A solid-state battery component and a battery protection device

Abstract

The present invention relates to the technical field of solid-state batteries, and discloses a solid-state battery assembly and a battery protection device. The battery protection device includes a ventilation unit. The ventilation unit includes a protection box. A ventilation mechanism is provided at the bottom of the protection box. The ventilation mechanism includes an air inlet and an air outlet. The air inlet and the air outlet are opened at the bottom of the protection box. The ventilation mechanism further includes a ventilation groove and a diversion plate provided at the bottom of the protection box; a sealing unit, the sealing unit includes side substrates, and support mechanisms are provided on both sides of the side substrates; an unlocking unit, the unlocking unit includes a fixed substrate and a mounting mechanism, and the unlocking unit further includes an unlocking mechanism for separating the fixed substrate and the side substrates. By providing the air inlet and the air outlet, heat dissipation is carried out inside the protection box to prevent the temperature of the battery body from being too high. The closable diversion plate and the sealing plate are provided to seal the protection box in case of battery fire, so that the flame can be extinguished in an oxygen-deficient environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of solid-state batteries, and specifically, relates to a solid-state battery assembly and a battery protection device. Background Art

[0002] The solid-state battery of a tricycle is usually installed under the seat. At the same time, a storage layer is provided between the battery and the seat. The air-insulated design of the storage layer makes it impossible for the driver to immediately detect the temperature generated when the battery catches fire, which is likely to cause property losses.

[0003] The patent application with the authorization announcement number CN212587575U discloses a battery high-temperature protection structure for an electric tricycle, including a protection box, welding posts, and a cover plate. The welding posts are located at the upper and lower ends on the left side of the cross-section of the protection box, and the welding posts are fixedly connected to the protection box. Through the improvement of the structure, this battery high-temperature protection structure for an electric tricycle has a good heat dissipation effect on the battery during actual use, enabling the high temperature generated by the battery during the long-term operation of the electric tricycle to be effectively discharged, reducing the possibility of the battery being burned out, increasing the service life of the battery of the electric tricycle, being beneficial to actual use, and the improved battery high-temperature protection structure of the electric tricycle can effectively control the temperature of the battery, avoiding the continuous operation of the battery even when the battery temperature exceeds the standard, reducing the damage speed of the battery, and being highly practical during actual use.

[0004] However, this technical solution still has at least the following defects: Although this high-temperature protection structure can ventilate and dissipate heat from the battery, in addition to the high-temperature environment, the battery may catch fire due to factors such as open circuit or moisture. When the battery catches fire, this structure will also make it difficult to control the fire. Therefore, the above solution cannot effectively implement the rescue measures after the fire. In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a solid-state battery assembly and a battery protection device. By setting an air inlet and an air outlet to dissipate heat inside the protection box, the temperature of the battery body is prevented from being too high. At the same time, a closable flow guide plate and a sealing plate are provided, which can close the protection box when the battery catches fire, so that the flame can be extinguished in an oxygen-deficient environment; by setting an unlocking mechanism, the protection box is separated from the tricycle body, thereby avoiding further damage to the vehicle body circuit caused by high temperature.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0007] A battery protection device, comprising:

[0008] Ventilation unit, the ventilation unit includes a protective box, a ventilation mechanism is provided at the bottom of the protective box, the ventilation mechanism includes an air inlet and an air outlet, the air inlet and the air outlet are opened at the bottom of the protective box, and the ventilation mechanism further includes a ventilation groove and a flow guide plate provided at the bottom of the protective box;

[0009] Sealing unit, the sealing unit includes a side substrate, support mechanisms are provided on both sides of the side substrate, and the side substrate supports the protective box through the support mechanisms;

[0010] Unlocking unit, the unlocking unit includes a fixed substrate and an installation mechanism, the installation mechanism is used to install the fixed substrate and the side substrate, and the unlocking unit further includes an unlocking mechanism, the unlocking mechanism is used to separate the fixed substrate and the side substrate.

