Battery module integrated cover

Abstract

The utility model discloses a battery module integration cover in the technical field of new energy, which comprises a cover plate assembly arranged on a battery module, and the cover plate assembly comprises a wire harness isolation plate, a connecting aluminum bar and an FPC (flexible printed circuit) acquisition plate which are arranged on a battery cell group in a covering manner. A plurality of anti-explosion avoiding grooves corresponding to the battery cell groups and a plurality of groups of electrode avoiding grooves arranged in pairs are formed in the wire harness isolation plate. The battery module integrated cover disclosed by the utility model has excellent length compatibility, mounting convenience and structural stability, is convenient to adapt to battery modules with various specifications and lengths, and is provided with an anti-explosion avoiding structure and a fire-fighting sensing line storage structure, so that the safety of equipment is effectively improved. The cantilever structure of the FPC acquisition board increases the flexure resistance and the folding resistance, and the double-fuse structure increases the safety and the after-sales convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and in particular to a battery module integrated cover. Background Art

[0002] The battery pack case includes a shell, and a plurality of charging modules arranged in the shell. The charging module includes a battery cell group, which includes a plurality of assembled battery cells, and the battery cell group is combined by end plates and cable ties, and a support plate and an integrated cover are respectively arranged at the bottom and the top to form a charging module. As the demand for the energy density of battery modules in electrical devices becomes higher and higher, the current battery modules can no longer fully meet the energy requirements of electrical devices. Therefore, in order to meet the energy requirements of electrical devices, it is usually adopted to increase the volume of single battery modules. However, if the volume of a single battery module is too large, it will cause the structural strength of the single battery module to be difficult to meet the mechanical performance requirements. In addition, the method of increasing the number of battery modules can also be adopted. However, multiple battery modules need to be produced and combined together during production, and the manufacturability is poor.

[0003] The existing technology has several main disadvantages:

[0004] First, the length of the integrated cover is limited. The existing technology requires adjusting the length of the integrated cover according to the number of cells in the battery module, and then needs to open molds according to different sizes and models, resulting in high production costs and poor product adaptability of the cover.

[0005] Second, in the prior art, safety performance is an important indicator during the use of battery modules. When the battery module is in use, the battery cells may explode and leak due to heating or short circuits caused by long-term operation. The integrated cover of the existing battery module does not have an explosion-proof and air-proof structure for the battery. After the battery leaks, due to limited space, the leaked liquid will spread to the adjacent batteries and affect the battery cells of the battery module, causing safety risks.

[0006] Third, it is not convenient to install the FPC (flexible printed circuit) board on the integrated cover in the prior art, and the cover structure in the prior art does not reserve the installation position of the fire sensor line, which is not conducive to the limited installation of the fire sensor line. Summary of the invention

[0007] The utility model overcomes the shortcomings of the prior art and provides a battery module integrated cover with excellent length compatibility, installation convenience and structural stability, which is convenient for adapting to battery modules of various specifications and lengths, and the explosion-proof avoidance structure and fire sensor line storage structure are set to effectively improve the safety of the equipment. The cantilever structure of the FPC acquisition board increases the bending resistance and folding resistance.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a battery module integrated cover, including a cover plate assembly arranged on the battery module, the cover plate assembly includes a wiring harness isolation plate, a connecting aluminum bus and an FPC collection plate covering the battery cell group in the battery module; the wiring harness isolation plate includes a plate body corresponding to the battery cell group, and the plate body is provided with a plurality of explosion-proof avoidance grooves corresponding to the battery cell group, as well as a plurality of electrode avoidance grooves arranged in pairs.

[0009] In a preferred embodiment of the utility model, each section corresponding to the width of the plate body and the battery cell is used as a section, and each section is respectively provided with an explosion-proof avoidance groove and an electrode avoidance groove corresponding to the battery cell; a micro-connection structure is provided between several adjacent sections.

[0010] In a preferred embodiment of the utility model, an explosion-proof escape valve is also provided in the explosion-proof escape groove.

[0011] In a preferred embodiment of the utility model, the avoidance explosion-proof valve includes an explosion-proof bracket arranged across the electrode avoidance groove.

