

The implementation of the present utility model is described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation modes, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model.

It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic concept of the utility model, and only the components related to the utility model are shown in the diagrams rather than the number of components, Shape and size drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the component layout type may also be more complicated.

In order to solve the problem that the battery pack can only supply power to electrical devices of the same voltage, the output is relatively single, and the limitations are relatively large. Other consumer electronic products cannot use this power supply for power supply, and the existing chargers usually can only charge a single battery pack. To charge multiple battery packs at the same time, and the battery pack charging process takes a long time, the utility model proposes a charging system, as shown in Figures 1 to 11, including a battery pack 100 and a charger, the battery pack 100 is connected to the charger through a charging cable 1001.

As shown in FIGS. 1 to 10 , in this embodiment, the battery pack 100 includes a battery pack case 10 , a second circuit board 13 , a cell support 14 , a cell assembly 120 and a second charging interface. The battery cell assembly 120 includes a plurality of battery cells, and a plurality of the battery cells are installed in the battery cell support 14, and the battery cell support 14 is located in the battery pack housing 10, and the battery cells pass through The electrode sheet 141 is connected, and the second circuit board 13 is electrically connected with the electric core through the electrode sheet 141, and the second circuit board 13 is located above the electric core support 14, and the second The charging interface is electrically connected to the circuit board 13. In this embodiment, the second charging interface includes at least a first Type-C interface 122a and a second Type-C interface 122b, and the first Type-C interface 122b One end of the interface 122a and the second Type-C interface 122b is installed on the second circuit board 13, and the other end is located in the through hole 1001 on the battery pack casing 10, and in this embodiment, the The second circuit board 13 , the cell support 14 and the cell assembly 120 are all located in the battery pack casing 10 .

As shown in FIGS. 2 to 4 , in this embodiment, an insertion portion 1101 is provided on the top surface of the battery pack case 10 , and slide rails 1102 are provided on both sides of the insertion portion 1101 . The slide rail 1102 is used to connect with the tool. Specifically, as shown in FIG. 3 , the battery pack casing 10 includes an upper casing 11 and a lower casing 12, the upper casing 11 is fixedly connected to the lower casing 12, and the cell assembly 120 and the circuit board 13 is accommodated in the accommodation space formed by the assembly of the upper casing 11 and the lower casing 12, and the top surface of the upper casing 11 is provided with a plug-in part 1101, and the two sides of the plug-in part 1101 are provided with slide rails 1102, and the terminal interface 131 is arranged at one end of the insertion part 1101, and is located between the slide rails 1102 on both sides of the insertion part 1101, when the external electric tool passes through the slide rail 1101 and When the battery pack 100 is connected, the second power supply terminal 132 is electrically connected to the external electric tool.

As shown in FIGS. 2 to 4 , the upper casing 11 of the battery pack case 10 is provided with a limiting member installation groove 112, and a limiting member 111 is installed in the limiting member installation groove 112, and passes through the installation groove cover. 1121 for sealing, and the limiting member 111 is used to allow the battery pack 100 to be easily disengaged when the battery pack 100 is plugged in. In this embodiment, the insertion part 1101 is located on the upper casing 11, and a terminal interface 131 is installed on the top of the battery pack casing 10, and the terminal interface 131 is located at one end of the insertion part 1101, And it is located between the sliding rails 1102 on both sides of the insertion part 1101 .

As shown in Fig. 5 to Fig. 9, in this embodiment, the second power supply terminal 132 is also integrated on the second circuit board 13, and the second power supply terminal 132 is also connected to the second power supply terminal 132 through the second circuit board 13. The battery cell assembly 120 is electrically connected, and one end of the plug-in portion 1101 on the top surface of the battery pack case 10 is provided with a terminal interface 131, and the second power supply terminal 132 is arranged in the terminal interface 131. The design of the second power supply terminal 132 and the terminal interface 131 enables the battery pack 100 of the present invention to be plugged into an electric tool, thereby supplying power to the electric tool. Specifically, when the tool is assembled with the battery pack 100 through the slide rail 1102 , the terminal interface 131 is connected to the tool to provide power for the tool. In addition, in this embodiment, a limiting member 111 is installed on the upper housing 11, and the limiting member 111 is installed on the side of the upper housing 11 away from the terminal interface 131 for When the battery pack 10 is connected with the tool, it plays a locking role to prevent the battery pack 100 from falling off from the tool.

