Integrated busbar, battery module and battery pack

Abstract

The present disclosure relates to an integrated busbar, a battery module and a battery pack, and belongs to the technical field of battery design. The integrated busbar comprises a bracket, a plurality of circuit boards, a plurality of pads and a plurality of connecting bars. The bracket has a plurality of battery mounting areas, each of which is used to provide a mounting space for one battery, and each battery mounting area has a first void hole. Each circuit board is connected to the bracket and part of the plurality of pads, and each circuit board has a second void hole arranged opposite to the first void hole. The plurality of connecting bars are used to connect a plurality of batteries assembled to the plurality of battery mounting areas, and each connecting bar is connected to at least one pad. By using the present disclosure, it is ensured that the integrated busbar can collect the state information of all batteries, thereby improving the comprehensiveness of the collected data and further improving the accuracy of the collected battery state information.

Description

Technical Field

[0001] This disclosure relates to the field of battery design technology, and in particular to an integrated busbar, battery module and battery pack. Background Technology

[0002] CCS (Cells Contact System) is an important component in the battery module used for electrical connections and signal monitoring.

[0003] Currently, integrated busbars typically include a vacuum-formed bracket, multiple connectors, an FPC (Flexible Printed Circuit), and multiple pads. The vacuum-formed bracket provides space for battery installation, the multiple connectors connect multiple batteries assembled to the vacuum-formed bracket in series, the pads are connected to the connectors, and the FPC is connected to the multiple pads and the BMS (Battery Management System) so that the BMS can collect battery status information in real time through the FPC and voltage and temperature sensing elements set on the pads.

[0004] However, considering safety requirements, vias are needed on the FPC. The presence of these vias limits the wiring space within the FPC, meaning the number of pads that can be connected is limited. When there are a large number of batteries in a battery module, the integrated busbar cannot collect battery status information for all batteries, resulting in poor accuracy of the collected battery status information. Utility Model Content

[0005] This disclosure provides an integrated busbar, battery module, and battery pack, which can solve the technical problems existing in related technologies. The technical solution for the integrated busbar, battery module, and battery pack is as follows:

[0006] In a first aspect, this disclosure provides an integrated busbar, which includes a bracket, multiple circuit boards, multiple pads, and multiple connectors;

[0007] The bracket has multiple battery mounting areas, each of which provides mounting space for one battery.

[0008] Each circuit board is connected to the bracket and a portion of the plurality of pads;

[0009] The plurality of connection bars are used to connect the plurality of batteries assembled to the plurality of battery mounting areas, and each connection bar is connected to at least one pad.

[0010] In one possible implementation, the plurality of circuit boards are stacked together.

[0011] In one possible implementation, the plurality of circuit boards includes a first circuit board and a second circuit board;

[0012] The first circuit board is connected to the bracket;

[0013] The second circuit board is located on the side of the first circuit board away from the bracket and covers a portion of the first circuit board.

[0014] In one possible implementation, the end of the first circuit board is flush with the end of the second circuit board.

[0015] In one possible implementation, the plurality of pads includes a plurality of first pads and a plurality of second pads;

[0016] The plurality of first pads are respectively connected to the portion of the first circuit board that is not covered by the second circuit board;

[0017] The plurality of second pads are respectively connected to the second circuit board.

[0018] In one possible implementation, the circuit board includes a connected circuit board body and a connector;

[0019] The circuit board body is connected to the bracket and the solder pad respectively;

[0020] The connector is used to connect to the battery management system.

[0021] In one possible implementation, the plurality of circuit board bodies are bonded together.

[0022] In one possible implementation, multiple connectors are distributed along a direction perpendicular to the circuit board body.

[0023] In one possible implementation, the integrated busbar further includes a fixing member having a first through slot with a plurality of spaced-apart snap-fit ​​structures, each snap-fit ​​structure snapping into a connector.

[0024] In one possible implementation, the fastener further has a second through slot that is not connected to the first through slot, and one of the plurality of connecting rows is located within the second through slot.

[0025] In one possible implementation, the plurality of battery mounting areas are arranged in a matrix.

[0026] In one possible implementation, the circuit board is a flexible circuit board.