[0011] As a preferred embodiment of the present invention, the ventilation mechanism further includes a side baffle rotatably installed at the bottom of the protective box, a torsion spring is installed between the side baffle and the protective box, a pressing mechanism is provided at one end of the side baffle, the pressing mechanism is used to drive the side baffle to rotate, a channel is formed between the side baffle and the flow guide plate so that air flow can enter the air inlet and the ventilation groove simultaneously when passing through, a sealing plate is movably installed on the ventilation groove, and the ventilation mechanism further includes a partition installed at the bottom of the inner wall of the protective box, and the partition is used to block the passage between the air inlet and the air outlet at the bottom of the protective box.

[0012] As a preferred embodiment of the present invention, the pressing mechanism includes a power assembly, a guide frame is provided at the bottom of the power assembly, a connecting frame is fixedly installed at the bottom of the guide frame, a protrusion is provided at the bottom of the connecting frame, and a convex rod is fixedly installed at one end of the side baffle, and the position of the convex rod is aligned with that of the protrusion;

[0013] The power assembly includes an electric slide rail and an electric slide table connected to each other, the electric slide rail is installed on one side of the protective box, and the electric slide table is movably connected to the guide frame.

[0014] As a preferred embodiment of the present invention, the support mechanism includes a positioning rod fixedly connected to the protective box, a first spring is movably sleeved on the positioning rod, the support mechanism further includes a support member, and a fixing plate is rotatably installed on one side of the support member, and the fixing plate is fixedly connected to the side substrate.

[0015] As a preferred embodiment of the present invention, a first groove is formed in the side substrate, and the sealing unit further includes a pulling mechanism located in the first groove. The pulling mechanism includes a first connecting plate and a second connecting plate, which are rotatably connected. One end of the second connecting plate is movably inserted into the support member. One end of the first connecting plate is rotatably installed with a slider, and a first sliding rod is movably inserted into the slider. The first sliding rod is fixedly connected to the side substrate. A connecting block is rotatably installed at the bottom of the first connecting plate, and a second sliding rod is movably inserted into the connecting block. The second sliding rod is fixedly connected to the side substrate. An adjusting mechanism is arranged at the bottom of the first connecting plate for driving the first connecting plate.

[0016] As a preferred embodiment of the present invention, the adjusting mechanism includes a rotating shaft, on which a guiding block is fixedly installed. A blocking post is fixedly connected to one side of the connecting block, and the blocking post is adapted to the guiding block. The rotating shaft is rotatably connected to the side substrate. One end of the rotating shaft is fixedly installed with a first gear, and a first toothed plate is meshed with the bottom of the first gear. A connecting member is fixedly installed on one side of the first toothed plate, and a sliding rail is fixedly installed at one end of the connecting member. A convex post is installed on the sliding rail. An inclined sliding groove is formed in the connecting frame, and the convex post is movably connected to the inclined sliding groove. A cover plate is slidably connected to the sliding rail, and the cover plate is fixedly connected to the protective box.

[0017] As a preferred embodiment of the present invention, a connecting shaft is fixedly installed on one side of the flow guiding plate, and the sealing unit further includes a falling mechanism. The falling mechanism includes a first support rod and a second support rod, both of which are fixedly installed at the end of the connecting shaft. A second groove is formed on one side of the side substrate, and the first support rod and the second support rod are both movably connected to the second groove. A third support rod is rotatably connected to one side of the side substrate, and the third support rod is adapted to the first support rod. A blocking rod is also rotatably installed on the side substrate, and one end of the blocking rod is adapted to the third support rod. A bottom plate is fixedly installed at the bottom of the side substrate.

[0018] As a preferred embodiment of the present invention, the installation mechanism includes a fixed substrate, on which a fixed seat is installed, and a support column is movably installed on the fixed seat. The installation mechanism further includes an installation member, and the support column is movably inserted into the installation member. The unlocking unit further includes a pushing mechanism, which includes a bearing plate, and push columns are fixedly installed at both ends of the bearing plate, and the push columns are aligned with the support column.

