CN219393503U - Air cooling system and container battery system - Google Patents
Air cooling system and container battery system Download PDFInfo
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- CN219393503U CN219393503U CN202320315261.7U CN202320315261U CN219393503U CN 219393503 U CN219393503 U CN 219393503U CN 202320315261 U CN202320315261 U CN 202320315261U CN 219393503 U CN219393503 U CN 219393503U
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- air
- battery
- air outlet
- cooling system
- container
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses an air cooling system and a container battery system, wherein a battery rack is arranged in a container, the air cooling system comprises a refrigerating unit, an air outlet main pipe and at least one branch pipe, at least one branch pipe is arranged above the battery rack along a first direction, each branch pipe is communicated with an air outlet of the refrigerating unit through the air outlet main pipe, and an air outlet is arranged above the battery rack and used for placing batteries. The air cooling system is connected with an air outlet main pipe at the air outlet of the refrigeration unit, and is connected with at least one branch pipeline on the air outlet main pipe, and the air outlet on the branch pipeline is arranged above the battery rack for placing the battery, so that the cold air generated by the refrigeration unit can be accurately sent to the vicinity of the battery through the air outlet main pipe and the branch pipeline, the problem that the temperature difference of the cold air on a flow path is large in the prior art is solved, the cold air flow distribution is balanced, and the refrigeration effect of the battery is improved.
Description
Technical Field
The utility model relates to the technical field of refrigeration systems, in particular to an air cooling system and a container battery system.
Background
There is an urgent need for energy storage containers with high energy density and high battery balance.
One common energy storage container is provided with a plurality of battery racks internally, a plurality of batteries are stored on the battery racks, and a refrigeration system is installed on the container. Conventional energy storage container refrigeration systems utilize unidirectional airflow that enters only from the inlet of the container and eventually exits from the outlet. Due to the influence of convection heat exchange between the cold air flow and the battery on the battery rack, the temperature of the air flow gradually rises along the air flow direction, and the effect of convection heat exchange between the air flow and the battery gradually weakens. In particular, the downstream cell temperature near the outlet differs significantly from the cell temperature near the gas flow inlet. And the number of the battery cells in the high-energy-density battery is more, and the temperature gradient effect of the battery in the air flow direction is more obvious, so that the battery has poorer consistency, and the high-rate operation of the battery can not be supported. In addition, as the space distribution of the battery system of the container is long and narrow, the internal environment of the container where different battery frames are positioned has large difference, so that the heat management design difficulty is high. Therefore, how to ensure the uniformity of the flow rate of the cold air distribution of the battery on each battery rack during the operation of the battery system, and solve the problem of large temperature difference between the battery racks, is an important point of research and development designers.
Disclosure of Invention
The utility model aims to overcome the defect of nonuniform cold air distribution of an energy storage container in the prior art, and provides an air cooling system and a container battery system.
The utility model solves the technical problems by the following technical scheme:
the utility model provides an air cooling system, its is used for the container, be provided with the battery frame in the container, air cooling system includes refrigeration unit, air-out are responsible for and at least one lateral conduit, at least one lateral conduit along first direction arrange in the top of battery frame, every lateral conduit is all through the air-out is responsible for with refrigeration unit's air exit intercommunication, every lateral conduit with the battery frame is used for placing the top of battery position and is provided with the air outlet.
In this scheme, this forced air cooling system is connected with the air-out and is responsible for to be connected with at least one lateral conduit on the air-out is responsible for, and the air outlet on the lateral conduit sets up the top that is used for placing the battery position at the battery frame, makes the air conditioning that refrigeration unit produced can be close to the battery by accurate sending to through air-out being responsible for, lateral conduit, has solved the big problem of air conditioning difference in temperature on the flow path among the prior art, makes the cold air flow distribution balanced, improves the refrigeration effect of battery.
Preferably, the projection of the air outlet along the vertical direction is located above the battery position.
In this scheme, adopt above-mentioned structure setting, the passageway of being convenient for utilize between the adjacent battery, the air conditioning flows in this passageway and can cool off the battery of passageway both sides, improves the cooling effect.
