Battery module

Abstract

The utility model relates to the technical field of batteries, and discloses a battery module which comprises a battery cell group, two end plates and a fixing structure, the battery cell group is formed by sequentially arranging a plurality of battery cells along a first direction, and the first direction is the thickness direction of the battery cells; the two end plates are oppositely arranged at the two ends of the battery cell group along the first direction; the fixing structure comprises a main body and at least two connecting pieces; the main body is arranged between the two end plates, and the at least two connecting pieces are arranged on the two sides of the main body respectively; according to the utility model, the connecting piece is connected with the side, deviating from the battery cell group, of the end plate, and the end plate can apply a pre-tightening force to the battery cell group along the natural expansion direction of the battery cells, so that the stability of the end plate is enhanced, and the stability and reliability of the end plate in long-term use are ensured; the expansion of the battery cell group is controlled and limited, and the use safety and durability of the battery module are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery module. Background Art

[0002] The battery pack is composed of multiple battery modules, each of which is composed of multiple stacked battery cells. However, with continuous use during the charging and discharging process, the battery cells will expand.

[0003] Currently, the expansion of battery cells is mainly suppressed by the end plate structure. Although the end plate slows down the expansion rate of the battery cell to a certain extent, at the end of the battery cell life cycle, as the expansion accumulates, the inhibitory effect of the end plate gradually weakens; and the continuous expansion pressure will affect the stability of the end plate connection, thereby affecting the stability and safety of the entire battery module. Utility Model Content

[0004] In view of this, the utility model provides a battery module to solve the problem that the inhibitory effect on battery cell expansion gradually weakens at the end of the battery cell life cycle.

[0005] The utility model provides a battery module, including a battery cell group, two end plates and a fixing structure; the battery cell group is composed of a plurality of battery cells arranged in sequence along a first direction, and the first direction is the thickness direction of the battery cells; the two end plates are arranged at the two ends of the battery cell group relatively along the first direction; the fixing structure includes a main body and at least two connecting members; the main body is arranged between the two end plates, and at least two of the connecting members are respectively arranged on both sides of the main body; and the connecting member is connected to a side of the end plate away from the battery cell group.

[0006] Beneficial effects: By arranging the two end plates on both sides of the battery cell group along the thickness direction of the battery cell, it is possible to not only fix the battery cell group but also inhibit the expansion of the battery cell group; and since the connecting piece is connected to the side of the end plate away from the battery cell group, it is ensured that the end plate can apply a pre-tightening force to the battery cell group along the natural expansion direction of the battery cell, which not only significantly enhances the stability of the end plate and ensures its stability and reliability in long-term use, but also realizes the control and limitation of the expansion of the battery cell group, ensuring the safety and durability of the battery module.

[0007] In an optional embodiment, the main body is arranged on a side surface of the battery cell group along a second direction; the second direction is a height direction of the battery cells.

[0008] Beneficial effect: By arranging the main body on the side of the battery cell group along the second direction, the deviation of the battery cell group in the battery cell height direction can be limited, thereby ensuring the stability of the installation of the battery cell group.

[0009] In an alternative embodiment, the main body includes a vertical pressing plate and a plurality of horizontal pressing plates; the vertical pressing plate extends along the first direction, and both ends are respectively connected to the two connecting members; the plurality of horizontal pressing plates are arranged at intervals in sequence along the first direction and are all connected to the vertical pressing plate; the horizontal pressing plate extends along the third direction, and a corresponding horizontal pressing plate is arranged between every two adjacent battery cells along the first direction, and both sides of the horizontal pressing plate along the first direction are respectively abutted against two adjacent battery cells; the third direction is the length direction of the battery cell.

[0010] Advantageous effects: Since the main body is arranged on the side surface of the battery cell group along the second direction; and the vertical pressing plate extends along the first direction, and both ends are respectively connected to the connecting members, that is, the vertical pressing plate can limit the offset of the battery cell group in the height direction of the battery cell; and since a corresponding horizontal pressing plate is arranged between every two adjacent battery cells along the first direction, and both sides of the horizontal pressing plate along the first direction are respectively abutted against two adjacent battery cells, that is, the horizontal pressing plate can play a role in limiting and fixing for two adjacent battery cells along the first direction, which helps to further achieve the purpose of limiting the offset of the battery cell group in the height direction of the battery cell.

