Liquid cooling device for energy storage battery pack
By introducing a one-way sealing valve and a snap-on connection structure into the liquid cooling device of the energy storage battery pack, combined with an efficient heat dissipation component, the problems of inconvenient cooling medium input and insufficient heat dissipation are solved, convenient injection and discharge and efficient heat dissipation are achieved, and the safety and functionality of the battery pack are improved.
Patent Information
- Application Number
- CN202422502035.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-16
AI Technical Summary
The liquid cooling system of the existing energy storage battery pack has problems such as inconvenient cooling medium input, closed process affecting the process and insufficient heat dissipation effect, which affects the performance and safety of the battery pack.
A liquid cooling device for an energy storage battery pack was designed. It adopts a one-way conducting sealing valve and a snap-on connection structure, combined with a U-shaped cover and liquid cooling system components, including a compressor, a condensing assembly and a controllable heating block, to achieve convenient injection and discharge of the cooling medium. The lifting and lowering of the sealing valve is controlled by a pneumatic rod. In conjunction with an efficient cooling fan and a high-density bonded fin radiator, it supports heating, cooling and self-circulation functions.
It realizes convenient injection and discharge of cooling medium, improves heat dissipation effect, reduces costs, improves the safety and functionality of the battery pack, and meets different usage needs.
Smart Images
Figure CN223487126U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery pack temperature control technology, and in particular relates to a liquid cooling device for energy storage battery packs. Background Technology
[0002] An energy storage battery pack is a device used to store electrical energy and is widely used in electric vehicles, renewable energy, grid regulation, and other fields. The structural principles of an energy storage battery pack mainly include individual battery cells, a battery management system, a cooling system, and electrical connections.
[0003] Currently, to prevent batteries from overheating during operation, energy storage battery packs typically incorporate a heat dissipation system. This system maintains the normal operating temperature of the batteries through thermal management, extending battery life. Existing technologies commonly use liquid cooling systems for energy storage battery packs, which involve installing a liquid cooling plate and then introducing a cooling medium into the plate to cool the battery pack. However, this approach still presents several problems in practical use. Firstly, the cooling medium is usually injected through an injection hole, which then needs to be sealed after injection, thus hindering the cooling medium's input process and failing to meet operational requirements. Secondly, existing conventional liquid cooling methods are relatively limited in their effectiveness in cooling the battery pack, particularly in terms of heat dissipation, thus impacting the battery pack's performance. Utility Model Content
[0004] This utility model addresses the technical problems existing in the use of the aforementioned battery packs by proposing a liquid cooling device for energy storage battery packs. This device is reasonably designed, simple in structure, and easy to process. On the one hand, it enables convenient injection or discharge of the cooling medium, improving the rationality of the device's design. On the other hand, it effectively enhances the cooling and heat dissipation of the device components, ensuring the safety of the battery pack, achieving cost reduction and efficiency improvement, and enhancing functionality to effectively meet usage requirements.
[0005] To achieve the above objectives, the present invention adopts a liquid cooling device for an energy storage battery pack, comprising an energy storage battery pack body, the energy storage battery pack body including a housing for accommodating battery components, a liquid cooling plate disposed below the housing, a liquid injection hole disposed on one side of the liquid cooling plate, a sealing valve with one-way conduction function disposed on the liquid injection hole, a U-shaped protective cover disposed on one side of the housing, a liquid cooling system component disposed inside the protective cover, the liquid cooling system component including a mounting plate, a compressor disposed on one side of the mounting plate, a condensing component disposed on the other side of the mounting plate, a liquid outlet pipe disposed between the liquid cooling plate and the compressor, a connecting pipe disposed between the compressor and the condensing component, a liquid cooling inlet pipe disposed between the condensing component and the liquid cooling plate, a controllable heating block disposed on the liquid cooling inlet pipe, and heat dissipation holes opened on the protective cover corresponding to the liquid cooling system component.
[0006] Preferably, the sealing valve includes a sleeve, and a sealing block with an L-shaped cross-section is provided at the upper part of the sleeve. A pneumatic rod is provided inside the sleeve, and its lower end is connected to the lower inner end of the liquid cooling plate. A plug is provided at the output end of the pneumatic rod, and its cross-section is T-shaped. The outer circumference of the long side of the plug is smaller than the inner diameter of the sleeve.
