Integrated busbar and soft package module

Abstract

The utility model discloses an integrated busbar and a soft package module, the integrated busbar comprises a uniform temperature plate and an integrated piece arranged on the upper end face of the uniform temperature plate, and the integrated piece comprises a heating film and two sampling FPCs distributed on the left and right sides of the heating film; the device has the advantages that the heating film and the sampling FPC are integrated, the production efficiency can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of power batteries, and in particular relates to an integrated busbar and a soft package module. Background Art

[0002] With the popularity of electric vehicles, electric vehicles are used in more and more environments, such as low-temperature environments. As the power source of electric vehicles, in order to improve the adaptability of soft-pack modules to low-temperature environments, combined with the actual use conditions of the vehicle, and taking into account the requirements of cost reduction and lightweight of the vehicle, the market currently mostly adopts the method of installing a heating film on the top of the soft-pack module to make the soft-pack module work at a suitable temperature to meet the energy output and power output of the vehicle.

[0003] Conventionally, a sampling FPC is also provided on the ear side of the soft package module. There are many parts and the assembly process is relatively complicated, resulting in low production efficiency and not conducive to controlling production costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an integrated busbar and soft package module, which integrates the heating film and the sampling FPC, thereby helping to improve production efficiency and reduce production costs.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: an integrated busbar, including a temperature averaging plate and an integrated component arranged on the upper end surface of the temperature averaging plate, the integrated component including a heating film and two sampling FPCs distributed on the left and right sides of the heating film.

[0006] Preferably, the integrated component includes a lower insulating layer, a wiring layer and an upper insulating layer distributed from bottom to top, a heating element and two FPC bodies distributed on the left and right sides of the heating element are arranged in the wiring layer, and the FPC body is connected to a plurality of sampling terminals extending out of the wiring layer.

[0007] Preferably, both the lower insulating layer and the upper insulating layer are made of PI film.

[0008] Preferably, the heating element is a heating wire.

[0009] And a soft package module, comprising a battery cell group consisting of multiple battery cell monomers, end plates are respectively arranged on the front and rear sides of the battery cell group, a plurality of bus bars are respectively arranged on the left and right sides of the battery cell group, the pole ears of the battery cell monomers are connected to the bus bars, the upper end of the battery cell group is provided with the above-mentioned integrated bus bar, the temperature balancing plate is bonded to the upper end surfaces of all the battery cell monomers by means of a heat-conducting structural adhesive, the sampling terminals correspond to the bus bars one by one, and the sampling terminals are connected to the corresponding bus bars.

[0010] Preferably, an extension plate extending toward the direction of the battery cell group is integrally provided at the upper end of the busbar, and the sampling terminal is fixed to the upper end surface of the extension plate by welding.

[0011] Preferably, the upper end surface of the end plate is recessed downward to form a mounting groove, which runs through the front and rear sides of the end plate. The front and rear sides of the heating film are provided with lugs extending into the mounting grooves, and the other end of the lug is connected to a connector for connecting to a power supply line.

[0012] Preferably, two positioning pins are fixedly arranged at the bottom of the installation slot, and two waist-shaped holes are arranged on the lug, the two waist-shaped holes correspond to the two positioning pins one by one, and the positioning pins pass through the corresponding waist-shaped holes.

[0013] Preferably, a slot is provided on one side of the end plate facing the battery cell group, the upper end of the slot passes through the upper end surface of the end plate, and connecting plates are respectively provided on the front and rear sides of the temperature equalizing plate, and the connecting plates extend into the slot.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] 1. This technical solution integrates the heating film and the sampling FPC to form an integrated component. Compared with the heating film and the sampling FPC that are separately set, there are fewer parts, which helps to simplify the assembly process, thereby improving production efficiency and reducing production costs;

[0016] 2. After the heating film is integrated with the sampling FPC, the width of the heating film along the left and right directions is narrow. By setting up a temperature equalizing plate, the heat generated by the heating film is transferred to the battery cell group through the temperature equalizing plate, which helps to ensure the uniformity of heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the integrated busbar in the utility model;

[0018] Figure 2 Schematic diagram of the explosion structure of the integrated busbar in the utility model

[0019] Figure 3 It is a top view of the integrated busbar in the utility model;

[0020] Figure 4 It is a partial cross-sectional schematic diagram of the integrated component in the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the soft package module in the utility model;

[0022] Figure 6 This is a schematic diagram of the explosion structure of the soft package module in the utility model;

[0023] Figure 7 for Figure 5 The enlarged schematic diagram of point A in the middle;

[0024] Figure 8 for Figure 5 The enlarged schematic diagram of point B in the middle;

[0025] Fig. 9 for Figure 6 Enlarged schematic diagram of point C in the middle.

