Heat dissipation system, energy storage auxiliary power supply system and energy storage system

Abstract

The utility model relates to a heat dissipation system, an energy storage auxiliary power supply system and an energy storage system, and the heat dissipation system comprises a temperature collection assembly which comprises a plurality of temperature sensors, and the plurality of temperature sensors are used for correspondingly collecting the temperatures of regions where a plurality of to-be-cooled devices in the energy storage auxiliary power supply system are located; the first heat dissipation assembly comprises a plurality of radiators, and the radiators are correspondingly arranged in the areas where the to-be-cooled devices are located; the cold air provided by the second heat dissipation assembly covers a plurality of devices to be subjected to heat dissipation; the controller is connected with the temperature acquisition assembly, the first heat dissipation assembly and the second heat dissipation assembly; based on the first heat dissipation assembly (multiple radiators) and the second heat dissipation assembly, the heat dissipation efficiency can be improved, and the service life of the device to be subjected to heat dissipation is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to a heat dissipation system, an energy storage auxiliary power supply system, and an energy storage system. Background Art

[0002] Today, the energy storage industry has entered the fast lane, and new technologies are constantly emerging.

[0003] An energy storage system generally includes energy storage batteries, a power conversion system (PCS), a battery management system (BMS), an energy management system (EMS), an auxiliary power supply system, and a fire protection system. The auxiliary power supply system contains multiple electrical components with high heat dissipation, such as circuit breakers and switching power supplies.

[0004] In the prior art, one or two cooling fans are typically installed in an energy storage auxiliary power supply system, along with a temperature control switch. When the temperature control switch detects that the ambient temperature of the energy storage auxiliary power supply system reaches a set temperature, the fan power circuit is switched on, and the fans begin operating. However, this cooling method is ineffective and can shorten the service life of electrical components with high heat dissipation. Utility Model Content

[0005] Based on this, it is necessary to provide a heat dissipation system, an energy storage auxiliary power supply system and an energy storage system. Based on the setting of a first heat dissipation component (multiple radiators) and a second heat dissipation component, the heat dissipation efficiency can be improved and the service life of the device to be cooled can be increased.

[0006] In a first aspect, an embodiment of the present application provides a heat dissipation system, which is provided in an auxiliary power supply cabinet of an energy storage system. The heat dissipation system includes:

[0007] A temperature acquisition component, comprising a plurality of temperature sensors, wherein the plurality of temperature sensors are used to respectively acquire the temperatures of the areas where the plurality of heat dissipation devices in the auxiliary power supply cabinet are located;

[0008] A first heat dissipation component includes a plurality of heat sinks, which are arranged in the auxiliary power supply cabinet, and the plurality of heat sinks are respectively arranged in corresponding areas where the plurality of components to be cooled are located;

[0009] The second heat dissipation component is arranged in the auxiliary power supply cabinet, and the cold air provided by the second heat dissipation component covers the multiple devices to be cooled.

[0010] In one embodiment, the heat dissipation system further comprises:

[0011] A first power supply circuit is connected to the energy storage battery, the first heat dissipation component, and the second heat dissipation component respectively;

[0012] a second power supply circuit connected to the AC mains, the first heat dissipation component, and the second heat dissipation component respectively;

[0013] The first power supply circuit and the second power supply circuit work in a time-sharing manner to supply power to the first heat dissipation component and the second heat dissipation component.

[0014] In one embodiment, the first power supply circuit includes:

[0015] a first conversion unit, connected to the energy storage battery, the first heat dissipation component, and the second heat dissipation component, respectively, for converting a direct current signal into an alternating current signal;

[0016] The first switch is provided on the power supply path where the first converter is located, and is used for selectively switching on or off the power supply path where the first converter is located.

[0017] In one embodiment, the first conversion unit includes:

[0018] a first converter, connected to the energy storage battery, for converting a DC signal into an AC signal;

[0019] The second converter is connected to the first converter, the first heat dissipation component, and the second heat dissipation component respectively, and is used to support voltage conversion of the AC signal.

[0020] In one embodiment, the second power supply circuit includes:

[0021] a third converter, connected to the AC mains, the first heat dissipation component, and the second heat dissipation component, respectively, and configured to support voltage conversion of the AC power signal;

[0022] The second switch is provided on the power supply path where the third converter is located, and is used for selectively switching on or off the power supply path between the third converter and the AC mains.

[0023] In one embodiment, the second converter and the third converter are the same converter.

