Household energy storage battery management system

Abstract

The invention discloses a household energy storage battery management system, and belongs to the technical field of energy storage batteries, the household energy storage battery management system comprises an energy storage box buried in an underground area, an energy storage end cover and a battery pack assembled with the energy storage box, the bottom of the energy storage box is provided with a ground temperature heat exchange unit, one side of the energy storage box body is provided with a discarding port penetrating through the side wall, and the energy storage end cover is arranged in the energy storage box body. A high-risk battery protection box is arranged on the side wall, located on one side of the discarding opening, of the energy storage box body, a pressure storage mounting base is arranged on one side of the energy storage box body, and the pressure storage mounting base is connected with a force storage push plate through a force storage device. The power storage device is triggered through fusing of a thermosensitive wire, a high-temperature abnormal battery pack can be instantly pushed into the independent high-risk battery protection box, chain reaction is avoided, the fire risk is reduced, the high-risk battery protection box is provided with an electromagnetic control fire extinguishing sand putting system, battery combustion can be rapidly inhibited, secondary damage is reduced, and the safety of the battery is improved. And the magnetic type wiring device is automatically powered off when an abnormal battery is discarded, so that the risk of electric sparks or short circuits is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage batteries, and in particular to a household energy storage battery management system. Background Art

[0002] The home energy storage battery management system is the core component of the home energy storage system, responsible for ensuring the safe, efficient and long-life operation of the battery pack. Through reasonable selection and BMS optimization, the home energy storage system can significantly improve the self-generation and self-use rate (up to more than 80%), while extending the battery life to more than 10 years.

[0003] At present, household energy storage batteries are installed in indoor or outdoor energy storage boxes, which are greatly affected by the ambient temperature. In addition, the noise generated by the battery operation is difficult to avoid. In order to ensure the storage energy, multiple battery packs are often provided. In order to facilitate daily use, the battery packs are often designed to be detachable. When an abnormality occurs in one battery pack and causes a fire, it often involves the other battery packs connected to it, causing safety problems for the energy storage system. In addition, the existing management system cannot timely remove the abnormal battery pack, and it is difficult to avoid damage to the other normal battery packs. Based on this, a household energy storage battery management system is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that in order to ensure energy storage, multiple battery packs are often provided. In order to facilitate daily use, the battery packs are often designed to be detachable. When one battery pack malfunctions and causes a fire, it often involves the remaining battery packs connected to it, causing safety problems for the energy storage system. In addition, the existing management system is unable to promptly remove the abnormal battery pack, and it is difficult to avoid damage to the remaining normal battery packs. A home energy storage battery management system is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A household energy storage battery management system includes an energy storage box buried in an underground area, an energy storage end cap, and a battery pack assembled with the energy storage box. A geothermal heat exchange unit is provided at the bottom of the energy storage box. A disposal port is provided on one side of the energy storage box body, penetrating the side wall. A high-risk battery protection box is provided on the side wall of the energy storage box body located on the side of the disposal port. A pressure storage mounting seat is provided on one side of the energy storage box body. The pressure storage mounting seat is connected to a force storage push plate via a force storage device. The force storage push plate is connected to the pressure storage mounting seat via a high-temperature release device. The force storage push plate is provided with a magnetic connection device compatible with the battery pack.

[0007] An air outlet cover is provided above the energy storage end cover, and a heat exchange fan generating suction is provided in the air outlet cover. The energy storage end cover is rotatably connected to the side wall of the energy storage box through a plurality of hinges;

[0008] The geothermal heat exchange unit includes a U-shaped heat exchange seat arranged at the bottom of the energy storage box, the U-shaped heat exchange seat is provided with a support frame for assembling and installing the energy storage box, and the U-shaped heat exchange seat is evenly provided with multiple heat exchange baffles that penetrate into the energy storage box.