[0011] In an alternative embodiment, it further includes a bus bar. A battery cell pole is provided on the battery cell, and the battery cell pole is spaced from both the vertical pressing plate and the horizontal pressing plate; the bus bar is connected to the battery cell poles of two adjacent battery cells; and a part of the main body is located between the bus bar and the battery cell group.

[0012] Advantageous effects: The connection between two adjacent battery cells through the bus bar can achieve current-carrying transmission; by arranging the main body between the bus bar and the battery cell group, it can play a role in limiting and fixing the fixing structure in the height direction of the battery cell, enhancing the reliability and stability of the connection of the fixing structure.

[0013] In an alternative embodiment, a relief groove is provided on the bus bar, and the two connection ends of the bus bar are respectively located on both sides of the relief groove; when the two connection ends of the bus bar are respectively connected to two adjacent battery cells along the first direction, the horizontal pressing plate located between the bus bar and the battery cell group is located in the relief groove.

[0014] Advantageous effects: By providing a relief groove on the bus bar, it not only ensures the connection effect between the connection end of the bus bar and the battery cell pole, guaranteeing the smoothness and safety of current transmission; at the same time, it can also make the bus bar play a role in limiting the horizontal pressing plate, effectively preventing the horizontal pressing plate from accidentally shifting or loosening, thereby further improving the connection stability of the fixing structure.

[0015] In an alternative embodiment, the two connection ends of the busbar are respectively connected to the cell poles of two adjacent cells; the vertical pressing plate is located between the busbar and the cell group.

[0016] Beneficial effects: Since the vertical pressing plate is located between the busbar and the cell group, the avoidance space between the busbar and the cell group can be used for the installation of the vertical pressing plate, so that the vertical pressing plate occupies as little space on the upper end surface of the cell as possible, thereby avoiding the setting of the explosion-proof valve.

[0017] In an alternative embodiment, it further includes a binding strap, and the binding strap is arranged around the periphery of the cell group and the end plate.

[0018] Beneficial effects: By setting the binding strap, it can directly and significantly reduce the deformation of the cell group caused by expansion during charge and discharge cycles, and greatly enhance the fixing effect on the end plate, prevent the end plate from deforming, and ensure that the end plate can maintain the stability of its position even when the cell group expands. Through the dual-guarantee design of the binding strap and the fixing structure, not only the overall safety of the battery module is strengthened, but also the foundation for the long-life operation of the battery module is laid.

[0019] In an alternative embodiment, there are at least two binding straps, and the at least two binding straps are arranged at intervals in sequence along the second direction; the second direction is the height direction of the cell.

[0020] Beneficial effects: By setting at least two binding straps, the force distribution is further optimized in the height direction of the cell, achieving a uniform and firm binding effect on the cell group; and ensuring that the battery module always maintains a stable state during transportation, installation and use, improving the safety and reliability of the overall structure.

[0021] In an alternative embodiment, at least one of the binding straps is a rigid binding strap.

[0022] Beneficial effects: By setting at least one binding strap as a rigid binding strap, the risk of the binding strap breaking during the operation of the battery module can be prevented. It not only ensures that the binding strap can still maintain its inherent fixing effect under extreme working conditions, but also significantly improves the overall structural strength and durability of the battery module, maximally optimizes the safety and stability during the operation of the battery module, and enhances the overall safety performance.

[0023] In an alternative embodiment, it further includes a limiting structure, and the limiting structure is arranged on the end plate and is adapted to limit the position of the binding strap.

[0024] Beneficial effects: Through the setting of the limiting structure, not only is it ensured that the strap can be accurately installed at the predetermined position, but also the phenomenon of the strap slipping or shifting during the operation of the battery module is effectively prevented. Even in the face of complex working conditions such as vibration and impact, the stable state of the strap can be maintained, ensuring the long-term stable operation of the battery module.

[0025] In an alternative embodiment, the limiting structure includes a plurality of limiting blocks, and the plurality of limiting blocks are arranged at intervals in sequence along the second direction. Both sides of the strap along the second direction are respectively in contact with two of the limiting blocks.