[0007] Preferably, a drain outlet is provided inside the cover located below the liquid cooling system component, and the lower inner end face of the cover is designed to be inclined from the side near the liquid cooling plate towards the arc.
[0008] Preferably, a functional area is provided on the outer end face of the housing away from the cover. A warning sign is provided at the geometric center of the functional area. An MSD and an explosion-proof valve are respectively provided on the upper and lower sides of one side of the warning sign. A positive and negative aviation connector are respectively provided on the upper and lower sides of one side of the explosion-proof valve. A fire sprinkler and a communication aviation connector are respectively provided on the upper and lower sides of the other side of the warning sign. A fire detector and warning label are provided on one side of the communication aviation connector.
[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0010] 1. This utility model provides a liquid cooling device for energy storage battery packs. Utilizing the established liquid cooling system components, it saves costs. This design can replace traditional liquid cooling unit designs, significantly reducing costs. The overall design is simple and allows for rapid installation. Furthermore, the liquid cooling system components have heating, heat dissipation, and cooling functions to meet different usage needs. The established sealing valve uses pneumatic pressure to achieve lifting conditions, and the external uses a snap-fit connection structure for convenient liquid injection and drainage. Therefore, in the energy storage and other battery pack industries, this design can achieve cost reduction and efficiency improvement. This device is rationally designed, simple in structure, and easy to process. On the one hand, it allows for convenient injection or discharge of the cooling medium, improving the rationality of the device's design; on the other hand, it effectively improves the cooling and heat dissipation effect of the equipment components, ensuring the safety of the battery pack, achieving cost reduction and efficiency improvement, and enhancing functionality to effectively meet usage requirements. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 A bottom view schematic diagram of a liquid cooling device for an energy storage battery pack;
[0013] Figure 2 This is a partial internal structure diagram of a liquid cooling device for an energy storage battery pack from another perspective.
[0014] Figure 3 This is a partial structural diagram of a liquid cooling system component.
[0015] Figure 4 A side view of part of the internal structure of a liquid cooling system component;
[0016] Figure 5 for Figure 2 A magnified view of a portion of the structure at point A in the middle;
[0017] In the above figures, 1. Shell; 2. Liquid cooling plate; 21. Injection hole; 3. Sealing valve; 31. Sleeve; 32. Sealing block; 33. Pneumatic rod; 34. Plug; 4. Protective cover; 41. Heat dissipation hole; 42. Drain outlet; 5. Liquid cooling system components; 51. Mounting plate; 52. Compressor; 53. Condensation assembly; 54. Liquid outlet pipe; 55. Connecting pipe; 56. Liquid cooling inlet pipe; 57. Controllable heating block; 6. Warning sign; 7. MSD; 8. Explosion-proof valve; 9. Positive aviation connector; 10. Negative aviation connector; 11. Fire sprinkler head; 12. Communication aviation connector; 13. Fire detection and warning label. Detailed Implementation
[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Examples, such as Figures 1 to 5As shown, a liquid cooling device for an energy storage battery pack includes an energy storage battery pack body. The energy storage battery pack body includes a shell 1 for housing the battery components. The shell 1 is made of thermoplastic material and has a heat-insulating coating on its outer surface to prevent external heat from entering. A liquid cooling plate 2 is disposed below the shell 1. The liquid cooling plate 2 adopts a dual-channel design as in the prior art, which ensures more uniform and efficient heat dissipation within the shell 1. A liquid injection hole 21 is disposed on one side of the upper part of the liquid cooling plate 2. A sealing valve 3 with a one-way conduction function is disposed on the liquid injection hole 21 to facilitate the input of cooling medium into the liquid cooling plate 2. At the same time, it can also improve the sealing performance of the liquid cooling plate 2, prevent leakage of cooling medium, and improve the functionality of the device. The housing 1 has a U-shaped cover 4 on one side, and a liquid cooling system assembly 5 is installed inside the cover 4. The liquid cooling system assembly 5 includes a mounting plate 51, a compressor 52 on one side of the mounting plate 51, and a condenser assembly 53 on the other side of the mounting plate 51. A liquid outlet pipe 54 is provided between the liquid cooling plate 2 and the compressor 52. A connecting pipe 55 is provided between the compressor 52 and the condenser assembly 53. A liquid cooling inlet pipe 56 is provided between the condenser assembly 53 and the liquid cooling plate 2. A controllable heating block 57 is provided on the liquid cooling inlet pipe 56. A heat dissipation hole 41 is provided on the cover 4 corresponding to the liquid cooling system assembly 5. In order to further improve the rationality and functionality of the device, the heat dissipation hole is located on the inner side of the cover 4. 