A domestic solid state battery energy storage system

Abstract

This invention discloses a household solid-state battery energy storage system, relating to the field of battery heat dissipation technology. It includes a battery module, a cooling module, and a housing cavity for supporting the battery module. The cooling module includes a vortex tube and an adjustment mechanism. The vortex tube has a cold air end and an air inlet end for connecting to the outlet of a compressed air pump. This invention uses a vortex tube as the core cooling component. Only compressed air needs to be connected to separate cold and hot air streams through the vortex effect, directly utilizing the cold air to dissipate heat from the battery module. This avoids the use of traditional refrigerants such as Freon, fundamentally solving the problems of periodic maintenance, increased costs, and environmental pollution caused by medium consumption and leakage. No refrigerant needs to be added or replaced during its service life, significantly reducing maintenance costs. Simultaneously, using clean compressed air as the cooling medium effectively prevents dust accumulation on the surface of the battery module, helping to maintain the cleanliness of the system and extend battery life.

Description

Technical Field

[0001] This invention relates to the field of battery heat dissipation technology, specifically to a household solid-state battery energy storage system. Background Technology

[0002] As a novel energy storage technology, solid-state batteries typically require strict control of their optimal operating temperature range between 60°C and 85°C. If the operating temperature is too low, the ionic conductivity of the solid electrolyte will decrease significantly. In some systems, the conductivity at low temperatures can even drop to less than 20% of that at room temperature, leading to a sharp increase in battery internal resistance, severe deterioration of charge and discharge performance, and easy precipitation of lithium metal anode dendrites during charging, posing safety hazards. If the operating temperature is consistently above 85°C, although solid-state batteries have better heat resistance than traditional liquid batteries, it will still accelerate side reactions and material decomposition at the electrode-electrolyte interface, resulting in faster capacity decay and shorter cycle life. There is also a risk of thermal runaway at extreme high temperatures. Therefore, maintaining the battery within a suitable temperature range is crucial for fully leveraging the advantages of high power, long life, and high safety of solid-state batteries.

[0003] Currently, most battery cooling methods commonly used in home energy storage systems rely on refrigerant circulation systems. For example, refrigerants such as Freon are used to generate cool air through compression, condensation, and evaporation to achieve active cooling of the battery. However, such refrigerants are consumables and require regular inspection, replenishment, or replacement. This not only increases the maintenance cost and complexity of the system but may also have adverse environmental impacts due to leakage. In addition, the energy efficiency ratio of refrigerant systems is greatly affected by ambient temperature, and performance degradation may occur during long-term operation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a household solid-state battery energy storage system. This system solves the problem that existing cooling methods require a cooling medium, which is a consumable that needs to be regularly inspected, replenished, or replaced. This not only increases the maintenance cost and complexity of the system but may also have adverse environmental impacts due to leakage, and may lead to performance degradation during long-term operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a household solid-state battery energy storage system, comprising a battery assembly, a cooling assembly, and a housing cavity for supporting the battery assembly; The cooling assembly includes a vortex tube and an adjustment mechanism. The vortex tube is provided with a cold air end and an air inlet end for communicating with the air outlet end of a compressed air pump. The cold air end of the vortex tube is connected to the receiving cavity and is used to deliver cold air to the battery assembly for heat exchange. The adjustment mechanism is used to adjust the outlet temperature of the cold air end. It also includes an overflow port that communicates with the outside, the overflow port being located on the inner wall of the receiving cavity.

[0006] In some embodiments, the vortex tube includes a tube body, one end of which is provided with a cold air port. The tube body is provided with a plurality of air inlets along the circumferential axis for communicating with the air outlet of the compressed air pump. The adjustment mechanism is provided at the end of the tube body away from the cold air port for adjusting the outlet temperature of the cold air port.

[0007] In some embodiments, the pipe body is provided with an annular box for unified air intake, and the annular box is connected to the air outlet of the compressed air pump.

[0008] In some embodiments, the axial direction of the air inlet is tangent to the circumference of the inner cavity of the pipe, so that the air intake airflow enters the pipe tangentially along the pipe wall. The air inlet is a circular hole structure or a conical hole structure with the hole diameter gradually increasing from the inner cavity of the pipe to the outer wall of the pipe.

