Lead-acid battery isolation device with phase change energy storage material

Abstract

The invention relates to a lead-acid battery isolation device with a phase change energy storage material, and belongs to the technical field of lead-acid battery packs. Comprising a box body composed of a shell, a bottom plate and a top plate, a temperature control partition plate is inserted into the shell, and the temperature control partition plate is filled with a phase change energy storage material. A plurality of liquid channels, a liquid discharging channel and a liquid inlet channel are arranged in the bottom plate, and every two adjacent liquid channels are in through connection with the liquid discharging channel and the liquid inlet channel respectively. The bottom of the temperature control partition plate is connected with two pipes in a penetrating mode, and the two pipes are connected with the two adjacent liquid channels in a penetrating mode respectively. A heat exchange assembly is fixed outside the shell, and the tail ends of the liquid drainage channel and the liquid inlet channel are in through connection with the heat exchange assembly through pipelines. The adjacent lead-acid batteries are isolated by the partition plates, the phase change energy storage materials are arranged in the partition plates, and the temperatures of the lead-acid batteries are adjusted through the phase change energy storage materials, so that the lead-acid batteries are always in the optimal working temperature interval, the performance of the lead-acid batteries is improved, and the service life of the lead-acid batteries is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of lead-acid battery packs, and in particular relates to a lead-acid battery isolation device with a phase change energy storage material. Background Art

[0002] Lead-acid batteries have a history of more than 150 years. The technology is very mature and the performance is stable and reliable. Although lead-acid batteries are not as good as new batteries such as lithium-ion batteries in terms of energy density and weight, they still have obvious advantages in cost, reliability, ease of maintenance and environmental friendliness.

[0003] Compared with lithium batteries, lead-acid batteries have lower manufacturing costs and smaller initial investments. They are relatively simple to maintain and have lower maintenance costs. Lead-acid batteries can still maintain a long cycle life under deep discharge conditions and are suitable for applications that require frequent charging and discharging. Under shallow cycle (partial discharge) conditions, the cycle life of lead-acid batteries can reach thousands of times.

[0004] The voltage and electrolyte specific gravity of lead-acid batteries can be directly measured, making it easy to monitor the battery status. Regularly replenishing distilled water and cleaning the battery terminals can keep the battery in good condition.

[0005] Therefore, as an energy storage system for the power grid, lead-acid batteries are more suitable than lithium batteries. However, due to the limited voltage of a single lead-acid battery, in order to increase the overall voltage of the energy storage system, multiple lead-acid batteries are generally connected in series, and in order to increase the energy storage capacity, multiple series-connected lead-acid battery groups are connected in parallel. Usually, several lead-acid batteries are placed in the same box, and then the lead-acid batteries are electrically connected to each other through a power connection device without any other processing.

[0006] However, during the operation of the lead-acid battery, heat is released, and the temperature of the external environment will also affect the temperature of the lead-acid battery. The optimal operating temperature of the lead-acid battery is about 30°C. At this temperature, the performance of the lead-acid battery is the best and the service life is the longest. Although the lead-acid battery can operate in a wide temperature range (approximately from -20°C to 60°C), too high or too low a temperature will have an adverse effect on its performance and life. Summary of the invention

[0007] The technical problem to be solved by the present application is: to overcome the deficiencies of the prior art and to provide a lead-acid battery isolation device with a phase change energy storage material. In the present application, adjacent lead-acid batteries are isolated by partitions, and phase change energy storage materials are arranged inside the partitions. The temperature of the lead-acid battery is regulated by the phase change energy storage material so that it is always in the optimal operating temperature range, thereby improving the performance of the lead-acid battery and extending its service life.

[0008] The technical solution adopted by this application to solve the problems existing in the prior art is:

[0009] A lead-acid battery isolation device with phase change energy storage material comprises a box body consisting of an outer shell, a bottom plate and a top plate, wherein a plurality of temperature control partitions are inserted inside the outer shell, and the temperature control partitions are filled with phase change energy storage material.

[0010] A plurality of liquid channels arranged in parallel and at intervals, a liquid discharge channel and a liquid inlet channel are arranged inside the bottom plate, and two adjacent liquid channels are respectively connected with the liquid discharge channel and the liquid inlet channel.

[0011] The bottom of the temperature control partition is connected with two tubes, and the two tubes are connected with two adjacent liquid channels respectively.

