Battery locking mechanism, vehicle body support and electric vehicle

Abstract

This invention discloses a battery locking mechanism, a vehicle body bracket, and an electric vehicle for locking an electric vehicle battery pack. The battery locking mechanism includes a housing, a first slider, a second slider, and a first elastic member. The housing has an inner cavity, and the first slider can move between a first position and a second position within the inner cavity. The first elastic member is connected to the housing and the first slider and drives the first slider to move to the first position. The second slider is disposed in the inner cavity and can move under external force, pushing the first slider from the first position to the second position. This invention uses the first elastic member to hold the first slider in a predetermined first position, allowing the battery locking shaft to freely enter and exit the battery locking mechanism. The second slider drives the first slider to move to a predetermined second position, whereby the battery locking shaft is restricted by a limiting part on the first slider, preventing it from leaving the battery locking mechanism, thereby achieving the locking of the battery pack.

Description

Technical Field

[0001] This invention relates to a battery locking mechanism, a vehicle body bracket, and an electric vehicle. Background Technology

[0002] Existing electric vehicle battery pack installation methods are generally divided into fixed and replaceable types. Fixed battery packs are usually fixed to the vehicle, and the vehicle is used as the charging object during charging. Replaceable battery packs, on the other hand, are usually installed in a movable manner, allowing the battery pack to be removed and replaced with a new one at any time.

[0003] The process of replacing a battery pack involves locking and unlocking it. Generally, locking shafts are installed on both sides of the battery pack; the locking mechanism is fixed to a bracket to assemble a quick-change body frame, which is then installed onto the chassis beam of the electric vehicle; the locking shafts cooperate with the locking mechanism to lock the battery pack. Currently, the locking mechanism locks the locking shaft in an L-shaped groove. The drawback is that the locking shaft can move along the L-shaped groove in the direction of the vehicle's front and rear, resulting in poor locking stability. Some existing locking mechanisms use rotating gears to drive a rack to rotate and lock the locking shaft out of the channel, which is structurally complex. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a new battery locking mechanism, a vehicle body bracket, and an electric vehicle for locking the battery pack of an electric vehicle.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This invention provides a battery locking mechanism for locking an electric vehicle battery pack. The battery locking mechanism includes a housing, a first slider, a second slider, and a first elastic member. The housing has an inner cavity. The first slider can move between a first position and a second position within the inner cavity. The first elastic member is connected to the housing and the first slider. The first elastic member is used to drive the first slider to move to the first position. The second slider is disposed in the inner cavity and can move under the action of an external force, pushing the first slider from the first position to the second position.

[0007] A locking shaft channel extending from the edge of the housing into the inner cavity is formed on the housing, and the locking shaft channel communicates the inner cavity with the external environment of the inner cavity. The first slider is provided with a limiting part for restricting the battery locking shaft. When the first slider is in the first position, the battery locking shaft can be inserted into the inner cavity along the locking shaft channel. When the first slider is in the second position, the limiting part prevents the battery locking shaft from sliding out along the locking shaft channel.

[0008] In this solution, the above-mentioned structure is adopted. The first elastic element keeps the first slider in a predetermined first position so that the battery lock shaft can freely enter and exit the battery locking mechanism through the lock shaft channel. The second slider drives the first slider to move to a predetermined second position so that the battery lock shaft can be restricted by the limiting part on the first slider, preventing it from leaving the battery locking mechanism, thereby achieving the locking of the battery pack. The structure is simple and has high stability.

[0009] Preferably, the first slider is disposed in the inner cavity and can slide back and forth in a first direction, the second slider is disposed in the inner cavity and can slide back and forth in a second direction under the action of external force, and the insertion direction of the locking shaft channel is a third direction.

[0010] In this solution, by limiting the movement paths of the first and second sliders, the situation where the battery locking mechanism cannot properly lock the battery locking shaft is avoided due to the offset of the first and second sliders.

[0011] Preferably, the first direction is perpendicular to the second direction; and / or,

[0012] The first direction is perpendicular to the third direction.

[0013] In this solution, by adopting the above structure, it is convenient to drive the first slider to move through the second slider. The first direction is perpendicular to the third direction, that is, the direction in which the first slider locks the battery lock shaft in the third direction is perpendicular to the direction of movement of the first slider, thus ensuring the safety and stability of locking.