[0019] As a preferred embodiment of the present invention, the unlocking mechanism includes a support shaft, on which a second gear is fixedly installed. A second toothed plate is meshed and connected to one side of the second gear, and the second toothed plate is fixedly connected to the side substrate. A cam is also fixedly installed on the support shaft. A push rod is arranged on one side of the cam, and the push rod is fixedly connected to the bearing plate. A limiting rod is movably inserted into the bearing plate, and both ends of the limiting rod are fixedly connected to the side substrate and the mounting member respectively. A second spring is movably sleeved on the limiting rod, and both ends of the second spring are fixedly connected to the mounting member and the bearing plate respectively. Tie rods are rotatably installed at both ends of the support shaft, and the bottom of the tie rods extends to the bottom of the protection box.

[0020] A solid-state battery assembly is installed in the battery protection device described above, and includes a battery body, on which a sensor is installed. The sensor is used to detect the temperature inside the protection box, and the sensor is electrically connected to the electric slide rail and the electric slide table.

[0021] The present invention has the following beneficial effects compared with the prior art:

[0022] The present invention dissipates heat inside the protection box by setting an air inlet and an air outlet, avoiding the temperature of the battery body from being too high. At the same time, a closable deflector and a sealing plate are provided, which can close the protection box when the battery catches fire, so that the flame can be extinguished in an oxygen-deficient environment;

[0023] The present invention separates the protection box from the tricycle body by setting an unlocking mechanism, thereby avoiding further damage to the vehicle body circuit caused by high temperature. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of a battery protection device of the present invention;

[0025] Figure 2 It is a schematic diagram of the outer structure of the protection box of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure at the deflector of the present invention;

[0027] Figure 4 It is a schematic diagram of the bottom structure of the protection box of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure at the inclined chute of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure at the connecting frame of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure at the connecting member of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure at the guiding block of the present invention;

[0032] Figure 9 Schematic diagram of the internal structure of the side substrate of the present invention;

[0033] Figure 10 Schematic diagram of the structure at the first support rod of the present invention;

[0034] Figure 11 Schematic diagram of the structure at the retaining rod of the present invention;

[0035] Figure 12 Schematic diagram of the structure at the mounting member of the present invention;

[0036] Figure 13 Schematic diagram of the structure at the cam of the present invention;

[0037] Figure 14 Schematic diagram of the structure at the support column of the present invention;

[0038] Figure 15 Schematic diagram of the structure of the battery body of the present invention.

[0039] Reference numerals:

[0040] 100, protective box; 101, partition board; 102, air inlet; 103, air outlet; 104, ventilation groove; 105, sealing plate; 106, deflector; 107, side baffle; 108, torsion spring; 109, convex rod; 110, electric slide rail; 111, electric slide table; 112, guide frame; 113, connecting frame;

[0041] 200, side substrate; 201, fixing plate; 202, support member; 203, positioning rod; 204, first spring; 205, first groove; 206, first slide bar; 207, slider; 208, first connecting plate; 209, second connecting plate; 210, connecting block; 211, second slide bar; 212, retaining column; 213, rotating shaft; 214, guide block; 215, first gear; 216, first toothed plate; 217, connecting member; 218, slide rail; 219, convex column; 220, inclined chute; 221, cover plate; 222, bottom plate;

[0042] 300, connecting shaft; 301, first support rod; 302, second support rod; 303, second groove; 304, third support rod; 305, retaining rod;

[0043] 400, mounting member; 401, limiting rod; 402, second spring; 403, bearing plate; 404, push column; 405, push rod; 406, cam; 407, second gear; 408, second toothed plate; 409, support shaft; 410, pull rod; 411, fixed substrate; 412, fixed seat; 413, support column;

[0044] 500. Battery body; 501. Sensor. Detailed implementation manner

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0046] Embodiment 1

[0047] As Figures 1 to 15 shown, a battery protection device includes:

