Soft package battery module

Abstract

The utility model relates to the technical field of soft package battery cells, in particular to a soft package battery module. In order to solve the problem that soft package battery cell tabs are easily pulled when an existing soft package battery box encounters strenuous vibration, the utility model provides a novel soft package battery module which comprises a module shell, a plurality of soft package battery cells and a plug base, the module shell comprises a front side plate, a rear side plate, a left side plate, a right side plate, a top plate, a bottom plate and a cover plate, the cover plate is vertically fixed in the square space, the plurality of soft package battery cells are clamped between the cover plate and the left side plate, a partition plate is arranged between every two adjacent soft package battery cells, a flame-retardant damping plate is clamped between each partition plate and the side surface of the corresponding soft package battery cell, a plurality of lower insertion plate holes matched with the bottom end parts of the partition plates are formed in the bottom plate, and a plurality of lower insertion plate holes matched with the bottom end parts of the partition plates are formed in the bottom plate. The top plate is provided with a plurality of upper insertion plate holes matched with the top ends of the partition plates. The soft package battery module is low in manufacturing cost, simple and ingenious in structure, high in practicability and wide in applicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to soft package battery cell technical field, concretely is a kind of soft package battery module. BACKGROUND

[0002] In recent years, energy storage technology is concerned, and the development of energy storage technology will largely determine the development level of new energy, and the performance of battery box as the bottom core unit of energy storage technology largely determines the performance of energy storage equipment. Soft package battery box is widely used due to its good safety, light weight, large capacity, small internal resistance, flexible design and other superior conditions.

[0003] The existing soft package battery box includes a box body and a plurality of soft package battery modules fixed inside the box body. Each soft package battery module includes a plurality of soft package battery cells arranged side by side in the front-rear direction and having their length direction arranged in the height direction, a module shell, a plug base, and a gasket. The bottom end of the plug base extends into the module shell and is connected to the tab of the soft package battery cell. The top end of the plug base is located above the top surface of the module shell. The lower stud extends out of the module shell through the gasket and is screwed into the nut, thereby fixing the plug base to the top surface of the module shell. The plug base is used to connect the high-voltage line plug. The soft package battery cells are fixed and flame-retardant and shock-absorbing by the flame-retardant shock-absorbing plate between adjacent soft package battery cells. However, the flame-retardant shock-absorbing plate is not rigidly fixed to the module shell, so when the soft package battery box is subjected to severe vibration due to external factors, the soft package battery cells are easily displaced, which may cause the battery cell tabs to be pulled, thereby causing the battery cell to self-ignite and causing the vehicle to explode. In addition, the high-voltage line plug must be inserted into the corresponding position direction. For example, the positive electrode of one soft package battery module and the negative electrode of the adjacent soft package battery module are connected by two high-voltage line plugs and high-voltage hard wire. However, in many cases, the assembly operator is not familiar with the soft package battery box, and it is easy to insert incorrectly, which may cause the soft package battery box to be unusable, and in severe cases, the soft package battery cells may be short-circuited and heated, causing the soft package battery box to explode. Therefore, the assembly operator of the soft package battery box requires a high level of skill. SUMMARY

[0004] The utility model provides a new soft package battery module to solve the problem that the existing soft package battery box is easily pulled to the soft package battery cell tab when subjected to severe vibration.

[0005] The utility model is implemented by the following technical solutions:

[0006] The application relates to a soft package battery module, which comprises a module shell, a plurality of soft package battery cells and plug bases, the module shell comprises a front side plate, a rear side plate, a left side plate, a right side plate, a top plate, a bottom plate and a cover plate, the front side plate, the rear side plate, the left side plate, the right side plate, the bottom plate and the top plate are fixedly connected to form a square space, the plurality of soft package battery cells are vertically arranged in the square space and are arranged side by side in the front-rear direction, the length direction of the plurality of soft package battery cells is arranged in the left-right direction, the cover plate is vertically fixed in the square space, a plurality of side plate holes for penetrating the tabs of the plurality of soft package battery cells are arranged on the cover plate, the plurality of soft package battery cells are clamped between the cover plate and the left side plate, a partition plate is arranged between every two adjacent soft package battery cells, a fire-retardant damping plate is clamped between each partition plate and the side surface of the corresponding soft package battery cell, a plurality of lower plug plate holes matched with the bottom ends of the plurality of partition plates are arranged on the bottom plate, a plurality of upper plug plate holes matched with the top ends of the plurality of partition plates are arranged on the top plate, the bottom ends of the two plug bases are arranged between the cover plate and the right side plate and are connected with the tabs of the corresponding soft package battery cells, the top ends of the two plug bases are arranged above the top plate, and the two plug bases are fixed to the top plate through the cooperation of lower penetrating bolts and nuts.