[0027] In a second aspect, this disclosure provides a battery module, the battery module including the integrated busbar in the first aspect and its possible implementations.

[0028] Thirdly, this disclosure provides a battery pack, which includes the battery module as described in the second aspect and its possible implementations.

[0029] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0030] This disclosure provides an integrated busbar with multiple circuit boards. In this way, given the limited number of pads that each circuit board can connect to, the total number of pads that can be connected to all circuit boards is increased by increasing the number of circuit boards. This ensures that each busbar is connected to at least one pad, guaranteeing that all integrated busbars can collect the status information of all batteries, thereby improving the comprehensiveness of the collected data and the accuracy of the collected battery status information.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of an integrated busbar structure shown in an embodiment of this disclosure;

[0034] Figure 2 This is a schematic diagram of an integrated busbar structure shown in an embodiment of this disclosure;

[0035] Figure 3 This is a schematic diagram of an integrated busbar structure shown in an embodiment of this disclosure;

[0036] Figure 4 This is a schematic diagram of an integrated busbar structure shown in an embodiment of this disclosure;

[0037] Figure 5 This is a schematic diagram of an integrated busbar structure shown in an embodiment of this disclosure;

[0038] Figure 6 This is a schematic diagram of an integrated busbar structure shown in an embodiment of this disclosure;

[0039] Figure 7 This is a schematic diagram of an integrated busbar structure shown in an embodiment of the present disclosure.

[0040] Legend

[0041] 1. Bracket;

[0042] 100. Battery mounting area; 101. Positive electrode receiving hole; 102. First clearance hole; 103. Negative electrode receiving hole; 104. Positioning post;

[0043] 2. Circuit board; 200. Second clearance hole;

[0044] 201. Circuit board body; 202. Connector;

[0045] 201a, Positioning hole;

[0046] 21. First circuit board; 22. Second circuit board;

[0047] 2011, First circuit board body; 2012, First connector;

[0048] 2021, Second circuit board body; 2022, Second connector;

[0049] 3. Solder pads;

[0050] 31. First pad; 32. Second pad;

[0051] 4. Connecting strip;

[0052] 401, Output connector; 4011, Through hole;

[0053] 5. Fasteners;

[0054] 501, First through slot; 502, Second through slot;

[0055] 5011, snap-fit ​​structure; 5021, threaded hole. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0057] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0058] The CCS (Cells Contact System) is a crucial component within a battery module for electrical connections and signal monitoring. Currently, an integrated busbar typically includes a blister pack, multiple connectors, an FPC (Flexible Printed Circuit), and multiple pads. The blister pack has a rectangular plate structure with multiple mounting areas, each providing space for one battery. Each mounting area has a positive terminal receiving hole, a negative terminal receiving hole, and a first clearance hole located between them. The positive terminal receiving hole accommodates the positive terminal of the battery, and the negative terminal receiving hole accommodates the negative terminal. The first clearance hole allows for rapid release of internal pressure in the event of thermal runaway in the corresponding battery, preventing a chain reaction. Connectors cover the blister pack and bridge the positive and negative terminals of adjacent batteries to connect multiple batteries in series. Pads are fixed to the upper surface of the connectors and provide mounting space for voltage and temperature sensing elements. The FPC (Flexible Printed Circuit) has multiple second-level clearance holes, each corresponding to a first-level clearance hole. The FPC connects to the BMS (Battery Management System) and multiple pads, enabling the BMS to collect real-time battery status information via the FPC and voltage and temperature sensing elements located on the pads. However, for elongated battery modules (multiple batteries distributed along the same direction), the FPC in the integrated busbar is also relatively long and narrow. The second-level clearance holes occupy a large portion of the FPC's area, resulting in a small remaining area for wiring and a limited number of parallel lines. In other words, the number of pads that the FPC can connect to is very limited. When there are many batteries in the battery module, it is impossible to place pads on each connection busbar, causing the BMS to only collect battery status information from a portion of the batteries, resulting in poor accuracy of the collected battery status information.

[0059] This disclosure provides an integrated busbar, such as Figure 1 As shown, the integrated busbar includes a bracket 1, multiple circuit boards 2, multiple solder pads 3, and multiple connection bars 4.

