Layered electric vehicle battery pack

Abstract

The utility model discloses a layered electric automobile battery pack in the technical field of battery packs, which comprises a box body, battery pieces and radiating fins, the battery pieces are placed in an inner cavity of the box body and are sequentially arranged from left to right, the radiating fins are fixedly connected to the front side wall, the rear side wall and the bottom of the box body, and the radiating fins are arranged in the inner cavity of the box body. Bottom heat conduction strips are fixedly connected to the bottom of an inner cavity of the box body, the bottom heat conduction strips are sequentially arranged from left to right, the bottom heat conduction strips are located between every two battery pieces, and the bottoms of the bottom heat conduction strips penetrate through the box body and extend to the bottom of the box body. The layered electric vehicle battery pack has the advantages that the layered electric vehicle battery pack is reasonable in structural design, the heat of the battery pieces can be timely discharged, the heat dissipation area can be increased, the heat dissipation efficiency can be improved, and the performance of the battery pack can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a layered electric vehicle battery pack. Background Art

[0002] As the power density of battery cells increases, the charge and discharge rates increase, and the fast charging time becomes shorter, the demand for battery heat dissipation is also increasing. The conventional liquid cooling mode can no longer meet the heat dissipation requirements of high-power cells.

[0003] Existing battery pack heat dissipation generally uses a heat dissipation mechanism to dissipate the heat of the entire battery pack. However, the structure of the battery cells inside the battery panel is closely arranged, resulting in the heat between the battery cells cannot be discharged in time, and the heat dissipation area of ​​conventional battery packs is small when stacked together, which affects the heat dissipation effect and causes the performance of the battery pack to decline. For this reason, we propose a layered electric vehicle battery pack. Utility Model Content

[0004] The purpose of the utility model is to provide a layered electric vehicle battery pack to solve the problem of affecting the heat dissipation effect and causing the performance of the battery pack to decrease as mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a layered electric vehicle battery pack, comprising a box body, battery cells and heat sinks, the battery cells are placed in the inner cavity of the box body, and the battery cells are arranged in sequence from left to right, the heat sinks are fixedly connected to the front and rear side walls and the bottom of the box body, a bottom thermally conductive strip is fixedly connected to the bottom of the inner cavity of the box body, and the bottom thermally conductive strips are arranged in sequence from left to right, the bottom thermally conductive strip is located between every two battery cells, the bottom of the bottom thermally conductive strip passes through the box body and extends to the bottom of the box body, the bottom of the bottom thermally conductive strip is fixedly connected to the bottom heat sink, the front and rear side walls of the inner cavity of the box body are fixedly connected to the side wall thermally conductive strips, and the side wall thermally conductive strips are arranged in sequence from left to right, the outer side of the side wall thermally conductive strip passes through the box body and extends to the front and rear side walls of the box body, and the outer side of the side wall thermally conductive strip is fixedly connected to the front and rear heat sinks.

[0006] As a further description of the above technical solution:

[0007] The left and right side walls of the battery cell are bonded with heat absorbing sheets, and the inner sides of the heat absorbing sheets are inserted with heat transfer sheets.

[0008] As a further description of the above technical solution:

[0009] The front and rear side walls of the heat transfer plate are fixedly connected to the front and rear side wall heat conduction strips, and the bottom of the heat transfer plate is fixedly connected to the bottom heat conduction strip.

[0010] As a further description of the above technical solution:

[0011] The left side wall of the heat transfer plate is provided with transverse heat conduction grooves, and the transverse heat conduction grooves are arranged in sequence from top to bottom. The right side of the heat transfer plate is provided with vertical heat conduction grooves, and the vertical heat conduction grooves are arranged in sequence from front to back.

[0012] As a further description of the above technical solution:

[0013] The bottom of the heat sink at the bottom is fixedly connected with bottom fins, and the bottom fins are arranged in sequence from left to right. The outer walls of the heat sinks on the front and rear sides are fixedly connected with side wall fins, and the side wall fins are arranged in sequence from left to right. The outer walls of the heat sinks are fixedly connected with cooling fans, and the cooling fans are arranged in sequence from left to right.

