Energy storage high-voltage box and energy storage system

Abstract

Provided in the present application are an energy storage high-voltage box and an energy storage system. The energy storage high-voltage box comprises a box body, a heat-generating component group, a heat sink assembly and a flow-disturbing member, wherein the box body has an installation cavity formed therein; the heat-generating component group is disposed in the installation cavity; the heat sink assembly is embedded in a wall surface of the box body, and comprises a heat absorption portion and a heat dissipation portion which are connected to each other, the heat absorption portion being located inside the installation cavity, and the heat dissipation portion being located outside the installation cavity; and the flow-disturbing member is disposed in the installation cavity, and is configured to drive the flow of gas in the installation cavity.

Description

High-voltage energy storage box and energy storage system

[0001] This application claims priority to Chinese Patent Application No. 202422698220.8, filed with the Chinese Patent Office on November 5, 2024; the entire contents of the above application are incorporated herein by reference. Technical Field

[0002] This application relates to the field of energy storage equipment technology, and in particular to energy storage high-voltage boxes and energy storage systems. Background Technology

[0003] The high-voltage storage box is an important component of the energy storage system. It contains components that generate heat, such as fuses and copper busbars. Invention Overview

[0004] The high-voltage energy storage box in related technologies has the problem of high internal temperature.

[0005] In a first aspect, this application provides an energy storage high-voltage box, comprising:

[0006] The housing has an installation cavity.

[0007] A heating element assembly is disposed within the mounting cavity;

[0008] A heat dissipation component is embedded in the wall of the housing. The heat dissipation component includes a heat-absorbing part and a heat-dissipating part connected to each other. The heat-absorbing part is located inside the mounting cavity, and the heat-dissipating part is located outside the mounting cavity.

[0009] A flow deflector is disposed within the mounting cavity, and the flow deflector is configured to drive the gas flow within the mounting cavity.

[0010] Secondly, this application provides an energy storage system, including the aforementioned high-voltage energy storage box. Beneficial effects

[0011] The high-voltage energy storage box provided in this application, by placing the heat-absorbing part inside the mounting cavity and the heat-dissipating part outside the mounting cavity, allows heat inside the mounting cavity to be transferred to the heat-dissipating part through the heat-absorbing part and then directly dissipated to the external environment, thus accelerating the heat dissipation rate inside the mounting cavity. Simultaneously, the airflow within the mounting cavity is accelerated by the baffles, increasing the heat exchange rate between the heat inside the mounting cavity and the heat-absorbing part, allowing the heat inside the mounting cavity to be quickly transferred to the external environment, reducing the temperature of the box body. Furthermore, the airflow within the mounting cavity facilitated by the baffles improves temperature uniformity and prevents excessively high temperatures in localized areas. Attached Figure Description

[0012] Figure 1 is one of the structural schematic diagrams of the energy storage high-voltage box provided in the embodiments of this application;

[0013] Figure 2 is a second schematic diagram of the structure of the energy storage high-voltage box provided in the embodiment of this application;

[0014] Figure 3 is a schematic diagram of the structure of the heat dissipation component provided in an embodiment of this application;

[0015] Figure 4 is a partial structural schematic diagram of the energy storage high-voltage box provided in an embodiment of this application;

[0016] Figure 5 is a structural schematic diagram of the energy storage high-voltage box provided in an embodiment of this application, wherein the heat-conducting connecting plate is the side wall of the main body. Embodiments of the present invention

[0017] This application discloses an energy storage high-voltage box according to its embodiments. Referring to Figures 1, 2 and 3, the energy storage high-voltage box includes a box body 1, a heat-generating component group 2, a heat dissipation component 3 and a flow-dispersing component 4. The box body 1 forms a mounting cavity 11. The heat-generating component group 2 is disposed in the mounting cavity 11. The heat dissipation component 3 is embedded in the wall of the box body 1. The heat dissipation component 3 includes a heat-absorbing part 31 and a heat-dissipating part 32 connected to each other. The heat-absorbing part 31 is located inside the mounting cavity 11, and the heat dissipation part 32 is located outside the mounting cavity 11. The flow-dispersing component 4 is disposed inside the mounting cavity 11 and is configured to drive the gas flow inside the mounting cavity 11.