Preferably, the air outlets between adjacent battery positions comprise a first air outlet and a second air outlet, and the first air outlet and the second air outlet are respectively positioned at two sides of the vertical partition of the battery frame.
In this scheme, adopt above-mentioned structure setting, set up more air outlets in the intensive place of battery arrangement, improve the regional refrigeration effect in battery holder middle part, first air outlet and second air outlet are located the both sides of the perpendicular shelves of battery holder respectively, prevent to erect and separate shelves and hinder to exhaust, improve the effect of airing exhaust.
Preferably, the air cooling system further comprises an air inlet pipe, one end of the air inlet pipe is connected and communicated with the air inlet of the refrigerating unit, the other end of the air inlet pipe extends to be far away from the lower side of the battery rack at the far-end of the refrigerating unit, and an air return port is arranged on the air inlet pipe.
In this scheme, adopt above-mentioned structure setting, because the air outlet sets up in the top of battery rack, the air intake of refrigeration unit extends to the below of battery rack through the air-supply line, from the air-out exhaust air flow through the battery down from last after, flow into refrigeration unit through the return air inlet, and the reciprocal circulation forms a complete air current return circuit, and wherein, the battery is located the route of this air current return circuit, improves refrigeration effect.
Preferably, the air cooling system further comprises a driving mechanism and a louver, wherein the louver is installed at the air outlet, and the driving mechanism drives the louver to rotate so as to change the opening of the air outlet.
In this scheme, adopt above-mentioned structure setting, through the aperture that changes the air outlet, and then change the size of sending the air quantity. The opening degree of the air outlet can be related to the temperature of the corresponding position, the opening degree of the air outlet corresponding to the position with high temperature is large, the opening degree of the air outlet corresponding to the position with low temperature is small, and therefore accurate distribution of cold air is achieved, and the refrigerating effect is improved.
Preferably, the driving mechanism is a stepping motor, and an output shaft of the stepping motor is connected to the louver.
In this scheme, the rotation angle of the tripe of being convenient for utilize step motor accurate control, realize the automatic start and stop of tripe.
Preferably, the air cooling system further comprises a control unit, wherein the control unit is electrically connected with the stepper motor and used for controlling rotation of the stepper motor.
In the scheme, the control unit controls the stepping motor according to the preset instruction, and the stepping motor drives the rotating angle of the louver blade according to the instruction sent by the control unit, so that an automatic control system is formed, human intervention is reduced, and user experience is improved.
Preferably, the air cooling system further comprises a temperature acquisition unit, wherein the temperature acquisition unit is used for acquiring the temperature of a battery core of the battery, the temperature acquisition unit is electrically connected with the control unit, the control unit is electrically connected with the refrigeration unit, and the control unit is used for controlling the refrigeration unit to switch between an air supply mode and a refrigeration mode.
In the scheme, the temperature acquisition unit sends the temperature data of the acquired electric core to the control unit, the control unit compares the received temperature data with preset data, if the temperature of the electric core is higher than the preset temperature value, the control unit switches the refrigerating unit into a refrigerating mode, and if the temperature of the electric core is lower than the preset temperature value, the control unit switches the refrigerating unit into an air supply mode, so that electric power is saved, and economic benefit is improved. Further, the control unit can correspondingly adjust the power of the refrigerating unit according to the temperature of the battery cell, so that the electric power is saved, and the economic benefit is improved.
Preferably, the air cooling system is installed inside the container.
In the scheme, the structure is adopted, so that the air cooling system is conveniently integrated into the container, a standardized and integrated battery storage system is formed, and the structure setting is simplified.
A container battery system comprising an air-cooled system as described above.
In the scheme, the temperature of the battery stored in the container is detected and controlled in real time by adopting the structural form, so that the safety of battery storage is improved.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the utility model.
