Heat dissipation device of new energy storage battery

Abstract

The utility model discloses a heat dissipation device of a new energy storage battery, which comprises a first vapor chamber, a second vapor chamber and a plurality of third vapor chambers arranged between the first vapor chamber and the second vapor chamber, and the first vapor chamber and the second vapor chamber are vertically arranged and parallel to each other. The third vapor chambers are vertically arranged between the first vapor chamber and the second vapor chamber at intervals, and the two ends of each third vapor chamber are connected with the inner plate face of the first vapor chamber and the inner plate face of the second vapor chamber correspondingly. The outer plate surfaces of the first vapor chamber and the second vapor chamber are in contact with shells of the energy storage batteries, and the batteries are uniformly arranged in separation grooves formed by the adjacent third vapor chambers. The device adopted by the utility model is simple and easy to process, and various components are low in price and convenient to realize; the operation is simple, convenient and practical; and the heat in the stacked battery packs can be transferred to the shell, so that the overall heat dissipation effect of the energy storage battery is greatly improved when other heat dissipation schemes are additionally arranged on the shell.

Description

Technical Field

[0001] The utility model belongs to the field of heat dissipation of new energy storage batteries, and specifically relates to a heat dissipation device for new energy storage batteries. Background Art

[0002] With the rapid development of the global economy, energy shortages and environmental problems are becoming increasingly prominent. In order to overcome the current challenges, countries are paying more attention to the development and utilization of renewable energy, and the proportion of renewable energy in electricity supply is also increasing.

[0003] On the one hand, renewable energy generation helps improve the energy structure of the existing power system and promotes energy conservation and emission reduction, which is an inevitable trend of social development. On the other hand, wind and solar power generation are greatly affected by natural factors, and the power generation has great randomness and volatility. To deeply replace fossil fuel power generation and promote the transformation of the power system, it is necessary to ensure the stability of wind and solar power generation, and this challenge depends on energy storage technology. The key requirements for the efficient operation of future energy systems are large-scale energy storage and highly flexible power generation.

[0004] In various energy storage products, energy storage batteries are often stacked and arranged as needed. When the batteries are charged and discharged, they generate huge amounts of heat. The heat in the center of the stacked battery pack is extremely difficult to be fully dissipated, causing the center temperature of the battery pack to be much higher than the overall average temperature, seriously affecting the battery life and charging and discharging efficiency. To solve the above problems, a heat dissipation device for new energy energy storage batteries is proposed based on phase change heat transfer devices. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a heat dissipation device for a new energy storage battery, which achieves the purpose of dissipating the central temperature of the energy storage battery pack by contacting the phase change heat transfer device with the energy storage battery.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A heat dissipation device for a new energy storage battery, comprising a first vapor chamber, a second vapor chamber, and a plurality of third vapor chambers disposed between the first vapor chamber and the second vapor chamber, wherein the first vapor chamber and the second vapor chamber are vertically arranged and parallel to each other, and the plurality of third vapor chambers are vertically arranged between the first vapor chamber and the second vapor chamber at intervals, and the two ends of each third vapor chamber are respectively connected to the inner plate surfaces of the first vapor chamber and the second vapor chamber;

[0008] The outer surfaces of the first and second vapor chambers are in contact with the outer shell of the energy storage battery, and the batteries are evenly arranged in the partitions formed by the adjacent third vapor chambers.

[0009] In the present invention, the third heat spreader is placed between the batteries, the heat spreader contacts the batteries for heat transfer, and the first and second heat spreaders on both sides are in contact with the outer shell. Through the temperature uniformity of the phase change heat transfer device, the heat that cannot be dissipated between the tightly arranged batteries during the operation of the energy storage battery is brought to the outer shell through the temperature uniformity of the phase change heat transfer device, thereby eliminating the thermal dead zone and greatly improving the effect of various other heat dissipation means on the heat dissipation of the battery, achieving the purpose of heat dissipation of the center temperature of the energy storage battery pack. Furthermore, according to actual requirements, the outer shell of the energy storage battery can be cooled by various other heat dissipation means such as natural air cooling, forced air cooling, liquid cooling, etc.

