Lateral lying type battery module

Abstract

The utility model discloses a side-lying type battery module. The side-lying type battery module comprises a battery cell assembly, two module end plates and at least two strapping tapes, the battery cell assembly comprises a plurality of battery cells which are stacked side by side, and each battery cell is arranged in a side-lying manner; the two module end plates are oppositely arranged and abut against the left side and the right side of the battery cell assembly respectively, and limiting grooves are formed in the positions, corresponding to the strapping tapes, of the module end plates. Each strapping tape binds the two module end plates, and each strapping tape is embedded into the limiting groove of the corresponding module end plate. The utility model has the advantage of long service life.

Description

Technical Field

[0001] This utility model relates to the field of battery modules, and in particular to a side-lying battery module. Background Technology

[0002] Many existing battery modules use sheet metal frames to fix the battery cell assembly. The sheet metal frame is assembled with bolts, which has good structural strength. However, after long-term use, each battery cell in the battery cell assembly will expand. The good structural strength of the sheet metal frame will restrict the expansion of the battery cell, preventing it from expanding too much. This will cause the pressure on the battery cell (i.e. the force exerted by the sheet metal frame on the battery cell) to rise continuously. When the pressure on the battery cell exceeds a certain range, it will cause the battery cell's lifespan to decline rapidly, affecting the lifespan of the entire battery module.

[0003] In view of the above problems, it is necessary to study a side-lying battery module, which has the advantage of long service life. Utility Model Content

[0004] The purpose of this invention is to provide a side-lying battery module with the advantage of long service life.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A side-lying battery module includes a cell assembly, two module end plates, and at least two straps. The cell assembly includes multiple cells stacked side by side, each cell lying on its side. The two module end plates are positioned opposite each other and abut against the left and right sides of the cell assembly, respectively. Each module end plate has a limiting groove corresponding to the straps. Each strap binds the two module end plates, and each strap is embedded in the limiting groove of each module end plate.

[0007] An insulating sheet is sandwiched between the battery cell assembly and the two module end plates.

[0008] The insulating sheet is bonded to the battery cell assembly and the module end plate.

[0009] The positive and negative terminals of each cell in the battery cell assembly are located on the front and rear sides of the cell, respectively; the cells of the battery cell assembly are connected in series and / or in parallel through a busbar.

[0010] The side-lying battery module also includes two insulating covers, which respectively cover the busbars on the front and rear sides of the battery cell assembly.

[0011] The insulating cover is bonded to the battery cell assembly.

[0012] The side-lying battery module also includes cushioning foam that is bonded to the bottom of the cell assembly and each module end plate.

[0013] The module end plate forms a contact plane on the side facing the battery cell assembly, and forms intersecting reinforcing ribs on the side away from the battery cell assembly.

[0014] The module end plate is provided with lifting lugs on the front and rear sides, and the lifting lugs are provided with lifting holes.

[0015] The module end plate has a fixing plate on the side away from the battery cell assembly, and the fixing plate has at least two bolt holes.

[0016] By adopting the above solution, this utility model uses at least two straps to bind two module end plates to fix the battery cell assembly and the module end plates. When the individual cells of the battery cell assembly expand, the straps can extend accordingly to provide a certain expansion space for the battery cell assembly, thereby avoiding excessive pressure on the individual cells of the battery cell assembly. This effectively extends the life of the individual cells of the battery cell assembly and improves the service life of the side-lying battery module of this utility model. In addition, the side-lying placement of the individual cells of the battery cell assembly results in a high space utilization rate in the height direction, a low overall center of gravity, and high stability for the side-lying battery module of this utility model. Attached Figure Description

[0017] Figure 1 This is an exploded view of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the module end plate of this utility model. Figure 1 .

[0020] Figure 4 This is a schematic diagram of the module end plate of this utility model. Figure 2 .

[0021] Figure 5 This is a schematic diagram of the module end plate of this utility model. Figure 3 .