[0026] Beneficial effects: By respectively arranging two limiting blocks on both sides of the strap along the height direction of the battery cell, double-sided dual limiting of the strap is achieved. Not only a firm support point is provided for the strap, but also the accurate position of the strap during the operation of the battery module is ensured, effectively preventing the strap from slipping or shifting due to factors such as vibration and impact. Description of the Drawings

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 The front view of the battery module according to the embodiment of the present invention;

[0029] Figure 2 The exploded view of the battery module according to the embodiment of the present invention;

[0030] Figure 3 The structural schematic diagram of the fixing structure according to the embodiment of the present invention;

[0031] Figure 4 The structural schematic diagram of the connection between the fixing structure and the end plate and the battery cell group according to the embodiment of the present invention;

[0032] Figure 5 The top view of the battery module according to the embodiment of the present invention;

[0033] Figure 6 For Figure 5 The sectional view taken along A - A in

[0034] Explanation of the reference numerals:

[0035] 1. Battery cell group; 2. Battery cell; 3. End plate; 4. Fixed structure; 401. Main body; 4011. Vertical pressure plate; 4012. Horizontal pressure plate; 402. Connector; 5. Busbar; 6. Binding strap; 7. Limiting structure; 8. Foam; 9. Insulation; 10. Top cover; 11. Integrated busbar system; 12. Output pole; 121. Output socket; 122. Output cover; 13. Base. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0037] Combine the following Figures 1 to 6 , describing an embodiment of the utility model.

[0038] According to an embodiment of the utility model, a battery module is provided, comprising a cell group 1, two end plates 3 and a fixing structure 4; the cell group 1 is composed of a plurality of cells 2 arranged in sequence along a first direction, and the first direction is the thickness direction of the cells 2; the two end plates 3 are arranged at opposite ends of the cell group 1 along the first direction; the fixing structure 4 comprises a main body 401 and at least two connecting members 402; the main body 401 is arranged between the two end plates 3, and at least two connecting members 402 are respectively arranged on both sides of the main body 401; and the connecting member 402 is connected to a side of the end plate 3 away from the cell group 1.

[0039] By arranging the two end plates 3 on both sides of the battery cell group 1 along the thickness direction of the battery cell 2, it is possible to not only fix the battery cell group 1 but also inhibit the expansion of the battery cell group 1; and since the connecting piece 402 is connected to the side of the end plate 3 away from the battery cell group 1, it is ensured that the end plate 3 can apply a pre-tightening force to the battery cell group 1 along the natural expansion direction of the battery cell 2, which not only significantly enhances the stability of the end plate 3 and ensures its stability and reliability in long-term use, but also realizes the control and limitation of the expansion of the battery cell group 1, ensuring the safety and durability of the battery module.

[0040] In a specific embodiment, the battery module further includes a top cover 10 , which is disposed on a side of the fixing structure 4 away from the battery cell group 1 and connected to the two end plates 3 .

[0041] In a specific embodiment, the battery module further includes an integrated busbar system 11 (CCS component), and the integrated busbar system 11 is disposed between the top cover 10 and the fixing structure 4.

[0042] Specifically, the battery module further includes two output poles 12. The two output poles 12 are sequentially arranged at intervals along the length direction of the battery cells 2 and are fixed on an end plate 3. Specifically, the output pole 12 includes an output base 121 and an output cover 122 which are connected to each other.

[0043] In a specific embodiment, the top cover 10 is provided with markings for the positive electrode and the negative electrode, which respectively correspond to the two output poles 12.

[0044] In one embodiment, the main body 401 is disposed on the side surface of the battery cell group 1 along the second direction; the second direction is the height direction of the battery cells 2.

[0045] By disposing the main body 401 on the side surface of the battery cell group 1 along the second direction, the offset of the battery cell group 1 in the height direction of the battery cells 2 can be restricted, ensuring the stability of the installation of the battery cell group 1.

[0046] In a specific embodiment, the battery cell group 1 is disposed between the main body 401 and the base 13, and the base 13 is disposed at the bottom of the battery cell group 1. Specifically, the base 13 is an insulating base 13; it is mainly used for the subsequent assembly of the battery module into the box, serving the purpose of insulating the bottom of the battery cells 2 from the box body.

[0047] In a specific embodiment, the lower surface of the end plate 3 is bolted and cooperated with the raised ribs of the base 13.

[0048] In one embodiment, the main body 401 includes a vertical pressing plate 4011 and a plurality of horizontal pressing plates 4012; the vertical pressing plate 4011 extends along the first direction, and both ends are respectively connected to the two connecting members 402; the plurality of horizontal pressing plates 4012 are sequentially arranged at intervals along the first direction and are all connected to the vertical pressing plate 4011; the horizontal pressing plates 4012 extend along the third direction, and one horizontal pressing plate 4012 is correspondingly disposed between every two adjacent battery cells 2 along the first direction, and both sides of the horizontal pressing plate 4012 along the first direction are respectively abutted against the two adjacent battery cells 2; the third direction is the length direction of the battery cells 2.

