Energy storage heat management system and energy storage equipment

Abstract

The embodiment of the invention provides an energy storage heat management system and energy storage equipment, and relates to the technical field of battery energy storage, and the energy storage heat management system comprises a battery cabinet, an electrical cabinet, a liquid cooling unit, an air cooling unit and a control unit. The battery cabinet is provided with at least one first cabin, and the first cabin is used for installing at least one high-voltage box and at least one battery. The electrical cabinet is provided with at least one second cabin, the liquid cooling unit is used for abutting against at least part of the surface of the battery, and the air cooling unit is sequentially communicated with the first cabin and the second cabin to form a first air cooling loop. And when the temperature of the battery is greater than or equal to a first preset temperature, the control unit controls the liquid cooling unit to refrigerate the battery and air passing through the liquid cooling unit, and when the temperature of the high-voltage box is greater than or equal to a second preset temperature, the control unit controls the air cooling unit to sequentially cool the high-voltage box and the second cabin. According to the energy storage heat management system provided by the embodiment of the invention, the energy efficiency utilization rate can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery energy storage technology, and in particular to an energy storage thermal management system and energy storage equipment. Background Art

[0002] With the continuous development of energy storage technology, battery energy storage equipment, as an important energy storage equipment, such as battery container energy storage equipment, is increasingly widely used. Among them, the application scenarios in some high-temperature areas have put forward higher requirements for the stable operation of energy storage equipment.

[0003] In the battery energy storage device in the related art, a liquid cooling system is generally used to dissipate heat from the batteries in the energy storage device, while an air cooling system is used to dissipate heat from the electrical components in the energy storage device.

[0004] However, in the thermal management system of the above energy storage equipment, the integration degree of the liquid cooling system and the air cooling system is low, and the energy efficiency utilization rate is low. Summary of the invention

[0005] Based on this, the present application provides an energy storage thermal management system and an energy storage device to solve the problem that the degree of integration of the liquid cooling system and the air cooling system in the thermal management system of the existing battery energy storage device is low, thus affecting the energy efficiency utilization rate.

[0006] In a first aspect, the present application provides an energy storage thermal management system, including a battery cabinet, an electrical cabinet, a liquid cooling unit, an air cooling unit, and a control unit;

[0007] The battery cabinet has at least one first compartment, in which at least one high-voltage box and at least one battery are installed;

[0008] The electrical cabinet is provided with at least one second compartment, the liquid cooling unit is used to abut against at least part of the surface of the battery, and the air cooling unit is sequentially connected with the first compartment and the second compartment to form a first air cooling circuit;

[0009] The control unit is configured to, when the temperature of the battery is greater than or equal to a first preset temperature, control the liquid cooling unit to cool the battery and the wind passing through the liquid cooling unit; when the temperature of the high-pressure box is greater than or equal to a second preset temperature, control the air cooling unit to cool the high-pressure box and the second compartment in turn; wherein the second preset temperature is greater than the first preset temperature.

[0010] In a possible implementation, the electrical cabinet further has at least one third compartment, and the air cooling unit is further connected with the first compartment and the third compartment in sequence to form a second air cooling circuit;

[0011] The control unit is also configured to control the air cooling unit to sequentially air cool the high-pressure box and the third compartment when the temperature of the high-pressure box is greater than or equal to a second preset temperature.

[0012] In a possible implementation, a first wind control member is provided between the first cabin and the second cabin, and a second wind control member is provided between the first cabin and the third cabin;

[0013] The control unit is further configured to control the first air control member to increase the ventilation area and control the second air control member to reduce the ventilation area when the temperature in the second compartment is greater than or equal to the third preset temperature and the temperature in the third compartment is less than the fourth preset temperature;

[0014] The control unit is further configured to control the first air control member to reduce the ventilation area, and control the second air control member to increase the ventilation area, when the temperature in the second compartment is lower than the third preset temperature and the temperature in the third compartment is higher than or equal to the fourth preset temperature;

[0015] The control unit is also configured to control the first air control element and the second air control element to adjust the ventilation area to the maximum when the temperature in the second compartment is lower than the third preset temperature and the temperature in the third compartment is lower than the fourth preset temperature, and when the temperature in the second compartment is greater than or equal to the third preset temperature and the temperature in the third compartment is greater than or equal to the fourth preset temperature.