[0024] In a second aspect, the present application further provides an auxiliary power supply cabinet, comprising:

[0025] an auxiliary power supply circuit, provided in an auxiliary power supply cabinet of the energy storage auxiliary power supply system, comprising an auxiliary power supply, a first circuit breaker and a transformer, wherein the first circuit breaker is provided on a power supply path between the auxiliary power supply and the transformer; and

[0026] The aforementioned heat dissipation system is arranged in the auxiliary power supply cabinet; wherein, the multiple heat dissipation components in the heat dissipation system include at least the first circuit breaker and the transformer.

[0027] In one embodiment, the energy storage auxiliary power supply system further includes: a second circuit breaker and a switching power supply, wherein a first end of the second circuit breaker is connected to the transformer, a second end of the second circuit breaker is connected to a first end of the switching power supply, and a second end of the switching power supply is used to connect to a power supply device; wherein,

[0028] The second circuit breaker and the switching power supply are respectively the components to be cooled.

[0029] In one embodiment, the energy storage auxiliary power supply system further includes: a third circuit breaker, a fire host, a fourth circuit breaker and an electric meter; wherein,

[0030] A first end of the third circuit breaker is connected to the transformer, and a second end of the third circuit breaker is connected to the fire host;

[0031] A first end of the fourth circuit breaker is connected to the transformer, and a second end of the fourth circuit breaker is connected to the electric meter;

[0032] Wherein, the third circuit breaker and the fourth circuit breaker are respectively the heat dissipation devices. In a third aspect, the present application further provides an energy storage system, comprising:

[0033] Energy storage batteries;

[0034] an energy storage converter connected to the energy storage battery; and

[0035] The aforementioned energy storage auxiliary power supply system; wherein, the first power supply circuit in the energy storage auxiliary power supply system is connected to the energy storage battery.

[0036] The above-mentioned heat dissipation system, energy storage auxiliary power supply system and energy storage system include a temperature acquisition component, a first heat dissipation component and a second heat dissipation component; wherein, the multiple temperature sensors in the temperature acquisition component can respectively collect the temperatures of the areas where the multiple devices to be dissipated in the energy storage auxiliary power supply system are located, and the multiple radiators in the first heat dissipation component are respectively arranged in the areas where the multiple devices to be dissipated are located. The cold air provided by the second heat dissipation component covers the multiple devices to be dissipated. Through the coordinated work of the radiators of the first heat dissipation component and the second heat dissipation component, the cooling load is reasonably distributed, the heat dissipation of the devices to be dissipated can be accelerated, the heat dissipation effect is good, and the temperature of each device to be dissipated can be efficiently and accurately controlled within a predetermined range, thereby extending the service life of the devices to be dissipated and improving the stability of the energy storage auxiliary power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 This is a schematic diagram of a structural framework of a heat dissipation system according to an embodiment;

[0039] Figure 2 This is a second schematic diagram of the structural framework of a heat dissipation system according to an embodiment;

[0040] Figure 3 This is a third schematic diagram of the structural framework of a heat dissipation system according to an embodiment;

[0041] Figure 4 This is a fourth schematic diagram of the structural framework of a heat dissipation system according to an embodiment;

[0042] Figure 5 This is a fifth structural framework diagram of a heat dissipation system according to an embodiment;

[0043] Figure 6 A schematic diagram of the structural framework of an energy storage auxiliary power supply system according to an embodiment;

[0044] Figure 7 Schematic diagram of the structural framework of an energy storage system according to an embodiment.

[0045] Description of reference numerals:

[0046] 1-Auxiliary power supply cabinet; 110-Temperature acquisition component; 111-Temperature sensor; 120-First heat dissipation component; 121-Radiator; 130-Second heat dissipation component; 140-Controller; 150-First power supply circuit; 151-First converter; 152-Second converter; 153-First switch; 160-Second power supply circuit; 161-Third converter; 162-Second switch; 10-Cooling system; 510-Auxiliary power supply circuit; 511-Auxiliary power supply; 512-First circuit breaker; 513-Transformer; 521-Second circuit breaker; 522-Switching power supply; 523-Third circuit breaker; 524-Fire control unit; 525-Fourth circuit breaker; 526-Electric meter; 527-Local controller; 528-Lighting; 529-Switch; 601-Battery cluster; 602-Energy storage inverter; 603-DC-DC converter. DETAILED DESCRIPTION

[0047] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0049] It will be understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor without departing from the scope of this application. The first resistor and the second resistor are both resistors, but they are not the same resistor.

[0050] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if there is transmission of electrical signals or data between the connected circuits, modules, units, etc.

[0051] It is understood that “at least one” refers to one or more, “a plurality” refers to two or more, and “at least a portion of an element” refers to a portion or all of an element.

[0052] As used herein, the singular forms "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include," "comprising," "having," and the like specify the presence of stated features, integers, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, components, parts, or combinations thereof. Furthermore, the term "and / or" as used in this specification includes any and all combinations of the relevant listed items.