[0010] As a preferred solution of the utility model, the battery can be a square column battery or a cylindrical battery. Regardless of the shape of the battery, in order to increase the heat dissipation efficiency of the heat spreader and the battery, a heat spreader sleeve that wraps the battery can be further provided on the battery surface, and the heat spreader sleeve is in contact with the third heat spreader, so that the heat is quickly transferred to the third heat spreader through the heat spreader sleeve, thereby transferring the heat out.

[0011] As a preferred solution of the utility model, thermal interface materials are coated between the first and second heat spreaders and the housing. In addition, thermal interface materials are coated between the third heat spreader and the battery. If a heat spreader sleeve is provided on the battery surface, thermal interface materials can also be provided between the heat spreader sleeve and the battery. The thermal interface materials mentioned are materials with thermal conductivity to reduce thermal resistance. The thermal interface materials can be selected from thermal grease, thermal mud, liquid gold, etc., or other materials with similar functions.

[0012] As a preferred embodiment of the present invention, the heat spreader is a flat plate, or may be a heat spreader of other shapes, such as an "I" shape or an "L" shape, and the material used for the heat spreader may be common materials such as copper and aluminum.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The device adopted by the utility model is simple and easy to process, and various components are low-priced and easy to implement; it is easy to operate, convenient and practical; it can transfer the internal heat of the stacked battery pack to the outer shell, so that when other heat dissipation solutions are added to the outer shell, the overall heat dissipation effect of the energy storage battery is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the energy storage battery heat dissipation device of Example 1 of the utility model;

[0016] Figure 2 Schematic diagram of the assembly of the cylindrical battery and the phase change heat transfer device in Example 1;

[0017] Figure 3 This is a schematic diagram of the application of the energy storage battery heat dissipation device of Example 1 for heat dissipation of cylindrical batteries;

[0018] Figure 4 Schematic diagram of the arrangement of the heat spreader sleeve of the cylindrical battery in Example 2;

[0019] Figure 5 This is a schematic diagram of the assembly of the square cylindrical battery and the phase change heat transfer device in Example 3;

[0020] Figure 6 This is a schematic diagram of the application of the energy storage battery heat dissipation device of Example 3 for heat dissipation of square cylindrical batteries.

[0021] In the figure: 1-first heat spreader, 2-second heat spreader, 3-third heat spreader, 31-partition, 4-battery, 41-heat spreader sleeve, 5-housing, 6-thermal interface material, 7-BMS module, 8-bidirectional inverter module. DETAILED DESCRIPTION

[0022] In order to allow those skilled in the art to understand the present invention more clearly and intuitively, the present invention will be further described below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figure 1-2 As shown, a heat dissipation device for a new energy storage battery proposed in this embodiment includes a first vapor chamber 1, a second vapor chamber 2, and a plurality of third vapor chambers 3 arranged between the first vapor chamber 1 and the second vapor chamber 2. The first vapor chamber 1 and the second vapor chamber 2 are vertically arranged and parallel to each other, and the plurality of third vapor chambers 3 are vertically arranged between the first vapor chamber 1 and the second vapor chamber 2 at intervals, and the two ends of each third vapor chamber 3 are connected to the inner plate surfaces of the first vapor chamber 1 and the second vapor chamber 2, respectively;

[0025] The outer surfaces of the first vapor chamber 1 and the second vapor chamber 2 are in contact with the outer shell 5 of the energy storage battery, and the batteries 4 are evenly arranged in the partitions 31 formed by the adjacent third vapor chambers 3 .

[0026] By placing the third heat spreader 3 between the batteries 4, the third heat spreader 3 is in contact with the batteries 4 for heat transfer, while the first heat spreader 1 and the second heat spreader 2 on both sides are in contact with the outer shell 5. Through the temperature uniformity of the phase change heat transfer device, the heat that cannot be dissipated between the tightly arranged batteries 4 during the operation of the energy storage battery is brought to the outer shell 5 through the temperature uniformity of the phase change heat transfer device, thereby eliminating the thermal dead zone and greatly improving the effect of various other heat dissipation means on the heat dissipation of the battery, so as to achieve the purpose of heat dissipation of the center temperature of the energy storage battery pack. This embodiment can dissipate the heat of the outer shell 5 of the energy storage battery through various other heat dissipation means such as natural air cooling, forced air cooling, liquid cooling, etc. according to actual requirements. For example, the energy storage battery is placed in a well-ventilated position, or a fan is added to the outer shell 5 of the energy storage battery, and a liquid cooling plate cooling system can also be set on the outer shell 5.

