A spliced ​​battery module

Abstract

The present invention relates to the technical field of battery modules, and in particular to a spliced ​​battery module, which comprises two side plates, a plurality of battery cells fixedly arranged between the two side plates, and a cover plate fixedly arranged on the top of the two side plates, and also comprises end plates fixedly arranged on the two ends of the side plates, respectively, the two ends of the two side plates are respectively provided with edging, the bottoms of the two side plates are respectively provided with supporting edges, the end plates are respectively arranged at the two ends of the plurality of battery cells and are fixed in the two side plates through the edging and the supporting edges, a collecting plate assembly for fixing the plurality of battery cells is provided on the top of the plurality of battery cells, a connecting electrode sheet for fixing the plurality of battery cells and for connecting the positive and negative electrodes of the plurality of battery cells is provided on the collecting plate assembly, fixing parts are respectively fixedly arranged at the two ends of the collecting plate assembly, pole column fixing seats are respectively fixedly arranged on the two end plates, the collecting plate assembly is respectively fixedly connected to the fixing seats through fixing parts and fixedly connected to the two end plates, and the cover plate is fixedly arranged on the collecting plate assembly, which not only has high stability, but also has a short splicing production process, high efficiency, low cost, and guaranteed safety performance.

Description

Technical Field

[0001] The present invention relates to the technical field of battery modules, and in particular to a spliced ​​battery module. Background Art

[0002] The battery module achieves a larger capacity and higher voltage output by connecting multiple single cells in a certain series-parallel manner. The common practice in the industry is to provide a splicing block as a carrier of the cell, use glue technology to fix the connection between the cells, select the number of splicing blocks according to actual production needs, load the cells on the splicing blocks, and achieve a larger capacity and higher voltage output by splicing and combining multiple splicing blocks.

[0003] However, when the existing spliced ​​battery modules are spliced, the splicing stability is poor, the splicing efficiency is low, the cost is high, and the safety cannot be guaranteed. These are all issues that structural development engineers need to consider and solve during structural development. Summary of the invention

[0004] In order to overcome the above technical defects, the purpose of the present invention is to provide a spliced ​​battery module with high stability, short splicing production process time, high efficiency, low cost and guaranteed safety performance.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A spliced ​​battery module comprises two side plates, a plurality of battery cells fixed between the two side plates and a cover plate fixed on the top of the two side plates, and also comprises end plates fixed on the two ends of the side plates respectively, the two ends of the two side plates are respectively provided with a edging, the bottoms of the two side plates are respectively provided with a supporting edge, the end plates are respectively arranged at the two ends of the plurality of battery cells and are fixed in the two side plates through the edging and the supporting edge, a collecting plate assembly for fixing the plurality of battery cells is provided on the top of the plurality of battery cells, the collecting plate assembly is provided with connecting pole pieces for fixing the plurality of battery cells and for connecting the positive and negative poles of the plurality of battery cells, fixing parts are respectively fixed on the two ends of the collecting plate assembly, pole column fixing seats are respectively fixed on the two end plates, the collecting plate assembly is fixedly connected to the fixing seats through fixing parts and fixedly connected to the two end plates, and the cover plate is fixedly arranged on the collecting plate assembly.

[0007] Furthermore, the collecting plate assembly is formed by a plurality of collecting plates respectively fixed on the battery cells and fixed by mortise and tenon joints.

[0008] Furthermore, grooves for clamping the battery cells are respectively provided at both ends of the collecting plate, and clamping blocks for fixing the connecting electrodes are provided on the periphery of the grooves. Positioning blocks and limiting grooves for mortise and tenon jointing the collecting plates are respectively provided on both sides of the collecting plate.

[0009] Furthermore, the collecting plate is also provided with a wiring harness slot and a first connecting hole for fixing the wiring.

[0010] Furthermore, a plurality of second connection holes are evenly distributed on the cover plate.

[0011] Furthermore, the cover plate is fixedly connected to the collecting plate by first rivets passing through the second connecting hole and the first connecting hole respectively.

[0012] Furthermore, the first rivet is a plastic rivet.

