Immersed liquid cooling household energy storage system

Abstract

The utility model relates to the technical field of energy storage systems, and particularly discloses an immersed liquid-cooled household energy storage system. The system comprises a heat management module, a PCS energy storage converter module and a battery cell PACK module which are stacked from top to bottom, a heat exchanger is arranged in a heat management module case, a liquid storage tank is arranged on one side of the heat exchanger, a PCS energy storage converter power module is arranged in a PCS energy storage converter module case, the liquid storage tank is communicated with the PCS energy storage converter module case, and the battery cell PACK module is connected with the PCS energy storage converter power module. Liquid is arranged in the PCS energy storage converter power module, the PCS energy storage converter power module is immersed in the liquid, a battery cell module and a DCDC power module are arranged in the battery cell PACK module case, the battery cell module and the DCDC power module are immersed in the liquid, and heat exchange is performed on the PCS energy storage converter module and the battery cell PACK module immersed in the liquid through continuous circulation of the liquid, so that the system operates in a proper temperature range. And the service life of the household energy storage system is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and particularly relates to an immersion liquid-cooled household energy storage system. Background Art

[0002] The heat generation of household energy storage systems is relatively large. At present, the heat dissipation measures for household energy storage systems mainly include air-cooled heat dissipation or liquid-cooled heat dissipation. For example, the Chinese utility model patent with the publication (announcement) number CN218783088U discloses a household energy storage system, in which the heat dissipation surfaces of multiple heat dissipation modules are respectively in contact with the household energy storage system to cool each module of the household energy storage system.

[0003] In the prior art, the heat dissipation surface of the heat dissipation module is in contact with the household energy storage system for cooling, and the uneven temperature of the household energy storage system during cooling affects the service life of the system, and the heat dissipation efficiency is low, which affects the service life of the household energy storage system. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an immersion liquid-cooled household energy storage system to improve the service life of the household energy storage system.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An immersion liquid-cooled household energy storage system includes a heat management module, a PCS energy storage converter module, and a battery cell PACK module stacked from top to bottom. The heat management module includes a heat management module chassis, and a heat exchanger is arranged in the heat management module chassis. A liquid storage tank is arranged on one side in the length direction of the heat exchanger, and the liquid storage tank is communicated with the heat exchanger through a first pipeline;

[0007] The PCS energy storage converter module includes a PCS energy storage converter module chassis, and a PCS energy storage converter power module is arranged in the PCS energy storage converter module chassis. The liquid storage tank is communicated with the PCS energy storage converter module chassis through a second pipeline, and the PCS energy storage converter power module is immersed in the liquid;

[0008] The battery cell PACK module includes a battery cell PACK module chassis, and a battery cell module and a DCDC power module are arranged in the battery cell PACK module chassis. The second pipeline is communicated with the battery cell PACK module chassis, and a water pump is arranged on the second pipeline. The battery cell module and the DCDC power module are immersed in the liquid;

[0009] On one side of the thermal management module away from the liquid storage tank, a third pipeline is provided. The thermal management module is connected to the PCS energy storage converter module chassis and the battery cell PACK module chassis through the third pipeline. The liquid in the liquid storage tank enters the PCS energy storage converter module chassis and the battery cell PACK module chassis respectively through the second pipeline, and then flows into the liquid storage tank through the first pipeline after passing through the thermal management module via the third pipeline.

[0010] The thermal management module, the PCS energy storage converter module, and the battery cell PACK module are stacked and connected through the second pipeline and the third pipeline. The liquid in the liquid storage tank circulates through each module by means of a water pump. The PCS energy storage converter module chassis and the battery cell PACK module chassis are filled with liquid. After the PCS energy storage converter power module, the battery cell module, and the DCDC power module are immersed in the liquid for heat exchange with the liquid, the liquid is discharged through the third pipeline and heat-exchanged by the heat exchanger, and then the liquid flows into the liquid storage tank. Through the continuous circulation of the liquid, heat exchange is carried out on the PCS energy storage converter power module, the battery cell module, and the DCDC power module immersed in the liquid, enabling the household energy storage system to operate within a suitable temperature range and extending the service life of the household energy storage system.

[0011] Optionally, a first electrical connection system, a second electrical connection system, and a third electrical connection system are respectively provided on the thermal management module chassis, the PCS energy storage converter module chassis, and the battery cell PACK module chassis. The first electrical connection system is electrically connected to the water pump and the heat exchanger. The second electrical connection system is electrically connected to the PCS energy storage converter power module. The third electrical connection system is electrically connected to the battery cell module and the DCDC power module. The first electrical connection system, the second electrical connection system, and the third electrical connection system are electrically connected in sequence.

