An immersion liquid-cooled energy storage system

Abstract

The present invention discloses an immersion-type liquid-cooled energy storage system, comprising a plurality of liquid-cooled boxes, wherein batteries are arranged in the liquid-cooled boxes, a first conductive sheet and a second conductive sheet are arranged on one side of the liquid-cooled boxes, the positive electrode of the battery is electrically connected to the first conductive sheet, the negative electrode of the battery is electrically connected to the second conductive sheet, the liquid-cooled boxes are connected to a liquid inlet pipeline and a liquid outlet pipeline, the energy storage system further comprises a cooling device, the input end of the cooling device is connected to the liquid outlet pipeline, the output end of the cooling device is connected to the liquid inlet pipeline, a circulation loop is formed between the liquid-cooled boxes, the liquid outlet pipeline, the cooling device, and the liquid inlet pipeline, a coolant is arranged in the circulation loop, the liquid-cooled boxes are provided with a control mechanism for controlling the flow rate of the coolant in the liquid inlet pipeline, a temperature measuring device for measuring the temperature of the coolant in the liquid-cooled boxes is provided in the liquid-cooled boxes, and the temperature measuring device is electrically connected to the control mechanism. The present invention proposes an immersion-type liquid-cooled energy storage system with higher heat dissipation efficiency and smaller temperature differences between batteries.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage systems, and in particular to an immersion liquid-cooled energy storage system. Background Art

[0002] Energy storage systems are installed in containers and transported to their destinations by vehicle to power electrical equipment. During operation, the batteries within the energy storage system generate significant heat, which needs to be dissipated promptly to prevent dangerously high battery temperatures. Existing energy storage systems use air cooling, which is inefficient and results in significant temperature differences between cells, leading to varying degrees of degradation and inconvenient battery maintenance. Summary of the Invention

[0003] In order to solve the shortcomings of the existing technology, such as low heat dissipation efficiency and large temperature difference between batteries, the present invention proposes an immersion liquid-cooled energy storage system with higher heat dissipation efficiency and small temperature difference between batteries.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An immersion liquid-cooled energy storage system includes several liquid cooling boxes, batteries are arranged in the liquid cooling boxes, a first conductive sheet and a second conductive sheet are arranged on one side of the liquid cooling box, the positive electrode of the battery is electrically connected to the first conductive sheet, and the negative electrode of the battery is electrically connected to the second conductive sheet. The liquid cooling box is connected to a liquid inlet pipeline and a liquid outlet pipeline. The energy storage system also includes a cooling device, the input end of the cooling device is connected to the liquid outlet pipeline, and the output end of the cooling device is connected to the liquid inlet pipeline. A circulation loop is formed between the liquid cooling box, the liquid outlet pipeline, the cooling device, and the liquid inlet pipeline. Cooling liquid is arranged in the circulation loop. The liquid cooling box is provided with a control mechanism for controlling the flow rate of the cooling liquid in the liquid inlet pipeline. A temperature measuring device for measuring the temperature of the cooling liquid in the liquid cooling box is provided in the liquid cooling box, and the temperature measuring device is electrically connected to the control mechanism.

[0006] Through the above arrangement, the liquid cooling box is used to accommodate batteries, and the batteries output electrical energy to the outside through the first conductive sheet and the second conductive sheet. There is coolant in the liquid cooling box, and the batteries are immersed in the coolant. Liquid cooling is used to cool the batteries, which has a better cooling effect. Specifically, the coolant enters the liquid cooling box through the liquid inlet pipe and cools the batteries. The coolant then enters the cooling device through the liquid outlet pipe. The cooling device includes a condenser and a compressor connected to the condenser. The cooling device reduces the temperature of the coolant through the condenser. The cooled coolant re-enters the liquid cooling box through the liquid inlet pipe. This reciprocating cycle can continuously cool the batteries. In the present application, each battery is installed in an independent liquid cooling box, which can reduce heat conduction between the batteries and thus reduce the impact of each other on the batteries. In addition, each liquid cooling box is provided with a temperature measuring device, which can be configured as a temperature sensor. The temperature measuring device can be used to determine the temperature within each liquid cooling box, and the flow rate of the liquid inlet pipe is controlled according to the temperature of the coolant within the liquid cooling box. Specifically, as the coolant temperature in the liquid cooling box increases, the control mechanism increases the flow rate in the liquid inlet pipe, thereby lowering the coolant temperature and, in turn, the battery temperature. Similarly, when the temperature in the liquid cooling box drops to a certain level, the control mechanism reduces the flow rate in the liquid inlet pipe, thereby slowing the heat dissipation of the battery and raising the temperature in the liquid cooling box. This arrangement ensures that the temperature of each battery is essentially the same and that the temperature in each liquid cooling box is maintained within a certain range, ultimately ensuring that each battery experiences a similar degradation rate and maintains a more suitable operating environment.

