Battery module and battery pack

Abstract

The invention discloses a battery module and a battery pack, and belongs to the technical field of power batteries, the battery module comprises a first module main body, a second module main body and a sampling lead-out assembly, the first module main body comprises a plurality of first single batteries, and the plurality of first single batteries are arranged at intervals along a first direction; the second module main body comprises a plurality of second single batteries, the second single batteries are arranged at intervals in the first direction, and the second single batteries and the first single batteries are arranged in the second direction; the first single battery comprises a first pole, the second single battery comprises a second pole, and the first pole and the second pole are connected in series to form a series connection point; the sampling lead-out assembly is arranged in a gap between the first single battery and the second single battery and is connected with the series connection point; the battery cell structure is not innovated, laser welding is carried out through the sampling lead-out assembly, additional special equipment does not need to be added, the scheme is simple, and the installation process is simple.

Description

Technical Field

[0001] This application belongs to the technical field of power batteries, and particularly relates to a battery module and a battery pack. Background Art

[0002] Currently, for short-knife electric cores with pole columns on both sides (within 600 mm), when arranging them in a battery pack, a layout of at least two columns is mostly adopted. Based on design requirements such as safety and structure, a gap of more than 30 mm needs to be reserved between the two columns of electric cores, and each column of electric cores requires 2 sampling CCSs (Centralized Connection System, integrated busbars). The gap of more than 30 mm between the electric cores may cause the volume of the battery pack to increase, which may limit the integration performance and adaptability of the battery pack, especially in applications with limited space. Summary of the Invention

[0003] In view of this, this application discloses a battery module, aiming to overcome the problem that the large gap between current electric cores causes the volume of the battery pack to increase; another object of the embodiments of this application is to provide a battery pack.

[0004] An embodiment of this application provides a battery module, which has a first direction and a second direction intersecting with each other. The battery module includes:

[0005] A first module main body, including a plurality of first single cells, and the plurality of first single cells are arranged at intervals along the first direction;

[0006] A second module main body, including a plurality of second single cells, and the plurality of second single cells are arranged at intervals along the first direction, and the second single cells are arranged along the second direction with respect to the first single cells;

[0007] The first single cell includes a first pole column, the second single cell includes a second pole column, and the first pole column and the second pole column are connected in series to form a series connection point;

[0008] A sampling lead-out component, arranged in the gap between the first single cell and the second single cell, and connected to the series connection point.

[0009] In some embodiments, the battery module further includes a first sampling PCB board, the first sampling PCB board covers the gap between the first module main body and the second module main body, the first sampling PCB board is respectively connected to the first module main body and the second module main body, and the first sampling PCB board is connected to the sampling lead-out component.

[0010] In some embodiments, the first sampling PCB board includes:

[0011] The first plate body is covered at the gap between the first module body and the second module body, and is respectively connected to the first module body and the second module body;

[0012] A plurality of conductive inserts are arranged at intervals on one side of the first plate body facing the sampling lead-out component, and each conductive insert is connected to one sampling lead-out component.

[0013] In some embodiments, the sampling lead-out component includes:

[0014] An insulating protective shell, one end of which is connected to the series connection point, and the insulating protective shell has a receiving groove;

[0015] A conductive spring piece is arranged at the receiving groove, and one end of the conductive spring piece extends out of the receiving groove and is connected to the series connection point, and the other end of the conductive spring piece is connected to the insulating protective shell.

[0016] In some embodiments, the insulating protective shell includes:

[0017] A first insulating plate is arranged at the gap between the first single battery and the second single battery and abuts against the first single battery;

[0018] A second insulating plate is arranged opposite to the first insulating plate to form the receiving groove and abuts against the second single battery;

[0019] An insulating support part is arranged on one side of the first insulating plate and the second insulating plate facing the series connection point and is respectively connected to the first insulating plate and the second insulating plate, and the insulating support part is arranged around the series connection point; the insulating support part has a first opening, and the receiving groove communicates with the first opening.

[0020] In some embodiments, the conductive spring piece includes:

[0021] A bottom plate extends out of the receiving groove and contacts the series connection point;

[0022] A first spring piece is arranged on one side in the length direction of the bottom plate and is connected to the bottom plate, and the first spring piece is connected to the first insulating plate;

[0023] A second spring piece is arranged on the other side in the length direction of the bottom plate, and the second spring piece is connected to the second insulating plate; the second spring piece and the first spring piece are bent towards each other to form a clamping part, and the clamping part clamps the first sampling PCB board;

[0024] A first connecting part is arranged on one side in the width direction of the bottom plate and is connected to the bottom plate, and the first connecting part is connected to the series connection point;

[0025] The second connection portion is disposed on the other side of the bottom plate in the width direction and is connected to the bottom plate, and the first connection portion is connected to the series connection point.