[0012] Optionally, multiple battery cell PACK modules are provided. The multiple battery cell PACK modules are stacked vertically in sequence, and adjacent battery cell PACK modules are electrically connected in sequence through the third electrical connection system.

[0013] Users can expand the household energy storage system according to actual needs, improve the output of the household energy storage system, and enhance the applicability of the household energy storage system.

[0014] Optionally, the heat exchanger is electrically connected to the first electrical connection system, and the heat exchanger is used to heat or cool the water flowing out of the third pipeline.

[0015] Optionally, a plurality of water outlet pipes are provided on the second pipeline. The second pipeline is communicated with the PCS energy storage converter module chassis and the battery cell PACK module chassis respectively through the water outlet pipes. A plurality of water inlet pipes are provided on the third pipeline. The third pipeline is communicated with the PCS energy storage converter module chassis and the battery cell PACK module chassis respectively through the water inlet pipes.

[0016] Optionally, a water inlet pipe solenoid valve is provided on the second pipeline between two adjacent water inlet pipes, and a water outlet pipe solenoid valve is provided on the third pipeline between two adjacent water outlet pipes.

[0017] Optionally, a temperature sensor is provided on the water outlet pipe solenoid valve. The water inlet pipe solenoid valve, the water outlet pipe solenoid valve and the temperature sensor are respectively electrically connected to the first electrical connection system.

[0018] When the temperature sensor detects that the water temperature of the liquid in the third pipeline exceeds the optimal temperature range of the household energy storage system, the water outlet pipe solenoid valve and the water pump are opened simultaneously to make the liquid circulate, and the heat exchanger heats or cools the liquid according to the temperature of the temperature sensor.

[0019] Optionally, decorative parts are provided on both sides in the length direction of the heat management module chassis, the PCS energy storage converter module chassis and the battery cell PACK module chassis.

[0020] The beneficial effects of the present utility model are as follows: The heat management module, the PCS energy storage converter module and the battery cell PACK module are stacked and connected through the second pipeline and the third pipeline. The liquid in the liquid storage tank circulates through the water pump in each module. The PCS energy storage converter module chassis and the battery cell PACK module chassis are filled with liquid. After the PCS energy storage converter power module, the battery cell module and the DCDC power module are immersed in the liquid and exchange heat with the liquid, the liquid is discharged through the third pipeline and exchanges heat through the heat exchanger, and then the liquid flows into the liquid storage tank. Through the continuous circulation of the liquid, heat exchange is carried out on the battery cell PACK module chassis provided with the battery cell module and the DCDC power module immersed in the liquid, so that the household energy storage system operates within a suitable temperature range and the service life of the household energy storage system is improved. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the lifting assembly of the present utility model;

[0023] Figure 3 It is a schematic installation diagram of the structure of the first electrical connection system of the present utility model;

[0024] Figure 4Schematic structural installation diagram of the second electrical connection system of the present utility model;

[0025] Figure 5 Schematic structural installation diagram of the third electrical connection system of the present utility model.

[0026] The reference numerals and names in the figure are corresponding as follows: 1. Thermal management module chassis; 11. Heat exchanger; 12. Liquid storage tank; 13. First pipeline; 14. Second pipeline; 141. Water outlet pipe; 142. Water outlet pipe solenoid valve; 15. Third pipeline; 151. Water inlet pipe; 152. Water inlet pipe solenoid valve; 16. Water pump; 2. PCS energy storage converter module chassis; 21. PCS energy storage converter power module; 3. Cell PACK module chassis; 31. Cell module; 32. DCDC power module; 41. First electrical connection system; 42. Second electrical connection system; 43. Third electrical connection system; 5. Decorative part. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figure 1-2 , the present utility model provides a technical solution:

[0029] An immersion liquid-cooled household energy storage system, including a thermal management module, a PCS energy storage converter module, and a cell PACK module stacked from top to bottom. The thermal management module includes a thermal management module chassis 1. The heat exchanger 11 and the liquid storage tank 12 are detachably connected by bolts at the rear side inside the thermal management module chassis 1. The heat exchanger 11 is arranged on the left side of the liquid storage tank 12. The heat exchanger 11 is used to heat or cool the water flowing out of the third pipeline 15. The liquid storage tank 12 and the heat exchanger 11 are communicated through the first pipeline 13. Both ends of the first pipeline 13 are fixedly connected to the liquid storage tank 12 and the heat exchanger 11 respectively. In this embodiment, the liquid in the liquid storage tank 12 is a fluorinated liquid.

