Battery replacing device and electric commercial vehicle

Abstract

The invention discloses a battery replacing device and an electric commercial vehicle, and relates to the technical field of electric vehicles, the battery replacing device comprises a battery box and a plug-in assembly, the battery box comprises a box body and a plug-in piece arranged on the outer wall of the box body, and a containing groove used for containing a battery is formed in the box body. The plug-in assembly comprises a shell, a clamping piece and an elastic piece, a clamping groove is formed in the shell, the clamping piece is slidably connected with the shell and can be inserted into or withdrawn from the clamping groove during sliding so as to lock or unlock the plug-in inserted into the clamping groove, and the elastic piece is connected with the clamping piece and can accumulate elastic force when the clamping piece withdraws from the clamping groove. When the battery box needs to be disassembled, the clamping piece is pulled out of the insertion piece in a sliding mode, and the insertion piece can be pulled out of the clamping groove by unlocking the insertion piece. Therefore, in the battery replacement process, only the clamping piece needs to be controlled to slide in a reciprocating mode, screws do not need to be disassembled and assembled frequently, the battery replacement efficiency is high, and the transportation efficiency of a truck is basically not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to a battery replacement device and an electric commercial vehicle. Background Art

[0002] At present, pure electric medium and heavy-duty trucks have received widespread attention and application as an environmentally friendly alternative in heavy-duty transportation. They can not only solve the problem of fuel heavy-duty trucks polluting the environment, but also save energy and reduce costs. Since heavy-duty trucks need to operate at high loads during long-distance transportation, the traditional charging method has the problem of too long charging time, which greatly reduces the operating efficiency of pure electric heavy-duty trucks. Therefore, multiple battery swap stations are usually set up along the truck transportation routes. The batteries on the trucks can be directly replaced by disassembling and assembling without charging, thereby improving transportation efficiency.

[0003] However, the batteries on current medium and heavy-duty trucks are usually fixed to the vehicle using screws. During the battery replacement process, the screws need to be frequently removed and installed, resulting in low battery replacement efficiency, which affects the truck's transportation efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and to propose a battery replacement device and an electric commercial vehicle to solve the technical problem that in the prior art, the batteries on medium and heavy-duty trucks are usually fixed on the vehicle with screws, and during the battery replacement process, the screws need to be frequently removed and installed, resulting in low battery replacement efficiency and affecting the transportation efficiency of the truck.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a battery replacement device, comprising: A battery box, comprising a box body and a plug-in unit arranged on the outer wall of the box body, wherein the box body is provided with a receiving groove for accommodating batteries; and The plug-in assembly includes a shell, a card connector and an elastic member. The shell is provided with a card slot. The card connector is slidably connected to the shell and can be inserted into or withdrawn from the card slot when sliding to lock or unlock the plug-in inserted into the card slot. The elastic member is connected to the card connector and can accumulate elastic force when the card connector withdraws from the card slot.

[0006] In some embodiments, the plug-in assembly also includes a drive motor and a drive gear, the drive gear engages with the card connector, and the drive motor is connected to the drive gear and can drive the drive gear to rotate so that the drive gear drives the card connector to slide back and forth through engagement to insert or exit the card slot.

[0007] In some embodiments, the plug-in assembly also includes a sensor disposed on the shell, which is connected to the drive motor and can send a sensing signal to the drive motor when it is close to the plug-in. When the drive motor receives the sensing signal, it can drive the drive gear to drive the card connector out of the slot.

[0008] In some embodiments, the end of the clamping member away from the clamping slot has a handle, and the handle can drive the clamping member to slide back and forth under the drive of external force to insert into or withdraw from the clamping slot.

[0009] In some embodiments, the shell is provided with a limiting groove, the limiting groove is connected to the card slot, and the plug-in assembly also includes a limiting mechanism located in the limiting groove, and the limiting mechanism can connect the card connector when the card connector passes through the card slot and is inserted into the limiting groove.

[0010] In some embodiments, the limiting mechanism includes a connected limiting member and a spring, wherein the limiting member is slidably connected to the shell and can engage or disengage from a clamping member of the limiting groove when sliding, and the spring can accumulate elastic force when the limiting member disengages from the clamping member.

[0011] In some embodiments, there are multiple limiting mechanisms, the clamping member is provided with an annular groove along its circumference, multiple limiting mechanisms are arranged around the circumference of the annular groove, and multiple limiting members can simultaneously engage or disengage from the annular groove when sliding back and forth.

[0012] In some embodiments, the longitudinal cross-sectional area of ​​the slot decreases in the direction in which the connector is inserted into the slot.

[0013] In some embodiments, the plug-in assembly further includes a buffer pad disposed at an end of the slot, and the buffer pad can elastically abut against the connector when the connector is inserted into the slot.