[0048] A ventilation unit, the ventilation unit includes a protection box 100, a ventilation mechanism is provided at the bottom of the protection box 100, the ventilation mechanism includes an air inlet 102 and an air outlet 103, the air inlet 102 and the air outlet 103 are opened at the bottom of the protection box 100, and the ventilation mechanism further includes a ventilation groove 104 and a diversion plate 106 provided at the bottom of the protection box 100;

[0049] A sealing unit, the sealing unit includes a side substrate 200, support mechanisms are provided on both sides of the side substrate 200, and the side substrate 200 supports the protection box 100 through the support mechanisms;

[0050] An unlocking unit, the unlocking unit includes a fixed substrate 411 and an installation mechanism for installing the fixed substrate 411 and the side substrate 200, and the unlocking unit further includes an unlocking mechanism for separating the fixed substrate 411 and the side substrate 200.

[0051] As Figures 1 to 5 shown, in the detailed implementation manner, the ventilation mechanism further includes a side baffle 107 rotatably installed at the bottom of the protection box 100, a torsion spring 108 is installed between the side baffle 107 and the protection box 100, a pressing mechanism is provided at one end of the side baffle 107 for driving the side baffle 107 to rotate, a channel is formed between the side baffle 107 and the diversion plate 106 so that when air flows through, it enters the air inlet 102 and the ventilation groove 104 at the same time. A sealing plate 105 is movably installed on the ventilation groove 104, and the ventilation mechanism further includes a partition plate 101 installed at the bottom of the inner wall of the protection box 100 for blocking the passage of the air inlet 102 and the air outlet 103 at the bottom of the protection box 100. In this setting, when the battery body 500 is installed in the protection box 100, the battery body 500 and the partition plate 101 form a blocking structure so that air flow cannot pass through and spread to the entire protection box 100. When air flows through the ventilation groove 104, due to the relatively fast air flow rate at the ventilation groove 104, the generated pressure attracts the air in the protection box 100 to achieve the removal of hot air.

[0052] As Figures 5 to 6As shown, further, the pressing mechanism includes a power assembly. A guide frame 112 is provided at the bottom of the power assembly. A connecting frame 113 is fixedly installed at the bottom of the guide frame 112. A protrusion is provided at the bottom of the connecting frame 113. A convex rod 109 is fixedly installed at one end of the side baffle 107. The position of the convex rod 109 is aligned with that of the protrusion.

[0053] The power assembly includes an electric slide rail 110 and an electric slide table 111 which are connected to each other. The electric slide rail 110 is installed on one side of the protective box 100. The electric slide table 111 is movably connected to the guide frame 112. In this setting, the electric slide table 111 drives the guide frame 112 to move downward. The guide frame 112 drives the connecting frame 113 to descend. The connecting frame 113 drives the side baffle 107 to rotate by abutting against the convex rod 109.

[0054] Embodiment 2

[0055] As Figure 1 、 Figure 2 、 Figure 9 shown, in the specific implementation, the support mechanism includes a positioning rod 203. The positioning rod 203 is fixedly connected to the protective box 100. A first spring 204 is movably sleeved on the positioning rod 203. The support mechanism further includes a support member 202. A fixing plate 201 is rotatably installed on one side of the support member 202. The fixing plate 201 is fixedly connected to the side substrate 200. In this setting, the first spring 204 supports the protective box 100 and plays a buffering role at the same time.

[0056] As Figures 8 to 9 shown, further, a first groove 205 is formed in the side substrate 200. The sealing unit further includes a pulling mechanism. The pulling mechanism is located in the first groove 205. The pulling mechanism includes a first connecting plate 208 and a second connecting plate 209. The first connecting plate 208 and the second connecting plate 209 are rotatably connected. One end of the second connecting plate 209 is movably inserted into the support member 202. One end of the first connecting plate 208 is rotatably installed with a slider 207. A first slide rod 206 is movably inserted into the slider 207. The first slide rod 206 is fixedly connected to the side substrate 200. A connecting block 210 is rotatably installed at the bottom of the first connecting plate 208. A second slide rod 211 is movably inserted into the connecting block 210. The second slide rod 211 is fixedly connected to the side substrate 200. An adjusting mechanism is provided at the bottom of the first connecting plate 208. The adjusting mechanism is used to drive the first connecting plate 208. In this setting, the connecting block 210 drives the first connecting plate 208 to move. The first connecting plate 208 drives the second connecting plate 209 to move, so that the second connecting plate 209 is separated from the support member 202. When the first connecting plate 208 moves, it drives the slider 207 to slide on the first slide rod 206.

