A wind-liquid combined battery cooling device

Abstract

The utility model relates to battery heat dissipation technical field discloses a kind of wind liquid combined battery heat dissipation device of closed use, including shell, air cooling heat dissipation component and liquid cooling heat dissipation component, the inside installation of shell is battery pack, the battery pack is made of multiple groups of array setting battery, the shell surface is equipped with two groups of air cooling passage mouth, the air cooling heat dissipation component is connected with air cooling passage mouth, every two groups of battery are all equipped with gap, the gap between multiple groups of battery and two groups of air cooling passage mouth are communicated to form air cooling passage;The liquid cooling heat dissipation component includes liquid cooling flow guide plate, and the liquid cooling flow guide plate is located at the bottom of battery;The heat dissipation device of the utility model uses gas flow to combine heat-conducting exchange sheet, so that the heat of battery pack is more quickly and evenly conducted, while timely taking away heat, the shell can be closed design, and leakage risk is low, can satisfy more use scene under battery heat dissipation problem.

Description

Technical Field

[0001] This utility model belongs to the field of battery heat dissipation technology, specifically relating to a sealed air-liquid combined battery heat dissipation device. Background Technology

[0002] With the development of new energy technologies, battery packs are increasingly being used in various industries. To meet these demands, applications involving high-rate charging and discharging, as well as high-temperature environments, are becoming more frequent. In this context, the battery's thermal management system becomes particularly important, and battery heat dissipation technology is a crucial component of that system.

[0003] Currently, there are several main methods for heat dissipation in new energy batteries. One is direct bonding of metallic thermally conductive materials to the battery for heat conduction. This method carries a high risk, reduces the battery pack's voltage resistance, and results in a small external heat exchange plate area. The second is air cooling, which is divided into direct-blowing and flow-channel types. The former cannot completely seal the battery casing, while the latter suffers from poor heat dissipation due to the low thermal conductivity of air. The third is water cooling, which is divided into immersion and liquid-cooled plate types. The former requires high-precision manufacturing and carries a very high risk of leakage, while the latter, due to interference from the battery's upper tabs, often places the liquid-cooled plate below the battery. As is well known, hot air rises and cold air sinks; therefore, the liquid-cooled plate placed below loses some efficiency during heat exchange.

[0004] For the heat dissipation design of new energy battery boxes, safety, sealing, heat dissipation performance, and processing costs are all important influencing factors. Therefore, a heat dissipation method for new energy batteries is needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a simple and reasonably designed buffer support structure to solve the above problems.

[0006] This utility model achieves the above objectives through the following technical solutions: This utility model provides a closed-use air-liquid combined battery heat dissipation device, including a shell, an air-cooled heat dissipation component and a liquid-cooled heat dissipation component. A battery pack is installed inside the shell. The battery pack consists of multiple arrayed batteries. Two sets of air-cooling channel openings are opened on the surface of the shell. The air-cooled heat dissipation component is connected to the air-cooling channel openings. A gap is provided between every two sets of batteries. The gaps between multiple sets of batteries are connected to the two sets of air-cooling channel openings to form air-cooling channels. The liquid cooling heat dissipation assembly includes a liquid cooling guide plate located at the bottom of the battery. A flow groove is formed inside the liquid cooling guide plate, and a flow pipe is provided inside the flow groove. Liquid cooling channel pipes are connected to the corresponding two side surfaces of the housing. Two sets of liquid cooling channel pipes and flow pipes are connected to form a liquid cooling flow channel. A heat exchange plate is connected to the upper surface of the liquid cooling guide plate. Multiple sets of heat exchange plates are provided and are correspondingly arranged in the gaps between multiple sets of batteries.

[0007] As a further optimization of this utility model, the battery includes a cell and a tab, the tab being connected to the upper surface of the cell, the housing including a top cover and a bottom cover, the surface of the top cover having a through hole, the upper surface of the cell being in close contact with the side surface of the top cover located inside the housing, the tab extending from the through hole to the outside of the housing, and a busbar being connected to the tab located outside the housing.

[0008] As a further optimization of this utility model, the air-cooling channel opening is located on the surface of the bottom shell near the upper part.