[0053] like Figure 1As shown, an embodiment of the present application provides a heat dissipation system, which is arranged in the auxiliary power supply cabinet 1 of the energy storage system. The energy storage system generally may include an energy storage battery, an energy storage converter, a battery management system, an energy management system, an energy storage auxiliary power supply system and a fire protection system. Among them, the auxiliary power supply cabinet of the energy storage auxiliary power supply system has multiple electrical components with large heat dissipation, such as circuit breakers, switching power supplies, etc. The heat dissipation system provided in the embodiment of the application may include a temperature acquisition component 110, a first heat dissipation component 120 and a second heat dissipation component 130. Among them, the temperature acquisition component 110 includes multiple temperature sensors 111, and the multiple temperature sensors 111 are used to respectively collect the temperatures of multiple components to be dissipated.

[0054] In the embodiment of the present application, the heat dissipation system is applied to the auxiliary power supply cabinet 1 as an example for explanation. The device to be dissipated heat can be a device with a large amount of heat dissipation in the auxiliary power supply cabinet 1, and the device with a large amount of heat dissipation includes but is not limited to a transformer, a switching power supply, various circuit breakers, etc. The number of temperature sensors 111 and the device to be dissipated heat can be the same or different. For example, if the number of temperature sensors 111 is the same as the number of devices to be dissipated heat, a temperature sensor 111 is set at each device to be dissipated heat. At this time, one temperature sensor 111 can collect the temperature of the area where the device to be dissipated heat is located. If the number of temperature sensors 111 is less than the number of devices to be dissipated heat, the distance between at least two radiators is close, and the temperatures of the areas where the radiators with a close distance are located are similar, then a temperature sensor 111 can be set to collect the temperature of the area where the radiator is located.

[0055] The first heat dissipation assembly 120 includes multiple heat sinks 121, each of which is positioned in a corresponding region where the heat dissipation devices are located. The number of temperature sensors 111 and heat sinks 121 can be the same, and each heat sink 121 can be positioned in a corresponding region where a temperature sensor 111 is located to dissipate heat for each heat dissipation device. In this embodiment of the present application, the heat sink 121 can be a fan, for example, that provides cooling air to the heat dissipation devices.

[0056] The cold air provided by the second heat dissipation assembly 130 covers a plurality of components to be cooled. In the embodiment of the present application, the second heat dissipation assembly 130 may include an air conditioning system, a cold air system, and the like.

[0057] In this embodiment, the heat dissipation system includes a temperature acquisition component, a first heat dissipation component, and a second heat dissipation component; wherein, the multiple temperature sensors in the temperature acquisition component can respectively collect the temperatures of the areas where the multiple devices to be dissipated in the auxiliary power supply cabinet are located, and the multiple radiators in the first heat dissipation component are respectively arranged in the areas where the multiple devices to be dissipated are located. The cold air provided by the second heat dissipation component covers the multiple devices to be dissipated. Through the coordinated work of the first heat dissipation component and the second heat dissipation component, the cooling load is reasonably distributed, the heat dissipation of the devices to be dissipated can be accelerated, the heat dissipation effect is good, and the temperature of each device to be dissipated can be efficiently and accurately controlled within a predetermined range, thereby extending the service life of the devices to be dissipated and improving the stability of the system.

[0058] like Figure 2 As shown, the heat dissipation system also includes a controller 140, which is respectively connected to the temperature acquisition component 110, the first heat dissipation component 120, and the second heat dissipation component 130. The controller 140 can control the start and stop of each radiator 121 in the first heat dissipation component 120 and the second heat dissipation component 130 based on the comparison results of each temperature collected by the temperature acquisition component 110 and the preset threshold. Herein, start and stop can be understood as starting or stopping work. Herein, the preset threshold is a temperature threshold, for example, it may include but not be limited to 25°, 26°, etc. When the temperature of the device to be dissipated reaches the corresponding preset threshold, it indicates that the device to be dissipated needs to be heat-dissipated, such as cooling treatment. In the embodiment of the present application, the preset thresholds of each device to be dissipated may be the same or different, and are not specifically limited here.

[0059] When the heat dissipation system is applied to an energy storage system, its controller 140 can be an auxiliary controller of the energy storage system, for example, a local controller (LC) or a battery system controller (BSC). In the embodiments of the present application, the application scenario of the heat dissipation system and the type of controller 140 are not specifically limited, nor are they limited to the above examples.