[0057] As Figures 5 to 9As shown in the figure, further, the adjusting mechanism includes a rotating shaft 213. A guiding block 214 is fixedly installed on the rotating shaft 213. One side of the connecting block 210 is fixedly connected with a retaining post 212. The retaining post 212 is adapted to the guiding block 214. The rotating shaft 213 is rotatably connected to the side substrate 200. One end of the rotating shaft 213 is fixedly installed with a first gear 215. The bottom of the first gear 215 is meshed with a first toothed plate 216. One side of the first toothed plate 216 is fixedly installed with a connecting member 217. One end of the connecting member 217 is fixedly installed with a slide rail 218. A convex post 219 is installed on the slide rail 218. An inclined chute 220 is formed on the connecting frame 113. The convex post 219 is movably connected to the inclined chute 220. A cover plate 221 is slidably connected to the slide rail 218. The cover plate 221 is fixedly connected to the protection box 100. In this setting, while the connecting frame 113 moves, it drives the slide rail 218 to move to one side through the inclined chute 220 and the convex post 219. The slide rail 218 drives the first toothed plate 216 to move through the connecting member 217. The first toothed plate 216 drives the first gear 215 to rotate through meshing. The first gear 215 drives the rotating shaft 213 to rotate. The rotating shaft 213 drives the guiding block 214 to rotate. The guiding block 214 drives the retaining post 212 to move, so as to move the connecting block 210.

[0058] As Figures 10 to 11 shown in the figure, further, a connecting shaft 300 is fixedly installed on one side of the flow guiding plate 106. The sealing unit further includes a falling mechanism. The falling mechanism includes a first support rod 301 and a second support rod 302. Both the first support rod 301 and the second support rod 302 are fixedly installed at the end of the connecting shaft 300. A second groove 303 is formed on one side of the side substrate 200. Both the first support rod 301 and the second support rod 302 are movably connected to the second groove 303. A third support rod 304 is rotatably connected to one side of the side substrate 200. The third support rod 304 is adapted to the first support rod 301. A retaining rod 305 is also rotatably installed on the side substrate 200. One end of the retaining rod 305 is adapted to the third support rod 304. The bottom of the side substrate 200 is fixedly installed with a bottom plate 222. In this setting, under normal conditions, the first support rod 301 and the second support rod 302 are kept in a fixed state under the action of the second groove 303 and the third support rod 304, so as to keep the position of the flow guiding plate 106 unchanged.

[0059] Embodiment 3

[0060] As Figure 12 、 Figure 14As shown in the figure, in the specific implementation, the installation mechanism includes a fixed substrate 411, a fixed seat 412 is installed on the fixed substrate 411, a support column 413 is movably installed on the fixed seat 412, the installation mechanism further includes an installation part 400, the support column 413 is movably inserted into the installation part 400, the unlocking unit further includes a pushing mechanism, the pushing mechanism includes a bearing plate 403, push columns 404 are fixedly installed at both ends of the bearing plate 403, and the push columns 404 are aligned with the support column 413. In this setting, the fixed substrate 411 is connected to the vehicle body of the tricycle and is used to install the protection box 100 for placing the battery body 500.