[0016] In a possible implementation, the maximum ventilation area of ​​the first air control member is greater than the maximum ventilation area of ​​the second air control member.

[0017] In a possible implementation, the air cooling unit is also connected to the second cabin to form a first air supply duct;

[0018] And / or, the air cooling unit is also connected to the third compartment to form a second air supply duct.

[0019] In a possible implementation, the air cooling unit includes an air conditioner and an air guide, and the air conditioner has an air outlet and an air return outlet;

[0020] The air outlet is communicated with the first compartment, the second compartment and the third compartment respectively through the air guide member, and the second compartment and the third compartment are communicated with the return air outlet respectively.

[0021] In a possible implementation, a plurality of first compartments are arranged along a first direction on the battery cabinet, and an air duct is provided in the air guide; one side of the air guide is connected to the air conditioner, and the air duct is communicated with the air outlet, and the other side of the air guide is connected to the battery cabinet and extends into one of the first compartments;

[0022] The air guide member has at least one extension portion on one side located in the first compartment, the extension portion extends in the first direction, the extension portion has a main air port connected to the air duct, and the air guide member also has at least one secondary air port connected to the air duct, the secondary air port is used to face the high-pressure box;

[0023] The air guide member also has a first air supply port and a second air supply port connected to the air duct, the first air supply port is connected to the second cabin, and the second air supply port is connected to the third cabin.

[0024] In a possible implementation, a wind shield is provided in the battery cabinet, and the wind shield is used to shield the high-voltage box and the battery, and a flow gap is left between the wind shield and the inner wall of the first compartment.

[0025] In a possible implementation, the liquid cooling unit includes a liquid cooling unit and at least one cold plate, and the liquid cooling unit is connected to the cold plate pipeline to form a liquid cooling loop;

[0026] The liquid cooling unit is electrically connected to the control unit, and the cold plate is used for contacting with the battery.

[0027] In a second aspect, the present application further provides an energy storage device, including a device body, on which any one of the energy storage thermal management systems provided in the first aspect is disposed.

[0028] The energy storage thermal management system and energy storage device provided by the present application include a battery cabinet, an electrical cabinet, a liquid cooling unit, an air cooling unit and a control unit. At least one first compartment is provided on the battery cabinet, and at least one high-voltage box and at least one battery are installed in the first compartment. At least one second compartment is provided on the electrical cabinet for arranging electrical components. The liquid cooling unit is provided to abut against at least part of the surface of the battery to facilitate cooling of the battery. The air cooling unit is provided to be connected with the first compartment and the second compartment in sequence to form a first air cooling circuit. When the temperature of the battery is greater than or equal to the first preset temperature, the control unit controls the liquid cooling unit to cool the battery and the wind passing through the liquid cooling unit. When the temperature of the high-voltage box is greater than or equal to the second preset temperature, the control unit controls the air cooling unit to cool the high-voltage box and the second compartment in sequence. The second preset temperature is greater than the first preset temperature. By using the liquid cooling unit to cool the passing wind, it is convenient to subsequently cool the electrical components in the second compartment, thereby improving energy efficiency utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A schematic diagram of the top view of the energy storage thermal management system provided in an embodiment of the present application;

[0031] Figure 2 for Figure 1 Schematic diagram of the interior of the battery cabinet;

[0032] Figure 3 for Figure 1 A schematic diagram of the structure of the first wind control member;

[0033] Figure 4 for Figure 1 A schematic diagram of the structure of the second wind control member;

[0034] Figure 5 for Figure 1 Schematic diagram of the structure of the air conditioner;

[0035] Figure 6 for Figure 1 Schematic diagram of the structure of the middle air guide.

[0036] Reference numerals:

[0037] 10: High voltage box;

[0038] 20: Battery;

[0039] 100: Battery cabinet;

[0040] 110: First cabin;

[0041] 120: windshield;

[0042] 130: circulation gap;

[0043] 200: electrical cabinet;

[0044] 210: Second cabin;

[0045] 211: first wind control component;

[0046] 220: Third cabin;

[0047] 221: second wind control part;

[0048] 300: Liquid cooling unit;

[0049] 310: Liquid cooling unit;

[0050] 320: cold plate;

[0051] 400: air cooling unit;

[0052] 401: air outlet;

[0053] 402: Return air outlet;

[0054] 410: Air conditioning;

[0055] 420: air guide;

[0056] 421: extension;

[0057] 4211: main air outlet;

[0058] 4201: secondary air outlet;

[0059] 4202: First air supply port;

[0060] 4203: The second air supply vent. DETAILED DESCRIPTION

[0061] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of methods and devices consistent with some aspects of the present application as detailed in the appended claims.