[0060] For example, if the temperature collected by any temperature sensor 111 is higher than a preset threshold, the controller 140 can control the first target radiator to start operating and dissipate heat for the device to be dissipated. In other words, the controller 140 can independently control each radiator 121 to dissipate heat for the device to be dissipated. The first target radiator is a radiator 121 located in an area where the temperature is higher than the preset threshold. This can be understood as the first target radiator being a radiator 121 located in an area where the device to be dissipated has a temperature higher than the preset threshold. In this way, based on the temperature information collected from each temperature sensor, the controller 140 can designate the radiator 121 located in an area where the temperature is higher than the preset threshold as the first target radiator, and control the first target radiator to start operating to dissipate heat for the device to be dissipated located in that area. Furthermore, if any collected temperature is higher than the preset threshold, the controller 140 can control the second heat dissipation component 130 to operate in a cooling mode, whereby the second heat dissipation component 130 can provide cold air to each device to be dissipated, thereby lowering the temperature of each device to be dissipated.

[0061] like Figure 3 As shown, the heat dissipation system includes a temperature acquisition component 110, a first heat dissipation component 120, a second heat dissipation component 130, a first power supply circuit 150, and a second power supply circuit 160. The first power supply circuit 150 and the second power supply circuit 160 can respectively supply power to the first heat sink component 120 and the second heat sink component 130 in the heat dissipation system.

[0062] Among them, the first power supply circuit 150 is connected to the energy storage battery 20, the first heat dissipation component 120, and the second heat dissipation component 130 respectively. The second power supply circuit 160 is connected to the AC mains 30, the first heat dissipation component 120, and the second heat dissipation component 130 respectively. Among them, the first power supply circuit 150 is connected to the energy storage battery 20, and the second power supply circuit 160 is connected to the AC mains 30. That is, the power sources of the first power supply circuit 150 and the second power supply circuit 160 in the embodiment of the present application are different, namely the AC mains 30 and the energy storage battery 20 respectively. It can be understood that the first power supply circuit 150 can be understood as a battery power supply circuit, and the second power supply circuit 160 can be understood as a mains power supply circuit. The first power supply circuit 150 and the second power supply circuit 160 can work in time-sharing mode.

[0063] Optionally, if the heat dissipation system includes a controller, the controller may be connected to the first power supply circuit and the second power supply circuit respectively, so as to control the operation of the first power supply circuit and the second power supply circuit in a time-sharing manner.

[0064] In this embodiment, the cooling system has two power sources, namely the energy storage battery 20 and the AC mains 30. It has dual power supply paths, specifically including a first power supply circuit 150 and a second power supply circuit 160. In this way, the controller 140 can determine the target power supply circuit based on the power supply demand or the relevant operating parameters of the AC mains 30 and the energy storage battery 20. In the event of a failure in any power supply circuit, the other power supply circuit can be controlled to operate, thereby ensuring the stability and reliability of the power supply of the cooling system. Figure 4 As shown, first power supply circuit 150 includes a first conversion unit (not shown) and a first switch 153. First switch 153 is provided on the power supply path where the first conversion unit is located and is used to selectively connect or disconnect the power supply path where the first converter is located. For example, first switch 153 can be a circuit breaker, relay, or other electronic switch.

[0065] Optionally, if the heat dissipation system includes a controller 140, the controller 140 can realize on-off control of the first switch 153. When the first switch 153 is turned on, its first power supply circuit 150 is turned on and can supply power to the first radiator assembly 120 and the second radiator assembly 130.

[0066] Specifically, the conversion unit includes a first converter 151 and a second converter 152. The input of the first converter 151 is connected to the energy storage battery 20, the output of the first converter 151 is connected to the input of the second converter 152, and the output of the second converter 152 is connected to the first heat sink 120 and the second heat sink 130, respectively. The first converter 151 is used to convert a DC signal into an AC signal, and the second heat sink 130 is connected to support voltage conversion of the AC signal.

[0067] The first switch 153 can be set at any position between the energy storage battery and the second converter 152. For example, the first switch 153 can be set between the energy storage battery 20 and the first converter 151, or between the first converter 151 and the second converter 152.

[0068] The first converter 151 can be a power conversion module, such as a DC-AC converter, which can convert the received DC signal into an AC signal. The second converter 152 can be a power management module, such as an AC-AC converter, which can perform voltage step-up and step-down processing on the received AC signal and output the corresponding AC signal to each heat sink 121 and the second heat dissipation assembly 130.

[0069] In this embodiment, two converters are provided on the first power supply circuit 150, for example, a DC-AC converter and an AC-AC converter, which can convert the DC power signal provided by the energy storage battery 20 into the AC signal required by the device to be powered, and can accurately provide the required power supply voltage for each heat sink 121 in the first heat dissipation component 130 and the second heat dissipation component 130.