[0007] Furthermore, the control mechanism is a solenoid valve.

[0008] Through the above-mentioned setting, the solenoid valve can be obtained from the market, which facilitates the production and maintenance of this application.

[0009] Furthermore, the energy storage system also includes a support seat, which is fixedly connected to a pipe extending vertically, and an end plate is fixedly connected to the upper end of the pipe. A cavity is formed between the end plate, the pipe and the support seat, and a partition is fixedly connected in the pipe. The partition divides the cavity into a first channel and a second channel. The first channel and the second channel both extend vertically. The support seat is provided with a third channel and a fourth channel. The liquid cooling box is fixedly connected to the outside of the pipe, and the liquid cooling boxes are gap-fitted. The liquid inlet pipeline is connected to the output end of the cooling device through the first channel, the third channel, and the liquid outlet pipeline is connected to the input end of the cooling device through the second channel, the fourth channel.

[0010] This arrangement allows the support base to support the pipes, which extend vertically. This facilitates the vertical installation of the liquid cooling box on the pipes, thus reducing the footprint of the energy storage system. Furthermore, the pipes also transport the coolant. The outer sides of the liquid cooling boxes are exposed to the air, allowing for air cooling. Furthermore, the separation of the liquid cooling boxes prevents heat conduction between them, further reducing heat conduction between the batteries.

[0011] Furthermore, a first wall channel connected to the first channel is provided on the wall of the pipeline, and a second wall channel connected to the second channel is provided on the wall of the pipeline. The liquid inlet pipeline is connected to the first channel through the first wall channel, and the liquid outlet pipeline is connected to the second channel through the second wall channel.

[0012] Through the above arrangement, the first wall channel is used to connect the first channel and the liquid inlet pipeline, and the second wall channel is used to connect the second channel and the liquid outlet pipeline.

[0013] Furthermore, the liquid cooling box includes a base fixedly connected to the outer side of the pipeline, a first sleeve with an opening facing away from the pipeline is slidably connected to the side of the base away from the pipeline, a second sleeve with an opening facing the pipeline is sleeved on the side of the first sleeve away from the pipeline, the first sleeve and the second sleeve are slidably connected to form a accommodating cavity for accommodating batteries, the first conductive sheet and the second conductive sheet are arranged at the bottom of the second sleeve, the control mechanism includes a first guide tube and a second guide tube fixedly connected to the side of the base away from the pipeline, a liquid inlet pipeline is formed inside the first guide tube, a liquid outlet pipeline is formed inside the second guide tube, a first control sleeve and a second control sleeve are fixedly connected to the bottom of the first sleeve, the first guide tube passes through the first control sleeve and is slidably connected to the first control sleeve, the second guide tube passes through the second control sleeve and is slidably connected to the second control sleeve, one end of the first guide tube away from the pipeline is fixedly connected to the first closing plate, and one end of the second guide tube away from the pipeline is fixedly connected to the second closing plate, and a plurality of liquid inlets are sequentially arranged on the wall of the first guide tube along the extension direction of the first guide tube. , a plurality of liquid outlets are sequentially provided on the wall of the second guide tube along the extension direction of the second guide tube, the accommodating chamber is connected to the liquid inlet pipeline through at least one liquid inlet, and the accommodating chamber is connected to the liquid outlet pipeline through at least one liquid outlet, the base and the second sleeve are fixedly connected by a connecting rod, the base is provided with a driving device for driving the first sleeve to slide relative to the second sleeve. When the first sleeve slides relative to the second sleeve, the first guide tube slides relative to the first control sleeve, and the second guide tube slides relative to the second control sleeve. The upper end of the first channel is slidably connected to the first piston, and the upper end of the second channel is slidably connected to the second piston. The first piston divides the first channel into a first air-containing chamber located on the upper side of the first piston and a first liquid-containing chamber located below the first piston. The liquid inlet pipeline is connected to the first liquid-containing chamber, and the second piston divides the second channel into a second air-containing chamber located on the upper side of the second piston and a second liquid-containing chamber located below the second piston. The liquid outlet pipeline and the second liquid-containing chamber are connected. The energy storage system also includes an air pump, and the first air-containing chamber and the second air-containing chamber are both connected to the air pump.