[0026] In some embodiments, the first spring sheet includes a first extension portion and a first bent portion, the first extension portion is disposed on one side of the bottom plate in the length direction and connected to the bottom plate; the first bent portion is connected to a side of the first extension portion away from the bottom plate, and the first bent portion is bent in a direction away from the first insulating plate;

[0027] The second spring piece includes a second extension portion and a second bent portion. The second extension portion is arranged on the other side of the bottom plate in the length direction and connected to the bottom plate. The second bent portion is connected to the side of the second extension portion away from the bottom plate, and the second bent portion is bent away from the second insulating plate to form the clamping portion with the bent portion of the first spring piece, and the clamping portion clamps the first sampling PCB board.

[0028] In some embodiments, the battery module further has a third direction intersecting the first direction and the second direction;

[0029] The battery module also includes a first explosion-proof valve and a second explosion-proof valve. The first explosion-proof valve is arranged on the first single cell and is located on any side wall of the first single cell in the third direction. The second explosion-proof valve is arranged on the second single cell and is located on any side wall of the second single cell in the third direction.

[0030] An embodiment of the present application also discloses a battery pack, comprising the battery module as described in the above embodiment.

[0031] The embodiments of the present application also disclose an electrical device, including the battery module as described in the above embodiments, or including the battery pack as described in the above embodiments.

[0032] The embodiments of the present application have one of the following beneficial effects:

[0033] A battery module according to an embodiment of the present application includes a first module body, a second module body, and a sampling lead-out component. The first module body includes a plurality of first single cells, and the plurality of first single cells are arranged at intervals in a first direction; the second module body includes a plurality of second single cells, and the plurality of second single cells are arranged at intervals in the first direction, and the second single cells and the first single cells are arranged in a second direction; the first single cell includes a first pole column, the second single cell includes a second pole column, and the first pole column and the second pole column are connected in series to form a series connection point; the sampling lead-out component is disposed in the gap between the first single cell and the second single cell and is connected to the series connection point; the present application does not innovate on the cell structure. Laser welding is performed through the sampling lead-out component, without the need to add additional dedicated equipment. The solution is simple, the installation process is simple, it can absorb the expansion of the cells and the stacking tolerance of the cells. In the height direction, it can absorb the tolerance of the inconsistent horizontal height of the module. The cost is low, and the connection reliability of the sampling points is high; the sampling lead-out component enables the implementation of the cell series connection solution, the solution has good compatibility, improves the space utilization rate of the whole package, and reduces the acquisition cost.

[0034] The battery pack according to an embodiment of the present application includes the battery module as described in the above embodiment. Therefore, it can have all the technical features and technical effects of the above battery module, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0036] Figure 1 It is a schematic diagram of the overall structure of the battery module provided by the embodiment of the present application;

[0037] Figure 2 It is a schematic sectional structure diagram of the battery module provided by the embodiment of the present application;

[0038] Figure 3 It is a schematic diagram of the installation position of the first sampling PCB provided by the embodiment of the present application;

[0039] Figure 4 It is a schematic diagram of the overall structure of the first sampling PCB provided by the embodiment of the present application;

[0040] Figure 5 It is a schematic diagram of the overall structure of the sampling lead-out component provided by the embodiment of the present application;

[0041] Figure 6 It is a side view of the sampling lead-out component provided by the embodiment of the present application;

[0042] Figure 7 A schematic diagram of the overall structure of the insulating protective shell provided in an embodiment of the present application;

[0043] Figure 8 A bottom view of the sampling lead-out assembly provided in an embodiment of the present application;

[0044] Figure 9 A side view of a conductive reed provided in an embodiment of the present application;

[0045] Figure 10 A schematic diagram of the overall structure of the conductive spring provided in an embodiment of the present application;

[0046] Figure 11 A schematic diagram of the location of each explosion-proof valve provided in the embodiment of the present application;

[0047] Figure 12 This is a schematic diagram of the position setting of the second sampling PCB provided in an embodiment of the present application.