[0070] Please continue to refer to Figure 4 In one embodiment, the second power supply circuit 160 includes a third converter 161 and a second switch 162. The third converter 161 is connected to the AC mains 30, the first heat dissipation component 120, and the second heat dissipation component 130, respectively, and the third converter 161 can convert the received AC mains signal into an AC voltage. The second switch 162 is provided on the power supply path where the third converter 161 is located, and is used to select to turn on or off the power supply path where the third converter 161 is located. The third converter 161 can be a power management module, for example, an AC-AC converter, which can boost the received AC signal and output the corresponding AC signal to each heat sink 121 and the second heat dissipation component 130 in the first heat dissipation component 130. Exemplarily, the second switch 162 can be a circuit breaker, a relay or other electronic switch.

[0071] Optionally, if the heat dissipation system includes a controller 140 , the controller 140 can realize on-off control of the second switch 162 . When the second switch 162 is turned on, its second power supply circuit 160 is turned on and can supply power to the first radiator assembly 120 and the second radiator assembly 130 .

[0072] like Figure 5 As shown, in one embodiment, the third converter 161 (such as Figure 6 ) and the second converter 152 in the aforementioned embodiment (as shown Figure 3 As shown) can be multiplexed, that is, it can be the same converter.

[0073] For ease of explanation, the first switch 153 is a circuit breaker S1, the second switch 162 is a circuit breaker S2, the first converter 151 is a DC-AC converter, and the second converter 152 and the third converter 161 are the same device (for example, the second converter 152) and are AC-AC converters.

[0074] The battery power supply circuit includes a circuit breaker S1, a DC-AC converter, and an AC-AC converter. The input of circuit breaker S1 is electrically connected to the output terminals BAT1+ and BAT1- of one cluster of energy storage batteries 20 in the energy storage system. The output of circuit breaker S1 is electrically connected to the input of the DC-AC converter, and the output of the DC-AC converter is electrically connected to the input of the AC-AC converter. The mains power supply circuit includes a circuit breaker S2 and an AC-AC converter. The input of circuit breaker S2 is electrically connected to the AC mains 30L and N, and the output of circuit breaker S2 is electrically connected to the input of the AC-AC converter. The input of the AC-AC converter comes from the AC mains 30 signal and the DC signal of the DC-AC converter. The voltage output of the AC-AC converter is connected to the first heat dissipation component 120 and the second heat dissipation component 130, respectively, to provide power to the first heat dissipation component 120 and the second heat dissipation component 130. Exemplarily, the AC-AC converter includes a first output end and a second output end, wherein the first output end is connected to each heat sink 121 in the first heat dissipation assembly 120 , and the second output end is connected to the second heat dissipation assembly 130 .

[0075] In this embodiment, the heat dissipation system includes a first power supply circuit 150 (for example, a battery power supply circuit) and a second power supply circuit 160 (for example, a mains power supply circuit). It has dual power supply paths. In the event of a failure in either power supply circuit, the other power supply circuit can be controlled to operate, thereby ensuring the stability and reliability of the power supply to the heat dissipation system.

[0076] In the present embodiment, for ease of explanation, the radiator 121 is described as a fan, and the second heat dissipation assembly 130 is described as an air conditioning system. The controller 140 can be connected to each temperature sensor 111, each fan, and the air conditioning system, respectively, using Modbus RTU or CAN communication. The communication method between the controller 140 and the various components is not limited in the present embodiment and is not limited to the above example.

[0077] The controller 140 is also used to store the mapping relationship between the fan speed and temperature, and to control the corresponding fan speed according to the temperature and mapping relationship collected by each temperature sensor 111. For example, the controller 140 also includes a memory, and the memory stores the corresponding relationship between temperature and fan speed. For example, the temperature can be divided into multiple temperature intervals based on the size of the temperature, and each temperature interval corresponds to a fan speed, and different temperature intervals correspond to different speeds. It should be noted that the temperature is positively correlated with the speed, that is, the higher the temperature, the greater the corresponding speed.

[0078] In the embodiment of the present application, different devices to be cooled have different heat generation. The controller can control the speed of the fan in the area based on the temperature of the area where each device to be cooled is located, so as to provide each device to be cooled with an air volume that is adapted to the temperature of the area. The air volume can then be set individually for each device to be cooled. Compared with the related art, the fan can often only run at a uniform speed. A reasonable cooling capacity can be allocated to each device to be cooled, which can speed up the cooling speed of the device to be cooled, improve the cooling effect, and does not affect the long-term operating performance of the device to be cooled, thereby increasing the service life of the device to be cooled.

