A battery pack structure and electric off-road motorcycle

Abstract

The present invention discloses a battery pack structure and an electric off-road motorcycle, comprising a vehicle body, a battery mounting frame for mounting and fixing a battery assembly, the battery assembly guide slidingly 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. The present invention provides a battery pack structure and an electric off-road motorcycle, which releases the first lock between the battery assembly and the vehicle when the battery temperature is too high, and automatically cuts off the power transmission with the vehicle, so that the battery stops outputting power, and further stops the temperature from rising, and at the same time makes the vehicle lose power and slow down until it stops, and after the vehicle stops, the operator pulls the switch member to quickly drop the battery assembly downward, thereby safely and quickly removing the high-temperature power supply from the vehicle.

Description

Technical Field

[0001] This invention relates to the field of electric motorcycle technology, and in particular to a battery pack structure and an electric off-road motorcycle. Background Technology

[0002] In traditional electric motorcycles, the battery is basically fixed inside the frame. For example, in Chinese patent CN111661229B, the power battery is fixed in the center of the frame. If the battery needs to be removed, the side cover must be removed.

[0003] When electric off-road motorcycles are used for racing, the battery operates under high load, generating a lot of heat. The current cooling method is to cool the battery with air. When the battery's cooling cannot keep up with the heat generation, the battery temperature will continue to rise. When it reaches a critical value, the battery will be in an unstable state and may burn. Since the battery is located in the core of the vehicle, when the battery overheats, the problematic battery cannot be removed immediately, resulting in the loss of the entire vehicle.

[0004] Power batteries need to dissipate heat quickly during normal use and automatically isolate themselves from the outside environment after the temperature rises, thereby preventing the battery from burning. Summary of the Invention

[0005] Existing power batteries are all sealed batteries. During normal use, the temperature inside the battery cannot be released immediately, which will cause the battery to be in an unstable state and may lead to combustion.

[0006] This invention addresses the shortcomings of existing technologies by providing a battery pack structure and an electric off-road motorcycle.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a battery pack structure, including a battery casing, a battery body disposed inside the casing, air inlets on the front and rear end plates of the battery casing, a front plate elastically guided and slidably disposed on the battery casing, a fluid channel for heat dissipation airflow being disposed between the battery body and the inner wall of the battery casing, the battery body being guided and slidably disposed inside the battery casing, and a conical heat dissipation block aligned with the air inlet being disposed on the battery body, the front plate and the battery body being locked on the battery casing, after the temperature of the battery body rises, the locking of the front plate and the battery body is released, the front plate moves backward, the air inlet is blocked by the conical heat dissipation block, and the battery body is then enclosed and wrapped by the battery casing.

[0008] Its beneficial effect is that, during normal use, the battery casing is in an open state, which allows the internal battery body to dissipate heat quickly. When the battery body temperature gets too high, the battery casing can quickly close to seal the battery body and prevent it from burning.

[0009] In the above scheme, 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.

[0010] In the above scheme, preferably, the side of the battery casing is provided with an air inlet groove, and an air guide plate is flexibly and rotatably arranged in the air inlet groove to guide the air passing by the side into the battery casing. Conical heat dissipation blocks are provided on all 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 casing.

[0011] In the above scheme, preferably, the front panel unlocks and slides backward, simultaneously unlocking the battery body. The front panel touches the battery body, causing the battery body to slide backward and press against the rear end face of the battery casing. The air inlets on the front panel and the rear end face of the battery casing are blocked by the conical heat sink. The conical heat sink on the side of the battery body touches the air guide plate and rotates, sealing the air inlet slot.

[0012] In the above scheme, preferably, the inner side of the air guide plate is provided with an opening groove for the air to flow backward and pass through the conical heat dissipation block behind it.

[0013] 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 face of the battery casing are consistent with the conical heat dissipation blocks on the front and rear end faces of the battery body.

[0014] In the above scheme, preferably, multiple air inlet slots are evenly arranged, the number of which is consistent with the number of rows of conical heat dissipation blocks on the side of the battery body, and the spacing is consistent with the row spacing of the conical heat dissipation blocks on the side of the battery body.

[0015] An electric off-road motorcycle using a battery pack structure includes a vehicle body. A battery mounting bracket is installed inside the vehicle body for mounting and securing the battery assembly. The battery assembly is guided and slidably mounted on the battery mounting bracket, and can slide out from the lower end of the battery mounting bracket to detach from it. A temperature-sensitive locking component is installed inside the battery assembly, and a zero-speed unlocking component is installed on the battery mounting bracket. Both are used to lock the battery assembly onto the battery mounting bracket. The temperature-sensitive locking component unlocks when a set temperature is reached, disconnecting the power connection between the battery assembly and the vehicle body, causing the vehicle to lose power. The zero-speed unlocking component stops inside the vehicle, allowing the operator to manually unlock it. When both the temperature-sensitive locking component and the zero-speed unlocking component unlock simultaneously, the battery assembly automatically falls downwards.