[0062] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0063] At present, energy storage equipment is divided into two major parts: battery and electrical. Among them, the battery is cooled by a liquid cooling system, but the liquid cooling system cannot cool down the high-voltage box electrically connected to the battery. The high-voltage box is usually equipped with circuit breakers, pre-charge relays, fuses, shunts, pre-charge resistors, battery cluster management units BCU, switching power supplies, etc., which can easily cause the high-voltage box temperature to be too high during operation, affecting normal operation.

[0064] However, the electrical part dissipates heat through a separate air-cooled air conditioner, which is isolated from the battery's liquid cooling system. The thermal management system has a low level of integration, cannot achieve comprehensive cooling, and has low energy efficiency utilization.

[0065] In view of the above problems existing in the prior art, the present application provides an energy storage thermal management system and an energy storage device. The energy storage thermal management system provided by the present application includes a battery cabinet, an electrical cabinet, a liquid cooling unit, an air cooling unit and a control unit. At least one first compartment is provided on the battery cabinet, and at least one high-voltage box and at least one battery are installed in the first compartment. At least one second compartment is provided on the electrical cabinet for arranging electrical components. The liquid cooling unit is provided to abut against at least part of the surface of the battery, so as to facilitate cooling the battery. The air cooling unit is provided to be connected with the first compartment and the second compartment in sequence to form a first air cooling circuit. When the temperature of the battery is greater than or equal to the first preset temperature, the control unit controls the liquid cooling unit to cool the battery and the wind passing through the liquid cooling unit. When the temperature of the high-voltage box is greater than or equal to the second preset temperature, the air cooling unit is controlled to cool the high-voltage box and the second compartment in sequence. The second preset temperature is greater than the first preset temperature. By using the liquid cooling unit to cool the passing wind, it is convenient to cool the electrical components in the second compartment by air, thereby improving the energy efficiency utilization rate.

[0066] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0067] First, please refer to Figure 1-Figure 6 As shown, an embodiment of the present application provides an energy storage thermal management system, including a battery cabinet 100, an electrical cabinet 200, a liquid cooling unit 300, an air cooling unit 400 and a control unit.

[0068] The battery cabinet 100 has at least one first compartment 110 , and the first compartment 110 is used to install at least one high-voltage box 10 and at least one battery 20 .

[0069] The electrical cabinet 200 has at least one second compartment 210 , the liquid cooling unit 300 is used to abut against at least part of the surface of the battery 20 , and the air cooling unit 400 is sequentially connected to the first compartment 110 and the second compartment 210 to form a first air cooling circuit.

[0070] The control unit is configured to, when the temperature of the battery 20 is greater than or equal to a first preset temperature, control the liquid cooling unit 300 to cool the battery 20 and the wind passing through the liquid cooling unit 300. When the temperature of the high-voltage box 10 is greater than or equal to a second preset temperature, control the wind cooling unit 400 to sequentially wind cool the high-voltage box 10 and the second compartment 210. The second preset temperature is greater than the first preset temperature.

[0071] The battery cabinet 100 in this embodiment may be a closed frame structure, which has one or more first compartments 110, and each first compartment 110 may house a high-voltage box 10 and one or more batteries 20. The high-voltage box 10 is equipped with a circuit breaker, a pre-charge relay, a fuse, a shunt, a pre-charge resistor, a battery cluster management unit BCU, a switching power supply, etc., which are electrically connected to the battery 20. Multiple batteries 20 can form a battery cluster by being connected in series, associated or mixed, and the battery 20 is roughly a rectangular parallelepiped structure.

[0072] The electrical cabinet 200 in this embodiment may also be a closed frame structure, which has one or more second compartments 210 therein, and the second compartments 210 are used to house components such as electrical control.