[0079] Optionally, the controller 140 is further configured to control the corresponding second target heat sink to stop operating if the temperature collected by any temperature sensor 111 is lower than a preset threshold, and to control the second heat dissipation assembly 130 to stop operating if the temperature collected by each temperature sensor 111 is lower than a preset threshold. The second target heat sink includes the heat sink 121 located in an area where the device to be dissipated, whose temperature is lower than the preset threshold, is located.

[0080] The controller can independently control each heat sink. For example, if the temperature in the area where the heat sink is located falls below a preset threshold, the controller can deactivate the corresponding heat sink in that area (referred to as the secondary target heat sink). This prevents the secondary target heat sink from operating continuously, thus reducing power consumption. Furthermore, the controller can deactivate the secondary heat sink component (i.e., the air conditioning system) if the temperature detected by each temperature sensor falls below a preset threshold, ensuring that the temperature of each heat sink is maintained within the preset threshold.

[0081] like Figure 6As shown, an embodiment of the present application also provides an energy storage auxiliary power supply system, which includes an auxiliary power supply circuit 510 and the heat dissipation system 10 of any of the aforementioned embodiments. The auxiliary power supply circuit 510 and the heat dissipation system 10 are both disposed within the auxiliary power supply cabinet 1 of the energy storage auxiliary power supply system. The auxiliary power supply circuit 510 can provide power and corresponding power supply control for the auxiliary power supply of the energy storage system. The auxiliary power supply circuit 510 includes an auxiliary power supply 511, a first circuit breaker 512, and a transformer 513. The first circuit breaker 512 is disposed in the power supply path between the auxiliary power supply 511 and the transformer 513. The first circuit breaker 512 can open or close the power supply path between the auxiliary power supply 511 and the transformer 513. The auxiliary power supply 511 can be a self-powered power source for the energy storage system. It is electrically connected to the transformer 513 via the first circuit breaker 512 to convert 400V voltage to 230V to power various loads in the energy storage auxiliary power supply system. The first circuit breaker 512 can be a molded case circuit breaker. During long-term operation of the energy storage auxiliary power supply system, some electrical components (e.g., transformer 513, molded case circuit breakers, various loads, etc.) generate a large amount of heat. Components that generate a large amount of heat, such as transformer 513 and molded case circuit breakers, can be components to be cooled in the cooling system 10.

[0082] The heat dissipation system in the energy storage auxiliary power supply system works in coordination with the first heat dissipation component and the second heat dissipation component, and the cooling load is reasonably distributed, which can accelerate the heat dissipation of electrical components such as transformers and molded case circuit breakers in the energy storage auxiliary power supply system. The heat dissipation effect is good, and the temperature of electrical components such as transformers and molded case circuit breakers can be efficiently and accurately controlled within a predetermined range, thereby extending the service life of electrical components such as transformers and molded case circuit breakers to ensure safe and stable operation of the components and improve system stability.

[0083] Please continue to refer to Figure 6 In one embodiment, the energy storage-assisted power supply system further includes a second circuit breaker 521 and a switching power supply 522. The first end of the second circuit breaker 521 is connected to the transformer 513, the second end of the second circuit breaker 521 is connected to the first end of the switching power supply 522, and the second end of the switching power supply 522 is connected to a power supply device. The power supply device may specifically include a local controller (LC) 527, a lighting fixture 528, a switch 529, and the like. Specifically, the second circuit breaker 521 may be a miniature circuit breaker. When the second circuit breaker 521 is turned on, the switching power supply 522 converts 230V AC power into 24V DC power, which is then supplied to 24V electrical components such as the local controller (LC) 527, the lighting fixture 528, and the switch 529.

[0084] Among them, the switching power supply 522 and the second circuit breaker 521 will also generate a large amount of heat during operation. The switching power supply 522 and the second circuit breaker 521 can also serve as heat dissipation devices of the heat dissipation system 10. Accordingly, the heat dissipation system 10 will provide corresponding heat sinks (such as fans) for the switching power supply 522 and the second circuit breaker 521. The cold air provided by the second heat dissipation component in the heat dissipation system 10 can also cover the switching power supply 522 and the second circuit breaker 521.

[0085] During the process of the energy storage auxiliary power supply system, the first heat dissipation component and the second heat dissipation component work in coordination and the cooling load is reasonably distributed, which can accelerate the heat dissipation of electrical components such as the transformer, molded case circuit breaker, switching power supply and second circuit breaker in the energy storage auxiliary power supply system. The heat dissipation effect is good, and the temperature of electrical components such as the transformer, molded case circuit breaker, switching power supply and second circuit breaker can be efficiently and accurately controlled within a predetermined range, thereby extending the service life of electrical components such as the transformer, molded case circuit breaker, switching power supply and second circuit breaker to ensure safe and stable operation of the components and improve system stability.