[0016] Its 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 downwards, thereby quickly removing the high-temperature power source from the vehicle.

[0017] In the above scheme, preferably, the temperature-sensing locking component includes a bimetallic strip and a first elastic locking pin. The battery mounting bracket has a locking hole. The first elastic locking pin extends to lock the battery assembly on the battery mounting bracket. One end of the first pull rope is connected to the rear end of the first elastic locking pin, and the other end is connected to the bimetallic strip. When the temperature rises to the critical temperature, the bimetallic strip deforms and pulls the first elastic locking pin to unlock.

[0018] In the above scheme, preferably, the vehicle body is provided with a central control unit, which is equipped with an independent power supply for the operation of the vehicle control system. The central control unit is equipped with a zero-speed detection unit. The zero-speed unlocking component includes a blocking component and a second elastic locking pin. The second elastic locking pin is set on the battery mounting bracket to lock the battery assembly. The upper end of the blocking component is provided with a sliding cover, and a pull ring is provided inside. The rear end of the second elastic locking pin is connected to one end of a second pull rope, and the other end is connected to the pull ring. When the vehicle is at zero speed, the sliding cover can be unlocked and opened.

[0019] The beneficial effects of this invention are as follows: This invention provides a battery pack structure and an electric off-road motorcycle. When the battery temperature is too high, the first battery assembly is unlocked from the vehicle, and the power transmission to the vehicle is automatically cut off, so that the battery stops outputting power and stops further temperature rise. At the same time, the vehicle loses power and slows down until it stops. After the vehicle stops, the operator can pull the switch to quickly drop the battery assembly downwards, thereby safely and quickly removing the high-temperature power source from the vehicle. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2 This is a cross-sectional view of the present invention.

[0022] Figure 3 This is a schematic diagram of the battery assembly of the present invention.

[0023] Figure 4 This is a schematic diagram of the battery casing of the present invention.

[0024] Figure 5 This is a longitudinal sectional view of the battery assembly of the present invention.

[0025] Figure 6 This is a cross-sectional view of the battery assembly in the heat dissipation state of the present invention.

[0026] Figure 7 This is a cross-sectional view of the battery assembly in its sealed state according to the present invention.

[0027] Figure 8 This is a partial enlarged view of the shielding component of the present invention.

[0028] Figure 9This is a partial enlarged view of the temperature-sensing locking component of the present invention. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1

[0030] See Figures 1-9 A battery pack structure and an electric off-road motorcycle are disclosed, comprising a vehicle body 1, a battery assembly 2, and a central control unit 4. A battery mounting bracket 11 is fixedly installed on the frame inside the vehicle body 1, and a mudguard is connected to the battery mounting bracket 11 by upper and lower clips. The battery assembly 2 is installed on the battery mounting bracket 11, and when the battery assembly falls downward, the battery assembly 2 presses against the mudguard. Under the action of the battery assembly 2, the mudguard connected by clips automatically falls downward. The battery assembly 2 provides power to the vehicle body 1. The central control unit 4 is installed on the vehicle body 1 and has an independent power supply inside. The independent power supply powers the control system of the vehicle body 1, so that when the battery assembly 2 is disconnected from the vehicle body 1, the vehicle's control system can still be used normally. 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.

[0031] The battery mounting bracket 11 features a design with four L-shaped guide edges and an opening at the bottom. The battery assembly 2 includes a temperature-sensing locking component 21, a battery housing 22, and a battery body 23. The battery housing 22 is cubic in shape. The L-shaped guide edges of the battery mounting bracket 11 provide guide grooves for the battery housing 22. The battery assembly 2 is guided and slidably mounted on the four L-shaped guide edges via the battery housing 22. Guide rails are provided on the upper and lower end faces inside the battery housing 22. Guide blocks are provided on the battery body 23, which is guided and slidably mounted on the guide rails and locked onto the guide rails by locking components. This allows the battery body 23 to be fixedly connected to the battery housing 22 to form a whole. Guide blocks are provided at both the top and bottom, and the locking element is an elastic telescopic block. The upper and lower elastic telescopic blocks are respectively connected to the positive and negative electrodes of the battery body 23 through wires. The guide rail is provided with a locking groove, 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. The electrode contact piece is connected to the power male plug provided on the battery housing 22 through wires. The battery mounting bracket 11 is provided with a power female plug. The male plug and 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 the battery body 23 can slide on the guide rail inside the battery housing 22.

