Battery module

Abstract

The application discloses a battery module, which comprises a support, a battery cell, a tray and a busbar, the battery cell is located between the support and the tray, the busbar is arranged on the support and is electrically connected with the battery cell, the support comprises a bracket main body and a side plate which are connected at an included angle, the busbar is arranged on the bracket main body, and the side plate is located at the side of the battery cell along the length direction of the battery cell, the distance between the upper surface of the tray and the bracket main body is L1, the size of the side plate is L2, and L1<=L2. By arranging the side plate at the side of the battery cell, the side plate can insulate and separate the battery cell from the outside, so that the use of the insulating film is reduced, the cost and the operation process of the production line are reduced, and the work efficiency of the industry is improved. The size of the side plate is not less than the distance between the upper surface of the tray and the bracket main body, so that the side plate can completely cover the battery cell, the battery cell is prevented from being exposed, the battery cell is prevented from being contacted with the fixing bolt during the unscrewing of the fixing bolt, and the protection effect is improved.

Description

Technical Field

[0001] This invention relates to the field of energy storage equipment technology, and more particularly to a battery module. Background Technology

[0002] Currently, conventional large cylindrical power battery modules do not have any insulation protection on the sides, or they only provide insulation protection by attaching an insulating film to the side of the cell. The above design has the following defects:

[0003] 1. The lack of any insulation protection on the sides poses a risk that the module tray fixing bolts may be loosened and enter the module, causing a short circuit in the module;

[0004] 2. Applying insulating film for insulation protection requires purchasing the insulating film separately, increasing material control and costs;

[0005] 3. Each module requires two insulating films to be applied on the production line, which increases the number of steps in the production line operation and reduces work efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a battery module that prevents conductive components such as fixing bolts from entering the interior of the battery module, and has a simple structure and fewer production line operation steps.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A battery module is provided, including a support member, a battery cell, a tray, and a busbar. The battery cell is located between the support member and the tray. The busbar is disposed on the support member and electrically connected to the battery cell. The support member includes a bracket body and a side plate connected at an angle. The busbar is disposed on the bracket body. The side plate is located on the side of the battery cell. Along the length direction of the battery cell, the distance between the upper surface of the tray and the bracket body is L1. The size of the side plate is L2, where L1 ≤ L2.

[0009] As a preferred embodiment of the battery module, a circuit board is included, which is disposed on the side of the side plate away from the battery cell.

[0010] As a preferred embodiment of the battery module, a mounting component is provided on the side panel, and the circuit board is detachably connected to the side panel through the mounting component.

[0011] As a preferred embodiment of the battery module, the mounting component includes a limiting buckle, which includes a fixing part, a connecting part, and a limiting part connected in sequence. The fixing part is connected to the side plate, and the connecting part is spaced from the surface of the side plate to form a mounting area. The circuit board is disposed in the mounting area, and the limiting part is located on the side of the circuit board away from the fixing part.

[0012] As a preferred embodiment of the battery module, the mounting component further includes a limiting protrusion disposed on the side plate, and a limiting hole is provided on the circuit board, into which the limiting protrusion is inserted.

[0013] As a preferred embodiment of the battery module, the fixing part, the connecting part, and the limiting part are arranged vertically, and the fixing part is located below the connecting part.

[0014] As a preferred embodiment of the battery module, the limiting portion is provided with a guide slope on the side away from the mounting area, and the guide slope is used to guide the circuit board into the mounting area.

[0015] As a preferred embodiment of the battery module, the tray is provided with a groove, the battery cell is disposed in the groove, and the side plate is inserted into the groove.

[0016] As a preferred embodiment of the battery module, a structural adhesive layer is provided between the battery cell and the bottom of the groove, and the side plate is spaced apart from the structural adhesive layer.

[0017] As a preferred embodiment of the battery module, the tray is provided with a detachable fastener for fixing the tray to an external structure. The size of the fastener is D1, and the distance between the side plate and the groove wall is D2, where D2 ≤ D1.

[0018] As a preferred embodiment of the battery module, the bracket body and the side plate are integrally formed.

[0019] As a preferred embodiment of the battery module, the upper surface of the bracket body is provided with a ring wall, and the busbar is located within the annular area of ​​the ring wall.