[0086] Please continue to refer to Figure 6 Optionally, the energy storage auxiliary power supply system further includes: a third circuit breaker 523, a fire control unit 524, a fourth circuit breaker 525, and an electric meter 526; wherein the first end of the third circuit breaker 523 is connected to the transformer 513, and the second end of the third circuit breaker 523 is connected to the fire control unit 524; the first end of the fourth circuit breaker 525 is connected to the transformer 513, and the second end of the fourth circuit breaker 525 is connected to the electric meter 526. The third circuit breaker 523 and the fourth circuit breaker 525 can be heat dissipation devices, respectively. In this embodiment, the third circuit breaker 523 and the fourth circuit breaker 525 can be miniature circuit breakers. When the first circuit breaker 512, the third circuit breaker 523, and the fourth circuit breaker 525 are turned on, the auxiliary power supply 511 can supply power to the fire control unit 524 and the electric meter 526, respectively. Among them, the third circuit breaker 523 and the fourth circuit breaker 525 will also generate a large amount of heat during operation. The third circuit breaker 523 and the fourth circuit breaker 525 can also be used as heat dissipation devices of the heat dissipation system 10 respectively. Accordingly, the heat dissipation system 10 will set corresponding heat sinks (such as fans) for the third circuit breaker 523 and the fourth circuit breaker 525, and the cold air provided by the second heat dissipation component in the heat dissipation system 10 can also cover the third circuit breaker 523 and the fourth circuit breaker 525.

[0087] During the operation of the energy storage auxiliary power supply system, the first heat dissipation component and the second heat dissipation component work in coordination and the cooling load is reasonably distributed, which can accelerate the heat dissipation of electrical components such as the transformer, molded case circuit breaker, switching power supply and second circuit breaker in the energy storage auxiliary power supply system. The heat dissipation effect is good, and the temperature of electrical components such as the transformer, molded case circuit breaker, switching power supply, second circuit breaker, third circuit breaker and fourth circuit breaker can be efficiently and accurately controlled within a predetermined range, thereby extending the service life of electrical components such as the transformer, molded case circuit breaker, switching power supply, second circuit breaker, third circuit breaker and fourth circuit breaker, so as to ensure the safe and stable operation of the components and improve the stability of the system.

[0088] Optionally, the fire control unit 524, meter 526, local controller 527, lighting 528, and switch 529 in the energy storage auxiliary power supply system can also serve as components to be cooled by the cooling system 10. The cooling system 10 can be equipped with corresponding heat sinks (e.g., fans) for the fire control unit 524, meter 526, local controller, lighting, and switch. The cooling air provided by the second heat dissipation component in the cooling system 10 can also cover the fire control unit 524, meter 526, local controller, lighting, and switch. In this way, during operation in the auxiliary power supply cabinet, the first and second heat dissipation components work together to rationally distribute the cooling load, accelerate cooling of the various electrical components in the auxiliary power supply cabinet, achieve effective cooling, and thereby extend the service life of each electrical component, ensuring safe and stable operation of the components and improving system stability.

[0089] like Figure 7 As shown, an embodiment of the present application further provides an energy storage system, comprising a battery cluster 601, an energy storage converter 602, and the aforementioned energy storage auxiliary power supply system. Energy storage converter 602 is connected to battery cluster 601. Battery cluster 601 includes at least one energy storage battery, which can be connected to a first power supply circuit provided in auxiliary power supply cabinet 1.

[0090] Optionally, the energy storage system also includes a battery cabinet, in which the battery cluster 601 and energy storage converter 602 are housed. The battery cluster includes at least one energy storage battery. Exemplarily, the battery cluster 601 is electrically connected to the power conversion system (PCS) 602 via a conversion circuit (e.g., a DC-DC converter 603). Several energy storage converters 602 are installed in the energy storage converter cabinet, and several battery clusters 601 and the conversion circuit are installed in the battery cabinet.

[0091] Optionally, the energy storage system may also include a battery management system (BMS), an energy management system (EMS), a fire protection system, and other parts.

[0092] In this embodiment, the energy storage battery in the energy storage system can serve as the power supply for the first power supply circuit in the heat dissipation system. At the same time, the energy storage system includes the heat dissipation system in any of the aforementioned embodiments, which can dissipate heat for the components to be dissipated in the corresponding area. Through the coordinated operation of the radiators of the first heat dissipation assembly and the second heat dissipation assembly, the cooling load is reasonably distributed, the heat dissipation of the components to be dissipated can be accelerated, the heat dissipation effect is good, and the temperature of each component to be dissipated can be efficiently and accurately controlled within a predetermined range, thereby extending the service life of the components to be dissipated and improving the stability of the energy storage system.

