High-voltage box of energy storage system and energy storage system

Abstract

The embodiment of the utility model provides an energy storage system high-voltage box and an energy storage system, and the energy storage system high-voltage box comprises a first electronic component and a second electronic component, the first electronic component and the second electronic component are connected through a first connecting piece, and the first connecting piece is provided with a first heat dissipation fin. According to the high-voltage box of the energy storage system provided by the embodiment of the invention, the heat dissipation efficiency can be improved by arranging the first heat dissipation fins, so that heat generated by the first electronic component and the second electronic component can be quickly dissipated, for example, heat generated by the first relay and the first fuse can be quickly dissipated, and the local temperature of the first relay and the first fuse can be prevented from being too high; the internal temperature of the high-voltage box of the energy storage system is balanced, so that the aging of internal components is slowed down, and the service life of the components is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of energy storage, and particularly relates to a high-voltage box for an energy storage system and an energy storage system. Background Art

[0002] The high-voltage box is a core device in the energy storage system, and its role is very important. The high-voltage box can realize functions such as charge and discharge control, protection, and monitoring of the energy storage system.

[0003] Since there are components in the high-voltage box that generate more heat, when the high-voltage box operates for a long time, the temperature inside the high-voltage box is likely to be too high, which accelerates the aging of the components inside the high-voltage box and shortens the service life of the components. Utility Model Content

[0004] The embodiments of this application provide a high-voltage box for an energy storage system and an energy storage system, which can balance the temperature inside the high-voltage box of the energy storage system, thereby slowing down the aging of the internal components and extending the service life of the components.

[0005] The embodiments of this application provide a high-voltage box for an energy storage system, including:

[0006] A first electronic component and a second electronic component, the first electronic component and the second electronic component are connected by a first connecting piece, and first heat dissipation fins are arranged on the first connecting piece.

[0007] The embodiments of this application also provide an energy storage system, including the high-voltage box for an energy storage system according to any embodiment of this application.

[0008] The high-voltage box for an energy storage system provided by the embodiments of this application can improve the heat dissipation efficiency by arranging the first heat dissipation fins, so that the heat generated by the first electronic component and the second electronic component dissipates quickly. For example, the heat generated by the first relay and the first fuse dissipates quickly, avoiding the local temperature of the first relay and the first fuse from being too high, balancing the temperature inside the high-voltage box of the energy storage system, thereby slowing down the aging of the internal components and extending the service life of the components. Brief Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 Structural schematic of the high-voltage box for an energy storage system provided by the embodiments of this application Figure two

[0011] Figure 2Schematic diagram of the internal layout of the high-voltage box of the energy storage system provided by the embodiment of the present application.

[0012] Description of the reference numerals:

[0013] High-voltage box 100 of the energy storage system; box body 11; box cover 12;

[0014] Battery management system 21; first relay 22; first fuse 23; first copper bar 24; first heat sink fin 25; second relay 26; second fuse 27; second copper bar 28; second heat sink fin 29;

[0015] Fan 31; first temperature sensor 32; second temperature sensor 33; disconnector 34; AC-DC switching power supply 35; balancing relay 36; pre-charge resistor 37;

[0016] First DC power output port 41; second DC power output port 42; first AC power input port 43, second AC power input port 44. Specific implementation mode

[0017] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0018] The embodiment of the present application provides a high-voltage box of an energy storage system. The high-voltage box of the energy storage system can be electrically connected to an external battery, and is used to control the charging and discharging processes of the battery, protect the battery from faults such as overcharging, over-discharging, and short circuits, and monitor various performance parameters of the battery.

[0019] The high-voltage box of the energy storage system in the embodiment of the present application includes a plurality of electronic components, for example, including a first electronic component and a second electronic component. Among them, the first electronic component and the second electronic component are connected by a first connecting piece. A first heat sink fin is provided on the first connecting piece.

[0020] In practical applications, during the development stage of the high-voltage box of the energy storage system, the heat generation conditions of each electronic component can be measured. Among them, at least one of the first electronic component and the second electronic component is the component with the largest heat generation in the high-voltage box of the energy storage system, such as a relay, a fuse, etc. The heat generated by the first electronic component and the second electronic component can be conducted to the first connecting piece. By providing the first heat sink fin, the heat dissipation efficiency of the first electronic component and the second electronic component can be improved.

[0021] In some embodiments, the high-voltage box of the energy storage system further includes a first temperature sensor. The first temperature sensor is disposed near the component with the largest heat generation among the first electronic component and the second electronic component. The first temperature sensor can detect the temperature of the location in real time.