[0012] A heat exchange assembly is fixed on the outside of the shell, and the ends of the liquid discharge channel and the liquid inlet channel are respectively connected to the heat exchange assembly through pipelines.

[0013] Preferably, the heat exchange assembly includes a heat exchange device, the heat exchange device is abutted with a heat exchange tube on the outside, both ends of the heat exchange tube are connected to a liquid discharge channel and a liquid inlet channel through pipelines, and a liquid pump is provided on the pipeline.

[0014] Preferably, the heat exchange device is a semiconductor refrigeration plate group, and a heat exchange tube is respectively abutted on both sides of the semiconductor refrigeration plate group, and one end of the two heat exchange tubes is commonly connected to a liquid inlet manifold, and the other end is commonly connected to a liquid discharge manifold.

[0015] The liquid inlet manifold is connected with a liquid replenishing pipe and a liquid inlet main pipe, the liquid inlet main pipe is connected with the liquid inlet pipeline, and the liquid pump is arranged on the liquid inlet main pipe.

[0016] A baffle is rotatably connected to the through connection between the drainage manifold and the two heat exchange tubes. The rotating shaft of the baffle is located between the through connection ports of the two heat exchange tubes. The end of the rotating shaft of the baffle is passed through the outside of the drainage manifold and is connected to a motor. After the baffle rotates, the end portion abuts against the inner wall of one end of the drainage manifold, and after the abutment, the through connection port of one heat exchange tube is blocked, and the drainage manifold is through-connected with the drainage channel.

[0017] Preferably, the temperature control baffle includes a second shell, a vertical plate is provided in the middle of the second shell, the upper end of the vertical plate is spaced apart from the top of the second shell, two tubes are provided on both sides of the vertical plate, a sealing seat is provided at the through connection between the tube and the second shell, a guide rod is coaxially fixedly connected above the sealing seat, a first spring is sleeved on the guide rod, a spring seat is provided inside the second shell, the guide rod passes through the spring seat, and the upper end of the first spring abuts against the bottom surface of the spring seat.

[0018] The bottom plate is provided with a plurality of first plug holes which are connected with the liquid channel through and through, and a vertically arranged push rod is fixed inside the first plug hole, and the push rod is matched and connected with the sealing seat.

[0019] Preferably, the phase change energy storage material inside the temperature control partition is sodium nitrate decahydrate or calcium chloride hexahydrate.

[0020] Preferably, the temperature control partitions are arranged at intervals in the longitudinal direction, and a fire extinguishing partition is provided between two temperature control partitions adjacent to each other in the transverse direction. The fire extinguishing partition and the temperature control partition divide the interior of the shell into a plurality of independent grids, and a lead-acid battery is provided in each grid.

[0021] Preferably, a plurality of connection components are provided inside the top plate, and all the lead-acid batteries inside the shell are connected in series through the connection components. Two power terminals are connected to the outside of the top plate, and the power terminals are electrically connected to the power posts at both ends of the lead-acid batteries connected in series.

[0022] Preferably, a positioning groove is recessed on the bottom surface of the top plate, a first positioning strip is protruding on the top of the fire extinguishing partition, a second positioning strip is protruding on the top of the temperature control partition, and the first positioning strip and the second positioning strip are inserted into the positioning groove.

[0023] Preferably, a positioning hole is recessed on the bottom plate, and a positioning pin is protruded from the bottom of the fire extinguishing partition, and the positioning pin is inserted into the positioning hole.

[0024] Preferably, a second socket is recessed on the bottom surface of the top plate, and the connecting assembly includes a conductive sleeve and a conductive plate. The conductive sleeve is inserted into the second socket, and the conductive plate electrically connects the two conductive sleeves that are matched and connected to each other. The power post of the lead-acid battery is inserted into the second socket, and the power post is electrically connected to the conductive sleeve.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) Adjacent lead-acid batteries are separated by partitions, and phase change energy storage materials are arranged inside the partitions. The temperature of the lead-acid batteries is regulated by the phase change energy storage materials so that they are always in the optimal operating temperature range, thereby improving the performance of the lead-acid batteries and extending their service life.

[0027] (2) After a lead-acid battery catches fire, the connection components can be automatically disconnected to isolate it, and the fire can be controlled through the fire extinguishing partition. The flowing phase change energy storage material can control the temperature of other lead-acid batteries to prevent thermal runaway of other lead-acid batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 This is a structural diagram of a lead-acid battery isolation device with phase change energy storage material for this application.