[0026] In the figure: 1. Temperature averaging board; 11. Snap-in board; 2. Integrated component; 21. Heating film; 22. Sampling FPC; 23. Lower insulating layer; 24. Wiring layer; 25. Upper insulating layer; 26. Heater; 27. FPC body; 28. Sampling terminal; 29. ​​Lug; 291. Waist-shaped hole; 3. Battery cell group; 31. Battery cell; 311. Ear; 4. End plate; 41. Mounting slot; 411. Positioning pin; 42. Snap-in slot; 5. Bus bar; 51. Extension plate; 6. Thermal conductive structural adhesive. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] Embodiment 1: Figures 1 to 4 As shown, an integrated busbar includes a temperature averaging plate 1 and an integrated component 2 arranged on the upper end surface of the temperature averaging plate 1, wherein the integrated component 2 includes a heating film 21 and two sampling FPCs 22 distributed on the left and right sides of the heating film 21.

[0030] In this embodiment, the integrated component 2 includes a lower insulating layer 23, a wiring layer 24 and an upper insulating layer 25 distributed from bottom to top, a heating element 26 and two FPC bodies 27 distributed on the left and right sides of the heating element 26 are arranged in the wiring layer 24, and the FPC body 27 is connected to a plurality of sampling terminals 28 extending out of the wiring layer 24. Preferably, the lower insulating layer 23 and the upper insulating layer 25 are both made of PI film, the heating element 26 is made of heating wire, and the sampling terminal 28 is made of nickel sheet.

[0031] It should be noted that the processing technology of the heating film 21 and the sampling FPC 22 is the same, and the materials used are basically the same. During processing, two larger PI films, an FPC body 27 connected with a number of sampling terminals 28, and a heating wire are taken, and the PI film is covered on the upper and lower sides of the FPC body 27 and the heating wire, and then hot-pressed to obtain an integrated component 2. The middle area of ​​the integrated component 2 forms the heating film 21, and the areas on the left and right sides of the integrated component 2 form the sampling FPC 22. The integration is relatively high and can be completed in one workstation, which helps to simplify the assembly process and facilitate management and control, thereby improving production efficiency and reducing production costs.

[0032] In addition, the area of ​​the PI film is smaller after integration and the cost of components is lower.

[0033] Embodiment 2: Figure 5 and Figure 7 As shown, a soft package module includes a battery group 3 composed of multiple battery cells 31, end plates 4 are respectively provided on the front and rear sides of the battery group 3, and a plurality of busbars 5 are respectively provided on the left and right sides of the battery group 3. The tabs 311 of the battery cell 31 are connected to the busbars 5. The upper end of the battery group 3 is provided with the integrated busbar disclosed in the first embodiment, and the temperature averaging plate 1 is bonded to the upper end surfaces of all the battery cell monomers 31 by a heat-conducting structural adhesive 6. The sampling terminals 28 correspond to the busbars 5 one by one, and the sampling terminals 28 are connected to the corresponding busbars 5. Among them, the temperature averaging plate 1 adopts a heat-conducting metal plate, which has a heat-conducting function and also helps to improve the overall structural strength.

[0034] The conventional sampling FPC22 is set on the side of the battery cell group 3 and needs to be completed before the module is put into the box. In this structure, the integrated component 2 is set at the upper end of the battery cell group 3. During assembly, the battery cell group 3 and the end plate 4 can be put into the box first, and then the sampling FPC22 can be welded to avoid the risk of the sampling FPC22 being pulled off or torn when it is compressed and the clamping force is released during the box entry process. It has better safety and helps to improve the yield.

[0035] In this embodiment, an extension plate 51 extending toward the direction of the battery cell group 3 is integrally provided at the upper end of the busbar 5, and the sampling terminal 28 is welded and fixed to the upper end surface of the extension plate 51. By providing the extension plate 51, it is convenient to connect the sampling terminal 28 to the busbar 5 from top to bottom, thereby facilitating the welding operation.