[0073] The liquid cooling unit 300 in this embodiment is used to cool the battery 20 , and may be composed of components such as a cold plate. The liquid cooling unit 300 abuts against at least part of the surface of the battery 20 so that the high temperature generated by the battery 20 is transferred to the liquid cooling unit 300 .

[0074] The air cooling unit 400 in this embodiment is used for cooling the environment, and it can be composed of components such as air conditioners. After the air cooling unit 400 discharges air, it passes through the first compartment 110 and the second compartment 210 in sequence, and then returns to the air cooling unit 400 to form a first air cooling circuit, completing the air cooling cycle.

[0075] The control unit in this embodiment can be electrically connected to the high-voltage box 10, the battery 20, the liquid cooling unit 300, and the air cooling unit 400 to obtain the current temperature information of the high-voltage box 10 and the battery 20, and to facilitate the start and stop of the liquid cooling unit 300 and the air cooling unit 400.

[0076] Specifically, if Figure 1 As shown, when the temperature of the battery 20 is greater than or equal to the first preset temperature, the control unit controls the liquid cooling unit 300 to cool the battery 20 and the wind passing through the liquid cooling unit 300, and when the temperature of the high-voltage box 10 is greater than or equal to the second preset temperature, controls the air cooling unit 400 to cool the high-voltage box 10 and the second compartment 210 in sequence. The direction of the wind is as shown in FIG. Figure 1 As shown in the direction of the middle arrow, the second preset temperature is greater than the first preset temperature.

[0077] It is worth noting that since the optimal operating temperature of the battery 20 is around 25°C, and the working temperatures of the high-voltage box, electrical components, etc. are generally higher than the operating temperature of the battery 20, the low-temperature wind absorbs heat and heats up when passing through the high-voltage box 10 in the first compartment 110, and when passing through the heat exchange surface of the liquid cooling unit 300 in the first compartment 110, the liquid cooling unit 300 can cool the wind and make full use of the cooling capacity of the liquid cooling unit 300 to subsequently cool down the environment in the first compartment 110 and the second compartment 210.

[0078] It should be noted that the first preset temperature and the second preset temperature can be determined according to actual needs and are not specifically limited in this embodiment. The temperature of the high-voltage box 10 and the battery 20 can be measured by their own integrated temperature detection components or by another temperature detection component.

[0079] It can be understood that, compared with the prior art in which the refrigeration systems of the battery part and the electrical part are independent of each other, the application of the energy storage thermal management system in the embodiment of the present application, by utilizing the liquid cooling unit 300 to cool the passing air, facilitates the subsequent air cooling of the electrical components in the second compartment 210, thereby improving energy efficiency utilization.

[0080] Therefore, the energy storage thermal management system provided in the embodiment of the present application includes a battery cabinet 100, an electrical cabinet 200, a liquid cooling unit 300, an air cooling unit 400 and a control unit. At least one first compartment 110 is provided in the battery cabinet 100, and at least one high-voltage box 10 and at least one battery 20 are installed in the first compartment 110. At least one second compartment 210 is provided on the electrical cabinet 200 for arranging electric and gas components. The liquid cooling unit 300 is provided to abut against at least part of the surface of the battery 20 to facilitate cooling the battery 20. The air cooling unit 400 is provided to abut against the first compartment 110, The second compartment 210 is connected and forms a first air cooling circuit. When the temperature of the battery 20 is greater than or equal to the first preset temperature, the control unit controls the liquid cooling unit 300 to cool the battery 20 and the wind passing through the liquid cooling unit 300, and when the temperature of the high-pressure box 10 is greater than or equal to the second preset temperature, the control unit controls the air cooling unit 400 to cool the high-pressure box 10 and the second compartment 210 in turn. The second preset temperature is greater than the first preset temperature. By using the liquid cooling unit 300 to cool the passing wind, it is convenient to subsequently air cool the electrical components in the second compartment 210, thereby improving energy efficiency utilization.

[0081] In a possible design, the electrical cabinet 200 further has at least one third compartment 220 , and the air cooling unit 400 is also connected to the first compartment 110 and the third compartment 220 in sequence to form a second air cooling circuit.

[0082] The control unit is further configured to control the air cooling unit 400 to sequentially air cool the high-voltage box 10 and the third compartment 220 when the temperature of the high-voltage box 10 is greater than or equal to a second preset temperature.