[0020] As a preferred embodiment of the battery module, it includes a conductive sheet with a notch in the enclosure. One end of the conductive sheet is connected to the busbar, and the other end passes through the notch and is connected to the circuit board.

[0021] The beneficial effects of this invention are as follows: By setting a side plate and placing it on the side of the battery cell, the side plate can provide insulation between the battery cell and the outside, thereby reducing the use of insulating film, lowering costs and production line operation procedures, and improving industrial efficiency; setting the size of the side plate to be no less than the distance between the upper surface of the tray and the main body of the support ensures that the side plate can completely cover the battery cell, thus preventing the battery cell from being exposed and improving the protection effect; setting the size of the side plate to be no less than the distance between the upper surface of the tray and the main body of the support ensures that the side plate can completely cover the battery cell, thus preventing the fixing bolts from contacting the battery cell when loosening, and improving the protection effect. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the battery module described in an embodiment of the present invention.

[0024] Figure 2 This is an exploded view of the battery module described in an embodiment of the present invention.

[0025] Figure 3 This is a cross-sectional view of the battery module described in an embodiment of the present invention.

[0026] Figure 4 for Figure 3 Enlarged diagram of point A.

[0027] Figure 5 This is a schematic diagram from a perspective of the support member, busbar, circuit board, output electrode base, and output electrode protective cover described in an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the support member, busbar, and circuit board according to an embodiment of the present invention.

[0029] Figure 7 for Figure 6 Enlarged diagram of point B.

[0030] Figure 8 This is a schematic diagram of the support member, busbar, and circuit board according to another embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the output electrode base and support member according to an embodiment of the present invention.

[0032] Figure 10 This is an exploded view of the output pole base and support member according to an embodiment of the present invention.

[0033] Figure 11 This is a schematic diagram of the output electrode base according to an embodiment of the present invention.

[0034] Figure 12 This is a schematic diagram of the output electrode base, busbar, and support component according to an embodiment of the present invention.

[0035] Figure 13 This is a schematic diagram of the output electrode base and support member according to another embodiment of the present invention.

[0036] Figure 14 This is another perspective view of the support member, busbar, circuit board, output electrode base, and output electrode protective cover described in an embodiment of the present invention.

[0037] Figure 15 for Figure 14 Enlarged diagram of point C.

[0038] Figure 16 This is a schematic diagram of the battery cell, support member, and temperature sensor described in an embodiment of the present invention.

[0039] In the picture:

[0040] 100. Battery cell; 200. Liquid cooling pipe;

[0041] 1. Support component; 11. Bracket body; 12. Side plate; 121. Boss; 1211. Curved surface; 1212. Receiving groove; 122. Limiting protrusion; 123. Connecting buckle; 124. Guide protrusion; 1241. Protrusion body; 1242. Limiting plate; 125. Machining hole; 126. Limiting buckle; 1261. Fixing part; 1262. Connecting part; 1263. Limiting part; 1264. Guide slope; 13. Enclosure; 131. Notch;

[0042] 2. Temperature sensor;

[0043] 31. Structural adhesive layer; 32. Plastic support frame;

[0044] 41. Connecting wire; 42. Conductive sheet;

[0045] 5. Circuit board; 51. Fastening hole;

[0046] 6. Output pole base; 61. Base body; 62. Mounting plate; 621. First side; 622. Second side; 623. Third side; 624. Guide groove; 625. Slot; 6251. First slot; 6252. Second slot; 63. Reinforcing plate; 64. Insert nut;

[0047] 7. Output pole protection cover;

[0048] 8. Busbar; 81. Output electrode;

