CN218414765U - Blade battery heat abstractor based on top liquid cooling - Google Patents

Abstract

The utility model relates to a blade battery cooling device based on top liquid cooling, which comprises a phase change heat dissipation component, a first liquid cooling plate and a blade battery. The variable heat dissipation component is attached to the front or rear end of the blade battery, the first liquid cooling plate is located on the upper side of the blade battery, the top of the blade battery is attached to the first liquid cooling plate, and the top of the phase change heat dissipation component is the second cooling plate for releasing heat. A condensing end, the first condensing end is attached to the first liquid cold plate. The utility model can improve the heat dissipation efficiency of the blade battery, average heat distribution, prevent thermal runaway accidents, and has broad development prospects in the field of power battery module heat dissipation.

Description

Blade battery cooling device based on top liquid cooling

technical field

The utility model relates to the technical field of battery heat dissipation, in particular to a blade battery heat dissipation device based on top liquid cooling.

Background technique

As lithium batteries continue to occupy the power market of new energy vehicles, from enterprises to society, the development of lithium batteries is gradually paid attention to. Whether it is the diversified application of soft pack batteries or the standardized installation of square shell batteries, it not only promotes the development of lithium batteries. go one step further. Among them, the blade battery has become an important direction of the market due to its ultra-high energy density. However, behind the ultra-long battery is the greater instability and even safety hazards of the battery. Serious heating of power battery tabs is an important dilemma for battery development. The design of blade battery tabs on both sides solves this problem to a certain extent. However, when the battery is facing extreme working conditions, simple bottom liquid cooling still It is difficult to make the thermal control of the battery meet the requirements.

Utility model content

In order to overcome the defects of the existing technology, the technical problem to be solved by the utility model is to propose a blade battery heat dissipation device based on top liquid cooling, which can improve the heat dissipation efficiency of the power battery module, average heat distribution, and prevent thermal runaway accidents.

For this purpose, the utility model adopts the following technical solutions:

The utility model provides a blade battery cooling device based on top liquid cooling, which includes a phase change heat dissipation component, a first liquid cooling plate and a blade battery. The tabs of the blade battery are respectively arranged on the left and right sides or the bottom of the blade battery. The phase change heat dissipation component is attached to the front or rear end of the blade battery, the first liquid cold plate is located on the upper side of the blade battery, the top of the blade battery is attached to the first liquid cold plate, and the top of the phase change heat dissipation component is a heat release The first condensing end is attached to the first liquid cooling plate.

A preferred technical solution of the utility model is that the phase change heat dissipation component is a vapor chamber.

The preferred technical solution of the utility model is that there are several blade batteries arranged in a single row, and a soaking plate is correspondingly arranged between each blade battery, and the top of each blade battery is attached to the first liquid cold plate, and each The first condensation end of the vapor chamber is attached to the first liquid cold plate.

The preferred technical solution of the utility model is that it also includes a second liquid cold plate, the second liquid cold plate is located on the lower side of the blade battery, the bottom of the blade battery is attached to the second liquid cold plate, and the bottom end of the soaking plate is for releasing The second condensing end of heat, the second condensing end is attached to the second liquid cold plate.

The preferred technical solution of the utility model is that a heat dissipation working medium is arranged in the vapor chamber, and the heat dissipation working medium is deionized water.

The preferred technical solution of the utility model is that a heat conduction layer is arranged between the vapor chamber and the blade battery, and between the first condensation end and the first liquid cooling plate.

The preferred technical solution of the utility model is that the material of the heat conducting layer is heat conducting glue or heat conducting mud. A preferred technical solution of the utility model is that the soaking plate is a copper-based soaking plate or an aluminum-based soaking plate.