[0014] As a further description of the above technical solution:

[0015] The heat sink, the bottom heat conducting strip, the side wall heat conducting strip, the heat transfer sheet, the bottom fin and the side wall fin are an integrally formed structure.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the layered electric vehicle battery pack installs heat sinks on the front and rear sides and the bottom of the box body, and at the same time, a heat transfer sheet is arranged inside the box body, and the heat transfer sheet is connected to the external heat sink through the bottom heat conductive strip and the side wall heat conductive strip, and the battery cell is installed between every two heat transfer sheets, and at the same time, a heat absorption sheet is placed between the battery cell and the heat transfer sheet, and the heat of the battery cell is transferred to the heat transfer sheet through the heat absorption sheet, and the heat transfer sheet transfers the heat to the heat sink through the bottom heat conductive strip and the side wall heat conductive strip, and the bottom fins and side wall fins on the heat sink and the heat dissipation fan are used to dissipate heat on three sides of the battery cell, so that the heat of the battery cell can be discharged in time, and the heat dissipation area can be increased, the heat dissipation efficiency is improved, and the performance of the battery pack is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a layered electric vehicle battery pack proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of a layered electric vehicle battery pack proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a top-down cross-sectional structure of a layered electric vehicle battery pack proposed by the utility model.

[0020] In the figure: 100, box body; 110, bottom heat conduction strip; 120, side wall heat conduction strip; 200, battery cell; 210, heat absorption plate; 220, heat transfer plate; 221, horizontal heat conduction groove; 222, vertical heat conduction groove; 300, heat sink; 310, bottom fin; 320, side wall fin; 330, cooling fan. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The utility model provides a layered electric vehicle battery pack, which increases the heat dissipation area, improves the heat dissipation efficiency, and improves the performance of the battery pack. Figure 1-3 , comprising a box body 100, a battery cell 200 and a heat sink 300;

[0025] Please refer again Figure 1-3The bottom of the inner cavity of the box body 100 is fixedly connected with a bottom heat-conducting strip 110, and the bottom heat-conducting strips 110 are arranged from left to right. The bottom heat-conducting strip 110 is located between every two battery cells 200. The bottom of the bottom heat-conducting strip 110 passes through the box body 100 and extends to the bottom of the box body 100. The bottom of the bottom heat-conducting strip 110 is fixedly connected to the bottom heat sink 300. The front and rear side walls of the inner cavity of the box body 100 are fixedly connected with side wall heat-conducting strips 120, and the side wall heat-conducting strips 120 are arranged from left to right. The outer side of the side wall heat conductive strip 120 penetrates the box body 100 and extends to the front and rear side walls of the box body 100. The outer side of the side wall heat conductive strip 120 is fixedly connected to the front and rear side heat sinks 300. The heat sinks 300 are installed on the front and rear sides and the bottom of the box body 100. At the same time, a heat transfer sheet 220 is arranged inside the box body 100. The heat transfer sheet 220 is connected to the external heat sink 300 through the bottom heat conductive strip 110 and the side wall heat conductive strip 120. The battery cell 200 is installed between every two heat transfer sheets 220.

[0026] Please refer again Figure 1-3 The left and right side walls of the battery cell 200 are bonded with a heat absorbing sheet 210, and a heat transfer sheet 220 is inserted between the inner sides of the heat absorbing sheet 210. The front and rear side walls of the heat transfer sheet 220 are fixedly connected to the front and rear side wall heat conduction strips 120, and the bottom of the heat transfer sheet 220 is fixedly connected to the bottom heat conduction strip 110. The left side wall of the heat transfer sheet 220 is provided with a transverse heat conduction groove 221, and the transverse heat conduction grooves 221 are arranged in sequence from top to bottom. The right side of the heat transfer sheet 220 is provided with a vertical heat conduction groove. 222, and the vertical heat transfer grooves 222 are arranged sequentially from front to back, the battery cells 200 are placed in the inner cavity of the box body 100, and the battery cells 200 are arranged sequentially from left to right, and the heat absorption sheet 210 is placed between the battery cells 200 and the heat transfer sheet 220, and the heat of the battery cells 200 is transferred to the heat transfer sheet 220 through the heat absorption sheet 210, and the heat transfer sheet 220 transfers the heat to the heat sink 300 through the bottom heat conduction strip 110 and the side wall heat conduction strip 120;

[0027] In summary, the heat of the battery cell 200 can be discharged in time, and the heat dissipation area can be increased, the heat dissipation efficiency can be improved, and the performance of the battery pack can be improved.