[0007] During use, the plurality of soft package battery modules are fixed in the box body of the soft package battery box and the bottom end surfaces of the partition plates are fixed to the inner bottom surface of the box body of the battery box to form the soft package battery box, when the soft package battery box vibrates, the soft package battery cells are easy to move, but due to the action of the partition plates, the soft package battery cells are small in movement range, the danger that the tabs of the soft package battery cells are easily pulled is effectively reduced; in addition, compared with the previous structure in which the length direction of the plurality of soft package battery cells is arranged in the height direction, the length direction of the plurality of soft package battery cells is arranged in the left-right direction, so that the height gravity center of the soft package battery box is reduced, when the soft package battery box is applied to a racing car, the influence of the inertia of the racing car on the tire grip force is reduced, so that the change of the tire grip force is relatively small during acceleration, deceleration and cornering, the control is more accurate, when the racing car turns, the reduction of the gravity center can reduce the influence of the centrifugal moment, thereby reducing the risk of rollover and making the driving more stable.

[0008] Further, each plug base is fixed to the top plate through four lower penetrating bolts and four nuts on the four corners of the plug base, the four lower penetrating bolts are composed of three high lower penetrating bolts and one low lower penetrating bolt, the top ends of the three high lower penetrating bolts are higher than the lowest point of the tail end of the high-voltage line plug when the high-voltage line plug is inserted into the plug base, the top end of the low lower penetrating bolt is lower than the lowest point of the tail end of the high-voltage line plug when the high-voltage line plug is inserted into the plug base, and the direction of the low lower penetrating bolt is the arrangement direction of the high-voltage line plug. The structure confirms the arrangement direction of the high-voltage line plug through the height difference between the high lower penetrating bolt and the low lower penetrating bolt, the assembly workers cannot insert the plug in the wrong direction (the high-voltage line plug cannot be inserted into the plug base when the assembly workers insert the plug in the wrong direction), so that the error rate of assembly is greatly reduced, thereby ensuring the safe production and assembly of the battery box.

[0009] Further, a gasket is arranged between the top end of the plug base and the top plate, further improving the stability of the overall structure.

[0010] Further, the top end of each partition plate is bonded to the corresponding upper insertion hole, and the bottom end of each partition plate is bonded to the corresponding lower insertion hole, so that the relative position of the partition plate and the module shell is more fixed, further improving the stability of the soft package battery module, further improving the stability of the soft package battery box, and when the partition plate is bonded to the upper insertion hole and the lower insertion hole, the soft package battery module is also fixed to the box.

[0011] Further, the front side plate and the rear side plate are both upwardly extended and fixed with connecting ears, facilitating connection with the box of the soft package battery box.

[0012] Further, the left and right sides of each connecting ear are both vertically fixed with vertical triangular pressing plates pressing on the top plate, further improving the structural stability of the finally assembled soft package battery box.

[0013] The soft package battery module has the advantages of low manufacturing cost, simple structure, ingenuity, strong practicability and wide applicability. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0016] Figure 1 It is the overall structure schematic diagram of the soft package battery module in the present application;

[0017] Figure 2 It is the exploded schematic view (three high and low through bolts and low through bolts are deleted) of Figure 1

[0018] Figure 3 It is the enlarged structure schematic view of A in Figure 2

[0019] Figure 4 It is the enlarged structure schematic view of A in Figure 2 ​​An enlarged structural schematic view at the middle B;

[0020] Figure 5 A structural schematic view of the soft package battery box.