The beneficial effects of the utility model:

The utility model proposes a blade battery heat dissipation device based on top liquid cooling. The liquid cooling design of the first liquid cooling plate is arranged on the top of the blade battery, so that the phase change heat dissipation component can realize the phase change liquid passage along the gravity transmission, that is, through the upper end The condensed liquid after being cooled by the first liquid cooling plate can quickly return to the lower end of the vapor chamber and the evaporation end under the action of gravity, which can effectively improve the thermal conductivity of the phase change heat dissipation component and give full play to the phase change of the phase change heat dissipation component The advantages of heat conduction greatly improve the heat dissipation efficiency, so that the blade battery can distribute heat evenly, so that the thermal control of the battery can meet the requirements and prevent thermal runaway accidents.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a perspective view of the blade battery cooling device based on top liquid cooling in Embodiment 1;

Fig. 2 is a left view of the blade battery cooling device based on top liquid cooling in Embodiment 1;

Fig. 3 is a perspective view of the blade battery cooling device based on top liquid cooling in Embodiment 4;

Fig. 4 is a left view of the blade battery cooling device based on top liquid cooling in Embodiment 4;

Fig. 5 is an exploded view of the blade battery cooling device based on top liquid cooling in Embodiment 4;

Fig. 6 is a perspective view of the blade battery cooling device based on top liquid cooling in Embodiment 6;

Fig. 7 is a left side view of the blade battery cooling device based on top liquid cooling according to the sixth embodiment.

In the picture:

1- soaking plate; 11- first condensing end; 12- second condensing end; 13- evaporating end; 2- first liquid cold plate; 21- first liquid cold plate; 22- second liquid cold plate; 3 - blade battery; 31 - tabs.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

Embodiment one

As shown in FIGS. 1-2 , a blade battery heat dissipation device based on top liquid cooling provided in this embodiment includes a phase change heat dissipation component, a first liquid cooling plate 21 and a blade battery 3 . In this embodiment, the vapor chamber 1 is used for the phase change heat dissipation component, and the vapor chamber 1 is a copper-based vapor chamber. The tabs 31 of the blade battery 3 are respectively arranged on the left and right sides of the blade battery 3, the board surface of the vapor chamber 1 is close to the rear end of the blade battery 3, the first liquid cooling plate 21 is located on the upper side of the blade battery 3, and the blade battery 3 The top of the battery 3 is in close contact with the first liquid cold plate 21 , and the top of the vapor chamber 1 is the first condensing end 11 for releasing heat, and the first condensing end 11 is in close contact with the first liquid cold plate 21 . The lower end of the vapor chamber 1 is the evaporation end 13 for absorbing heat. The first liquid cold plate is provided with a liquid inlet and a liquid outlet, and the cooling liquid inside circulates in the first liquid cold plate, so as to continuously take away the heat of the soaking plate, so as to realize the rapid uniformity of the blade battery surface. temperature.

In this embodiment, the use of the vapor chamber can effectively realize the rapid uniform temperature of the blade battery surface, reduce the local heat concentration of the battery and improve the service life of the battery. Among them, the liquid cooling design of the first liquid cooling plate on the top of the blade battery can enable the vapor chamber to realize the phase change liquid channel along the gravity transmission, that is, the liquid condensed after being cooled by the first liquid cooling plate at the upper end is under the action of gravity It can quickly return to the lower end of the vapor chamber and the evaporation end, effectively improving the heat conduction performance of the vapor chamber, and giving full play to the phase change heat conduction advantages of the vapor chamber.

Preferably, the vapor chamber 1 is provided with a cooling medium, which is deionized water with a resistivity of 18.2 MΩ*cm, and the vacuum inside is 7 Pa after the vacuum treatment. After condensing, the heat-dissipating working fluid returns to the evaporation end through the capillary action of the liquid-absorbing core for the second stage of heat transfer, realizing a heat cycle inside the system.

Embodiment two

This embodiment provides a blade battery cooling device based on top liquid cooling. The difference between this embodiment and Embodiment 1 is that the phase change heat dissipation component uses a flat heat pipe, which has light weight, good startability and The advantage of temperature uniformity.

Embodiment three

This embodiment provides a blade battery cooling device based on top liquid cooling. The difference between this embodiment and Embodiment 1 is that the tabs of the blade batteries are respectively arranged at the bottom ends of the blade batteries. In this embodiment, the vapor chamber is an aluminum-based vapor chamber.

Embodiment four

As shown in Figure 3-5, this embodiment provides a blade battery cooling device based on top liquid cooling. The difference between this embodiment and Embodiment 1 is that there are several blade batteries 3 arranged in a single row, each A vapor chamber 1 is correspondingly arranged between each blade battery 3, the top of each blade battery 3 is attached to the first liquid cooling plate 21, and the first condensation end 11 of each soaking plate 1 is attached to the first liquid cooling plate 21. plate 21. In this embodiment, the number of blade batteries is ten, and the number of vapor chambers is ten, and the two are arranged alternately and spaced apart in sequence.

