Battery pack

Abstract

The utility model provides a battery pack, which relates to the technical field of batteries and comprises a shell, a battery management system, a wire harness and a plurality of groups of battery cells, the battery cells are obliquely arranged in the shell, an accommodating space is formed between the battery cell positioned on the outer side and the shell, and the battery management system and the wire harness are arranged in the accommodating space. The battery cells are obliquely arranged after being stacked, so that the overall height is reduced, the battery cells are more friendly to arrangement of products with limited height space, and the battery cells are suitable for multiple scenes such as CTM and CTP and higher in universality. Other battery system parts, such as a BMS, a copper bar, a wire harness, an FPC, an NTC and the like, can be effectively arranged in an area formed between the battery cell stack and the shell, so that the shell can be used for fixing, and the space utilization rate can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially a battery pack. BACKGROUND

[0002] The current market's electric core stacking, battery module stacking mode is generally vertical arrangement or horizontal placement, and the vertical / horizontal arrangement of the electric core can cause the overall height of the module / battery pack to be relatively high, and the electric connection and communication connection wire harness is generally arranged on both sides or the top and bottom, considering that most of the connecting pieces are irregular structures, the conventional arrangement can easily waste more space, and part of the electric core arranged fixedly on the module or battery pack needs to increase the heat-conducting glue or structural glue, and the overall height is increased, and the application is proposed aiming at the above defects. SUMMARY

[0003] The utility model discloses a battery pack, through adjusting arrangement stacking angle, can reduce the height of battery system to a certain extent, and electric connection and communication connection structure can be arranged in the triangular area, and the space utilization is higher.

[0004] To solve the above problems, the utility model provides a battery pack, including shell, battery management system, wire harness and electric core, the electric core is provided with a plurality of groups and is arranged obliquely in the shell, and the electric core located on the outside forms an accommodating space with the shell, and the battery management system and the wire harness are arranged in the accommodating space.

[0005] According to an embodiment of the utility model, if heat-conducting glue or structural glue is needed for heat conduction or fixation, the end of the adjacent electric core forms a triangular space, and there is a gap for glue coating, the heat-conducting glue is arranged in the triangular space, and the contact area is larger, which can leave a glue storage space and increase the glue effect.

[0006] According to an embodiment of the utility model, the electric core is connected through the copper bar.

[0007] According to an embodiment of the utility model, the copper bar is arranged in a stepped shape.

[0008] According to an embodiment of the utility model, the electric core is connected through the FPC.

[0009] According to an embodiment of the utility model, the battery pack is provided with a temperature sensor.

[0010] According to an embodiment of the utility model, the temperature sensor is arranged in the triangular space.

[0011] According to an embodiment of the utility model, the inclination angle of the electric core is greater than 75 DEG and less than 90 DEG.

[0012] According to one embodiment of the present invention, several adjacent groups of the battery cells are installed in the module housing.

[0013] The beneficial effects of this utility model are that the cells are stacked and arranged at an angle, which reduces the overall height. This makes it more suitable for products with limited height space and applicable to multiple scenarios such as CTM and CTP, making it more versatile.

[0014] Other battery system components, such as BMS, copper busbars, wiring harnesses, FPCs, and NTCs, can be effectively arranged in the area formed between the cell stack and the casing, which is beneficial for fixing with the casing and improving space utilization.

[0015] The thermally conductive adhesive is arranged in a triangular space, resulting in a larger contact area and better thermal conductivity. The triangular space not only provides space for adhesive storage but also maximizes the adhesive's effectiveness. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the battery pack in Example 1;

[0018] Figure 2 This is a schematic diagram of the overall structure of the battery pack in Example 2. Detailed Implementation

[0019] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0020]

Example 1

[0021] A type of battery pack, such as Figure 1 It includes a housing 1, a battery management system 2, a wiring harness 4, and battery cells 5. Several groups of battery cells 5 are arranged at an angle in the housing 1. The battery cells 5 located on the outside form a receiving space between the housing 1 and the housing. The battery management system 2 and the wiring harness 4 are arranged in the receiving space.

[0022] Specifically, the outer casing 1 can adopt a cuboid structure or other structures with a partial square cross-section, and the battery cell 5 is arranged at an angle relative to the bottom of the outer casing 1, such as... Figure 1 The battery cell 5 is arranged at an angle to the right. The angle between the right side of the battery cell 5 and the bottom of the outer casing 1 can be defined according to the actual product. In this embodiment, it is preferred to be greater than 75° and less than 90°.