[0009] As a preferred solution, the battery pack includes an energy storage battery shell and a battery module arranged in the energy storage battery shell. Heat exchange conductive plates are provided on both sides of the energy storage battery shell, and an L-shaped terminal is provided on one side of the energy storage battery shell.

[0010] As a preferred solution, the high-risk battery protection box consists of an inclined sliding bottom plate, a protection frame plate, and an electromagnetic control plate arranged on top of the protection frame plate, and the electromagnetic control plate is filled with fire extinguishing sand.

[0011] As a preferred solution, the force storage device includes a force storage groove opened in the pressure storage mounting seat, a U-shaped force storage seat is fixedly arranged in the force storage groove, an elastic sliding column is fixedly connected to the U-shaped force storage seat, and two relatively arranged force storage slides are slidably arranged on the elastic sliding column. The force storage slide is connected to the side wall of the U-shaped force storage seat through a sleeved interference spring sleeved on the outer side wall of the elastic sliding column.

[0012] As a preferred solution, the side wall of the force storage slide is connected to the force storage plate through a force storage connecting rod, and a pressure seat is slidably arranged on the force storage plate. The pressure seat is connected to the side wall of the force storage plate through a spring column, and the pressure seat is fixedly connected to the side wall of the force storage push plate.

[0013] As a preferred solution, the high-temperature release device includes a sliding groove opened on the back plate of the force storage push plate, and two groups of oppositely arranged locking rods are slidingly arranged on the inner wall of the sliding groove, and the ends of the locking rods are provided with inclined locking pieces. The side walls of the pressure storage mounting seat are fixedly connected with locking clips, and the inner walls of the sliding groove are connected to the locking rods through tension springs. A thermistor wire is provided between the two locking rods, and a heat-conducting plate for cutting the thermistor wire is fixedly provided on the side walls of the force storage push plate.

[0014] As a preferred solution, an air inlet is provided in the U-shaped heat exchange seat, a vertical air outlet adapted to the air inlet is provided inside the bottom of the heat exchange baffle, a heat dissipation hole is provided above the vertical air outlet, and a heat exchange plate is provided on the side wall of the heat exchange baffle for exchanging heat with the underground soil.

[0015] As a preferred solution, the magnetic wiring device includes a magnetic guide seat arranged on the force storage push plate, the magnetic guide seat magnetically adsorbs the electromagnetic plate, the end of the electromagnetic plate is provided with a docking plug adapted to the magnetic guide seat, and the side wall of the electromagnetic plate is provided with a wiring seat adapted to the wiring terminal.

[0016] As a preferred solution, the discarding port is adapted to the force storage push plate, and an adsorption magnet is provided on the contact surface between the discarding port and the force storage push plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention triggers the power storage device by melting the thermal wire, which can instantly push the abnormally high-temperature battery pack into an independent high-risk battery protection box, avoiding chain reactions and reducing fire risks. By equipping the high-risk battery protection box with an electromagnetically controlled fire-extinguishing sand delivery system, it can quickly suppress battery combustion and reduce secondary damage. In addition, the magnetic wiring device automatically cuts off the power when the abnormal battery is discarded, avoiding the risk of electric sparks or short circuits.

[0019] 2. The present invention combines a U-shaped heat exchange seat with soil heat exchange through an underground design, uses ground temperature to stabilize the battery temperature, reduces the impact of the external environment (such as extreme temperatures), and uses air cooling (negative pressure suction of the heat exchange fan) and ground temperature heat exchange to work together. The heat dissipation efficiency is improved through heat dissipation holes, gap design and heat exchange plates, thereby extending battery life.