In this embodiment, it can be applied to the application scene of multiple blade batteries, and the structural arrangement of this embodiment makes the space utilization rate high, and can further improve the heat dissipation efficiency of the blade battery cooling device.

Embodiment five

The difference between this embodiment and the fourth embodiment is that a heat conduction layer is provided between the vapor chamber 1 and the blade battery 3 , and between the first condensation end 11 and the first liquid cooling plate 21 , which can further improve the heat exchange efficiency.

Specifically, the material of the heat conduction layer is heat conduction glue.

Embodiment six

As shown in Figures 6-7, this embodiment provides a blade battery cooling device based on top liquid cooling. The difference between this embodiment and Embodiment 4 is that it also includes a second liquid cooling plate 22, and the second liquid cooling The plate 22 is located on the lower side of the blade battery 3, the bottom of the blade battery 3 is attached to the second liquid cold plate 22, the bottom of the vapor chamber 1 is the second condensation end 12 that releases heat, and the second condensation end 12 is attached to the The second liquid cold plate 22. The middle end of the vapor chamber is the evaporating end 13 for absorbing heat. After the evaporating end 13 of the vapor chamber absorbs heat, it transfers to the first condensing end 11 and the second condensing end 12 in the upper and lower directions.

Specifically, a heat conduction layer is provided between the vapor chamber 1 and the blade battery 3, between the first condensation end 11 and the first liquid cold plate 21, and between the second condensation end 12 and the first liquid cold plate 21, which can further Improve heat transfer efficiency.

Specifically, the material of the heat conduction layer is heat conduction paste.

The utility model is described through preferred embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. The utility model is not limited by the specific embodiments disclosed here, and other embodiments falling within the claims of the application all belong to the protection scope of the utility model.

Claims (8)

1. A blade battery cooling device based on top liquid cooling, characterized in that: It includes a phase change heat dissipation component, a first liquid cold plate (21) and a blade battery (3), and the tabs (31) of the blade battery (3) are respectively arranged on the left and right sides or the bottom of the blade battery (3); The phase change heat dissipation component is attached to the front or rear end of the blade battery (3), the first liquid cooling plate (21) is located on the upper side of the blade battery (3), and the blade battery (3) ) is attached to the first liquid cold plate (21); The top of the phase change heat dissipation component is a first condensation end (11) that releases heat, and the first condensation end (11) is attached to the first liquid cooling plate (21). 2. The blade battery cooling device according to claim 1, characterized in that: The phase change heat dissipation component is a vapor chamber (1). 3. The blade battery cooling device according to claim 2, characterized in that: There are several blade batteries (3) arranged in a single row; The vapor chamber (1) is correspondingly arranged between each of the blade batteries (3); The top of each blade battery (3) is attached to the first liquid cold plate (21), and the first condensation end (11) of each vapor chamber (1) is attached to the first Liquid cold plate (21). 4. The blade battery cooling device according to claim 2, characterized in that: Also includes a second liquid cold plate (22); The second liquid cooling plate (22) is located on the lower side of the blade battery (3), and the bottom of the blade battery (3) is attached to the second liquid cooling plate (22); The bottom end of the vapor chamber (1) is a second condensing end (12) that releases heat, and the second condensing end (12) is attached to the second liquid cold plate (22). 5. The blade battery cooling device according to claim 2, characterized in that: The vapor chamber (1) is provided with a heat dissipation working medium, and the heat dissipation working medium is deionized water. 6. The blade battery cooling device according to claim 2, characterized in that: A heat conduction layer is arranged between the vapor chamber (1) and the blade battery (3), and between the first condensation end (11) and the first liquid cooling plate (21). 7. The blade battery cooling device according to claim 6, characterized in that: The material of the heat conduction layer is heat conduction glue or heat conduction mud. 8. The blade battery cooling device according to claim 2, characterized in that: The vapor chamber (1) is a copper-based vapor chamber or an aluminum-based vapor chamber.

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