Battery module and battery system

Abstract

The invention provides a battery module and a battery system, and relates to the technical field of batteries. The battery module comprises a battery cell; the connecting assembly comprises a conductive part and a flexible circuit board, the flexible circuit board is arranged on the conductive part and located on the side, facing the battery cell, of the conductive part, and the conductive part is arranged on the battery cell; the flexible supporting piece is located between the flexible circuit board and the battery cell in the first direction, and the first direction is the thickness direction of the battery cell. The supporting effect on the flexible circuit board is improved, and the material cost and the manufacturing cost are reduced.

Description

Technical Field

[0001] The present application relates to a battery module and a battery system, and belongs to the field of battery technology. Background Art

[0002] With the development of battery technology, battery modules have been widely used in the fields of electric vehicles and energy storage.

[0003] At present, the integrated cover of the Cell Connection System (CCS) requires a plastic tray bracket to complete the welding and fixation of the aluminum row connecting pieces and the support and fixation of the Flexible Printed Circuit (FPC). Generally, the plastic tray bracket wraps the aluminum row connecting pieces and the flexible printed circuit board to form a whole, and then is welded to the battery cell.

[0004] However, the plastic pallet bracket needs to be molded, has high development costs, and is not easy to modify and adjust.

[0005] Application Contents

[0006] The present application provides a battery module and a battery system, which not only improve the support effect for the flexible circuit board, but also reduce material costs and manufacturing costs.

[0007] In a first aspect, the present application provides a battery module, comprising:

[0008] Battery cells;

[0009] A connection assembly, the connection assembly includes a conductive member and a flexible circuit board, the flexible circuit board is arranged on the conductive member and is located on a side of the conductive member facing the battery cell, and the conductive member is arranged on the battery cell;

[0010] A flexible support member is located between the flexible circuit board and the battery cell along a first direction, wherein the first direction is a thickness direction of the battery cell.

[0011] The beneficial effects of the present application are: by setting up the flexible support, compared with the existing cancellation of the plastic tray bracket, the material cost and manufacturing cost are reduced, and the flexible support is used to support the flexible circuit board collection part, providing flexible and stable support. The flexible support has good buffering performance and can effectively protect the flexible circuit board from damage by mechanical stress during use. Through a series of structural optimizations and process improvements, not only the manufacturing cost of the module is significantly reduced, but also the performance and reliability of the product are improved, with high application value and market competitiveness.

[0012] Based on the above technical solution, the present application can also be improved as follows.

[0013] In some optional embodiments, the conductive member is welded to the battery cell.

[0014] In some optional embodiments, the flexible support member is foam;

[0015] There is a gap between the flexible circuit board and the battery cell, and the flexible support member is filled into the gap.

[0016] In some optional embodiments, the connection assembly further includes a base, which is disposed at an end of the battery cell, and along the first direction, an orthographic projection of the base on the surface of the battery cell is located inside the battery cell;

[0017] At least a portion of the flexible circuit board is disposed on the base.

[0018] In some optional embodiments, the base has a connecting column, the flexible circuit board has a connecting portion, a connecting hole is formed on the connecting portion, and the connecting column passes through the connecting hole, so that the flexible circuit board is connected to the base.

[0019] In some optional embodiments, the flexible support member is provided with at least one avoidance opening, and the at least one avoidance opening is arranged on the flexible support member at intervals along the extension direction of the flexible support member;

[0020] The battery cell has at least one explosion-proof valve, which passes through the avoidance opening.

[0021] In some optional embodiments, the battery cell has a pole, and the base is arranged on the battery cell through the pole.

[0022] In some optional embodiments, the conductive member is an aluminum bar connecting piece, and / or,

[0023] The base is made of plastic.

[0024] In some optional embodiments, the battery module further includes a partition, which is disposed on the side walls of the battery cell and the connecting assembly.

[0025] In a second aspect, the present application also provides a battery system, including: the above-mentioned battery module, wherein there are multiple battery modules, and two adjacent battery modules are connected to each other.