[0009] As a further optimization of this utility model, when the housing needs to be enclosed, the air-cooled heat dissipation component is a booster circulating fan, and the booster circulating fan is connected to two sets of air-cooled channel openings; When the housing does not require a closed configuration, the air-cooled heat dissipation component is a common booster fan, and the air-cooled channel opening includes an air-cooled channel inlet and an air-cooled channel outlet, with the common booster fan connected at the air-cooled channel inlet.

[0010] As a further optimization of this utility model, the two sides of the lower part of the heat exchange plate are fixed to the liquid cooling guide plate by heat-conducting filling.

[0011] As a further optimization of this utility model, the thermally conductive filler is a thermally conductive adhesive.

[0012] As a further optimization of this utility model, the upper cover has a groove on one side surface inside the housing corresponding to the position of the battery, and the end of the battery cell with the tab is engaged in the groove.

[0013] As a further optimization of this utility model, the liquid-cooled guide plate includes a plate bottom and a plate cover, the flow groove is disposed on the lower surface of the plate bottom, and the plate cover is fixedly connected to the lower surface of the plate bottom.

[0014] As a further optimization of this utility model, the liquid cooling channel opening is located on the side of the bottom shell surface away from the top cover, and the liquid cooling channel pipe includes a liquid cooling channel pipe inlet and a liquid cooling channel pipe outlet. The liquid cooling heat dissipation assembly also includes a booster circulating water pump, which is connected to the inlet of the liquid cooling channel pipe, and a heat dissipation device is connected to the outlet of the liquid cooling channel pipe.

[0015] The beneficial effects of this utility model are as follows: The heat dissipation device of this utility model uses gas flow combined with heat exchange plates, which makes the heat dissipated by the battery pack more quickly and evenly conducted. While removing heat in time, the casing can be sealed, and the risk of leakage is low. It can meet the battery heat dissipation problem in more usage scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a flow chart of the heat dissipation process of the battery heat dissipation device of this utility model.

[0017] In the diagram: 1. Top cover; 2. Bottom shell; 3. Air-cooled channel inlet; 4. Air-cooled channel outlet; 5. Battery cell; 6. Electrode; 7. Busbar; 8. Bottom of the board; 9. Board cover; 10. Liquid-cooled flow channel outlet; 11. Liquid-cooled flow channel inlet; 12. Heat exchange plate; 13. Heat-conducting filler. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] like Figure 1 and Figure 2 As shown, a sealed air-liquid combined battery heat dissipation device includes a housing, an air-cooled heat dissipation component and a liquid-cooled heat dissipation component. A battery pack is installed inside the housing. The battery pack consists of multiple arrayed batteries. Two sets of air-cooling channel openings are opened on the surface of the housing. The air-cooled heat dissipation component is connected to the air-cooling channel openings. There is a gap between each pair of batteries. The gap between multiple battery sets is connected to the two sets of air-cooling channel openings to form an air-cooling channel. The liquid cooling heat dissipation component includes a liquid cooling guide plate located at the bottom of the battery. A flow groove is formed inside the liquid cooling guide plate, and a flow pipe is provided inside the flow groove. Liquid cooling channel pipes are connected to the corresponding two sides of the housing. Two sets of liquid cooling channel pipes are connected to the flow pipes to form a liquid cooling flow channel. Heat exchange plates 12 are connected to the upper surface of the liquid cooling guide plate. Multiple sets of heat exchange plates 12 are provided and are correspondingly arranged in the gaps between multiple sets of batteries.

[0020] It should be noted that the casing is the battery pack outer shell, which can be multi-layered or single-layered; The battery pack is installed inside the casing and consists of 5 cells arranged and connected with a certain safety gap. The heat exchange plate 12 includes, but is not limited to, the form of a plate mesh, columnar array, etc. Liquid-cooled baffles include, but are not limited to, common low-cost bottom-mounted baffles or custom-shaped baffles, all of which have liquid-cooled flow channels inside. The liquid cooling channel is a fully sealed pipeline, meaning that the liquid cooling channel pipe and the flow pipe are integrated and used as a circulation channel for coolant media. Specifically, the flow pipe is set close to the inner wall of the flow tank.

[0021] It should be further explained that the heat exchange plate 12 of the device does not come into direct contact with the battery. Instead, the hot air is circulated in the housing by a booster fan, thereby accelerating the absorption of hot air by the heat exchange plate 12.