[0060] The bracket 1 is a component that provides mounting space for the battery. Bracket 1 can also be formed using a vacuum forming process, and therefore can also be called a vacuum-formed bracket. See also... Figure 2The support 1 has a long, rectangular plate-like structure and multiple battery mounting areas 100. These areas are spaced apart along the length of the support 1, and each area provides mounting space for one battery. Specifically, each battery mounting area 100 is rectangular and contains a positive electrode receiving hole 101 and a negative electrode receiving hole 103. These holes are arranged sequentially in a direction perpendicular to the length of the support 1. The positive electrode receiving hole 101 accommodates the positive terminal of the battery, and the negative electrode receiving hole 103 accommodates the negative terminal of the battery. Furthermore, each battery mounting area 100 also contains a first clearance hole 102. This first clearance hole 102 is located between the positive electrode receiving hole 101 and the negative electrode receiving hole 103. It is positioned opposite to an explosion-proof valve mounted on the battery cell, providing clearance for the valve and ensuring rapid pressure relief in the event of thermal runaway.

[0061] Multiple circuit boards 2 are used for electrical connection with the battery management system. Each circuit board 2 is connected to a bracket 1 and a portion of the multiple solder pads 3. Furthermore, the circuit board 2 has a second vent hole 200 arranged opposite to the first vent hole 102. The second vent hole 200 also provides clearance space for the explosion-proof valve on the battery cell, thereby ensuring that in the event of thermal runaway, the internal pressure of the battery can be discharged to the outside of the battery in sequence through the explosion-proof valve, the first vent hole 102, and the second vent hole 200.

[0062] The pad 3 is used to connect the circuit board 2 and the connection bar 4, and the pad 3 is used to provide mounting space for information detection elements, which can be voltage detection elements and / or temperature detection elements.

[0063] The system includes multiple connecting bars 4 for connecting multiple batteries assembled to multiple battery mounting areas 100, with each connecting bar 4 connected to at least one pad 3. Specifically, the multiple connecting bars 4 are used to connect multiple batteries assembled to multiple battery mounting areas 100 in series. The pads 3 are fixed to the wall surface of the connecting bars 4 away from the batteries and are electrically connected to the circuit board 2. Information detection elements are connected to the pads 3. In implementation, the information detection elements periodically perform detection, generating voltage detection signals and temperature detection signals. The battery management system sends acquisition signals to the information detection elements through the circuit board 2. After receiving the acquisition signals, the information detection elements send the detection signals detected at the previous moment to the battery management system through the circuit board 2.

[0064] By adopting the technical solution provided in the embodiments of this disclosure, multiple circuit boards 2 are provided in the integrated busbar. In this way, when the number of solder pads 3 that each circuit board 2 can connect to is limited, by increasing the number of circuit boards 2, the total number of solder pads 3 that all circuit boards 2 can connect to is increased, so that each connecting busbar 4 is connected to at least one solder pad 3, ensuring that all integrated busbars can collect the status information of all batteries, thereby improving the comprehensiveness of the collected data and thus improving the accuracy of the collected battery status information.

[0065] In some possible embodiments, the circuit board 2 includes a circuit board body 201 and a connector 202.

[0066] like Figure 3 As shown, the circuit board body 201 is a long, thin plate structure. The circuit board body 201 has multiple second clearance holes 200, each of which is circular in shape. Figure 2 As shown, the first vent hole 102 is also circular in shape. The diameters of the second vent holes 200 and the first vent hole 102 can be equal, and multiple second vent holes 200 are spaced apart along the length of the circuit board body 201. The connector 202 is connected to the circuit board body 201 and is used for electrical connection with the battery management system.

[0067] Specifically, connector 202 is connected to the end of circuit board body 201.

[0068] Optionally, circuit board 2 can be a flexible circuit board or a printed circuit board. For example... Figure 4 As shown, when the circuit board 2 is a flexible circuit board, the upper surface of the circuit board body 201 can have wiring, and the end of the circuit board body 201 can be bent so that some wiring is located on the lower surface of the circuit board body 201, and the connector 202 is connected to the lower surface of the bent part of the circuit board body 201.