41 dustproof cotton pads can be applied to meet outdoor operating conditions and fully guarantee usage requirements. Specifically, the condenser assembly 53 consists of a high-density bonded finned radiator and an eight-channel liquid exchanger to provide high cooling capacity in a relatively small size. A cooling fan is also installed externally to improve heat dissipation within the equipment. Furthermore, the equipment supports external communication for easy control of fan speed to adjust overall heat dissipation capacity. The compressor 52 is a miniature refrigeration compressor that supports multiple communication methods. Internally, it consists of various precision components, enabling efficient, stable, controllable, and low-noise operation. The compressor 52 also has external... The device features a semi-circular protective shell to prevent the airflow from the condenser from causing circuit aging. Simultaneously, based on fluid dynamics design, the water vapor and hot / cold air generated by the airflow from the condenser assembly 53 can be blown out of the cabinet along the shell, preventing damage to the precision components of the compressor 52. Furthermore, the controllable heating block 57 also supports external communication. When the cell temperature is too low, the external system sends heating information to the heater, which then heats the battery. Once the temperature returns to normal, an external command is issued, and the heater stops heating. With the aforementioned components, the liquid cooling system component 5 in the energy storage battery pack can support three functional modes: battery pack heating, cooling, and self-circulation, greatly improving the device's functionality.
[0021] To facilitate the input of cooling medium, especially for rapid injection or discharge, the sealing valve 3 includes a sleeve 31. A snap-fit groove is provided on the lower outer side of the sleeve 31 for easy connection to an external snap-fit pipeline. This snap-fit pipeline design is a mature and commonly used technology, readily known to those skilled in the art. An L-shaped sealing block 32 is installed at the upper part of the sleeve 31. A pneumatic rod 33 is installed inside the sleeve 31, its lower end connected to the lower inner side of the liquid cooling plate 2. The pneumatic rod 33 contains a pneumatic system that uses high-pressure nitrogen to provide support and facilitate lifting and lowering operations. A plug 34 with a T-shaped cross-section is installed at the output end of the pneumatic rod 33. A sealing ring (not shown in the figure) is provided between the outer periphery of the plug 34 and the inner side of the sealing block 32 to ensure the plug 34 is in a static position. The sealing effect in the stopped state meets the usage requirements. The outer circumference of the long side of the plug 34 is smaller than the inner diameter of the sleeve 31. Specifically, when injecting cooling medium into the liquid cooling plate 2, the pipeline is first inserted into the sealing valve 3 and connected to the sleeve 31 in a snap-fit manner. When the external cooling medium is transported, it will press the plug 34 and cause the pneumatic rod 33 to press down. When the plug 34 moves down and separates from the sealing block 32, the cooling medium will be input into the liquid cooling plate 2 through the gap between the plug 34 and the sleeve 31. After the cooling medium input is completed, the input of the external cooling medium is stopped. Due to the removal of the external pressure, the pneumatic rod 33 will extend and drive the plug 34 to re-insert into the sealing block 32, thereby completing the sealing of the sealing valve 3, avoiding the possibility of leakage of cooling medium in the liquid cooling plate 2, ensuring the sealing effect of the device, and is simple and convenient to operate with strong functionality.
[0022] To further improve the rationality of the device setup, a drain outlet 42 is provided inside the cover 4 located below the liquid cooling system component 5. The lower inner surface of the cover 4 is designed to be inclined from the side near the liquid cooling plate 2 towards the arc. The inclination angle of the bottom of the cover 4 is in the range of 4° to 5°. Its main function is to allow the condensation and water droplets generated inside to flow along the inclined slope to the drain outlet 42, thereby realizing the drainage of the cabin.