[0009] In some embodiments, the adjustment assembly includes an extension tube and a plug. The extension tube is sleeved on the tube body, and the plug is disposed on the end of the extension tube away from the tube body. The plug has heat dissipation holes in the same direction as the length of the extension tube. It also includes a driving component, wherein the extension tube is disposed at the driving end of the driving component and is used for reciprocating movement along a first direction under drive.

[0010] In some embodiments, the diameter of the end of the plug near the extension tube is smaller than the diameter of the other end, and the smaller diameter is oriented towards the extension tube.

[0011] In some embodiments, a shunt tube is further included, which is used to connect the battery assembly and the cooling end of the vortex tube. The shunt tube is provided with a first valve body, the battery assembly is provided with a first temperature sensor for detecting its own temperature, and the receiving cavity is provided with a second temperature sensor for detecting the temperature inside the cavity.

[0012] In some embodiments, the battery assembly includes a battery body and a battery case for carrying the battery body. The battery case is disposed within a receiving cavity and has a through hole communicating with the receiving cavity. The first temperature sensor is disposed within the battery case, and the battery case is connected to an overflow port.

[0013] In some embodiments, a heat sink is further included, which is disposed on the pipe body to collect the hot air discharged from the heat dissipation holes, and the heat sink is provided with a hot air outlet for discharging the hot air.

[0014] In some embodiments, a switching component is further included, wherein both the hot air inlet and the cold air inlet are connected to the switching component, and the switching component is connected to the receiving cavity.

[0015] Beneficial effects This invention provides a home-use solid-state battery energy storage system. It employs a vortex tube as the core cooling component, requiring only compressed air input to separate cold and hot airflows through the vortex effect. The cold air directly dissipates heat from the battery components, avoiding the use of traditional refrigerants such as Freon. This fundamentally solves the problems of periodic maintenance, increased costs, and environmental pollution caused by medium consumption and leakage. No refrigerant needs to be added or replaced during the system's lifespan, significantly reducing maintenance costs. Simultaneously, using clean compressed air as the cooling medium effectively prevents dust accumulation on the battery component surface, helping to maintain system cleanliness and extend battery life. The outlet temperature of the cold air can be flexibly adjusted via an adjustment mechanism, enabling precise control of the battery component's heat dissipation intensity and ensuring the battery always operates within its optimal temperature range. The system has a simple structure, without complex condensation and evaporation circulation components, resulting in high reliability. The housing cavity has an overflow port connected to the outside, which, together with the cold air delivered by the vortex tube, forms a continuous and smooth airflow circulation path, ensuring that the cold air is fully discharged after heat exchange with the battery components, preventing heat accumulation and improving overall heat dissipation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a household solid-state battery energy storage system according to the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of a household solid-state battery energy storage system according to the present invention.

[0018] Figure 3 This is a schematic diagram of the eddy current tube structure of a household solid-state battery energy storage system according to the present invention.

[0019] Figure 4 This is a rear view schematic diagram of the eddy current tube structure of a household solid-state battery energy storage system according to the present invention.

[0020] Figure 5 This is a schematic diagram of the cooling component structure of a household solid-state battery energy storage system according to the present invention.

[0021] In the diagram: 10. Battery assembly; 101. Battery body; 102. Battery box; 103. Through hole; 11. First temperature sensor; 20. Cooling assembly; 201. Vortex tube; 2011. Tube body; 2012. Cold air inlet; 2013. Air inlet; 2014. Annular box; 202. Adjustment mechanism; 2021. Extension tube; 2022. Plug; 2023. Heat dissipation hole; 2024. Electric push rod; 2025. Heat dissipation box; 2026. Hot air inlet; 2027. Two-position five-way solenoid valve; 30. Receiving cavity; 31. Second temperature sensor; 40. Overflow port; 50. Diverter tube; 51. First valve body. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-5 The present invention provides a technical solution: a household solid-state battery energy storage system, comprising a battery module 10, a cooling module 20, and a receiving cavity 30 for supporting the battery module 10. The cooling assembly 20 includes a vortex tube 201 and an adjustment mechanism 202. The vortex tube 201 is provided with a cold air end and an air inlet end for communicating with the air outlet end of the compressed air pump. The cold air end of the vortex tube 201 is connected to the receiving cavity 30 for supplying cold air to the battery assembly 10 for heat exchange. The adjustment mechanism 202 is used to adjust the air outlet temperature of the cold air end.