[0049] 9. Tray; 91. Groove. Detailed Implementation

[0050] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] like Figures 1 to 6 As shown, the present invention provides a battery module including a support member 1, a battery cell 100, a tray 9, and a busbar 8. The battery cell 100 is located between the support member 1 and the tray 9. The busbar 8 is disposed on the support member 1 and is electrically connected to the battery cell 100. The support member 1 includes a bracket body 11 and a side plate 12 connected at an angle. The busbar 8 is disposed on the bracket body 11, and the side plate 12 is located on the side of the battery cell 100. Along the length direction of the battery cell 100, the distance between the upper surface of the tray 9 and the bracket body 11 is L1, and the size of the side plate 12 is L2, where L1≤L2. By setting a side plate 12 and placing it on the side of the battery cell 100, the side plate 12 can provide insulation between the battery cell 100 and the outside, thereby reducing the use of insulating film, lowering costs and production line operation procedures, and improving industrial efficiency. The side plate 12 is sized to be no less than the distance between the upper surface of the tray 9 and the support body 11, ensuring that the side plate 12 can completely cover the battery cell 100, thus preventing the battery cell 100 from being exposed and improving the protective effect. In this embodiment, the tray 9 is fixed to an external structure, and the side plate 12 is sized to be no less than the distance between the upper surface of the tray 9 and the support body 11, so that the side plate 12 can completely cover the battery cell 100. This prevents the fixing bolts from contacting the battery cell 100 when they are loosened, further improving the protective effect.

[0053] Furthermore, the battery module includes a circuit board 5, which is disposed on the side of the side plate 12 away from the battery cell 100. By placing the circuit board 5 on the side of the side plate 12 away from the battery cell 100, the space within the battery module can be fully utilized for mounting the circuit board 5. Since the battery cell 100 and the circuit board 5 are located on opposite sides of the side plate 12, the side plate 12 can directly function as an insulator, eliminating the need for additional insulation structures.

[0054] Furthermore, a mounting bracket is provided on the side plate 12, and the circuit board 5 is detachably connected to the side plate 12 via the mounting bracket. By providing the mounting bracket, the circuit board 5 and the side plate 12 can be easily fixed. After long-term use, the circuit board 5 may malfunction. The detachable connection between the circuit board 5 and the side plate 12 facilitates the repair and replacement of the circuit board 5.

[0055] Specifically, the mounting component includes a limiting buckle 126, which comprises a fixing part 1261, a connecting part 1262, and a limiting part 1263 connected in sequence. The fixing part 1261 is connected to the side plate 12, and the connecting part 1262 is spaced from the surface of the side plate 12 to form a mounting area. The circuit board 5 is disposed in the mounting area, and the limiting part 1263 is located on the side of the circuit board 5 away from the fixing part 1261. In this embodiment, the connecting part 1262 of the limiting buckle 126 is relatively large. The circuit board 5 is inserted into the mounting area from the limiting part 1263 of the limiting buckle 126. After being inserted into place, the circuit board 5 abuts against the fixing part 1261 and the limiting part 1263 respectively, thereby limiting the circuit board 5.

[0056] Reference Figure 6 In one embodiment, the mounting component further includes a limiting protrusion 122, which is disposed on the side plate 12. A limiting hole is provided on the circuit board 5, and the limiting protrusion 122 is inserted into the limiting hole. After installation, the limiting protrusion 122 can provide limiting in the Y and Z directions, and the limiting latch 126 can provide limiting in the X direction, thereby preventing the circuit board 5 from moving. (Refer to...) Figure 8 In another embodiment, the mounting component may not include the limiting protrusion 122, and the circuit board 5 can be installed and fixed by the cooperation of multiple limiting buckles 126.

[0057] Reference Figure 5 and Figure 6 In this embodiment, multiple limiting buckles 126 are provided, and the multiple limiting buckles 126 are arranged in the same direction. The fixing part 1261, connecting part 1262, and limiting part 1263 of the limiting buckle 126 are arranged in a vertical direction, and the fixing part 1261 is located below the connecting part 1262. The side where the limiting part 1263 is located is the side where the installation area opening is located. Setting the fixing part 1261 below the connecting part 1262, that is, setting the limiting part 1263 above the connecting part 1262, allows the installation area opening to face upwards. The circuit board 5 is inserted into the installation area from above. In use, this can prevent the circuit board 5 from falling out of the installation area due to gravity.

[0058] Preferably, a fastening groove or fastening hole 51 can be opened on the circuit board 5, and the limiting part 1263 of the limiting buckle 126 is inserted into the corresponding fastening groove or fastening hole 51 to achieve the limiting and fixing of the circuit board 5.