[0014] Through the above arrangement, the base is used to support the first sleeve, and the first sleeve and the second sleeve can be relatively retracted to achieve a change in the volume of the accommodating chamber. Specifically, when the volume of the accommodating chamber increases, the volume of the coolant in the accommodating chamber increases, which can accelerate the heat dissipation of the battery. On the other hand, the surface area of the accommodating chamber increases, which can accelerate the heat dissipation of the liquid cooling box in the air, thereby reducing the temperature inside the liquid cooling box. Correspondingly, when the volume of the accommodating chamber decreases, the heat dissipation speed of the liquid cooling box in the air slows down, and the heat dissipation of the battery will also slow down. A support plate is fixedly connected to the second sleeve, and the battery is mounted on the support plate. The support plate can prevent interference between the battery and the first sleeve during the movement of the first sleeve. The first closing plate is used to close the end of the first guide tube away from the pipeline, so that the coolant can only enter the accommodating chamber from the liquid inlet. The second closing plate is used to close the end of the second guide tube away from the pipeline, so that the coolant can only enter the second guide tube from the liquid outlet. The first and second liquid-containing chambers are filled with coolant, while the first and second air-containing chambers are filled with air. An air pump is used to pressurize the first and second air-containing chambers. Under the action of air pressure, the first piston downwardly squeezes the coolant in the first liquid-containing chamber, and the second piston downwardly squeezes the coolant in the second liquid-containing chamber, thereby maintaining the coolant pressure in the circulation loop. During normal battery operation, the coolant is output from the output end of the cooling device, passes through the third channel, the first liquid-containing chamber, the first wall channel, the liquid inlet pipeline, and the liquid inlet port, and then enters the containing chamber. The coolant then passes through the liquid outlet, the liquid outlet pipeline, the second wall channel, the second liquid-containing chamber, and the fourth channel and returns to the cooling device. When the temperature within the accommodating chamber rises to a certain level, the drive device drives the first sleeve toward the base, increasing the volume of the accommodating chamber. Simultaneously, the first sleeve drives the first control sleeve toward the base, exposing more liquid inlets within the accommodating chamber. The second sleeve drives the second control sleeve toward the base, exposing more liquid outlets within the accommodating chamber. This increases the flow rates in the inlet and outlet pipes, accelerating the refresh rate of the coolant within the accommodating chamber, thereby lowering the chamber's temperature and accelerating heat dissipation in the battery. Conversely, when the temperature within the accommodating chamber drops to a certain level, the drive device drives the first sleeve toward the second sleeve, decreasing the volume of the accommodating chamber. Simultaneously, the flow rates in the inlet and outlet pipes decrease, slowing heat dissipation in the battery and increasing the chamber's temperature. During this process, as the volume of the accommodating chamber increases, the volumes of the first and second liquid accommodating chambers decrease. Consequently, the first and second pistons move downward, increasing the volumes of the first and second air accommodating chambers. Conversely, as the volume of the accommodating chamber decreases, the volumes of the first and second air accommodating chambers decrease. Through the above arrangement, the flow rate of the liquid inlet and outlet pipelines can be changed by the driving device, and the volume of the accommodating chamber can also be changed, thereby accelerating and slowing down the heat dissipation of the battery in multiple aspects, thereby making the temperature in the accommodating chamber more quickly regulated, thereby improving the efficiency of temperature regulation of the energy storage system.

[0015] Furthermore, an air hole for connecting the first air accommodating cavity and the second air accommodating cavity is provided at the upper end of the partition, and the air pump is connected to the second air accommodating cavity.