[0013] Furthermore, two adjacent battery cells are fixedly connected by double-sided adhesive tape.

[0014] Furthermore, the two side plates are provided with a plurality of through holes for heat dissipation of the battery core, and insulating films are fixedly provided on the inner side walls of the side plates and the cover plate, respectively.

[0015] Furthermore, a plurality of evenly distributed third connection holes are respectively provided on the edge.

[0016] Furthermore, a plurality of evenly distributed fourth connection holes are respectively provided on the two end plates, and high-density foam is respectively fixed on the side walls of the two end plates.

[0017] Furthermore, the two end plates are respectively fixedly connected to the edge wrapping by second rivets passing through the third connecting hole and the fourth connecting hole and are arranged in the two side plates.

[0018] Furthermore, at least two sixth connection holes are respectively provided on the pole fixing seat, and the bottom of the pole fixing seat is also respectively provided with a connection seat for fixedly connecting the end plate.

[0019] Furthermore, the fixing member is an "L"-shaped fixing member, and a fifth connecting hole is also provided on the fixing member.

[0020] Furthermore, the fixing member is fixedly connected to the pole fixing seat by passing through the fifth connecting hole and the sixth connecting hole via a third rivet.

[0021] In summary, the advantages of the present invention are as follows: by using adhesive technology between two adjacent battery cells, the present technology can save the time for structural adhesive to dry compared with the existing gluing technology, improve product production consistency, and reduce the time efficiency of its production process; high-density foam is fixed on the side walls of the two end plates respectively, so that there is enough effective space between the battery cell and the end plate to ensure its safety, and the end plate adopts triangular hollow aluminum profile technology, the triangular aluminum profile can ensure the overall fixing strength of the module, and can also ensure the breathing effect of the battery cell in the module, thereby reducing the internal pressure of the battery cell; the hollow aluminum profile end plate design can ensure the same The strength of aluminum plates under equal volume conditions can also reduce material weight and cost, and increase module energy density; through holes are opened on the side panels to increase module energy density, and the edging and supporting edges are respectively formed by die stamping and bending and convex bulge to increase the overall strength of the side panels; the collecting plate assembly is connected by a spliced ​​mortise and tenon structure, which can arbitrarily match the number of series and parallel cells, reduce the type of material design, and reduce costs. Insulating films are also fixed on the inner walls of the side panels and cover plates to ensure their safety performance. Holes are opened on the cover plate and the collecting plate, which are fixed with plastic rivets to reduce the type of materials and increase the overall energy density of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of an exploded structure of an embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of a side plate in one embodiment of the present invention;

[0025] Figure 4 is a structural schematic diagram of a plate collecting assembly in one embodiment of the present invention;

[0026] Figure 5 is a schematic structural diagram of a collecting plate in one embodiment of the present invention;

[0027] Figure 6 is a schematic diagram of the structure of connecting pole pieces in one embodiment of the present invention;

[0028] Figure 7 is a schematic structural diagram of a fixing base in one embodiment of the present invention;

[0029] Among them, 1. side panel, 101. through hole, 102. edging, 103. supporting edge, 104. third connecting hole, 2. cover plate, 201. second connecting hole, 3. battery cell, 4. end plate, 401. fourth connecting hole, 5. collecting plate assembly, 501. collecting plate, 502. wiring harness slot, 503. card block, 504. first connecting hole, 505. groove, 506. positioning block, 507. limiting groove, 6. fixing seat, 601. sixth connecting hole, 602. connecting seat, 7. insulating film, 8. high-density foam, 9. double-sided tape, 10. connecting pole piece, 11. fixing part, 1101. fifth connecting hole, 12. first rivet, 13. second rivet, 14. third rivet. DETAILED DESCRIPTION

