Immersed energy storage heat management device
By heating or cooling the liquid cooling plate using temperature control components, the problem of high equipment cost in immersion cooling methods is solved, achieving efficient cell thermal management and integrated cooling and fire protection, thus reducing equipment costs.
Patent Information
- Application Number
- CN202422906900.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Immersion cooling requires high-power circulating pumps, which increases the cost of refrigeration equipment and piping. Furthermore, existing technologies struggle to balance efficient heat exchange with cost reduction.
Temperature control components are used to heat or cool the liquid cooling plate, and thermal management of the battery module is achieved through insulating coolant. This simplifies the structure, eliminates the coolant exchanger and circulation pump, and uses temperature sensors to adjust the temperature in real time.
It achieves efficient cell thermal management, reduces equipment costs, simplifies the structure, integrates cooling and fire suppression functions, and improves system efficiency.
Smart Images
Figure CN223651466U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery energy storage technical field, specifically, relate to a kind of immersion energy storage thermal management device. BACKGROUND
[0002] In the energy storage field, the best temperature operating range of battery cell is 20-35℃, and the battery cell is generally managed by heat in the way of air cooling and liquid cooling. Compared with air cooling and traditional liquid cooling, immersion liquid cooling has high heat dissipation efficiency, small temperature difference, and is beneficial to prolong the cycle life of battery cell. Moreover, the new type of cooling liquid has the characteristics of fire resistance and high temperature resistance, which can play the role of cooling and fire fighting. This type of new energy storage cooling scheme.
[0003] However, the immersion cooling method means that the volume of the insulating coolant is very large. Not only is a heat exchanger needed for heat exchange, but if the circulation of the coolant is used to achieve heat exchange, a circulating pump is needed to provide a large amount of kinetic energy to make the coolant flow, thereby increasing the cost of refrigeration equipment and pipelines. SUMMARY
[0004] The utility model aims to provide an immersion energy storage thermal management device that can achieve efficient heat exchange and simplify the thermal management system to reduce costs.
[0005] To achieve the above-mentioned purpose, the utility model provides an immersion energy storage thermal management device, which comprises a battery compartment, a battery module arranged in the battery compartment, and a liquid cooling plate. The battery compartment is filled with insulating coolant. The insulating coolant immerses the battery module and the liquid cooling plate. The liquid cooling plate is connected to a temperature control assembly. The temperature control assembly is used to heat or cool the liquid cooling plate.
[0006] Preferably, the temperature control assembly comprises an electronic expansion valve, a condensing mechanism, a compressor and a gas-liquid separator connected in sequence by pipes. The two ends of the liquid cooling plate are connected to the electronic expansion valve and the gas-liquid separator by pipes. A four-way reversing valve is arranged between the pipes connecting the gas-liquid separator and the liquid cooling plate and the pipes connecting the compressor and the condensing mechanism.
[0007] Preferably, the condensing mechanism comprises a condenser and a condensing fan connected to each other. The two ends of the condenser are connected to the electronic expansion valve and the four-way reversing valve by pipes.
[0008] Preferably, a plurality of shelves are arranged in the battery compartment. The plurality of shelves are arranged vertically in the battery compartment. The number of battery modules is the same as the number of shelves. The battery modules are arranged on the corresponding shelves.
[0009] Preferably, the liquid cooling plate is arranged at the middle part of the battery compartment.
[0010] Preferably, the sealing level of the battery compartment is IP68.
[0011] Preferably, a temperature sensor is further arranged in the battery compartment, and the temperature sensor is electrically connected with the temperature control assembly.
[0012] The immersion type energy storage thermal management device has the advantages that the liquid cooling plate is heated or refrigerated by the temperature control assembly to heat or refrigerate the insulating coolant, and then the battery module is heated or cooled, so that the battery cell is efficiently heat managed, the liquid cooling plate does not need to be added to each battery module, the cooling and fire-fighting integration can be realized, the overall structure is simple, the exchanger, the circulating pump and other components for configuring the coolant and the refrigerant are not needed, and the equipment cost is reduced.