[0093] In the description of this specification, reference to the terms "some embodiments" or "other embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0094] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A heat dissipation system, characterized in that: Set in the auxiliary power supply cabinet of the energy storage system; the heat dissipation system includes: A temperature acquisition component, comprising a plurality of temperature sensors, wherein the plurality of temperature sensors are used to respectively acquire the temperatures of the areas where the plurality of heat dissipation devices in the auxiliary power supply cabinet are located; A first heat dissipation component includes a plurality of heat sinks, which are arranged in the auxiliary power supply cabinet, and the plurality of heat sinks are respectively arranged in corresponding areas where the plurality of components to be cooled are located; A second heat dissipation component is provided in the auxiliary power supply cabinet, and the cold air provided by the second heat dissipation component covers the multiple components to be cooled; A controller is connected to the temperature acquisition component, the first heat dissipation component, and the second heat dissipation component respectively; the controller is used to control the first target radiator to start working and control the second heat dissipation component to work in a cooling mode when the temperature collected by any of the temperature sensors is higher than a preset threshold; wherein the first target radiator is a radiator in an area where the temperature is higher than the preset threshold.

2. The heat dissipation system according to claim 1, characterized in that: The heat dissipation system further comprises: A first power supply circuit is connected to the energy storage battery, the first heat dissipation component, and the second heat dissipation component respectively; a second power supply circuit connected to the AC mains, the first heat dissipation component, and the second heat dissipation component respectively; The first power supply circuit and the second power supply circuit work in a time-sharing manner to supply power to the first heat dissipation component and the second heat dissipation component.

3. The heat dissipation system according to claim 2, characterized in that: The first power supply circuit includes: a first conversion unit, connected to the energy storage battery, the first heat dissipation component, and the second heat dissipation component, respectively, for converting a direct current signal into an alternating current signal; The first switch is provided on the power supply path where the first conversion unit is located, and is used for selectively switching on or off the power supply path where the first conversion unit is located.

4. The heat dissipation system according to claim 3, characterized in that: The first conversion unit includes: a first converter, connected to the energy storage battery, for converting a DC signal into an AC signal; The second converter is connected to the first converter, the first heat dissipation component, and the second heat dissipation component respectively, and is used to support voltage conversion of the AC signal.

5. The heat dissipation system according to claim 4, characterized in that: The second power supply circuit includes: a third converter, connected to the AC mains, the first heat dissipation component, and the second heat dissipation component, respectively, and configured to support voltage conversion of the AC power signal; The second switch is provided on the power supply path where the third converter is located, and is used for selectively switching on or off the power supply path between the third converter and the AC mains.

6. The heat dissipation system according to claim 5, characterized in that: The second converter and the third converter are the same converter.

7. An energy storage auxiliary power supply system, characterized in that: include: an auxiliary power supply circuit, provided in an auxiliary power supply cabinet of the energy storage auxiliary power supply system, comprising an auxiliary power supply, a first circuit breaker and a transformer, wherein the first circuit breaker is provided on a power supply path between the auxiliary power supply and the transformer; and The heat dissipation system according to any one of claims 1 to 6 is arranged in the auxiliary power supply cabinet; wherein the multiple heat dissipation devices in the heat dissipation system include at least the first circuit breaker and the transformer.

8. The energy storage auxiliary power supply system according to claim 7, characterized in that: The energy storage auxiliary power supply system further includes: a second circuit breaker and a switching power supply, wherein the first end of the second circuit breaker is connected to the transformer, the second end of the second circuit breaker is connected to the first end of the switching power supply, and the second end of the switching power supply is used to connect to the power supply device; wherein, The second circuit breaker and the switching power supply are respectively the components to be cooled.

9. The energy storage auxiliary power supply system according to claim 7, characterized in that: The energy storage auxiliary power supply system also includes: a third circuit breaker, a fire host, a fourth circuit breaker and a meter; wherein, A first end of the third circuit breaker is connected to the transformer, and a second end of the third circuit breaker is connected to the fire host; A first end of the fourth circuit breaker is connected to the transformer, and a second end of the fourth circuit breaker is connected to the electric meter; Wherein, the third circuit breaker and the fourth circuit breaker are respectively the heat dissipation components.

10. An energy storage system, characterized in that: include: A battery cluster comprising at least one energy storage battery; an energy storage converter connected to the battery cluster; as well as The energy storage-assisted power supply system according to any one of claims 7 to 9, wherein the first power supply circuit in the energy storage-assisted power supply system is connected to the energy storage battery.

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