[0036] Embodiment 3: Figure 8 and Fig. 9As shown, the rest of the parts are the same as those in Example 2, except that the upper end surface of the end plate 4 is recessed downward to form a mounting groove 41, and the mounting groove 41 runs through the front and rear sides of the end plate 4, and the front and rear sides of the heating film 21 are provided with lugs 29 extending into the mounting groove 41, and the other end of the lug 29 is connected to a connector for connecting to a power supply line, and the mounting groove 41 cooperates with the lug 29, which makes it convenient for the staff to assemble the integrated component 2 according to the specified position, thereby helping to improve the assembly efficiency.

[0037] In this embodiment, two positioning pins 411 are fixedly set at the bottom of the installation groove 41, and two waist-shaped holes 291 are set on the lug 29. The two waist-shaped holes 291 correspond to the two positioning pins 411 one by one. The positioning pins 411 pass through the corresponding waist-shaped holes 291. The positioning pins 411 play a positioning role, and the waist-shaped holes 291 help to absorb the expansion changes of the battery module during use.

[0038] In this embodiment, a card slot 42 is provided on the side of the end plate 4 facing the battery cell group 3, and the upper end of the card slot 42 passes through the upper end surface of the end plate 4. The front and rear sides of the temperature averaging plate 1 are respectively provided with card connecting plates 11, which extend into the card slot 42. The card connecting plates 11 cooperate with the card slot 42, which makes it convenient for the staff to assemble the temperature averaging plate 1 according to the specified position, thereby helping to improve the assembly efficiency.

[0039] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An integrated busbar, characterized in that It comprises a temperature averaging plate (1) and an integrated component (2) arranged on the upper end surface of the temperature averaging plate (1), wherein the integrated component (2) comprises a heating film (21) and two sampling FPCs (22) distributed on the left and right sides of the heating film (21).

2. The integrated busbar according to claim 1, characterized in that The integrated component (2) comprises a lower insulating layer (23), a wiring layer (24) and an upper insulating layer (25) which are arranged from bottom to top; a heating element (26) and two FPC bodies (27) arranged on the left and right sides of the heating element (26) are arranged in the wiring layer (24); and the FPC body (27) is connected to a plurality of sampling terminals (28) extending out of the wiring layer (24).

3. An integrated busbar according to claim 2, characterized in that The lower insulating layer (23) and the upper insulating layer (25) are both made of PI film.

4. The integrated busbar according to claim 2, characterized in that The heating element (26) is a heating wire.

5. A soft package module, comprising a battery cell group (3) composed of a plurality of battery cell monomers (31), the front and rear sides of the battery cell group (3) are respectively provided with end plates (4), the left and right sides of the battery cell group (3) are respectively provided with a plurality of busbars (5), the pole ears (311) of the battery cell monomers (31) are connected to the busbars (5), characterized in that The upper end of the battery cell group (3) is provided with an integrated busbar as claimed in any one of claims 2 to 4, the temperature equalizing plate (1) is bonded to the upper end surfaces of all the battery cell monomers (31) by means of a thermally conductive structural adhesive (6), the sampling terminals (28) correspond to the busbars (5) one by one, and the sampling terminals (28) are connected to the corresponding busbars (5).

6. The soft package module according to claim 5, characterized in that An extension plate (51) extending in the direction of the battery cell group (3) is integrally provided at the upper end of the busbar (5), and the sampling terminal (28) is fixed to the upper end surface of the extension plate (51) by welding.

7. The soft package module according to claim 5, characterized in that The upper end surface of the end plate (4) is recessed downward to form a mounting groove (41), and the mounting groove (41) runs through the front and rear sides of the end plate (4). The front and rear sides of the heating film (21) are provided with lugs (29) extending into the mounting groove (41), and the other end of the lug (29) is connected to a connector, and the connector is used to connect to a power supply line.

8. The soft package module according to claim 7, characterized in that Two positioning pins (411) are fixedly arranged at the bottom of the installation slot (41), and two waist-shaped holes (291) are arranged on the lug (29), the two waist-shaped holes (291) correspond to the two positioning pins (411) one by one, and the positioning pins (411) pass through the corresponding waist-shaped holes (291).

9. The soft package module according to claim 5, characterized in that A card slot (42) is provided on one side of the end plate (4) facing the battery cell group (3), the upper end of the card slot (42) passes through the upper end surface of the end plate (4), and a card connection plate (11) is provided on the front and rear sides of the temperature equalizing plate (1), respectively, and the card connection plate (11) extends into the card slot (42).

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