[0083] Specifically, Figure 1As shown, the electrical cabinet 200 may also have one or more third compartments 220, and the third compartment 220 may be used to place electrical components such as medium-voltage components. After the air is discharged from the air cooling unit 400, it passes through the first compartment 110 and the third compartment 220 in sequence, and then returns to the air cooling unit 400 to form a second air cooling circuit, completing the air cooling cycle.

[0084] This arrangement allows for air cooling of multiple compartments at the same time, meeting the air cooling requirements for different types of electrical components.

[0085] Furthermore, in the present embodiment, a first wind control member 211 is disposed between the first cabin 110 and the second cabin 210 , and a second wind control member 221 is disposed between the first cabin 110 and the third cabin 220 .

[0086] The control unit is also configured to control the first wind control element 211 to increase the ventilation area and control the second wind control element 221 to reduce the ventilation area when the temperature in the second compartment 210 is greater than or equal to the third preset temperature and the temperature in the third compartment 220 is less than the fourth preset temperature.

[0087] The control unit is also configured to control the first wind control element 211 to reduce the ventilation area and control the second wind control element 221 to increase the ventilation area when the temperature in the second compartment 210 is lower than the third preset temperature and the temperature in the third compartment 220 is greater than or equal to the fourth preset temperature.

[0088] The control unit is also configured to control the first air control element 211 and the second air control element 221 to adjust the ventilation area to the maximum when the temperature in the second compartment 210 is lower than the third preset temperature and the temperature in the third compartment 220 is lower than the fourth preset temperature, and when the temperature in the second compartment 210 is greater than or equal to the third preset temperature and the temperature in the third compartment 220 is greater than or equal to the fourth preset temperature.

[0089] Specifically, Figure 1 , Figure 3 , Figure 4 As shown, the first wind control member 211 and the second wind control member 221 are equivalent to valves for opening and closing the air duct or adjusting the size of the ventilation area. Both can be electric blinds. The first wind control member 211 is arranged between the first cabin 110 and the second cabin 210, and the second wind control member 221 is arranged between the first cabin 110 and the third cabin 220. The first wind control member 211 and the second wind control member 221 can control the amount of air according to which cabin needs how much cold air.

[0090] In other words, when the temperature in the second compartment 210 and the third compartment 220 exceeds or does not exceed the set upper limit temperature, the first air cooling circuit and the second air cooling circuit are fully opened. When the temperature in one of the second compartment 210 and the third compartment 220 exceeds the set upper limit temperature, the air cooling circuit of the other compartment adjusts the air volume to allow more air to enter the compartment that needs to be cooled more. In this way, the compartment that urgently needs to be cooled can be cooled quickly, thereby improving reliability.

[0091] It should be noted that the third preset temperature and the fourth preset temperature can be determined according to actual needs and are not specifically limited in this embodiment. In addition, the temperature in the second compartment 210 and the third compartment 220 can be measured by a temperature detection component, and the temperature detection component is electrically connected to the control unit. The specific model, quantity, position, etc. of the temperature detection component can be determined according to actual needs and are not specifically limited in this embodiment.

[0092] Furthermore, in this embodiment, the maximum ventilation area of ​​the first air control member 211 is greater than the maximum ventilation area of ​​the second air control member 221 .

[0093] Since the second compartment 210 is equipped with control electrical components, which are more sensitive to high temperature and require more cooling, while the third compartment 220 is equipped with medium voltage electrical components, which are not particularly sensitive to high temperature and require relatively less cooling. Therefore, in the state, it is set to allow more cooling air to enter the second compartment 210. The specific size of the maximum ventilation area of ​​the two can be determined according to actual needs and is not specifically limited in this embodiment.

[0094] In some embodiments, the air cooling unit 400 is also connected to the second compartment 210 to form a first air supply duct.

[0095] And / or, the air cooling unit 400 is also connected to the third compartment 220 to form a second air supply duct.

[0096] That is, part of the outlet air of the air cooling unit 400 directly passes through the second compartment 210 and then returns to the return air of the air cooling unit 400. Alternatively, part of the outlet air of the air cooling unit 400 directly passes through the third compartment 220 and then returns to the return air of the air cooling unit 400.