[0059] Reference Figure 7 Furthermore, a guide ramp 1264 is provided on the side of the limiting part 1263 away from the installation area. The guide ramp 1264 is used to guide the circuit board 5 into the installation area. By providing the guide ramp 1264, the installation difficulty of the circuit board 5 can be reduced, thereby improving production efficiency.

[0060] Reference Figure 4Specifically, the tray 9 is provided with a groove 91, the battery cell 100 is placed in the groove 91, and the side plate 12 is inserted into the groove 91. By setting the side plate 12 to be inserted into the groove 91, it can be ensured that the cooperation between the tray 9 and the side plate 12 can completely cover the battery cell 100, thereby isolating the battery cell 100 from the external environment and preventing the battery cell 100 from contacting conductive parts such as fixing bolts.

[0061] Furthermore, the tray 9 is provided with detachable fasteners for fixing the tray 9 to the external structure. The size of the fastener is D1, and the distance between the side plate 12 and the groove wall of the groove 91 is D2, where D2 ≤ D1. In this embodiment, the fastener is a fixing bolt with a size of D1. By setting the distance between the side plate 12 and the groove wall of the groove 91 to be no greater than the size of the fixing bolt, the fixing bolt can be prevented from entering the battery module through the gap between the side plate 12 and the tray 9, thereby preventing a short circuit in the battery module.

[0062] Preferably, a structural adhesive layer 31 is provided between the battery cell 100 and the bottom of the groove 91, and the side plate 12 is spaced apart from the structural adhesive layer 31. In this embodiment, a plastic bracket 32 ​​is provided in the groove 91, located between the bottom of the groove 91 and the structural adhesive layer 31, and the plastic bracket 32 ​​is used to support the structural adhesive layer 31. By setting the side plate 12 and the structural adhesive layer 31 apart, adhesion between the side plate 12 and the structural adhesive layer 31 can be avoided, thereby avoiding adhesion between the support member 1 and the structural adhesive layer 31, facilitating the disassembly and maintenance of the battery module in the future.

[0063] In this embodiment, the support body 11 and the side plate 12 are integrally formed. By setting the support body 11 and the side plate 12 as integrally formed, that is, by setting the support member 1 as an integral unit, the connection strength between the support body 11 and the side plate 12 can be improved, and the supporting force of the support member 1 can be increased.

[0064] Furthermore, a ring wall 13 protrudes from the upper surface of the support body 11, and the busbar 8 is located within the annular area of ​​the ring wall 13. It is understandable that the busbar 8 is relatively thin and is prone to bending and deformation under external force. By setting the ring wall 13 and placing the busbar 8 within the annular area of ​​the ring wall 13, the ring wall 13 can shield the sides of the busbar 8, thereby reducing the probability of external force colliding with the busbar 8.

[0065] Reference Figure 6Furthermore, the battery module includes a conductive sheet 42, and a notch 131 is provided on the enclosure 13. One end of the conductive sheet 42 is connected to the busbar 8, and the other end passes through the notch 131 and is connected to the circuit board 5 disposed on the side of the side plate 12. By providing the notch 131, the conductive sheet 42 can be easily installed. At the same time, it can also reduce the bending of the conductive sheet 42, and the enclosure 13 on both sides of the notch 131 can still provide protection for the conductive sheet 42, reducing the probability of the conductive sheet 42 being impacted by external forces. In this embodiment, the conductive sheet 42 is used to collect the voltage of the busbar 8.

[0066] In this embodiment, the battery cells 100 are arranged in six rows, and the liquid cooling pipes 200 are arranged in three rows, with the three liquid cooling pipes 200 respectively arranged between two adjacent rows of battery cells 100.

[0067] Reference Figures 9 to 13 The battery module also includes an output electrode base 6 and a connecting assembly. Both the bracket body 11 and the output electrode base 6 are insulating components. The bracket body 11 supports the busbar 8, and the output electrode base 6 connects to the output electrode plate 81 of the busbar 8 on the bracket body 11. The output electrode base 6 also connects to the output electrode protective cover 7. The output electrode base 6 is mounted on the bracket body 11 via the connecting assembly. The bracket body 11 and the output electrode base 6 are two independent parts, which can be processed separately. Appropriate materials can be selected to form the bracket body 11 and the output electrode base 6 as needed, avoiding softening and melting problems during use and reducing manufacturing difficulty.