[0026] In the battery module and battery system provided by the present application, the battery system includes a battery module, there are multiple battery modules, and two adjacent battery modules are connected to each other; wherein the battery module includes: a battery cell; a connecting component, the connecting component includes a conductive member and a flexible circuit board, the flexible circuit board is arranged on the conductive member and is located on the side of the conductive member facing the battery cell, and the conductive member is arranged on the battery cell; a flexible support member, the flexible support member is located between the flexible circuit board and the battery cell along a first direction, wherein the first direction is the thickness direction of the battery cell.

[0027] By setting up the flexible support, compared with the existing plastic tray bracket, the material cost and manufacturing cost are reduced. The flexible support is used to support the flexible circuit board collection part, providing flexible and stable support. The flexible support has good buffering performance and can effectively protect the flexible circuit board from damage by mechanical stress during use. Through a series of structural optimization and process improvements, not only the manufacturing cost of the module is significantly reduced, but also the performance and reliability of the product are improved, with high application value and market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other purposes, features and advantages of the embodiments of the present application will become more easily understood through the following detailed description with reference to the accompanying drawings. In the accompanying drawings, multiple embodiments of the present application will be described in an exemplary and non-limiting manner, wherein:

[0029] Figure 1 A schematic diagram of the structure of a battery module according to an embodiment of the present application;

[0030] Figure 2 An exploded schematic diagram of a battery module according to an embodiment of the present application;

[0031] Figure 3 An assembly diagram of a flexible circuit board, a battery cell, and a base in a battery module according to an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the structure of a base in a battery module according to an embodiment of the present application;

[0033] Figure 5 This is a schematic diagram of the structure of a flexible support member in a battery module according to an embodiment of the present application;

[0034] Figure 6 Schematic diagram of the structure of the partition in the battery module of the embodiment of the present application.

[0035] Reference numerals:

[0036] 100-battery module;

[0037] 110-battery cell; 111-electrode column;

[0038] 120-connection assembly; 121-conductive member; 122-flexible circuit board; 1221-connection part; 123-base; 1231-connection column;

[0039] 130- flexible support member; 131- avoidance opening;

[0040] 140-Partition. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application. All other embodiments obtained are within the scope of protection of the present application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] At present, the integrated cover of the Cell Connection System (CCS) requires a plastic tray bracket to complete the welding and fixing of the aluminum row connection piece and the support and fixing of the flexible printed circuit (FPC). Generally, the plastic tray bracket wraps the aluminum row connection piece and the flexible printed circuit board to form a whole, and then welds it to the battery cell. However, the plastic tray bracket needs to be molded, which has high development costs and is not easy to modify and adjust.

[0046] The battery module and battery system proposed in this application, by setting up a flexible support, reduces material cost and manufacturing cost compared to the existing elimination of plastic tray brackets, and uses a flexible support to support the flexible circuit board collection part, providing flexible and stable support. The flexible support has good buffering performance and can effectively protect the flexible circuit board from damage by mechanical stress during use. Through a series of structural optimizations and process improvements, not only the manufacturing cost of the module is significantly reduced, but also the performance and reliability of the product are improved, with high application value and market competitiveness.

[0047] The battery module and battery system provided by the present application are described in detail below in conjunction with specific embodiments.

[0048] Figure 1 is a schematic diagram of the structure of a battery module according to an embodiment of the present application, Figure 2 This is a schematic diagram of an explosion of a battery module according to an embodiment of the present application.

[0049] refer to Figure 1 and Figure 2 As shown, the embodiment of the present application proposes a battery module 100, including:

[0050] Battery cell 110;

[0051] The battery cell 110 is the core component of the battery module 100 , which directly determines the performance, capacity, life and safety of the battery.

[0052] A connecting component 120, the connecting component 120 includes a conductive member 121 and a flexible circuit board 122, the flexible circuit board 122 is disposed on the conductive member 121 and is located on a side of the conductive member 121 facing the battery cell 110, and the conductive member 121 is disposed on the battery cell 110;

[0053] It should be noted that the conductive member 121 is used to connect the battery cell 110 with an external structure, and the flexible circuit board 122 can realize the electrical connection between the battery cells 110 inside the battery module 100 to ensure the transmission of current and signals. The flexible circuit board 122 can connect the battery module 100 with external devices (such as a controller, a display, etc.) to provide a power and signal transmission channel.

[0054] The flexible support member 130 is located between the flexible circuit board 122 and the battery cell 110 along a first direction, wherein the first direction is a thickness direction of the battery cell 110 .