The utility model has the positive progress effects that: the air cooling system is connected with an air outlet main pipe at the air outlet of the refrigeration unit, and is connected with at least one branch pipeline on the air outlet main pipe, and the air outlet on the branch pipeline is arranged above the battery rack for placing the battery, so that the cold air generated by the refrigeration unit can be accurately sent to the vicinity of the battery through the air outlet main pipe and the branch pipeline, the problem that the temperature difference of the cold air on a flow path is large in the prior art is solved, the cold air flow distribution is balanced, and the refrigeration effect of the battery is improved.
Drawings
Fig. 1 is a schematic view showing an internal structure of a container battery system according to a preferred embodiment of the present utility model.
Fig. 2 is a schematic structural diagram (a) of an air cooling system according to a preferred embodiment of the utility model.
Fig. 3 is a schematic structural diagram of an air cooling system according to a preferred embodiment of the utility model.
Fig. 4 is an enlarged view of a portion a in fig. 3.
Fig. 5 is an enlarged view of a portion B in fig. 3.
Fig. 6 is a control schematic diagram of an air cooling system according to a preferred embodiment of the present utility model.
FIG. 7 is a schematic view of the rotation angle of a louver according to a preferred embodiment of the present utility model.
Reference numerals illustrate:
battery rack 1
Vertical partition 11
Refrigerating unit 2
Air outlet main pipe 3
Branch pipe 4
Air outlet 5
First air outlet 51
Second air outlet 52
Air inlet pipe 6
Air return port 61
Shutter 7
Step motor 8
Control unit 9
Container 10
Primary battery management system 110
Secondary battery management system 120
Three-stage battery management system 130
Battery 101
Battery location 102
First direction 103
Controller area network bus CAN
Thermistor NTC
Detailed Description
The utility model will now be more fully described by way of example only and with reference to the accompanying drawings, but the utility model is not thereby limited to the scope of the examples described.
As shown in fig. 1 to 7, the present embodiment discloses an air cooling system, which is applied to a container 10, a battery rack 1 is disposed in the container 10, the battery rack 1 is used for storing batteries, and the air cooling system cools the batteries. The air cooling system comprises a refrigerating unit 2, an air outlet main pipe 3 and a plurality of branch pipes 4, wherein the plurality of branch pipes 4 are arranged above the battery rack 1 along a first direction 103, each branch pipe 4 is communicated with an air outlet of the refrigerating unit 2 through the air outlet main pipe 3, and an air outlet 5 is arranged above the battery rack 1 and used for placing batteries. As shown in fig. 1 and 2, the air cooling system is connected with an air outlet main pipe 3 at an air outlet 5 of a refrigeration unit 2, and is connected with at least one branch pipe 4 on the air outlet main pipe 3, and the air outlet 5 on the branch pipe 4 is arranged above the battery rack 1 for placing the battery, so that the cold air generated by the refrigeration unit 2 can be accurately sent to the vicinity of the battery through the air outlet main pipe 3 and the branch pipe 4, the problem of large temperature difference of the cold air on a flow path in the prior art is solved, the cold air flow distribution is balanced, and the refrigeration effect of the battery is improved. In this embodiment, the first direction is the width direction of the container. Of course, in other embodiments, the first direction may be the length direction of the container or any other direction.
As shown in fig. 1, in the present embodiment, the branch pipe 4 is integrally provided above the battery holder 1. In other alternative embodiments, the branch pipe may also be extended into the battery rack, so that the air outlet on the branch pipe is arranged in one-to-one correspondence with the battery on the battery rack, and a more refined refrigerating effect is improved. Preferably, the projection of the air outlet 5 along the vertical direction is located above the battery position 102, so that the channel formed between adjacent batteries is conveniently utilized, and the cold air flows into the channel to cool the batteries at two sides of the channel, thereby improving the cooling effect.
As shown in fig. 1 to 5, the air outlet 5 between adjacent battery positions 102 includes a first air outlet 51 and a second air outlet 52, and the first air outlet 51 and the second air outlet 52 are respectively located at two sides of the vertical partition 11 of the battery rack 1. More air outlets 5 are arranged at the places where the batteries are densely arranged, the refrigerating effect of the middle area of the battery rack 1 is improved, the first air outlets 51 and the second air outlets 52 are respectively positioned at two sides of the vertical partition 11 of the battery rack 1, the vertical partition 11 is prevented from obstructing air exhaust, and the air exhaust effect is improved.