[0068] An insert nut 64 is provided on the output electrode base 6. The insert nut 64 is fixed to the output electrode plate 81 of the busbar 8 by connecting bolts. The output electrode plate 81 of the busbar 8 combines the current of the six parallel branches of the cells 100 in the battery module for output. Therefore, the temperature rise in the area of ​​the output electrode base 6 will be relatively high. The material required for the output electrode base 6 has high temperature resistance requirements. Optionally, the output electrode base 6 is injection molded from PBT+30%GF material (PBT, polybutylene terephthalate; GF, glass fiber) with a heat distortion temperature of up to 200℃. In this embodiment, the bracket body 11 and the mounting plate 62 are integrally formed, that is, the support 1 is integrally formed. Since the support 1 is large in size and the temperature rise of the support 1 is much smaller than that of the output electrode base 6, in order to reduce the filling pressure of injection molding, the support 1 can be injection molded from PC+ABS material (PC, Polycarbonate; ABS, Acrylonitrile Butadiene Styrene) with a heat distortion temperature of up to 105℃.

[0069] In this embodiment, the output terminal base 6 is detachably connected to the bracket body 11 via a connecting assembly. It is understood that components will wear out during prolonged use; therefore, the detachable connection between the output terminal base 6 and the bracket body 11 facilitates component replacement and battery module maintenance.

[0070] In one optional embodiment, the output electrode base 6 and the bracket body 11 can also be fixedly connected. For example, the output electrode base 6 and the bracket body 11 can be fixed together using a hot riveting process. In this case, the connecting components are rivets and hole structures that mate with the rivets. Of course, the rivets need to be made of insulating material. Since the output electrode base 6 and the bracket body 11 are made of different materials, their melting points and injection molding temperatures are also different. In another optional embodiment, the output electrode base 6 can be formed first, and holes or groove structures can be pre-drilled on the output electrode base 6. Then, the output electrode base 6 is placed into the bracket body 11. In the mold of 1, the support body 11 is formed by injection molding. Since the material of the support body 11 has good fluidity, the injected material can enter the pre-reserved hole or groove structure on the output electrode base 6. After solidification and cooling, the support body 11 and the output electrode base 6 are fixed together. It can be understood that the material of the output electrode base 6 has a high melting point, and the output electrode base 6 will not melt during the injection molding of the support body 11. In this embodiment, the connecting component is the hole or groove structure provided on the output electrode base 6 and the part of the support body 11 that flows into the hole or groove structure during injection molding.

[0071] Reference Figure 9 and Figure 10 Specifically, the connecting assembly includes a connecting clip 123 and a slot 625. One of the connecting clip 123 and the slot 625 is disposed on the bracket body 11, and the other is disposed on the output electrode base 6. The connecting clip 123 is inserted into the slot 625. By setting the connecting clip 123 and the slot 625, the bracket body 11 and the output electrode base 6 are fixed in a snap-fit ​​manner, which facilitates the fixing and installation of the two. The connecting clip 123 and the slot 625 are directly formed on the bracket body 11 and the output electrode base 6, which can reduce the number of parts and thus simplify the installation steps. In other embodiments, the bracket body 11 and the output electrode base 6 can also be fixed by screws. In this case, one of the output electrode base 6 and the bracket body 11 is provided with a through hole, and the other is provided with a threaded hole. The screw passes through the through hole and is screwed into the threaded hole. Of course, the screw needs to be insulated. In this embodiment, the connecting assembly is a screw, a through hole and a threaded hole provided on the output electrode base 6 and the bracket body 11. Of course, the screw can be replaced by a bolt and a fixing nut.

[0072] In this embodiment, the connecting buckle 123 is inserted into the slot 625 along the Z direction. The connecting assembly also includes a guide groove 624 and a guide protrusion 124. One of the output electrode base 6 and the bracket body 11 is provided with the guide groove 624, and the other is provided with the guide protrusion 124. The guide protrusion 124 is slidably disposed within the guide groove 624, and the length of the guide groove 624 extends along the Z direction. By providing the guide groove 624, positioning can be provided for the installation of the output electrode base 6 and the bracket body 11, further facilitating their fixation and installation. In this embodiment, the guide groove 624 and the guide protrusion 124 can provide X-direction and Y-direction limits for the output electrode base 6.

