Solid-state battery assembly and battery protection device

Abstract

The 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 comprises a ventilation unit, the ventilation unit comprises a protection box, a ventilation mechanism is arranged at the bottom of the protection box, and the ventilation mechanism comprises an air inlet and an air outlet; the air inlet and the air outlet are formed in the bottom of the protection box. The ventilation mechanism further comprises a ventilation groove and a flow guide plate which are arranged at the bottom of the protection box. The sealing unit comprises a side base plate, and supporting mechanisms are arranged on the two sides of the side base plate; the unlocking unit comprises a fixed base plate and a mounting mechanism, the unlocking unit further comprises an unlocking mechanism, and the unlocking mechanism is used for separating the fixed base plate from the side base plate; the air inlet and the air outlet are arranged to dissipate heat in the protection box, the temperature of the battery body is prevented from being too high, and the closable flow guide plate and the sealing plate are arranged, so that the protection box can be closed when the battery is on fire, and flames are extinguished in an oxygen-deficient environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of solid-state batteries, and in particular, 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, and a storage layer is provided between the battery and the seat. The air-insulated design of the storage layer means that when the battery catches fire, the temperature generated cannot be immediately detected by the driver, which may easily cause property damage.

[0003] The patent application with the authorization announcement number CN212587575U discloses a battery high temperature protection structure for electric tricycles, including a protection box, a welding column and a cover plate, the welding columns are located at the upper and lower ends of the left side of the cross section of the protection box, and the welding columns are fixedly connected to the protection box. This battery high temperature protection structure for electric tricycles has a better heat dissipation effect on the battery during actual use through structural improvements, so that the high temperature generated by the battery when the electric tricycle works for a long time can be effectively discharged, reducing the possibility of battery burnout, and increasing the service life of the electric tricycle battery, which is beneficial to actual use. The improved battery high temperature protection structure of the electric tricycle can effectively control the temperature of the battery, avoiding the battery temperature from continuing to run when it exceeds the standard, reducing the damage rate of the battery, and is highly practical during actual use.

[0004] However, this technical solution still has at least the following defects: although the high temperature protection structure can ventilate and dissipate heat for the battery, the battery fire may be caused by factors such as circuit breakage or humidity in addition to the high temperature environment. When the battery catches fire, this structure will also make the fire difficult to control. Therefore, the above solution cannot effectively implement rescue measures after the fire. In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a solid-state battery assembly and a battery protection device. The air inlet and the air outlet are arranged to dissipate the heat inside the protection box to prevent the temperature of the battery body from being too high. At the same time, a closable guide plate and a sealing plate are arranged to close the protection box when the battery catches fire to extinguish the flame in an oxygen-deficient environment. The unlocking mechanism is arranged to separate the protection box from the three-wheeled vehicle body, thereby preventing further damage to the vehicle body circuit due to high temperature.

[0006] The technical solution adopted by the present invention to solve its technical problem is: A battery protection device, comprising: A ventilation unit, the ventilation unit comprising a protection box, a ventilation mechanism is arranged at the bottom of the protection box, the ventilation mechanism comprises an air inlet and an air outlet, the air inlet and the air outlet are opened at the bottom of the protection box, and the ventilation mechanism also comprises a ventilation slot and a guide plate arranged at the bottom of the protection box; A sealing unit, the sealing unit comprising a side substrate, support mechanisms are provided on both sides of the side substrate, and the side substrate supports the protection box through the support mechanisms; The unlocking unit includes a fixed substrate and a mounting mechanism, wherein the mounting mechanism is used to mount the fixed substrate and the side substrate, and the unlocking unit also includes an unlocking mechanism, wherein the unlocking mechanism is used to separate the fixed substrate and the side substrate.

[0007] As a preferred embodiment of the present invention, the ventilation mechanism also 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 downward pressure mechanism is provided at one end of the side baffle, the downward pressure mechanism is used to drive the side baffle to rotate, the side baffle and the guide plate form a channel so that the airflow enters the air inlet and the ventilation slot at the same time when passing through, a sealing plate is movably installed on the ventilation slot, and the ventilation mechanism also includes a partition installed at the bottom of the inner wall of the protective box, the partition is used to block the passage between the air inlet and the air outlet at the bottom of the protective box.

[0008] 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, a convex rod is fixedly installed at one end of the side baffle, and the convex rod is aligned with the position of the protrusion; The power assembly comprises an electric slide rail and an electric slide table which are connected to each other. The electric slide rail is installed on one side of the protection box, and the electric slide table is movably connected to the guide frame.