[0018] According to the embodiments of this application, the high-voltage energy storage box, by placing the heat-absorbing part 31 inside the mounting cavity 11 and the heat-dissipating part 32 outside the mounting cavity 11, allows heat inside the mounting cavity 11 to be transferred to the heat-dissipating part 32 through the heat-absorbing part 31 and then directly dissipated into the external environment, thus accelerating the heat dissipation rate inside the mounting cavity 11. Simultaneously, the airflow within the mounting cavity 11 is accelerated by the flow-dispersing element 4, increasing the heat exchange rate between the heat inside the mounting cavity 11 and the heat-absorbing part 31, allowing the heat inside the mounting cavity 11 to be quickly transferred to the external environment, thereby reducing the temperature of the box body 1. Furthermore, the airflow within the mounting cavity 11 driven by the flow-dispersing element 4 improves the temperature uniformity within the mounting cavity 11, preventing excessively high temperatures in certain areas.

[0019] In some examples, the spoiler 4 is, for example, a spoiler fan or an exhaust fan.

[0020] In some examples, the heat-generating component group 2 includes, for example, at least one of a current busbar, a shunt, a pre-charge resistor, a disconnect switch, and a fuse.

[0021] In some embodiments, referring to Figures 1 and 3, the heat-absorbing part 31 is formed with a first air duct 311, which communicates with the mounting cavity 11.

[0022] It is understandable that the gas in the mounting cavity 11 carries the heat emitted by the heating element group 2. By forming a first air duct 311 in the heat absorption part 31 that communicates with the mounting cavity 11, when the turbulence member 4 drives the gas in the mounting cavity 11 to flow, the gas in the mounting cavity 11 will flow into the first air duct 311, thereby allowing the gas carrying heat to enter the first air duct 311 and exchange heat with the heat absorption part 31, which improves the heat absorption speed of the heat absorption part 31 and accelerates the heat dissipation speed of the energy storage high-voltage box.

[0023] It is understandable that by forming a first air duct 311 in the heat absorption part 31, the contact area between the heat absorption part 31 and the gas in the mounting cavity 11 can be increased, that is, the heat exchange area of ​​the heat absorption part 31 can be increased, thereby accelerating the absorption rate of heat in the mounting cavity 11 by the heat absorption part 31 and realizing rapid heat dissipation of the energy storage high-voltage box.

[0024] In some embodiments, referring to Figures 2 and 3, the heat dissipation section 32 forms a second air duct 321, and the energy storage high-voltage box also includes a cooling fan 5, which is disposed at the heat dissipation section 32 and is configured to drive the air flow at the second air duct 321.

[0025] Understandably, the heat-absorbing part 31 transfers heat from the mounting cavity 11 to the heat-dissipating part 32. By installing a cooling fan 5 at the heat-dissipating part 32, the airflow in the second air duct 321 is accelerated, thereby speeding up the dissipation of heat from the heat-dissipating part 32 to the external environment. The faster the heat dissipation from the heat-dissipating part 32, the faster the heat exchange rate between the heat-dissipating part 32 and the heat-absorbing part 31, and consequently, the faster the heat dissipation rate of the energy storage high-voltage box.

[0026] It is understandable that by forming a second air duct 321 at the heat dissipation part 32, the contact area between the heat dissipation part 32 and the external environment can be increased, that is, the heat dissipation area of ​​the heat dissipation part 32 is increased. At the same time, in conjunction with the cooling fan 5, the heat dissipation speed of the heat dissipation part 32 can be accelerated.

[0027] In some embodiments, referring to FIG3, the heat-absorbing part 31 includes at least two heat-absorbing fins 312, the at least two heat-absorbing fins 312 are arranged side by side, and a first air duct 311 is formed between two adjacent heat-absorbing fins 312.

[0028] Understandably, each heat-absorbing fin 312 can exchange heat with the gas in the mounting cavity 11, ensuring the heat absorption rate of the heat-absorbing part 31. At the same time, a first air duct 311 is formed between two adjacent heat-absorbing fins 312, allowing the heat in the mounting cavity 11 to flow with the gas to the space between the two adjacent heat-absorbing fins 312, ensuring the heat absorption area of ​​the heat-absorbing fins 312 and improving the heat absorption rate of the heat-absorbing part 31.