[0014] In a second aspect, the present invention further provides an electric commercial vehicle, comprising a frame and the above-mentioned battery replacement device, wherein the plug-in components are provided on both sides of the frame, and the card slot of the plug-in component is detachably plugged into the plug-in component on the outer wall of the battery box.

[0015] Compared with the prior art, the battery replacement device provided by the present invention can be used to be installed on electric medium and heavy-duty trucks. The plug-in assembly can be installed on the outer wall of the frame of the medium and heavy-duty truck. The battery box can be inserted into the card slot of the plug-in assembly through its plug-in, and then the plug-in located in the card slot is inserted using the card connector to lock the plug-in. When the battery box needs to be disassembled, the card connector is slid away from the plug-in, and the plug-in can be pulled out of the card slot by unlocking the plug-in. It can be seen that in the process of replacing the battery, the present invention only needs to control the reciprocating sliding of the card connector, and there is no need to frequently disassemble and assemble the screws. The battery replacement efficiency is high and basically does not affect the transportation efficiency of the truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the structure of a battery replacement device provided in an embodiment of the present invention; Figure 2 is a schematic structural diagram of a frame provided by an embodiment of the present invention; Figure 3 is a schematic structural diagram of a battery box provided by an embodiment of the present invention; Figure 4 yes Figure 3 An enlarged schematic diagram of part A in FIG. Figure 5 is a schematic diagram of the structure of a plug-in assembly provided by an embodiment of the present invention; Figure 6 is an internal schematic diagram of a plug-in assembly provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of the clamping member provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In order to solve the technical problem that in the prior art, the batteries on medium and heavy-duty trucks are usually fixed on the vehicle with screws, and during the process of replacing the batteries, the screws need to be frequently disassembled and assembled, resulting in low battery replacement efficiency and affecting the transportation efficiency of the truck, the present invention provides a battery replacement device that can realize the rapid disassembly and assembly of batteries on medium and heavy-duty electric trucks, thereby improving the battery replacement efficiency and transportation efficiency.

[0019] It should be noted that the battery replacement device described in the present invention is used for but not limited to medium and heavy-duty electric trucks. For the convenience of explanation, in the present invention, only the application of the battery replacement device to medium and heavy-duty electric trucks is used as an example for explanation. The principles of applying the battery replacement device to other types of equipment are essentially the same as those applied to medium and heavy-duty electric trucks, and will not be elaborated here.

[0020] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a battery replacement device in one embodiment of the present invention. The battery replacement device 100 includes a battery box 1 and a plug-in assembly 2. The battery box 1 includes a box body 11 and a plug-in assembly 12 arranged on the outer wall of the box body 11. The box body 11 is provided with a receiving groove for accommodating a battery (not shown in the figure). Figure 3 The outer wall of the box body 11 of the illustrated embodiment is provided with a plurality of plug-ins 12, and the plurality of plug-ins 12 are arranged at intervals and located in the same straight line.

[0021] The plug assembly 2 includes a housing 21, a clamping member 22 and an elastic member 23 ( Figure 6 As shown), the shell 21 is provided with a card slot 211, the card connector 22 is slidably connected to the shell 21 and can be inserted into or withdrawn from the card slot 211 when sliding to lock or unlock the plug-in 12 inserted into the card slot 211, and the elastic member 23 is connected to the card connector 22 and can accumulate elastic force when the card connector 22 withdraws from the card slot 211.

[0022] In this embodiment, the plug assembly 2 can be mounted on the frame 3 of the truck and fixed, and the plug 12 of the battery box 1 is provided with a through hole 121 ( Figure 4 As shown in the figure, when the plug-in 12 is inserted into the card slot 211, the card connector 22 can be inserted into the socket 121 to lock the plug-in 12, thereby completing the installation and fixation of the battery box 1 on the truck frame. When the card connector 22 is pulled out of the socket 121, the plug-in 12 is unlocked, and the battery box 1 can be removed from the truck frame. Therefore, the disassembly and assembly of the battery box 1 can be completed by only sliding the card connector 22 back and forth to insert or disengage the socket 121 of the plug-in 12, which is quick and convenient, saving time and effort.

[0023] See also Figure 4 The plug-in 12 is connected to an L-shaped member 13, which has a screw hole 131 and can be installed on the box body 11 by passing a screw through the screw hole 131, so that the plug-in 12 can be assembled and disassembled on the box body 11. In addition, the plug-in 12 is spaced from one side of the L-shaped member 13 having the screw hole 131, so that the plug-in 12 can be inserted into the card slot 211.