[0030] The PCS energy storage converter module includes the PCS energy storage converter module chassis 2. The bottom of the thermal management module chassis 1 is detachably connected to the top of the PCS energy storage converter module chassis 2 by locking bolts. The PCS energy storage converter power module 21 is detachably connected to the bottom inside the PCS energy storage converter module chassis 2 by bolts. The liquid storage tank 12 is communicated with the PCS energy storage converter module chassis 2 through the second pipeline 14. One end of the second pipeline 14 is fixedly connected to one side of the liquid storage tank 12, and the other end of the second pipeline 14 passes through the left side of the thermal management module chassis 1 and extends downward.

[0031] The battery cell PACK module includes the battery cell PACK module chassis 3. The top of the battery cell PACK module chassis 3 is detachably connected to the PCS energy storage converter module chassis 2 by locking bolts. The battery cell module 31 and the DCDC power module 32 are detachably connected to the bottom inside the battery cell PACK module chassis 3 by bolts. A plurality of water outlet pipes 141 are arranged on the second pipeline 14. The second pipeline 14 is communicated with the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3 respectively through the water outlet pipes 141. One end of the water outlet pipe 141 is fixedly connected to the second pipeline 14, and the other end of the water outlet pipe 141 is inserted into the left sides of the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3 respectively and is fixedly connected to the side walls of the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3. The liquid enters the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3 through the water outlet pipes 141 and submerges the PCS energy storage converter power module 21, the battery cell module 31 and the DCDC power module 32 in the liquid.

[0032] On one side of the thermal management module away from the liquid storage tank 12, there is a third pipeline 15. One end of the third pipeline 15 is fixedly connected to the left side of the heat exchanger 11, and the other end of the third pipeline 15 passes through the left side of the thermal management module chassis 1 and extends downward. A plurality of water inlet pipes 151 are arranged on the third pipeline 15. One end of the water inlet pipe 151 is fixedly connected to the third pipeline 15, and the other end of the water inlet pipe 151 is inserted into the left sides of the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3 respectively and is fixedly connected to the side walls of the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3. The liquid in the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3 enters the third pipeline 15 through the water inlet pipes 151 and then enters the heat exchanger 11 for heat exchange, and then enters the liquid storage tank 12 through the first pipeline 13 for circulation.

[0033] The thermal management module is connected to the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3 through the third pipeline 15. The liquid in the liquid storage tank 12 enters the PCS energy storage converter module chassis 2 and the battery cell PACK module chassis 3 respectively through the second pipeline 14, and then flows into the liquid storage tank 12 through the first pipeline 13 after passing through the thermal management module through the third pipeline 15.

[0034] On the right side walls of the thermal management module chassis 1, the PCS energy storage converter module chassis 2, and the battery cell PACK module chassis 3, a first electrical connection system 41, a second electrical connection system 42, and a third electrical connection system 43 are respectively provided. The first electrical connection system 41 is electrically connected to the water pump 16 and the heat exchanger 11. The second electrical connection system 42 is electrically connected to the PCS energy storage converter power module 21. The third electrical connection system 43 is electrically connected to the battery cell module 31 and the DCDC power module 32 respectively. The first electrical connection system 41, the second electrical connection system 42, and the third electrical connection system 43 are electrically connected in sequence. There are multiple battery cell PACK modules. The multiple battery cell PACK module chassis 3 are stacked vertically in sequence and are detachably connected by locking bolts. The adjacent battery cell PACK modules are electrically connected in sequence through the third electrical connection system 43.

[0035] An inlet pipe solenoid valve 152 is provided on the second pipeline 14 between two adjacent inlet pipes 151. An outlet pipe solenoid valve 142 is provided on the third pipeline 15 between two adjacent outlet pipes 141. A temperature sensor is provided on the outlet pipe solenoid valve 142. The inlet pipe solenoid valve 152, the outlet pipe solenoid valve 142, and the temperature sensor are respectively electrically connected to the first electrical connection system 41.

[0036] Decorative parts 5 are provided on both the left and right sides of the thermal management module chassis 1, the PCS energy storage converter module chassis 2, and the battery cell PACK module chassis 3. The decorative parts 5 are detachably connected to the outsides of the thermal management module chassis 1, the PCS energy storage converter module chassis 2, and the battery cell PACK module chassis 3 respectively by locking bolts, and are used to protect the second pipeline 14, the third pipeline 15, the first electrical connection system 41, the second electrical connection system 42, and the third electrical connection system 43.