[0022] Label Explanation:

[0023] Battery cell assembly 1, battery cell 11, busbar 12,

[0024] Module end plate 2, limiting groove 21, abutment plane 22, reinforcing rib 23, lifting lug 24, lifting hole 241, fixing plate 25, bolt through hole 251, tooling positioning hole 26, limiting protrusion 27, output component mounting hole 28.

[0025] 3 straps

[0026] Insulating sheet 4,

[0027] Insulating cover plate 5,

[0028] 6. Cushioning foam. Detailed Implementation

[0029] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0030] like Figures 1 to 5 As shown, this utility model discloses a side-lying battery module, which includes a cell assembly 1, two module end plates 2, and at least two strapping straps 3; wherein, the cell assembly 1 includes multiple cells 11 stacked side by side, each cell 11 being placed sideways (e.g., ...). Figure 1 (As shown); the two module end plates 2 are arranged opposite each other and abut against the left and right sides of the cell assembly 1 respectively. The module end plates 2 are provided with limiting grooves 21 corresponding to the binding straps 3. Each binding strap 3 binds the two module end plates 2, and each binding strap 3 is embedded in the limiting groove 21 of each module end plate 2 to prevent the binding strap 3 from shifting.

[0031] This invention uses at least two straps 3 to bind two module end plates 2 to secure the cell assembly 1 and the module end plates 2. When the individual cells 11 of the cell assembly 1 expand, the straps 3 can extend accordingly to provide a certain expansion space for the cell assembly 1, thereby avoiding excessive pressure on the individual cells 11 of the cell assembly 1. This effectively extends the lifespan of the individual cells 11 of the cell assembly 1 and improves the service life of the side-lying battery module of this invention. In addition, the side-lying placement of the individual cells 11 of the cell assembly 1 results in a higher space utilization rate in the height direction, a lower overall center of gravity, and higher stability for the side-lying battery module of this invention.

[0032] In embodiments of this invention, insulating sheets 4 are sandwiched between the cell assembly 1 and the two module end plates 2. The insulating sheets 4 can be bonded to the cell assembly 1 and the module end plates 2 respectively. The insulating sheets 4 can prevent short circuits between the cell assembly 1 and external metal parts, providing good insulation protection. In addition, the insulating sheets 4 also serve as a buffer, absorbing or dispersing some of the impact force from collisions with the side-lying battery module of this invention, reducing the risk of damage to the side-lying battery module of this invention. Moreover, the insulating sheets 4 can also absorb the expansion force when the cells 11 expand, thereby preventing excessive pressure on each cell 11 of the cell assembly 1.

[0033] In embodiments of this invention, the positive and negative terminals of each cell 11 in the cell assembly 1 are located on the front and rear sides of the cell 11, respectively. The cells 11 of the cell assembly 1 are connected in series and / or in parallel via busbars 12. Furthermore, the side-lying battery module of this invention also includes two insulating covers 5, which respectively cover the busbars 12 on the front and rear sides of the cell assembly 1. The insulating covers 5 are bonded to the cell assembly 1. These insulating covers 5 can prevent short circuits between the busbars 12 and external metal parts, thus providing good insulation protection. Simultaneously, the insulating covers 5 can also prevent dust and small amounts of moisture from entering the side-lying battery module of this invention, minimizing the impact of dust and small amounts of moisture on the electrical and heat dissipation performance of the side-lying battery module of this invention.

[0034] In an embodiment of this utility model, the module end plate 2 forms an abutment plane 22 on the side facing the cell assembly 1, so that the module end plate 2 applies force evenly to the cell assembly 1; the side of the module end plate 2 away from the cell assembly 1 forms intersecting reinforcing ribs 23, which can effectively improve the strength of the module end plate 2; in addition, the reinforcing ribs 23 can be used in conjunction with cable ties to fix the wire harness.