[0020] 3. This invention solves the core issues of safety, noise, temperature control, etc. in household energy storage through intelligent isolation, efficient thermal management and modular design, while taking into account both economic and environmental requirements, and providing an innovative solution for the efficient and safe use of household energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the assembly structure of a household energy storage battery management system proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of a household energy storage battery management system proposed by the present invention;

[0023] Figure 3 This is a structural diagram of an energy storage box and a power storage device in a household energy storage battery management system proposed by the present invention;

[0024] Figure 4 This is a structural diagram of a power storage device and a battery pack in a household energy storage battery management system proposed by the present invention;

[0025] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 6 This is a structural schematic diagram of a geothermal heat exchange unit in a household energy storage battery management system proposed by the present invention;

[0027] Figure 7 This is a structural diagram of a power storage device in a household energy storage battery management system proposed by the present invention;

[0028] Figure 8 This is a structural schematic diagram of a high-temperature release device in a household energy storage battery management system proposed by the present invention.

[0029] In the figure: 1. Energy storage box; 2. Energy storage end cover; 3. Battery pack; 4. Disposal port; 5. High-risk battery protection box; 6. Pressure storage mounting seat; 7. Pressure storage push plate; 8. Air outlet hood; 9. Heat exchange fan; 10. U-shaped heat exchange seat; 11. Support frame; 12. Heat exchange baffle; 13. Heat exchange guide plate; 14. Terminal block; 15. U-shaped pressure storage seat; 16. Elastic slide column; 17. Pressure storage slide seat; 18. Pressure storage plate; 19. Pressure seat; 20. Locking rod; 21. Inclined locking piece; 22. Locking card; 23. Thermistor wire; 24. Heat conduction plate; 25. Air inlet vent; 26. Heat exchange plate; 27. Magnetic guide seat; 28. Magnetic plate; 29. ​​Plug; 30. Terminal block. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0033] Example, see Figures 1 to 8 , a household energy storage battery management system includes an energy storage box 1 buried in an underground area, an energy storage end cover 2 and a battery pack 3 assembled with the energy storage box 1, the battery pack 3 includes an energy storage battery shell and a battery module arranged in the energy storage battery shell, wherein the battery pack 3 and the energy storage box 1 are detachably installed, and heat exchange guide plates 13 are arranged on both sides of the energy storage battery shell, wherein the heat exchange guide plates 13 are not in contact with the heat dissipation holes arranged on the heat exchange partition 12, and there is a gap between the two, which can meet the effect of rapid heat exchange by air cooling, and an L-shaped wiring terminal 14 is arranged on one side of the energy storage battery shell, and the arrangement of the wiring terminal 14 can meet the docking with the wiring seat 30 arranged on the power storage push plate 7 in the energy storage box 1, wherein the size of the battery pack 3 is not compatible with the energy storage box 1, and there are gaps around it, which ensures heat dissipation while reducing friction, so as to facilitate the discarding of the abnormally high-temperature battery pack 3 under the action of the power storage device.

[0034] A geothermal heat exchange unit is provided at the bottom of the energy storage box 1, and a discarding port 4 is provided on one side of the energy storage box 1 that penetrates the side wall. The discarding port 4 is adapted to the power storage push plate 7, and an adsorption magnet is provided on the contact surface between the discarding port 4 and the power storage push plate 7. The adsorption magnet can ensure that when the power storage push plate 7 moves to the discarding port 4, it automatically achieves the effect of adsorption on the discarding port 4.

[0035] A high-risk battery protection box 5 is provided on the side wall of the energy storage box 1 located on the side of the disposal port 4. The high-risk battery protection box 5 consists of an inclined sliding bottom plate, a protective frame plate and an electromagnetic control board arranged on the top of the protective frame plate. The electromagnetic control board is filled with fire extinguishing sand. The electromagnetic control board can be controlled to open by a sensor, and the fire extinguishing sand on the top is promptly put into the high-risk battery protection box 5 to reduce the harm caused by the continuous combustion of the battery.