[0009] As a preferred embodiment of the present invention, the support mechanism includes a positioning rod, which is fixedly connected to the protective box, and a first spring is movably sleeved on the positioning rod. The support mechanism also includes a support member, and a fixed plate is rotatably installed on one side of the support member, and the fixed plate is fixedly connected to the side base plate.

[0010] As a preferred embodiment of the present invention, a first groove is provided in the side substrate, and the sealing unit also includes a pulling mechanism, which is located in the first groove, and the pulling mechanism includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are rotatably connected, one end of the second connecting plate is movably inserted into the support member, a slider is rotatably installed at one end of the first connecting plate, a first sliding rod is movably inserted on 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, a second sliding rod is movably inserted on the connecting block, the second sliding rod is fixedly connected to the side substrate, and an adjustment mechanism is provided at the bottom of the first connecting plate, and the adjustment mechanism is used to drive the first connecting plate.

[0011] As a preferred embodiment of the present invention, the adjusting mechanism includes a rotating shaft, a guide block is fixedly installed on the rotating shaft, a stop column is fixedly connected to one side of the connecting block, the stop column is adapted to the guide block, the rotating shaft is rotatably connected to the side base plate, a first gear is fixedly installed on one end of the rotating shaft, a first tooth plate is meshingly connected to the bottom of the first gear, a connecting piece is fixedly installed on one side of the first tooth plate, a slide rail is fixedly installed on one end of the connecting piece, a boss is installed on the slide rail, an inclined slide groove is provided on the connecting frame, the boss is movably connected to the inclined slide groove, a cover plate is slidably connected to the slide rail, and the cover plate is fixedly connected to the protective box.

[0012] As a preferred embodiment of the present invention, a connecting shaft is fixedly installed on one side of the guide plate, and the sealing unit also includes a falling mechanism, which includes a first support rod and a second support rod, and the first support rod and the second support rod are both fixedly installed on the end of the connecting shaft; a second groove is opened on one side of the side substrate, and the first support rod and the second support rod are 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 baffle rod is also rotatably installed on the side substrate, and one end of the baffle rod is adapted to the third support rod; a bottom plate is fixedly installed on the bottom of the side substrate.

[0013] As a preferred embodiment of the present invention, the mounting mechanism includes a fixed base plate, a fixed seat is mounted on the fixed base plate, a support column is movably mounted on the fixed seat, the mounting mechanism also includes a mounting piece, the support column is movably plugged into the mounting piece, the unlocking unit also includes a pushing mechanism, the pushing mechanism includes a pressure plate, push columns are fixedly mounted at both ends of the pressure plate, and the push columns are aligned with the support columns.

[0014] As a preferred embodiment of the present invention, the unlocking mechanism includes a support shaft, a second gear is fixedly installed on the support shaft, a second gear is meshingly connected with a second tooth plate on one side, the second tooth plate is fixedly connected to the side base plate, a cam is also fixedly installed on the support shaft, a push rod is provided on one side of the cam, the push rod is fixedly connected to the pressure plate, a limit rod is movably inserted on the pressure plate, the two ends of the limit rod are respectively fixedly connected to the side base plate and the mounting piece, a second spring is movably sleeved on the limit rod, the two ends of the second spring are respectively fixedly connected to the mounting piece and the pressure plate, a pull rod is rotatably installed at both ends of the support shaft, and the bottom of the pull rod extends to the bottom of the protective box.

[0015] A solid-state battery assembly, installed in a battery protection device, includes a battery body, a sensor is installed on the battery body, the sensor is used to detect the internal temperature of the protection box, and the sensor is electrically connected to an electric slide rail and an electric slide table.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention dissipates heat inside the protection box by arranging air inlets and air outlets to prevent the temperature of the battery body from being too high. At the same time, a closable guide plate and a sealing plate are arranged to seal the protection box when the battery catches fire, so that the flame is extinguished in an oxygen-deficient environment. The present invention provides an unlocking mechanism to separate the protection box from the tricycle body, thereby preventing further damage to the body circuit due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a battery protection device of the present invention; Figure 2 This is a schematic diagram of the outer structure of the protection box of the present invention; Figure 3 This is a schematic diagram of the structure of the guide plate of the present invention; Figure 4 This is a schematic diagram of the bottom structure of the protection box of the present invention; Figure 5 This is a schematic diagram of the structure of the inclined chute of the present invention; Figure 6 This is a structural schematic diagram of the connecting frame of the present invention; Figure 7 It is a structural schematic diagram of the connecting piece of the present invention; Figure 8 This is a structural schematic diagram of the guide block of the present invention; Fig. 9 This is a schematic diagram of the internal structure of the side substrate of the present invention; Fig.10 This is a structural schematic diagram of the first support rod of the present invention; Fig.11It is a structural schematic diagram of the barrier rod of the present invention; Fig.12 This is a schematic diagram of the structure of the mounting part of the present invention; Fig.13 It is a structural schematic diagram of the cam of the present invention; Fig.14 This is a structural schematic diagram of the support column of the present invention; Fig.15 It is a schematic diagram of the battery body structure of the present invention.