As shown in fig. 2, on this basis, the air cooling system further includes an air inlet pipe 6, one end of the air inlet pipe 6 is connected to and communicated with the air inlet of the refrigeration unit 2, the other end of the air inlet pipe 6 extends to a position below the battery rack 1 at the most far end of the refrigeration unit 2, and an air return port 61 is provided on the air inlet pipe 6. Since the air outlet 5 is arranged above the battery frame 1, the air inlet of the refrigeration unit 2 extends to the lower part of the battery frame 1 through the air inlet pipe 6, and the cool air discharged from the air outlet 5 flows into the refrigeration unit 2 through the air return port 61 after flowing through the battery from top to bottom, and the battery is positioned on the path of the air flow loop to improve the refrigeration effect.
As shown in fig. 4, the air cooling system further includes a driving mechanism and a louver 7, wherein the louver 7 is installed at the air outlet 5, and the driving mechanism drives the louver 7 to rotate so as to change the opening of the air outlet 5. By changing the opening degree of the air outlet 5, the air quantity is changed. The opening degree of the air outlet 5 can be related to the temperature of the corresponding position, the opening degree of the air outlet 5 corresponding to the position with high temperature is large, the opening degree of the air outlet 5 corresponding to the position with low temperature is small, and therefore the accurate distribution of cold air is realized, and the refrigerating effect is improved.
As shown in fig. 4 and 6, in this embodiment, the driving mechanism is a stepper motor 8, and an output shaft of the stepper motor 8 is connected to the louver 7, so that the rotation angle of the louver 7 is accurately controlled by using the stepper motor 8, and automatic opening and closing of the louver 7 are realized.
As shown in fig. 1 and 6, in the present embodiment, the air cooling system further includes a control unit 9, and the control unit 9 is electrically connected to the stepper motor 8 and is used for controlling the rotation of the stepper motor 8. The control unit 9 controls the stepping motor 8 according to a preset instruction, the stepping motor 8 drives the rotation angle of the louver 7 according to the instruction sent by the control unit 9, an automatic control system is formed, human intervention is reduced, and user experience is improved.
As shown in fig. 6, the air cooling system further includes a temperature acquisition unit, the temperature acquisition unit is used for acquiring the battery core temperature of the battery, the temperature acquisition unit is electrically connected with a control unit 9, the control unit 9 is electrically connected with the refrigeration unit 2, and the control unit 9 is used for controlling the refrigeration unit 2 to switch between an air supply mode and a refrigeration mode. The temperature acquisition unit sends the temperature data of the acquired current core to the control unit 9, the control unit 9 compares the received temperature data with preset data, if the temperature of the current core is higher than the preset temperature value, the control unit 9 switches the refrigerating unit 2 into a refrigerating mode, and if the temperature of the current core is lower than the preset temperature value, the control unit 9 switches the refrigerating unit 2 into an air supply mode, so that electric power is saved, and economic benefit is improved. Further, the control unit 9 can correspondingly adjust the power of the refrigeration unit 2 according to the temperature of the battery cell, so as to improve the refrigeration effect. In this embodiment, the temperature acquisition unit acquires the cell temperature of the battery through a thermistor (NTC).
As shown in fig. 1, in the present embodiment, the air cooling system is installed inside the container 10, so that the air cooling system is integrated into the container 10, thereby facilitating the formation of a standardized and integrated battery storage system and simplifying the structural arrangement.
As shown in fig. 1, this embodiment also discloses a container battery system, which includes the air cooling system as described above. The air cooling system can detect and control the temperature of the battery stored in the container 10 in real time, and the safety of battery storage is improved.
The embodiment also discloses a control method of the air cooling system. In the present embodiment, the refrigeration unit 2 is an air conditioning system.