As shown in FIGS. 5 to 7 , specifically, the limiting member 111 includes a limiting pressing portion 1111 and a limiting post 1112 , and the limiting pressing portion 1111 is used for the operator to operate to release the gap between the battery pack 100 and the electric tool. The lock; the limit column 1112 is used to realize the fixed connection between the limit piece 111 and the external tool. In addition, in this embodiment, a spring installation column 1113 and a guide sleeve 1114 are provided on both ends of the bottom of the limiting member 111, a limiting spring is installed on the spring installing column 1113, and the bottom end of the limiting spring Abutting against the limiter installation groove 112 of the upper housing 11 for resetting the limiter 111, the guide sleeve 1114 is sleeved on the guide column 1116 on the limiter installation groove 112, It plays a guiding role in the process of pressing down and rising of the limiting member 11 .

As shown in FIG. 8 , in this embodiment, the battery pack housing 10 is provided with an insertion port 113 , and the battery pack 100 also includes a Type-C interface of 113, the Type-C interface is electrically connected with the circuit board 13, so as to realize the electrical connection between the battery core and the Type-C interface, so as to facilitate the use of the Type-C interface to realize the battery core Power output/input for component 120.

As shown in Figures 1 to 11, in this embodiment, the first Type-C interface 122a and the second Type-C interface 122b are located on the same side or both sides of the battery pack casing 10, when When the first Type-C interface 122a and the second Type-C interface 122b are located on both sides of the battery pack housing 10, they are preferably arranged symmetrically or asymmetrically, and preferably The Type-C interface is set approximately flush with the circuit board in the height direction, and the distance L1 between the two Type-C interfaces is in the range of 0-140mm. In this embodiment, preferably, the first Type-C interface 122a and the second Type-C interface 122b are approximately flush with the second circuit board 13 in the height direction, when the battery pack is used on the tool , 2 Type-C interfaces can also discharge peripherals at the same time, or supply power to peripherals separately through 2 Type-C interfaces. As shown in FIG. 12 , when located on the same side of the battery pack casing, the distance L2 between the two Type-C interfaces ranges from 0 to 160 mm.

As shown in Figure 13 and Figure 14, in addition, in some embodiments, the first Type-C interface 122a and the second Type-C interface 122b are located on both sides or on the same side of the socket part 1101, Specifically, the first Type-C interface 122a and the second Type-C interface 122b are located at the slide rail 1102, so that when the battery pack is used on the tool, the first Type-C The C interface 122a and the second Type-C interface 122b are completely covered, so as to prevent foreign matter generated when the tool is used from entering the battery pack 100 .

Also, as shown in FIG. 15, in some embodiments, the first Type-C interface 122a and the second Type-C interface 122b are located at the terminal interface 131 and arranged vertically, when the battery pack When used on a tool, the first Type-C interface 122a and the second Type-C interface 122b are completely covered, so as to prevent foreign matter generated when the tool is used from entering the battery pack 100 . The height L3 from the top surface of the battery pack to the bottom surface of the guide rail is in the range of 0-30mm, preferably 11.85mm, and two Type-Cs are distributed between the top surface and the bottom surface of the guide rail.

Also, as shown in Figures 16 and 17, in some embodiments, the first Type-C interface 122a and the second Type-C interface 122b are located on the top surface of the socket part 1102 and arranged side by side , when the battery pack is used on the tool, the first Type-C interface 122a and the second Type-C interface 122b will be completely covered, so that foreign matter generated when the tool is used can be prevented from entering the battery pack, or One of the Type-C ports is on the top surface and the other is on the side.

As shown in Figures 1 to 10, in this embodiment, the second power supply terminal 132, the first power supply system and the second power supply system are integrated on the second circuit board 13, and the first power supply system and The second power supply terminal 132 is connected, and the second power supply system is connected to the first Type-C interface 122a and/or the second Type-C interface 122b to form a first A power supply circuit and a second power supply circuit.

As shown in Figures 1 to 10, in this embodiment, the charger includes a charger housing 21, a first charging interface and a first power supply terminal 23, and the first charging interface and the first power supply terminal 23 is located on different two sides of the charger housing 21, preferably on opposite sides of the charger housing 21, and a first circuit board is installed in the charger housing 21, and the first circuit board is installed in the charger housing 21. One end of a charging interface is electrically connected to the first circuit board, and the other end is located in the through hole on the side of the charger housing 21, so as to be connected to the battery pack 100 through a charging line, and the first power supply terminal 23 is electrically connected to the first circuit board, and the first power supply terminal 23 is used to connect to an external power supply. In this embodiment, the first charging interface is a third Type-C interface 22 .