[0030] Figure 2 This is an exploded view of a lead-acid battery isolation device with phase change energy storage material for this application.

[0031] Figure 3 This is a structural diagram of a lead-acid battery isolation device with phase change energy storage material after removing the top plate.

[0032] Figure 4 for Figure 3 The structure diagram after taking out the lead-acid battery pack,

[0033] Figure 5 This is a shell structure diagram of a lead-acid battery isolation device with phase change energy storage material in this application.

[0034] Figure 6 This is a bottom plate structure diagram of a lead-acid battery isolation device with phase change energy storage material in this application.

[0035] Figure 7 for Figure 6 A partial enlarged view of the middle A.

[0036] Figure 8 for Figure 6 A cross-sectional view of

[0037] Fig. 9 This is the first structural diagram of a fire-extinguishing side baffle of a lead-acid battery isolation device with phase change energy storage material in this application.

[0038] Fig.10 This is the second structural diagram of a fire-extinguishing side baffle of a lead-acid battery isolation device with phase change energy storage material in this application.

[0039] Fig.11 for Fig. 9 A cross-sectional view of

[0040] Fig.12 This is a diagram of the structure of a temperature-controlled partition in a lead-acid battery isolation device with phase-change energy storage material.

[0041] Fig.13 for Fig.12 A cross-sectional view of

[0042] Fig.14 for Fig.13 A partial enlarged view of point B in the middle.

[0043] Fig.15 This is a structural diagram of a heat exchange assembly in a lead-acid battery isolation device with phase change energy storage material in this application.

[0044] Fig.16 for Fig.15 Structure diagram of heat exchange piping.

[0045] Fig.17 for Fig.16 Cross-sectional view of the motor.

[0046] Fig.18 This is a top structural diagram of a top plate in a lead-acid battery isolation device with phase change energy storage material in this application.

[0047] Fig.19 This is a top plate bottom structure diagram of a lead-acid battery isolation device with phase change energy storage material in this application.

[0048] Fig. 20 This is a partial cross-sectional view of the top plate of a lead-acid battery isolation device with phase change energy storage material in this application.

[0049] Fig.21 for Fig. 20 A partial enlarged view of point C in the middle.

[0050] Fig. 22 This is a structural diagram of the internal connection components of the top plate in a lead-acid battery isolation device with phase change energy storage material in this application.

[0051] Fig.23 This is the structural diagram after the connection component is connected to the lead-acid battery pack.

[0052] Fig.24 for Fig.23 Top view of the .

[0053] In the figure: 1-housing, 101-slot, 2-bottom plate, 201-liquid channel, 202-liquid discharge channel, 203-liquid inlet channel, 204-first jack, 205-rod, 206-positioning hole, 3-fire extinguishing baffle, 301-first shell, 302-first convex plate, 303-first positioning strip, 304-positioning pin, 305-first through hole, 306-first heat conducting plate, 307-first temperature bag, 308-push plate, 3081-second through hole, 309-guide rail, 310-sealing cover, 4-temperature control baffle, 401-second shell, 402-second positioning strip, 403-second convex plate, 404-vertical plate, 405-tube, 406- Ejector, 407-sealing seat, 408-guide rod, 409-first spring, 410-spring seat, 5-liquid inlet joint, 6-liquid inlet main pipe, 7-liquid pump, 8-liquid inlet manifold, 801-liquid replenishing pipe, 9-heat exchange tube, 10-liquid discharge manifold, 11-baffle, 12-motor, 13-semiconductor refrigeration plate group, 14-cover, 15-lead-acid battery, 1501-electrical column, 16-top plate, 1601-second jack, 1602-positioning groove, 1603-spring cavity, 17-second heat conduction plate, 18-third heat conduction plate, 19-second temperature bag, 20-electrical board, 21-second spring, 22-conductive sleeve, 23-conductive plate, 24-electrical terminal. DETAILED DESCRIPTION

[0054] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0055] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present application.

[0056] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] The following is a further detailed description of a lead-acid battery isolation device with phase change energy storage material of the present application in conjunction with the accompanying drawings, but it is not intended to limit the present application.