The opening of the air conditioner refrigerating or air supplying and the shutter 7 is determined by the battery temperature and the temperature difference between batteries. When the highest temperature of a certain battery reaches a target threshold value, the stepping motor 8 controls the louver blades 7 to rotate to a certain angle, and cold air enters the battery frame 1 through the air outlet 5 on the branch pipeline 4 to cool the battery. As shown in fig. 7, the opening degree of the louver 7 is divided into four levels of 0 °, 30 °, 60 °, and 90 °. The highest temperature target thresholds of the battery corresponding to 30 degrees, 60 degrees and 90 degrees of the opening of the louver 7 are respectively T 1 、T 2 And T 3 Wherein T is 1 ＜T 2 ＜T 3 . The rotation speed of the air conditioner fan is controlled by the control unit 9, and the control unit 9 adjusts according to the temperature change of the battery. The opening degree of any louver 7 becomes larger, the duty ratio becomes larger, the rotating speed of the fan is correspondingly increased, the opening degree of any louver 7 becomes smaller, the duty ratio becomes smaller, and the rotating speed of the fan is correspondingly reduced. The change of the duty ratio is related to the change angle of the opening degree of the single louver 7 and the change quantity of the opening degree of the louver 7.
When the container battery system is running, when the highest temperature of a certain battery frame 1 reaches T 1 At C, a high temperature control mode is triggered. The air conditioning system starts to refrigerate, and the air conditioning compressor outputs air according to the target temperature T preset by the control unit 9 0 Variable frequency control at a temperature higher than (T) 0 At +2) DEG C, the compressor is operated at rated power, when the temperature drops to (T 0 When +2) DEG C, the compressor starts to reduce the frequency, and the temperature of the outlet air is maintained at the target temperature (T 0 2) DEG C. When the opening degree of the air outlet 5 above any battery rack 1 becomes large, the power of the air conditioner fan is correspondingly increased. When all the louver blades 7 of the air outlets 5 reach the maximum opening degree of 90 degrees, the power of the air conditioner fan reaches the maximum, and the temperature difference control mode is triggered. In the temperature difference control mode, the maximum power of the fan is kept unchanged, and the compressor is controlled in a variable frequency mode according to the target air outlet temperature. If the maximum temperature difference of the highest temperature between the cells exceeds the threshold value deltat max1 When the highest cell temperature in a certain battery is different from the highest temperature of the battery system by more than delta T max1 Threshold value, thenThe opening degree of the air outlet 5 on the corresponding branch pipeline 4 is correspondingly reduced by one step; the highest cell temperature in a cell differs from the highest temperature of the battery system by more than delta T max2 The opening of the air outlet 5 on the corresponding branch pipeline 4 is correspondingly reduced by two stages; the highest cell temperature in a cell differs from the highest temperature of the battery system by more than delta T max3 And the opening degree of the air outlet 5 on the corresponding branch pipeline 4 is reduced by three steps (namely, closed) by the threshold value. Wherein DeltaT max1 ＜ΔT max2 ＜ΔT max3 . In this way, the air volume distribution between the battery racks 1 can be adjusted, and the air volume is supplied to the battery rack 1 having a higher temperature more. When the maximum temperature difference of the highest temperature between the battery frames 1 is lower than deltat max1 When the threshold value is 2 ℃, the air cooling system exits the temperature difference control mode and is switched to the high temperature control mode, and the air conditioning fan and the compressor operate according to the high temperature control mode.