[0036] A pressure storage mounting seat 6 is provided on one side of the energy storage box 1. The pressure storage mounting seat 6 is connected to a force storage push plate 7 through a force storage device. The force storage device includes a force storage groove provided in the pressure storage mounting seat 6. A U-shaped force storage seat 15 is fixedly provided in the force storage groove. An elastic sliding column 16 is fixedly connected to the U-shaped force storage seat 15. Two relatively arranged force storage slides 17 are slidably provided on the elastic sliding column 16. The force storage slide 17 is connected to the side wall of the U-shaped force storage seat 15 through a sleeved interference spring sleeved on the outer side wall of the elastic sliding column 16.

[0037] Furthermore, the side wall of the force storage slide 17 is connected to the force storage plate 18 through a force storage connecting rod, and a pressure seat 19 is slidably provided on the force storage plate 18. The pressure seat 19 is connected to the side wall of the force storage plate 18 through a spring column, and the pressure seat 19 is fixedly connected to the side wall of the force storage push plate 7.

[0038] It should be noted that the two ends of the force storage connecting rod are respectively rotatably connected to the force storage slide 17 and the force storage plate 18. In the force storage state, the spring column is in a compressed state, while the sleeve resistance springs arranged on both sides are in a pulled state. The double spring action can ensure the force storage effect.

[0039] The force storage push plate 7 is connected to the pressure storage mounting seat 6 through a high-temperature release device. Furthermore, the high-temperature release device includes a sliding groove opened on the back plate of the force storage push plate 7. Two groups of oppositely arranged locking rods 20 are slidingly arranged on the inner wall of the sliding groove. The end of the locking rod 20 is provided with a bevel locking piece 21. The side wall of the pressure storage mounting seat 6 is fixedly connected with a locking card 22. The inner wall of the sliding groove is connected to the locking rod 20 through a tension spring. A thermistor wire 23 is provided between the two locking rods 20. The thermistor wire 23 is a common material that is easily melted by heat, which is the existing technology. The side wall of the force storage push plate 7 is fixedly provided with a heat conducting plate 24 for cutting the thermistor wire 23.

[0040] It should be noted that the locking card 22 will lock the inclined locking member 21. At this time, under the action of the thermal wire 23, the two locking rods 20 are in a state of mutual locking with the locking card 22. At this time, the thermal wire 23 is in a taut state. When the heat conducting plate 24 is under the action of the abnormal temperature of the battery pack 3, high temperature will quickly transfer heat to the thermal wire 23, thereby melting the thermal wire 23. At this time, the tension springs originally set on both sides are in the telescopic state and the tension generated will drive the two locking rods 20 to move to both sides, thereby breaking the locking state of the two locking rods 20 and the locking card 22. At this time, the limit of the force storage push plate 7 is released. Under the action of the force storage device, elastic potential energy will be applied to the force storage push plate 7, thereby driving the force storage push plate 7 to drive the abnormal battery pack 3 to be pushed quickly, and the battery pack 3 is moved from the disposal port 4 into the high-risk battery protection box 5, thereby achieving effective protection for the remaining batteries.

[0041] A magnetic wiring device compatible with the battery pack 3 is provided on the power storage push plate 7. The magnetic wiring device includes a magnetic guide seat 27 provided on the power storage push plate 7. The magnetic guide seat 27 magnetically attracts the electromagnetic plate 28. The end of the electromagnetic plate 28 is provided with a docking plug 29 compatible with the magnetic guide seat 27, and the side wall of the electromagnetic plate 28 is provided with a wiring seat 30 compatible with the wiring terminal 14.

[0042] It should be noted that the connection method of magnetic attraction between the conductive magnetic plate 28 and the magnetic guide seat 27 can not only ensure the electrical signal connection between the terminal 14 and the terminal seat 30, but also achieve timely electrical signal disconnection when the battery pack 3 is discarded to avoid affecting the remaining circuits.

[0043] An air outlet cover 8 is provided above the energy storage end cover 2, and a heat exchange fan 9 generating suction is provided inside the air outlet cover 8. The energy storage end cover 2 is rotatably connected to the side wall of the energy storage box 1 through a plurality of hinges. The rotatable connection makes it easy to open and close the air outlet cover 8.