[0018] Reference numerals: 100, protective box; 101, partition; 102, air inlet; 103, air outlet; 104, ventilation slot; 105, sealing plate; 106, guide plate; 107, side baffle; 108, torsion spring; 109, convex rod; 110, electric slide rail; 111, electric slide table; 112, guide frame; 113, connecting frame; 200, side base plate; 201, fixing plate; 202, supporting member; 203, positioning rod; 204, first spring; 205, first groove; 206, first slide bar; 207, slide block; 208, first connecting plate; 209, second connecting plate; 210, connecting block; 211, second slide bar; 212, blocking column; 213, rotating shaft; 214, guide block; 215, first gear; 216, first tooth plate; 217, connecting member; 218, slide rail; 219, boss; 220, inclined slide groove; 221, cover plate; 222, bottom plate; 300, connecting shaft; 301, first support rod; 302, second support rod; 303, second groove; 304, third support rod; 305, stop rod; 400, mounting member; 401, limiting rod; 402, second spring; 403, pressure plate; 404, push column; 405, push rod; 406, cam; 407, second gear; 408, second gear plate; 409, support shaft; 410, pull rod; 411, fixed base plate; 412, fixed seat; 413, support column; 500. Battery body; 501. Sensor. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0020] Example 1

[0021] like Figures 1 to 15 As shown, a battery protection device comprises: 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 also includes a ventilation slot 104 and a guide plate 106 provided at the bottom of the protection box 100; The sealing unit includes a side substrate 200, and support mechanisms are provided on both sides of the side substrate 200. The side substrate 200 supports the protective box 100 through the support mechanisms; 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 also includes an unlocking mechanism, the unlocking mechanism is used to separate the fixed substrate 411 and the side substrate 200 .

[0022] like Figures 1 to 5 As shown, in a specific embodiment, the ventilation mechanism also includes a side baffle 107 rotatably installed at the bottom of the protective box 100, a torsion spring 108 is installed between the side baffle 107 and the protective box 100, and a downward pressing mechanism is arranged at one end of the side baffle 107, and the downward 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 the airflow enters the air inlet 102 and the ventilation slot 104 at the same time when passing through, and a sealing plate 105 is movably installed on the ventilation slot 104, and the ventilation mechanism also includes a partition 101 installed at the bottom of the inner wall of the protective box 100, and the partition 101 is used to block the passage between the air inlet 102 and the air outlet 103 located at the bottom of the protective box 100. In this configuration, when the battery body 500 is installed in the protective box 100, the battery body 500 and the partition 101 form a blocking structure to prevent the airflow from passing through and then diffuse into the entire protective box 100. When the airflow passes through the ventilation slots 104, the air flow rate at the ventilation slots 104 is relatively fast, and the pressure generated attracts the air in the protective box 100 to achieve the removal of hot air.

[0023] like Figures 5 and 6 As 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, and a convex rod 109 is fixedly installed at one end of the side baffle 107, and the convex rod 109 is aligned with the position of the protrusion; The power assembly 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. In this configuration, the electric slide table 111 drives the guide frame 112 to move downward, and 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 protruding rod 109.

[0024] Example 2

[0025] like Figure 1 , Figure 2 , Fig. 9 As shown, in a specific embodiment, the support mechanism includes a positioning rod 203, the positioning rod 203 is fixedly connected to the protection box 100, and a first spring 204 is movably sleeved on the positioning rod 203. The support mechanism also includes a support member 202, and a fixed plate 201 is rotatably mounted on one side of the support member 202, and the fixed plate 201 is fixedly connected to the side base plate 200. In this configuration, the first spring 204 supports the protection box 100 and plays a buffering role at the same time.