[0069] In some examples, the circuit board body 201 is connected to the bracket 1 and the pad 3, respectively.

[0070] like Figure 3 As shown, the top wall of the bracket 1 has multiple positioning posts 104, such as... Figure 2 As shown, the circuit board body 201 has multiple positioning holes 201a, each positioning hole 201a accommodating a positioning post 104. In this way, the relative sliding between the positioning post 104 and the positioning hole 201a can be avoided through the cooperation between the circuit board body 201 and the bracket 1.

[0071] In some possible embodiments, multiple circuit boards 2 are stacked.

[0072] In some examples, multiple circuit boards 2 are completely stacked, that is, for every two adjacent circuit boards 2, the circuit board 2 farther away from the support 1 completely covers the circuit board 2 closer to the support 1.

[0073] In some examples, multiple circuit boards are stacked in two parts.

[0074] like Figure 2 As shown, the multiple circuit boards 2 include a first circuit board 21 and a second circuit board 22. The first circuit board 21 is located on the side of the bracket 1 away from the battery (battery not shown in the figure) and is connected to the bracket 1. The second circuit board 22 is located on the side of the first circuit board 21 away from the bracket 1 and is connected to the first circuit board 21. The second circuit board 22 covers a portion of the first circuit board 21.

[0075] In one example, the end of the first circuit board 21 is flush with the end of the second circuit board 22.

[0076] See Figure 2 and Figure 4 The first circuit board 21 includes a first circuit board body 2011 and a first connector 2012, and the second circuit board 22 includes a second circuit board body 2021 and a second connector 2022.

[0077] Specifically, the first end of the first circuit board body 2011 is flush with one end of the bracket 1, and the second end of the first circuit board body 2011 extends beyond the other end of the bracket 1; that is, the length of the first circuit board body 2011 is greater than the length of the bracket 1. The first end of the second circuit board body 2021 is connected to the middle of the first circuit board body 2011, and the second end of the second circuit board body 2021 extends beyond the other end of the bracket 1, and the second end of the second circuit board body 2021 is flush with the second end of the first circuit board body 2011. That is, in the direction perpendicular to the bracket 1, the second circuit board body 2021 covers the portion of the first circuit board body 2011 from the middle to the second end.

[0078] In some examples, such as Figure 2 As shown, the plurality of pads 3 include a plurality of first pads 31 and a plurality of second pads 32. The plurality of first pads 31 are respectively connected to the portion of the first circuit board 21 not covered by the second circuit board 22. The plurality of second pads 32 are respectively connected to the second circuit board 22.

[0079] Specifically, the first circuit board body 2011 has a plurality of first connection pins, which are distributed on both sides of the width direction of the first circuit board body 2011 and spaced apart along the length direction of the first circuit board body 2011. Among these first connection pins, each of the plurality of first connection pins not covered by the second circuit board 22 is connected to a first pad 31, and each first pad 31 is connected to a connection row 4. Correspondingly, the second circuit board body 2021 has a plurality of second connection pins, which are distributed on both sides of the width direction of the second circuit board body 2021 and spaced apart along the length direction of the second circuit board body 2021. Each of these second connection pins is connected to a second pad 32, and each second pad 32 is connected to a connection row 4.

[0080] Furthermore, such as Figure 2 As shown, along the length of the bracket 1, a first circuit board body 2011 covers the entire bracket 1. The circuit board body 201 includes a first portion and a second portion of equal length. The first portion is the part away from the connector 202, and the second portion is the part closer to the connector 202. Each first connection pin in the first portion is connected to a first pad 31, while the first connection pins in the second portion are not connected to any pad 31. The second circuit board body 2021 overlaps with the second portion of the first circuit board body 2011, meaning the second circuit board body 2021 covers the second portion of the first circuit board body 2011.

