Battery pack structure and electric cross-country motorcycle

Abstract

The invention discloses a battery pack structure and an electric off-road motorcycle, the battery pack structure comprises a vehicle body, a battery mounting rack for mounting and fixing a battery assembly is arranged in the vehicle body, the battery assembly is slidably arranged on the battery mounting rack in a guiding manner, and the battery assembly can slide out of the lower end face of the battery mounting rack to be separated from the battery mounting rack. A temperature sensing locking piece is arranged in the battery assembly, and a zero-speed unlocking piece is arranged on the battery installation frame. According to the battery pack structure and the electric cross-country motorcycle, when the temperature of a battery is too high, locking of a first battery assembly and the motorcycle is relieved, meanwhile, power transmission with the motorcycle is automatically cut off, power output of the battery is stopped, further temperature rising is stopped, the interior of the motorcycle loses power and decelerates until the motorcycle stops, and after the motorcycle is static in the motorcycle, the first battery assembly and the motorcycle are locked. An operator pulls the switch piece so that the battery assembly can rapidly fall down, and then the high-temperature power source can be safely and rapidly removed from the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of electric motorcycles, in particular to a battery pack structure and an electric off-road motorcycle. Background Art

[0002] The battery of a conventional electric motorcycle is basically fixedly installed in the frame, such as the Chinese patent with publication number CN111661229B, in which the power battery is fixedly installed in the center of the frame. If the battery needs to be removed, the side cover must be removed; When electric off-road motorcycles for competition are in use, the battery is in a high-load operating state, which will generate a lot of heat. The existing heat dissipation method is to dissipate heat from the battery through air cooling. When the heat dissipation of the battery cannot keep up with the heat generation, the temperature of the battery will continue to rise. When it reaches the critical value, the battery will be in an unstable state and may burn. Since the battery is at the core of the vehicle, when the battery overheats, it is often not possible to remove the problem battery in the first time, resulting in the loss of the entire vehicle.

[0003] Power batteries need to dissipate heat quickly during normal use, and be automatically isolated from the outside world when the temperature rises, thereby preventing the battery from burning. Summary of the invention

[0004] Existing power batteries are all closed batteries. During normal use, the temperature of the battery core cannot be released immediately, so the inside of the battery will be in an unstable state and may burn.

[0005] The present invention aims at the deficiencies in the prior art and provides a battery pack structure and an electric off-road motorcycle.

[0006] To solve the above technical problems, the present invention is solved through the following technical solutions: a battery pack structure, including a battery shell, a battery body is arranged inside, air inlets are opened on the front and rear end plates of the battery shell, the front end plate is elastically guided and slidably arranged on the battery shell, a fluid channel for heat dissipation air to flow through is arranged between the battery body and the inner wall of the battery shell, the battery body is guided and slidably arranged in the battery shell, and a conical heat dissipation block aligned with the air inlet is arranged on the battery body, the front end plate and the battery body are locked on the battery shell, when the temperature of the battery body rises, the lock of the front end plate and the battery body is released, and the front end plate moves backward so that the air inlet is blocked by the conical heat dissipation block, and then the battery body is closed and wrapped by the battery shell.

[0007] The beneficial effect is that during normal use, the battery shell is in an open state, which can quickly dissipate heat from the internal battery body. When the temperature of the battery body is too high to a certain extent, the battery shell can be quickly closed to seal the battery body to prevent it from burning.

[0008] In the above solution, preferably, the battery body is locked to the battery housing by a locking member, and the battery housing is locked to the battery housing by a first elastic locking pin.

[0009] In the above scheme, preferably, an air inlet groove is opened on the side of the battery shell, and an air guide plate is elastically rotatably arranged in the air inlet groove to guide the wind passing through the side into the battery shell, and conical heat dissipation blocks are arranged on the four sides of the battery body. The inner side of the air guide plate touches the conical heat dissipation block, and the outer side extends out of the side wall of the battery shell.

[0010] In the above scheme, preferably, the front end plate is unlocked and slides backward, and the battery body is unlocked synchronously. The front end plate touches the battery body, driving the battery body to slide backward and press against the rear end surface of the battery shell. The air inlets on the front end plate and the rear end surface of the battery shell are blocked by the conical heat dissipation block, and the conical heat dissipation block on the side of the battery body touches the air guide plate and rotates to block the air inlet slot.