As shown in Figure 18 and Figure 19, an AC-DC module 1002, a control and protocol module 1004, and a DC-DC module 1003 are integrated on the first circuit board, and the AC-DC module 1002 and the DC-DC module 1003, the DC-DC module 1003 is connected to the first charging interface, and the control and protocol module 1004 is respectively connected to the DC-DC module 1003 and the first charging interface. The first charging interface includes a plurality of Type-C interfaces, and each Type-C interface is connected to a DC-DC module 1003, and the control and protocol module 1004 is connected to each of the DC-DC modules respectively. 1003 is connected to each of the Type-C interfaces, the AC-DC module 1002 is used to convert alternating current into direct current; the DC-DC module 1003 is used to give a suitable charging voltage according to the control signal; the control and protocol module 1004 is used For the control of the entire charging system, as well as protocol analysis and charging control for each Type-C port, the first charging interface is connected to the second charging interface on the battery pack to charge the battery pack.

Specifically, as shown in Figure 1 and Figure 18, in this embodiment, when a third Type-C interface 22 is provided on the charger housing 21, the battery pack passes through the first Type-C The C interface 122a and the second Type-C interface 122b are respectively connected to the third Type-C interfaces 22 of the two chargers. In this embodiment, when the charger housing 21 is provided with two interfaces, the two interfaces are the third Type-C interface 22a and the third Type-C interface 22b, the battery pack 100 passes through the first The Type-C interface 122a and the second Type-C interface 122b are respectively connected to the third Type-C interface 22a and the third Type-C interface 22b on the same charger. In some other embodiments, the charger 20 can also charge different battery packs with different first charging interfaces.

Please refer to Fig. 20, the embodiment of the utility model discloses a charging control system, the charging control system is applied to a battery pack that adopts multiple Type-C interfaces 122 for charging, and the charging control system is used to detect the charge on each Type-C interface. The device type of the connected device. If it is a charging device, the battery pack will be charged.

It should be understood that the battery pack 100 includes a plurality of batteries for storing electrical energy, and each battery can be charged through each Type-C interface after being combined with each other. For the convenience of description, this embodiment uses two Type-C interfaces as example to illustrate.

It should be understood that the above-mentioned Type-C interface is a USB standard interface, and its interface type is a double-sided model that can adapt to front and back insertion, and supports the USB PD fast charging protocol (USB Power Delivery Specification, USB fast charging standard). In this embodiment, the Type-C interface pins include VBUS, CC, D+, D-, and GND.

Correspondingly, the access device is also equipped with a Type-C interface, and the interaction between the access device and the battery pack should meet the Type-C general communication protocol or proprietary communication protocol. Wherein, when the access device is a charging device, it may be a gallium nitride charger.

Please refer to Fig. 21, the battery pack in this embodiment can also include a power supply terminal 132, and the charging control system is also used to detect the type of equipment connected to the power supply terminal, if each Type-C interface and/or the connection on the power supply terminal If the device type of the input device is a charging device, the battery pack 100 is charged.

It should be understood that the power supply terminal 132 is a conventional configuration of the battery pack. In this embodiment, its pins include: P+, CHG, COM, and P-, wherein P+ and P- are used for discharging, CHG is used for charging, and COM is used for connecting with the external Device communication.

It should be noted that this embodiment includes two Type-C interfaces and one power supply terminal. In practical applications, multiple Type-C interfaces can be set as needed. By adjusting the charging or discharging power, the charging and discharging speed can be accelerated. , which is convenient for users to use.

Please refer to FIG. 22 , the charging control system includes: a detection module 170 , a control module 180 and a plurality of voltage regulation modules 160 .

The detection module 170 is used to obtain the battery parameters of the batteries of the battery pack 100 and the circuit parameters of the Type-C circuit in real time;

It should be understood that the Type-C loop is the relevant circuit from the Type-C interface to the battery inside the battery pack. The Type-C loop in this embodiment includes the Type-C interface 122, the detection module 170, the control module 180, and various voltage regulators. Module 160 and battery cells.