[0022] In some embodiments, the high-voltage box of the energy storage system further includes a third electronic component and a fourth electronic component. Among them, the third electronic component and the fourth electronic component are connected through a second connecting piece. The second connecting piece is provided with second heat dissipation fins.

[0023] In practical applications, at least one of the third electronic component and the fourth electronic component is a component with a large heat generation in the high-voltage box of the energy storage system, such as a relay, a fuse, etc. The heat dissipated by the third electronic component and the fourth electronic component can be conducted to the second connecting piece. By providing the second heat dissipation fins, the heat dissipation efficiency of the third electronic component and the fourth electronic component can be improved.

[0024] In some embodiments, the high-voltage box of the energy storage system further includes a second temperature sensor. The second temperature sensor is disposed near the component with the largest heat generation among the third electronic component and the fourth electronic component. The second temperature sensor can detect the temperature of the location in real time.

[0025] Hereinafter, taking the first electronic component as the first relay, the second electronic component as the first fuse, the first connecting piece as the first copper bar, the third electronic component as the second relay, the fourth electronic component as the second fuse, and the second connecting piece as the second copper bar, the structure and technical effects of the high-voltage box of the energy storage system in the embodiments of the present application will be described in detail.

[0026] Refer to Figure 1 , Figure 1 which is a schematic structural diagram of the high-voltage box 100 of the energy storage system provided by the embodiments of the present application.

[0027] The high-voltage box 100 of the energy storage system includes a box body 11 and a box cover 12. The box cover 12 covers the box body 11, and the box body 11 and the box cover 12 together form an accommodation space. The accommodation space can be used to set various electronic components. In practical applications, operation switches such as knobs or buttons can be provided on the outer side of the box body 11 for users to operate. In addition, various interfaces such as a charging interface and a discharging interface can also be provided on the outer side of the box body 11 to implement functions such as charge and discharge management of the high-voltage box 100 of the energy storage system.

[0028] In some embodiments, the high-voltage box 100 of the energy storage system further includes a sealing gasket. The sealing gasket is disposed between the box cover 12 and the box body 11 to achieve the seal between the box cover 12 and the box body 11. In practical applications, by using a suitable sealing gasket, the high-voltage box 100 of the energy storage system can meet the IP65 protection level.

[0029] Reference Figure 2 , Figure 2 is a schematic diagram of the internal layout of the high-voltage box 100 of the energy storage system provided by the embodiment of the present application.

[0030] The high-voltage box 100 of the energy storage system includes a battery management system 21, a first relay 22, a first fuse 23, a first copper bar 24, and a first heat sink fin 25. Among them, the battery management system 21, the first relay 22, the first fuse 23, the first copper bar 24, and the first heat sink fin 25 are all arranged in the above-mentioned accommodation space.

[0031] The battery management system (Battery-Management System, abbreviated as BMS) 21 can be electrically connected to an external battery and is used for managing the battery, such as control, protection, monitoring, etc.

[0032] The first relay 22 is electrically connected to the battery management system 21. The first fuse 23 is electrically connected to the first relay 22 through the first copper bar 24. The first fuse 23 is also electrically connected to the first DC power output port (such as the B+ port) 41, and can also be electrically connected through a copper bar, where the first DC power output port 41 can be arranged on the box body 11. The first heat sink fin 25 is arranged on the first copper bar 24.

[0033] In practical applications, the first relay 22 and the first fuse 23 are components that generate relatively more heat inside the high-voltage box 100 of the energy storage system. Since the copper bar has good thermal conductivity, the heat generated by the first relay 22 and the first fuse 23 can be conducted to the first copper bar 24 and dissipated through the first copper bar 24. In this case, setting the first heat sink fin 25 on the first copper bar 24 can greatly improve the heat dissipation efficiency, quickly dissipate the heat generated by the first relay 22 and the first fuse 23, avoid the local temperature of the first relay 22 and the first fuse 23 from being too high, make the internal temperature of the high-voltage box 100 of the energy storage system balanced, thereby slowing down the aging of internal components and extending the service life of the components.

[0034] In some embodiments, the high-voltage box 100 of the energy storage system further includes a fan 31, and the fan 31 can be an axial flow fan. The fan 31 can be installed on a bracket inside the box body 11, and the installation is simple and the process cost is low. Among them, the air outlet of the fan 31 faces the first heat sink fin 25. It can be understood that when the fan 31 works, the fan 31 can blow air towards the first heat sink fin 25, further improving the heat dissipation efficiency of the first heat sink fin 25 through air cooling, quickly dissipating the heat generated by the first relay 22 and the first fuse 23, and being able to form a circulation inside the high-voltage box 100 of the energy storage system, enhancing the internal air convection, and being able to better maintain the internal temperature balance of the high-voltage box 100 of the energy storage system.