[0048] Description of reference numerals:

[0049] X-first direction; Y-second direction; Z-third direction;

[0050] 10-first module body; 11-first single battery; 111-first pole;

[0051] 20 - second module body; 21 - second single battery; 211 - second pole;

[0052] 30-series connection point;

[0053] 40-first sampling PCB board; 41-first board body; 42-conductive plug;

[0054] 50-sampling lead assembly; 51-insulating protective shell; 511-accommodating groove; 512-first insulating plate; 513-second insulating plate; 514-insulating support portion; 5141-first opening; 515-embedded groove; 52-conductive spring; 521-bottom plate; 522-first spring; 5221-first extension portion; 5222-first bending portion; 523-second spring; 5231-second extension portion; 5232-second bending portion; 524-clamping portion; 525-first connecting portion; 526-second connecting portion; 527-embedded portion;

[0055] 60-first explosion-proof valve;

[0056] 70- second explosion-proof valve;

[0057] 80 - second sampling PCB board; 81 - second board body; 82 - communication interface. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0059] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are an "or" relationship. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0060] Those skilled in the art will appreciate that the drawings are only schematic diagrams of example embodiments and may not be to scale. The modules or processes in the drawings are not necessarily required to implement the present application and therefore cannot be used to limit the scope of protection of the present application.

[0061] At present, for short-blade cells with poles on both sides (within 600mm), when arranged in the battery pack, a layout of at least two columns is mostly adopted. Based on safety, structural and other design requirements, a gap of more than 30mm needs to be reserved between the two columns of cells, and each column of cells requires two sampling CCS (Centralized Connection System, integrated busbar). A gap of more than 30mm between cells may cause the volume of the battery pack to increase, which may limit the integration performance and adaptability of the battery pack, especially in applications with limited space. The gap between the two columns of cells may cause the structure of the battery pack to be not compact enough, which may increase the weight and volume of the battery pack and may reduce the energy density of the battery pack. The need for two sampling CCS for each column of cells may increase the complexity and cost of the battery pack, which may require more electrical connections and management systems, increasing the manufacturing and maintenance costs of the battery pack. The two-column layout of cells may cause thermal management problems in the battery pack. Due to the gap between the cells, the heat may not be effectively conducted and dissipated, which may cause the temperature of the battery pack to rise, thereby affecting the life and performance of the battery.

[0062] That is, the existing conventional solutions have low space utilization and high sampling costs, and there is high voltage between the aluminum bars in the opposing areas between the two columns of modules, which can easily cause the risk of short circuit arcing; the direct welding series design of the battery cells makes it difficult to draw out the voltage and temperature information of the middle series connection point; if the solution of transmitting the middle point voltage signal from the shell to the negative side of the battery cell is adopted, the battery cell needs to be redesigned, and the collection of the middle point temperature information needs to be designed separately, the solution is complex and the cost is high.

[0063] In view of this, an embodiment of the present application provides a single cell battery, aiming to solve at least part of the above technical problems.

[0064] The present application embodiment provides a battery module, see Figure 1 and Figure 2 , Figure 1 The overall structural diagram of the battery module provided in the embodiment of the present application is as follows: Figure 2A schematic diagram of a cross-sectional structure of a battery module provided in an embodiment of the present application. The battery module has a first direction X, a second direction Y and a third direction Z intersecting each other, wherein: the battery module includes a first module body 10, a second module body 20 and a sampling lead-out assembly 50, the first module body 10 includes a plurality of first single cells 11, and the plurality of first single cells 11 are arranged at intervals along the first direction X; the second module body 20 includes a plurality of second single cells 21, and the plurality of second single cells 21 are arranged at intervals along the first direction X, and the second single cells 21 and the first single cells 11 are arranged along the second direction Y; the first single cell 11 includes a first pole 111, and the first pole 111 is arranged on a side of the first single cell 11 facing the second single cell 21 in the second direction Y, and the second single cell 21 includes a second pole 211, and the second pole 211 is arranged on a side of the second single cell 21 facing the first single cell 11 in the second direction Y, and the first pole 111 and the second pole 211 are connected in series to form a series connection point 30. The sampling lead-out component 50 is disposed in the gap between the first single battery 11 and the second single battery 21 , and is connected to the series connection point 30 .

[0065] It should be noted that in the drawings of the embodiments of the present application, the arrow marked with X represents the first direction X, the arrow marked with Y represents the second direction Y, and the arrow marked with Z represents the third direction Z. The description of the present application introduces the first direction X, the second direction Y and the third direction Z in order to more clearly describe the structure and relative position relationship of each component in the battery module. In practical applications, the first direction X, the second direction Y and the third direction Z can point to any orientation in space. In some embodiments, in the battery module, the first direction X corresponds to the thickness direction of the battery module, the second direction Y and the third direction Z intersect, and the second direction Y is the length direction of the battery module, and the third direction Z is the width direction of the battery module. Optionally, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0066] It should be noted that the battery module in this embodiment is a battery module in which the positive and negative electrodes of the dual-cells are stacked in series. The first pole 111 and the second pole 211 have different polarities, that is, when the first pole 111 is a negative pole, the second pole 211 is a positive pole; when the first pole 111 is a positive pole, the second pole 211 is a negative pole.