[0037] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An immersion liquid-cooled household energy storage system, characterized in that: The invention comprises a thermal management module, a PCS energy storage converter module and a battery PACK module which are stacked from top to bottom, wherein the thermal management module comprises a thermal management module chassis (1), a heat exchanger (11) is arranged in the thermal management module chassis (1), a liquid storage tank (12) is arranged on one side in the length direction of the heat exchanger (11), and the liquid storage tank (12) is connected to the heat exchanger (11) through a first pipe (13); The PCS energy storage converter module comprises a PCS energy storage converter module chassis (2), a PCS energy storage converter power module (21) is arranged in the PCS energy storage converter module chassis (2), the liquid storage tank (12) is connected to the PCS energy storage converter module chassis (2) via a second pipe (14), and the PCS energy storage converter power module (21) is immersed in liquid; The battery cell PACK module comprises a battery cell PACK module chassis (3), a battery cell module (31) and a DCDC power module (32) are arranged in the battery cell PACK module chassis (3), the second pipeline (14) is in communication with the battery cell PACK module chassis (3), a water pump (16) is arranged on the second pipeline (14), and the battery cell module (31) and the DCDC power module (32) are immersed in liquid; A third pipe (15) is provided on a side of the thermal management module away from the liquid storage tank (12); the thermal management module is connected to the PCS energy storage inverter module chassis (2) and the battery pack module chassis (3) through the third pipe (15); the liquid in the liquid storage tank (12) enters the PCS energy storage inverter module chassis (2) and the battery pack module chassis (3) respectively through the second pipe (14), and then flows into the liquid storage tank (12) through the first pipe (13) after passing through the thermal management module through the third pipe (15).

2. The immersion liquid-cooled household energy storage system according to claim 1, characterized in that: The thermal management module chassis (1), the PCS energy storage converter module chassis (2) and the battery pack module chassis (3) are respectively provided with a first electrical connection system (41), a second electrical connection system (42) and a third electrical connection system (43); the first electrical connection system (41) is electrically connected to the water pump (16) and the heat exchanger (11); the second electrical connection system (42) is electrically connected to the PCS energy storage converter power module (21); the third electrical connection system (43) is electrically connected to the battery cell module (31) and the DCDC power module (32); the first electrical connection system (41), the second electrical connection system (42) and the third electrical connection system (43) are electrically connected in sequence.

3. The immersion liquid-cooled household energy storage system according to claim 2, characterized in that: A plurality of the battery cell PACK modules are provided, and the plurality of battery cell PACK modules are stacked up and down in sequence, and adjacent battery cell PACK modules are electrically connected in sequence through a third electrical connection system (43).

4. The immersion liquid-cooled household energy storage system according to claim 2, characterized in that: The heat exchanger (11) is electrically connected to the first electrical connection system (41), and the heat exchanger (11) is used to heat or cool water flowing out of the third pipe (15).

5. The immersion liquid-cooled household energy storage system according to claim 1, characterized in that: The second pipeline (14) is provided with a plurality of water outlet pipes (141), and the second pipeline (14) is connected to the PCS energy storage converter module chassis (2) and the battery pack module chassis (3) respectively through the water outlet pipes (141); the third pipeline (15) is provided with a plurality of water inlet pipes (151), and the third pipeline (15) is connected to the PCS energy storage converter module chassis (2) and the battery pack module chassis (3) respectively through the water inlet pipes (151).

6. The immersion liquid-cooled household energy storage system according to claim 5, characterized in that: A water inlet pipe electromagnetic valve (152) is provided on the second pipe (14) between two adjacent water inlet pipes (151), and a water outlet pipe electromagnetic valve (142) is provided on the third pipe (15) between two adjacent water outlet pipes (141).

7. The immersion liquid-cooled household energy storage system according to claim 6, characterized in that: The water outlet pipe solenoid valve (142) is provided with a temperature sensor, and the water inlet pipe solenoid valve (152), the water outlet pipe solenoid valve (142) and the temperature sensor are electrically connected to the first electrical connection system (41) respectively.

8. The immersion liquid-cooled household energy storage system according to claim 1, characterized in that: Decorative parts (5) are provided on both sides of the thermal management module chassis (1), the PCS energy storage converter module chassis (2) and the battery cell PACK module chassis (3) in the length direction.

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