[0055] It should be noted that the flexible support member 130 is supported between the flexible circuit board 122 and the battery cell 110 , and is mainly used to support the flexible circuit board 122 to prevent the nickel sheet from being creased due to the uneven installation surface of the flexible circuit board 122 .

[0056] For ease of explanation, Figure 2 As shown, wherein X represents the first direction.

[0057] It should be noted that the battery module 100 is a battery device that can integrate multiple battery cells 110. Multiple battery cells 110 connected in series and in parallel can provide greater power, and have the advantages of high integration and high structural stability. In order to enable multiple battery cells 110 to be connected in series and in parallel, the multiple battery cells 110 can be electrically connected through a bus bar.

[0058] Through the above-mentioned setting, that is, through the setting of the flexible support 130, compared with the existing cancellation of the plastic tray bracket, the material cost and manufacturing cost are reduced, and the flexible support 130 is used to support the collection part of the flexible circuit board 122, providing flexible and stable support. The flexible support 130 has good buffering performance and can effectively protect the flexible circuit board 122 from being damaged by mechanical stress during use. Through a series of structural optimizations and process improvements, not only the manufacturing cost of the module is significantly reduced, but also the performance and reliability of the product are improved, with high application value and market competitiveness.

[0059] In some optional embodiments, the conductive member 121 is welded to the battery cell 110 .

[0060] It should be noted that the use of welding fixtures to position the conductive member 121 simplifies the structural design of the entire module. The welding fixtures can improve positioning accuracy, reduce assembly errors, and thus improve product reliability and consistency.

[0061] Specifically, the battery module 100 uses a welding tool to position the aluminum bar connecting piece, thereby achieving welding and fixing of the aluminum bar connecting piece and the pole 111 of the battery cell 110, and the tool is removed after welding is completed.

[0062] The overall process flow has been optimized, reducing assembly steps and time, and improving production efficiency. The use of welding tooling makes the assembly process easier and faster.

[0063] Continue to refer Figure 1 and Figure 2, in some optional embodiments, the flexible support member 130 is foam;

[0064] There is a gap between the flexible circuit board 122 and the battery cell 110 , and the flexible support member 130 fills the gap.

[0065] It should be noted that in order to enable the flexible support member 130 to reduce costs and save installation time while maintaining the supporting effect, the flexible support member 130 can be foam, wherein the foam material has good elasticity and cushioning properties, can effectively absorb and disperse external shocks and vibrations, and protect the battery cells 110 and other components inside the battery to prevent them from mechanical damage during transportation and use.

[0066] Specifically, the foam material has a certain heat insulation performance, which can play a heat insulation role inside the battery, prevent heat conduction between the battery cells 110, and reduce heat accumulation. At the same time, some thermally conductive foam materials can also help dissipate heat and improve the thermal management performance of the battery.

[0067] Foam can be used to fix and support the flexible circuit board 122, ensure its stable position in the battery housing, prevent movement and loosening, and thus improve the structural stability and reliability of the battery. Foam materials can be used to seal and dustproof the battery, prevent external dust and moisture from entering the battery, protect the battery cell 110 and circuit, and extend the battery life. In addition, in terms of weight factors, the foam material is light in weight, and compared with the plastic tray bracket of the existing structure, it can contribute to the lightweight design of the battery without increasing the overall weight of the battery. Since the foam material has a certain amount of variation, it can be used to fill the gap between the flexible circuit board 122 and the battery cell 110, ensure the compactness and integrity of the internal structure of the battery, and prevent relative movement and friction between components.

[0068] In some embodiments, specifically, the flexible support member 130 is elongated, and the flexible support member 130 extends along the length direction of the battery cell 110 .

[0069] Exemplarily, there are multiple battery cells 110, and the multiple battery cells 110 are arranged in parallel, and the flexible support member 130 spans across the multiple battery cells 110, such as Figure 2 As shown, Y represents the length direction of the battery cell 110 .