[0097] In this way, while the first compartment 110 is cooled by air, a portion of the cold air is also distributed to the second compartment 210 and the third compartment 220, so as to prevent the electrical components in the second compartment 210 and the third compartment 220 from heating up too quickly. The air volume in the first air supply duct and the second air supply duct can be determined according to actual needs and is not specifically limited in this embodiment.

[0098] Furthermore, in this embodiment, the air cooling unit 400 includes an air conditioner 410 and an air guide 420 , and the air conditioner 410 has an air outlet 401 and an air return outlet 402 .

[0099] The air outlet 401 is communicated with the first compartment 110 , the second compartment 210 , and the third compartment 220 respectively through the air guide 420 , and the second compartment 210 and the third compartment 220 are communicated with the return air outlet 402 respectively.

[0100] Specifically, Figure 5 , Figure 6 As shown, the air conditioner 410 can be an integrated machine or include an indoor unit and an outdoor unit. The air outlet 401 on the air conditioner 410 is a cold air outlet, and the air guide 420 is equivalent to a multi-way branch pipe. After the cold air from the air outlet 401 enters the air guide 420, it is respectively supplied to the first cabin 110, the second cabin 210, and the third cabin 220, thereby playing the role of distributing air.

[0101] Further, in this embodiment, a plurality of first compartments 110 are arranged along a first direction on the battery cabinet 100, and an air duct is provided in the air guide 420. One side of the air guide 420 is connected to the air conditioner 410, and the air duct is communicated with the air outlet 401, and the other side of the air guide 420 is connected to the battery cabinet 100 and extends into one of the first compartments 110.

[0102] The air guide 420 has at least one extension portion 421 on one side located in the first compartment 110, and the extension portion 421 extends in the first direction. The extension portion 421 has a main air port 4211 connected to the air duct. The air guide 420 also has at least one secondary air port 4201 connected to the air duct, and the secondary air port 4201 is used to face the high-pressure box 10.

[0103] The air guide 420 also has a first air supply port 4202 and a second air supply port 4203 connected to the air duct. The first air supply port 4202 is connected to the second cabin 210 , and the second air supply port 4203 is connected to the third cabin 220 .

[0104] Specifically, Figure 1 As shown, a plurality of first compartments 110 are arranged side by side in a transverse direction on the battery cabinet 100 , and each first compartment 110 is provided with a high-voltage box 10 and a plurality of batteries 20 .

[0105] For example Figure 6 As shown, the air guide 420 can be in the shape of a shell with a hollow structure inside, one end of which is connected to the air outlet 401, and the other end is inserted into the battery cabinet 100 to a first compartment 110. The air guide 420 has at least one extension 421 on one side located in the first compartment 110, and the extension 421 has a main air outlet 4211, such as an air guide branch pipe, for distributing cold air to each first compartment 110.

[0106] Moreover, the air guide 420 also has a secondary air port 4201, which faces the adjacent high-pressure box 10. In addition, the air guide 420 also has a first air supply port 4202 and a second air supply port 4203, the first air supply port 4202 is directly connected to the second cabin 210, and the second air supply port 4203 is directly connected to the third cabin 220 for air supply. The specific size and position of each of the air ports can be determined according to actual needs, and are not specifically limited in this embodiment.

[0107] Furthermore, in this embodiment, a wind shield 120 is provided in the battery cabinet 100 , and the wind shield 120 is used to shield the high-voltage box 10 and the battery 20 , and a flow gap 130 is left between the wind shield 120 and the inner wall of the first compartment 110 .

[0108] Specifically, Figure 1 , Figure 2 As shown, the windshield 120 is used to block the wind, which can be a partition. The windshield 120 can prevent the cold wind from blowing directly to the battery 20, but first fully cools the high-voltage box 10 and then enters the gap between the battery 20 and the inner wall of the first compartment 110 through the circulation gap 130 to fully exchange heat. The specific size and position of the circulation gap 130 can be determined according to actual needs, and are not too limited in this embodiment.

[0109] Furthermore, in this embodiment, the liquid cooling unit 300 includes a liquid cooling unit 310 and at least one cold plate 320 , and the liquid cooling unit 310 is connected to the cold plate 320 by pipelines to form a liquid cooling loop.