[0024] Compressed air is generated by a compressed air pump and blown into the vortex tube 201. Cold air is generated from the cold air end and blown onto the battery assembly 10 without the need for any medium, thereby cooling the battery assembly 10. At the same time, the temperature of the cold air discharged from the cold air end is adjusted by adjusting the structure, so that the temperature of the battery assembly 10 that needs to be cooled can be adjusted according to the working time of the battery assembly 10.

[0025] Furthermore, since the compressed air generated by the air pump is cleaner than the outside air, the battery module 10 will not be affected by dust accumulation during the cooling process, so that the battery module 10 is in a relatively clean environment during operation, thereby improving the service life of the battery module 10.

[0026] It also includes an overflow port 40 that connects to the outside, which is located on the inner wall of the receiving cavity 30.

[0027] The cold air generated at the cold air end of the vortex tube 201 exchanges heat with the battery assembly 10 and is then discharged through the overflow port 40.

[0028] In this embodiment, the vortex tube 201 includes a tube body 2011, one end of which is provided with a cold air port 2012. The tube body 2011 is provided with a plurality of air inlets 2013 along the circumferential direction of the axis for communicating with the air outlet of the compressed air pump. The adjustment mechanism 202 is provided at the end of the tube body 2011 away from the cold air port 2012 for adjusting the outlet temperature of the cold air port 2012.

[0029] Compressed air generated by the air pump enters the pipe body 2011 through the air inlet 2013. This allows the compressed air to enter the pipe body 2011, creating vortices within the pipe body. After the vortices stabilize inside the pipe, they naturally stratify. The outer vortex adheres tightly to the pipe wall, rotates at a slower speed, but has higher pressure and temperature. The inner vortex is located near the central axis of the pipe, rotates at an extremely high speed, but has lower pressure and temperature. The significant velocity difference between the high-speed rotating inner and outer layers generates strong viscous friction. Imagine the outer layer as a brake pad and the inner layer as a rotating shaft. The outer layer moves slowly, which continuously slows down the faster-rotating inner layer. In physics, doing negative work on an object (i.e., hindering its motion) means extracting energy from that object. The kinetic energy of the inner gas (represented by its rotational speed) is continuously transferred to the outer gas through this viscous friction. This kinetic energy is eventually converted into heat energy in the outer gas, causing its temperature to rise significantly. The inner gas, stripped of its kinetic energy, has a much lower total energy, so its temperature drops sharply, forming a cold airflow. Under the action of the axial pressure gradient, it moves towards the colder end with lower pressure and is discharged, i.e., the cold air is discharged through the cold air outlet 2012.

[0030] In this embodiment, the pipe body 2011 is further configured to have an annular box 2014 for unified air intake, and the annular box 2014 is connected to the air outlet of the compressed air pump.

[0031] In order to ensure uniform air intake through the air inlet 2013 and maintain a relatively stable initial velocity of the compressed air entering the pipe 2011, the compressed air generated by the air pump first enters the annular box 2014. Due to the high air pressure generated by the compressed air, the compressed air instantly fills the entire annular box 2014. At the same time, under the action of positive pressure, the compressed air in the annular box 2014 simultaneously enters the air inlet 2013, thereby ensuring a uniform initial velocity of the compressed air entering the air inlet 2013.

[0032] In this embodiment, the axial direction of the air inlet 2013 is tangent to the circumference of the inner cavity of the pipe body 2011, so that the air intake airflow enters the pipe body 2011 tangentially along the pipe wall. The air inlet 2013 is a circular hole structure, or a tapered hole structure with the hole diameter gradually increasing from the inner cavity of the pipe body 2011 to the outer wall of the pipe body 2011.

[0033] In order to generate vortices inside the tube 2011, high-pressure air is injected into the tube 2011 through the tangential air inlet 2013. The air inside will rotate at high speed. This rotating airflow has a relatively high speed and forms a strong free vortex. At the same time, the circular hole structure allows the compressed air jet to smoothly combine with the inner wall of the tube 2011 after entering the tube 2011, forming a continuous and momentum-concentrated vortex ring.