[0012] In a preferred embodiment of the utility model, a limiting groove for receiving the fire sensor line is arranged on the explosion-proof bracket, and a mounting beam is also arranged on the explosion-proof bracket.

[0013] In a preferred embodiment of the utility model, the plate body includes an explosion-proof setting area, and battery cell corresponding areas located on both sides of the explosion-proof setting area; explosion-proof avoidance grooves corresponding to the battery cells in the battery cell group are arranged in the explosion-proof setting area; electrode avoidance grooves corresponding to the electrodes of the battery cells in the battery cell group are arranged in the battery cell corresponding area.

[0014] In a preferred embodiment of the utility model, the top plate of the charging module can be installed on the wiring harness isolation plate, and the battery cell corresponding area and the explosion-proof setting area are reserved between the top plate and the cover plate.

[0015] In a preferred embodiment of the present invention, a plurality of connecting aluminum bars for connecting the battery cells in the battery cell group in series are arranged in the battery cell corresponding area.

[0016] In a preferred embodiment of the utility model, an FPC acquisition board is housed in the explosion-proof setting area, and a cantilever extending outward is supported on the FPC acquisition board. The cantilever is electrically connected to the connecting aluminum bus connected to the corresponding battery cell through a metal sheet, and a through groove corresponding to the explosion-proof avoidance groove is reserved on the FPC acquisition board.

[0017] In a preferred embodiment of the utility model, a fuse 1 connected in series with the circuit access end is arranged on the FPC acquisition board, and a fuse 2 is arranged in parallel on one side of the fuse 1, and one end of the fuse 2 is connected to one end of the fuse 1, and the other end of the fuse 2 is adjacent to the other end of the fuse 1 and are respectively provided with solder points for convenient electrical connection.

[0018] In a preferred embodiment of the utility model, a plurality of positioning posts, limiting buckles and mounting screw holes are arranged on the wiring harness isolation plate.

[0019] The utility model solves the defects existing in the technical background, and the beneficial technical effects of the utility model are:

[0020] The utility model provides a battery module integrated cover, which has excellent length compatibility, installation convenience and structural stability, and is easy to adapt to battery modules of various specifications and lengths. The explosion-proof avoidance structure and fire sensor line storage structure are set up to effectively improve the safety of the equipment.

[0021] 1. The wiring harness isolation plate of the cover assembly is provided with explosion-proof avoidance grooves corresponding to the battery cell group, which effectively reduces the potential safety hazard caused by the leakage of liquid from the battery cell during use due to limited space. The setting of the explosion-proof avoidance groove is conducive to the leakage of liquid from the set explosion-proof avoidance groove, reducing the risk of the leakage of liquid spreading to other batteries. The electrode avoidance grooves set on the wiring harness isolation plate are convenient for the installation and connection of the battery cell and FPC collection board and the connecting aluminum bar in the later battery module.

[0022] 2. A micro-connection structure is provided on the plate body of the wiring harness isolation plate. The micro-connection structure improves the product adaptability of the wiring harness isolation plate. It can be cut according to the micro-connection structure according to the needs of use, and can also be combined and reused through the cut structure to adapt to battery cell groups containing different numbers of battery cells.

[0023] 3. The explosion-proof bracket installed on the explosion-proof avoidance groove can assist in supporting the top plate; and the limit grooves installed on the explosion-proof bracket can be arranged in a straight line on the explosion-proof setting area of ​​the harness isolation plate, which is convenient for limiting the storage of the fire sensor wires in the battery module. At the same time, the explosion-proof bracket is also provided with a mounting beam that is arranged crosswise with the laying track of the fire sensor wire, so that the fire sensor wire can be limited to the mounting beam by using a tie.