[0044] The geothermal heat exchange unit includes a U-shaped heat exchange seat 10 arranged at the bottom of the energy storage box 1. The U-shaped heat exchange seat 10 is provided with a support frame 11 for assembling and installing the energy storage box 1. The U-shaped heat exchange seat 10 is evenly provided with multiple heat exchange baffles 12 that penetrate into the energy storage box 1.

[0045] Furthermore, an air inlet 25 is provided in the U-shaped heat exchange seat 10, and a rain shield device is provided at the air inlet 25. This is a conventional setting and will not be described in detail here. A vertical air vent compatible with the air inlet 25 is provided inside the bottom of the heat exchange baffle 12, and a heat dissipation hole is provided above the vertical air vent. The side wall of the heat exchange baffle 12 is provided with a heat exchange plate 26 for exchanging heat with the underground soil.

[0046] It is worth noting that soil is buried in the area between the U-shaped heat exchange seat 10 and the energy storage box 1, which can ensure heat exchange between the U-shaped heat exchange seat 10 and the soil, and effectively utilize the ground temperature to achieve the effect of balancing the temperature of the battery pack 3 in the energy storage box 1.

[0047] When managing energy storage batteries, the present invention pre-buries the energy storage batteries in the soil, and uses a U-shaped heat exchange seat 10 provided at the bottom of the energy storage box 1 to achieve the effect of using low temperature to cool the battery pack 3 in the energy storage box 1. When the heat exchange fan 9 provided on the energy storage end cover 2 is working, suction is generated in the energy storage box 1. The suction generates negative pressure suction on the heat exchange baffle 12 provided in the energy storage box 1. At this time, external wind is sucked in through the air inlet 25 provided on the U-shaped heat exchange seat 10 by the suction force, and is cooled by the low temperature and then acts on the battery pack 3, achieving a cooling effect. In addition, being buried underground can also reduce noise generation.

[0048] When the battery pack 3 generates abnormal high temperature, its heat will come into contact with the thermistor wire 23 under the action of the heat conducting plate 24. At this time, the thermistor wire 23 will break under the action of high temperature. At this time, the tension springs originally set on both sides are in the extended state and the tension generated will drive the two locking rods 20 to move to both sides, thereby breaking the locked state of the two locking rods 20 and the locking card 22. At this time, the limit on the force storage push plate 7 is released. Under the action of the force storage device, elastic potential energy will be applied to the force storage push plate 7, thereby driving the force storage push plate 7 to drive the abnormal battery pack 3 to be pushed quickly, and the battery pack 3 is moved from the disposal port 4 into the high-risk battery protection box 5, thereby achieving effective protection for the remaining batteries. The electromagnetic control panel is controlled to open through the sensor, and the fire extinguishing sand on the top is promptly put into the high-risk battery protection box 5, reducing the harm caused by the continuous burning of the battery.

[0049] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A household energy storage battery management system, comprising an energy storage box (1) buried in an underground area, an energy storage end cover (2), and a battery pack (3) assembled and installed with the energy storage box (1), characterized in that: The bottom of the energy storage box (1) is provided with a geothermal heat exchange unit, one side of the energy storage box (1) is provided with a discarding port (4) penetrating the side wall, the side wall of the energy storage box (1) located on the side of the discarding port (4) is provided with a high-risk battery protection box (5), one side of the energy storage box (1) is provided with a pressure storage mounting seat (6), the pressure storage mounting seat (6) is connected to a pressure storage push plate (7) through a power storage device, the pressure storage push plate (7) is connected to the pressure storage mounting seat (6) through a high-temperature release device, and the pressure storage push plate (7) is provided with a magnetic connection device adapted to the battery pack (3); An air outlet hood (8) is provided above the energy storage end cover (2), a heat exchange fan (9) for generating suction force is provided in the air outlet hood (8), and the energy storage end cover (2) is rotatably connected to the side wall of the energy storage box (1) via a plurality of hinges; The geothermal heat exchange unit comprises a U-shaped heat exchange seat (10) arranged at the bottom of the energy storage box (1); a support frame (11) for assembling and installing the energy storage box (1) is arranged on the U-shaped heat exchange seat (10); and a plurality of heat exchange baffles (12) are evenly arranged on the U-shaped heat exchange seat (10) and penetrate into the energy storage box (1).