[0081] On the other hand, see Figure 2 From the perspective of the bracket 1, the bracket 1 has multiple battery mounting areas 100 distributed along its length. Multiple connecting bars 4 are used to bridge the positive electrode receiving holes 101 and negative electrode receiving holes 103 in the battery mounting areas 100, so that multiple batteries assembled to the multiple battery mounting areas 100 are connected in series. For the portion of the multiple connecting bars 4 furthest from the connector 202, each connecting bar 4 corresponds to the position of a first connecting pin in the first portion and is connected to a first connecting pin. For the portion of the multiple connecting bars 4 closest to the connector 202, each connecting bar 4 corresponds to the position of a second connecting pin in the second circuit board body 2021 and is connected to a second connecting pin.

[0082] In some examples, each connection row 4 may be connected to the first circuit board 21 and / or the second circuit board 22.

[0083] like Figure 2As shown, for the portion of the multiple connection rows 4 furthest from the connector 202, each connection row 4 is connected to the first circuit board body 2011 of the first circuit board 21 only through the first pad 31. For the portion of the multiple connection rows 4 furthest from the connector 202, each connection row 4 is connected to the second circuit board body 2021 of the second circuit board 22 only through the second pad 32. For the connection row 4 located at the transition position between the first circuit board 21 and the second circuit board 22, this connection row 4 is connected to two pads 3 respectively, that is, this connection row 4 is connected to one first pad 31 and one second pad 32 respectively. This connection row 4 is electrically connected to the first circuit board body 2011 of the first circuit board 21 through the first pad 31, and electrically connected to the second circuit board body 2021 of the second circuit board 22 through the second pad 32.

[0084] For example, pad 3 can be connected to circuit board body 201 and connection bar 4 by soldering.

[0085] In some possible embodiments, see Figure 4 Multiple circuit board bodies 201 are bonded together. This prevents relative sliding between the multiple circuit board bodies 201.

[0086] In the above example, the first circuit board body 2011 and the second circuit board body 2021 are bonded together. Exemplarily, multiple circuit board bodies 201 can be bonded together with hot melt adhesive, and this disclosure does not limit this.

[0087] In some possible embodiments, multiple connectors 202 are distributed in a direction perpendicular to the circuit board body 201.

[0088] like Figure 2 and Figure 4 As shown, the multiple circuit boards 2 include a first circuit board 21 and a second circuit board 22, and a first connector 2012 and a second connector 2022 are distributed in a direction perpendicular to the circuit board body 201.

[0089] This allows for a more compact arrangement of multiple connectors 202.

[0090] As is easily understood, the above description uses the integrated busbar as an example, which includes two circuit boards 2. When there are a large number of batteries to be connected, the number of circuit boards 2 in the integrated busbar may be three or more. This disclosure does not limit this.

[0091] In some possible embodiments, the integrated busbar also includes a fixing element 5.

[0092] The fastener 5 can be a one-piece molded component or a separately processed component; this disclosure does not limit this aspect. For example, see [link to example]. Figure 5 The fastener 5 includes a base and a cover plate, which can be engaged with each other by a snap-fit ​​and a protruding structure.

[0093] See in some examples Figure 5 The fastener 5 has a first through groove 501, and the first through groove 501 has a plurality of spaced snap-fit ​​structures 5011, each snap-fit ​​structure 5011 snapping into a connector 202.

[0094] The snap-fit ​​structure 5011 is compatible with the shape and size of the connector 202.

[0095] This avoids multiple connectors 202 from coming into contact and causing a short circuit.

[0096] In some examples, the fastener 5 also has a second through slot 502.

[0097] like Figure 6 As shown, the second through slot 502 is not connected to the first through slot 501. The second through slot 502 is used to accommodate one of the multiple connection slots 4. This connection slot 4 is the connection slot located at the end of the multiple connection slots 4, also known as the output connection slot 401.

[0098] Specifically, see Figure 6 The output connection bar 401 is provided with a through hole 4011, and the second through groove 502 is provided with a threaded hole 5021 on the groove wall. The through hole 4011 and the threaded hole 5021 are arranged opposite to each other.

[0099] In implementation, the output connector 401 is connected to the battery and is a high-voltage circuit, while the connector 202 is connected to the battery management system and is a low-voltage circuit. By using the technical solution provided in this embodiment, and by providing a non-connected first through slot 501 and second through slot 502 on the fixing member 5, high-voltage and low-voltage circuits can be isolated, improving the safety of the integrated busbar.