[0023] To ensure the energy storage battery pack has good functionality, a functional area is provided on the outer end face of the shell 1 away from the cover 4. A warning sign 6 is provided at the geometric center of the functional area. An MSD7 and an explosion-proof valve 8 are respectively provided on the upper and lower sides of one side of the warning sign 6. A positive terminal connector 9 and a negative terminal connector 10 are respectively provided on the upper and lower sides of one side of the explosion-proof valve 8. A fire sprinkler head 11 and a communication terminal connector 12 are respectively provided on the upper and lower sides of the other side of the warning sign 6. A fire detection and warning label 13 is provided on one side of the communication terminal connector 12. The MSD7, positive terminal connector 9, negative terminal connector 10 and communication interface are provided to fully meet the basic operating conditions of the energy storage battery pack. In addition, a fire detection module and a fire sprinkler are provided to react quickly after detecting a fire. Furthermore, the surface is also provided with safety signs, electric shock signs and other warning signs to ensure safe use.
[0024] In the above process: the established liquid cooling system component 5 saves costs. This design can replace the traditional liquid cooling unit design, significantly reducing costs. The overall design is simple and allows for rapid installation. Furthermore, the liquid cooling system component 5 has heating, heat dissipation, and cooling functions to meet different usage needs. The established sealing valve 3 uses pneumatic pressure to achieve lifting conditions, and the external uses a snap-fit connection structure for convenient liquid injection and drainage. Therefore, in the energy storage and other battery pack industries, this design can achieve cost reduction and efficiency improvement. This device is rationally designed, simple in structure, and easy to process. On the one hand, it allows for convenient injection or discharge of the cooling medium, improving the rationality of the device's setup; on the other hand, it effectively enhances the cooling and heat dissipation effect of the equipment components, ensuring the safety of the battery pack, achieving cost reduction and efficiency improvement, and enhancing functionality to effectively meet usage requirements.
[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A liquid cooling device for an energy storage battery pack, comprising an energy storage battery pack body, the energy storage battery pack body including a housing for accommodating battery components, characterized in that, A liquid cooling plate is disposed at the bottom of the housing. A liquid injection hole is disposed on one side of the liquid cooling plate, and a sealing valve with one-way conduction function is disposed on the liquid injection hole. A U-shaped protective cover is disposed on one side of the housing, and a liquid cooling system assembly is disposed inside the protective cover. The liquid cooling system assembly includes a mounting plate. A compressor is disposed on one side of the mounting plate, and a condenser assembly is disposed on the other side of the mounting plate. A liquid outlet pipe is disposed between the liquid cooling plate and the compressor. A connecting pipe is disposed between the compressor and the condenser assembly. A liquid cooling inlet pipe is disposed between the condenser assembly and the liquid cooling plate. A controllable heating block is disposed on the liquid cooling inlet pipe. Heat dissipation holes are opened on the protective cover corresponding to the liquid cooling system assembly.
2. The liquid cooling device for an energy storage battery pack according to claim 1, characterized in that, The sealing valve includes a sleeve, and a sealing block with an L-shaped cross-section is provided at the upper part of the sleeve. A pneumatic rod is provided inside the sleeve, and its lower end is connected to the lower inner end of the liquid cooling plate. A plug is provided at the output end of the pneumatic rod, and its cross-section is T-shaped. The outer circumference of the long side of the plug is smaller than the inner diameter of the sleeve.
3. The liquid cooling device for an energy storage battery pack according to claim 2, characterized in that, A drain outlet is provided inside the cover located below the liquid cooling system component, and the lower inner surface of the cover is designed to be inclined from the side near the liquid cooling plate towards the arc.
4. The liquid cooling device for an energy storage battery pack according to claim 3, characterized in that, A functional area is provided on the outer end face of the housing away from the protective cover. A warning sign is provided at the geometric center of the functional area. An MSD and an explosion-proof valve are respectively provided on the upper and lower sides of one side of the warning sign. A positive and negative aviation connector are respectively provided on the upper and lower sides of one side of the explosion-proof valve. A fire sprinkler and a communication aviation connector are respectively provided on the upper and lower sides of the other side of the warning sign. A fire detector and warning label are provided on one side of the communication aviation connector.