[0022] Furthermore, the battery includes a cell 5 and a tab 6. The tab 6 is connected to the upper surface of the cell 5. The housing includes an upper cover 1 and a bottom cover 2. The surface of the upper cover 1 has a through hole. The upper surface of the cell 5 is in close contact with the side surface of the upper cover 1 located inside the housing. The tab 6 extends from the through hole to the outside of the housing. A busbar 7 is connected to the tab 6 located outside the housing.

[0023] Furthermore, the air-cooling channel opening is located on the surface of the bottom shell 2 near the upper part.

[0024] It should be noted that when the battery pack needs to dissipate heat, the heat will be released in the air-cooling channel between the cells 5, and the hot air will accumulate at the top. Therefore, the bottom shell 2 of the air-cooling channel opening is located at the top.

[0025] Furthermore, when the casing needs to be enclosed, the air-cooled heat dissipation component is a booster circulating fan, which is connected to two sets of air-cooled channel openings; When the casing does not require a closed configuration, the air-cooled heat dissipation component is a regular booster fan, and the air-cooled channel includes an air-cooled channel inlet 3 and an air-cooled channel outlet 4. The regular booster fan is connected to the air-cooled channel inlet 3.

[0026] It should be noted that the gaps between the batteries serve as air-cooling channels to allow the flow of gaseous media. The booster circulating fan is the power source for the gaseous heat-conducting medium that circulates air inside when the casing is closed.

[0027] Specifically, when the battery pack needs to dissipate heat, the heat is released in the air-cooling channel between the cells 5 when the casing is closed and there are no heat dissipation holes. The hot air accumulates at the top. At this time, the booster circulation fan circulates the internal hot gas medium evenly. The heat generated by the battery itself, the gas medium, the heat exchange plate 12 and the heat-conducting filler 13 is transferred to the coolant medium located in the guide plate at the bottom of the battery. In this way, the heat can be conducted to the coolant more quickly and the heat accumulation around the cells 5 is reduced. If the casing has heat dissipation holes that do not need to be sealed, simply replacing the booster fan with a regular booster fan will allow the gas medium to directly carry away some of the heat through the air-cooling channel, further improving the heat dissipation capacity of the entire system.

[0028] Furthermore, the two sides of the lower part of the heat exchange plate 12 are fixed to the liquid cooling guide plate by the heat-conducting filler 13.

[0029] Furthermore, the thermally conductive filler 13 is a thermally conductive adhesive.

[0030] It should be noted that the heat exchange plate 12 is fixed to the liquid cooling heat transfer plate with thermal adhesive, which can increase the contact area between the liquid cooling heat transfer plate and the heat source, and transfer heat to the coolant medium in a timely manner.

[0031] Furthermore, the top cover 1 has a groove on one side surface inside the housing corresponding to the position of the battery, and one end of the battery cell 5 with the tab 6 is engaged in the groove.

[0032] Furthermore, the liquid-cooled guide plate includes a bottom plate 8 and a cover plate 9, with a flow channel located on the lower surface of the bottom plate 8 and the cover plate 9 fixedly connected to the lower surface of the bottom plate 8.

[0033] Furthermore, the liquid cooling channel opening is located on the side of the bottom shell 2 away from the top cover 1, and the liquid cooling channel pipe includes a liquid cooling channel pipe inlet 11 and a liquid cooling channel pipe outlet 10. The liquid cooling heat dissipation component also includes a booster circulating water pump, which is connected to the inlet of the liquid cooling channel pipe, and a heat dissipation device is connected to the outlet of the liquid cooling channel pipe.

[0034] It should be noted that after heat is transferred to the coolant medium located in the bottom guide plate of the battery, the booster circulating water pump drives the coolant to circulate in the liquid cooling channel inside the liquid cooling guide plate. Finally, the heat is dissipated to the outside by the heat dissipation device on the outside of the shell. Specifically, the outlet end of the booster circulating water pump is connected to the end of the liquid cooling channel inlet pipe 11 located outside the shell, and the inlet end is connected to the water tank. The booster circulating water pump delivers the coolant medium in the water tank to the liquid cooling channel. After the coolant medium absorbs heat, it is delivered to the heat dissipation device for heat dissipation, and then delivered to the liquid cooling channel through the water tank, thus circulating for heat dissipation.