[0070] In other embodiments, the flexible support member 130 may be an elastic structural member. When the flexible circuit board 122 and the conductive member 121 are installed on the battery cell 110, the flexible support member 130 is installed between the flexible circuit board 122 and the battery cell 110. The flexible support member 130 may have a certain degree of compression deformation. In this way, the elastic force of the flexible support member 130 can make the outer wall of the flexible support member 130 fit tightly between the flexible circuit board 122 and the battery cell 110, thereby ensuring the compactness and integrity of the internal structure of the battery and preventing relative movement and friction between components.

[0071] Continue to refer Figure 1 and Figure 2 In some optional embodiments, the connection assembly 120 further includes a base 123, which is disposed at an end of the battery cell 110, and along the first direction, an orthographic projection of the base 123 on the surface of the battery cell 110 is located inside the battery cell 110;

[0072] At least a portion of the flexible circuit board 122 is disposed on the base 123 .

[0073] It should be noted that in order to better position the conductive member 121 and install it on the battery cell 110, the connection assembly 120 of the present application may also be provided with a base 123, which can be removably installed on the end of the battery cell 110, and the base 123 has a certain width to connect at least part of the flexible circuit board 122.

[0074] Specifically, the base 123 is used to fix the collection terminal of the flexible circuit board 122, thereby ensuring the stability and reliability of the terminal. The base 123 can provide a solid support to prevent the terminal from loosening or falling off during use.

[0075] In addition, it should be noted that the base 123 is only a part of the plastic pallet bracket in the existing structure. Compared with the existing entire plastic pallet bracket, the present application uses the base 123 and the flexible support member 130 as a replacement, and the weight and cost of the entire structure can be effectively reduced.

[0076] Figure 3 This is an assembly diagram of a flexible circuit board, a battery cell, and a base in a battery module of an embodiment of the present application. Figure 4 It is a schematic diagram of the structure of the base in the battery module of an embodiment of the present application.

[0077] like Figure 1 system Figure 4 As shown, in some optional embodiments, the base 123 has a connecting column 1231, the flexible circuit board 122 has a connecting portion 1221, a connecting hole is opened on the connecting portion 1221, and the connecting column 1231 passes through the connecting hole to connect the flexible circuit board 122 to the base 123.

[0078] It should be noted that in order to better install the base 123 and the flexible circuit board 122, the base 123 has a plurality of connecting columns 1231, and the flexible circuit board 122 has a connecting portion 1221, which protrudes from the end of the battery cell 110, wherein the connecting column 1231 passes through the connecting hole to connect the flexible circuit board 122 to the base 123.

[0079] Specifically, the base 123 is fixed on the battery cell 110 through the pole 111 of the battery cell 110 and the conductive member 121 .

[0080] In some embodiments, the base 123 can be made of at least one of polycarbonate and acrylonitrile-butadiene-styrene copolymer, which is a common engineering plastic alloy that combines the advantages of polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS) and has excellent comprehensive performance.

[0081] It should be noted that, in some embodiments, the base 123 and the connecting column 1231 are connected in an integrated manner, and in other embodiments, the base 123 and the connecting column 1231 can also be connected in other manners. As long as the connection method can fix the base 123 and the connecting column 1231, the purpose of this embodiment can be achieved. Here, there is no restriction on the connection method between the base 123 and the connecting column 1231.

[0082] Figure 5 Schematic diagram of the structure of the flexible support member in the battery module of the embodiment of the present application, such as Figure 2 and Figure 5 As shown, in some optional embodiments, the flexible support member 130 is provided with at least one avoidance opening 131, and the at least one avoidance opening 131 is arranged on the flexible support member 130 at intervals along the extension direction of the flexible support member 130;

[0083] The battery cell 110 has at least one explosion-proof valve, which passes through the avoidance opening 131 .

[0084] It should be noted that the avoidance opening 131 is provided for avoiding the explosion-proof valve on the battery cell 110 . In addition, the explosion-proof valve can pass through the avoidance opening 131 , which can further position and fix the flexible support member 130 to prevent it from moving.

[0085] It should be understood that the size and shape of the explosion-proof valve correspond to the size and hole shape of the avoidance port 131, so that when the explosion-proof valve is inserted into the avoidance port 131, the outer wall of the explosion-proof valve can fit tightly with the inner wall of the avoidance port 131, so that the explosion-proof valve can reliably seal the avoidance port 131.