[0035] In this embodiment of the present invention, lifting lugs 24 are provided on the front and rear sides of the module end plate 2, and the lifting lugs 24 are provided with lifting holes 241, which facilitates the lifting of the side-lying battery module of the present invention by means of a lifting tool. A fixing plate 25 is provided on the side of the module end plate 2 away from the cell assembly 1. The fixing plate 25 is provided with at least two bolt holes 251 for fixing bolts to pass through, so as to lock the side-lying battery module of the present invention into the chassis by means of fixing bolts; the height H of the fixing plate 25 can be 23mm~30mm, so that the length of the fixing bolts can be relatively short.

[0036] In the embodiments of this utility model, the main body thickness T of the module end plate 2 can be 20mm~27mm, the maximum thickness M of the module end plate 2 is 28mm~35mm, and the minimum thickness M of the module end plate 2 is 8mm~15mm. This setting makes the module end plate 2 as thin as possible while ensuring strength, which helps to reduce the overall cost and weight.

[0037] In an embodiment of this utility model, the module end plate 2 may be provided with a tooling positioning hole 26, so that the module end plate 2 can be positioned by a tooling that cooperates with the tooling positioning hole 26, thereby facilitating the assembly of the side-lying battery module of this utility model. Furthermore, the module end plate 2 may be provided with a limiting protrusion 27 corresponding to the limiting groove 21, the limiting protrusion 27 cooperating with the limiting groove 21 to better limit the binding strap 3. The module end plate 2 may also be provided with an output component mounting hole 28 for mounting an output component, which is used for electrical connection with the cell assembly 1. Mounting holes 28 may be provided on both sides of the module end plate 2 to improve the commonality of the module end plate 2.

[0038] In embodiments of this utility model, the side-lying battery module further includes buffer foam 6 bonded to the bottom of the cell assembly 1 and each module end plate 2. The buffer foam 6 can reduce the transmission of external impacts to the side-lying battery module, preventing damage to the inside of the cell 11 caused by these impacts. It can also reduce the noise when the side-lying battery module vibrates. In addition, the buffer foam 6 also serves as insulation protection, effectively separating the side-lying battery module from the chassis or mounting surface to prevent short circuits.

[0039] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A side-lying battery module, characterized in that: Includes battery cell assembly, two module end plates, and at least two strapping straps; The battery cell assembly consists of multiple battery cells stacked side by side, with each cell lying on its side. The two module end plates are arranged opposite each other and abut against the left and right sides of the cell assembly respectively. The module end plates are provided with limiting grooves corresponding to the strapping. Insulating sheets are sandwiched between the cell assembly and the two module end plates. The side of the module end plate facing the cell assembly forms an abutting plane, and the side of the module end plate away from the cell assembly forms crisscrossing reinforcing ribs. Each strap binds two module end plates, and each strap is embedded in the limiting groove of each module end plate.

2. The side-lying battery module as described in claim 1, characterized in that: The insulating sheet is bonded to the battery cell assembly and the module end plate.

3. The side-lying battery module as described in claim 1, characterized in that: The positive and negative terminals of each cell in the battery cell assembly are located on the front and rear sides of the cell, respectively; the cells of the battery cell assembly are connected in series and / or in parallel through a busbar.

4. The side-lying battery module as described in claim 3, characterized in that: It also includes two insulating covers, which respectively cover the front and rear busbars of the battery cell assembly.

5. The side-lying battery module as described in claim 4, characterized in that: The insulating cover is bonded to the battery cell assembly.

6. The side-lying battery module as described in claim 1, characterized in that: It also includes cushioning foam that is bonded to the bottom of the cell assembly and each module end plate.

7. The side-lying battery module as described in claim 1, characterized in that: The module end plate is provided with lifting lugs on the front and rear sides, and the lifting lugs are provided with lifting holes.

8. The side-lying battery module as described in claim 1, characterized in that: The module end plate has a fixing plate on the side away from the battery cell assembly, and the fixing plate has at least two bolt holes.

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