[0016] With the above arrangement, the air pump can directly deliver air to the second air chamber to increase the air pressure therein, or deliver air to the first air chamber through the air hole to increase the air pressure therein. The arrangement of the air hole ensures that the air pressures in the first and second air chambers are substantially the same.

[0017] Furthermore, the driving device is an electric cylinder with one end connected to the base, and the other end of the electric cylinder is connected to the first sleeve.

[0018] Through the above arrangement, the electric cylinder can be easily purchased on the market, thereby facilitating the production and maintenance of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of Example 1 of the present application.

[0020] Figure 2 This is a schematic diagram of Example 2 of the present application.

[0021] Figure 3 For this application Figure 2 Enlarged view of point A.

[0022] Figure 4 This is a top view of Example 2 of the present application.

[0023] Figure 5 This is a schematic diagram of the first sleeve moving toward the base in Example 2 of the present application.

[0024] Figure 6 For this application Figure 5 Enlarged view of point B. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0026] Example 1:

[0027] See also Figure 1An immersion liquid-cooled energy storage system includes a plurality of liquid cooling boxes 11, wherein batteries 15 are provided in the liquid cooling boxes 11, and a first conductive sheet 111 and a second conductive sheet 112 are provided on one side of the liquid cooling boxes 11. The positive electrode of the battery 15 is electrically connected to the first conductive sheet 111, and the negative electrode of the battery 15 is electrically connected to the second conductive sheet 112. The liquid cooling boxes 11 are connected to a liquid inlet pipe 113 and a liquid outlet pipe 114. The energy storage system also includes a cooling device 12, and the input end and the liquid outlet pipe 114 of the cooling device 12 are connected to each other. 14 is connected, the output end of the cooling device 12 is connected to the liquid inlet pipeline 113, and a circulation loop is formed among the liquid cooling box 11, the liquid outlet pipeline 114, the cooling device 12, and the liquid inlet pipeline 113. Cooling liquid is provided in the circulation loop, and the liquid cooling box 11 is provided with a control mechanism for controlling the flow rate of the cooling liquid in the liquid inlet pipeline 113. A temperature measuring device 14 for measuring the temperature of the cooling liquid in the liquid cooling box 11 is provided in the liquid cooling box 11, and the temperature measuring device 14 and the control mechanism are electrically connected.

[0028] The liquid cooling box 11 is used to accommodate the battery 15, and the battery 15 outputs electrical energy to the outside through the first conductive sheet 111 and the second conductive sheet 112. There is coolant in the liquid cooling box 11, and the battery 15 is immersed in the coolant. The battery 15 is cooled by liquid cooling, and the cooling effect is better. Specifically, the coolant enters the liquid cooling box 11 through the liquid inlet pipe 113 and cools the battery 15, and then the coolant enters the cooling device 12 through the liquid outlet pipe 114. The cooling device includes a condenser and a compressor connected to the condenser. The cooling device reduces the temperature of the coolant through the condenser. The coolant after the temperature is reduced enters the liquid cooling box 11 again through the liquid inlet pipe 113. In this way, the battery 15 can be continuously cooled. In the present application, each battery 15 is installed in an independent liquid cooling box 11, so that the heat conduction between the batteries 15 can be reduced, which can reduce the influence between the batteries 15. In addition, each liquid cooling box 11 is provided with a temperature measuring device 14, which can be configured as a temperature sensor. The temperature within each liquid cooling box 11 can be determined using the temperature measuring device 14, and the flow rate of the liquid inlet line 113 can be controlled based on the temperature of the coolant within the liquid cooling box 11. Specifically, the higher the temperature of the coolant within the liquid cooling box 11, the greater the flow rate of the liquid inlet line 113 caused by the control mechanism, thereby lowering the temperature of the coolant and, in turn, the temperature of the battery 15. Similarly, when the temperature within the liquid cooling box 11 drops to a certain level, the control mechanism reduces the flow rate of the liquid inlet line 113, thereby slowing the heat dissipation rate of the battery 15 and increasing the temperature within the liquid cooling box 11. Through the above configuration, the temperature of each battery 15 can be made substantially uniform and the temperature within each liquid cooling box 11 can be maintained within a certain range, ultimately ensuring that the degradation rate of each battery 15 is substantially consistent and in a more suitable working environment.