[0014] Preferably, the first slider has a first guide surface, and the second slider has a second guide surface. The first guide surface and the second guide surface cooperate to slide and drive the first slider to move from the first position to the second position.

[0015] In this design, the guide surfaces of the two sliders work together to allow the second slider to push the first slider to move. The structure is simple and ensures the smoothness of the first slider's movement.

[0016] Preferably, the lower end of the first guide surface has a first slot, the second slider has a locking part, the second guide surface is located at the end of the locking part that abuts against the first guide surface, and when the first slider is in the second position, the locking part is locked in the first slot.

[0017] In this solution, a first slot is provided at the lower end of the first guide surface and engages with the engaging part of the second slider, so that the first slider and the second slider are locked together. This prevents the second slider from being in a free state after the external drive mechanism stops applying force, and avoids the situation where the first slider moves back to the first position under the action of the first elastic element. This prevents the battery locking shaft from cooperating with the limiting part on the first slider to lock the battery pack.

[0018] Preferably, the first slot and the first guide surface are transitioned by an arc-shaped surface; and / or,

[0019] The limiting part is a groove, and the upper end of the first slot is not higher than the bottom of the groove.

[0020] In this design, the first slot and the first guide surface are transitioned by an arc-shaped surface, which facilitates the smooth sliding of the second slider's locking part from the first guide surface into the first slot. The limiting part is set in the form of a groove, which makes it difficult for the battery lock shaft to disengage from the limiting part, ensuring the safety of battery locking. The upper end of the first slot is set not higher than the bottom of the groove, so that the first slider restricts the movement of the second slider under the weight of the battery pack, preventing the second slider from being in a free state and resetting after the external drive mechanism stops applying force, which would be inconvenient for subsequent disassembly of the battery pack.

[0021] Preferably, the upper end of the first guide surface has a second slot, and the second slot and the first guide surface are transitioned by an arc surface. When the first slider is in the first position, the locking part is locked in the second slot.

[0022] In this design, a second slot is provided at the upper end of the first guide surface to define the first position of the first slider.

[0023] Preferably, the two opposing inner sidewalls of the housing cavity have first guide grooves extending along the first direction, and the first slider has a first guide portion that slides in conjunction with the first guide grooves; and / or

[0024] The inner cavity of the housing has two opposing inner sidewalls with second guide grooves extending in a second direction, and the second slider has a second guide portion that slides in cooperation with the second guide grooves.

[0025] In this solution, by setting guide grooves for the first and second sliders, not only can the movement of the first and second sliders be guided, but also when the battery locking mechanism locks the battery pack, the jumping of the first and second sliders due to force can be avoided from affecting the locking operation.

[0026] Preferably, the limiting portion is a groove opening in a third direction, and the locking shaft channel is a U-shaped groove opening in a direction opposite to the third direction; and / or,

[0027] The sidewall of the housing has a guide channel extending along the second direction, and the second slider has a force-receiving part extending out of the housing. The force-receiving part is connected to an external drive mechanism so that the external drive mechanism drives the second slider to move within the guide channel.

[0028] In this design, the limiting part and the locking shaft channel adopt the above structure, which facilitates the battery locking shaft of the battery pack to enter the battery locking mechanism from bottom to top, and is stuck in the groove under the gravity of the battery pack, making it difficult to fall off; a force-bearing part is provided on the second slider to facilitate the driving of the external drive mechanism.

[0029] Preferably, the battery locking mechanism further includes a second elastic element, the two ends of which are respectively connected to the second slider and the housing. The second elastic element is used to apply a force to the second slider to move the second slider and push the first slider to move from the first position to the second position.

[0030] In this solution, by setting a second elastic element, the second slider is always subjected to the force of the second elastic element, which avoids the second slider being in a free state after the external driving mechanism stops applying force, and the first slider moving back to the first position under the action of the first elastic element. This prevents the battery lock shaft from cooperating with the limiting part on the first slider to lock the battery pack.

[0031] Preferably, the force exerted by the first elastic element on the first slider is greater than the force exerted by the second elastic element on the second slider to cause the second slider to push the first slider to move.