[0035] In some embodiments, the fan 31 is electrically connected to the battery management system 21, and the battery management system 21 is used to control the turning on and off of the fan 31, so as to achieve intelligent control of the heat dissipation effect.

[0036] For example, in one implementation, the turning on and off of the fan 31 can be controlled according to the temperature. Among them, when it is detected that the temperature near the first relay 22 and the first fuse 23 reaches the first preset temperature (for example, 35 °C), the battery management system 21 can control the fan 31 to turn on to enhance the heat dissipation effect; after the fan 31 is turned on, when it is detected that the temperature near the first relay 22 and the first fuse 23 drops to the second preset temperature (for example, 20 °C), the fan 31 is controlled to turn off to save electric energy. It can be understood that in practical applications, the above control actions based on temperature can be cycled to achieve intelligent control of the fan 31.

[0037] For another example, in another implementation, the turning on and off of the fan 31 can be controlled according to the working duration. Among them, after the first relay 22 and the first fuse 23 have been working continuously for the first duration (for example, 30 minutes), the battery management system 21 can control the fan 31 to turn on to enhance the heat dissipation effect; after the fan 31 is turned on and has been working continuously for the second duration (for example, 20 minutes), the fan 31 is controlled to turn off to save electric energy. It can be understood that in practical applications, the above control actions based on the working duration can be cycled to achieve intelligent control of the fan 31.

[0038] In some embodiments, the energy storage system high-voltage box 100 further includes a first temperature sensor 32. In one implementation, the first temperature sensor 32 is a negative temperature coefficient thermistor (Negative Temperature-Coefficient-Thermistor, abbreviated as NTC).

[0039] Among them, the first temperature sensor 32 is electrically connected to the battery management system 21. The first temperature sensor 32 is arranged near the first relay 22 and the first fuse 23, so it can collect the temperature near the first relay 22 and the first fuse 23. The first temperature sensor 32 can upload the collected temperature data to the battery management system 21 for the battery management system 21 to achieve control of turning on and off the fan 31.

[0040] In some embodiments, the energy storage system high-voltage box 100 further includes a second relay 26, a second fuse 27, a second copper bar 28, and a second heat sink fin 29. Among them, the second relay 26, the second fuse 27, the second copper bar 28, and the second heat sink fin 29 are all arranged in the above-mentioned accommodation space.

[0041] The second relay 26 is electrically connected to the battery management system 21. The second fuse 27 is electrically connected to the second relay 26 through the second copper bar 28. The second fuse 27 is also electrically connected to the second DC power output port (such as the B- port) 42, for example, it can also be electrically connected through a copper bar, where the second DC power output port 42 can be arranged on the box body 11. The second heat sink fin 29 is arranged on the second copper bar 28.

[0042] In practical applications, the second relay 26 and the second fuse 27 are also components that generate relatively more heat inside the high-voltage box 100 of the energy storage system. The heat generated by the second relay 26 and the second fuse 27 can be conducted to the second copper bar 28 and dissipated through the second copper bar 28. In this case, arranging the second heat sink fin 29 on the second copper bar 28 can greatly improve the heat dissipation efficiency, quickly dissipate the heat generated by the second relay 26 and the second fuse 27, avoid the local temperature of the second relay 26 and the second fuse 27 from being too high, and can also balance the temperature inside the high-voltage box 100 of the energy storage system, thereby slowing down the aging of internal components and extending the service life of the components.

[0043] In some embodiments, the fan 31, the first heat sink fin 25, and the second heat sink fin 29 are arranged substantially in a straight line, and the second heat sink fin 29 is located on the blowing path of the fan 31. Therefore, when the fan 31 blows towards the first heat sink fin 25, it also blows towards the second heat sink fin 29, and can further improve the heat dissipation efficiency of the second heat sink fin 29 through air cooling.

[0044] In some embodiments, the high-voltage box 100 of the energy storage system further includes a second temperature sensor 33. In one implementation manner, the second temperature sensor 33 can also be a negative temperature coefficient thermistor (NTC).

[0045] Wherein, the second temperature sensor 33 is electrically connected to the battery management system 21. The second temperature sensor 33 is arranged near the second relay 26 and the second fuse 27, so it can collect the temperature near the second relay 26 and the second fuse 27. The second temperature sensor 33 can upload the collected temperature data to the battery management system 21. The battery management system 21 can also control the turning on and off of the fan 31 according to the temperature data uploaded by the second temperature sensor 33. For example, when the temperature reaches the first preset temperature (such as 35 °C), it controls the fan 31 to turn on, and when the temperature drops to the second preset temperature (such as 20 °C), it controls the fan 31 to turn off.