[0049] Since the main body 401 is arranged on the side surface of the battery cell group 1 along the second direction; and the vertical pressing plate 4011 extends along the first direction, and both ends are respectively connected to the connecting member 402, that is, the vertical pressing plate 4011 can limit the offset of the battery cell group 1 in the height direction of the battery cell 2; and since one of the transverse pressing plates 4012 is correspondingly arranged between every two adjacent battery cells 2 along the first direction, and both sides of the transverse pressing plate 4012 along the first direction are respectively abutted against the two adjacent battery cells 2, that is, the transverse pressing plate 4012 can play a role in limiting and fixing the two adjacent battery cells 2 along the first direction, which helps to further achieve the purpose of limiting the offset of the battery cell group 1 in the height direction of the battery cell 2.

[0050] In one embodiment, it further includes a bus bar 5. A battery cell pole is provided on the battery cell 2, and the battery cell pole is spaced from both the vertical pressing plate 4011 and the transverse pressing plate 4012; the bus bar 5 is connected to the battery cell poles of two adjacent battery cells 2; and part of the main body 401 is located between the bus bar 5 and the battery cell group 1.

[0051] The connection between two adjacent battery cells 2 through the bus bar 5 can achieve current-carrying transmission; by arranging the main body 401 between the bus bar 5 and the battery cell group 1, it can play a role in limiting and fixing the fixing structure 4 in the height direction of the battery cell 2, enhancing the reliability and stability of the connection of the fixing structure 4.

[0052] In one embodiment, a relief groove is provided on the bus bar 5, and the two connection ends of the bus bar 5 are respectively located on both sides of the relief groove; when the two connection ends of the bus bar 5 are respectively connected to two adjacent battery cells 2 along the first direction, the transverse pressing plate 4012 located between the bus bar 5 and the battery cell group 1 is located in the relief groove.

[0053] By providing a relief groove on the bus bar 5, it not only ensures the connection effect between the connection end of the bus bar 5 and the battery cell pole, guaranteeing the smooth and safe transmission of current; at the same time, it can also make the bus bar 5 play a role in limiting the transverse pressing plate 4012, effectively preventing the transverse pressing plate 4012 from accidentally shifting or loosening, thereby further improving the connection stability of the fixing structure 4.

[0054] In one embodiment, the two connection ends of the bus bar 5 are respectively connected to the battery cell poles of two adjacent battery cells 2; the vertical pressing plate 4011 is located between the bus bar 5 and the battery cell group 1.

[0055] Since the vertical pressing plate 4011 is located between the bus bar 5 and the battery cell group 1, the avoidance space between the bus bar 5 and the battery cell group 1 can be used for the installation of the vertical pressing plate 4011, so that the vertical pressing plate 4011 occupies as little space on the upper end surface of the battery cell 2 as possible, thus avoiding the setting of the explosion-proof valve.

[0056] In a specific embodiment, a plurality of vertical pressing plates 4011 are provided. The plurality of vertical pressing plates 4011 are arranged at intervals in the third direction. The plurality of horizontal pressing plates 4012 and the plurality of vertical pressing plates 4011 intersect vertically and horizontally to form a mesh structure, effectively ensuring the heat dissipation effect of the battery cell 2; and both ends of each vertical pressing plate 4011 are respectively connected to two connecting members 402.

[0057] Specifically, two vertical pressing plates 4011 are provided. The two vertical pressing plates 4011 are arranged at intervals in the third direction. The plurality of horizontal pressing plates 4012 are all located between the two vertical pressing plates 4011, and both ends of the horizontal pressing plate 4012 are respectively connected to the two vertical pressing plates 4011.

[0058] Specifically, the connecting member 402 is detachably connected to the end plate 3 through fasteners such as short bolts.

[0059] Specifically, each connecting member 402 is connected to the end plate 3 through two short bolts.

[0060] In one embodiment, a tie strap 6 is further included. The tie strap 6 is arranged around the periphery of the battery cell group 1 and the end plate 3.