[0029] The control mechanism is a solenoid valve 131 .

[0030] The solenoid valve 131 can be obtained from the market, which facilitates the production and maintenance of this application.

[0031] Example 2:

[0032] See also Figures 2 to 6 An immersion liquid-cooled energy storage system includes a plurality of liquid cooling boxes 11, wherein batteries 15 are provided in the liquid cooling boxes 11, and a first conductive sheet 111 and a second conductive sheet 112 are provided on one side of the liquid cooling boxes 11. The positive electrode of the battery 15 is electrically connected to the first conductive sheet 111, and the negative electrode of the battery 15 is electrically connected to the second conductive sheet 112. The liquid cooling boxes 11 are connected to a liquid inlet pipe 113 and a liquid outlet pipe 114. The energy storage system also includes a cooling device 12, and the input end and the liquid outlet pipe 114 of the cooling device 12 are connected to each other. 14 is connected, the output end of the cooling device 12 is connected to the liquid inlet pipeline 113, and a circulation loop is formed among the liquid cooling box 11, the liquid outlet pipeline 114, the cooling device 12, and the liquid inlet pipeline 113. Cooling liquid is provided in the circulation loop, and the liquid cooling box 11 is provided with a control mechanism for controlling the flow rate of the cooling liquid in the liquid inlet pipeline 113. A temperature measuring device 14 for measuring the temperature of the cooling liquid in the liquid cooling box 11 is provided in the liquid cooling box 11, and the temperature measuring device 14 and the control mechanism are electrically connected.

[0033] The energy storage system also includes a support base 115, which is fixedly connected to a pipe 1151 extending vertically. The upper end of the pipe 1151 is fixedly connected to an end plate 1152. A cavity 1153 is formed between the end plate 1152, the pipe 1151 and the support base 115. A partition 11511 is fixedly connected to the pipe 1151. The partition 11511 divides the cavity 1153 into a first channel 11531 and a second channel 11532. The first channel 11531 and the second channel 11532 are connected to each other. Both channels 11532 extend vertically, and the support seat 115 is provided with a third channel 1154 and a fourth channel 1155. The liquid cooling box 11 is fixedly connected to the outside of the pipe 1151, and the liquid cooling boxes 11 are gap-fitted. The liquid inlet pipeline 113 is connected to the output end of the cooling device 12 through the first channel 11531, the third channel 1154, and the liquid outlet pipeline 114 is connected to the input end of the cooling device 12 through the second channel 11532, the fourth channel 1155.

[0034] The support base 115 is used to support the pipe 1151, which extends vertically, making it easy to install the liquid cooling box 11 vertically on the pipe 1151, thereby saving the space occupied by the energy storage system. On the other hand, the pipe 1151 is also used to transmit the coolant. The outside of the liquid cooling box 11 is exposed to the air and can be cooled by air. On the other hand, the liquid cooling boxes 11 are separated from each other, thereby avoiding heat conduction between the liquid cooling boxes 11, and further reducing heat conduction between the batteries 15.

[0035] A first wall channel 11512 communicating with the first channel 11531 is provided on the wall of the pipe 1151, and a second wall channel 11513 communicating with the second channel 11532 is provided on the wall of the pipe 1151. The liquid inlet pipeline 113 is connected to the first channel 11531 through the first wall channel 11512, and the liquid outlet pipeline 114 is connected to the second channel 11532 through the second wall channel 11513.

[0036] The first wall channel 11512 is used to connect the first channel 11531 and the liquid inlet pipeline 113 , and the second wall channel 11513 is used to connect the second channel 11532 and the liquid outlet pipeline 114 .

