Lithium battery liquid cooling energy storage box with integrally formed water cooling plate
By combining immersive liquid cooling and conventional liquid cooling in the lithium battery liquid-cooled energy storage box, using water-cooled plates and refrigerant circulation pumps or stirring devices, the problem of difficulty in taking away heat from lithium batteries is solved, and efficient cooling and extension are achieved Battery life effect.
Patent Information
- Application Number
- CN202323331537.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-07
AI Technical Summary
When the battery cell capacity is large, the quantity is large and the charge and discharge rate is high, conventional liquid cooling is difficult to effectively take away heat, resulting in an increase in the battery temperature and affecting the lifespan.
Design a liquid-cooled lithium battery energy storage box with integrated water-cooled plate, combining immersion liquid cooling and conventional liquid cooling, through the joint design of water-cooled plate and immersion coolant, the refrigerant-carrying circulation pump or stirring device can be used to achieve efficient heat dissipation. .
It improves the cooling effect and extends the service life of lithium batteries. Through the circulating flow of immersed coolant and the structural design of the water-cooled plate, efficient heat removal and heat dissipation are achieved, significantly reducing the battery temperature.
Smart Images
Figure CN222320342U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery energy storage, and in particular to a lithium battery liquid-cooled energy storage box with a water-cooling plate integrally formed. Background Art
[0002] With the large-scale promotion and application of renewable energy such as solar energy and wind energy, energy storage technology has also ushered in a great development. Among them, lithium batteries have gradually become the mainstream product of energy storage due to their high energy density, long service life, high rated voltage, low self-discharge rate, light weight, green environmental protection and almost no water consumption in production.
[0003] At present, there are two main cooling methods for lithium batteries: air cooling and liquid cooling. Among them, the air cooling method has a simple structure and relatively low cost, but the cooling effect is not good; the liquid cooling method has a relatively good temperature control effect, but when the battery cell capacity is large, the number is large, and the battery charge and discharge rate is high, the battery generates too much heat, and the conventional liquid cooling method is difficult to effectively remove the heat in time, resulting in an increase in battery temperature and affecting the battery life. Utility Model Content
[0004] The utility model aims to provide a lithium battery liquid cooling energy storage box with a water cooling plate integrally formed, which has a reasonable structural design, integrates conventional liquid cooling and immersion liquid cooling, improves the cooling effect, and prolongs the battery life.
[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions:
[0006] A lithium battery liquid-cooled energy storage box with an integrated water-cooling plate, the energy storage box consists of a top plate, a side plate and a bottom plate, a lithium battery pack is placed in the energy storage box, the side plate and the bottom plate are both made of water-cooling plates and the side plate and the bottom plate are welded into an integral structure, the lithium battery pack is immersed in an immersion coolant filled in the energy storage box, a coolant inlet and a coolant outlet are respectively provided on the side plates of the energy storage box, the coolant flows through the coolant inlet, the side plate, the bottom plate, the side plate and the coolant outlet in sequence to complete a heat dissipation cycle, and a liquid cooling circulation device is provided in the energy storage box.
[0007] Furthermore, one of the side panels of the energy storage box is made of an aluminum alloy plate, the top panel and the side panels of the energy storage box are respectively fixed by threaded connection, and the contact portion between the top panel and the side panels is sealed by a sealing strip.
[0008] Furthermore, the immersion cooling liquid is a fluorinated liquid.
[0009] Furthermore, the coolant is ethylene glycol solution or other antifreeze liquid.
[0010] Furthermore, the liquid cooling circulation device is a circulation pump or a stirring device.
[0011] Compared with the prior art, the utility model has the following advantages:
[0012] The utility model discloses a lithium battery liquid-cooled energy storage box with an integrated water-cooling plate. The structure is reasonably designed and integrates two cooling forms, conventional liquid cooling and immersion liquid cooling, to improve the cooling effect and extend the battery life. Specifically, the lithium battery energy storage box of the utility model is a box structure in which both the bottom plate and the side plate are formed in one piece using water-cooling plates. The lithium battery pack in the box is immersed in the immersion coolant. The heat generated by the lithium battery pack is taken away by the circulation of the immersion coolant and further released to the outside through the water-cooling plates of the bottom plate and the side plate, thereby achieving the effect of efficient heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model is a schematic diagram of the overall structure of a lithium battery liquid-cooled energy storage box with a water-cooling plate integrally formed.