[0013] Other features and advantages of the present application will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS
[0014] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:
[0015] Fig. 1 A structure schematic view of the immersion type energy storage thermal management device of an embodiment of the present application is shown;
[0016] Fig. 2 A schematic view of the internal structure of the battery compartment of an embodiment of the present application is shown. DETAILED DESCRIPTION
[0017] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.
[0018] Please refer to Figs. 1-2 The embodiment discloses an immersion type energy storage thermal management device, which comprises a battery compartment 1, a battery module 2 arranged in the battery compartment 1 and a liquid cooling plate 3, insulating coolant is filled in the battery compartment 1, the insulating coolant immerses the battery module 2 and the liquid cooling plate 3, the liquid cooling plate 3 is connected with a temperature control assembly 4, and the temperature control assembly 4 is used for heating or refrigerating the liquid cooling plate 3.
[0019] The insulating cooling liquid is a kind of liquid with high heat capacity, good insulation performance, high boiling point and low evaporation at room temperature. The application of the insulating cooling liquid in the device can better heat exchange the battery module 2, the convection heat transfer coefficient is high, and the system refrigeration efficiency is high. In the embodiment, when heating is needed, the temperature control assembly 4 heats the liquid cooling plate 3, and then heats the insulating cooling liquid, so as to realize the heating of the battery module 2; when refrigeration is needed, the temperature control assembly 4 refrigerates the liquid cooling plate 3, and then refrigerates the insulating cooling liquid, so as to realize the cooling of the battery module 2. The battery core is efficiently heat managed, the liquid cooling plate does not need to be added to each battery module, the cooling and fire-fighting can be realized, the overall structure is simple, the components such as the cooling liquid and refrigerant exchanger and circulating pump do not need to be configured, and the equipment cost is reduced.
[0020] Specifically, the temperature control assembly 4 includes an electronic expansion valve 41, a condensing mechanism 42, a compressor 43 and a gas-liquid separator 44 connected in sequence through pipelines. The two ends of the liquid cooling plate 3 are respectively connected with the electronic expansion valve 41 and the gas-liquid separator 44 through pipelines. The pipeline between the gas-liquid separator 44 and the liquid cooling plate 3 and the pipeline between the compressor 43 and the condensing mechanism 43 are provided with a four-way reversing valve 45. Further, the condensing mechanism 42 includes a condenser 421 and a condensing fan 422 connected with each other. The two ends of the condenser 421 are respectively connected with the electronic expansion valve 41 and the four-way reversing valve 45 through pipelines.
[0021] In the embodiment, when the battery compartment 1 needs refrigeration, the refrigerant is compressed into the condenser 421 by the compressor 43. Due to the limitation of the electronic expansion valve 41, the refrigerant forms a liquid in the condenser 421. After passing through the electronic expansion valve 41, the refrigerant enters the liquid cooling plate 3. Due to the decrease of the pressure in the liquid cooling plate 3, the refrigerant evaporates (gasifies), so as to realize the refrigeration in the liquid cooling plate 3. The liquid cooling plate 3 is immersed in the insulating cooling liquid, so as to cool the insulating liquid cooling plate and further realize the cooling of the battery module 2.
[0022] When the battery compartment 1 needs heating, the refrigerant is compressed into the liquid cooling plate 3 by the compressor 43 (the four-way reversing valve 45 adjusts the channel). Due to the limitation of the electronic expansion valve 41, the refrigerant is compressed and liquefied in the liquid cooling plate 3. Heat is released during the liquefaction of the refrigerant, so as to realize the heating in the liquid cooling plate 3. The liquid cooling plate 3 is immersed in the insulating cooling liquid, and the temperature of the insulating cooling liquid rises with the liquid cooling plate, so as to realize the heating of the battery module 2.