[0029] In some examples, the heat-absorbing part 31 includes at least three heat-absorbing fins 312.

[0030] In some embodiments, referring to FIG3, the heat dissipation part 32 includes at least two heat dissipation fins 322, which are arranged side by side, and a second air duct 321 is formed between two adjacent heat dissipation fins 322.

[0031] Understandably, each heat dissipation fin 322 can exchange heat with the external environment, ensuring the heat dissipation speed of the heat dissipation section 32. Furthermore, each heat dissipation fin 322 can exchange heat with the heat absorption section 31, ensuring that the heat absorption section 31 can quickly transfer heat from the mounting cavity 11 to the heat dissipation section 32. Simultaneously, a second air duct 321 is formed between two adjacent heat dissipation fins 322, ensuring the contact area between the heat dissipation fins 322 and the external environment, thus improving the heat dissipation speed.

[0032] In some embodiments, referring to Figures 1 and 2, the energy storage high-voltage box further includes a cover plate 6, which is connected to the outer wall of the box body 1. An accommodating space is formed between the cover plate 6 and the outer wall of the box body 1, and the heat dissipation part 32 and the cooling fan 5 are both located in the accommodating space.

[0033] Understandably, the cover plate 6 covers the heat dissipation part 32 and the cooling fan 5, and the cover plate 6 can protect the heat dissipation part 32 and the cooling fan 5. At the same time, the cover plate 6 and the outer wall of the box 1 form an accommodating space, and the heat dissipation part 32 and the cooling fan 5 are placed in the accommodating space, so that the cooling fan 5 can quickly drive the air flow in the accommodating space, and thus quickly drive the air flow at the heat dissipation part 32.

[0034] Understandably, if the heat sink 32 and the cooling fan 5 are not covered by the cover plate 6, the cooling fan 5 will also drive the flow of air that is far away from the heat sink 32 when it is working, which will reduce the air flow speed at the heat sink 32 and is not conducive to the rapid heat dissipation of the heat sink 32.

[0035] In some examples, the cooling fan 5 is disposed adjacent to the heat dissipation part 32 within the receiving space, so that the cooling fan 5 can quickly drive the air flow at the heat dissipation part 32.

[0036] In some embodiments, referring to Figures 1 and 2, a third air duct 7 is formed between the heating element group 2 and the inner wall surface of the housing 1, and the third air duct 7 is connected to the first air duct 311.

[0037] Understandably, the baffle 4 can drive the gas in the mounting cavity 11 to flow along the third air duct 7. Since the third air duct 7 is adjacent to the heating element group 2, the gas will carry away the heat of the heating element group 2 when it flows in the third air duct 7. At the same time, since the third air duct 7 is connected to the first air duct 311, the gas carrying the heat of the heating element group 2 will flow to the first air duct 311 to achieve rapid heat exchange between the heat absorption part 31 and the heating element group 2.

[0038] In some examples, the third air duct 7 is arranged around the heat-generating component group 2, and the gas flowing along the third air duct 7 can dissipate heat from the heat-generating component group 2 in a comprehensive manner, thereby improving the heat dissipation speed of the heat-generating component group 2.

[0039] In some embodiments, referring to Figures 1 and 2, the heating element group 2 includes at least two heating elements 21, with a gap formed between two adjacent heating elements 21, and the gap is connected to the first air duct 311.

[0040] It is understandable that two adjacent heating elements 21 are spaced apart and have a gap. When the turbulence member 4 drives the gas in the mounting cavity 11 to flow, the gas will flow through the gap between the two adjacent heating elements 21, which will accelerate the heat dissipation speed of the heating element 21. This allows the gas to effectively carry the heat of the heating element 21 to the heat absorption part 31, thereby improving the heat dissipation speed of the energy storage high-voltage box.

[0041] At the same time, a gap is formed between two adjacent heating elements 21 to prevent the two adjacent heating elements 21 from contacting each other, which would make it difficult for the heat at the contact point to dissipate, and can prevent the temperature between the two adjacent heating elements 21 from becoming too high.

[0042] In some embodiments, referring to FIG3, the heat dissipation assembly 3 further includes a heat-conducting connecting plate 33, which connects the heat dissipation part 32 and the heat absorption part 31, and is embedded in the wall of the housing 1.