[0028] Please refer again Figure 1-3The bottom of the bottom heat sink 300 is fixedly connected with a bottom fin 310, and the bottom fins 310 are arranged in sequence from left to right. The outer walls of the front and rear heat sinks 300 are fixedly connected with side wall fins 320, and the side wall fins 320 are arranged in sequence from left to right. The outer walls of the heat sink 300 are fixedly connected with a heat dissipation fan 330, and the heat dissipation fan 330 is arranged in sequence from left to right. The heat sink 300, the bottom thermal conductive strip 110, the side wall thermal conductive strip 120, the heat transfer sheet 220, the bottom fin 310 and the side wall fin 320 are an integrated structure. The heat sink 300 is fixedly connected to the front and rear side walls and the bottom of the box body 100. The bottom fin 310 and the side wall fin 320 on the heat sink 300 and the heat dissipation fan 330 are used to dissipate heat on three sides of the battery cell 200.

[0029] In specific use, when installing the battery pack, the technical personnel in this field install the battery cell 200 between every two heat transfer sheets 220, install the heat sink 300 on the front, back and bottom sides of the box 100, and set the heat transfer sheet 220 inside the box 100. The heat transfer sheet 220 is connected to the external heat sink 300 through the bottom heat conductive strip 110 and the side wall heat conductive strip 120. At the same time, the heat absorption sheet 210 is placed between the battery cell 200 and the heat transfer sheet 220. When the battery pack is discharging, the heat absorption sheet 210 transfers the heat of the battery cell 200 to the heat transfer sheet 220, and the heat transfer sheet 220 transfers the heat to the heat sink 300 through the bottom heat conductive strip 110 and the side wall heat conductive strip 120. The bottom fins 310 and the side wall fins 320 on the heat sink 300 cooperate with the heat dissipation fan 330 to dissipate heat on three sides of the battery cell 200.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A layered electric vehicle battery pack, characterized in that: The invention comprises a box (100), a battery cell (200) and a heat sink (300), wherein the battery cell (200) is placed in the inner cavity of the box (100), and the battery cells (200) are arranged sequentially from left to right, the heat sink (300) is fixedly connected to the front and rear side walls and the bottom of the box (100), a bottom heat conducting strip (110) is fixedly connected to the bottom of the inner cavity of the box (100), and the bottom heat conducting strip (110) is arranged sequentially from left to right, the bottom heat conducting strip (110) is located between every two battery cells (200), and the bottom heat conducting strip (110) is fixedly connected to the bottom of the inner cavity of the box (100). The bottom of the box (100) passes through the box (100) and extends to the bottom of the box (100), the bottom of the bottom heat conductive strip (110) is fixedly connected to the bottom heat sink (300), the front and rear side walls of the inner cavity of the box (100) are fixedly connected with side wall heat conductive strips (120), and the side wall heat conductive strips (120) are arranged in sequence from left to right, the outer side of the side wall heat conductive strip (120) passes through the box (100) and extends to the front and rear side walls of the box (100), and the outer side of the side wall heat conductive strip (120) is fixedly connected to the front and rear heat sinks (300).

2. A layered electric vehicle battery pack according to claim 1, characterized in that: The left and right side walls of the battery cell (200) are bonded with heat absorbing sheets (210), and the inner sides of the heat absorbing sheets (210) are plugged with heat transfer sheets (220).

3. A layered electric vehicle battery pack according to claim 2, characterized in that: The front and rear side walls of the heat transfer plate (220) are fixedly connected to the front and rear side wall heat conduction strips (120), and the bottom of the heat transfer plate (220) is fixedly connected to the bottom heat conduction strip (110).

4. A layered electric vehicle battery pack according to claim 3, characterized in that: The left side wall of the heat transfer plate (220) is provided with transverse heat conduction grooves (221), and the transverse heat conduction grooves (221) are arranged in sequence from top to bottom. The right side of the heat transfer plate (220) is provided with vertical heat conduction grooves (222), and the vertical heat conduction grooves (222) are arranged in sequence from front to back.

5. A layered electric vehicle battery pack according to claim 4, characterized in that: The bottom of the heat sink (300) is fixedly connected to a bottom fin (310), and the bottom fins (310) are arranged sequentially from left to right; the outer side walls of the heat sink (300) on the front and rear sides are fixedly connected to side wall fins (320), and the side wall fins (320) are arranged sequentially from left to right; the outer side walls of the heat sink (300) are fixedly connected to a heat dissipation fan (330), and the heat dissipation fan (330) is arranged sequentially from left to right.

6. A layered electric vehicle battery pack according to claim 5, characterized in that: The heat sink (300), the bottom heat conducting strip (110), the side wall heat conducting strip (120), the heat transfer sheet (220), the bottom fin (310) and the side wall fin (320) are an integrally formed structure.

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