[0100] For example, the fastener 5 can be an injection molded part, and the fastener 5 can be formed by pressure injection molding. The present disclosure does not limit the processing technology of the fastener 5.

[0101] In some possible embodiments, the multiple battery mounting areas 100 in the bracket 1 may be distributed in a matrix.

[0102] like Figure 7As shown, the bracket 1 has two rows of battery mounting areas 100, which are distributed along the length of the bracket 1. Each row has 17 battery mounting areas 100. Multiple connecting rows 4 are used to connect multiple batteries assembled in the two rows of battery mounting areas 100 in series.

[0103] In this way, the integrated busbar can connect more batteries, further increasing the maximum voltage of the battery module.

[0104] The technical solutions provided in this disclosure have at least the following beneficial effects:

[0105] This disclosure provides an integrated busbar with multiple circuit boards 2. In this way, given the limited number of pads 3 that each circuit board 2 can connect to, the total number of pads 3 that all circuit boards 2 can connect to is increased, ensuring that each connecting busbar 4 is connected to at least one pad 3. This ensures that all integrated busbars can collect the status information of all batteries, thereby improving the comprehensiveness of the collected data and the accuracy of the collected battery status information.

[0106] This disclosure provides a battery module that includes the integrated busbar described above.

[0107] This disclosure provides a battery pack that includes the battery module described above.

[0108] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. An integrated busbar, characterized by, The integrated busbar includes a bracket (1), multiple circuit boards (2), multiple solder pads (3), and multiple connectors (4); The bracket (1) has multiple battery mounting areas (100), each battery mounting area (100) being used to provide mounting space for one battery; Each circuit board (2) is connected to the bracket (1) and a portion of the multiple pads (3); The plurality of connection bars (4) are used to connect a plurality of batteries assembled to the plurality of battery mounting areas (100), and each connection bar (4) is connected to at least one pad (3).

2. The integrated busbar of claim 1, wherein, The multiple circuit boards (2) are stacked together.

3. The integrated busbar of claim 2, wherein, The plurality of circuit boards (2) includes a first circuit board (21) and a second circuit board (22); The first circuit board (21) is connected to the bracket (1); The second circuit board (22) is located on the side of the first circuit board (21) away from the bracket (1) and covers a portion of the first circuit board (21).

4. The integrated busbar of claim 3, wherein, The end of the first circuit board (21) is flush with the end of the second circuit board (22).

5. The integrated busbar of claim 3, wherein, The plurality of pads (3) includes a plurality of first pads (31) and a plurality of second pads (32); The plurality of first pads (31) are respectively connected to the portion of the first circuit board (21) that is not covered by the second circuit board (22); The plurality of second pads (32) are respectively connected to the second circuit board (22).

6. The integrated busbar of claim 3, wherein, Each connection row (4) is connected to the first circuit board (21) and / or the second circuit board (22).

7. The integrated busbar of claim 1, wherein, The circuit board (2) includes a connected circuit board body (201) and a connector (202); The circuit board body (201) is connected to the bracket (1) and the solder pad (3) respectively; The connector (202) is used to connect to the battery management system.

8. The integrated busbar of claim 7, wherein, Multiple circuit board bodies (201) are bonded together.

9. The integrated busbar of claim 7, wherein, Multiple connectors (202) are distributed in a direction perpendicular to the circuit board body (201).

10. The integrated busbar of claim 9, wherein, The integrated busbar also includes a fixing member (5), which has a first through groove (501) and a plurality of spaced snap-fit ​​structures (5011) in the first through groove (501), each snap-fit ​​structure (5011) snapping into a connector (202).

11. The integrated busbar of claim 10, wherein, The fastener (5) also has a second through groove (502) which is not connected to the first through groove (501), and one of the multiple connecting rows (4) is located in the second through groove (502).

12. The integrated busbar of claim 1, wherein, The multiple battery mounting areas (100) are arranged in a matrix.

13. The integrated busbar of claim 1, wherein, The circuit board (2) is a flexible circuit board.

14. A battery module, characterized by The battery module includes a battery and an integrated busbar as described in any one of claims 1 to 13.

15. A battery pack, characterized by The battery pack includes the battery module as described in claim 14.

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