[0046] In some embodiments, the high-voltage box 100 of the energy storage system further includes a disconnect switch 34, an AC-DC switching power supply 35, a balancing relay 36, and a pre-charge resistor 37. Among them, the disconnect switch 34, the AC-DC switching power supply 35, the balancing relay 36, and the pre-charge resistor 37 are all arranged in the above-mentioned accommodation space.

[0047] The output terminal of the disconnect switch 34 is electrically connected to the first relay 22 and the second relay 26, and can also be electrically connected through a copper bar, for example. The input terminal of the disconnect switch 34 is electrically connected to the first AC power input port (such as the P+ port) 43 and the second AC power input port (such as the P- port) 44, and can also be electrically connected through a copper bar, for example. Among them, the first AC power input port 43 and the second AC power input port 44 can be arranged on the box body 11.

[0048] The AC-DC switching power supply 35 is electrically connected to the battery management system 21. The AC-DC switching power supply 35 can be used to supply power to the battery management system 21.

[0049] The balancing relay 36 is electrically connected to the battery management system 21, and can be electrically connected through a line, for example. The pre-charge resistor 37 is electrically connected to the balancing relay 36, and can be electrically connected through a line, for example.

[0050] The embodiment of the present application also provides an energy storage system, which includes the above-mentioned high-voltage box 100 of the energy storage system. The energy storage system of the embodiment of the present application can balance the internal temperature of the high-voltage box 100 of the energy storage system, thereby slowing down the aging of internal components and extending the service life of the components.

[0051] In the description of the present application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0052] It should be noted that "electrically connected" in the embodiment of the present application can be a direct connection between two electrical components to achieve electrical connection, or an indirect connection to achieve electrical connection. For example, when A is electrically connected to B, it can be achieved by directly connecting A and B, or by indirectly connecting A and B through one or more other electrical components.

[0053] The high-voltage box of the energy storage system and the energy storage system provided by the embodiment of the present application are introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A high-voltage box for an energy storage system, characterized in that: include: A first electronic component and a second electronic component, wherein the first electronic component and the second electronic component are connected via a first connecting sheet, and a first heat dissipation fin is disposed on the first connecting sheet.

2. The high-voltage box of the energy storage system according to claim 1, characterized in that: Also includes: A fan, wherein an air outlet of the fan faces the first heat dissipation fins.

3. The high-voltage box of the energy storage system according to claim 2, characterized in that: Also includes: Battery management system; The fan is electrically connected to the battery management system, and the battery management system is used to control the opening and closing of the fan.

4. The high-voltage box of the energy storage system according to claim 3, characterized in that: At least one of the first electronic component and the second electronic component is a component with the highest heat generation in the high-voltage box of the energy storage system.

5. The high-voltage box of the energy storage system according to claim 4, characterized in that: Also includes: The first temperature sensor is electrically connected to the battery management system, and the first temperature sensor is arranged near the component with the largest heat generation among the first electronic component and the second electronic component.

6. The high-voltage box of the energy storage system according to any one of claims 1 to 5, characterized in that: The first electronic component is a first relay, the second electronic component is a first fuse, and the first connecting piece is a first copper busbar.

7. The high-voltage box of the energy storage system according to any one of claims 1 to 5, characterized in that: Also includes: A third electronic component and a fourth electronic component, wherein the third electronic component and the fourth electronic component are connected via a second connecting piece, and a second heat dissipation fin is disposed on the second connecting piece.

8. The high-voltage box of the energy storage system according to claim 7, characterized in that: At least one of the third electronic component and the fourth electronic component is a component with high heat generation in the high-voltage box of the energy storage system.

9. The high-voltage box of the energy storage system according to claim 8, characterized in that: Also includes: The second temperature sensor is arranged near the component with the highest heat generation among the third electronic component and the fourth electronic component.

10. The high-voltage box of the energy storage system according to claim 7, characterized in that: The third electronic component is a second relay, the fourth electronic component is a second fuse, and the second connecting piece is a second copper busbar.

11. The high-voltage box of the energy storage system according to any one of claims 1 to 5, characterized in that: Also includes: Box; A box cover, which is arranged on the box body, and the box body and the box cover together form a storage space, and the first electronic component and the second electronic component are both arranged in the storage space; A sealing rubber pad is arranged between the box cover and the box body.

12. An energy storage system, characterized in that: A high-voltage box for an energy storage system comprising any one of claims 1 to 11.

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