As shown in fig. 6, a specific electrical control principle is as follows: the primary battery management system 110 (BMS) collects the cell temperature information through a thermistor (NTC) and transmits the temperature information to the secondary battery management system 120 (BMS) through controller area network bus (CAN) communication. The secondary battery management system 120 (BMS) receives and analyzes temperature information of the plurality of primary battery management systems 110 (BMS), outputs a pulse signal to the control unit 9 according to a corresponding control strategy to control the opening degree of the louver 7, and simultaneously transmits the temperature information and the converted opening degree information of the louver 7 to the tertiary battery management system 130 (BMS). The three-stage battery management system 130 (BMS) receives and receives temperature and louver 7 opening information of the plurality of two-stage battery management systems 120 (BMS), determines whether the battery system is in a high temperature control mode and a temperature difference control mode according to a pre-fabricated policy mode, and simultaneously transmits a mode type signal and louver 7 opening information of each battery cluster to the air conditioner. The air conditioner receiving mode type signal switches the corresponding control mode. In the air conditioner high temperature control mode state, the rotating speed of the air conditioner fan is controlled through the duty ratio of the output signal according to the received opening information of the louver 7. The control unit 9 receives a pulse signal of the secondary battery management system 120 (BMS) to control the stepping motor 8 to rotate a corresponding angle, thereby controlling the louver 7 to rotate a corresponding angle. The louver blades 7 of the air outlets 5 at the two sides of the top of the single cell cluster are adjusted in a linkage way so as to simplify the structural arrangement.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.
Claims (10)
1. The utility model provides an air cooling system, its is used for the container, be provided with the battery rack in the container, a serial communication port, air cooling system includes refrigeration unit, air-out are responsible for and at least one lateral conduit, at least one lateral conduit along first direction arrange in the top of battery rack, every lateral conduit all passes through the air-out is responsible for with refrigeration unit's air exit intercommunication, every lateral conduit with the battery rack is used for placing the top in battery position and is provided with the air outlet.
2. The air cooling system of claim 1, wherein a projection of the air outlet in a vertical direction is located above the battery location.
3. The air cooling system of claim 1, wherein the air outlets between adjacent cell locations comprise a first air outlet and a second air outlet, the first air outlet and the second air outlet being located on opposite sides of a vertical barrier of the cell shelf, respectively.
4. The air cooling system of claim 1, further comprising an air inlet pipe, wherein one end of the air inlet pipe is connected to and communicated with the air inlet of the refrigeration unit, the other end of the air inlet pipe extends to a position below a battery rack at a far end of the refrigeration unit, and an air return port is arranged on the air inlet pipe.
5. The air cooling system of claim 1, further comprising a drive mechanism and a louver, the louver being mounted to the air outlet, the drive mechanism driving the louver to rotate to vary the opening of the air outlet.
6. The air cooling system according to claim 5, wherein the driving mechanism is a stepper motor, and an output shaft of the stepper motor is connected to the louver.
7. The air cooling system of claim 6, further comprising a control unit electrically connected to the stepper motor for controlling rotation of the stepper motor.
8. The air cooling system according to claim 7, further comprising a temperature acquisition unit for acquiring a cell temperature of the battery, wherein the temperature acquisition unit is electrically connected to the control unit, wherein the control unit is electrically connected to the cooling unit, and wherein the control unit is configured to control the cooling unit to switch between an air supply mode and a cooling mode.
9. The air-cooled system of any one of claims 1-8, wherein the air-cooled system is mounted inside the container.
10. A container battery system, characterized in that the container battery system comprises an air cooling system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320315261.7U CN219393503U (en) | 2023-02-23 | 2023-02-23 | Air cooling system and container battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320315261.7U CN219393503U (en) | 2023-02-23 | 2023-02-23 | Air cooling system and container battery system |
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| Publication Number | Publication Date |
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| CN219393503U true CN219393503U (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320315261.7U Active CN219393503U (en) | 2023-02-23 | 2023-02-23 | Air cooling system and container battery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117239299A (en) * | 2023-11-16 | 2023-12-15 | 新乡市镇华电力科技有限公司 | Energy storage power station temperature control device |
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2023
- 2023-02-23 CN CN202320315261.7U patent/CN219393503U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117239299A (en) * | 2023-11-16 | 2023-12-15 | 新乡市镇华电力科技有限公司 | Energy storage power station temperature control device |
| CN117239299B (en) * | 2023-11-16 | 2024-02-09 | 新乡市镇华电力科技有限公司 | Energy storage power station temperature control device |
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