[0026] like Figures 8 to 9 As shown, further, a first groove 205 is opened in the side substrate 200, and the sealing unit also includes a pulling mechanism, which is located in the first groove 205, and 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, a slider 207 is rotatably installed at one end of the first connecting plate 208, a first slide bar 206 is movably inserted on the slider 207, the first slide bar 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 bar 211 is movably inserted on the connecting block 210, the second slide bar 211 is fixedly connected to the side substrate 200, and an adjustment mechanism is provided at the bottom of the first connecting plate 208, and the adjustment mechanism is used to drive the first connecting plate 208. In this configuration, the connecting block 210 drives the first connecting plate 208 to move, and 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.

[0027] like Figures 5 to 9As shown, further, the adjustment mechanism includes a rotating shaft 213, on which a guide block 214 is fixedly installed, a blocking column 212 is fixedly connected to one side of the connecting block 210, the blocking column 212 is adapted to the guide block 214, the rotating shaft 213 is rotatably connected to the side base plate 200, a first gear 215 is fixedly installed at one end of the rotating shaft 213, a first tooth plate 216 is meshingly connected to the bottom of the first gear 215, a connecting member 217 is fixedly installed on one side of the first tooth plate 216, a slide rail 218 is fixedly installed at one end of the connecting member 217, a boss 219 is installed on the slide rail 218, an inclined slide groove 220 is opened on the connecting frame 113, the boss 219 is movably connected to the inclined slide groove 220, a cover plate 221 is slidably connected to the slide rail 218, and the cover plate 221 is fixedly connected to the protective box 100. In this arrangement, 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 piece 217. The first tooth plate 216 drives the first gear 215 to rotate through engagement. 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.

[0028] like Figure 10 to Figure 11 As shown, further, a connecting shaft 300 is fixedly installed on one side of the guide plate 106, and the sealing unit also includes a falling mechanism, which includes a first support rod 301 and a second support rod 302, both of which are fixedly installed on the end of the connecting shaft 300, a second groove 303 is opened on one side of the side substrate 200, and both of 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, and the third support rod 304 is adapted to the first support rod 301, and a blocking rod 305 is also rotatably installed on the side substrate 200, and one end of the blocking rod 305 is adapted to the third support rod 304, and a bottom plate 222 is fixedly installed on the bottom of the side substrate 200. In this setting, under normal conditions, the first support rod 301 and the second support rod 302 remain in a fixed state under the action of the second groove 303 and the third support rod 304, so that the position of the guide plate 106 remains unchanged.

[0029] Example 3

[0030] like Fig.12 , Fig.14As shown, in a specific embodiment, the mounting mechanism includes a fixed base plate 411, a fixed seat 412 is mounted on the fixed base plate 411, a support column 413 is movably mounted on the fixed seat 412, the mounting mechanism also includes a mounting member 400, and the support column 413 is movably plugged into the mounting member 400, and the unlocking unit also includes a pushing mechanism, and the pushing mechanism includes a pressure plate 403, and push columns 404 are fixedly mounted at both ends of the pressure plate 403, and the push columns 404 are aligned with the support columns 413. In this setting, the fixed base plate 411 is connected to the body of the tricycle, and is used to install the protective box 100 to place the battery body 500.

[0031] like Figure 12 to Figure 14 As shown, further, the unlocking mechanism includes a support shaft 409, on which a second gear 407 is fixedly mounted, a second gear 407 is meshingly connected to one side of the second gear 407, the second gear plate 408 is fixedly connected to the side substrate 200, a cam 406 is also fixedly mounted on the support shaft 409, a push rod 405 is provided on one side of the cam 406, the push rod 405 is fixedly connected to the pressure plate 403, a limit rod 401 is movably inserted on the pressure plate 403, the two ends of the limit rod 401 are respectively fixedly connected to the side substrate 200 and the mounting member 400, a second spring 402 is movably sleeved on the limit rod 401, the two ends of the second spring 402 are respectively fixedly connected to the mounting member 400 and the pressure plate 403, a pull rod 410 is rotatably mounted at both ends of the support shaft 409, and the bottom of the pull rod 410 extends to the bottom of the protective box 100. In this arrangement, when the protective box 100 falls 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 the engagement with the second gear plate 408, and when the cam 406 rotates, it resists the push rod 405, and the push rod 405 drives the pressure plate 403 to move, and the pressure plate 403 drives the push column 404 to move, and the push column 404 resists the support column 413 to separate the mounting member 400 and the fixing seat 412.