[0061] As Figures 12 to 14 shown, further, the unlocking mechanism includes a support shaft 409, a second gear 407 is fixedly installed on the support shaft 409, a second toothed plate 408 is meshed and connected to one side of the second gear 407, the second toothed plate 408 is fixedly connected to the side substrate 200, a cam 406 is also fixedly installed on the support shaft 409, a push rod 405 is arranged on one side of the cam 406, the push rod 405 is fixedly connected to the bearing plate 403, a limiting rod 401 is movably inserted into the bearing plate 403, both ends of the limiting rod 401 are fixedly connected to the side substrate 200 and the installation part 400 respectively, a second spring 402 is movably sleeved on the limiting rod 401, both ends of the second spring 402 are fixedly connected to the installation part 400 and the bearing plate 403 respectively, pull rods 410 are rotatably installed at both ends of the support shaft 409, and the bottom of the pull rods 410 extends to the bottom of the protection box 100. In this setting, when the protection box 100 drops to the bottom, the protection box 100 drives the pull rods 410 to descend, the pull rods 410 drive the support shaft 409 to descend, the support shaft 409 drives the second gear 407 to descend, when the second gear 407 descends, it drives the cam 406 to rotate through meshing with the second toothed plate 408, when the cam 406 rotates, it abuts against the push rod 405, the push rod 405 drives the bearing plate 403 to move, the bearing plate 403 drives the push columns 404 to move, and the push columns 404 abut against the support column 413 so that the installation part 400 and the fixed seat 412 are separated.

[0062] Embodiment 4

[0063] As Figure 1 、 Figure 15 shown, a solid-state battery assembly is installed in the described battery protection device, and includes a battery body 500, a sensor 501 is installed on the battery body 500, the sensor 501 is used to detect the internal temperature of the protection box 100, and the sensor 501 is electrically connected to the electric slide rail 110 and the electric slide table 111. In this setting, when a fire occurs in the battery body 500, the temperature inside the protection box 100 rises rapidly. At this time, the sensor 501 detects the high temperature and sends a signal to make the electric slide rail 110 and the electric slide table 111 work.

[0064] The implementation principle of a battery protection device of this embodiment is as follows: when the three-wheeled electric vehicle is running, the airflow enters the air inlet 102 and the ventilation slot 104 through the guide plate 106. The airflow entering the air inlet 102 is blocked by the partition 101 and diffuses to the inner wall of the protection box 100, so that the hot air in the protection box 100 is accelerated to circulate and flows out from the air outlet 103. At the same time, the airflow entering the ventilation slot 104 is faster than the airflow in the protection box 100 when passing through the air outlet 103, so that the hot air in the protection box 100 is sucked out from the air outlet 103, thereby achieving heat dissipation of the protection box 100.

[0065] When the battery body 500 catches fire, the sensor 501 sends a signal and controls the electric slide rail 110 and the electric slide 111 to work. The electric slide 111 drives the guide frame 112 to move downward, and the guide frame 112 drives the connecting frame 113 to move downward. The connecting frame 113 drives the side baffle 107 to rotate by abutting against the protruding rod 109.

[0066] As the connecting frame 113 moves, the slide rail 218 is driven to move to one side through the inclined slide groove 220 and the boss 219. The slide rail 218 drives the first tooth plate 216 to move through the connecting member 217. The first tooth plate 216 drives the first gear 215 to rotate by meshing. The first gear 215 drives the rotating shaft 213 to rotate. The rotating shaft 213 drives the guide block 214 to rotate. The guide block 214 drives the blocking column 212 to move, so that the connecting block 210 moves. The connecting block 210 drives the first connecting plate 208 to move. The first connecting plate 208 drives the second connecting plate 209 to move, so that the second connecting plate 209 is separated from the support member 202. At this time, the bottom of the first spring 204 loses its support, causing the protective box 100 to fall.

[0067] When the protective box 100 falls, the bottom of the protective box 100 does not contact the connecting shaft 300. When the protective box 100 falls to contact the blocking rod 305, the blocking rod 305 is toggled to rotate so that the blocking rod 305 and the third support rod 304 are disengaged. At this time, the protective box 100 is against the connecting shaft 300 and drives the connecting shaft 300 to fall. When the connecting shaft 300 falls, the third support rod 304 rotates to one side under the action of the first support rod 301. At the same time, the second support rod 302 and the second groove 303 cause the connecting shaft 300 to rotate. When the protective box 100 completely falls on the bottom plate 222, the bottom plate 222 presses against the guide plate 106 to close it. At this time, the air inlet 102 is blocked. At the same time, the bottom plate 222 presses against the sealing plate 105 to block the air outlet 103. At this time, the protective box 100 is in a closed state, and the internal environment gradually dies out due to lack of oxygen.