[0034] To further increase the initial velocity of compressed air entering the pipe 2011, a tapered orifice with a gradually increasing diameter from the inner cavity of the pipe 2011 to the outer wall of the pipe 2011 can be used. Compressed air entering the pipe 2011 through the relatively small-diameter end can increase the initial velocity of the compressed air by passing through the tapered orifice with a gradually increasing diameter from the inner cavity of the pipe 2011 to the outer wall of the pipe 2011. The higher the initial velocity, the lower the temperature generated at the cooling port of the pipe 2011, effectively improving the cooling effect.

[0035] In this embodiment, the adjustment component is further configured to include an extension tube 2021 and a plug 2022. The extension tube 2021 is sleeved on the tube body 2011, and the plug 2022 is disposed on the end of the extension tube 2021 away from the tube body 2011. The plug 2022 has a heat dissipation hole 2023 that is in the same direction as the length of the extension tube 2021. It also includes a driving component, with an extension tube 2021 disposed at the driving end of the driving component for reciprocating movement along a first direction.

[0036] To adjust the temperature of the cold air at the air inlet 2012, the extension tube 2021 is driven to reciprocate on the tube body 2011 by a drive component, thereby adjusting the total length of the extension tube 2021 and the tube body 2011. As the total length of the extension tube 2021 and the tube body 2011 changes, the travel length of the vortex formed by the compressed air in the tube body 2011 changes. After the vortex touches the plug 2022, the inner airflow of the vortex rebounds and is discharged from the air inlet 2012 to form cold air. It can be seen that the longer the vortex travels, the lower the temperature of the cold air at the air inlet 2012, and the shorter the vortex travels, the higher the temperature of the cold air at the air inlet 2012.

[0037] The 2022 wire plug is a known existing technology, which is only cited here and will not be elaborated on further.

[0038] The further driving component adopts an electric push rod 2024, the telescopic end of which is connected to the extension tube 2021. In order to make the extension tube 2021 move better, the extension tube 2021 and the plug 2022 are integrated into one structure. The telescopic end of the electric push rod 2024 is connected to the plug 2022, and the telescopic end of the electric push rod 2024 avoids the heat dissipation hole 2023. Thus, during the extension or retraction of the telescopic end of the electric push rod 2024, the electric push rod 2024 indirectly drives the extension tube 2021 to reciprocate along the length of the tube body 2011.

[0039] In this embodiment, the diameter of the end of the plug 2022 near the extension tube 2021 is smaller than the diameter of the other end, and the smaller diameter end faces the extension tube 2021.

[0040] In the tube body 2011, the hot gas inside the vortex tube 201 is concentrated and rotates at high speed on the outer periphery of the tube wall. The plug 2022 is oriented towards the diameter of one end of the extension tube 2021 and the diameter of the other end, so that the hot gas flow is concentrated towards the heat dissipation hole 2023, which enhances the heat dissipation efficiency, reduces the reflection of high temperature air flow into the tube, and avoids interference with the internal vortex core area.

[0041] This embodiment is further configured to include a diversion pipe 50, which is used to connect the battery assembly 10 and the cold air end of the vortex tube 201. A first valve body 51 is provided on the diversion pipe 50, a first temperature sensor 11 for detecting its own temperature is provided on the battery assembly 10, and a second temperature sensor 31 for detecting the temperature inside the cavity is provided inside the cavity 30.

[0042] The second temperature sensor 31 is used to detect the ambient temperature inside the housing cavity 30. When the ambient temperature inside the housing cavity 30 is higher than the preset temperature of the second temperature sensor 31, the compressed air from the compressed air pump enters the vortex tube 201. The cold air end of the vortex tube 201 generates cold air and enters the housing cavity 30, thereby cooling the ambient temperature of the battery assembly 10. Since the battery assembly 10 will partially heat up during operation, it needs to be cooled down quickly and in a timely manner. The temperature of the battery assembly 10 is detected by the first temperature sensor 11. When the temperature of the battery assembly 10 is higher than the preset temperature of the first temperature sensor 11, the solenoid valve opens, and the cold air from the cold air end is directly blown onto the battery assembly 10 through the splitter pipe 50, thereby directly cooling the battery assembly 10.

[0043] In this embodiment, the battery assembly 10 is further configured to include a battery body 101 and a battery box 102 for carrying the battery body 101. The battery box 102 is disposed in the receiving cavity 30. The battery box 102 is provided with a through hole 103 communicating with the receiving cavity 30. The first temperature sensor 11 is disposed in the battery box 102. The battery box 102 is connected to the overflow port 40.