[0110] The liquid cooling unit 310 is electrically connected to the control unit, and the cold plate 320 is used to abut against the battery 20 .

[0111] Specifically, the cold plate 320 can be a plate-shaped, shell-shaped or other structure with a flow channel inside. The cold plate 320 can abut against the large surface of the battery 20, and a thermal conductive agent can be filled between the two. One cold plate 320 is connected to one battery, and gaps are left between adjacent batteries 20.

[0112] The liquid cooling unit 310 is connected to the cold plate 320 by pipes to form a liquid cooling loop, so that the heat generated by the battery 20 is taken away from the cold plate 320 through the circulation of the refrigerant, and the heat is released to the external environment through the condenser, thereby achieving the purpose of cooling.

[0113] The liquid cooling unit 310 is electrically connected to the control unit so that the control unit can control the start and stop of the liquid cooling unit 310 when necessary. The shape and specifications of the cold plate 320 can be determined according to the actual needs of the battery 20. Correspondingly, the liquid cooling unit 310 can be determined according to the actual number of cold plates 320, etc., which is not specifically limited in this embodiment.

[0114] In a second aspect, an embodiment of the present application further provides an energy storage device, including a device body, on which the energy storage management system provided by any of the above embodiments is disposed.

[0115] Among them, the energy storage thermal management system has been introduced in detail in the above embodiments, and will not be described in detail here.

[0116] Specifically, the equipment body can be a container-type structure or a modular structure that integrates the battery cabinet 100, the electrical cabinet 200, the liquid cooling unit 300, the air cooling unit 400 and the control unit, which is convenient for overall lifting operations, etc. The temperature of the battery cabinet 100, the electrical cabinet 200, the liquid cooling unit 300, the air cooling unit 400 and the control unit is controlled by the above-mentioned energy storage management system to ensure the stable operation of the energy storage equipment.

[0117] It can be understood that the energy storage device provided in the embodiment of the present application is configured with the above-mentioned energy storage thermal management system, which includes a battery cabinet 100, an electrical cabinet 200, a liquid cooling unit 300, an air cooling unit 400 and a control unit, by providing at least one first compartment 110 in the battery cabinet 100, and installing at least one high-voltage box 10 and at least one battery 20 in the first compartment 110, by providing at least one second compartment 210 on the electrical cabinet 200 for arranging electric and gas components, by providing a liquid cooling unit 300 in contact with at least part of the surface of the battery 20, so as to facilitate cooling the battery 20, and by providing an air cooling unit 400 It is connected with the first compartment 110 and the second compartment 210 in sequence to form a first air-cooling circuit. When the temperature of the battery 20 is greater than or equal to the first preset temperature, the control unit controls the liquid cooling unit 300 to cool the battery 20 and the wind passing through the liquid cooling unit 300. When the temperature of the high-pressure box 10 is greater than or equal to the second preset temperature, the control unit controls the air cooling unit 400 to cool the high-pressure box 10 and the second compartment 210 in sequence. The second preset temperature is greater than the first preset temperature. By utilizing the liquid cooling unit 300 to cool the passing wind, it is convenient to subsequently cool the electrical components in the second compartment 210 by air, thereby improving energy efficiency utilization.

[0118] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.

[0119] It should be understood that the present application is not limited to the precise structures described above and shown in the appended drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An energy storage thermal management system, characterized in that: It comprises a battery cabinet (100), an electrical cabinet (200), a liquid cooling unit (300), an air cooling unit (400) and a control unit; The battery cabinet (100) has at least one first compartment (110), wherein the first compartment (110) is used to install at least one high-voltage box (10) and at least one battery (20); The electrical cabinet (200) has at least one second compartment (210), the liquid cooling unit (300) is used to abut against at least a portion of the surface of the battery (20), and the air cooling unit (400) is sequentially connected to the first compartment (110) and the second compartment (210) to form a first air cooling circuit; The control unit is configured to, when the temperature of the battery (20) is greater than or equal to a first preset temperature, control the liquid cooling unit (300) to cool the battery (20) and the wind passing through the liquid cooling unit (300); and, when the temperature of the high-voltage box (10) is greater than or equal to a second preset temperature, control the wind cooling unit (400) to sequentially wind cool the high-voltage box (10) and the second compartment (210); wherein the second preset temperature is greater than the first preset temperature.