[0024] 4. The cantilever structure of the FPC acquisition board increases its bending resistance and folding resistance. The cantilever structure set on the FPC acquisition board is connected to the electrodes of the battery cell group through a metal sheet, which improves the stability of the FPC acquisition board and effectively prevents the FPC acquisition board from being mechanically damaged due to displacement under the action of external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the axial structure of the cover plate assembly of the embodiment of the utility model arranged on the battery module;

[0027] Figure 2This is a schematic diagram of the axial structure of the wiring harness isolation plate, FPC collection plate, and connecting aluminum bar installed on the battery module of the embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of the top view of the structure of the wiring harness isolation plate, FPC collection plate, and connecting aluminum bar installed on the battery module of the embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the axial structure of the wiring harness isolation plate and the FPC acquisition board of the embodiment of the utility model installed on the battery module;

[0030] Figure 5 It is a bottom view structural schematic diagram of the cover plate assembly in the embodiment of the utility model;

[0031] Figure 6 It is a schematic diagram of the axial structure of the FPC collection board and the connecting aluminum bar arranged on the wiring harness isolation board in the embodiment of the utility model;

[0032] Figure 7 The axial structure diagram of the wiring harness isolation plate in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0033] Figure 8 The axial structure diagram of the wiring harness isolation plate in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0034] Fig. 9 The axial structure diagram of the wiring harness isolation plate in the embodiment of the utility model is shown in FIG. Figure 3 ;

[0035] Fig.10 It is a schematic diagram of the axial structure of the FPC acquisition board in the embodiment of the utility model;

[0036] Fig.11 It is a schematic diagram of a top view of a structure in which a metal sheet is connected to the cantilever of the FPC collection board in the embodiment of the utility model;

[0037] Among them, 1-battery module, 11-battery cell group, 111-electrode, 2-cover assembly, 21-wiring harness isolation plate, 211-micro-connection structure, 212-plate body, 213-battery cell corresponding area, 214-electrode air avoidance groove, 215-explosion-proof setting area, 216-explosion-proof avoidance groove, 217-avoidance explosion-proof valve, 218-limiting groove, 219-mounting beam, 22-top plate, 31-connecting aluminum row one, 32-connecting aluminum row two, 4-FPC collection board, 41-cantilever, 5-metal sheet, 6-adapter, 71-positioning column, 72-limiting buckle, 73-mounting screw hole. DETAILED DESCRIPTION

[0038] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0039] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in the embodiments of the utility model, the directional indication is only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances. Embodiment 1

[0040] like Figure 1-Figure 11 As shown, a battery module integrated cover includes a cover assembly 2 arranged on a battery module 1 and covering a battery cell group 11 stored in the battery module 1, the cover assembly 2 includes a harness isolation plate 21 covered on the battery cell group 11, the harness isolation plate 21 includes at least one plate body 212 corresponding to the battery cell group 11, and the plate body 212 is provided with a plurality of explosion-proof avoidance grooves 216 corresponding to the battery cell group 11, and a plurality of electrode avoidance grooves 214 arranged in pairs. The size and quantity of the plate body 212 can be set according to actual needs. Each section of the plate body 212 corresponding to the single cell width of the battery cell is used as a section, and each section is respectively provided with an explosion-proof avoidance groove 216 and an electrode avoidance groove 214 corresponding to the battery cell; a micro-connection structure 211 is provided between adjacent sections. The micro-connection structure 211 improves the connection and assembly of the plate body 212 of the harness isolation plate 21, which facilitates improving the adaptability of the harness isolation plate 21 to the model of the battery module 1. The plate body 212 can be cut according to the micro-connection structure 211 according to the use requirements, and can also be assembled and spliced ​​through the cut structure to adapt to the battery cell group 11 containing different numbers of battery cells.

[0041] The plate body 212 includes an explosion-proof setting area 215 straddling multiple cells in the battery module 1, and a cell corresponding area 213 located on both sides of the explosion-proof setting area 215; an explosion-proof avoidance groove 216 corresponding to the cells in the cell group 11 is arranged in the explosion-proof setting area 215; an electrode avoidance groove 214 corresponding to the electrode 111 of the cell in the cell group 11 is arranged in the cell corresponding area 213. Each cell in the cell group 11 corresponds to at least one explosion-proof avoidance groove 216; each cell in the cell group 11 corresponds to at least one pair of electrode avoidance grooves 214. An avoidance explosion-proof valve 217 is also arranged in the explosion-proof avoidance groove 216. The avoidance explosion-proof valve 217 includes an explosion-proof bracket straddling the electrode avoidance groove 214. A limit groove 218 for accommodating a fire sensor line is arranged on the explosion-proof bracket, and a mounting beam 219 is also arranged on the explosion-proof bracket.