[0044] Cold air enters the receiving cavity 30, and positive pressure is continuously generated in the receiving cavity 30. Under the action of positive pressure, the cold air enters the battery box 102 through the through hole 103, thereby exchanging heat and cooling the battery body 101. The cold air after heat exchange is discharged through the overflow port 40, forming a complete airflow path.

[0045] This embodiment is further configured to include a heat sink 2025, which is disposed on the pipe body 2011 to collect the hot air discharged from the heat dissipation hole 2023, and the heat sink 2025 is provided with a hot air port 2026 for discharging hot air.

[0046] The heat dissipation box 2025 collects the heat dissipation holes 2023 and discharges it uniformly through the heat dissipation port 2026.

[0047] This embodiment is further configured to include a switching component, wherein both the hot air port 2026 and the cold air port 2012 are connected to the switching component, and the switching component is connected to the receiving cavity 30.

[0048] In order to make the battery module 10 adapt to different temperature environments, when the ambient temperature of the battery module 10 is low, it is necessary to heat up or preheat the battery module 10. The hot air generated by the eddy tube 201 during operation is directed into the receiving cavity 30 by the switching component to heat up or preheat the battery module 10.

[0049] Furthermore, the switching component adopts a two-position five-way solenoid valve 2027. As is known to those skilled in the art, the five port positions of the two-position five-way solenoid valve 2027 are: point A (connected to the cold air port 2012), point B (connected to the hot air port 2026), point P (connected to the receiving cavity 30), point R (exhaust end of point A), and point S (exhaust end of point B). Whether the vortex tube 201 is generating cold or hot air, the opposite end of the generated gas needs to be exhausted. Therefore, when the receiving cavity 30 needs cold air, point A and point P of the two-position five-way solenoid valve 2027 are connected, and point B and point S are connected. At this time, cold air enters the receiving cavity 30 through point P, and hot air is discharged through point S. When the receiving cavity 30 needs hot air, point B and point P are connected, and point A and point R are connected. At this time, hot air enters the receiving cavity 30 through point P, and cold air is discharged through point B.

[0050] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0051] During use, the temperature inside the outer casing is detected by the second temperature sensor 31. When the ambient temperature of the battery body 101 inside the outer casing is higher than the preset temperature value of the second temperature sensor 31, the compressed air pump generates compressed air. The compressed air enters the annular box 2014, filling the space inside the annular box 2014. The compressed air can then enter the pipe 2011 through the air inlet 2013, creating vortices within the pipe 2011. These vortices stratify within the pipe 2011, transferring most of the kinetic and thermal energy to a portion of the gas. Hot air is deprived of energy from another part of the gas to become cold air. The cold air is discharged into the containment cavity 30 through the cold air outlet 2012, thereby cooling the ambient temperature of the battery assembly 10. After the containment cavity 30 is filled with cold air, the cold air enters the battery box 102 through the through hole 103 to cool the battery body 101. This allows the battery body 101 to adapt to the cooling of the ambient temperature of the outer casing first. Then, the cold air in the containment cavity 30 is cooled by the positive pressure and passes through the battery body 101. Finally, the cooled cold air is discharged through the overflow outlet 40.

[0052] Since the cavity 30 contains several battery boxes 102, which in turn contain several battery bodies 101, when the temperature of an individual battery is too high, it needs to be cooled down quickly by cold air. When the temperature of the battery body 101 is detected by the first temperature sensor 11, which detects that the temperature of the battery body 101 is higher than the preset temperature value of the first temperature sensor 11, the first valve 51 is opened, and the cold air generated by the cold air end directly enters the battery box 102 through the diverter pipe 50 to cool down the battery body 101 and prevent the temperature of individual battery bodies 101 from being too high.

[0053] As the battery body 101 operates for a period of time, the second temperature sensor 31 detects the ambient temperature inside the accommodating cavity 30, and then needs to adjust the temperature of the cooling end to ensure that the battery body 101 is at a suitable temperature. The electric push rod 2024 is activated and pushes the plug 2022 to move. At this time, the plug 2022 drives the extension tube 2021 to move, thereby adjusting the total length of the extension tube 2021 and the tube body 2011, indirectly adjusting the length of the eddy current moving in the tube body 2011 and the extension tube 2021, thereby adjusting the cooling temperature of the cooling air inlet 2012 of the tube body 2011.