[0023] The triangular accommodating space between the two sides of the battery cell 5 and the shell 1 is used to arrange the electrical connection and communication connection wire harness, such as the battery management system 2 (BMS or CMC board) and the wire harness 4. Since the battery management system 2 and the wire harness 4 have irregular structures, arranging them in the triangular accommodating space can make the space utilization higher.

[0024] The triangular space between the upper and lower ends of the battery cell 5 and the shell 1 is used to set the heat-conducting glue 6 or the heat-conducting structural glue. Figure 1 The heat-conducting glue 6 is arranged in the triangular space, has a larger contact area, and has a better heat-conducting effect. The triangular space can not only leave a glue storage space, but also increase the effect of using glue.

[0025] Further, the battery module is provided with a temperature sensor 7. In this embodiment, the temperature sensor 7 is an NTC. The NTC and the wire harness are also arranged in the triangular space.

[0026] It should be noted that the arrangement of the copper bar and the temperature sensor in this scheme can also be arranged in other positions of the non-triangular space. The copper bar structure can not be limited, and it is recommended to be designed as a grounding structure according to the thickness of the battery cell and the number of series and parallel connections.

[0027] Optionally, the battery cells 5 are connected by a copper bar or an FPC.

[0028] When the copper bar is used for connection, the copper bar 3 is arranged in a stepped shape, matches the shape of the end of the battery cell 5, and is arranged in the triangular space. The tail end can extend into the accommodating space. Figure 1

[0029] The battery cell tilting stacking mode in this scheme is suitable for all conventional battery cells. It is recommended that the soft package battery cell has the best arrangement effect.

[0030] After the battery cells are stacked and arranged in a tilted manner, the overall height is lowered, which is more friendly to the arrangement of products with limited height space, and is suitable for CTM, CTP and other scenes, and has higher universality.

[0031] Other battery system parts, such as BMS, copper bar, wire harness, FPC, NTC, etc., can be effectively arranged in the area formed between the battery cell stack and the shell, which is beneficial to fixing by the shell and improving the space utilization.

[0032] Embodiment 2: Different from embodiment 1, in this embodiment, the copper bar is arranged in a stepped shape, matches the shape of the end of the battery cell, and is arranged in the triangular space. Figure 2 ​The battery module is provided with a module housing 8, and each module housing 8 contains several sets of battery cells 5 to form a battery cell module. The module housing 8 can be square or have a cross-section with the same outline as the several sets of battery cells 5. The temperature sensor 7 is set in the triangular space between the battery cell 5 and the module housing 8. The left and right sides of the module housing 8 form a receiving space with the outer shell 1. The battery management system 2 and the wiring harness 4 are arranged in the receiving space. The contact area between the module and the housing is better, which effectively increases the stability of the overall battery structure.

[0033] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A battery pack, characterized by: It includes a shell (1), a battery management system (2), a wire harness (4) and a battery cell (5), the battery cell (5) is arranged in the shell (1) in several groups of stacked and inclined arrangement, the inclination angle of the battery cell (5) is greater than 75° and less than 90°, the battery cell (5) on the outside forms a triangular containing space with the shell (1), the battery management system (2) and the wire harness (4) are arranged in the containing space.

2. The battery pack of claim 1, wherein: The battery cell (5) is connected with the heat-conducting glue (6).

3. The battery pack of claim 2, wherein: The end of the adjacent battery cell (5) forms a triangular space, and the heat-conducting glue (6) is arranged in the triangular space.

4. The battery pack of any one of claims 1-3, wherein: The battery cell (5) is connected through a copper bar.

5. The battery pack of claim 4, wherein: The copper bar (3) is arranged in a stepped shape.

6. The battery pack of any one of claims 1-3, wherein: The battery cell (5) is connected through an FPC.

7. The battery pack of any one of claims 1-3, wherein: A temperature sensor (7) is arranged in the battery pack.

8. The battery pack of claim 7, wherein: The temperature sensor (7) is arranged in the triangular space.

9. The battery pack of claim 1, wherein: The adjacent several groups of battery cell (5) are installed in a module shell (8).

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