[0032] In this solution, by setting the force applied by the first elastic element to the first slider to be greater than the force applied by the second elastic element to the second slider to push the first slider to move, the locking shaft channel of the battery locking shaft mechanism remains open before the locking shaft of the battery pack enters, which facilitates the entry of the battery locking shaft.

[0033] Preferably, both the first elastic element and the second elastic element are rectangular springs.

[0034] In this design, the first and second elastic elements are rectangular springs, which have a large load-bearing capacity and prevent elastic failure from affecting use.

[0035] The present invention also provides a vehicle body bracket, the vehicle body bracket including the battery locking mechanism described above.

[0036] Preferably, the vehicle body bracket is provided with a plurality of the battery locking mechanisms, and the vehicle body bracket is mounted on the beam of the electric vehicle.

[0037] In this solution, multiple battery locking mechanisms are installed on the vehicle frame to ensure the stability of the battery pack locking and prevent the battery pack from falling due to the failure of one of the battery locking mechanisms. At the same time, setting multiple battery locking mechanisms can improve the load-bearing capacity of the vehicle frame and prevent the battery pack from falling due to insufficient load-bearing capacity of the battery locking mechanisms.

[0038] Preferably, the vehicle body bracket further includes a drive mechanism for driving the second slider to move.

[0039] In this solution, by setting a drive mechanism on the vehicle body bracket, it is convenient to synchronously control the battery locking mechanism when installing the battery pack, so that the battery locking shaft can smoothly enter the battery locking mechanism and be locked.

[0040] Preferably, the driving mechanism includes a locking link and a plurality of driving rods, with each second slider of the battery locking mechanism correspondingly connected to one of the driving rods, and the plurality of driving rods being driven synchronously through the locking link.

[0041] In this solution, multiple drive rods are synchronously driven by locking linkages to control multiple battery locking mechanisms on the same side of the vehicle body bracket, thus avoiding the situation where the second slider of an individual battery locking mechanism is not driven synchronously, which would prevent the battery locking shaft from locking smoothly.

[0042] The present invention also provides an electric vehicle comprising the body support described above.

[0043] The positive and progressive effects of this invention are as follows:

[0044] The present invention uses a first elastic element to keep the first slider in a predetermined first position so that the battery locking shaft can freely enter and exit the battery locking mechanism through the locking shaft channel. The second slider drives the first slider to move to a predetermined second position so that the battery locking shaft can be restricted by the limiting part on the first slider, preventing it from leaving the battery locking mechanism, thereby achieving the locking of the battery pack. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the battery locking mechanism in Embodiment 1 of the present invention.

[0046] Figure 2 for Figure 1 Exploded view of the battery locking mechanism.

[0047] Figure 3 for Figure 1 Cross-sectional view of the battery locking mechanism.

[0048] Figure 4This diagram illustrates the relative positions of the battery lock shaft and the first slider after the battery lock shaft is inserted into the battery locking mechanism when the first slider is in the first position.

[0049] Figure 5 This is a diagram showing the locked state after the battery lock shaft is inserted into the battery locking mechanism.

[0050] Figure 6 This is a schematic diagram showing the relative positions of the first slider and the second slider when the first slider moves to the first position in Embodiment 1 of the present invention.

[0051] Figure 7 This is a schematic diagram showing the relative positions of the first slider and the second slider when the first slider moves to the second position in Embodiment 1 of the present invention.

[0052] Figure 8 This is a schematic diagram of the vehicle body bracket in Embodiment 2 of the present invention.

[0053] Figure 9 for Figure 7 Enlarged view of the structure at point A in the middle.

[0054] Figure 10 This is a schematic diagram of the installation of the vehicle body bracket on an electric vehicle.

[0055] Explanation of reference numerals in the attached figures:

[0056] 100 shell

[0057] Inner cavity 110

[0058] Locking channel 120

[0059] First limiting rod 101

[0060] Second limiting rod 102

[0061] First guide groove 103

[0062] Second guide groove 104

[0063] Guide Channel 105

[0064] First slider 200

[0065] Limiting part 201

[0066] First card slot 202

[0067] Second card slot 203

[0068] First Guiding Section 204

[0069] First guide surface 205

[0070] Second slider 300

[0071] Force-bearing part 301

[0072] 302 Connector

[0073] Second guide section 303

[0074] Spring mounting hole 304

[0075] First elastic element 400

[0076] Second elastic element 500

[0077] Battery lock shaft 600

[0078] Body bracket 10

[0079] Support frame 11

[0080] Installation component 12

[0081] Locking rod 13

[0082] Drive lever 14

[0083] Battery pack 20

[0084] Electric vehicles 30

[0085] Car beam 31 Detailed Implementation

[0086] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the following embodiments.