2. A household energy storage battery management system according to claim 1, characterized in that: The battery pack (3) comprises an energy storage battery housing and a battery module arranged in the energy storage battery housing. Heat exchange conductive plates (13) are arranged on both sides of the energy storage battery housing, and an L-shaped connection terminal (14) is arranged on one side of the energy storage battery housing.

3. A household energy storage battery management system according to claim 1, characterized in that: The high-risk battery protection box (5) comprises an inclined sliding bottom plate, a protection frame plate, and an electromagnetic control plate arranged on top of the protection frame plate, wherein the electromagnetic control plate is filled with fire extinguishing sand.

4. A household energy storage battery management system according to claim 1, characterized in that: The force storage device comprises a force storage groove provided in a pressure storage mounting seat (6), a U-shaped force storage seat (15) being fixedly provided in the force storage groove, an elastic sliding column (16) being fixedly connected to the U-shaped force storage seat (15), two force storage slides (17) being slidably provided opposite to each other on the elastic sliding column (16), and the force storage slides (17) being connected to the side wall of the U-shaped force storage seat (15) via a sleeved interference spring sleeved on the outer side wall of the elastic sliding column (16).

5. A household energy storage battery management system according to claim 4, characterized in that: The side wall of the force storage slide seat (17) is connected to a force storage plate (18) through a force storage connecting rod, a pressure seat (19) is slidably provided on the force storage plate (18), the pressure seat (19) is connected to the side wall of the force storage plate (18) through a spring column, and the pressure seat (19) is fixedly connected to the side wall of the force storage push plate (7).

6. A household energy storage battery management system according to claim 5, characterized in that: The high-temperature release device includes a sliding groove opened on the back plate of the force storage push plate (7), two groups of oppositely arranged locking rods (20) are slidingly arranged on the inner wall of the sliding groove, and the ends of the locking rods (20) are provided with inclined locking pieces (21), and the side walls of the pressure storage mounting seat (6) are fixedly connected with locking clamps (22), the inner wall of the sliding groove is connected to the locking rods (20) through a tension spring, a thermal wire (23) is provided between the two locking rods (20), and a heat conducting plate (24) for cutting the thermal wire (23) is fixedly provided on the side walls of the force storage push plate (7).

7. A household energy storage battery management system according to claim 1, characterized in that: An air inlet (25) is provided in the U-shaped heat exchange seat (10), a vertical air outlet adapted to the air inlet (25) is provided inside the bottom of the heat exchange baffle (12), a heat dissipation hole is provided above the vertical air outlet, and a heat exchange plate (26) for exchanging heat with underground soil is provided on the side wall of the heat exchange baffle (12).

8. A household energy storage battery management system according to claim 2, characterized in that: The magnetic wiring device comprises a magnetic guide seat (27) arranged on a force storage push plate (7); a conductive magnetic plate (28) is magnetically attracted to the magnetic guide seat (27); a docking plug (29) adapted to the magnetic guide seat (27) is provided at the end of the conductive magnetic plate (28); and a wiring seat (30) adapted to the wiring terminal (14) is provided on the side wall of the conductive magnetic plate (28).

9. A household energy storage battery management system according to claim 1, characterized in that: The discarding port (4) is adapted to the force storage push plate (7), and an adsorption magnet is provided on the contact surface between the discarding port (4) and the force storage push plate (7).

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