[0058] A lead-acid battery isolation device with phase change energy storage material, comprising Figures 1 to 24 As shown, the box body includes an outer shell 1, a bottom plate 2 and a top plate 16. The upper and lower ends of the outer shell 1 are open. The bottom plate 2 is detachably connected to the bottom of the outer shell 1 by bolts, and the top plate 16 is detachably connected to the top of the outer shell 1 by bolts.

[0059] A plurality of temperature control partitions 4 and fire extinguishing partitions 3 are inserted inside the shell 1. The temperature control partitions 4 are arranged at intervals in the longitudinal direction. A fire extinguishing partition 3 is provided between two adjacent temperature control partitions 4 in the transverse direction. The fire extinguishing partitions 3 and the temperature control partitions 4 divide the inside of the shell 1 into a plurality of independent grids, and a lead-acid battery 15 is provided inside each grid.

[0060] The temperature control baffle 4 is filled with phase change energy storage material. Since the optimal operating temperature of the lead-acid battery 15 is about 30°C, the phase change energy storage material inside the temperature control baffle 4 is sodium nitrate decahydrate or calcium chloride hexahydrate. The melting point of sodium nitrate decahydrate (NaNO3·10H2O) is about 31.5°C, and the melting point of calcium chloride hexahydrate (CaCl2·6H2O) is about 29.8°C. Both are low in cost and convenient for large-scale application. They have high chemical stability and maintain stable chemical properties during melting and solidification. At the same time, they have high latent heat and can effectively store and release heat.

[0061] Depend on Figure 8 As shown, the bottom plate 2 is provided with a plurality of parallel and spaced liquid channels 201 , a liquid discharge channel 202 , and a liquid inlet channel 203 . Two adjacent liquid channels 201 are connected to the liquid discharge channel 202 and the liquid inlet channel 203 , respectively.

[0062] The bottom of the temperature control baffle 4 is connected through two tubes 405 , and the two tubes 405 are respectively connected through two adjacent liquid channels 201 , ensuring that the same temperature control baffle 4 is connected through both the drainage channel 202 and the inlet channel 203 .

[0063] A heat exchange assembly is fixed to the outside of the housing 1, and the ends of the liquid discharge channel 202 and the liquid inlet channel 203 are respectively connected to the heat exchange assembly through pipelines.

[0064] The heat exchange assembly comprises a heat exchange device, the exterior of which is abutted against a heat exchange tube 9, both ends of which are connected to a liquid discharge channel 202 and a liquid inlet channel 203 through pipelines, and a liquid pump 7 is provided on the pipeline.

[0065] In order to realize the functions of heating and cooling, in this embodiment, Fig.15 As shown, the heat exchange device is a semiconductor refrigeration sheet group 13, and the semiconductor refrigeration sheet group 13 includes a plurality of semiconductor refrigeration sheets. A heat exchange tube 9 is respectively abutted on both sides of the semiconductor refrigeration sheet group 13, and the heat exchange tube 9 adopts a serpentine coil. The two heat exchange tubes 9 are respectively abutted with the cooling end and the heat dissipation end of the semiconductor refrigeration sheet group 13 through heat conductive glue. Therefore, it is possible to achieve cooling by one heat exchange tube 9 and heating by one heat exchange tube 9.

[0066] The semiconductor refrigeration plate group 13 and the heat exchange tube 9 are arranged together inside the cover shell 14, and the cover shell 14 is fixedly connected to the outer wall of the outer shell 1.

[0067] One end of the two heat exchange tubes 9 is connected to the liquid inlet header 8, and the other end is connected to the liquid discharge header 10. The liquid inlet header 8 is connected to the liquid replenishment pipe 801 and the liquid inlet main pipe 6, and the liquid inlet main pipe 6 is connected to the liquid inlet pipeline 203 through the liquid inlet joint 5. The liquid pump 7 is arranged on the liquid inlet main pipe 6.

[0068] The baffle 11 is rotatably connected to the through connection between the drainage manifold 10 and the two heat exchange tubes 9. The rotating shaft of the baffle 11 is located between the through connection ports of the two heat exchange tubes 9. The end of the rotating shaft of the baffle 11 is passed through the outside of the drainage manifold 10 and is connected to a motor 12. After the baffle 11 rotates, the end portion abuts against the inner wall of one end of the drainage manifold 10, and after abutting, the through connection port of one heat exchange tube 9 is blocked, and the drainage manifold 10 is through-connected with the drainage channel 202.