[0021] In the figure: 1-box, 2-soft package battery module, 201-soft package battery cell, 202-plug base, 203-front side plate, 204-rear side plate, 205-left side plate, 206-right side plate, 207-top plate, 208-bottom plate, 209-cover plate, 210-baffle, 211-flame-retardant shock-absorbing plate, 212-upper plug plate hole, 213-lower plug plate hole, 214-side plate hole, 215-gasket, 216-high down-through bolt, 217-low down-through bolt, 218-nut, 219-connection lug, 220-vertical triangular clamp plate, 3-high voltage line plug. DETAILED DESCRIPTION

[0022] In order to enable the above objects, features and advantages of the present application to be more clearly understood, a further description will be made with reference to the embodiments thereof. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the description, it should be noted that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein; obviously, the examples in the specification are only some of the embodiments of the present application, not all the embodiments.

[0025] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] As Figures 1 to 5The soft package battery module comprises a module shell, a plurality of soft package battery cells 201, and a plug base 202. The module shell comprises a front side plate 203, a rear side plate 204, a left side plate 205, a right side plate 206, a top plate 207, a bottom plate 208, and a cover plate 209. The front side plate 203, the rear side plate 204, the left side plate 205, the right side plate 206, the bottom plate 208, and the top plate 207 are fixedly connected to form a square space. The plurality of soft package battery cells 201 are vertically arranged in the square space and are arranged side by side in the front-rear direction. The length direction of each soft package battery cell 201 is arranged in the left-right direction. The cover plate 209 is vertically fixed in the square space. The cover plate 209 is provided with a plurality of side plate holes 214 for penetrating the tabs of the plurality of soft package battery cells 201. The plurality of soft package battery cells 201 are clamped between the cover plate 209 and the left side plate 205. A partition plate 210 is arranged between adjacent two soft package battery cells 201. A fire-retardant damping plate 211 is clamped between each partition plate 210 and the side surface of the corresponding soft package battery cell 201. The bottom plate 208 is provided with a plurality of lower plug plate holes 213 adapted to the bottom end portions of the plurality of partition plates 210. The top plate 207 is provided with a plurality of upper plug plate holes 212 adapted to the top end portions of the plurality of partition plates 210. The bottom end portions of the two plug bases 202 extend between the cover plate 209 and the right side plate 206 and are connected to the tabs of the corresponding soft package battery cells 201. The top end portions of the two plug bases 202 are located above the top plate 207. The two plug bases 202 are fixed to the top plate 207 by means of lower penetrating bolts and nuts 218.

[0027] In use, the plurality of soft package battery modules 2 are fixed in the box body 1 of the soft package battery box, and the bottom end faces of the partition plates 210 are fixed to the inner bottom face of the box body 1 of the battery box, so as to form a soft package battery box. When the soft package battery box vibrates, the soft package battery cells 201 are easy to move, but due to the action of the partition plates 210, the soft package battery cells 201 are small in movement range, thereby effectively reducing the risk of the tabs of the soft package battery cells 201 being easily pulled. In addition, compared with the previous structure in which the length direction of the plurality of soft package battery cells 201 is arranged in the height direction, the length direction of the plurality of soft package battery cells 201 is arranged in the left-right direction, so that the height gravity center of the soft package battery box is lowered. When the soft package battery box is applied to a racing car, the influence of the inertia of the racing car on the tire grip force is reduced after the gravity center is lowered. Therefore, when the racing car accelerates, decelerates, and turns, the change of the tire grip force is relatively small, so that the operation is more accurate. When the racing car turns, the influence of the centrifugal moment is reduced by lowering the gravity center, thereby reducing the risk of rollover and making the driving more stable.

[0028] In the embodiment, the four lower through bolts of the plug base 202 are composed of three high through bolts 216 and one low through bolt 217, the top end of the three high through bolts 216 is higher than the lowest point of the tail end of the high-voltage plug 3 when the high-voltage plug 3 is inserted into the plug base 202, the top end of the low through bolt 217 is lower than the lowest point of the tail end of the high-voltage plug 3 when the high-voltage plug 3 is inserted into the plug base 202, and the direction of the low through bolt 217 is the arrangement direction of the high-voltage plug 3. The arrangement direction of the high-voltage plug 3 is determined by the height difference between the high through bolts 216 and the low through bolt 217, so that the assembly operator cannot insert the plug in the wrong direction (the high-voltage plug 3 cannot be inserted into the plug base 202 when the assembly operator inserts the plug in the wrong direction), thereby greatly reducing the error rate of assembly and ensuring the safe production and assembly of the battery box.

[0029] In the embodiment, a gasket 215 is arranged between the top end of the plug base 202 and the top plate 207, thereby further improving the stability of the overall structure.