The control module 180 is used to judge the device type of the connected device according to the interface signal of each Type-C interface; it is also used to output the control signal to each voltage regulation module 160 according to the battery parameters and circuit parameters; wherein, the battery parameters include battery cells Voltage, current, and temperature; loop parameters include loop voltage, loop current, power device temperature, and input/output voltage.

A plurality of voltage regulation modules 160 correspond to each Type-C interface 122 one by one, and each voltage regulation module 160 is connected in series between the battery cell and the corresponding Type-C interface 122, and the control terminals of each voltage regulation module 122 are respectively It is electrically connected with the control module 180 and is used for adjusting the input voltage of the battery cell according to the control signal of the control module 180 .

Referring to FIG. 23 , optionally, the control module 180 includes: a first control unit 1801 and a second control unit 1802 .

The first control unit 1801 is configured to acquire the state of the battery pack according to the battery parameters and transmit it to the second control unit 1802;

The second control unit 1802 is used to judge the device type of the connected device according to the interface signal of each Type-C interface 122 ; and is also used to output a control signal to each voltage regulation module 160 according to the state of the battery pack and the circuit parameters.

It should be understood that during the charging process of the battery pack 100, the parameter range of the battery cell can be preset according to the needs of use, and the status of the battery pack can be judged according to the parameter range. The status of the battery pack in this embodiment includes abnormal, normal, charging protection And discharge protection, in practical applications, users can also subdivide according to needs.

Please refer to FIG. 21 , the first control unit 1801 communicates with the second control unit 1802 for real-time data interaction, and the interaction method may be I2C or UART communication. In order to improve communication efficiency and anti-interference ability, in this embodiment, select 4 groups of I/O ports among the multiple I/O ports of the first control unit 1801 and the second control unit 1802 to realize data interaction

The first control unit 1801 obtains the state of the battery pack according to the battery parameters, and transmits it to the second control unit 1802 through the high and low levels of each pin, and the second control unit 1802 charges/charges the battery pack through the Type-C interface according to the state of the battery pack. discharge. Wherein, the parameter corresponding to the state of the battery pack is denoted as OVP.

The second control unit 1802 performs universal protocol matching with the access device on the Type-C interface 122, judges whether the access device is a charging device or a discharge device, and transmits to the first control unit 1801 through the high and low levels of each pin.

It should be noted that the above communication protocol is still applicable to multiple Type-C interfaces, any Type-C interface is connected to an access device equipped with a Type-C interface, and after the handshake with the second control unit 1802 is successful, The second control unit 1802 can perform data interaction with the first control unit 1801 .

With this solution, the control system detects the battery parameters and circuit parameters in real time during the charging/discharging process, executes the charging/discharging protection logic according to the battery parameters and circuit parameters, and dynamically adjusts the input/output power, realizing the safe and fast operation of the battery pack. charging/discharging function.

Please refer to FIG. 23 and FIG. 24 , optionally, each voltage regulation module 160 includes: a full-bridge drive unit 1601 and a full-bridge power unit 1602 .

a full bridge drive unit 1601, configured to output a drive signal to the full bridge power unit 1602 according to the control signal of the second control unit 1802;

The full-bridge power unit 1602 is connected in series between the Type-C interface 122 and the battery cell, and its control terminal is connected to the full-bridge drive unit 1601 for adjusting the input voltage of the battery cell according to the driving signal.

Optionally, the detection module 170 includes: a first detection unit 1701 and a second detection unit 1701 .

The first detection unit 1701 is used to obtain battery parameters in real time and transmit them to the first control unit 1801;

The second detection unit 1702 is configured to acquire loop parameters in real time and transmit them to the second control unit 1802 .

To further illustrate, the charging control system also includes:

The activation unit 110 is used to activate the first control unit 1801 according to the activation signal; the activation signal is obtained through the connection status of each Type-C interface and/or pressing any one or several of the activation buttons; it should be understood that the battery pack is set There is an activation button for controlling the on-off of the power supply circuit. After the activation button is pressed, a pull-up or pull-down activation signal can be generated.

The first control unit 1801 is further configured to detect the state of the battery pack after being activated, and activate the second control unit 1802 if the state of the battery pack is not abnormal.

With this solution, the battery pack 100 is in a dormant state when there is no activation signal, and at this time both the first control unit 1801 and the second control unit 1802 are powered off; when the activation signal is received, the first control unit 1801 first detects the state of the battery pack , if the state of the battery pack is normal, the second control unit 1802 is activated, otherwise, the charging process is stopped, which not only saves electric energy, but also prevents damage to the battery cells.

