Blade battery pack heat management structure

Abstract

The utility model provides a heat management structure of a blade battery pack. The heat management structure comprises a lower liquid cooling plate; the two side liquid cooling plates are arranged on the two sides of the lower liquid cooling plate respectively; the battery pack is mounted on the lower liquid cooling plate, and liquid cooling flow channels are formed in the lower liquid cooling plate and the side liquid cooling plates; the battery pack is provided with a plurality of blade batteries, aluminum bars, an insulating support and a heat-conducting insulating sheet, the blade batteries are arranged in a staggered mode according to positive and negative pole columns, the aluminum bars are installed on the positive and negative pole columns of the blade batteries and used for connecting the blade batteries in series and parallel, the insulating support is installed on the aluminum bars, and the heat-conducting insulating sheet is installed on the insulating support. And the inner side surfaces of the corresponding side liquid cooling plates are in close contact.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery thermal management, and in particular relates to a blade battery pack thermal management structure. Background Art

[0002] With the rapid development of the new energy industry, lithium batteries are widely used in new energy vehicles and energy storage. Among them, blade batteries have begun to become an important direction of the market with their high energy density and high grouping rate. However, the super-long battery makes the battery's conduction path longer, the internal resistance is higher, and the heat generation is more serious, which is a major dilemma in the development of blade batteries. Under extreme operating conditions, the existing single bottom or side cooling makes it difficult for blade batteries to meet thermal management requirements. Utility Model Content

[0003] The utility model is developed to solve the above-mentioned technical problems, and aims to provide a blade battery pack thermal management structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a blade battery pack thermal management structure, which has the following characteristics, including: a lower liquid cooling plate; two side liquid cooling plates, respectively arranged on both sides of the lower liquid cooling plate; and a battery pack, installed on the lower liquid cooling plate, wherein the lower liquid cooling plate and the side liquid cooling plate are both provided with liquid cooling channels inside; the battery pack comprises a plurality of blade batteries, an aluminum bar, an insulating bracket and a thermally conductive insulating sheet; the plurality of blade batteries are arranged alternately according to the positive and negative poles, and the aluminum bar is installed on the positive and negative poles of the plurality of blade batteries, so as to connect the plurality of blade batteries in series and parallel; the insulating bracket is installed on the aluminum bar, and the thermally conductive insulating sheet is installed on the insulating bracket and is in close contact with the inner side surface of the corresponding side liquid cooling plate.

[0006] The thermal management structure of the blade battery pack provided by the utility model may also have the following feature: a heat-conducting insulating sheet is provided between the battery pack and the upper surface of the lower liquid cooling plate.

[0007] The thermal management structure of the blade battery pack provided by the utility model may also have the following feature: wherein, a slot for placing a thermally conductive insulating sheet is provided on the insulating bracket.

[0008] The thermal management structure of the blade battery pack provided by the present invention may also have the following feature: wherein the liquid cooling channels of the lower liquid cooling plate and the two side liquid cooling plates are connected in parallel through external pipes.

[0009] The thermal management structure of the blade battery pack provided by the utility model may also have the following features: wherein the ends of the lower liquid cooling plate and the side liquid cooling plates are provided with a water inlet and a water outlet connected to the corresponding liquid cooling flow channels.

[0010] The thermal management structure of the blade battery pack provided by the utility model may also have the following features: wherein the lower liquid cooling plate and the side liquid cooling plates are both made of aluminum or copper materials with high structural strength, high thermal conductivity, corrosion resistance, and easy processing.

[0011] The thermal management structure of the blade battery pack provided by the utility model may also have the following feature: wherein the thermally conductive insulating sheet is a silicone sheet or a ceramic sheet.

[0012] The thermal management structure of the blade battery pack provided by the present invention may also have the following feature: an insulating flame-retardant sheet is provided between two adjacent blade batteries.