[0061] By providing the tie strap 6, the deformation of the battery cell group 1 caused by expansion during charge and discharge cycles can be directly and significantly reduced, and the fixing effect on the end plate 3 is greatly enhanced, preventing the end plate 3 from deforming, and ensuring that the end plate 3 can maintain the stability of its position even when the battery cell group 1 expands. Through the dual-guarantee design of the tie strap 6 and the fixing structure 4, not only the overall safety of the battery module is strengthened, but also the foundation for the long-life operation of the battery module is laid.

[0062] In one embodiment, at least two tie straps 6 are provided. The at least two tie straps 6 are arranged at intervals in the second direction; the second direction is the height direction of the battery cell 2.

[0063] By providing at least two tie straps 6, in the height direction of the battery cell 2, the force distribution is further optimized, and a uniform and firm binding effect on the battery cell group 1 is achieved; and it is ensured that the battery module always maintains a stable state during transportation, installation and use, improving the safety and reliability of the overall structure.

[0064] In one embodiment, at least one of the tie straps 6 is a rigid tie strap.

[0065] By setting at least one strap 6 as a rigid strap, the risk of the strap 6 breaking during the operation of the battery module can be prevented. This not only ensures that the strap 6 can still maintain its inherent fixing effect under extreme working conditions, but also significantly improves the overall structural strength and durability of the battery module, optimizes the safety and stability during the operation of the battery module to the greatest extent, and enhances the overall safety performance.

[0066] In one implementation manner of this embodiment, at least two straps 6 are both rigid straps. In another implementation manner of this embodiment, at least one strap 6 is a rigid strap and the other strap 6 is a plastic strap.

[0067] In one embodiment, it further includes a limiting structure 7, and the limiting structure 7 is arranged on the end plate 3 and is adapted to limit the position of the strap 6.

[0068] Through the setting of the limiting structure 7, not only is it ensured that the strap 6 can be accurately installed at a predetermined position, but also the phenomenon of the strap 6 slipping or shifting during the operation of the battery module is effectively prevented. Even when facing complex working conditions such as vibration and impact, the stable state of the strap 6 can be maintained, ensuring the long-term stable operation of the battery module.

[0069] In one embodiment, the limiting structure 7 includes a plurality of limiting blocks, and the plurality of limiting blocks are arranged at intervals in sequence along the second direction, and both sides of the strap 6 along the second direction are respectively abutted against two of the limiting blocks.

[0070] By respectively arranging two limiting blocks on both sides of the strap 6 along the height direction of the battery cell 2, double-sided dual limiting of the strap 6 is achieved. This not only provides a stable support point for the strap 6, but also ensures the accurate position maintenance of the strap 6 during the operation of the battery module, effectively preventing the strap 6 from slipping or shifting due to factors such as vibration and impact.

[0071] In a specific implementation manner, there are two straps 6, and three limiting blocks are provided. The three limiting blocks are arranged at intervals in sequence along the height direction of the battery cell 2 and form two clamping gaps, and the two straps 6 are respectively located in the two clamping gaps.

[0072] In a specific implementation manner, three limiting blocks are provided at both ends of each end plate 3 along the length direction of the battery cell 2.

[0073] As an alternative implementation manner, it can also be that the limiting structure 7 includes a plurality of limiting grooves, and the limiting grooves are arranged at the ends of the end plate 3 along the length direction of the battery cell 2; and two limiting grooves are provided at the ends of each end plate 3 along the length direction of the battery cell 2, and the two limiting grooves are arranged at intervals in sequence along the height direction of the battery cell 2, and the two straps 6 are respectively located in the two limiting grooves.

[0074] In one embodiment, it further includes a foam 8, and the foam 8 is disposed between two adjacent battery cells 2.

[0075] By disposing the foam 8 between two adjacent battery cells 2, it can not only effectively prevent the short - circuit accident of the battery cells 2 caused by the collision between the battery cells 2; during operation or when being impacted by external force, it can also effectively reduce the resonance and vibration between two adjacent battery cells 2, avoiding damage between two adjacent battery cells 2; and it can also absorb the expansion stress of the battery cells 2, playing a buffering role.

[0076] In one embodiment, the foam 8 is in an I - shape.

[0077] By setting the foam 8 in an I - shaped structure, the vacant part of the foam 8 material is utilized to realize an efficient heat exchange channel between the battery cell 2 and the air. When the battery cell 2 is charging or discharging at a high rate, these vacant areas serve as windows for natural heat dissipation, and can quickly dissipate the heat generated by the battery cell 2 into the surrounding air, effectively avoiding the excessive increase in the overall temperature of the battery cell module. This design not only improves the thermal management ability of the battery pack, but also extends the service life of the battery cell 2, ensuring the safety and reliability of the battery module under high - intensity working conditions.