[0035] It should be further explained that the heat dissipation device refers to a device installed outside the housing to allow the coolant medium to exchange heat with the outside of the housing. In this embodiment, the heat dissipation device can be a heat sink.

[0036] In addition, the flow rate of the heat transfer medium (gas medium, coolant medium) in the air-cooled channel and the liquid-cooled channel can be adjusted by the pressure of the booster fan, the booster fan and the booster water pump, so as to control the flow rate of the heat transfer medium in the air-cooled channel and the liquid-cooled channel, thereby adjusting the heat dissipation effect. Both the air-cooled channel and the liquid-cooled channel can withstand a certain pressure and flow rate of the medium.

[0037] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A sealed, air-hydraulic combined battery cooling device, characterized in that, The device includes a housing, an air-cooled heat dissipation component, and a liquid-cooled heat dissipation component. A battery pack is installed inside the housing. The battery pack consists of multiple arrayed batteries. Two sets of air-cooling channel openings are opened on the surface of the housing. The air-cooled heat dissipation component is connected to the air-cooling channel openings. A gap is provided between every two sets of batteries. The gaps between multiple sets of batteries are connected to the two sets of air-cooling channel openings to form air-cooling channels. The liquid cooling heat dissipation assembly includes a liquid cooling guide plate located at the bottom of the battery. A flow groove is formed inside the liquid cooling guide plate, and a flow pipe is provided inside the flow groove. Liquid cooling channel pipes are connected to the corresponding two side surfaces of the housing. Two sets of liquid cooling channel pipes and flow pipes are connected to form a liquid cooling flow channel. A heat exchange plate is connected to the upper surface of the liquid cooling guide plate. Multiple sets of heat exchange plates are provided and are correspondingly arranged in the gaps between multiple sets of batteries.

2. The enclosed, air-liquid combined battery cooling device according to claim 1, characterized in that: The battery includes a cell and tabs. The tabs are connected to the upper surface of the cell. The housing includes a top cover and a bottom cover. The surface of the top cover has a through hole. The upper surface of the cell is in close contact with the side surface of the top cover located inside the housing. The tabs extend from the through hole to the outside of the housing. A busbar is connected to the tab located outside the housing.

3. The enclosed, air-liquid combined battery cooling device according to claim 2, characterized in that: The air-cooling channel opening is located on the surface of the bottom shell near the upper part.

4. The enclosed, air-liquid combined battery cooling device according to claim 1, characterized in that: When the housing needs to be enclosed, the air-cooled heat dissipation component is a booster circulating fan, and the booster circulating fan is connected to two sets of air-cooled channel openings; When the housing does not require a closed configuration, the air-cooled heat dissipation component is a common booster fan, and the air-cooled channel opening includes an air-cooled channel inlet and an air-cooled channel outlet, with the common booster fan connected at the air-cooled channel inlet.

5. A sealed, air-hydraulic combined battery cooling device according to claim 1, characterized in that: The two sides of the lower part of the heat exchange plate are fixed to the liquid cooling guide plate by heat-conducting filler.

6. A sealed, air-hydraulic combined battery cooling device according to claim 5, characterized in that: The thermally conductive filler is a thermally conductive adhesive.

7. A sealed, air-hydraulic combined battery cooling device according to claim 2, characterized in that: The top cover is located on one side surface inside the housing and has a groove at the position corresponding to the battery. The end of the battery cell with the tab is snapped into the groove.

8. A sealed, air-hydraulic combined battery cooling device according to claim 1, characterized in that: The liquid-cooled guide plate includes a plate bottom and a plate cover. The flow channel is located on the lower surface of the plate bottom, and the plate cover is fixedly connected to the lower surface of the plate bottom.

9. A sealed, air-hydraulic combined battery cooling device according to claim 2, characterized in that: The liquid cooling channel opening is located on the bottom shell surface away from the top cover, and the liquid cooling channel pipe includes a liquid cooling channel pipe inlet and a liquid cooling channel pipe outlet; The liquid cooling heat dissipation assembly also includes a booster circulating water pump, which is connected to the inlet of the liquid cooling channel pipe, and a heat dissipation device is connected to the outlet of the liquid cooling channel pipe.

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