[0067] Specifically, the first module body 10 and the second module body 20 are respectively composed of a plurality of single cells, which are arranged at intervals along the first direction X. Through this arrangement, the space can be effectively utilized and the volume of the battery pack can be reduced to a certain extent. The first single cell 11 and the second single cell 21 are the basic components of the battery module. Their arrangement (arranged at intervals along the first direction X) helps to optimize the space utilization of the battery module. The first pole 111 and the second pole 211 are respectively arranged on the opposite sides of the first single cell 11 and the second single cell 21 (along the second direction Y). This design allows the poles to be directly opposite, thereby simplifying the electrical connection and reducing the complexity and cost of the battery pack. The series connection point 30 is the connection point of the first pole 111 and the second pole 211. Through this series connection method, the battery can be effectively connected into a whole, thereby improving the voltage output of the battery module. The sampling lead-out component 50 is arranged in the gap between the first single cell 11 and the second single cell 21 and is connected to the series connection point 30. Its main function is to collect the voltage and temperature information of the battery module. This design avoids the need to redesign the battery cell and simplifies the process of collecting intermediate point temperature information, thereby reducing design complexity and cost. Through this design, the battery module is optimized in terms of space utilization, cost control and thermal management, solving many problems existing in traditional designs.

[0068] In view of this, the present embodiment does not innovate the cell structure, and laser welding can be performed through the sampling lead-out assembly 50, without adding additional special equipment, and the scheme is simple and the installation process is simple. This design can absorb the cell expansion and cell stacking tolerance, and the cost is low. At the same time, the connection reliability of the sampling point (series point 30) is high. The application of the sampling lead-out assembly 50 enables the cell series connection scheme to be implemented, and the scheme has good compatibility, improves the space utilization of the entire package, and reduces the collection cost.

[0069] In some embodiments, see Figure 1 and Figure 3 , Figure 3 The schematic diagram of the installation position of the first sampling PCB board provided in the embodiment of the present application. The battery module also includes a first sampling PCB board 40, which is covered in the gap between the first module body 10 and the second module body 20, and the first sampling PCB board 40 is respectively connected to the first module body 10, the second module body 20, and the sampling lead-out component 50.

[0070] Specifically, the first sampling PCB board 40 is a key component responsible for obtaining important parameters such as voltage and temperature from the battery module. It is located in the gap between the first module body 10 and the second module body 20, and plays the role of bridging and signal acquisition. The first sampling PCB board 40 transmits the collected data to the battery management system (BMS) to monitor the health status and performance of the battery in real time. The first module body 10 is a part of the battery module and includes a number of battery cells. Its main function is to provide electrical energy and transmit voltage and temperature information through the first sampling PCB board 40 for status monitoring. The second module body 20 is similar to the first module body 10 and is also a part of the battery module and includes a number of battery cells. It is also responsible for providing electrical energy and transmitting its voltage and temperature information through the first sampling PCB board 40 to ensure that the status of the entire battery module is effectively monitored. The sampling lead-out component 50 is responsible for transmitting the signal collected by the first sampling PCB board 40 to the battery management system (BMS). It ensures that the collected voltage, temperature and other data can be effectively processed and analyzed for real-time monitoring and management of the battery status. Through the coordinated work of these structures, the battery module can achieve efficient energy management and status monitoring to ensure its safety and optimized performance.

[0071] In some embodiments, see Figure 4 , Figure 4 The overall structural diagram of the first sampling PCB board provided in the embodiment of the present application. The first sampling PCB board 40 includes a first board body 41 and a plurality of conductive plugs 42, wherein: the first board body 41 is covered at the gap between the first module body 10 and the second module body 20, and is respectively connected to the first module body 10 and the second module body 20; the plurality of conductive plugs 42 are arranged at intervals on one side of the first board body 41 facing the sampling lead-out component 50, and each conductive plug 42 is connected to a sampling lead-out component 50.

[0072] Specifically, the first board body 41 is the main structural part of the first sampling PCB board 40, and is located in the gap between the first module body 10 and the second module body 20. The first board body 41 provides a stable platform for installing and supporting other components, and is connected to the first module body 10 and the second module body 20 through physical connection, ensuring that electrical signals can be effectively transmitted between the battery module and the first sampling PCB board 40. The conductive plug 42 is a conductive element, which is arranged on the first board body 41 at intervals, facing one side of the sampling lead-out component 50. The main function of the conductive plug 42 is to transmit the voltage and temperature signals in the battery module to the sampling lead-out component 50. Each conductive plug 42 is connected to a sampling lead-out component 50 to ensure that the signal can be accurately collected and transmitted. Through the coordinated work of the first board body 41 and the conductive plug 42, the first sampling PCB board 40 can effectively collect voltage and temperature data from the battery module and transmit these data to the sampling lead-out component 50. This design ensures the stability and accuracy of the signal and provides reliable data support for the battery management system.