[0086] In some embodiments, the size of the avoidance opening 131 can be set to match the shape and size of the explosion-proof valve, so that the flexible support member 130 can be installed on the battery cell 110 relatively stably and reliably.

[0087] In addition, multiple avoidance openings 131 can be arranged at intervals along the extension direction of the flexible support member 130, so that the multiple avoidance openings 131 can be distributed in an array on the outer wall of the flexible support member 130, thereby increasing the number of avoidance openings 131 opened on the flexible support member 130.

[0088] like Figure 2 and Figure 3 As shown, in some optional embodiments, the battery cell 110 has a pole 111 , and the base 123 is disposed on the battery cell 110 through the pole 111 .

[0089] It should be noted that, in order to position and install the base 123 on the battery cell 110 , the base 123 may be connected to the pole 111 of the battery cell 110 , and then the base 123 may be disposed on the battery cell 110 .

[0090] The pole 111 (also called electrode pole 111 or terminal) of the battery cell 110 is an important part of the battery, responsible for connecting the electrode inside the battery with the external circuit. The pole 111 usually has two types: positive pole 111 and negative pole 111, which are connected to the positive and negative poles of the battery respectively.

[0091] The positive electrode column 111 is usually made of aluminum or nickel because they have good electrical conductivity and corrosion resistance. The negative electrode column 111 is usually made of copper or nickel because they have excellent electrical conductivity.

[0092] In some optional embodiments, the conductive member 121 is an aluminum bar connecting piece, and / or,

[0093] The base 123 is a plastic component.

[0094] It should be noted that the aluminum busbar connecting sheet, also called aluminum busbar or aluminum conductive sheet, plays an important role in the battery module 100 and is mainly used for electrical connection and current conduction between battery modules 100.

[0095] In some embodiments, the conductive member 121 is usually made of high-purity aluminum or aluminum alloy (such as 6061, 6063, etc.) to ensure good conductivity and mechanical strength. In order to improve corrosion resistance and contact performance, the surface of the aluminum row connecting piece is often anodized or nickel-plated.

[0096] Aluminum busbar connectors are usually manufactured through stamping and cutting processes to ensure dimensional accuracy and consistency. The connection method between the aluminum busbar connector and the battery terminal needs to ensure low resistance and high reliability. Common connection methods include ultrasonic welding, laser welding and bolt connection.

[0097] The base 123 is in the form of a plastic part because plastic parts are widely used in various industrial and consumer products. Due to their light weight, easy processing, low cost and diverse material properties, they have become the preferred material for many product designs and manufacturing.

[0098] For example, during injection molding, molten plastic is injected into a plastic product mold under pressure, and the desired plastic part is obtained by cooling and molding. The injection molding process can be completed by a mechanical injection molding machine, and the material of the reinforcing rib and the first support member can include one or more of polyethylene, polypropylene, ABS (a terpolymer of three monomers of acrylonitrile (A), butadiene (B), and styrene (S)), polyamide, and polystyrene.

[0099] Figure 6 Schematic diagram of the structure of the separator in the battery module of the embodiment of the present application, such as Figure 1 , Figure 2 as well as Figure 6 As shown, in some optional embodiments, the battery module 100 further includes a partition 140 , and the partition 140 is disposed on the side walls of the battery cell 110 and the connecting assembly 120 .

[0100] It should be noted that the partition 140 is provided to achieve the effect of insulation and heat isolation.

[0101] In some embodiments, the partition 140 is located on a side close to the base 123 .

[0102] The battery module provided in the embodiment of the present application includes a battery cell; a connecting component, the connecting component includes a conductive member and a flexible circuit board, the flexible circuit board is arranged on the conductive member and is located on the side of the conductive member facing the battery cell, and the conductive member is arranged on the battery cell; a flexible support member, the flexible support member is located between the flexible circuit board and the battery cell along a first direction, wherein the first direction is the thickness direction of the battery cell.

[0103] By setting up the flexible support, compared with the existing plastic tray bracket, the material cost and manufacturing cost are reduced. The flexible support is used to support the flexible circuit board collection part, providing flexible and stable support. The flexible support has good buffering performance and can effectively protect the flexible circuit board from damage by mechanical stress during use. Through a series of structural optimization and process improvements, not only the manufacturing cost of the module is significantly reduced, but also the performance and reliability of the product are improved, with high application value and market competitiveness.