[0032] Example 4

[0033] like Figure 1 , Fig.15 As shown, a solid-state battery assembly is installed in a battery protection device, including a battery body 500, on which a sensor 501 is installed, and 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 configuration, when a fire occurs in the battery body 500, the temperature in the protection box 100 rises rapidly, and 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.

[0034] 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, and the airflow entering the air inlet 102 is diffused to the inner wall of the protection box 100 under the blocking effect of the partition 101, so that the hot air in the protection box 100 is accelerated to circulate and flows out from the air outlet 103, and at the same time, the airflow entering the ventilation slot 104 is sucked out from the air outlet 103 when passing through the air outlet 103 because the flow rate is faster than that of the airflow in the protection box 100, thereby achieving heat dissipation of the protection box 100; When the battery body 500 catches fire, the sensor 501 sends a signal and controls the electric slide rail 110 and the electric slide table 111 to work, the electric slide table 111 drives the guide frame 112 to move downward, the guide frame 112 drives the connecting frame 113 to descend, and the connecting frame 113 drives the side baffle 107 to rotate by abutting against the protruding rod 109; When the connecting frame 113 moves, the slide rail 218 is driven to move to one side through the inclined slide groove 220 and the protruding column 219. The slide rail 218 drives the first tooth plate 216 to move through the connecting piece 217. The first tooth 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 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 supporting piece 202. At this time, the bottom of the first spring 204 loses support, causing the protective box 100 to fall. 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 pushed to rotate so that the blocking rod 305 and the third support rod 304 are disengaged. At this time, the protective box 100 abuts 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 abuts 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 abuts 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 extinguishes due to lack of oxygen. When the protective box 100 falls 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 the second gear 407 drives the cam 406 to rotate through the engagement with the second tooth plate 408 while descending. When the cam 406 rotates, it abuts against the push rod 405, and the push rod 405 drives the pressure plate 403 to move, and the pressure plate 403 drives the push column 404 to move, and the push column 404 abuts against the support column 413 to separate the mounting part 400 and the fixing seat 412. At this time, the protective box 100 and part of the side substrate 200 descend as a whole and are separated from the body of the electric vehicle to prevent damage to the body wiring caused by high temperature.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A battery protection device, characterized in that: include: A ventilation unit, the ventilation unit comprising a protection box (100), the bottom of the protection box (100) being provided with a ventilation mechanism, the ventilation mechanism comprising an air inlet (102) and an air outlet (103), the air inlet (102) and the air outlet (103) being provided at the bottom of the protection box (100), the ventilation mechanism further comprising a ventilation slot (104) and a guide plate (106) provided at the bottom of the protection box (100); A sealing unit, the sealing unit comprising a side substrate (200), support mechanisms being arranged on both sides of the side substrate (200), and the side substrate (200) supporting the protection box (100) through the support mechanisms; An unlocking unit, the unlocking unit comprising a fixed substrate (411) and a mounting mechanism, the mounting mechanism being used to mount the fixed substrate (411) and the side substrate (200), the unlocking unit further comprising an unlocking mechanism, the unlocking mechanism being used to separate the fixed substrate (411) and the side substrate (200).

2. A battery protection device according to claim 1, characterized in that: The ventilation mechanism further comprises a side baffle (107) rotatably mounted at the bottom of the protection box (100), a torsion spring (108) being mounted between the side baffle (107) and the protection box (100), a downward pressing mechanism being arranged at one end of the side baffle (107), the downward pressing mechanism being used to drive the side baffle (107) to rotate, the side baffle (107) and the guide plate (106) forming a channel so that airflow simultaneously enters the air inlet (102) and the ventilation slot (104) when passing through, a sealing plate (105) being movably mounted on the ventilation slot (104), and the ventilation mechanism further comprises a partition (101) mounted at the bottom of the inner wall of the protection box (100), the partition (101) being used to block a passage between the air inlet (102) and the air outlet (103) located at the bottom of the protection box (100).

3. A battery protection device according to claim 2, characterized in that: The pressing mechanism comprises a power assembly, a guide frame (112) is provided at the bottom of the power assembly, a connecting frame (113) is fixedly mounted 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 mounted at one end of the side baffle (107), and the convex rod (109) is aligned with the position of the protrusion; The power assembly comprises 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 protection box (100); and the electric slide table (111) is movably connected to a guide frame (112).