[0011] In the above scheme, preferably, an open groove is opened on the inner side of the wind guide plate to allow the incoming wind to flow backward and flow through the conical heat dissipation block at the rear.

[0012] In the above scheme, preferably, the conical heat dissipation blocks on the battery body are evenly arranged, and the air inlets on the front end plate and the rear end surface of the battery housing are consistent with the conical heat dissipation blocks on the front and rear end surfaces of the battery body.

[0013] In the above scheme, preferably, the air inlet slots are evenly arranged in multiple numbers, the number of which is consistent with the number of columns of conical heat dissipation blocks on the side of the battery body, and the spacing between them is consistent with the spacing between the columns of conical heat dissipation blocks on the side of the battery body.

[0014] An electric off-road motorcycle using a battery pack structure includes a vehicle body, a battery mounting frame for mounting and fixing a battery assembly is arranged inside the vehicle body, the battery assembly guide slidingly is arranged on the battery mounting frame, and the battery assembly can slide out from the lower end surface of the battery mounting frame and detach from the battery mounting frame, a temperature-sensitive locking member is arranged in the battery assembly, and a zero-speed unlocking member is arranged on the battery mounting frame, both of which are used to lock the battery assembly on the battery mounting frame, the temperature-sensitive locking member is unlocked when the temperature reaches a set value, and the power connection between the battery assembly and the vehicle body is disconnected, so that the vehicle loses power, and the zero-speed unlocking member can be manually unlocked by an operator only after the vehicle stops, and after the temperature-sensitive locking member and the zero-speed unlocking member are unlocked at the same time, the battery assembly automatically falls downward.

[0015] The beneficial effect is that when the battery temperature is too high, it can automatically cut off the power transmission to the vehicle, causing the vehicle to lose power. After the vehicle is stationary, the operator can pull the switch to quickly drop the battery assembly downward, thereby quickly removing the high-temperature power source from the vehicle.

[0016] In the above scheme, preferably, the temperature-sensitive locking member includes a bimetallic strip and a first elastic locking pin. A locking hole is opened on the battery mounting frame. The first elastic locking pin is extended to lock the battery assembly on the battery mounting frame. The rear end of the first elastic locking pin is connected to one end of the first pull rope, and the other end is connected to the bimetallic strip. When the temperature rises to the critical temperature, the bimetallic strip is deformed and pulls the first elastic locking pin to unlock.

[0017] In the above scheme, preferably, a central control unit is provided on the vehicle body, an independent power supply is provided in the central control unit for the operation of the vehicle control system, a zero-speed detection unit is provided in the central control unit, the zero-speed unlocking member includes a shielding member and a second elastic locking pin, the second elastic locking pin is provided on the battery mounting frame for locking the battery assembly, a sliding cover is provided at the upper end of the shielding member, a pulling ring is provided inside, the rear end of the second elastic locking pin is connected to one end of the second pull rope, and the other end is connected to the pulling ring, so that the sliding cover is unlocked and can be opened when the vehicle is at zero speed.

[0018] The beneficial effects of the present invention are as follows: the present invention provides a battery pack structure and an electric off-road motorcycle, which, when the battery temperature is too high, releases the lock between the first battery assembly and the vehicle, and automatically cuts off the power transmission with the vehicle, so that the battery stops outputting power, thereby stopping further temperature rise, and causing the vehicle to lose power and slow down until it stops. After the vehicle stops, the operator can pull the switch to quickly drop the battery assembly downward, thereby safely and quickly removing the high-temperature power source from the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the present invention.

[0020] Figure 2 It is a cross-sectional view of the present invention.

[0021] Figure 3 Schematic diagram of the battery assembly of the present invention.

[0022] Figure 4 Schematic diagram of the battery housing of the present invention.

[0023] Figure 5 It is a longitudinal cross-sectional view of the battery assembly of the present invention.

[0024] Figure 6 It is a transverse cross-sectional view of the heat dissipation state of the battery assembly of the present invention.

[0025] Figure 7 It is a transverse cross-sectional view of the battery assembly of the present invention in a sealed state.

[0026] Figure 8 This is a partial enlarged view of the shielding member of the present invention ( Figure 2 A in the figure).