[0069] A temperature sensor is provided inside the drainage channel 202 or the drainage manifold 10, and the temperature sensor is electrically connected to the motor 12 through a control module. The temperature sensor detects the temperature to control the rotation direction of the baffle 11, so that the refluxed phase change energy storage material can choose which heat exchange tube 9 to flow into, and whether to heat or cool the phase change energy storage material.

[0070] Depend on Fig.13 As shown, the temperature control baffle 4 includes a second shell 401, a vertical plate 404 is provided in the middle of the second shell 401, the upper end of the vertical plate 404 is spaced apart from the top of the second shell 401, two tubes 405 are provided on both sides of the vertical plate 404, a sealing seat 407 is provided at the through connection between the tube 405 and the second shell 401, a guide rod 408 is coaxially fixedly connected above the sealing seat 407, a first spring 409 is sleeved on the guide rod 408, a spring seat 410 is provided inside the second shell 401, the guide rod 408 passes through the spring seat 401, and the upper end of the first spring 409 abuts against the bottom surface of the spring seat 410.

[0071] The bottom plate 2 is provided with a plurality of first plug holes 204 which are connected to the liquid channel 201 . A vertically arranged push rod 205 is fixed inside the first plug hole 204 . The push rod 205 is connected with the sealing seat 407 .

[0072] The tube 405 is inserted into the first insertion hole 204, and the top rod 205 pushes up the sealing seat 407, so that the tube 405 is connected with the inside of the second shell 401, which is convenient for the phase change energy storage material to flow.

[0073] In order to open completely, a pin 406 is fixed at the bottom of the sealing seat 407, and the pin 406 is arranged corresponding to the pin 205. When all the temperature control baffles 4 are installed, the internal chamber of the temperature control baffle 4, the liquid channel 201, the drainage channel 202, the liquid inlet channel 203 and the heat exchange assembly form a closed flow chamber. Then the liquid phase change energy storage material is injected through the liquid distribution pipe 801, and the phase change energy storage material flows inside the closed flow chamber without leakage.

[0074] The bottom surface of the top plate 16 is concavely provided with a positioning groove 1602, the top of the fire extinguishing partition 3 is convexly provided with a first positioning strip 303, the top of the temperature control partition 4 is convexly provided with a second positioning strip 402, and the first positioning strip 303 and the second positioning strip 402 are inserted into the positioning groove 1602.

[0075] A positioning hole 206 is concavely provided on the bottom plate 2 , and a positioning pin 304 is convexly provided on the bottom of the fire extinguishing partition 3 , and the positioning pin 304 is inserted into the positioning hole 206 .

[0076] The housing 1 has a recessed slot 101 inside, the side wall of the fire extinguishing partition 3 has a first convex plate 302 convexly disposed thereon, and the side wall of the temperature control partition 4 has a second convex plate 403 convexly disposed thereon.

[0077] Depend on Figure 4 As shown, the first convex plate 302 of the fire extinguishing partition 3 abutting against the inner wall of the shell 1 is inserted into the corresponding slot 101, and the second convex plate 403 of the temperature control partition 4 abutting against the inner wall of the shell 1 is inserted into the corresponding slot 101. The first convex plates 302 between two adjacent fire extinguishing partitions 3 abut against each other, and a groove is formed between the two first convex plates 302 and the first shells 301 of the two fire extinguishing partitions 3, and the second convex plate 403 of the temperature control partition 4 is inserted into the corresponding groove.

[0078] Depend on Figure 20 to Figure 24 As shown, the top plate 16 is provided with a plurality of connection components inside, through which all the lead-acid batteries 15 inside the housing 1 are connected in series, and the top plate 16 is externally connected with two power terminals 24, which are electrically connected to the power connection posts 1501 at both ends of the lead-acid batteries 15 connected in series.

[0079] The bottom surface of the top plate 16 is recessed with a second socket 1601, and the connecting assembly includes a conductive sleeve 22 and a conductive plate 23. The conductive sleeve 22 is inserted into the second socket 1601, and the conductive plate 23 electrically connects the two conductive sleeves 22 that are matched and connected to each other. The connecting post 1501 of the lead-acid battery 15 is inserted into the second socket 1601, and the connecting post 1501 is electrically connected to the conductive sleeve 22.