[0013] Function and effect of utility model

[0014] According to the thermal management structure of the blade battery pack involved in the utility model, since it has a lower liquid cooling plate and a side liquid cooling plate, the battery pack is installed on the lower liquid cooling plate; the battery pack has multiple blade batteries, an aluminum bar, an insulating bracket and a thermally conductive insulating sheet; the aluminum bar is installed on the positive and negative poles of the multiple blade batteries, and the multiple blade batteries are connected in series and parallel; the insulating bracket is installed on the aluminum bar, and the thermally conductive insulating sheet is installed on the insulating bracket and is in close contact with the inner side of the side liquid cooling plate, so that the internal heat of the battery pack can be conducted to the side liquid cooling plate through the pole via the thermally conductive insulating sheet, and from the side of the battery to the lower liquid cooling plate, thereby quickly conducting the heat in the battery pack, controlling the battery within the optimal operating temperature range, and improving the consistency and safety of the battery pack during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the exploded installation of the thermal management structure of the blade battery pack in an embodiment of the utility model; and

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the lower liquid cooling plate and the side liquid cooling plate in an embodiment of the utility model. DETAILED DESCRIPTION

[0017] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0018] <Example>

[0019] Figure 1 It is a schematic diagram of the exploded installation of the thermal management structure of the blade battery pack in an embodiment of the utility model; Figure 2 It is a schematic diagram of the three-dimensional structure of the lower liquid cooling plate and the side liquid cooling plate in an embodiment of the utility model.

[0020] like Figure 1 and Figure 2As shown, in this embodiment, the blade battery pack thermal management structure 100 includes a lower liquid cooling plate 10 , two side liquid cooling plates 20 , two side plates 30 and a plurality of battery packs 40 .

[0021] like Figure 1 and Figure 2 As shown, two side liquid cooling plates 20 are respectively arranged on both sides of the lower liquid cooling plate 10, and two side plates 30 are respectively arranged at both ends of the lower liquid cooling plate 10. The lower liquid cooling plate 10, the two side liquid cooling plates 20 and the two side plates 30 together constitute a battery box with an upper opening for mounting multiple battery packs 40.

[0022] Liquid cooling channels (not shown in the figure) are formed inside the lower liquid cooling plate 10 and the side liquid cooling plates 20. The ends of the lower liquid cooling plate 10 are provided with a water inlet 11 and a water outlet 12 connected to the corresponding liquid cooling channels, and the ends of each side liquid cooling plate 20 are provided with a water inlet 21 and a water outlet 22 connected to the corresponding liquid cooling channels.

[0023] In this embodiment, the liquid cooling channels of the lower liquid cooling plate 10 and the two side liquid cooling plates 20 are connected in parallel through external pipes; the lower liquid cooling plate 10 and the side liquid cooling plates 20 are made of aluminum or copper materials with high structural strength, high thermal conductivity, corrosion resistance, and easy processing.

[0024] like Figure 1 and Figure 2 As shown, a plurality of battery packs 40 are mounted on the lower liquid cooling plate 10 and arranged in sequence along the length direction of the battery box. Each battery pack 40 is composed of a plurality of blade batteries 41, a plurality of aluminum bars 42, an insulating bracket 43 and a thermally conductive insulating sheet 44.

[0025] The plurality of blade batteries 41 are arranged in a staggered manner according to the positive and negative poles. In this embodiment, an insulating flame retardant sheet (not shown in the figure) is provided between two adjacent blade batteries 41.

[0026] A plurality of aluminum bars 42 are installed on the positive and negative poles of a plurality of blade batteries 41 to connect the plurality of blade batteries 41 in series and in parallel.

[0027] The insulating bracket 43 is installed on the aluminum bar 42, and a slot (not shown in the figure) for installing the heat-conducting insulating sheet 44 is provided on the side of the insulating bracket 43 away from the aluminum bar 42.

[0028] The heat-conducting insulating sheet 44 is installed in the slot on the insulating bracket 43 and is in close contact with the inner side surface of the corresponding side liquid cooling plate 20. In this embodiment, the heat-conducting insulating sheet 44 is made of a silicone sheet or a ceramic sheet.

[0029] In this embodiment, a heat-conducting adhesive layer (not shown in the figure) is provided on the upper surface of the lower liquid cooling plate 10, and the battery pack 40 is fixedly mounted on the heat-conducting adhesive layer.