[0027] Fig. 9 This is a partial enlarged view of the temperature-sensitive locking member of the present invention ( Figure 7 (at point B in the figure). DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Example 1: See Figure 1-Figure 9 A battery pack structure and an electric off-road motorcycle include a vehicle body 1, a battery assembly 2 and a central control unit 4. A battery mounting frame 11 is fixedly arranged on a frame in the vehicle body 1, and a mudguard is arranged below the battery mounting frame 11 with upper and lower buckle connections. The battery assembly 2 is arranged on the battery mounting frame 11, and when the battery assembly falls downward, the battery assembly 2 presses on the mudguard. Under the action of the battery assembly 2, the mudguard connected with the buckle automatically falls downward. The battery assembly 2 provides power for the vehicle body 1. The central control unit 4 is arranged on the vehicle body 1, and an independent power supply is arranged inside. The independent power supply supplies power to the control system of the vehicle body 1, so that when the battery assembly 2 and the vehicle body 1 are powered off, the control system of the vehicle can still be used normally, and when the battery assembly 2 is connected to the vehicle body 1, the battery assembly 2 charges the independent power supply in the central control unit 4.

[0029] The battery mounting frame 11 is designed with four L-shaped guide edges with an opening at the lower end. The battery assembly 2 includes a temperature-sensitive locking member 21, a battery housing 22 and a battery body 23. The battery housing 22 is in a cubic shape. The L-shaped guide edges of the battery mounting frame 11 provide guide grooves for the battery housing 22. The battery assembly 2 is guided and slidably arranged on the four L-shaped guide edges by the battery housing 22. Guide rails are arranged on the upper and lower end surfaces of the battery housing 22. A guide block is arranged on the battery body 23. The guide block is guided and slidably arranged on the guide rail, and is locked on the guide rail by a locking member, so that the battery body 23 is fixedly connected to the battery housing 22 to form a whole. The battery body 23 Guide blocks are provided at the upper and lower parts, and the locking parts are elastic telescopic blocks. The upper and lower elastic telescopic blocks are respectively connected to the positive and negative electrodes of the battery body 23 through wires, and a locking groove is provided on the guide rail, and an electrode contact piece is provided on the bottom surface of the locking groove. When the elastic telescopic block is located in the locking groove, the elastic telescopic block touches the electrode contact piece, and the electrode contact piece is connected to the power male plug provided on the battery housing 22 through a wire. A power female plug is provided on the battery mounting frame 11, and the male plug and the female plug are connected to supply power to the motor of the vehicle body 1. When the elastic telescopic block leaves the locking groove, the power supply is interrupted, and at the same time, the battery body 23 can slide on the guide rail in the battery housing 22.

[0030] The temperature-sensitive locking member 21 includes a bimetallic strip 211 and a first elastic locking pin 212. A locking hole is provided on the L-shaped guide edge of the battery mounting frame 11. The first elastic locking pin 212 is elastically slidably arranged on the battery housing 22. The bimetallic strip 211 is arranged in the battery body 23. A first pull rope 213 is connected between the bimetallic strip 211 and the first elastic locking pin 212. In the initial state, the battery body 23 is locked in the battery housing 22. At this time, the first elastic locking pin 212 is in an extended state, and the first pull rope 213 is in a tightened state. When the battery assembly 2 is mounted on the battery housing 23, the battery body 23 is locked in the battery housing 22. When the battery is mounted on the battery mounting bracket 11, the first elastic locking pin 212 is pushed inward, so that the battery housing 22 can move upward along the four L-shaped guide edges. After being installed in place, the locking hole is aligned with the first elastic locking pin 212, and the first elastic locking pin 212 automatically pops outward and is inserted into the locking hole, thereby locking the battery assembly 2 on the battery mounting bracket 11. When the temperature in the battery body 23 rises to the set temperature, the bimetallic strip 211 is deformed, and the first elastic locking pin 212 is pulled into the battery housing 22 by the first pull rope 213, so that the temperature-sensitive locking member 21 is unlocked.