[0068] When the protective box 100 drops to the bottom, the protective box 100 drives the pull rod 410 to descend, the pull rod 410 drives the support shaft 409 to descend, the support shaft 409 drives the second gear 407 to descend, and while the second gear 407 descends, it drives the cam 406 to rotate through meshing with the second toothed plate 408. When the cam 406 rotates, it abuts against the push rod 405, the push rod 405 drives the bearing plate 403 to move, the bearing plate 403 drives the push column 404 to move, and the push column 404 abuts against the support column 413, so that the mounting member 400 and the fixed seat 412 are separated. At this time, the protective box 100 and part of the side base plate 200 as a whole descend and are separated from the electric vehicle body, avoiding damage to the vehicle body circuit caused by high temperature.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A battery protection device, characterized in that, Comprising: A ventilation unit, the ventilation unit includes a protective box (100), a ventilation mechanism is provided at the bottom of the protective box (100), the ventilation mechanism includes an air inlet (102) and an air outlet (103), the air inlet (102) and the air outlet (103) are opened at the bottom of the protective box (100), and the ventilation mechanism further includes a ventilation groove (104) and a guide plate (106) provided at the bottom of the protective box (100); A sealing unit, the sealing unit includes a side substrate (200), support mechanisms are provided on both sides of the side substrate (200), and the side substrate (200) supports the protective box (100) through the support mechanisms; An unlocking unit, the unlocking unit includes a fixed substrate (411) and a mounting mechanism, the mounting mechanism is used to mount the fixed substrate (411) and the side substrate (200), and the unlocking unit further includes an unlocking mechanism, the unlocking mechanism is used to separate the fixed substrate (411) and the side substrate (200); The ventilation mechanism further includes a side baffle (107) rotatably mounted at the bottom of the protective box (100), a torsion spring (108) is installed between the side baffle (107) and the protective box (100), a pressing mechanism is provided at one end of the side baffle (107), the pressing mechanism is used to drive the side baffle (107) to rotate, and the side baffle (107) and the guide plate (106) form a channel so that when air flows through, it enters the air inlet (102) and the ventilation groove (104) at the same time. A sealing plate (105) is movably mounted on the ventilation groove (104), and the ventilation mechanism further includes a partition plate (101) installed at the bottom of the inner wall of the protective box (100), and the partition plate (101) is used to block the passage between the air inlet (102) and the air outlet (103) at the bottom of the protective box (100).

2. The battery protection device according to claim 1, characterized in that, The pressing mechanism includes a power component, a guide frame (112) is provided at the bottom of the power component, a connecting frame (113) is fixedly installed at the bottom of the guide frame (112), a protrusion is provided at the bottom of the connecting frame (113), and a convex rod (109) is fixedly installed at one end of the side baffle (107), and the position of the convex rod (109) is aligned with the protrusion; The power component includes an electric slide rail (110) and an electric slide table (111) connected to each other, the electric slide rail (110) is installed on one side of the protective box (100), and the electric slide table (111) is movably connected to the guide frame (112).

3. The battery protection device according to claim 2, characterized in that, The support mechanism includes a positioning rod (203), the positioning rod (203) is fixedly connected to the protective box (100), a first spring (204) is movably sleeved on the positioning rod (203), and the support mechanism further includes a support member (202), a fixing plate (201) is rotatably installed on one side of the support member (202), and the fixing plate (201) is fixedly connected to the side substrate (200).