[0030] In the embodiment, the top end of each partition plate 210 is bonded to the corresponding upper insertion hole, and the bottom end of each partition plate 210 is bonded to the corresponding lower insertion hole, so that the relative position of the partition plate 210 and the module shell is more fixed, thereby further improving the stability of the soft-pack battery module 2 and the stability of the soft-pack battery box, and when the partition plate 210 is bonded to the upper insertion hole and the lower insertion hole, the soft-pack battery module 2 is also fixed to the box 1.

[0031] In the embodiment, the front side plate 203 and the rear side plate 204 are both upwardly extended and fixed with a connecting lug 219, thereby facilitating the connection with the box 1 of the soft-pack battery box.

[0032] In the embodiment, the left and right sides of each connecting lug 219 are both vertically fixed with a vertical triangular pressing plate 220 pressing on the top plate 207, thereby further improving the structural stability of the finally assembled soft-pack battery box.

[0033] The above description is only a specific embodiment of the present application, and enables those skilled in the art to understand or implement the present application. Although the foregoing embodiments are described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not change the essence of the corresponding technical solutions, and should be covered by the protection scope of the claims.

Claims

1. A soft-pack battery module, characterized by, The module shell includes a front side plate (203), a rear side plate (204), a left side plate (205), a right side plate (206), a top plate (207), a bottom plate (208), and a cover plate (209). The front side plate (203), the rear side plate (204), the left side plate (205), the right side plate (206), the bottom plate (208), and the top plate (207) are fixedly connected to form a square space. A plurality of soft package battery cells (201) are vertically arranged in the square space and arranged side by side in the front-rear direction. The length direction of each soft package battery cell (201) is arranged in the left-right direction. The cover plate (209) is vertically fixed in the square space. The cover plate (209) is provided with a plurality of side plate holes (214) for penetrating the tabs of the plurality of soft package battery cells (201). The plurality of soft package battery cells (201) are clamped between the cover plate (209) and the left side plate (205). Adjacent two soft package battery cells (201) are provided with a partition plate (210) therebetween. Each partition plate (210) and the side surface of the corresponding soft package battery cell (201) are clamped with a flame-retardant damping plate (211) therebetween. The bottom plate (208) is provided with a plurality of lower insertion plate holes (213) adapted to the bottom end portions of the plurality of partition plates (210). The top plate (207) is provided with a plurality of upper insertion plate holes (212) adapted to the top end portions of the plurality of partition plates (210). The bottom end portions of the two plug bases (202) extend between the cover plate (209) and the right side plate (206) and are connected with the tabs of the corresponding soft package battery cells (201). The top end portions of the two plug bases (202) are located above the top plate (207). The two plug bases (202) are fixed to the top plate (207) by cooperation of the lower penetrating bolts and nuts (218) at the four corners of the plug base (202).

2. The soft-pack battery module of claim 1, wherein, Each plug base (202) is fixed to the top plate (207) by four lower penetrating bolts and four nuts (218) at the four corners of the plug base (202). The four lower penetrating bolts are composed of three high lower penetrating bolts (216) and one low lower penetrating bolt (217). The top end of the three high lower penetrating bolts (216) is higher than the lowest point of the tail end of the high-voltage line plug (3) when the high-voltage line plug (3) is inserted into the plug base (202). The top end of the low lower penetrating bolt (217) is lower than the lowest point of the tail end of the high-voltage line plug (3) when the high-voltage line plug (3) is inserted into the plug base (202). The direction of the low lower penetrating bolt (217) is the arrangement direction of the high-voltage line plug (3).

3. The soft-pack battery module of claim 2, wherein, A gasket (215) is further arranged between the top end portion of the plug base (202) and the top plate (207).

4. The soft-pack battery module of claim 3, wherein, The top end portion of each partition plate (210) is bonded to the corresponding upper insertion hole, and the bottom end portion of each partition plate (210) is bonded to the corresponding lower insertion hole.

5. The soft-pack battery module of claim 4, wherein, The front side plate (203) and the rear side plate (204) are both upwardly extended and fixed with a connecting lug (219).

6. The soft-pack battery module of claim 5, wherein, The left and right sides of each connecting lug (219) are both vertically fixed with a vertical triangular pressing plate (220) pressing on the top plate (207).

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