[0027] In this embodiment, the battery 4 is a cylindrical battery.

[0028] In order to eliminate the thermal resistance of the contact surface, a thermal interface material 6 is applied between the first and second heat spreaders 1 and 2 and the housing 5. In addition, a thermal interface material 6 is also applied between the third heat spreader 3 and the battery 4. The present embodiment does not limit the selection of the thermal interface material 6. According to the actual application process, thermal grease, thermal mud, liquid gold, etc. can be selected, or other materials with similar functions can be selected.

[0029] Figure 3 The actual application scheme of the heat dissipation device for cylindrical battery energy storage products is demonstrated. The BMS module 7, the bidirectional inverter module 8, the battery 4 and the housing 5 form an integral energy storage product structure. The temperature uniformity of the phase change heat transfer device is utilized to transfer the heat of the battery 4 arranged in the middle part of the energy storage product during operation to the housing 5 through the phase change heat transfer device, thereby achieving a heat dissipation effect.

[0030] Example 2

[0031] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that, as a further improvement, since the contact area between the cylindrical battery and the third heat spreader 3 is small, in order to increase the heat dissipation efficiency between the third heat spreader 3 and the battery 4, a heat spreader sleeve 41 that wraps the battery 4 can be set on the surface of the battery 4, and the heat spreader sleeve 41 is in contact with the third heat spreader 3, so that the contact area with the surface of the battery 4 is increased through the heat spreader sleeve 41, and the heat is transferred to the third heat spreader 3 more quickly, thereby transferring the heat out. The heat spreader sleeve 41 can be an integrated structure with the third heat spreader 3. Of course, it can also be similar to embodiment 1, and a thermal interface material 6 can also be set between the heat spreader sleeve 41 and the battery 4.

[0032] Example 3

[0033] like Figure 5 and Figure 6 As shown, the difference between this embodiment and embodiment 1 is that the shape of the battery 4 is a square column battery.

[0034] The above description of the embodiments is to facilitate the understanding and application of the present invention by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the embodiments herein, and improvements and modifications made to the present invention by those skilled in the art based on the disclosure of the present invention should be within the scope of protection of the present invention.

Claims

1. A heat dissipation device for a new energy storage battery, characterized in that: The invention comprises a first vapor chamber, a second vapor chamber and a plurality of third vapor chambers arranged between the first vapor chamber and the second vapor chamber, wherein the first vapor chamber and the second vapor chamber are arranged vertically and parallel to each other, and the plurality of third vapor chambers are arranged vertically between the first vapor chamber and the second vapor chamber at intervals, and the two ends of each third vapor chamber are connected to the inner plate surfaces of the first vapor chamber and the second vapor chamber respectively; The outer surfaces of the first and second vapor chambers are in contact with the outer shell of the energy storage battery, and the batteries are evenly arranged in the partitions formed by the adjacent third vapor chambers.

2. A heat dissipation device for a new energy storage battery according to claim 1, characterized in that: The shell is equipped with a shell heat dissipation device, which is selected from a liquid cooling plate heat dissipation system and / or a fan.

3. The heat dissipation device for a new energy storage battery according to claim 1, characterized in that: The battery is a cylindrical battery or a square cylindrical battery.

4. The heat dissipation device for a new energy storage battery according to claim 1, characterized in that: A heat spreader cover is arranged on the surface of the battery to wrap the battery, and the heat spreader cover is in contact with the third heat spreader.

5. The heat dissipation device for a new energy storage battery according to claim 1, characterized in that: Thermal interface materials are coated between the first and second vapor chambers and the housing. In addition, thermal interface materials are coated between the third vapor chamber and the battery.

6. A heat dissipation device for a new energy storage battery according to claim 5, characterized in that: The thermal interface material is selected from thermal grease, thermal mud, and liquid gold.

7. The heat dissipation device for a new energy storage battery according to claim 1, characterized in that: Each vapor chamber is a flat plate.

8. The heat dissipation device for a new energy storage battery according to claim 1, characterized in that: The material used for each heat spreader is copper or aluminum.

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