[0073] In some embodiments, see Figure 5 and Figure 6 , Figure 5 The overall structural diagram of the sampling and extraction component provided in the embodiment of the present application is as follows: Figure 6 A side view of a conductive spring provided in an embodiment of the present application. The sampling lead-out assembly 50 includes an insulating protective shell 51 and a conductive spring 52, one end of the insulating protective shell 51 is connected to the series connection point 30, and the insulating protective shell 51 has a receiving groove 511. The conductive spring 52 is disposed at the receiving groove 511, and one end of the conductive spring 52 extends out of the receiving groove 511 and is connected to the series connection point 30, and the other end of the conductive spring 52 is connected to the insulating protective shell 51.

[0074] Specifically, the insulating protective shell 51 is used to protect the internal conductive elements (i.e., the conductive spring 52), prevent the external environment from causing damage to the conductive spring 52, and provide electrical insulation to prevent short circuits. One end of the insulating protective shell 51 is connected to the series connection point 30 to ensure that the electrical signal can be transmitted from the battery module to the sampling lead-out component 50. A receiving groove 511 is provided in the insulating protective shell 51 for fixing and supporting the conductive spring 52. The conductive spring 52 is arranged in the receiving groove 511, and one end thereof extends out of the receiving groove 511 and is connected to the series connection point 30 to ensure the effective transmission of the electrical signal. The other end of the conductive spring 52 is connected to the insulating protective shell 51 to provide stable mechanical support and electrical connection. Through the synergistic effect of these structures, the sampling lead-out component 50 can effectively collect electrical signals from the battery module and transmit them to the first sampling PCB board 40 to ensure the integrity and reliability of the signal.

[0075] In some embodiments, see Figure 7 ,Figure 7 Schematic diagram of the overall structure of the insulating protective shell provided in the embodiment of the present application. The insulating protective shell 51 includes a first insulating plate 512, a second insulating plate 513 and an insulating support portion 514, wherein: the first insulating plate 512 is arranged in the gap between the first single cell 11 and the second single cell 21, and abuts against the first single cell 11; the second insulating plate 513 is arranged opposite to the first insulating plate 512 to form a receiving groove 511, and abuts against the second single cell 21. The insulating support portion 514 is arranged on the side of the first insulating plate 512 and the second insulating plate 513 facing the series connection point 30, and is respectively connected to the first insulating plate 512 and the second insulating plate 513, and the insulating support portion 514 is arranged around the series connection point 30; the insulating support portion 514 has a first opening 5141, and the receiving groove 511 is connected to the first opening 5141.

[0076] Specifically, the first insulating plate 512 is arranged in the gap between the first single cell 11 and the second single cell 21, and abuts against the first single cell 11, and its function is to provide electrical insulation to prevent electrical interference and short circuit between the cells. The second insulating plate 513 is arranged opposite to the first insulating plate 512 to form a receiving groove 511, and abuts against the second single cell 21 to ensure electrical isolation from the second single cell 21. The receiving groove 511 is used to accommodate and fix the conductive spring 52 to ensure that it maintains a stable position during operation. The insulating support portion 514 is arranged on the side of the first insulating plate 512 and the second insulating plate 513 facing the series connection point 30, and is respectively connected to the first insulating plate 512 and the second insulating plate 513 to provide additional mechanical support and electrical isolation. The insulating support portion 514 is arranged around the series connection point 30 to ensure the safety and stability of the series connection point 30. The first opening 5141 allows the receiving groove 511 to communicate with the outside, allowing one end of the conductive spring 52 to extend out of the receiving groove 511 and connect to the series connection point 30. Through the synergistic effect of these structures, the insulating protective shell 51 not only protects the conductive spring 52 from the influence of the external environment, but also ensures the safety and reliability of the electrical connection.

[0077] In some embodiments, see Figure 8 and Figure 9 , Figure 8 A bottom view of the sampling lead-out assembly provided in an embodiment of the present application, Figure 9A side view of a conductive spring provided in an embodiment of the present application. The conductive spring 52 includes a bottom plate 521, a first spring 522, and a second spring 523, wherein: the bottom plate 521 extends out of the receiving groove 511 and contacts the series point 30. The first spring 522 is arranged on the side of the bottom plate 521 away from the series point 30, connected to the bottom plate 521, and the first spring 522 is connected to the first insulating plate 512. The second spring 523 is arranged opposite to the first spring 522 and connected to the bottom plate 521, and the second spring 523 is connected to the second insulating plate 513; part of the second spring 523 and part of the first spring 522 are pressed against each other to form a clamping portion 524, and the clamping portion 524 clamps the conductive plug 42 to achieve the connection between the conductive spring 52 and the first sampling PCB board 40.