[0087] Example 1

[0088] like Figures 1 to 7As shown, an embodiment of the present invention provides a battery locking mechanism for locking an electric vehicle battery pack. The battery locking mechanism includes a housing 100, a first slider 200, a second slider 300, and a first elastic member 400. The housing 100 has an inner cavity 110. The first slider 200 can move between a first position and a second position within the inner cavity 110. The first elastic member 400 is connected to the housing 100 and the first slider 200. The first elastic member 400 is used to drive the first slider 200 to move to the first position. The second slider 300 is disposed in the inner cavity 110 and can move under the action of an external force, pushing the first slider 200 from the first position to the second position. A locking shaft channel 120 extending from the edge of the housing 100 into the inner cavity 110 is formed on the housing 100. The locking shaft channel 120 connects the inner cavity 110 with the external environment of the inner cavity 110. A limiting part 201 for limiting the battery locking shaft 600 is provided on the first slider 200. When the first slider 200 is in the first position, the battery locking shaft 600 can be inserted into the inner cavity 110 along the locking shaft channel 120. When the first slider 200 is in the second position, the limiting part 201 prevents the battery locking shaft 600 from sliding out along the locking shaft channel 120.

[0089] The battery locking mechanism uses a first elastic member 400 to hold the first slider 200 in a predetermined first position so that the battery locking shaft 600 can freely enter and exit the battery locking mechanism through the locking shaft channel 120. The second slider 300 drives the first slider 200 to move to a predetermined second position so that the battery locking shaft 600 can be restricted by the limiting part 201 on the first slider 200, preventing it from leaving the battery locking mechanism, thereby locking the battery pack.

[0090] The first slider 200 is disposed in the inner cavity 110 and can slide back and forth in a first direction. The second slider 300 is disposed in the inner cavity 110 and can slide back and forth in a second direction under the action of external force. The insertion direction of the locking shaft channel 120 is a third direction. By limiting the movement path of the first slider 200 and the second slider 300, the situation where the first slider 200 and the second slider 300 are misaligned, resulting in the battery locking mechanism failing to lock the battery locking shaft 600 normally, is avoided.

[0091] The first direction is perpendicular to the second direction; the first direction is also perpendicular to the third direction. This means the movement direction of the first slider 200 is perpendicular to the direction of the battery locking shaft 600, ensuring the safety and stability of the battery pack locking. In this embodiment, after the battery locking mechanism is installed on the electric vehicle, the first direction is the length direction of the vehicle body, the second direction is the height direction of the vehicle body, and the third direction is the upward direction. Through the guide channel 105 and the limiting part 201, the battery locking shaft 600 can be locked and fixed in the length direction and the vertical direction of the vehicle body. By adopting the above structure, it is convenient for the second slider 300 to drive the first slider 200 to move.

[0092] In some other embodiments, the first direction, the second direction, and the third direction are not limited to the above settings and can be reasonably set according to actual needs, which will not be elaborated here.

[0093] like Figures 2 to 7 As shown, the first slider 200 has a first guide surface 205, and the second slider 300 has a second guide surface. The first guide surface 205 and the second guide surface cooperate to slide and drive the first slider 200 to move from a first position to a second position. Through the cooperation of the guide surfaces of the two sliders, the second slider 300 pushes the first slider 200 to move. The structure is simple and can ensure the smooth movement of the first slider 200.