[0073] Furthermore, the output electrode base 6 includes a base body 61 and a mounting plate 62. The mounting plate 62 has a first side 621 and a second side 622 at an angle. The first side 621 is away from the base body 61, and the two sides of the second side 622 are connected to the base body 61 and the first side 621, respectively. A guide groove 624 and a retaining groove 625 are recessed on the first side 621. It can be understood that the mounting plate 62 is a plate structure, and the guide groove 624 and the retaining groove 625 are both set on the mounting plate 62, which can reduce the processing difficulty.

[0074] Reference Figure 9 and Figure 10 Optionally, the output electrode base 6 further includes a reinforcing plate 63, which is connected to the base body 61 and the second side 622. It is understood that the mounting plate 62 has a cantilever structure. The guide groove 624 and the retaining groove 625 provided on the mounting plate 62 will weaken the strength of the mounting plate 62. Providing the reinforcing plate 63 can improve the connection strength between the mounting plate 62 and the base body 61, while also increasing the strength of the mounting plate 62 itself. In this embodiment, six reinforcing plates 63 are provided, three guide grooves 624 are provided, and two retaining grooves 625 are provided. The guide grooves 624 and retaining grooves 625 are respectively provided in the five empty areas formed by the six reinforcing plates 63, wherein the retaining grooves 625 are located between two adjacent guide grooves 624.

[0075] Reference Figures 9 to 11In one embodiment, the mounting plate 62 has a third side surface 623, which is parallel to the second side surface 622. A guide groove 624 passes through the second side surface 622 and the third side surface 623. The guide protrusion 124 includes a protrusion body 1241, one side of which is connected to the bracket body 11, and the other side is provided with a limiting plate 1242. The protrusion body 1241 is inserted into the guide groove 624, and the limiting plate 1242 abuts against the second side surface 622. The bracket body 11 and the third side surface 623 abut against each other. By setting the guide groove 624 to pass through the second side surface 622 and the third side surface 623, the guide groove 624 is equivalent to a notch 131 structure set on the mounting plate 62, which can reduce the processing difficulty of the guide groove 624. In this embodiment, the output electrode base 6 is injection molded, and the guide groove 624 in the shape of a notch 131 can reduce the design difficulty of the mold and reduce the cost. Since the guide groove 624 penetrates the second side 622 of the mounting plate 62, the output electrode base 6 lacks a limit in the Y direction. The setting of the limit plate 1242 allows the mounting plate 62 to be clamped between the bracket body 11 and the limit plate 1242, ensuring the connection stability between the output electrode base 6 and the bracket body 11.

[0076] Reference Figure 13 In another embodiment, the guide groove 624 may not penetrate the second side 622 and the third side 623. In this case, an L-shaped guide protrusion 124 can be provided, with one end of the guide protrusion 124 connected to the bracket body 11 and the other end inserted into the guide groove 624.

[0077] Reference Figure 9 and Figure 10 When the connecting buckle 123 and the slot 625 are engaged, the guide protrusion 124 and the groove wall at the end of the guide groove 624 abut together. By setting the guide protrusion 124 and the groove wall at the end of the guide groove 624 to abut together, the cooperation between the guide protrusion 124 and the guide groove 624 can also limit the movement of the output electrode base 6 in the Z direction, further improving the stability of the output electrode base 6.

[0078] Furthermore, the slot 625 includes a first slot 6251 and a second slot 6252 connected at an angle. The first side 621 has a recessed first slot 6251, and the second slot 6252 is located on the wall of the first slot 6251 and extends through the second side 622. The engaging position of the connecting buckle 123 is inserted into the second slot 6252 and abuts against the wall of the second slot 6252. By setting the second slot 6252 to extend through the second side 622, the processing difficulty of the output electrode base 6 can be reduced, thereby reducing processing costs. Since the guide groove 624 extends through the second side 622 and the third side 623, setting the second slot 6252 to extend through the second side 622 can make the opening direction on the mounting plate 62 consistent, which can also reduce the design difficulty of the mold and reduce production costs.