[0054] As the ambient temperature of the battery body 101 changes with the climate, when the ambient temperature of the battery assembly 10 is low, it needs to be heated or preheated. When the ambient temperature of the battery body 101 is high, it needs to be cooled. Depending on the situation, the hot air port 2026 and the cold air port 2012 are switched by the two-position five-way solenoid valve 2027, so as to achieve heating or cooling of the battery body 101.

[0055] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A domestic solid state battery energy storage system comprising a battery assembly (10), a cooling assembly (20) and a housing cavity (30) for carrying the battery assembly (10), characterized in that ； The cooling assembly (20) includes a vortex tube (201) and an adjustment mechanism (202). The vortex tube (201) is provided with a cold air end and an air inlet end for communicating with the air outlet end of the compressed air pump. The cold air end of the vortex tube (201) is connected to the receiving cavity (30) for supplying cold air to the battery assembly (10) for heat exchange. The adjustment mechanism (202) is used to adjust the air outlet temperature of the cold air end. It also includes an overflow port (40) that communicates with the outside, the overflow port (40) being opened on the inner wall of the receiving cavity (30).

2. The household solid-state battery energy storage system according to claim 1, characterized in that, The vortex tube (201) includes a tube body (2011), one end of which is provided with a cold air port (2012). The tube body (2011) has several air inlets (2013) circumferentially arranged along its axis for communicating with the air outlet of the compressed air pump. The adjustment mechanism (202) is located at the end of the tube body (2011) away from the cold air port (2012) and is used to adjust the outlet temperature of the cold air port (2012).

3. A household solid-state battery energy storage system according to claim 2, characterized in that, The pipe body (2011) is provided with an annular box (2014) for unified air intake, and the annular box (2014) is connected to the air outlet of the compressed air pump.

4. A household solid-state battery energy storage system according to claim 2, characterized in that, The axial direction of the air inlet (2013) is tangent to the circumference of the inner cavity of the tube body (2011) so that the air intake airflow enters the tube body (2011) tangentially along the tube wall. The air inlet (2013) is a circular hole structure or a conical hole structure with the hole diameter gradually increasing from the inner cavity of the tube body (2011) to the outer wall of the tube body (2011).

5. A household solid-state battery energy storage system according to claim 2, characterized in that, The adjustment assembly includes an extension tube (2021) and a plug (2022). The extension tube (2021) is sleeved on the tube body (2011), and the plug (2022) is disposed on the end of the extension tube (2021) away from the tube body (2011). The plug (2022) has a heat dissipation hole (2023) in the same direction as the length of the extension tube (2021). It also includes a driving component, wherein the extension tube (2021) is disposed at the driving end of the driving component and is used to be driven to reciprocate along a first direction.

6. A household solid-state battery energy storage system according to claim 5, characterized in that... The diameter of the end of the plug (2022) near the extension tube (2021) is smaller than the diameter of the other end, and the smaller diameter is oriented towards the extension tube (2021).

7. A household solid-state battery energy storage system according to claim 1, characterized in that... It also includes a diverter pipe (50), which is used to connect the battery assembly (10) and the cold air end of the vortex tube (201). The diverter pipe (50) is provided with a first valve body (51). The battery assembly (10) is provided with a first temperature sensor (11) for detecting its own temperature. The receiving cavity (30) is provided with a second temperature sensor (31) for detecting the temperature inside the cavity.

8. A household solid-state battery energy storage system according to claim 7, characterized in that, The battery assembly (10) includes a battery body (101) and a battery box (102) for carrying the battery body (101). The battery box (102) is disposed in the receiving cavity (30). The battery box (102) is provided with a through hole (103) communicating with the receiving cavity (30). The first temperature sensor (11) is disposed in the battery box (102). The battery box (102) is connected to the overflow port (40).

9. A household solid-state battery energy storage system according to claim 5, characterized in that, It also includes a heat sink (2025), which is installed on the pipe body (2011) to collect the hot air discharged from the heat dissipation holes (2023), and the heat sink (2025) is provided with a hot air port (2026) for discharging the hot air.

10. A household solid-state battery energy storage system according to claim 9, characterized in that, It also includes a switching component, wherein the hot air inlet (2026) and the cold air inlet (2012) are both connected to the switching component, and the switching component is connected to the receiving cavity (30).

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