[0094] like Figure 6 and Figure 7 As shown, the lower end of the first guide surface 205 has a first slot 202, and the second slider 300 has a locking part 302. The second guide surface (not shown in the figure) is located at the end where the locking part 302 abuts against the first guide surface 205. When the first slider 200 is in the second position, the locking part 302 is locked in the first slot 202. By setting the first slot 202 at the lower end of the first guide surface 205 and locking it with the locking part 302 of the second slider 300, the first slider 200 and the second slider 300 are locked together. This prevents the second slider 300 from being in a free state after the external driving mechanism stops applying force, thus preventing the first slider 200 from moving back to the first position under the action of the first elastic member 400. This also prevents the battery locking shaft 600 from cooperating with the limiting part 201 on the first slider 200 to lock the battery pack.

[0095] The first slot 202 and the first guide surface 205 are connected by an arc-shaped surface, which facilitates the smooth sliding of the locking part 302 of the second slider 300 from the first guide surface 205 into the first slot 202.

[0096] In this embodiment, the limiting part 201 is a groove, specifically an arc-shaped groove. The groove can also be of other shapes, as long as it allows the battery locking shaft 600 to enter and prevents the battery locking shaft 600 from leaving the locking shaft channel 120. The upper end of the first slot 202 is not higher than the bottom of the groove. By setting the limiting part 201 in the form of a groove, the battery locking shaft 600 is not easily disengaged from the limiting part 201, ensuring the safety of battery locking. Setting the upper end of the first slot 202 not higher than the bottom of the groove allows the first slider 200 to restrict the movement of the second slider 300 under the weight of the battery pack, preventing the second slider 300 from being in a free state and resetting after the external driving mechanism stops applying force, which would be inconvenient for subsequent disassembly of the battery pack.

[0097] In this embodiment, the opening of the groove faces a third direction (i.e., the opening of the groove faces upward), and the locking shaft channel 120 is a U-shaped groove with an opening direction opposite to the third direction (i.e., the opening of the locking shaft channel 120 faces downward). The limiting part 201 and the locking shaft channel 120 adopt the above structure, facilitating the entry of the battery locking shaft 600 of the battery pack into the battery locking mechanism from bottom to top, and ensuring it is locked in the groove under the weight of the battery pack, preventing it from easily falling out. In this embodiment, the battery locking shaft 600 is cylindrical, the bottom of the groove is an arc-shaped groove with an opening facing a third direction, and the top of the U-shaped groove is arc-shaped, facilitating circumferential engagement with the cylindrical battery locking shaft 600 to improve locking stability.

[0098] like Figure 1 and Figure 2 As shown, the side wall of the housing 100 has a guide channel 105 extending in a second direction. The second slider 300 has a force-receiving part 301 extending out of the housing 100. The force-receiving part 301 is connected to an external drive mechanism, which drives the second slider 300 to move within the guide channel 105. The force-receiving part 301 is provided on the second slider 300 to facilitate the drive of the external drive mechanism, thereby causing the second slider 300 to move the first slider 200 from a first position to a second position, so that the battery lock shaft 600 can be placed in the corresponding limiting part 201 (groove) to lock the battery pack.

[0099] like Figure 6 and Figure 7 As shown, the upper end of the first guide surface 205 has a second slot 203. The second slot 203 and the first guide surface 205 are transitioned by an arc-shaped surface. When the first slider 200 is in the first position, the locking part 302 is engaged in the second slot 203. By providing the second slot 203 at the upper end of the first guide surface 205, the first position of the first slider 200 is defined.

[0100] like Figure 2As shown, the inner cavity 110 of the housing 100 has two opposing inner sidewalls with first guide grooves 103 extending in a first direction, and the first slider 200 has a first guide portion 204 that slides in cooperation with the first guide grooves 103. The inner cavity 110 of the housing 100 has two opposing inner sidewalls with second guide grooves 104 extending in a second direction, and the second slider 300 has a second guide portion 303 that slides in cooperation with the second guide grooves 104. By providing guide grooves for the first slider 200 and the second slider 300, not only can the movement of the first slider 200 and the second slider 300 be guided, but also when the battery locking mechanism locks the battery pack, it can prevent the first slider 200 and the second slider 300 from jumping due to force, thus affecting the locking operation.