[0037] The liquid cooling box 11 includes a base 116 fixedly connected to the outside of the pipe 1151, and a first sleeve 1161 with an opening facing away from the pipe 1151 is slidably connected to the side of the base 116 away from the pipe 1151. The side of the first sleeve 1161 away from the pipe 1151 is provided with a second sleeve 1162 with an opening facing the pipe 1151. The first sleeve 1161 and the second sleeve 1162 are slidably connected to form a receiving cavity 117 for accommodating the battery 15. The first conductive sheet 111 and the second conductive sheet 112 are arranged at the bottom of the second sleeve 1162. The control mechanism includes a first guide tube 132 and a second guide tube 133 fixedly connected to the side of the base 116 away from the pipe 1151. The interior of the first guide tube 132 forms a liquid inlet pipe. The first guide tube 132 is fixedly connected to the first control sleeve 11611 and the second control sleeve 11612 at the bottom of the first sleeve 1161. The first guide tube 132 passes through the first control sleeve 11611 and is slidably connected to the first control sleeve 11611. The second guide tube 133 passes through the second control sleeve 11612 and is slidably connected to the second control sleeve 11612. The end of the first guide tube 132 away from the pipeline 1151 is fixedly connected to the first closing plate 1322. The end of the second guide tube 133 away from the pipeline 1151 is fixedly connected to the second closing plate 1332. A plurality of liquid inlets 1321 are sequentially provided on the wall of the first guide tube 132 along the extension direction of the first guide tube 132. A plurality of liquid outlets 1331 are sequentially provided on the wall of the second guide tube 133 along the extension direction of the second guide tube 133. The accommodating chamber 117 is connected to the liquid inlet pipeline 113 through at least one liquid inlet 1321, and is connected to the liquid outlet pipeline 114 through at least one liquid outlet 1331. The base 116 and the second sleeve 1162 are fixedly connected by a connecting rod 1163. The base 116 is provided with a driving device 16 for driving the first sleeve 1161 to slide relative to the second sleeve 1162. When the first sleeve 1161 slides relative to the second sleeve 1162, the first guide tube 132 slides relative to the first control sleeve 11611, and the second guide tube 133 slides relative to the second control sleeve 11612. The upper surface of the first channel 11531 is fixedly connected to the second sleeve 1162 by a connecting rod 1163. The first piston 11533 is slidably connected to the end thereof, and the second piston 11534 is slidably connected to the upper end of the second channel 11532. The first piston 11533 divides the first channel 11531 into a first air-containing chamber 11535 located above the first piston 11533 and a first liquid-containing chamber 11536 located below the first piston 11533. The liquid inlet line 113 is connected to the first liquid-containing chamber 11536. The second piston 11534 divides the second channel 11532 into a second air-containing chamber 11537 located above the second piston 11534 and a second liquid-containing chamber 11538 located below the second piston 11534. The liquid outlet line 114 is connected to the second liquid-containing chamber 11538. The energy storage system further includes an air pump 11539.The first air chamber 11535 and the second air chamber 11537 are both connected to the air pump 11539.