4. A battery protection device according to claim 3, characterized in that: The support mechanism comprises a positioning rod (203), the positioning rod (203) is fixedly connected to the protection box (100), a first spring (204) is movably sleeved on the positioning rod (203), and the support mechanism also comprises a support member (202), a fixed plate (201) is rotatably mounted on one side of the support member (202), and the fixed plate (201) is fixedly connected to the side base plate (200).

5. A battery protection device according to claim 4, characterized in that: A first groove (205) is provided in the side base plate (200), and the sealing unit further comprises a pulling mechanism, the pulling mechanism is located in the first groove (205), the pulling mechanism comprises 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 plugged into the support member (202), and a slider (207) is rotatably mounted on one end of the first connecting plate (208). A first slide bar (206) is movably connected to the slider (207), and the first slide bar (206) is fixedly connected to the side base plate (200). A connecting block (210) is rotatably mounted on the bottom of the first connecting plate (208), and a second slide bar (211) is movably connected to the connecting block (210), and the second slide bar (211) is fixedly connected to the side base plate (200). An adjusting mechanism is provided at the bottom of the first connecting plate (208), and the adjusting mechanism is used to drive the first connecting plate (208).

6. A battery protection device according to claim 5, characterized in that: The adjustment mechanism comprises a rotating shaft (213), a guide block (214) is fixedly mounted on the rotating shaft (213), a stop column (212) is fixedly connected to one side of the connecting block (210), the stop column (212) is adapted to the guide block (214), the rotating shaft (213) is rotatably connected to the side base plate (200), a first gear (215) is fixedly mounted on one end of the rotating shaft (213), a first gear plate (216) is meshedly connected to the bottom of the first gear (215), and the A connecting piece (217) is fixedly mounted on one side of the first tooth plate (216); a slide rail (218) is fixedly mounted on one end of the connecting piece (217); a boss (219) is mounted on the slide rail (218); an inclined slide groove (220) is provided on the connecting frame (113); the boss (219) is movably connected to the inclined slide groove (220); a cover plate (221) is slidably connected to the slide rail (218); and the cover plate (221) is fixedly connected to the protective box (100).

7. A battery protection device according to claim 6, characterized in that: A connecting shaft (300) is fixedly mounted on one side of the guide plate (106); the sealing unit further comprises a falling mechanism, the falling mechanism comprising a first support rod (301) and a second support rod (302); the first support rod (301) and the second support rod (302) are both fixedly mounted on the end of the connecting shaft (300); a second groove (303) is provided on one side of the side substrate (200); the first support rod (301) and the second support rod (302) are both 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 matched with the first support rod (301); a blocking rod (305) is rotatably mounted on the side substrate (200); one end of the blocking rod (305) is matched with the third support rod (304); a bottom plate (222) is fixedly mounted on the bottom of the side substrate (200).

8. A battery protection device according to claim 7, characterized in that: The mounting mechanism comprises a fixed base plate (411), a fixed seat (412) is mounted on the fixed base plate (411), a support column (413) is movably mounted on the fixed seat (412), the mounting mechanism further comprises a mounting member (400), the support column (413) is movably plugged into the mounting member (400), and the unlocking unit further comprises a pushing mechanism, the pushing mechanism comprises a pressure plate (403), push columns (404) are fixedly mounted at both ends of the pressure plate (403), and the push columns (404) are aligned with the support columns (413).

9. A battery protection device according to claim 8, characterized in that: The unlocking mechanism comprises a support shaft (409), a second gear (407) is fixedly mounted on the support shaft (409), a second gear (407) is meshedly connected to one side of the second gear (407), the second gear (408) is fixedly connected to the side base plate (200), a cam (406) is also fixedly mounted on the support shaft (409), a push rod (405) is provided on one side of the cam (406), the push rod (405) is fixedly connected to the pressure plate (403), and the pressure plate A limit rod (401) is movably inserted on (403), and the two ends of the limit rod (401) are respectively fixedly connected to the side base plate (200) and the mounting member (400). A second spring (402) is movably sleeved on the limit rod (401), and the two ends of the second spring (402) are respectively fixedly connected to the mounting member (400) and the pressure plate (403). Pull rods (410) are rotatably installed at both ends of the support shaft (409), and the bottom of the pull rod (410) extends to the bottom of the protective box (100).

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

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