[0101] like Figures 2 to 5 As shown, the battery locking mechanism also includes a second elastic element 500. The two ends of the second elastic element 500 are respectively connected to the second slider 300 and the housing 100. The second elastic element 500 is used to apply a force to the second slider 300, causing it to move and push the first slider 200 from the first position to the second position. By providing the second elastic element 500, the second slider 300 is always subjected to the force of the second elastic element 500, preventing the second slider 300 from being in a free state after the external driving mechanism stops applying force, thus preventing the first slider 200 from moving back to the first position under the action of the first elastic element 400. This prevents the battery locking shaft 600 from cooperating with the limiting part 201 on the first slider 200 to lock the battery pack.

[0102] In this embodiment, the force applied by the first elastic member 400 to the first slider 200 is greater than the force applied by the second elastic member 500 to the second slider 300, causing the second slider 300 to push the first slider 200 to move. By setting the force applied by the first elastic member 400 to the first slider 200 to be greater than the force applied by the second elastic member 500 to the second slider 300, causing the second slider 300 to push the first slider 200 to move, the locking shaft channel 120 of the battery locking shaft 600 mechanism remains open before the locking shaft of the battery pack enters, facilitating the entry of the battery locking shaft 600.

[0103] In this embodiment, both the first elastic element 400 and the second elastic element 500 are rectangular springs. The use of rectangular springs for both the first elastic element 400 and the second elastic element 500 provides a large load-bearing capacity, preventing elastic failure from affecting use. Figures 3 to 7As shown, the housing 100 has a horizontally arranged first limiting rod 101 and a vertically arranged second limiting rod 102. The spring of the first elastic member 400 is sleeved on the first limiting rod 101, with both ends abutting between the inner wall of the housing 100 and the first slider 200, respectively. The first elastic member 400 is always in a compressed state. The upper end face of the second slider has a spring mounting hole 304. The second elastic member 500 is sleeved on the second limiting rod 102, with one end abutting against the inner wall of the housing 100 and the other end extending into the spring mounting hole 304 to abut against the second slider 300. The second elastic member 500 is also always in a compressed state.

[0104] Example 2

[0105] like Figure 8 and Figure 10 As shown, this embodiment provides a vehicle body bracket 10, which includes a battery locking mechanism as described in Embodiment 1.

[0106] The vehicle body bracket 10 includes a bracket frame 11, which is a rectangular structure. Multiple battery locking mechanisms are correspondingly installed on two opposing longitudinal beams of the bracket frame 11. Mounting members 12 are provided at both ends of the two longitudinal beams of the bracket frame 11. The bracket frame 11 of the vehicle body bracket 10 is fixedly mounted to the vehicle beam of the electric vehicle via the mounting members 12. By installing multiple battery locking mechanisms on the vehicle body bracket 10, the stability of the battery pack locking is ensured, preventing the battery pack from falling due to the failure of one battery locking mechanism. Simultaneously, installing multiple battery locking mechanisms can improve the load-bearing capacity of the vehicle body bracket 10, preventing the battery pack from falling due to insufficient load-bearing capacity of the battery locking mechanisms.

[0107] like Figure 8 and Figure 9 As shown, the vehicle body bracket 10 also includes a drive mechanism for driving the second slider 300 to move. By providing a drive mechanism on the vehicle body bracket 10, it is convenient to synchronously control the battery locking mechanism during battery pack installation, so that the battery locking shaft 600 can smoothly enter the battery locking mechanism and be locked.

[0108] Specifically, the drive mechanism includes a locking link 13 and multiple drive rods 14. The second slider 300 of each battery locking mechanism is connected to a corresponding drive rod 14, and the multiple drive rods 14 are driven synchronously through the locking link 13. By synchronously driving the multiple drive rods 14 through the locking link 13, multiple battery locking mechanisms on the same side of the vehicle body bracket 10 are controlled, avoiding the situation where the second slider 300 of individual battery locking mechanisms is not driven synchronously, resulting in the battery locking shaft 600 failing to lock smoothly.

[0109] like Figure 10As shown, this embodiment also provides an electric vehicle 30, which includes the aforementioned vehicle body bracket 10. The vehicle body bracket 10 is fixed to the vehicle beam 31 by a mounting member 12, and the battery locking shaft 600 of the battery pack 20 is inserted into the locking shaft channel 120 of the battery locking mechanism and locked.