[0023] Please refer to Fig. 2 The battery compartment 1 is provided with a plurality of shelves 11. The plurality of shelves 11 are vertically arranged in the battery compartment 1. The number of the battery modules 2 is the same as the number of the shelves 11. The battery modules 2 are arranged on the corresponding shelves 11. The liquid cooling plate 3 is arranged in the middle of the battery compartment 1. The liquid cooling plate 3 does not need to be arranged under each battery module 2, so as to reduce the production cost.
[0024] Preferably, the sealing level of the battery compartment 1 is IP68, avoiding insulation cooling liquid leakage and heat loss, reducing energy loss.
[0025] Preferably, the immersion type energy storage thermal management device of the embodiment further comprises a temperature sensor arranged in the battery compartment 1, and the temperature sensor is electrically connected with the temperature control assembly 4. The temperature sensor monitors the temperature of the insulation cooling liquid in the battery compartment 1 in real time. When the temperature is too high, the temperature sensor sends a signal to the temperature control assembly 4, and the temperature control assembly 4 cools the liquid cooling plate 3, thereby realizing cooling of the battery module 2; when the temperature is low, the temperature sensor sends a signal to the temperature control assembly 4, and the temperature control assembly 4 heats the liquid cooling plate 3, thereby realizing heating of the battery module 2.
[0026] In summary, the embodiment heats or cools the liquid cooling plate 3 through the temperature control assembly 4 to realize heating or cooling of the insulation cooling liquid, and then heats or cools the battery module 2, thereby efficiently performing thermal management on the battery cell, without increasing the liquid cooling plate 3 for each battery module 2, realizing cooling and fire-fighting integration, and having a simple overall structure, without the need to configure an exchanger, a circulating pump and other components for exchanging cooling liquid and refrigerant, thereby reducing equipment cost.
[0027] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the utility model within the technical concept of the utility model, and these simple modifications all belong to the protection scope of the utility model. In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the utility model will not further describe various possible combination manners.
[0028] In addition, various different embodiments of the utility model can also be combined arbitrarily, as long as they do not deviate from the idea of the utility model, and they should also be considered as disclosed contents of the utility model.
Claims
1. An immersion energy storage thermal management device, characterized by, The application relates to a battery compartment, a battery module arranged in the battery compartment and a liquid cooling plate, the battery compartment being filled with insulating cooling liquid, the insulating cooling liquid immersing the battery module and the liquid cooling plate, and a temperature control assembly being connected to the liquid cooling plate, the temperature control assembly being used for heating or refrigerating the liquid cooling plate.
2. The submerged thermal energy storage management device of claim 1, wherein, The temperature control assembly comprises an electronic expansion valve, a condensing mechanism, a compressor and a gas-liquid separator which are sequentially connected through pipelines, two ends of the liquid cooling plate are respectively connected to the electronic expansion valve and the gas-liquid separator through pipelines, and a four-way reversing valve is arranged between the pipeline between the gas-liquid separator and the liquid cooling plate and the pipeline between the compressor and the condensing mechanism.
3. The submerged thermal energy storage management device of claim 2, wherein, The condensing mechanism comprises a condenser and a condensing fan which are connected to each other, and two ends of the condenser are respectively connected to the electronic expansion valve and the four-way reversing valve through pipelines.
4. The submerged thermal energy storage management device of claim 1, wherein, A plurality of racks are arranged in the battery compartment, the racks are vertically arranged in the battery compartment, the number of the battery modules is the same as the number of the racks, and the battery modules are arranged on the corresponding racks.
5. The submerged thermal energy storage heat management device of claim 1, wherein, The liquid cooling plate is arranged in the middle of the battery compartment.
6. The submerged thermal energy storage management device of claim 1, wherein, The sealing level of the battery compartment is IP68.
7. The submerged thermal energy storage management device according to any of claims 1-6, characterized in that, A temperature sensor is further arranged in the battery compartment, and the temperature sensor is electrically connected to the temperature control assembly.