In addition, after the charging of the battery pack 100 is completed, the first control unit 1801 can also output a control signal to the second control unit 1802 to power off, and the first control unit 1801 powers off itself after a delay of a certain period of time, thereby saving electric energy.

Continuing to explain, the charging control system further includes: a Type-C communication unit 192, which is connected in series between the second control unit 1802 and each Type-C interface 122, and the second control unit 1802 can communicate with each Type-C interface 122 through the Type-C communication unit 192 The access devices on the Type-C interface 122 are communicatively connected, so as to obtain interface signals through each Type-C interface, and the interface signals include the device type of the access device, charging request and charging voltage.

Continuing to explain, the charging control system also includes: a plurality of Type-C protection units 152, which correspond to the voltage regulation module 160 and the Type-C interface 122 respectively, and are connected in series to the corresponding full-bridge power unit 1602 and Type-C between the interfaces 122 , and its control terminal is connected to the second control unit 1802 for charging protection according to the protection instruction of the second control unit 1802 .

The second control unit 1802 is also configured to output protection instructions to each Type-C protection unit 152 according to the state of the battery pack and the circuit parameters.

Please refer to FIG. 24, when the battery pack also includes a power supply terminal 132, the charging control system also includes:

The terminal communication unit 191 is connected in series between the power supply terminal 132 and the first control unit 1801 , and is used for communication connection between the first control unit 1801 and the access device on the power supply terminal 132 .

The terminal protection unit 151 is connected in series between the power supply terminal 132 and the battery cell, and its control terminal is connected to the first control unit 1801 for charging protection according to the protection instruction of the first control unit 1801. The first control unit 1801 , which is also used to output a protection instruction to the terminal protection unit 151 according to the battery parameters.

It should be noted that when the battery pack also includes the power supply terminal 132, the activation signal received by the activation unit 110 is any one of the connection status through the Type-C interfaces 122, the connection status of the power supply terminal 132 or pressing the activation button. or several to get.

The second control unit 1802 is also configured to transmit the device type of the access device on each Type-C interface to the first control unit 1801;

The first control unit 1801 is further configured to determine the device type of the connected device according to the interface signal of the power supply terminal 132;

After the first control unit 1802 receives the device type of the device connected to the Type-C interface 122 or the power supply terminal 132, if it is a charging device, it will judge whether it has received the charging request sent by the charging device. The state judges whether the battery pack needs to be charged, and if necessary, the battery pack is charged.

It should be noted that when there is an access device on the power supply terminal 132, but no access device is detected on the Type-C interface 122, the first control unit 1801 also outputs a control signal to the second control unit 1802 to make it sleep, saving Electricity: when the first control unit receives the activation signal again and the state of the battery pack is not abnormal, the second control unit is activated again.

It can be seen that the charging control system in the above embodiment is applied to a battery pack that uses multiple Type-C interfaces and/or power supply terminals for charging, supports the USB PD fast charging protocol, and can detect multiple Type-C interfaces and/or power supply terminals in real time. According to the type of device connected to the power supply terminal, the battery pack can be charged quickly according to the type of device, and the charging power can be adjusted according to the connected device within a certain range. It is suitable for a variety of connected devices with different voltages, which is convenient for users to use; And during the charging process, the technical parameters of the battery pack are detected in real time, and the charging protection logic is executed according to the technical parameters, and the input power is dynamically adjusted, which can effectively protect the safety of the battery pack and prolong the service life of the battery pack.

Please refer to Fig. 25 to Fig. 27. Another embodiment of the present invention discloses a charging control method, which is applied to a battery pack using multiple Type-C interfaces for charging. The charging control method includes:

Detect the device type of the connected device on each Type-C interface, and if it is a charging device, charge the battery pack.

Optionally, the charging control method further includes:

After receiving the activation signal, activate the charging control system;

Detect the status of the battery pack. If the status of the battery pack is non-abnormal, then judge whether there is an access device on each Type-C interface; among them, the status of the battery pack is obtained by judging the battery parameters in real time. The battery parameters include the voltage, current and temperature.

With this scheme, the battery pack is in a dormant state when there is no activation signal, and the charging or discharging process starts only after receiving the activation signal and the state of the battery pack is non-abnormal, which not only saves power, but also prevents damage to the battery cells .