[0104] In addition, an embodiment of the present application further provides a battery system, including: the above-mentioned battery module 100, there are multiple battery modules 100, and two adjacent battery modules 100 are connected to each other.

[0105] It should be noted that multiple battery modules 100 are interconnected and can be combined into a battery module for easy management and installation. Each module usually contains a certain number of battery modules 100 and may be equipped with independent monitoring and management circuits.

[0106] The specific structure, working principle and function of the battery module 100 have been described in detail in the aforementioned embodiment 1, and will not be repeated here.

[0107] The battery system also includes a battery management system (BMS), a cooling system and sensors.

[0108] The BMS is responsible for monitoring and managing the status of the battery cells, including voltage, current, temperature and charge status. It can also balance the charge between battery cells to ensure the safe and efficient operation of the system.

[0109] In order to ensure that the battery operates within the optimal temperature range, the battery system is usually equipped with a cooling system. The cooling system can be air cooling, liquid cooling or other forms.

[0110] Sensors are used to monitor various parameters of the battery system, such as temperature, voltage, current, etc., and provide data to the BMS for analysis and control.

[0111] By setting up the flexible support, compared with the existing plastic tray bracket, the material cost and manufacturing cost are reduced. The flexible support is used to support the flexible circuit board collection part, providing flexible and stable support. The flexible support has good buffering performance and can effectively protect the flexible circuit board from damage by mechanical stress during use. Through a series of structural optimization and process improvements, not only the manufacturing cost of the module is significantly reduced, but also the performance and reliability of the product are improved, with high application value and market competitiveness.

[0112] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0113] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0114] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned implementation modes, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

Claims

1. A battery module (100), characterized in that: include: Battery cell (110); A connection component (120), the connection component (120) comprising a conductive member (121) and a flexible circuit board (122), the flexible circuit board (122) being arranged on the conductive member (121) and located on a side of the conductive member (121) facing the battery cell (110), and the conductive member (121) being arranged on the battery cell (110); A flexible support member (130), wherein the flexible support member (130) is located between the flexible circuit board (122) and the battery cell (110) along a first direction, wherein the first direction is a thickness direction of the battery cell (110).

2. The battery module (100) according to claim 1, characterized in that: The conductive member (121) is welded to the battery core (110).

3. The battery module (100) according to claim 2, characterized in that: The flexible support member (130) is foam; There is a gap between the flexible circuit board (122) and the battery core (110), and the flexible support member (130) is filled into the gap.

4. The battery module (100) according to any one of claims 1 to 3, characterized in that: The connection assembly (120) further comprises a base (123), wherein the base (123) is arranged at an end of the battery cell (110), and along the first direction, an orthographic projection of the base (123) on the surface of the battery cell (110) is located inside the battery cell (110); At least a portion of the flexible circuit board (122) is disposed on the base (123).

5. The battery module (100) according to claim 4, characterized in that: The base (123) has a connecting column (1231), the flexible circuit board (122) has a connecting portion (1221), a connecting hole is provided on the connecting portion (1221), and the connecting column (1231) passes through the connecting hole, so that the flexible circuit board (122) is connected to the base (123).

6. The battery module (100) according to claim 4, characterized in that: The flexible support member (130) is provided with at least one avoidance opening (131), and the at least one avoidance opening (131) is arranged on the flexible support member (130) at intervals along the extension direction of the flexible support member (130); The battery cell (110) has at least one explosion-proof valve, and the explosion-proof valve passes through the avoidance opening (131).

7. The battery module (100) according to claim 4, characterized in that: The battery cell (110) has a pole (111), and the base (123) is arranged on the battery cell (110) via the pole (111).

8. The battery module (100) according to claim 4, characterized in that: The conductive member (121) is an aluminum bar connecting piece, and / or, The base (123) is a plastic part.

9. The battery module (100) according to any one of claims 1 to 3, characterized in that: The battery module (100) further comprises a partition (140), wherein the partition (140) is arranged on the side walls of the battery cell (110) and the connecting assembly (120).

10. A battery system, characterized in that: Comprising the battery module (100) according to any one of claims 1 to 9, there are a plurality of battery modules (100), and two adjacent battery modules (100) are connected to each other.

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