[0078] Specifically, the bottom plate 521 extends out of the receiving groove 511 and contacts the serial connection point 30, and its main function is to provide a stable electrical connection to ensure that the electrical signal can be transmitted from the battery module to the sampling lead-out assembly 50. The first spring 522 is arranged on the side of the bottom plate 521 away from the serial connection point 30, and is connected to the bottom plate 521 and the first insulating plate 512, providing mechanical support and electrical insulation to prevent electrical short circuit. The second spring 523 is arranged opposite to the first spring 522, and is connected to the bottom plate 521 and the second insulating plate 513, further enhancing mechanical stability and electrical isolation. Part of the second spring 523 and part of the first spring 522 are squeezed against each other to form a clamping portion 524. The function of the clamping portion 524 is to clamp the conductive plug 42 to ensure that it maintains a stable position during operation, prevent loosening or falling off, and realize the connection between the conductive spring 52 and the first sampling PCB board 40. Through the synergistic effect of these structures, the conductive reed 52 can not only effectively transmit electrical signals, but also provide necessary mechanical support and electrical insulation to ensure the safety and reliability of the entire system.

[0079] In some embodiments, Figure 8 and Figure 9 As shown, in this embodiment, along the length direction of the bottom plate 521, the protruding parts on both sides thereof respectively form a first connection part 525 and a second connection part 526, and the first connection part 525 and the second connection part 526 are both connected to the series point 30. Specifically, the first connection part 525 and the second connection part 526 are both connected to the series point 30, providing a multi-point contact electrical connection method. This design increases the contact area between the conductive spring 52 and the series point 30, thereby reducing the contact resistance and improving the efficiency and stability of current transmission. In addition, the multi-point connection also enhances the mechanical stability and reduces the risk of loose or disconnected connection due to vibration or other external forces. Through the synergistic effect of these structures, the reliability and durability of the electrical connection are ensured, and it adapts to complex working environments.

[0080] In some embodiments, see Figure 10, Figure 10 Schematic diagram of the overall structure of the conductive spring 52 provided in the embodiment of the present application. The first spring 522 includes a first extension portion 5221 and a first bent portion 5222 connected to each other, and the first extension portion 5221 is connected to the bottom plate 521 on the side away from the first bent portion 5222. The first bent portion 5222 is partially bent away from the first insulating plate 512. The second spring 523 includes a second extension portion 5231 and a second bent portion 5232 connected to each other, and the first extension portion 5221 is connected to the bottom plate 521 on the side away from the first bent portion 5222; the first bent portion 5222 is partially bent away from the first insulating plate 512. The second spring piece 523 includes a second extension portion 5231 and a second bent portion 5232 connected to each other. The second extension portion 5231 is connected to the bottom plate 521 on the side away from the second extension portion 5231. The second bent portion 5232 is bent away from the second insulating plate 513. The bent portion of the second bent portion 5232 and the bent portion of the first spring piece 522 are squeezed against each other to form a clamping portion 524, which clamps the conductive plug 42.

[0081] Specifically, the first spring 522 includes a first extension 5221 and a first bend 5222. One side of the first extension 5221 is connected to the bottom plate 521, providing mechanical and electrical connections with the bottom plate 521. The first bend 5222 bends in a direction away from the first insulating plate 512 to form an elastic structure that can absorb mechanical stress and provide a certain elasticity to adapt to the slight displacement or vibration of the component. The second spring 523 also includes a second extension 5231 and a second bend 5232. One side of the second extension 5231 is connected to the bottom plate 521 to ensure a stable connection with the bottom plate 521. The second bend 5232 bends in a direction away from the second insulating plate 513 and is arranged opposite to the bend of the first spring 522. The bends of the two are pressed against each other to form a clamping portion 524. This structure is used to clamp the conductive plug 42 to ensure that it maintains a stable position during operation and to achieve the connection between the conductive spring 52 and the first sampling PCB board 40. Through this design, the clamping portion 524 not only provides a stable fixation for the conductive plug 42, but also utilizes the elastic characteristics of the spring to allow a certain displacement and vibration absorption, prevents the component from loosening or falling off, and facilitates the conductive spring 52 to effectively transmit electrical signals to the first sampling PCB board 40. This structural design improves the reliability and durability of the system and adapts to complex working environments.