[0080] If one of the lead-acid batteries 15 catches fire, it is necessary to quickly isolate the lead-acid battery 15 from the other lead-acid batteries 15 and disconnect them. To achieve this purpose, the connection assembly also includes a second heat conducting plate 17, a third heat conducting plate 18, a second temperature bag 19, a power connection plate 20 and a second spring 21. Each connection assembly includes two conductive plates 23 and a conductive sleeve 22 electrically connected to the two conductive plates 23. The two conductive plates 23 are arranged at intervals. A spring cavity 1603 is provided inside the top plate 16, and the second spring 21 is arranged inside the spring cavity 1603. The power connection plate 20 is arranged above the second spring 21 and slides up and down inside the spring cavity 1603.

[0081] The telescopic rod of the second temperature bag 19 is arranged downward, and the end of the telescopic rod is fixedly connected to the power board 20. The third heat conducting plate 18 is sleeved on the outside of the second temperature bag 19, and the third heat conducting plate 18 is connected to the second heat conducting plate 17. The second heat conducting plate 17 is arranged at the bottom of the top plate 16, and each lead-acid battery 15 corresponds to a second heat conducting plate 17.

[0082] In the normal temperature range, the telescopic rod of the second temperature bag 19 does not move, and under the push of the second spring 21, the power board 20 abuts against the bottom surfaces of the two conductive plates 23, and the two conductive plates 23 are electrically connected through the power board 20. When the corresponding lead-acid battery 15 catches fire, the temperature rises, and the second temperature bag 19 is heated through the second heat conducting plate 17 and the third heat conducting plate 18, the telescopic rod is extended, the power board 20 moves down, and the two conductive plates 23 are disconnected, so that the corresponding lead-acid battery 15 is isolated.

[0083] In order to quickly control the fire, Fig.11 As shown, the first shell 301 is filled with fire extinguishing materials, mainly dry powder or carbon dioxide fire extinguishing agent. A plurality of first through holes 305 are arranged vertically at intervals on the outer wall of the first shell 301, and a push plate 308 is abutted against the inner wall of the first shell 301. The push plate 308 is provided with second through holes 3081, and the second through holes 3081 are arranged vertically and staggered with the first through holes 305. The push plate 308 slides up and down along the guide rail 309.

[0084] The bottom of the push plate 308 is fixedly connected to the telescopic rod of the first temperature package 307. A first heat conducting plate 306 is provided on the outer wall of the first shell 301, and the first heat conducting plate 306 is connected to the first temperature package 307. A packing hole is provided on the top of the first shell 301, and a sealing cover 310 is provided on the packing hole.

[0085] The first heat conducting plate 306 corresponds to the lead-acid battery 15. When the lead-acid battery 15 burns, the first temperature bag 307 heats up, the telescopic rod moves upward, the first through hole 305 is connected with the second through hole 3081, and the high-pressure fire extinguishing agent inside the first shell 301 is sprayed out through the two through holes to control the fire of the corresponding lead-acid battery 15.

[0086] The implementation methods of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

1. A lead-acid battery isolation device with phase change energy storage material, characterized in that: The box body comprises an outer shell (1), a bottom plate (2) and a top plate (16), wherein a plurality of temperature control partitions (4) are inserted inside the outer shell (1), and the temperature control partitions (4) are filled with phase change energy storage material; The bottom plate (2) is provided with a plurality of parallel and spaced liquid channels (201), a liquid discharge channel (202) and a liquid inlet channel (203) inside, and two adjacent liquid channels (201) are respectively connected to the liquid discharge channel (202) and the liquid inlet channel (203); The bottom of the temperature control baffle (4) is connected to two tubes (405), and the two tubes (405) are connected to two adjacent liquid channels (201) respectively; A heat exchange assembly is fixed to the outside of the housing (1), and the ends of the liquid discharge channel (202) and the liquid inlet channel (203) are respectively connected to the heat exchange assembly through pipelines.

2. A lead-acid battery isolation device with phase change energy storage material according to claim 1, characterized in that: The heat exchange assembly comprises a heat exchange device, the outside of which is abutted against a heat exchange tube (9), both ends of the heat exchange tube (9) are connected to a liquid discharge channel (202) and a liquid inlet channel (203) through pipelines, and a liquid pump (7) is provided on the pipeline.