[0032] The temperature-sensitive locking component 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 bracket 11. The first elastic locking pin 212 is elastically slidably disposed on the battery housing 22. The bimetallic strip 211 is disposed inside the battery body 23, and a first pull cord 213 connects the bimetallic strip 211 and the first elastic locking pin 212. In the initial state, the battery body 23 is locked inside the battery housing 22, at which time the first elastic locking pin 212 is extended, and the first pull cord 213 is taut. When the battery assembly 212 is installed... When the battery is mounted on the mounting bracket 11, the first elastic locking pin 212 is pushed inward, which allows the battery housing 22 to move upward along the four L-shaped guide edges. After the battery is mounted 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 inserts into the locking hole, thereby locking the battery assembly 2 onto the mounting bracket 11. When the temperature inside the battery body 23 rises to the set temperature, the bimetallic strip 211 deforms, and the first elastic locking pin 212 is pulled into the battery housing 22 by the first pull rope 213, thereby unlocking the temperature-sensing locking member 21.

[0033] The battery mounting bracket 11 is also equipped with a zero-speed unlocking component, which includes a shield 31, a second pull cord 32, and a second elastic locking pin 33. The shield 31 is located near the handlebars and has an internal cavity. A pull ring 311 is slidably positioned within the cavity, and a sliding cover 312 is elastically slidably positioned at the upper end of the cavity. The second elastic locking pin 33 is located on the L-shaped guide edge of the battery mounting bracket 11. A locking hole is formed on the front 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. One end of the second pull rope 32 is connected to the rear end of the second elastic locking pin 33, and the other end is connected to the pull ring 311. Pulling the pull ring 311 can pull the second elastic locking pin 33 backward, thereby unlocking it. There is an electronically controlled locking component on the sliding cover 312, and a vehicle zero-speed detection unit is set in the central control unit 4. After the vehicle stops, the central control unit 4 controls the electronically controlled locking component to unlock, so that the operator can open the sliding cover 312 and pull the pull ring 311. The electronically controlled locking component 313 can be an electromagnet with a magnetic block or an electric telescopic pin with a locking hole.

[0034] The battery assembly 2 is locked to the battery mounting bracket 11 by the combined action of the zero-speed unlocking component and the temperature-sensing locking component 21. After the temperature of the battery assembly rises to the set temperature, the temperature-sensing locking component 21 unlocks first. After the temperature-sensing locking component 21 unlocks, the vehicle's motor is powered off. After the vehicle stops, the operator can unlock the zero-speed unlocking component by pulling the pull ring, which will cause the battery assembly 2 to automatically slide down from the battery mounting bracket 11. This enables the battery to activate the automatic protection mechanism when it overheats. After the vehicle stops, the rider can quickly remove the battery to ensure the safety of the vehicle.

[0035] At the same time, when the battery temperature reaches the set temperature, the central control unit 4 can display the battery overheating and activate the overheat protection, reminding the rider of the overheating battery in time so that it can prepare to deal with it. Example 2

[0036] Based on Embodiment 1, Embodiment 2 has further improvements, specifically as follows: See Figures 1-9 A front plate 222 is elastically guided and slidably disposed at the front end of the battery housing 22. The front plate 222 is also locked to the guide rail by a separate first elastic locking pin 212. At the same time, multiple air inlets 221 are evenly opened on the rear end face of the front plate 222 and the battery housing 22. When the battery body 23 is locked on the guide rail, a fluid channel for air circulation is left between the battery body 23 and the inner wall of the battery housing 22. An air guide shroud is disposed around the air inlets 221 of the front plate 222. When the vehicle is in motion, air is introduced into the air inlets 221 from the air guide shroud. The air guide shroud is larger than the air inlets 221, thereby increasing the airflow speed. The air flows out from the air inlets 221 on the rear end face of the battery housing 22. When flowing through the battery body 23, the increased airflow speed can better dissipate heat from the battery body 23.

[0037] Multiple air inlet slots 223 are evenly provided on the side wall of the battery casing 22. Air guide plates 224 are elastically rotatably installed on the air inlet slots 223. The side of the air guide plate 224 located inside the battery casing 22 is elastically pressed against the side wall of the battery body 23. An opening slot 2241 is provided on the side of the air guide plate 224 located inside the battery casing 22, so that the airflow is not blocked by the inner side plate of the air guide plate 224. When the air guide plate 224 is in the open state, it is tilted forward, so the airflow passing from the side of the battery casing 22 is guided by the air guide plate 224 into the battery casing 22 to dissipate heat from the battery body 23 inside. Conical heat dissipation blocks 231 are evenly provided upward around the battery body 23. The conical heat dissipation blocks 231 on the front and rear end faces are consistent with the air inlets 221 on the front face 222 and the rear end face of the battery casing 22. 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.