[0042] A plurality of connecting aluminum bars are arranged in the cell corresponding area 213. The connecting aluminum bars include connecting aluminum bar one 31 and connecting aluminum bar two 32. The connecting aluminum bar one 31 is used to connect the cells in the cell group 11 in series, and the connecting aluminum bar two 32 is used to connect the cells and the adapter 6. The explosion-proof setting area 215 accommodates the FPC acquisition board 4, and the FPC acquisition board 4 is supported by a cantilever 41 extending outward. The cantilever 41 is electrically connected to the connecting aluminum bar connected to the corresponding cell through the metal sheet 5, and a through groove corresponding to the explosion-proof avoidance groove 216 is reserved on the FPC acquisition board 4.

[0043] The harness isolation plate 21 is provided with a number of positioning posts 71, limiting buckles 72, and mounting screw holes 73. The positioning posts 71 can be arranged corresponding to the preset positioning holes on the FPC acquisition board 4, and are used to assist in positioning the FPC acquisition board 4, reduce the position deviation of the FPC acquisition board 4, and assist in the assembly of the FPC acquisition board 4. As shown in the figure, the limiting buckle 72 is used to limit the connection aluminum row 1 31 and the connection aluminum row 2 32 in the longitudinal direction. An upwardly protruding convex edge is provided on the outer edge of the harness isolation plate 21, and a mounting screw hole 73 is provided on the convex edge. The top cover is locked on the mounting screw hole 73 by fasteners, so that the top plate 22 covers the top of the harness isolation plate 21 and is assembled on the battery module 1. A battery cell corresponding area 213 and an explosion-proof setting area 215 are reserved between the top plate 22 and the cover plate. Embodiment 2

[0044] like Figure 1 to Figure 11As shown, on the basis of the first embodiment, according to the number of cells in the conventional battery module 1, a plate 212 that can cover multiple cells is used. This embodiment preferably uses a one-piece formed plate 212, the length of the plate 212 corresponds to the total length of the cells in the battery module 1, and each section on the plate 212 corresponding to the width of the cell is used as a section, and the sections on the plate 212 are arranged horizontally in a line. An explosion-proof avoidance groove 216 corresponding to the cell and a pair of electrode avoidance grooves 214 are respectively provided on each section, and a micro-connection structure 211 is provided between the dry sections, that is, the adjacent sections are connected by the micro-connection structure 211. The micro-connection structure 211 adopts a micro-connection broken groove. According to the number of cells in the conventional battery module 1, a micro-connection structure 211 is provided between the adjacent sections of the six sections after the seventh section of the plate 212. Embodiment 3

[0045] like Figure 1 to Figure 11 As shown, on the basis of Example 1 or Example 2, a fuse 1 connected in series with the circuit access end is arranged on the FPC acquisition board 4, and a fuse 2 is arranged in parallel on one side of the fuse 1, and one end of the fuse 2 is connected to one end of the fuse 1, and the other end of the fuse 2 is adjacent to the other end of the fuse 1 and respectively provided with solder joints for convenient electrical connection. Specifically, in actual use, if the fuse 1 is damaged and disconnected, the fuse 2 arranged in parallel on one side can be connected in parallel to the two ends of the fuse 1 to replace the original fuse 1 for protection. The use of a double fuse structure in the FPC acquisition board 4 increases safety and after-sales convenience.