[0078] In a specific embodiment, the foam 8 is adhered to the battery cell 2 through glue, and the I - shaped structure setting can reduce the glue consumption and lower the cost.

[0079] In an alternative embodiment, the foam 8 can also be in an O - shape or a T - shape, etc.

[0080] In one embodiment, it further includes an insulating member 9, and the insulating member 9 is disposed between the battery cell group 1 and the end plate 3.

[0081] By disposing the insulating member 9 between the battery cell group 1 and the end plate 3, it can effectively isolate the battery cell group 1 and the end plate 3, avoid direct contact between the battery cell group 1 and the end plate 3, thereby preventing circuit short - circuit and ensuring the stable operation and safe use of the battery module.

[0082] In a specific embodiment, there are at least two groups of the battery cell groups 1, and at least two groups of the battery cell groups 1 are arranged in sequence along the length direction of the battery cell 2; an insulating member 9 is also disposed between two adjacent battery cell groups 1.

[0083] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery module, characterized in that, include: A battery cell group (1) is composed of a plurality of battery cells (2) arranged in sequence along a first direction, wherein the first direction is a thickness direction of the battery cells (2); Two end plates (3) arranged opposite to each other at two ends of the battery cell group (1) along the first direction; A fixing structure (4) comprises a main body (401) and at least two connecting members (402); the main body (401) is arranged between the two end plates (3), and at least two connecting members (402) are respectively arranged on both sides of the main body (401); and the connecting members (402) are connected to a side of the end plate (3) facing away from the battery cell group (1).

2. The battery module according to claim 1, wherein, The main body (401) is arranged on a side surface of the battery cell group (1) along a second direction; the second direction is a height direction of the battery cell (2).

3. The battery module according to claim 2, characterized in that, The main body (401) comprises: A vertical pressing plate (4011) extending along the first direction, and having two ends respectively connected to the two connecting members (402); A plurality of transverse pressing plates (4012) are arranged in sequence at intervals along the first direction and are all connected to the vertical pressing plate (4011); the transverse pressing plates (4012) extend along a third direction, and one transverse pressing plate (4012) is correspondingly arranged between each two adjacent battery cells (2) along the first direction, and the transverse pressing plates (4012) are respectively in contact with the two adjacent battery cells (2) on both sides along the first direction; the third direction is the length direction of the battery cell (2).

4. The battery module according to claim 3, wherein It also includes a busbar (5), the battery cell (2) is provided with a battery cell pole, the battery cell pole and the vertical pressure plate (4011) and the horizontal pressure plate (4012) are arranged at intervals; the busbar (5) is connected to the battery cell poles of two adjacent battery cells (2); and part of the main body (401) is located between the busbar (5) and the battery cell group (1).

5. The battery module according to claim 4, characterized in that, The busbar (5) is provided with a clearance groove, and the two connection ends of the busbar (5) are respectively located on both sides of the clearance groove; when the two connection ends of the busbar (5) are respectively connected to the two battery cells adjacent to each other along the first direction, the transverse pressure plate (4012) located between the busbar (5) and the battery cell group (1) is located in the clearance groove; And / or, the two connection ends of the busbar (5) are respectively connected to the cell poles of two adjacent battery cells (2); and the vertical pressure plate (4011) is located between the busbar (5) and the battery cell group (1).

6. The battery module according to claim 1, wherein, It also comprises a binding belt (6), wherein the binding belt (6) is arranged around the battery cell group (1) and the end plate (3).

7. The battery module according to claim 6, wherein, At least two of the binding straps (6) are provided, and the at least two binding straps (6) are sequentially spaced apart along a second direction; the second direction is the height direction of the battery core (2).

8. The battery module according to claim 7, wherein, At least one of the straps (6) is a rigid strap.

9. The battery module according to claim 7 or 8, characterized in that, It also comprises a limiting structure (7), which is arranged on the end plate (3) and is suitable for limiting the position of the binding belt (6).

10. The battery module according to claim 9, wherein The limiting structure (7) includes a plurality of limiting blocks, the plurality of limiting blocks are arranged at intervals in sequence along the second direction, and two sides of the strap (6) along the second direction are respectively abutted against the two limiting blocks.

Images