[0014] Figure 2 It is a schematic diagram of the longitudinal section structure of the utility model.
[0015] Figure numerals: 1. side panel; 2. bottom panel; 3. lithium battery pack; 4. coolant inlet; 5. coolant outlet; 6. liquid cooling circulation device; 7. immersion coolant. DETAILED DESCRIPTION
[0016] The embodiments of the present utility model are described in further detail below in conjunction with the accompanying drawings.
[0017] like Figure 1 , 2 As shown, a lithium battery liquid-cooled energy storage box with an integrated water-cooling plate is provided. The energy storage box is composed of a top plate, a side plate 1 and a bottom plate 2. A lithium battery pack 3 is placed in the energy storage box. The side plate 1 and the bottom plate 2 are both made of water-cooling plates and the side plate 1 and the bottom plate 2 are welded into an integral structure. The flow channels in the side plate 1 and the bottom plate 2 can be interconnected. The lithium battery pack 3 is immersed in an immersion coolant 7 filled in the energy storage box. A coolant inlet 4 and a coolant outlet 5 are respectively provided on the side plate 1 of the energy storage box. The coolant flows through the coolant inlet 4, the side plate 1, the bottom plate 2, the side plate 1 and the coolant outlet 5 in sequence to complete a heat dissipation cycle. A liquid cooling circulation device 6 is provided in the energy storage box.
[0018] Furthermore, in order to facilitate wiring in the energy storage box, one of the side panels 1 of the energy storage box is made of an aluminum alloy plate, the top panel and the side panel 1 of the energy storage box are respectively fixed by threaded connection, and the contact portion between the top panel and the side panel 1 is sealed by a sealing strip.
[0019] Preferably, the immersion cooling liquid 7 is a fluorinated liquid. The coolant is an ethylene glycol solution or other antifreeze liquid. The liquid cooling circulation device 6 is a circulation pump or a stirring device.
[0020] Preferably, the water cooling plate adopts a harmonica tube structure, including a liquid inlet main pipe and a liquid outlet main pipe, and a plurality of branch pipes are arranged between the liquid inlet main pipe and the liquid outlet main pipe, and each branch pipe is connected in parallel. The coolant enters the water cooling plate from the liquid inlet main pipe, is then divided into the parallel branch pipes, and finally converges to the liquid outlet main pipe to take the heat out of the energy storage box.
[0021] Specifically, the energy storage box is injected with immersion coolant 7, which can maintain a large contact area between the immersion coolant 7 and the lithium battery pack 3, and between the immersion coolant 7 and the water cooling plate, thereby improving the heat exchange capacity. The immersion coolant 7 is generally selected as an insulating, flame-retardant fluorinated liquid. A circulating pump or stirring device is placed in the energy storage box to maintain the immersion coolant 7 in the energy storage box in a flowing state, further enhancing the heat exchange capacity and improving the temperature consistency of the lithium battery pack 3.
[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A lithium battery liquid-cooled energy storage box with a water-cooled plate integrally formed, the energy storage box is composed of a top plate, a side plate and a bottom plate, a lithium battery pack is placed in the energy storage box, and the characteristics are: The side plate and the bottom plate are both made of water-cooled plates and are welded to form an integral structure. The lithium battery pack is immersed in the immersion coolant filled in the energy storage box. The side plates of the energy storage box are respectively provided with a coolant inlet and a coolant outlet. The coolant flows through the coolant inlet, the side plate, the bottom plate, the side plate, and the coolant outlet in sequence to complete a heat dissipation cycle. A liquid cooling circulation device is provided in the energy storage box. One of the side plates of the energy storage box is made of an aluminum alloy plate, the top plate and the side plates of the energy storage box are respectively fixed by threaded connection, and the contact portion between the top plate and the side plates is sealed by a sealing strip.
2. The lithium battery liquid-cooled energy storage box with a water-cooled plate integrally formed according to claim 1, characterized in that: The immersion cooling liquid is fluorinated liquid.
3. The lithium battery liquid-cooled energy storage box with a water-cooled plate integrally formed according to claim 1, characterized in that: The coolant is ethylene glycol solution or antifreeze solution.
4. The lithium battery liquid-cooled energy storage box with a water-cooled plate integrally formed according to claim 1, characterized in that: The liquid cooling circulation device is a circulation pump or a stirring device.