[0043] It is understood that the heat dissipation part 32 and the heat absorption part 31 are respectively located on both sides of the heat-conducting connecting plate 33, and the heat-conducting connecting plate 33 is embedded in the wall of the housing 1 so that the heat dissipation part 32 is located outside the mounting cavity 11, and the heat absorption part 31 is located inside the mounting cavity 11. The heat dissipation part 32 can transfer the heat in the mounting cavity 11 to the heat dissipation part 32 through the heat-conducting connecting plate 33, so that the heat dissipation component 3 can quickly dissipate heat from the housing 1.

[0044] Understandably, the heat inside the mounting cavity 11 can also be transferred to the external environment through the heat-conducting connection plate 33, which accelerates the heat dissipation of the enclosure 1.

[0045] In some embodiments, referring to Figures 3 and 4, the housing 1 includes a body 12, the body 12 having a connecting cavity 121, a heat-conducting connecting plate 33 being embedded in the connecting cavity 121, and the heat-conducting connecting plate 33 and the body 12 surrounding each other to form an installation cavity 11.

[0046] It is understandable that the heat-conducting connecting plate 33 is embedded in the connecting cavity 121, so that the heat-conducting connecting plate 33 and the body 12 can form an installation cavity 11. That is to say, the heat-conducting connecting plate 33 is not only a structural component of the heat dissipation component 3, but also a structural component of the box 1, realizing the reuse of the heat-conducting connecting plate 33, which is conducive to simplifying the structure of the energy storage high-voltage box.

[0047] For example, the thermally conductive connection plate 33 can be reused as one of the sidewalls of the body 12, or it can be part of one of the sidewalls.

[0048] In some embodiments, referring to FIG5, the body 12 includes a first side plate 122, a second side plate 123 and a third side plate 124 connected in sequence, and a heat-conducting connecting plate 33 is fixedly connected to the first side plate 122 and the third side plate 124 to form a sidewall of the body 12.

[0049] It is understandable that the heat-conducting connecting plate 33 is used as one of the side plates of the body 12. The heat-conducting connecting plate 33 is fixedly connected to the first side plate 122 and the third side plate 124, so that the heat-conducting connecting plate 33, the first side plate 122, the second side plate 123 and the third side plate 124 can be connected in sequence to form the side wall of the body 12. This allows the heat-conducting connecting plate 33 to be reused as a side plate of the body 12, which helps to simplify the structure of the body 12.

[0050] It is understood that the main body 12 also includes a top plate and a bottom plate. One end of the heat-conducting connecting plate 33, the first side plate 122, the second side plate 123 and the third side plate 124 are all connected to the top plate, and the other end of the heat-conducting connecting plate 33, the first side plate 122, the second side plate 123 and the third side plate 124 are all connected to the bottom plate.

[0051] In some embodiments, the heat-conducting connecting plate 33 and the body 12 are made of the same material, and the heat-conducting connecting plate 33 is fixedly connected to the body 12 by welding.

[0052] It is understandable that when the heat-conducting connecting plate 33 and the body 12 are made of the same material, the heat-conducting connecting plate 33 and the body 12 can be directly fixed together by welding, which improves the stability and sealing of the connection between the heat-conducting connecting plate 33 and the body 12.

[0053] In some embodiments, the heat-conducting connecting plate 33 and the body 12 are made of different materials, and the heat-conducting connecting plate 33 is fixedly connected to the body 12 by at least one of the following methods: snap-fit, threaded connection and interference fit.

[0054] It is understandable that when the heat-conducting connecting plate 33 and the body 12 are made of different materials, it is difficult to fix the body 12 and the heat-conducting connecting plate 33 together by welding. Therefore, in this embodiment, at least one of the following methods is used to fix the heat-conducting connecting plate 33 and the body 12 together: snap-fit, threaded connection, and interference fit.

[0055] In some examples, a seal is provided at the connection between the heat-conducting connecting plate 33 and the body 12. It is understood that the seal can effectively improve the sealing performance at the connection between the heat-conducting connecting plate 33 and the body 12, thereby preventing coolant from seeping into the mounting cavity 11.

[0056] An embodiment of this application also discloses an energy storage system, including the aforementioned high-voltage energy storage box.