[0082] In some embodiments, Figure 7 and Figure 10As shown, the insulating protective shell 51 also has an embedding groove 515, which is provided on the first insulating plate 512 and the second insulating plate 513. The embedding groove 515 on the first insulating plate 512 is located on the side of the first insulating plate 512 facing the second insulating plate 513, and the embedding groove 515 on the second insulating plate 513 is located on the side of the second insulating plate 513 facing the first insulating plate 512. The conductive spring piece 52 also includes an embedding portion 527, which is disposed on the side of the first bending portion 5222 away from the first extension portion 5221 and connected to the first bending portion 5222; the embedding portion 527 is also disposed on the side of the second bending portion 5232 away from the second extension portion 5231 and connected to the second bending portion 5232. The embedding portion 527 can be partially embedded in the embedding groove 515.

[0083] Specifically, the embedding groove 515 is respectively provided on the first insulating plate 512 and the second insulating plate 513, wherein the embedding groove 515 on the first insulating plate 512 is located on the side thereof facing the second insulating plate 513, and the embedding groove 515 on the second insulating plate 513 is located on the side thereof facing the first insulating plate 512. The embedding portion 527 of the conductive spring piece 52 is provided on the side of the first bending portion 5222 away from the first extension portion 5221, and is connected to the first bending portion 5222; similarly, the embedding portion 527 is also provided on the side of the second bending portion 5232 away from the second extension portion 5231, and is connected to the second bending portion 5232. The embedding portion 527 can be partially embedded in the embedding groove 515. It can be understood that the cooperation between the embedding portion 527 and the embedding groove 515 ensures that the conductive spring piece 52 is firmly positioned in the insulating protective shell 51, and prevents it from being displaced due to vibration or other external forces during use. Secondly, this embedded design increases the mechanical connection strength between the conductive spring 52 and the insulating protective shell 51, and improves the durability and reliability of the overall structure. In addition, the presence of the embedded groove 515 can also protect the conductive spring 52 from the influence of the external environment, such as dust and moisture, to a certain extent, thereby extending its service life. Through the reasonable configuration of these structures, the stability and safety of the entire electrical connection system are significantly improved.

[0084] In some embodiments, see Figure 11 , Figure 11 Schematic diagram of the location of each explosion-proof valve provided in the embodiment of the present application. The battery module also includes a first explosion-proof valve 60 and a second explosion-proof valve 70. The first explosion-proof valve 60 is arranged on the first single battery 11 and is located on any side wall of the first single battery 11 in the third direction Z; the second explosion-proof valve 70 is arranged on the second single battery 21 and is located on any side wall of the second single battery 21 in the third direction Z.

[0085] It should be noted that the first explosion-proof valve 60 is arranged on the first single battery 11, and is located on any side wall thereof in the third direction Z; the second explosion-proof valve 70 is arranged on the second single battery 21, and is also located on any side wall thereof in the third direction Z. The main function of these explosion-proof valves is to provide safety protection. Specifically, when the internal pressure of the battery rises abnormally due to overcharging, overheating or other fault conditions, the explosion-proof valve can automatically open when the set pressure threshold is reached to release the internal pressure, thereby preventing the battery housing from rupturing or exploding. This design not only protects the battery itself, but also reduces potential hazards to surrounding equipment and personnel. In addition, the explosion-proof valve is located on the side wall in the Z direction to ensure that it can play an effective role in different installation and use environments and provide all-round safety protection. Through the reasonable configuration of these structures, the safety and reliability of the battery module have been significantly improved.

[0086] In some embodiments, see Figure 12 , Figure 12 The schematic diagram of the position setting of the second sampling PCB provided in the embodiment of the present application. The second sampling PCB 80 is used to replace the first sampling PCB 40 in the above embodiment. Specifically, the second sampling PCB 80 is clamped between the plurality of first single cells 11 and the plurality of second single cells 21. The second sampling PCB 80 includes a second board body 81 and a communication interface 82. The second board body 81 is clamped in the clamping portion 524 to achieve the connection between the second sampling PCB 80 and the conductive reed 52, so that the conductive reed 52 can effectively transmit the electrical signal to the second sampling PCB 80. The communication interface 82 is arranged at either end of the second board body 81. The main function of the communication interface 82 is to collect data such as battery voltage and temperature, and transmit this information to the battery management system (BMS) for real-time monitoring. At the same time, the communication interface 82 connects the battery module and other system components to ensure the coordinated operation of the overall system, supports multiple communication protocols (such as I2C, SPI, etc.) to adapt to different devices and application scenarios, provides error detection and correction functions for data transmission to improve the reliability of the system, ensures the integrity and security of the signal during data transmission to prevent interference and short circuit, and supports the expansion of system functions and the addition of modules to facilitate maintenance and upgrades. Through these functions, the communication interface 82 plays a key role in the battery module to ensure efficient, safe and reliable operation of the system.