[0030] The invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a spliced ​​battery module comprises two side plates 1, a plurality of battery cells 3 fixedly arranged between the two side plates 1 and a cover plate 2 fixedly arranged on the top of the two side plates 1, and also comprises end plates 4 fixedly arranged on the two ends of the side plates, the two ends of the two side plates 1 are respectively provided with a rim 102, the bottoms of the two side plates 1 are respectively provided with a support edge 103, the end plates 4 are respectively arranged at the two ends of the plurality of battery cells 3 and are fixedly arranged in the two side plates 1 through the rim 102 and the support edge 103, the tops of the plurality of battery cells 3 are provided with a collecting plate assembly 5 for fixing them, the collecting plate assembly 5 is provided with a connecting electrode sheet 10 for fixing it and for connecting the positive and negative electrodes of the plurality of battery cells 3, the two ends of the collecting plate assembly 5 are also respectively fixedly provided with fixing members 11, the two end plates 4 are respectively fixedly provided with a pole fixing seat 6, the collecting plate assembly 5 is respectively fixedly connected to the fixing seat 6 through the fixing member 11 and fixedly connected to the two end plates 4, and the cover plate 2 is fixedly arranged on the collecting plate assembly 5.

[0032] The collecting plate assembly 5 is formed by a plurality of collecting plates 501 respectively fixed on the battery cells 3 and fixed by mortise and tenon joints.

[0033] The two ends of the collecting plate 501 are respectively provided with grooves 505 for clamping the battery cell 3, and the periphery of the groove 505 is provided with a clamping block 503 for fixing the connecting electrode 10, and the two sides of the collecting plate 501 are respectively provided with a positioning block 506 and a limiting groove 507 for mortise and tenon splicing. The collecting plate assembly 5 adopts a spliced ​​mortise and tenon structure connection, which can arbitrarily match the number of series and parallel of the battery cells 3, reduce the types of material design, and reduce costs.

[0034] The collecting plate 501 is also provided with a harness slot 502 and a first connecting hole 504 for fixing the wiring.

[0035] Therein, a plurality of second connection holes 201 are evenly distributed on the cover plate 2 .

[0036] The cover plate 2 is fixedly connected to the collecting plate 501 by the first rivet 12 passing through the second connecting hole 201 and the first connecting hole 504 respectively.

[0037] Wherein, the first rivet 12 is a plastic rivet.

[0038] The two adjacent battery cells 3 are fixedly connected by double-sided adhesive tape 9. The two adjacent battery cells 3 are fixedly connected by double-sided adhesive tape 9, which can save the time of structural adhesive drying compared with the existing gluing technology, improve the consistency of product production, and reduce the time efficiency of its production process.

[0039] The two side panels 1 are provided with a plurality of through holes 101 for heat dissipation of the battery core 3, and the inner side walls of the side panels 1 and the cover plate 2 are respectively fixed with insulating films 7. The side panels 1 are provided with through holes 101 to improve the energy density of the module, and the edge wrapping 102 and the supporting edge 103 are respectively in the form of die stamping bending and convex hulling to improve the overall strength of the side panels 1.

[0040] The edge 102 is provided with a plurality of evenly distributed third connection holes 104 .

[0041] The two end plates 4 are respectively provided with a plurality of evenly distributed fourth connection holes 401, and the side walls of the two end plates 4 are respectively fixed with high-density foam 8 to reserve swelling space for the battery cell 3 so that there is enough effective space between the battery cell 3 and the end plate 4, thereby ensuring its safety.

[0042] The two end plates 4 are respectively fixedly connected to the edge 102 through the second rivet 13 and the third connection hole 104 and the fourth connection hole 401 and are arranged in the two side plates 1. The end plates 4 adopt triangular hollow aluminum profile technology. The triangular aluminum profile can not only ensure the overall fixing strength of the module, but also ensure the breathing effect of the battery cell 3 in the module, reducing the internal pressure of the battery cell 3; the hollow aluminum profile end plate 4 design can not only ensure the strength of the aluminum plate under the same volume, but also reduce the material weight and cost, and improve the module energy density.

[0043] The pole fixing seat 6 is provided with at least two sixth connection holes 601 , and the bottom of the pole fixing seat 6 is also provided with a connection seat 602 for fixing and connecting the end plate 4 .

[0044] The fixing member 11 is an “L”-shaped fixing member, and a fifth connecting hole 1101 is also provided on the fixing member 11 .