If an access device is detected, a communication handshake is performed with the access device.

Referring to Figure 25 to Figure 27, the steps for detecting the device type of the device connected to the Type-C interface include:

Perform communication handshake with the access device. If the handshake is successful, the type of communication handshake is judged. If the type of communication handshake is charging handshake, it is a charging device.

Continuing to explain, if it is a charging device, the steps for charging the battery pack include:

If it is a charging device, judge whether it has received a charging request from the charging device. If so, judge whether it needs to be charged according to the state of the battery pack. If so, charge the battery pack and execute the charging protection logic; when receiving the charging request , The state of the battery pack should be detected first, and charging is allowed only when it is non-abnormal, thereby avoiding damage to the battery cell caused by overcharging or undervoltage, which affects its service life.

Please refer to Figure 25 and Figure 27, the charging protection logic includes:

Determine the charging voltage of the battery pack according to the interface signal of the Type-C interface;

Charge the battery pack according to the charging voltage;

During the charging process, monitor whether the circuit parameters are abnormal, if abnormal, adjust the circuit voltage and circuit current, if the adjustment is still abnormal, stop charging; among them, the circuit parameters include circuit voltage, circuit current, power device temperature and input/output voltage;

When the state of charge of the cell is greater than the preset maximum charge value, charging is complete.

Optionally, the steps of the charging protection logic also include:

Charge protection logic also includes:

During the charging process, the status of the battery pack is monitored in real time; if the status of the battery pack is abnormal, the charging is stopped.

It should be noted that in practical applications, the parameter range can be set according to the use needs during the charging/discharging process. When the charging parameter or discharging parameter exceeds the preset parameter range, it is considered abnormal, and the charging/discharging can be performed according to the preset logic. The discharge voltage and the charging/discharging current are dynamically adjusted, and the number of adjustments can be one or more times, and the specific number of times can be set according to needs, and in this embodiment, it is 5 times.

It should be understood that both the maximum charge value and the minimum discharge value are preset values, which can be determined according to the index parameters of the battery pack, and the index parameters generally include capacity, voltage, charge voltage, charge current, discharge voltage, and discharge current; in this embodiment The maximum charge value is SOC=100%, and the minimum discharge value is SOC=5%. In practical applications, users can set the above values according to their needs.

Continuing to explain, when the battery pack also includes a power supply terminal, the charging control method includes:

Detect the device type of the device connected to the power supply terminal, and charge the battery pack if the device type of each Type-C interface and/or the device connected to the power supply terminal is a charging device.

It can be seen that the charging control method in the above embodiment is applied to a battery pack that uses multiple Type-C interfaces and/or power supply terminals for charging, supports the USB PD fast charging protocol, and can detect multiple Type-C interfaces and/or power supply terminals in real time. According to the type of device connected to the power supply terminal, the battery pack can be charged quickly according to the type of device, and the charging power can be adjusted according to the connected device within a certain range. It is suitable for a variety of connected devices with different voltages, which is convenient for users to use; And during the charging process, the technical parameters of the battery pack are detected in real time, and the charging protection logic is executed according to the technical parameters, and the input power is dynamically adjusted, which can effectively protect the safety of the battery pack and prolong the service life of the battery pack.

Please refer to FIG. 28 , another embodiment of the present invention discloses a charging system, including: a detachably connected battery pack 100 and a charger 200, the battery pack 100 can be charged by the charger 200, the battery pack 100 and the charger 200 The charger 200 is consistent with the structure described in the above embodiments;

The battery pack 100 includes: a plurality of Type-C interfaces 122, a charging control system and a cell assembly 120; the charging control system is connected in series between each Type-C interface 122 and the cell assembly 120, and each Type-C interface 122 can be Disconnect and connect the access device, the charging control system detects the device type of the access device, if it is a charging device, the battery pack 100 is charged;

The charger 200 is provided with at least one Type-C interface 22 , and the Type-C interface 22 of the charger 200 matches the Type-C interface 122 of the battery pack 100 .

It should be understood that the two Type-C interfaces where the charger 200 and the battery pack 100 are connected are male and female, which is convenient for users to connect; in addition, the above-mentioned battery pack 100 and charger 200 may also include a power supply terminal 132 and an insert 23, The charger 200 can also charge the battery pack 100 through the insertion piece 23 , and correspondingly, the power supply terminal 132 and the insertion piece 23 electrically connected to each other are also matched male and female connectors.