3. A lead-acid battery isolation device with phase change energy storage material according to claim 2, characterized in that: The heat exchange device is a semiconductor refrigeration plate group (13), and two sides of the semiconductor refrigeration plate group (13) are respectively connected to a heat exchange tube (9), one end of the two heat exchange tubes (9) is connected to a liquid inlet header (8) and the other end is connected to a liquid discharge header (10); The liquid inlet manifold (8) is connected to a liquid inlet pipe (801) and a liquid inlet main pipe (6), the liquid inlet main pipe (6) is connected to a liquid inlet pipeline (203), and a liquid pump (7) is arranged on the liquid inlet main pipe (6); A baffle (11) is rotatably connected to the through connection between the drainage manifold (10) and the two heat exchange tubes (9); the rotating shaft of the baffle (11) is located between the through connection ports of the two heat exchange tubes (9); the end of the rotating shaft of the baffle (11) is passed through the outside of the drainage manifold (10) and is connected to a motor (12); after the baffle (11) rotates, the end portion abuts against the inner wall of one end of the drainage manifold (10), and after the abutment, the through connection port of one heat exchange tube (9) is blocked, and the drainage manifold (10) is through-connected with the drainage channel (202).

4. A lead-acid battery isolation device with phase change energy storage material according to any one of claims 1 or 3, characterized in that: The temperature control baffle (4) comprises a second shell (401), a vertical plate (404) is arranged in the middle of the second shell (401), the upper end of the vertical plate (404) is spaced apart from the top of the second shell (401), two tubes (405) are arranged on both sides of the vertical plate (404), a sealing seat (407) is arranged at the through connection between the tube (405) and the second shell (401), a guide rod (408) is coaxially fixedly connected above the sealing seat (407), a first spring (409) is sleeved on the guide rod (408), a spring seat (410) is arranged inside the second shell (401), the guide rod (408) passes through the spring seat (401), and the upper end of the first spring (409) abuts against the bottom surface of the spring seat (410); The bottom plate (2) is provided with a plurality of first plug holes (204) which are connected to the liquid channel (201). A vertically arranged push rod (205) is fixed inside the first plug hole (204). The push rod (205) is connected in cooperation with the sealing seat (407).

5. A lead-acid battery isolation device with phase change energy storage material according to any one of claims 1 or 3, characterized in that: The phase change energy storage material inside the temperature control partition (4) is sodium nitrate decahydrate or calcium chloride hexahydrate.

6. A lead-acid battery isolation device with phase change energy storage material according to claim 4, characterized in that: The temperature control partitions (4) are arranged at intervals in the longitudinal direction, and a fire extinguishing partition (3) is arranged between two temperature control partitions (4) adjacent to each other in the transverse direction. The fire extinguishing partition (3) and the temperature control partition (4) divide the interior of the housing (1) into a plurality of independent grids, and a lead-acid battery (15) is arranged in each grid.

7. A lead-acid battery isolation device with phase change energy storage material according to claim 6, characterized in that: The top plate (16) is provided with a plurality of connection components inside, and all the lead-acid batteries (15) inside the housing (1) are connected in series through the connection components. The top plate (16) is externally connected to two power terminals (24), and the power terminals (24) are electrically connected to power posts (1501) at both ends of the series-connected lead-acid batteries (15).

8. A lead-acid battery isolation device with phase change energy storage material according to claim 6, characterized in that: The bottom surface of the top plate (16) is concavely provided with a positioning groove (1602), the top of the fire extinguishing partition (3) is convexly provided with a first positioning strip (303), the top of the temperature control partition (4) is convexly provided with a second positioning strip (402), and the first positioning strip (303) and the second positioning strip (402) are inserted into the positioning groove (1602).

9. A lead-acid battery isolation device with phase change energy storage material according to claim 8, characterized in that: A positioning hole (206) is concavely provided on the bottom plate (2), and a positioning pin (304) is convexly provided on the bottom of the fire extinguishing partition (3), and the positioning pin (304) is inserted into the positioning hole (206).

10. A lead-acid battery isolation device with phase change energy storage material according to any one of claims 7 to 9, characterized in that: The bottom surface of the top plate (16) is recessed with a second plug hole (1601), the connection assembly comprises a conductive sleeve (22) and a conductive plate (23), the conductive sleeve (22) is inserted into the second plug hole (1601), the conductive plate (23) electrically connects the two conductive sleeves (22) that are matched and connected to each other, the connection post (1501) of the lead-acid battery (15) is inserted into the second plug hole (1601), and the connection post (1501) is electrically connected to the conductive sleeve (22).

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