[0087] The present application also discloses a battery pack, including the battery module of the above embodiment, so that it can have all the technical features and technical effects of the above single battery, which will not be described in detail here.

[0088] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0089] The battery module and battery pack provided in the embodiments of the present application are introduced in detail above, and the principles and implementation methods of the present application are explained by using specific examples. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application; ordinary technicians in this field should understand that: they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery module, characterized in that: The battery module has a first direction and a second direction intersecting each other, and the battery module includes: A first module body includes a plurality of first single cells, wherein the plurality of first single cells are arranged at intervals along the first direction; A second module body includes a plurality of second single cells, wherein the plurality of second single cells are arranged at intervals along the first direction, and the second single cells and the first single cells are arranged along the second direction; The first single cell includes a first pole, the second single cell includes a second pole, and the first pole and the second pole are connected in series to form a series connection point; The sampling lead-out component is disposed in the gap between the first single battery and the second single battery and is connected to the series connection point.

2. The battery module according to claim 1, characterized in that: The battery module further includes a first sampling PCB board, which is covered at a gap between the first module body and the second module body, and is respectively connected to the first module body, the second module body, and the sampling lead-out component.

3. The battery module according to claim 2, characterized in that: The first sampling PCB board comprises: A first plate body is disposed to cover the gap between the first module body and the second module body, and is connected to the first module body and the second module body respectively; A plurality of conductive plugs are arranged at intervals on a side of the first plate body facing the sampling lead-out component, and each of the conductive plugs is connected to one of the sampling lead-out components.

4. The battery module according to claim 2 or 3, characterized in that: The sampling and extraction component comprises: An insulating protective shell, one end of which is connected to the series connection point, and the insulating protective shell has a receiving groove; A conductive spring is arranged at the receiving groove, and one end of the conductive spring extends out of the receiving groove and is connected to the series connection point, and the other end of the conductive spring is connected to the insulating protective shell.

5. The battery module according to claim 4, characterized in that: The insulating protective shell comprises: A first insulating plate is disposed in a gap between the first single cell and the second single cell and is in contact with the first single cell; a second insulating plate, arranged opposite to the first insulating plate to form the receiving groove and abutting against the second single battery; An insulating support portion is arranged on the side of the first insulating plate and the second insulating plate facing the series connection point, and is respectively connected to the first insulating plate and the second insulating plate. The insulating support portion is arranged around the series connection point; the insulating support portion has a first opening, and the accommodating groove is connected to the first opening.

6. The battery module according to claim 5, characterized in that: The conductive reed comprises: A bottom plate extending out of the receiving groove and contacting the serial connection point; A first spring sheet, arranged on a side of the bottom plate away from the series connection point and connected to the bottom plate, and the first spring sheet is connected to the first insulating plate; The second reed is arranged opposite to the first reed and connected to the bottom plate, and the second reed is connected to the second insulating plate; part of the second reed and part of the first reed are pressed against each other to form a clamping portion, and the clamping portion clamps the first sampling PCB board.

7. The battery module according to claim 6, characterized in that: Along the length direction of the bottom plate, protruding parts are respectively formed on both sides thereof to form a first connecting portion and a second connecting portion, and the first connecting portion and the second connecting portion are both connected to the series connection point.

8. The battery module according to claim 6, characterized in that: The first spring sheet includes a first extension portion and a first bending portion connected to each other, the first extension portion is connected to the bottom plate at a side away from the first bending portion; the first bending portion is bent in a direction away from the first insulating plate; The second spring piece includes a second extension portion and a second bent portion connected to each other, the second extension portion is connected to the bottom plate on a side away from the second extension portion; the second bent portion is bent in a direction away from the second insulating plate; the bent portion of the second bent portion and the bent portion of the first spring piece are pressed against each other to form the clamping portion, and the clamping portion clamps the first sampling PCB board.

9. The battery module according to claim 1, characterized in that: The battery module further has a third direction intersecting the first direction and the second direction; The battery module also includes a first explosion-proof valve and a second explosion-proof valve. The first explosion-proof valve is arranged on the first single cell and is located on any side wall of the first single cell in the third direction. The second explosion-proof valve is arranged on the second single cell and is located on any side wall of the second single cell in the third direction.

10. A battery pack, characterized in that: A battery module comprising any one of claims 1 to 9.

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