[0031] The battery mounting frame 11 is also provided with a zero-speed unlocking member 3, which includes a shielding member 31, a second pull rope 32 and a second elastic locking pin 33. The shielding member 31 is arranged near the handlebar, and a cavity is provided inside, and a pulling ring 311 is provided in the cavity for guiding sliding. A sliding cover 312 is provided at the upper end of the cavity for elastic guiding sliding. The second elastic locking pin 33 is provided on the L-shaped guide edge of the battery mounting frame 11, and a locking hole is provided on the front end side wall of the battery housing 22. After the battery assembly 2 is installed in place, the second elastic locking pin 33 is inserted into the locking hole. The rear end of the second elastic locking pin 33 is connected to one end of the second pull rope 32, and the other end is connected to the pulling ring 311. Pulling the pulling ring 311 can pull the second elastic locking pin 33 backward to unlock it. The sliding cover 312 is electrically controlled, and a vehicle zero speed detection unit is provided in the central control unit 4. After the vehicle stops, the central control unit 4 controls the electrically controlled locking part to unlock, so that the operator can open the sliding cover 312 and then pull the pulling ring 311. The electrically controlled locking part 313 can be an electromagnet with a magnetic iron block or an electric telescopic pin with a locking hole.

[0032] The battery assembly 2 is locked on the battery mounting bracket 11 by the joint action of the zero-speed unlocking member 3 and the temperature-sensing locking member 21. After the temperature of the battery assembly rises to the set temperature, the temperature-sensing locking member 21 is unlocked first. After the temperature-sensing locking member 21 is unlocked, the vehicle's motor is powered off. After the vehicle stops, the operator can unlock the zero-speed unlocking member 3 by pulling the pulling ring, and then the battery assembly 2 automatically slides down from the battery mounting bracket 11, so that the automatic protection mechanism of the battery is activated when it is overheated. After the vehicle stops, the rider can quickly take out the battery to ensure the safety of the vehicle.

[0033] At the same time, when the battery temperature reaches the set temperature, the central control unit 4 can display the battery overheating and start the overheating protection, reminding the rider of the battery overheating in the first time, so that the rider can be prepared for the response.

[0034] Embodiment 2:

[0035] Based on Example 1, Example 2 has the following further improvements, specifically: Figure 1-Figure 9 A front end plate 222 is elastically guided and slidably provided at the front end of the battery shell 22, and the front end plate 222 is also locked on the guide rail by a separate first elastic locking pin 212. At the same time, a plurality of air inlets 221 are evenly provided on the front end plate 222 and the rear end surface of the battery shell 22. When the battery body 23 is locked on the guide rail, a fluid channel for air circulation is reserved between the battery body 23 and the inner wall of the battery shell 22, and an air guide cover is provided around the air inlet 221 of the front end plate 222. When the vehicle is in motion, air is introduced into the air inlet hole 221 from the air guide cover. The air guide cover is larger than the air inlet 221, so that the flow rate of the incoming air is accelerated, and it flows out from the air inlet 221 on the rear end surface of the battery shell 22. When flowing through the battery body 23, the accelerated air flow rate can better dissipate the heat of the battery body 23.

[0036] A plurality of air inlet slots 223 are evenly provided on the side wall of the battery shell 22, and an air guide plate 224 is elastically rotatably provided on the air inlet slots 223. The side edge of the air guide plate 224 located inside the battery shell 22 elastically presses against the side wall of the battery body 23, and an opening slot 2241 is provided on the side edge of the air guide plate 224 located inside the battery shell 22, so that the airflow passing through will not be blocked by the inner side plate of the air guide plate 224, wherein the air guide plate 224 is in a forward tilted state when in an open state, so that the airflow passing through the side of the battery shell 22 is guided by the air guide plate 224 into the battery shell 22, and the internal battery body 23 is dissipated, and conical heat dissipation blocks 231 are evenly provided upwardly around the battery body 23, the conical heat dissipation blocks 231 on the front and rear end surfaces are consistent with the air inlets 221 on the front end surface 222 and the rear end surface of the battery shell 22, and the number and spacing of the conical heat dissipation blocks 231 on the left and right sides are consistent with the air inlet slots 223.

[0037] In the initial state, the air flow is introduced into the battery housing 22 through the air guide cover of the front end plate 222, and the side air guide plate 224 is also in an open state, and the air flow passing through the side is also introduced into the battery housing 22, thereby reducing the temperature of the battery body 23. When the motor uses high power, the temperature of the battery body 23 rises to a critical value, and the bimetallic strip pulls the first elastic locking pin 212 to unlock, thereby putting the front end plate 222 in an unlocked state, and the front end of the front end plate 222 elastically touches an elastic member, and then moves backward under the action of the elastic member, and one end of the third pull rope is connected to the front end plate 222, and the other end is connected to the rear end of the elastic telescopic block. Therefore, in the process of the front end plate 222 moving backward, the third pull rope is used to unlock the lock between the battery body 23 and the guide rail, so that the battery body 23 can slide on the guide rail, and at this time, the power connection between the battery body 23 and the vehicle is disconnected.