[0110] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A battery lock mechanism for locking of a battery pack of an electric vehicle, characterized in that, The battery locking mechanism includes a housing, a first slider, a second slider, and a first elastic element. The housing has an inner cavity, and the first slider can move between a first position and a second position in the inner cavity. The first elastic element is connected to the housing and the first slider. The first elastic element is used to drive the first slider to move to the first position. The second slider is disposed in the inner cavity and can move under the action of an external force and push the first slider from the first position to the second position. A locking shaft channel extending from the edge of the housing into the inner cavity is formed on the housing, the locking shaft channel communicating with the external environment of the inner cavity. The first slider is provided with a limiting part for restricting the battery locking shaft. When the first slider is in the first position, the battery locking shaft can be inserted into the inner cavity along the locking shaft channel. When the first slider is in the second position, the limiting part prevents the battery locking shaft from sliding out along the locking shaft channel. The first slider has a first guide surface, and the second slider has a second guide surface. The first guide surface and the second guide surface cooperate to slide and drive the first slider to move from the first position to the second position. The lower end of the first guide surface has a first slot, and the second slider has a locking part. The second guide surface is located at the end where the locking part abuts against the first guide surface. When the first slider is in the second position, the locking part is locked in the first slot.

2. The battery lock mechanism of claim 1, wherein, The first slider is disposed in the inner cavity and can slide back and forth in a first direction. The second slider is disposed in the inner cavity and can slide back and forth in a second direction under the action of external force. The insertion direction of the locking shaft channel is a third direction.

3. The battery locking mechanism as described in claim 2, characterized in that, The first direction is perpendicular to the second direction; and / or, The first direction is perpendicular to the third direction.

4. The battery locking mechanism as described in claim 1, characterized in that, The first slot and the first guide surface transition through an arc-shaped surface; and / or, The limiting part is a groove, and the upper end of the first slot is not higher than the bottom of the groove.

5. The battery locking mechanism as described in claim 1, characterized in that, The upper end of the first guide surface has a second slot, and the second slot and the first guide surface are transitioned by an arc surface. When the first slider is in the first position, the locking part is locked in the second slot.

6. The battery locking mechanism as described in claim 2, characterized in that, The inner cavity of the housing has two opposing inner sidewalls with first guide grooves extending along the first direction, and the first slider has a first guide portion that slides in cooperation with the first guide grooves; and / or The inner cavity of the housing has two opposing inner sidewalls with second guide grooves extending along the second direction, and the second slider has a second guide portion that slides in cooperation with the second guide grooves.

7. The battery locking mechanism as described in claim 1, characterized in that, The limiting part is a groove with an opening facing a third direction, and the locking shaft channel is a U-shaped groove with an opening direction opposite to that of the third direction; and / or, The sidewall of the housing has a guide channel extending in a second direction, and the second slider has a force-receiving part extending out of the housing. The force-receiving part is connected to an external drive mechanism, which drives the second slider to move within the guide channel.

8. The battery locking mechanism as described in any one of claims 1-7, characterized in that, The battery locking mechanism further includes a second elastic element, the two ends of which are respectively connected to the second slider and the housing. The second elastic element is used to apply a force to the second slider to move the second slider and push the first slider to move from the first position to the second position.

9. The battery locking mechanism as described in claim 8, characterized in that, The force exerted by the first elastic element on the first slider is greater than the force exerted by the second elastic element on the second slider to cause the second slider to push the first slider to move.

10. The battery locking mechanism as described in claim 8, characterized in that, Both the first elastic element and the second elastic element are rectangular springs.

11. A vehicle body bracket, characterized in that, The vehicle body bracket includes a battery locking mechanism as described in any one of claims 1-10.

12. The vehicle body bracket as described in claim 11, characterized in that, The vehicle body bracket is equipped with multiple battery locking mechanisms, and the vehicle body bracket is mounted on the beam of the electric vehicle.

13. The vehicle body bracket as described in claim 12, characterized in that, The vehicle body bracket also includes a drive mechanism for driving the second slider to move.

14. The vehicle body bracket as described in claim 13, characterized in that, The driving mechanism includes a locking link and multiple driving rods. The second slider of each battery locking mechanism is connected to one driving rod, and the multiple driving rods are driven synchronously through the locking link.

15. An electric vehicle, characterized in that, The electric vehicle includes a body support as described in any one of claims 11-14.

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