[0038] The base 116 is used to support the first sleeve 1161. The first sleeve 1161 and the second sleeve 1162 can be relatively retracted to achieve a change in the volume of the accommodating chamber 117. Specifically, when the volume of the accommodating chamber 117 increases, the volume of the coolant in the accommodating chamber 117 increases, which can accelerate the heat dissipation of the battery 15. On the other hand, the surface area of the accommodating chamber 117 increases, which can accelerate the heat dissipation of the liquid cooling box 11 in the air, thereby reducing the temperature inside the liquid cooling box 11. Correspondingly, when the volume of the accommodating chamber 117 decreases, the heat dissipation speed of the liquid cooling box 11 in the air slows down, and the heat dissipation of the battery 15 will also slow down. A support plate is fixedly connected to the second sleeve 1162, and the battery 15 is mounted on the support plate. The support plate can prevent interference between the battery 15 and the first sleeve 1161 during the movement of the first sleeve 1161. The first closing plate 1322 is used to close the end of the first guide tube 132 away from the pipe 1151, so that the coolant can only enter the accommodating chamber 117 from the liquid inlet 1321. The second closing plate 1332 is used to close the end of the second guide tube 133 away from the pipe 1151, so that the coolant can only enter the second guide tube 133 from the liquid outlet 1331. The first liquid accommodating chamber 11536 and the second liquid accommodating chamber 11538 are filled with coolant, and the first air accommodating chamber 11535 and the second air accommodating chamber 11537 are filled with air. The air pump 11539 is used to pressurize the first air accommodating chamber 11535 and the second air accommodating chamber 11537. Under the action of air pressure, the first piston 11533 squeezes the coolant in the first liquid accommodating chamber 11536 downward, and the second piston 11534 squeezes the coolant in the second liquid accommodating chamber 11538 downward, so that the coolant pressure in the circulation loop remains unchanged. When the battery 15 is operating normally, see Figure 2 and Figure 3 At this time, the coolant is output from the output end of the cooling device 12, passes through the third channel 1154, the first liquid accommodating chamber 11536, the first wall channel 11512, the liquid inlet pipe 113, the liquid inlet port 1321, and enters the accommodating chamber 117. Then, the coolant passes through the liquid outlet 1331, the liquid outlet pipe 114, the second wall channel 11513, the second liquid accommodating chamber 11538, and the fourth channel 1155 and returns to the cooling device 12. When the temperature in the accommodating chamber 117 rises to a certain level, the driving device 16 drives the first sleeve 1161 to move toward the base 116. Figure 5 and Figure 6At this time, the volume of accommodating chamber 117 increases. Simultaneously, first sleeve 1161 drives first control sleeve 11611 toward base 116, exposing more liquid inlets 1321 within accommodating chamber 117. Second sleeve 1162 drives second control sleeve 11612 toward base 116, exposing more liquid outlets 1331 within accommodating chamber 117. This increases the flow rates of inlet and outlet pipes 113 and 114, accelerating the renewal rate of coolant within accommodating chamber 117 and thereby reducing the temperature of accommodating chamber 117 and accelerating heat dissipation from battery 15. Correspondingly, when the temperature within accommodating chamber 117 drops to a certain level, drive device 16 drives first sleeve 1161 toward second sleeve 1162, reducing the volume of accommodating chamber 117 and the flow rates of inlet and outlet pipes 113 and 114, slowing heat dissipation from battery 15 and increasing the temperature of accommodating chamber 117. During this process, when the volume of the accommodating chamber 117 increases, the volumes of the first liquid accommodating chamber 11536 and the second liquid accommodating chamber 11538 will decrease, that is, the first piston 11533 and the second piston 11534 will move downward, and the volumes of the first air accommodating chamber 11535 and the second air accommodating chamber 11537 will increase; correspondingly, when the volume of the accommodating chamber 117 decreases, the volumes of the first air accommodating chamber 11535 and the second air accommodating chamber 11537 will decrease. Through the above-mentioned arrangement, the flow rate of the liquid inlet pipe 113 and the liquid outlet pipe 114 can be changed by the driving device 16, and the volume of the accommodating chamber 117 can also be changed, thereby accelerating and slowing down the heat dissipation of the battery 15 in multiple ways, thereby making the temperature adjustment in the accommodating chamber 117 faster, thereby improving the efficiency of temperature regulation of the energy storage system.

[0039] An air hole 11514 for connecting the first air accommodating cavity 11535 and the second air accommodating cavity 11537 is provided at the upper end of the partition 11511 , and the air pump 11539 is connected to the second air accommodating cavity 11537 .

[0040] The air pump 11539 can directly deliver air to the second air chamber 11537 to increase the air pressure therein, or it can deliver air to the first air chamber 11535 through the air hole 11514 to increase the air pressure therein. The provision of the air hole 11514 ensures that the air pressures in the first air chamber 11535 and the second air chamber 11537 are substantially the same.

[0041] The driving device 16 is an electric cylinder 161 , one end of which is connected to the base 116 , and the other end of the electric cylinder 161 is connected to the first sleeve 1161 .

[0042] The electric cylinder 161 can be easily purchased on the market, thereby facilitating the production and maintenance of the present application.