[0038] The front end plate 222 moves backward and touches the battery body 23, thereby driving the battery body 23 to move backward together, so that the rear end of the battery body 23 touches the rear end surface of the battery shell 22. At the same time, when the front end plate 222 touches the battery body 23, the air inlet 221 on the front end plate 222 touches the conical heat dissipation block 231. When the battery body 23 touches the rear end surface, the front end surface 222 and the air inlet 221 on the rear end surface of the battery shell 22 are blocked by the front and rear conical heat dissipation blocks 231 on the battery body 23, thereby blocking the front and rear end surfaces of the battery shell 22. In the process of the battery body 23 moving backward, the conical heat dissipation block 231 on the side wall touches the air guide plate 224, causing the air guide plate 224 to rotate, thereby blocking the side air inlet slot 223, so that the interior of the battery shell 22 is in a sealed state, thereby preventing the battery body 23 from burning due to excessively high and unstable temperature.

[0039] After the vehicle is powered off and stopped, the operator can open the sliding cover 312 and then pull the pull ring 311 to make the sealed battery assembly 2 automatically fall downward.

[0040] Its working principle or usage is as follows: In the initial state, the normal airflow of the vehicle is introduced into the battery housing 22 from the wind deflector of the front end plate 222, and the side wind deflector 224 is also in an open state, which also introduces the airflow passing through the side into the battery housing 22, thereby reducing the temperature of the battery body 23.

[0041] When the motor is used at high power, the temperature of the battery body 23 rises rapidly. When the temperature rises to a critical value, the bimetallic strip pulls the first elastic locking pin 212 to unlock, and the temperature-sensitive locking member 21 is in an unlocked state. The front end plate 222 is unlocked, and the front end plate 222 moves backward under the action of the elastic member, and the lock between the battery body 23 and the guide rail is unlocked by the third pull rope, so that the battery body 23 can slide on the guide rail. At this time, the power connection between the battery body 23 and the vehicle is disconnected.

[0042] The front end plate 222 moves backward and contacts the battery body 23, driving the battery body 23 to move backward together, so that the rear end of the battery body 23 contacts the rear end surface of the battery shell 22, and the air inlet 221 on the front end surface 222 and the rear end surface of the battery shell 22 are blocked by the front and rear conical heat dissipation blocks 231 on the battery body 23, thereby blocking the front and rear end surfaces of the battery shell 22, and the conical heat dissipation blocks 231 on the side wall of the battery body 23 move backward and contact the air guide plate 224, causing the air guide plate 224 to rotate, thereby blocking the side air inlet slot 223, so that the interior of the battery shell 22 is in a sealed state, thereby preventing the battery body 23 from burning due to excessively high and unstable temperature.

[0043] After the vehicle is powered off and stopped, the operator opens the sliding cover 312 and then pulls the pull ring 311 to make the sealed battery assembly 2 automatically fall downward.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery pack structure, comprising a battery housing (22) with a battery body (23) disposed therein, characterized in that: The front and rear end plates of the battery housing (22) are provided with air inlets (221); the front end plate (222) is elastically guided and slidably arranged on the battery housing (22); and a fluid channel for cooling air to flow through is arranged between the battery body (23) and the inner wall of the battery housing (22); The battery body (23) is slidably arranged in the battery housing (22), and a conical heat dissipation block (231) aligned with the air inlet (221) is arranged on the battery body (23); The front end plate (222) and the battery body (23) are locked on the battery housing (22) by a locking piece; When the temperature of the battery body (23) rises, the locking of the front end plate (222) and the battery body (23) is released, and the front end plate (222) moves backward, so that the air inlet (221) is blocked by the conical heat dissipation block (231), and the battery body (23) is thereby sealed and wrapped by the battery shell (22).

2. A battery pack structure according to claim 1, characterized in that: The battery body (23) is locked on the battery housing (22) via a locking piece, and the battery housing (22) is locked on the battery housing (22) via a first elastic locking pin (212).