2. The energy storage thermal management system according to claim 1, characterized in that: The electrical cabinet (200) further comprises at least one third compartment (220), and the air cooling unit (400) is further connected to the first compartment (110) and the third compartment (220) in sequence to form a second air cooling circuit; The control unit is further configured to control the air cooling unit (400) to sequentially air cool the high-pressure box (10) and the third chamber (220) when the temperature of the high-pressure box (10) is greater than or equal to the second preset temperature.

3. The energy storage thermal management system according to claim 2, characterized in that: A first wind control member (211) is provided between the first cabin (110) and the second cabin (210), and a second wind control member (221) is provided between the first cabin (110) and the third cabin (220); The control unit is further configured to, when the temperature in the second chamber (210) is greater than or equal to a third preset temperature and the temperature in the third chamber (220) is less than a fourth preset temperature, control the first air control member (211) to increase the ventilation area, and control the second air control member (221) to reduce the ventilation area; The control unit is further configured to, when the temperature in the second chamber (210) is lower than the third preset temperature and the temperature in the third chamber (220) is higher than or equal to the fourth preset temperature, control the first air control member (211) to reduce the ventilation area, and control the second air control member (221) to increase the ventilation area; The control unit is further configured to control the first air control element (211) and the second air control element (221) to adjust the ventilation area to the maximum when the temperature in the second compartment (210) is lower than the third preset temperature and the temperature in the third compartment (220) is lower than the fourth preset temperature, and when the temperature in the second compartment (210) is greater than or equal to the third preset temperature and the temperature in the third compartment (220) is greater than or equal to the fourth preset temperature.

4. The energy storage thermal management system according to claim 3, characterized in that: The maximum ventilation area of ​​the first air control member (211) is greater than the maximum ventilation area of ​​the second air control member (221).

5. The energy storage thermal management system according to claim 2, characterized in that: The air cooling unit (400) is also in communication with the second cabin (210) to form a first air supply duct; And / or, the air cooling unit (400) is also connected to the third chamber (220) to form a second air supply duct.

6. The energy storage thermal management system according to claim 5, characterized in that: The air cooling unit (400) comprises an air conditioner (410) and an air guide (420); the air conditioner (410) is provided with an air outlet (401) and an air return outlet (402); The air outlet (401) is respectively connected to the first compartment (110), the second compartment (210), and the third compartment (220) through the air guide (420); the second compartment (210) and the third compartment (220) are respectively connected to the return air outlet (402).

7. The energy storage thermal management system according to claim 6, characterized in that: A plurality of the first compartments (110) are arranged along a first direction on the battery cabinet (100), and an air duct is provided in the air guide (420); one side of the air guide (420) is connected to the air conditioner (410), and the air duct is communicated with the air outlet (401); the other side of the air guide (420) is connected to the battery cabinet (100) and extends into one of the first compartments (110); The air guide member (420) has at least one extension portion (421) on one side located in the first compartment (110), the extension portion (421) extending in the first direction, the extension portion (421) having a main air port (4211) in communication with the air duct, and the air guide member (420) also has at least one secondary air port (4201) in communication with the air duct, the secondary air port (4201) being used to face the high-pressure box (10); The air guide member (420) also has a first air supply port (4202) and a second air supply port (4203) connected to the air duct, wherein the first air supply port (4202) is connected to the second compartment (210), and the second air supply port (4203) is connected to the third compartment (220).

8. The energy storage thermal management system according to claim 7, characterized in that: The battery cabinet (100) is provided with a wind shield (120), the wind shield (120) being used to shield the high-voltage box (10) and the battery (20), and a flow gap (130) is left between the wind shield (120) and the inner wall of the first compartment (110).

9. The energy storage thermal management system according to any one of claims 1 to 8, characterized in that: The liquid cooling unit (300) comprises a liquid cooling unit (310) and at least one cold plate (320); the liquid cooling unit (310) and the cold plate (320) are connected via pipelines to form a liquid cooling loop; The liquid cooling unit (310) is electrically connected to the control unit, and the cold plate (320) is used to abut against the battery (20).

10. An energy storage device, characterized in that: It comprises a device body, on which is arranged the energy storage thermal management system according to any one of claims 1 to 9.

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