4. The battery protection device according to claim 3, wherein, A first groove (205) is formed in the side substrate (200). The sealing unit further includes a pulling mechanism which is located in the first groove (205). The pulling mechanism includes a first connecting plate (208) and a second connecting plate (209). The first connecting plate (208) and the second connecting plate (209) are rotatably connected. One end of the second connecting plate (209) is movably inserted into the support member (202). One end of the first connecting plate (208) is rotatably installed with a slider (207). A first slide rod (206) is movably inserted into the slider (207). The first slide rod (206) is fixedly connected to the side substrate (200). A connecting block (210) is rotatably installed at the bottom of the first connecting plate (208). A second slide rod (211) is movably inserted into the connecting block (210). The second slide rod (211) is fixedly connected to the side substrate (200). An adjusting mechanism is arranged at the bottom of the first connecting plate (208) and is used to drive the first connecting plate (208).

5. A battery protection device according to claim 4, characterized in that, The adjusting mechanism includes a rotating shaft (213). A guiding block (214) is fixedly installed on the rotating shaft (213). A retaining post (212) is fixedly connected to one side of the connecting block (210). The retaining post (212) is adapted to the guiding block (214). The rotating shaft (213) is rotatably connected to the side substrate (200). A first gear (215) is fixedly installed at one end of the rotating shaft (213). A first toothed plate (216) is meshed and connected to the bottom of the first gear (215). A connecting member (217) is fixedly installed on one side of the first toothed plate (216). A slide rail (218) is fixedly installed at one end of the connecting member (217). A convex post (219) is installed on the slide rail (218). An inclined chute (220) is formed in the connecting frame (113). The convex post (219) is movably connected to the inclined chute (220). A cover plate (221) is slidably connected to the slide rail (218). The cover plate (221) is fixedly connected to the protective box (100).

6. The battery protection device according to claim 5, wherein, A connecting shaft (300) is fixedly installed on one side of the flow guiding plate (106). The sealing unit further includes a falling mechanism. The falling mechanism includes a first support rod (301) and a second support rod (302). Both the first support rod (301) and the second support rod (302) are fixedly installed at the end of the connecting shaft (300). A second groove (303) is formed on one side of the side substrate (200). Both the first support rod (301) and the second support rod (302) are movably connected to the second groove (303). A third support rod (304) is rotatably connected to one side of the side substrate (200). The third support rod (304) is adapted to the first support rod (301). A stop rod (305) is also rotatably installed on the side substrate (200). One end of the stop rod (305) is adapted to the third support rod (304). A bottom plate (222) is fixedly installed at the bottom of the side substrate (200).

7. A battery protection device according to claim 6, characterized in that, The installation mechanism includes a fixed substrate (411), a fixed seat (412) is installed on the fixed substrate (411), a support column (413) is movably installed on the fixed seat (412), the installation mechanism further includes a mounting member (400), the support column (413) is movably inserted into the mounting member (400), the unlocking unit further includes a pushing mechanism, the pushing mechanism includes a bearing plate (403), push columns (404) are fixedly installed at both ends of the bearing plate (403), and the push columns (404) are aligned with the support column (413).

8. The battery protection device according to claim 7, characterized in that, The unlocking mechanism includes a support shaft (409), a second gear (407) is fixedly installed on the support shaft (409), a second toothed plate (408) is meshed and connected to one side of the second gear (407), the second toothed plate (408) is fixedly connected to the side substrate (200), a cam (406) is also fixedly installed on the support shaft (409), a push rod (405) is arranged on one side of the cam (406), the push rod (405) is fixedly connected to the bearing plate (403), a limiting rod (401) is movably inserted into the bearing plate (403), both ends of the limiting rod (401) are fixedly connected to the side substrate (200) and the mounting member (400) respectively, a second spring (402) is movably sleeved on the limiting rod (401), both ends of the second spring (402) are fixedly connected to the mounting member (400) and the bearing plate (403) respectively, pull rods (410) are rotatably installed at both ends of the support shaft (409), and the bottom of the pull rods (410) extends to the bottom of the protection box (100).

9. A solid-state battery component is installed in a battery protection device according to any one of claims 1-8, characterized in that, It includes a battery body (500), a sensor (501) is installed on the battery body (500), the sensor (501) is used to detect the internal temperature of the protection box (100), and the sensor (501) is electrically connected to the electric slide rail (110) and the electric slide table (111).

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