[0079] In this embodiment, each connecting buckle 123 and guide protrusion 124 on the bracket body 11 is provided with a machining hole 125. Since the bracket body 11 is injection molded, the machining hole 125 can reduce the number of sliders in the mold, thereby reducing the design difficulty of the mold and reducing the cost.

[0080] Reference Figures 14 to 16 The battery module also includes a temperature sensor 2. A receiving groove 1212 is provided on the side of the side plate 12 near the battery cell 100, with the opening of the receiving groove 1212 facing the battery cell 100. The temperature sensor 2 is disposed within the receiving groove 1212. By providing the side plate 12, an installation position for the temperature sensor 2 can be provided. By placing the side plate 12 on the side of the battery cell 100, the position of the temperature sensor 2 can be flexibly adjusted according to the size of the battery cell 100, and the position of the temperature sensor 2 is not limited by the position of the liquid cooling plate.

[0081] Furthermore, a boss 121 protrudes from the side of the side plate 12 facing the battery cell 100, and a receiving groove 1212 is disposed on the boss 121. By providing the boss 121, the local thickness of the side plate 12 can be increased without affecting the overall thickness of the side plate 12, which facilitates the forming of the receiving groove 1212.

[0082] Preferably, the battery cell 100 is cylindrical, and the boss 121 has an arc surface 1211 that fits against the side of the battery cell 100. A receiving groove 1212 is provided on the arc surface 1211. By providing an arc surface 1211 on the boss 121 and opening a receiving groove 1212 on the arc surface 1211, the receiving groove 1212 can be closer to the battery cell 100, and the heat generated by the battery cell 100 can be more effectively transferred to the temperature sensor 2, thereby improving the accuracy of temperature detection.

[0083] Furthermore, referring to Figure 16 The battery cell 100 is a cylindrical battery cell, meaning that the battery cell 100 is cylindrical in shape, and there is a space between two adjacent battery cells 100. The boss 121 is disposed in the space between two battery cells 100. By placing the boss 121 in the space between two battery cells 100, not only can the space between the two battery cells 100 be fully utilized to place the temperature sensor 2, but the temperature sensor 2 can also be placed closer to the battery cell 100 to accurately measure the temperature of the battery cell 100.

[0084] Optionally, the receiving groove 1212 is filled with a thermally conductive adhesive layer, and the temperature sensor 2 is located within the thermally conductive adhesive layer. It is understood that when the heat generated by the battery cell 100 is transferred to the temperature sensor 2, some of the heat will be dissipated through the air. The thermally conductive adhesive layer can reduce heat loss, thereby improving the accuracy of the temperature sensor 2.

[0085] Furthermore, two side plates 12 are provided, located on opposite sides of the bracket body 11, and each side plate 12 is provided with a receiving groove 1212. By providing two side plates 12, the temperature on both sides of the battery module can be detected separately, thereby improving the accuracy of the detection.

[0086] Preferably, each side plate 12 is provided with a plurality of receiving slots 1212, which are spaced apart along the length of the side plate 12, and each receiving slot 1212 is provided with a temperature sensor 2. By arranging multiple temperature sensors 2, the temperature detection points are increased, and the temperature of the battery module can be detected from all directions, thereby more accurately determining the heat generation of the battery cells 100 in the battery module.

[0087] Reference Figure 6 and Figure 15 Furthermore, the battery module includes a connecting wire 41, and a receiving groove 1212 extends along the central axis of the cell 100 to penetrate the support member 1. One end of the connecting wire 41 is connected to the temperature sensor 2, and the other end is connected to the circuit board 5. By placing the circuit board 5 on the side of the side plate 12 away from the cell 100, the space of the side plate 12 can be fully utilized to fix the circuit board 5. Fixing the circuit board 5 on the side plate 12 can also shorten the distance between the circuit board 5 and the temperature sensor 2, shorten the length of the connecting wire 41, and thus simplify the structure of the battery module. In this embodiment, the circuit board 5 is an FPC (Flexible Printed Circuit).