[0043] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An immersion liquid-cooled energy storage system, characterized in that: The energy storage system further comprises a cooling device, wherein the cooling device has an input end connected to the liquid outlet pipe, the output end of the cooling device is connected to the liquid inlet pipe, the cooling device, the cooling device and the liquid inlet pipe form a circulation loop, the cooling device, the liquid outlet pipe, the cooling device and the liquid inlet pipe form a circulation loop, the cooling liquid is provided in the circulation loop, the cooling liquid is provided with a control mechanism for controlling the flow rate of the cooling liquid in the liquid inlet pipe, the cooling device is provided with a temperature measuring device for measuring the temperature of the cooling liquid in the cooling box, and the temperature measuring device is electrically connected to the control mechanism; The energy storage system further includes a support base, the support base is fixedly connected to a pipe extending vertically, the upper end of the pipe is fixedly connected to an end plate, a cavity is formed between the end plate, the pipe and the support base, a partition is fixedly connected in the pipe, the partition divides the cavity into a first channel and a second channel, the first channel and the second channel both extend vertically, the support base is provided with a third channel and a fourth channel, the liquid cooling box is fixedly connected to the outside of the pipe, and the liquid cooling boxes are clearance-fitted, the liquid inlet pipeline is connected to the output end of the cooling device through the first channel, the third channel, and the liquid outlet pipeline is connected to the input end of the cooling device through the second channel, the fourth channel; The liquid cooling box includes a base fixedly connected to the outer side of the pipeline, a first sleeve with an opening facing away from the pipeline is slidably connected to the side of the base away from the pipeline, a second sleeve with an opening facing the pipeline is sleeved on the side of the first sleeve away from the pipeline, the first sleeve and the second sleeve are slidably connected to form a accommodating cavity for accommodating the battery, the first conductive sheet and the second conductive sheet are arranged at the bottom of the second sleeve, the control mechanism includes a first guide tube and a second guide tube fixedly connected to the side of the base away from the pipeline, the interior of the first guide tube forms the liquid inlet pipeline, the interior of the second guide tube forms the liquid outlet pipeline, the bottom of the first sleeve is fixedly connected to a first control sleeve and a second control sleeve, the first guide tube passes through the first control sleeve and is slidably connected to the first control sleeve, the second guide tube passes through the second control sleeve and is slidably connected to the second control sleeve, the end of the first guide tube away from the pipeline is fixedly connected to a first closing plate, the end of the second guide tube away from the pipeline is fixedly connected to a second closing plate, a plurality of liquid inlets are sequentially provided on the wall of the first guide tube along the extension direction of the first guide tube, A plurality of liquid outlets are sequentially provided on the wall of the second guide tube along the extension direction of the second guide tube. The accommodating chamber is connected to the liquid inlet pipeline through at least one liquid inlet, and the accommodating chamber is connected to the liquid outlet pipeline through at least one liquid outlet. The base and the second sleeve are fixedly connected by a connecting rod. The base is provided with a driving device for driving the first sleeve to slide relative to the second sleeve. When the first sleeve slides relative to the second sleeve, the first guide tube slides relative to the first control sleeve, and the second guide tube slides relative to the second control sleeve. A first piston is slidably connected to the upper end of the first channel, and a second piston is slidably connected to the upper end of the second channel. The first piston divides the first channel into a first air-containing chamber located above the first piston and a first liquid-containing chamber located below the first piston. The liquid inlet pipeline is connected to the first liquid-containing chamber, and the second piston divides the second channel into a second air-containing chamber located above the second piston and a second liquid-containing chamber located below the second piston. The liquid outlet pipeline is connected to the second liquid-containing chamber. The energy storage system also includes an air pump, and both the first air-containing chamber and the second air-containing chamber are connected to the air pump.

2. The immersion liquid-cooled energy storage system according to claim 1, characterized in that: The control mechanism is a solenoid valve.

3. The immersion liquid-cooled energy storage system according to claim 1, characterized in that: A first wall channel communicating with the first channel is provided on the wall of the pipeline, and a second wall channel communicating with the second channel is provided on the wall of the pipeline. The liquid inlet pipeline is connected to the first channel through the first wall channel, and the liquid outlet pipeline is connected to the second channel through the second wall channel.

4. The immersion liquid-cooled energy storage system according to claim 1, characterized in that: An air hole for connecting the first air accommodating cavity and the second air accommodating cavity is provided at the upper end of the partition, and the air pump is connected to the second air accommodating cavity.

5. The immersion liquid-cooled energy storage system according to claim 1, characterized in that: The driving device is an electric cylinder with one end connected to the base, and the other end of the electric cylinder is connected to the first sleeve.

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