[0030] Example Function and Effect

[0031] According to the thermal management structure of the blade battery pack involved in this embodiment, since it has a lower liquid cooling plate and a side liquid cooling plate, the battery pack is installed on the lower liquid cooling plate; the battery pack has multiple blade batteries, multiple aluminum bars, an insulating bracket and a thermally conductive insulating sheet; multiple aluminum bars are installed on the positive and negative poles of multiple blade batteries, and the multiple blade batteries can be connected in series and parallel; the insulating bracket is installed on the aluminum bar, and the thermally conductive insulating sheet is installed on the insulating bracket and is in close contact with the inner side of the side liquid cooling plate, so that the internal heat of the battery pack can be conducted to the side liquid cooling plate through the pole via the thermally conductive insulating sheet, and from the side of the battery to the lower liquid cooling plate, thereby quickly conducting the heat in the battery pack, controlling the battery within the optimal operating temperature range, and improving the consistency and safety of the battery pack during use.

[0032] In addition, because a thermally conductive adhesive layer is provided between the side of the battery pack and the upper surface of the lower liquid cooling plate, the heat conduction efficiency of the battery pack from the side of the battery to the lower liquid cooling plate is further improved.

[0033] In addition, because the insulating bracket is provided with a slot for placing the thermally conductive insulating sheet, the installation of the thermally conductive insulating sheet is faster and more convenient.

[0034] In addition, because the liquid cooling channels of the lower liquid cooling plate and the two side liquid cooling plates are connected in parallel through external pipes, the liquid cooling channels are independent of each other and do not affect each other, which further improves the reliability of thermal management of the battery pack.

[0035] In addition, because there is an insulating flame-retardant sheet between two adjacent blade batteries, even if one battery suffers thermal runaway, the heat will not spread to the adjacent battery.

[0036] The above implementation modes are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A blade battery pack thermal management structure, characterized in that: include: Lower liquid cooling plate; Two side liquid cooling plates, respectively arranged on both sides of the lower liquid cooling plate; as well as A battery pack is mounted on the lower liquid cooling plate. Wherein, liquid cooling channels are formed inside the lower liquid cooling plate and the side liquid cooling plate. The battery pack comprises a plurality of blade batteries, an aluminum bar, an insulating bracket and a heat-conducting insulating sheet. The plurality of blade batteries are arranged alternately according to the positive and negative poles. The aluminum bar is installed on the positive and negative poles of the plurality of blade batteries, and is used to connect the plurality of blade batteries in series and parallel. The insulating bracket is installed on the aluminum bar. The heat-conducting insulating sheet is mounted on the insulating bracket and is in close contact with the inner side surface of the corresponding side liquid cooling plate.

2. The blade battery pack thermal management structure according to claim 1, characterized in that: in, A heat-conducting insulating sheet is provided between the battery pack and the upper surface of the lower liquid cooling plate.

3. The blade battery pack thermal management structure according to claim 1, characterized in that: in, The insulating bracket is provided with a slot for placing the heat-conducting insulating sheet.

4. The blade battery pack thermal management structure according to claim 1, characterized in that: in, The liquid cooling channels of the lower liquid cooling plate and the two side liquid cooling plates are connected in parallel through external pipelines.

5. The blade battery pack thermal management structure according to claim 1, characterized in that: in, The ends of the lower liquid cooling plate and the side liquid cooling plate are both provided with a water inlet and a water outlet which are connected with the corresponding liquid cooling flow channels.

6. The blade battery pack thermal management structure according to claim 1, characterized in that: in, The lower liquid cooling plate and the side liquid cooling plate are both made of aluminum or copper material with high structural strength, high thermal conductivity, corrosion resistance and easy processing.

7. The blade battery pack thermal management structure according to claim 1, characterized in that: in, The thermally conductive insulating sheet is a silica gel sheet or a ceramic sheet.

8. The blade battery pack thermal management structure according to claim 1, characterized in that: in, An insulating flame-retardant sheet is provided between two adjacent blade batteries.

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