[0088] In this embodiment, the temperature sensor 2 is securely mounted within the receiving groove 1212. The width of the opening of the receiving groove 1212 is smaller than the size of the temperature sensor 2. Along the central axis of the battery cell 100, at least one end of the receiving groove 1212 penetrates the support member 1. One end of the connecting wire 41 is connected to the temperature sensor 2, and the other end passes through the bracket body 11 and is connected to the circuit board 5. By setting at least one end of the receiving groove 1212 to penetrate the bracket body 11, the routing of the connecting wire 41 can be facilitated, further simplifying the structure of the battery module. Since one or both ends of the receiving groove 1212 penetrate through it, and the temperature sensor 2 is securely mounted within the receiving groove 1212, the temperature sensor 2 can be prevented from detaching from the receiving groove 1212, and displacement of the temperature sensor 2 can also be prevented. (Refer to...) Figure 16 The two ends of the receiving groove 1212 respectively penetrate the protrusion and the support body 11, as shown in the reference. Figure 15 The end of the receiving groove 1212 near the support body 11 penetrates the support body 11.

[0089] In this embodiment, the receiving groove 1212 is strip-shaped and extends vertically, that is, it extends along the length of the battery cell 100. Therefore, the position of the temperature sensor 2 can be adjusted up and down as needed to realize the temperature acquisition of the battery cell 100.

[0090] Furthermore, the boss 121, the side plate 12, and the bracket body 11 are an integral structure, that is, the support component 1 is integrally formed. The support component 1 can be processed by CNC (Computer Numerical Control) or injection molding, which can reduce the assembly process of the battery module.

[0091] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0092] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0093] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0094] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A battery module, comprising a support member, a battery cell, a tray, and a busbar, wherein the battery cell is located between the support member and the tray, the busbar is disposed on the support member, and the busbar is electrically connected to the battery cell, characterized in that, The support includes a bracket body and a side plate connected at an angle. The busbar is disposed on the bracket body. The side plate is located on the side of the battery cell. Along the length direction of the battery cell, the distance between the upper surface of the tray and the bracket body is L1. The size of the side plate is L2, where L1≤L2, so that the side plate can completely cover the battery cell. The circuit board is disposed on the side of the side plate away from the battery cell; The side plate is provided with a mounting component, and the circuit board is detachably connected to the side plate through the mounting component; The mounting component includes a limiting buckle, which includes a fixing part, a connecting part, and a limiting part connected in sequence. The fixing part is connected to the side plate, and the connecting part is spaced from the surface of the side plate to form an installation area. The circuit board is disposed in the installation area, and the limiting part is located on the side of the circuit board away from the fixing part. The fixing part is located below the connecting part, and the circuit board abuts against the fixing part and the limiting part, respectively.

2. The battery module according to claim 1, characterized in that, The mounting component also includes a limiting protrusion, which is disposed on the side plate. The circuit board is provided with a limiting hole, and the limiting protrusion is inserted into the limiting hole.

3. The battery module according to claim 2, characterized in that, The fixing part, the connecting part, and the limiting part are arranged in a vertical direction.

4. The battery module according to claim 1, characterized in that, A guide ramp is provided on the side of the limiting part away from the mounting area, and the guide ramp is used to guide the circuit board into the mounting area.

5. The battery module according to any one of claims 1-4, characterized in that, The tray has a groove, the battery cell is placed in the groove, and the side plate is inserted into the groove.

6. The battery module according to claim 5, characterized in that, A structural adhesive layer is provided between the battery cell and the bottom of the groove, and the side plate is spaced apart from the structural adhesive layer.

7. The battery module according to claim 5, characterized in that, The tray is provided with a detachable fastener for fixing the tray to an external structure. The size of the fastener is D1, and the distance between the side plate and the groove wall is D2, where D2 ≤ D1.

8. The battery module according to any one of claims 1-4, characterized in that, The main body of the bracket and the side plate are integrally formed.

9. The battery module according to any one of claims 1-4, characterized in that, The upper surface of the support body is provided with a ring wall, and the busbar is located within the annular area of ​​the ring wall.

10. The battery module according to claim 9, characterized in that, It includes a conductive sheet, and the enclosure has a notch. One end of the conductive sheet is connected to the busbar, and the other end passes through the notch and is connected to the circuit board.

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