[0046] Working principle of this utility model:

[0047] like Figure 1 to Figure 11As shown, when in use, the charging module harness isolation plate 21 of the corresponding size can be selected according to the model of the battery module 1, for example, according to the number of cells in the battery cell group 11 used in the battery module 1. The harness isolation plate 21 of the utility model is provided with a micro-connection structure 211, and the harness isolation plate 21 can be cut along the corresponding micro-connection structure 211 according to the needs of use to adapt to the length of the battery cell group 11. If the size is short, the section cut off from another harness isolation plate 21 can be installed on the battery cell group 11 to fill in the gap. The installation adaptability of the charging module harness isolation plate 21 is improved. Then, the FPC acquisition board 4 is placed in the explosion-proof setting area 215 of the harness isolation plate 21, and the positioning column 71 is correspondingly penetrated with the preset positioning hole on the FPC acquisition board 4 to assist in positioning the FPC acquisition board 4 and reduce the position deviation of the FPC acquisition board 4. Then, multiple metal sheets 5 are respectively connected to the cantilever 41 of the FPC acquisition board 4. Multiple electric sheets 1 are used to connect the cells in the battery cell group 11 in series to the connecting aluminum row 1 31, and the metal sheet 5 connects the cantilever 41 of the FPC acquisition board 4 and the connecting aluminum row 1 31. The connecting aluminum row 2 32 is used to connect the battery cell and the adapter 6. Finally, the top cover is set on the wiring harness isolation plate 21 and combined with the battery module 1 into one.

[0048] The above specific implementation methods are specific support for the scheme idea proposed in the utility model, and cannot be used to limit the protection scope of the utility model. Any equivalent changes or equivalent modifications made on the basis of the technical scheme in accordance with the technical idea proposed in the utility model still fall within the scope of protection of the technical scheme of the utility model.

Claims

1. A battery module integrated cover, comprising a cover plate assembly arranged on a battery module, characterized in that: The cover plate assembly includes a wiring harness isolation plate, a connecting aluminum bar and an FPC collection plate covering the battery cell group in the battery module; the wiring harness isolation plate includes a plate body corresponding to the battery cell group, and the plate body is provided with a plurality of explosion-proof avoidance grooves corresponding to the battery cell group, and a plurality of electrode avoidance grooves arranged in pairs.

2. The battery module integrated cover according to claim 1, characterized in that: Each section of the plate body corresponding to the single body width of the battery cell is a section, and each section is respectively provided with an explosion-proof avoidance groove and an electrode avoidance groove corresponding to the battery cell; a micro-connection structure is provided between several adjacent sections.

3. The battery module integrated cover according to claim 1, characterized in that: An explosion-proof avoidance valve is also arranged in the explosion-proof avoidance groove.

4. The battery module integrated cover according to claim 3, characterized in that: The avoidance explosion-proof valve comprises an explosion-proof bracket which is arranged across the electrode avoidance groove.

5. The battery module integrated cover according to claim 4, characterized in that: The explosion-proof bracket is provided with a limiting groove for accommodating the fire sensor line, and the explosion-proof bracket is also provided with a mounting beam.

6. The battery module integrated cover according to claim 5, characterized in that: The plate body includes an explosion-proof setting area and battery cell corresponding areas located on both sides of the explosion-proof setting area; the explosion-proof setting area is provided with the explosion-proof avoidance grooves corresponding to the battery cells in the battery cell group; the battery cell corresponding area is provided with the electrode avoidance grooves corresponding to the electrodes of the battery cells in the battery cell group.

7. The battery module integrated cover according to claim 6, characterized in that: The top plate of the charging module can be installed on the wiring harness isolation plate, and the battery cell corresponding area and explosion-proof setting area are reserved between the top plate and the cover plate.

8. The battery module integrated cover according to claim 6, characterized in that: A plurality of connecting aluminum bars for connecting the battery cells in the battery cell group in series are arranged in the battery cell corresponding area.

9. The battery module integrated cover according to claim 8, characterized in that: An FPC acquisition board is housed in the explosion-proof setting area, and a cantilever extending outward is supported on the FPC acquisition board. The cantilever is electrically connected to the corresponding connecting aluminum bus connected to the battery cell through a metal sheet, and a through groove corresponding to the explosion-proof avoidance groove is reserved on the FPC acquisition board.

10. The battery module integrated cover according to claim 1, characterized in that: The FPC acquisition board is provided with a fuse 1 connected in series with the circuit access end, and a fuse 2 is arranged in parallel on one side of the fuse 1, and one end of the fuse 2 is connected to one end of the fuse 1, and the other end of the fuse 2 is adjacent to the other end of the fuse 1 and are respectively provided with solder points for convenient electrical connection.

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