[0057] According to the energy storage system of this application embodiment, by placing the heat-absorbing part 31 inside the mounting cavity 11 and the heat-dissipating part 32 outside the mounting cavity 11, the heat inside the mounting cavity 11 can be transferred to the heat-dissipating part 32 through the heat-absorbing part 31 and then directly dissipated to the external environment, thus accelerating the heat dissipation speed inside the mounting cavity 11. Simultaneously, the airflow within the mounting cavity 11 is accelerated by the flow-dispersing element 4, which promotes the heat exchange rate between the heat inside the mounting cavity 11 and the heat-absorbing part 31, allowing the heat inside the mounting cavity 11 to be quickly transferred to the external environment. Furthermore, the airflow within the mounting cavity 11 driven by the flow-dispersing element 4 improves the temperature uniformity within the mounting cavity 11, preventing excessively high temperatures in localized areas, thereby enhancing the safety of the energy storage system.

[0058] It should be noted that energy storage systems can be vehicles or energy storage charging stations. It is also important to note that the above are merely illustrative examples of energy storage systems and do not impose any specific limitations on them.

Claims

1. A high-voltage energy storage box, comprising: The housing has an installation cavity. A heating element assembly is disposed within the mounting cavity; A heat dissipation component is embedded in the wall of the housing. The heat dissipation component includes a heat-absorbing part and a heat-dissipating part connected to each other. The heat-absorbing part is located inside the mounting cavity, and the heat-dissipating part is located outside the mounting cavity. A flow deflector is disposed within the mounting cavity, and the flow deflector is configured to drive the gas flow within the mounting cavity.

2. The energy storage high-voltage box according to claim 1, wherein, The heat-absorbing part has a first air duct, which is connected to the mounting cavity.

3. The energy storage high-voltage box according to claim 1, wherein, The heat dissipation section forms a second air duct, and the energy storage high-voltage box also includes a cooling fan. The cooling fan is located at the heat dissipation section and is configured to drive the air flow in the second air duct.

4. The energy storage high-voltage box according to claim 2, wherein, The heat-absorbing part includes at least two heat-absorbing fins, which are arranged side by side, and a first air duct is formed between two adjacent heat-absorbing fins.

5. The energy storage high-voltage box according to claim 3, wherein, The heat dissipation section includes at least two heat dissipation fins, which are arranged side by side, and a second air duct is formed between two adjacent heat dissipation fins.

6. The energy storage high-voltage box according to claim 3, wherein, The energy storage high-voltage box also includes a cover plate, which is connected to the outer wall of the box body. An accommodating space is formed between the cover plate and the outer wall of the box body, and the heat dissipation part and the cooling fan are both located within the accommodating space.

7. The energy storage high-voltage box according to claim 2, wherein, A third air duct is formed between the heating element group and the inner wall of the housing, and the third air duct is connected to the first air duct.

8. The energy storage high-voltage box according to claim 2, wherein, The heating element group includes at least two heating elements, with a gap formed between two adjacent heating elements, and the gap is connected to the first air duct.

9. The energy storage high-voltage box according to any one of claims 1 to 8, wherein, The heat dissipation assembly also includes a heat-conducting connecting plate, which connects the heat dissipation part and the heat absorption part, and is embedded in the wall of the housing.

10. The energy storage high-voltage box according to claim 9, wherein, The housing includes a body, the body having a connecting cavity, a heat-conducting connecting plate being embedded in the connecting cavity, and the heat-conducting connecting plate and the body surrounding the mounting cavity.

11. The energy storage high-voltage box according to claim 10, wherein, The body includes a first side plate, a second side plate, and a third side plate connected in sequence. The heat-conducting connecting plate is fixedly connected to the first side plate and the third side plate to form the side wall of the body.

12. The energy storage high-voltage box according to claim 10, wherein, The heat-conducting connecting plate and the main body are made of the same material, and the heat-conducting connecting plate is fixedly connected to the main body by welding.

13. The energy storage high-voltage box according to claim 10, wherein, The heat-conducting connecting plate is made of a different material from the body, and the heat-conducting connecting plate is fixedly connected to the body by at least one of the following methods: snap-fit, threaded connection, and interference fit.

14. An energy storage system comprising an energy storage high-voltage box as described in any one of claims 1 to 13.

Images