[0045] The fixing member 11 is fixedly connected to the pole fixing seat 6 through the fifth connection hole 1101 and the sixth connection hole 601 respectively via the third rivet 14. The L-shaped fixing member 11 is fixedly connected to the pole fixing seat 6 through the fifth connection hole 1101 and the sixth connection hole 601, and the other end is fixedly connected to the collecting plate assembly 5, which can increase the firmness and prevent slippage.

[0046] In summary, the present invention not only has high stability, but also reduces the time required for the splicing production process, is highly efficient, and has low cost, and its safety performance is also guaranteed.

[0047] For those skilled in the art, various other corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A spliced ​​battery module, comprising two side plates (1), a plurality of battery cells (3) fixedly arranged between the two side plates (1), and a cover plate (2) fixedly arranged on the top of the two side plates (1), characterized in that: The battery pack also includes end plates (4) fixedly arranged at both ends of the side plates, the two ends of the two side plates (1) are respectively provided with a rim (102), the bottoms of the two side plates (1) are respectively provided with a support edge (103), the end plates (4) are respectively arranged at both ends of the plurality of battery cells (3) and are fixedly arranged in the two side plates (1) via the rim (102) and the support edge (103), the tops of the plurality of battery cells (3) are provided with a collecting plate assembly (5) for fixing them, and the collecting plate assembly The assembly (5) is provided with connecting pole pieces (10) for fixing it and for connecting the positive and negative poles of the plurality of battery cells (3); fixing pieces (11) are respectively fixedly provided at both ends of the assembly (5); pole fixing seats (6) are respectively fixedly provided on the two end plates (4); the assembly (5) is respectively fixedly connected to the fixing seats (6) via the fixing pieces (11) and fixedly connected to the two end plates (4); and the cover plate (2) is fixedly provided on the assembly (5); The collecting plate assembly (5) is formed by a plurality of collecting plates (501) respectively fixed on the battery cells (3) and fixed by mortise and tenon joints; The two ends of the collecting plate (501) are respectively provided with grooves (505) for clamping the battery core (3), and the periphery of the groove (505) is provided with a clamping block (503) for fixing the connecting electrode (10), and the two sides of the collecting plate (501) are respectively provided with a positioning block (506) and a limiting groove (507) for mortise and tenon jointing them. The collecting plate (501) is also provided with a wiring harness slot (502) and a first connecting hole (504) for fixing the wiring. The cover plate (2) is evenly distributed with a plurality of second connection holes (201); The cover plate (2) is fixedly connected to the collecting plate (501) by passing through the second connecting hole (201) and the first connecting hole (504) via the first rivet (12); The two side plates (1) are provided with a plurality of through holes (101) for heat dissipation of the battery core (3), and insulating films (7) are fixedly provided on the inner side walls of the side plates (1) and the cover plate (2), respectively; The edge (102) is respectively provided with a plurality of evenly distributed third connection holes (104); The two end plates (4) are respectively provided with a plurality of evenly distributed fourth connection holes (401), and the side walls of the two end plates (4) are respectively fixed with high-density foam (8); The two end plates (4) are respectively fixedly connected to the edge wrapping (102) through the second rivet (13) passing through the third connection hole (104) and the fourth connection hole (401) and are arranged inside the two side plates (1); At least two sixth connection holes (601) are respectively provided on the pole fixing seat (6), and a connection seat (602) for fixing and connecting the end plate (4) is also respectively provided at the bottom of the pole fixing seat (6); The fixing member (11) is an "L"-shaped fixing member, and the fixing member (11) is also provided with a fifth connecting hole (1101); The fixing member (11) is fixedly connected to the pole fixing seat (6) by passing through the fifth connecting hole (1101) and the sixth connecting hole (601) via the third rivet (14).

2. A spliced ​​battery module according to claim 1, characterized in that: The first rivet (12) is a plastic rivet.

3. A spliced ​​battery module according to claim 1, characterized in that: Two adjacent battery cells (3) are fixedly connected by double-sided adhesive tape (9).

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