[0038] In the initial state, airflow is guided into the battery housing 22 through the air guide shroud of the front panel 222. At the same time, the side air guide 224 is also in the open state, guiding the airflow passing by the side into the battery housing 22, thereby lowering 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 unlocking the front panel 222. The front end of the front panel 222 elastically contacts the elastic element, and under the action of the elastic element, it moves backward. One end of the third pull rope is connected to the front panel 222, and the other end is connected to the rear end of the elastic telescopic block. Therefore, during the backward movement of the front panel 222, the lock between the battery body 23 and the guide rail is unlocked by the third pull rope, allowing the battery body 23 to slide on the guide rail. At this time, the power connection between the battery body 23 and the vehicle is disconnected.

[0039] The front panel 222 moves backward and touches the battery body 23, thereby causing the battery body 23 to move backward as well, so that the rear end of the battery body 23 touches the rear end face of the battery casing 22. At the same time, when the front panel 222 touches the battery body 23, the air inlet 221 on the front panel 222 touches the conical heat sink 231. When the battery body 23 touches the rear end face, the air inlets 221 on the front end face 222 and the rear end face of the battery casing 22 are blocked by the front and rear conical heat sinks 231 on the battery body 23, thereby sealing the front and rear ends of the battery casing 22. During the process of the battery body 23 moving backward, the conical heat sink 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, thus keeping the inside of the battery casing 22 in a sealed state, thereby preventing the battery body 23 from burning due to unstable high temperature.

[0040] After the vehicle stops due to power failure, the operator can open the sliding cover 312 and then pull the pull ring 311, causing the sealed battery assembly 2 to automatically fall downwards.

[0041] Its working principle or usage method is as follows:

[0042] In the initial state, the airflow during normal vehicle operation is guided from the air duct of the front panel 222 into the battery housing 22. The side air duct 224 is also in the open state, guiding the airflow passing by the side into the battery housing 22, thereby reducing the temperature of the battery body 23.

[0043] 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-sensing locking member 21 is in the unlocked state.

[0044] The front panel 222 is unlocked, and under the action of the elastic element, the front panel 222 moves backward. The third pull rope unlocks the lock between the battery body 23 and the guide rail, allowing the battery body 23 to slide on the guide rail. At this time, the power connection between the battery body 23 and the vehicle is disconnected.

[0045] The front end plate 222 moves backward and touches the battery body 23, causing the battery body 23 to move backward together. This causes the rear end of the battery body 23 to touch the rear end face of the battery housing 22. The air inlets 221 on the front end face 222 and the rear end face of the battery housing 22 are blocked by the front and rear conical heat dissipation blocks 231 on the battery body 23, thereby sealing the front and rear ends of the battery housing 22. Meanwhile, the conical heat dissipation blocks 231 on the side wall of the rearward-moving battery body 23 touch the air guide plate 224, causing the air guide plate 224 to rotate and thus sealing the side air inlet slot 223. This keeps the inside of the battery housing 22 sealed, thereby preventing the battery body 23 from burning due to unstable high temperature.

[0046] After the vehicle stops due to power failure, the operator opens the sliding cover 312 and then pulls the pull ring 311, causing the sealed battery assembly 2 to fall down automatically.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate 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); 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); and a temperature-sensitive locking member (21) is arranged in the battery assembly (2); 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) is locked on the battery housing (22) by a temperature-sensitive locking member (21); The battery body (23) is locked on the battery housing (22) by the elastic telescopic block; When the temperature of the battery body (23) rises, the lock of the front end plate (222) is released, the front end plate (222) moves backward, the air inlet (221) is blocked by the conical heat sink (231), the front end plate (222) is unlocked and slides backward, and the battery body (23) is unlocked simultaneously, the front end plate (222) contacts the battery body (23) and drives the battery body (23) to slide backward and press against the rear end plate of the battery housing (22), the air inlet (221) on the front end plate (222) and the rear end plate of the battery housing (22) is blocked by the conical heat sink (231), and the battery body (23) is then enclosed and wrapped by the battery housing (22); The temperature-sensitive locking member (21) is automatically unlocked when the temperature reaches a set value. One end of a 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, when the front end plate (222) moves 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. At this time, the power connection between the battery body (23) and the vehicle is disconnected, causing the vehicle to lose power.

2. A battery pack structure according to claim 1, characterized in that: The front end plate (222) 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 battery body (23) slides backwards, and the conical heat dissipation block (231) on the side of the battery body (23) contacts the air guide plate (224) and rotates to block 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.

7. A battery pack structure according to claim 4, 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), the battery assembly (2) is arranged on the battery mounting frame (11) in a guide sliding manner, a zero-speed unlocking member is arranged on the battery mounting frame (11), and both the temperature-sensitive locking member (21) and the zero-speed unlocking member are used to lock the battery assembly (2) on the battery mounting frame (11); The zero-speed unlocking component is used to identify the vehicle's motion status, and the unlocking operation can only be performed after the vehicle stops; After the temperature-sensitive locking member (21) and the zero-speed unlocking member are both unlocked, 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 8, 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), a zero-speed unlocking member 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 shielding member (31), a 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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