3. A battery pack structure according to claim 1, characterized in that: The battery housing (22) is provided with an air inlet slot (223) on the side thereof, and an air guide plate (224) is elastically rotatably arranged in the air inlet slot (223) for guiding wind passing through the side into the battery housing (22). Conical heat dissipation blocks (231) are arranged on the four walls of the battery body (23), and the inner side of the air guide plate (224) contacts the conical heat dissipation block (231) and the outer side extends out of the side wall of the battery housing (22).

4. A battery pack structure according to claim 3, characterized in that: The front end plate (222) is unlocked and slides backwards, synchronously unlocking the battery body (23); the front end plate (222) contacts the battery body (23), driving the battery body (23) to slide backwards and press against the rear end surface of the battery housing (22); the air inlet (221) on the rear end surface of the front end plate (222) and the battery housing (22) is blocked by the conical heat dissipation block (231); the conical heat dissipation block (231) on the side of the battery body (23) contacts the air guide plate (224) and rotates, thereby blocking the air inlet slot (223).

5. A battery pack structure according to claim 3, characterized in that: An open slot (2241) is provided on the inner side of the wind guide plate (224) for allowing the inflowing wind to flow backwards and pass through the conical heat dissipation block (231) at the rear.

6. A battery pack structure according to claim 1, characterized in that: The conical heat dissipation blocks (231) on the battery body (23) are evenly arranged, and the air inlets (221) on the front end plate (222) and the rear end surface of the battery housing (22) are consistent with the conical heat dissipation blocks (231) on the front and rear end surfaces of the battery body (23).

7. A battery pack structure according to claim 1, characterized in that: The air inlet slots (223) are evenly arranged in a plurality, the number of which is consistent with the number of columns of the conical heat dissipation blocks (231) on the side of the battery body (23), and the spacing between them is consistent with the spacing between the columns of the conical heat dissipation blocks (231) on the side of the battery body (23).

8. An electric off-road motorcycle using a battery pack structure according to any one of claims 1 to 7, characterized in that: The vehicle comprises a vehicle body (1), wherein a battery mounting frame (11) for mounting and fixing a battery assembly (2) is arranged in the vehicle body (1), wherein the battery assembly (2) is slidably arranged on the battery mounting frame (11), wherein a temperature-sensitive locking member (21) is arranged in the battery assembly (2), and a zero-speed unlocking member (3) is arranged on the battery mounting frame (11), both of which are used to lock the battery assembly (2) on the battery mounting frame (11); A temperature-sensitive locking member (21) is automatically unlocked when the temperature reaches a set value, and the power connection between the battery assembly (2) and the vehicle body (1) is disconnected, causing the vehicle to lose power; The zero-speed unlocking member (3) is used to identify the vehicle's motion state, and the unlocking operation can only be performed after the vehicle stops; The temperature-sensitive locking member (21) and the zero-speed unlocking member (3) are unlocked simultaneously, and the battery assembly (2) slides downward along the battery mounting frame (11).

9. The electric off-road motorcycle according to claim 8, characterized in that: The temperature-sensitive locking member (21) comprises a bimetallic strip (211) and a first elastic locking pin (212); a locking hole is provided on the battery mounting frame (11); the first elastic locking pin (212) is extended to lock the battery assembly (2) on the battery mounting frame (11); the rear end of the first elastic locking pin (212) is connected to one end of a first pull rope (213), and the other end is connected to the bimetallic strip (211); when the temperature rises to a critical temperature, the bimetallic strip (211) deforms and pulls the first elastic locking pin (212) to unlock.

10. The electric off-road motorcycle according to claim 1, characterized in that: The vehicle body (1) is provided with a central control unit (4), an independent power supply is provided in the central control unit (4) for operating the vehicle control system, a zero-speed detection unit is provided in the central control unit (4), the zero-speed unlocking member (3) comprises a shielding member (31) and a second elastic locking pin (33), the second elastic locking pin (33) is provided on the battery mounting frame (11) for locking the battery assembly (2), a sliding cover (312) is provided at the upper end of the shielding member (31), a pulling ring (311) is provided inside, the rear end of the second elastic locking pin (33) is connected to one end of a second pull rope (32), and the other end is connected to the pulling ring (311), and the sliding cover (312) is unlocked and can be opened when the vehicle is at zero speed.

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