The utility model proposes a charging system. By setting at least two Type-C interfaces on the battery pack, the battery pack can provide power for other consumer electronic products, and the battery pack can also be powered by connecting two chargers. Charging to improve charging efficiency, and by setting two Type-C interfaces on the charger to realize that one charger can charge multiple battery packs at the same time, or use one charger to charge the same above-mentioned battery pack, To improve charging efficiency.

The above description is only a preferred embodiment of the application and an explanation of the technical principle used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solution formed by the specific combination of the above technical features. At the same time, it should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the concept of the utility model. For example, the above-mentioned features are similar to (but not limited to) disclosed in the application A technical solution formed by replacing technical features of a function with each other.

Except for the technical features described in the specification, the rest of the technical features are known to those skilled in the art. In order to highlight the innovative features of the present utility model, the rest of the technical features will not be repeated here.

Claims (12)

1. A charger, characterized in that, comprising: A charger housing, in which a first circuit board is installed, a first charging interface and a first power supply terminal are arranged on the charger housing, and the first charging interface and the first power supply terminal are respectively connected to the the first circuit board is electrically connected; Wherein, the first circuit board is integrated with an AC-DC module, a control and protocol module, and a DC-DC module, the AC-DC module is electrically connected to the DC-DC module, and the DC-DC module is connected to the DC-DC module. The first charging interface is electrically connected, the control and protocol module is electrically connected to the DC-DC module and the first charging interface, and the first charging interface is a Type-C interface. 2. A charger according to claim 1, wherein the first charging interface includes a plurality of Type-C interfaces, and each Type-C interface is connected to a DC-DC module, and The control and protocol modules are respectively connected to each of the DC-DC modules and each of the Type-C interfaces. 3. A charging system, characterized in that, comprising: A charger, the charger includes a charger housing, in which a first circuit board is installed, and a first charging interface and a first power supply terminal are arranged on the charger housing, and the first charging interface and the The first power supply terminals are respectively electrically connected to the first circuit board; Wherein, the first circuit board is integrated with an AC-DC module, a control and protocol module, and a DC-DC module, the AC-DC module is connected to the DC-DC module, and the DC-DC module is connected to the The first charging interface is connected, and the control and protocol modules are respectively connected to the DC-DC module and the first charging interface; A battery pack, the battery pack includes a battery pack housing, in which a battery cell assembly and a second circuit board are arranged, and the second circuit board is electrically connected to the battery pack; A plurality of second charging interfaces are arranged on the battery pack casing and are electrically connected to the second circuit board; When the charger is charging the battery pack, the first charging interface is electrically connected to the second charging interface, and the first charging interface and the second charging interface are configured as Type-C interfaces. 4. A charging system according to claim 3, wherein the cell assembly includes a plurality of cells, the plurality of cells are installed in a cell bracket, and the cell bracket is located in the Inside the battery pack casing, and the battery cells are connected through electrode sheets. 5. The charging system according to claim 3, wherein the second charging interface includes at least a first Type-C interface and a second Type-C interface, and the first Type-C interface and the second Type-C interface The second Type-C interfaces are respectively assembled on the circuit board and electrically connected with the circuit board. 6 . The charging system according to claim 5 , wherein a plug-in portion is provided on the top of the battery pack housing, and slide rails are provided on both sides of the plug-in portion. 7 . 7. A charging system according to claim 6, wherein a terminal interface is installed on the top of the battery pack housing, the terminal interface is located between the slide rails, and the terminal interface is connected to the The above circuit board is electrically connected. 8 . The charging system according to claim 6 , wherein the first Type-C interface and the second Type-C interface are located on two sides or the same side of the socket. 9. The charging system according to claim 6, wherein the first Type-C interface and the second Type-C interface are located on the top surface of the socket. 10. The charging system according to claim 5, wherein the first Type-C interface and the second Type-C interface are located on the same side or both sides of the battery pack casing. 11. A charging system according to claim 3, wherein when the first charging interface includes a Type-C interface, the battery pack is connected to two chargers through a plurality of second charging interfaces. Connect to the first charging port on the phone. 12. A charging system according to claim 3, wherein when the first charging interface includes two Type-C interfaces, the battery pack is connected to the same charger through a plurality of second charging interfaces. connected to the two first charging interfaces, or charge different battery packs through different first charging interfaces on the charger.

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