[0024] In one embodiment, see Figure 5 and Figure 6The plug-in assembly 2 further includes a driving motor 24 and a driving gear 25. The driving gear 25 meshes with the card connector 22. The driving motor 24 is connected to the driving gear 25 and can drive the driving gear 25 to rotate, so that the driving gear 25 drives the card connector 22 to slide back and forth through meshing to be inserted into or withdrawn from the card slot 211. In this embodiment, the reciprocating sliding of the card connector 22 is driven by the driving motor 24 to drive the driving gear 25 to rotate, and then the driving gear 25 drives the card connector 22 to slide back and forth through meshing. The card connector 22 has a tooth 221 ( Figure 7 As shown), the latch tooth 221 meshes with the driving gear 25, and when the driving gear 25 rotates clockwise, it can drive the latching member 22 to slide up and disengage from the slot 211 through meshing; when the driving gear 25 rotates counterclockwise, it can drive the latching member 22 to slide down and insert into the slot 211 through meshing.

[0025] For further information, see Figure 6 The end of the card connector 22 away from the card slot 211 has a handle 222, and the handle 222 can drive the card connector 22 to slide back and forth under the drive of an external force to insert or withdraw from the card slot 211. In this embodiment, when the drive motor 24 does not work, the staff can manually pull the handle 222 and drive the card connector 22 to slide up and down through the handle 222 to drive the card connector 22 to insert or withdraw from the card slot 211, so that when the drive motor 24 fails to work, the battery box 1 can still be disassembled and assembled, which is convenient to use.

[0026] In one embodiment, see Figure 6The plug-in assembly 2 further includes a sensor 26 disposed on the housing 21. The sensor 26 is connected to the drive motor 24 and can send a sensing signal to the drive motor when it is close to the plug-in 12. When the drive motor 24 receives the sensing signal, it can drive the drive gear 25 to drive the card connector 22 to disengage from the card slot 211. In this embodiment, the housing 21 is provided with a positioning groove 212, which connects the card slot 211 and the external air. The positioning groove 212 can be used to position the plug-in 12 inserted into the card slot 211, so that the plug-in 12 is more stable after being inserted into the card slot 211. The sensor 26 is installed on the wall of the positioning groove 212. When the battery box 1 is installed, the plug-in 12 on the battery box 1 is gradually inserted into the slot 211. At this time, the plug-in 12 gradually approaches the sensor 26 until the sensor 26 generates a sensing signal. The sensor 26 controls the driving motor 24 to drive the driving gear 25 to rotate. The driving gear 25 drives the card connector 22 to slide up and exit the slot 211 through meshing, so as to avoid the card connector 22 hindering the plug-in 12 from being inserted into the slot 211. When the card connector 22 exits the slot 211, the sensor 26 continues to sense the distance between the plug-in 12. When the plug-in 12 is fully inserted into the slot 211, the plug-in 12 contacts the sensor 26, and the distance sensed by the sensor 26 is zero. At this time, the sensor 26 controls the driving motor 24 to drive the driving gear 25 to rotate. The driving gear 25 drives the card connector 22 to slide down and enter the slot 211 through meshing, specifically, the jack 121 on the plug-in 12 inserted into the slot 211, so as to complete the locking of the plug-in 12. In this embodiment, the sensor 26 is used to automatically control the clamping member 22 to lock the plug-in 12, which is easy to use and has a high charging efficiency for the truck.

[0027] In one embodiment, see Figure 6 The housing 21 is provided with a limiting groove 213, the limiting groove 213 is connected to the card slot 211, and the plug assembly 2 also includes a limiting mechanism located in the limiting groove 213, and the limiting mechanism can connect the card connector 22 when the card connector 22 passes through the card slot 211 and is inserted into the limiting groove 213. In this embodiment, the card connector 22 is limited by setting a limiting mechanism, so as to enhance the locking stability of the card connector 22. The card connector 22 slides downward and is inserted into the card slot 211 under the action of the driving gear 25, and can be inserted into the limiting groove 213 after passing through the card slot 211, and is connected with the limiting mechanism in the limiting groove 213.

[0028] In one embodiment, see Figure 6The limiting mechanism includes a limiting member 214 and a spring 215 connected to each other. The limiting member 214 is slidably connected to the housing 21 and can engage or disengage the clamping member 22 of the limiting groove 213 when sliding. The spring 215 can accumulate elastic force when the limiting member disengages from the clamping member. In this embodiment, the limiting groove 213 is circular, and the limiting member 214 and the spring 215 are both arranged along the radial direction of the limiting groove 213. When the limiting member 214 slides away from the limiting groove 213, the limiting member 214 can press against the spring 215 to drive the spring 215 to accumulate elastic force. The spring 215 can also release the elastic force to drive the limiting member 214 to extend into the limiting groove 213 to engage the clamping member 22 of the limiting groove 213.

[0029] In one embodiment, see Figure 6 and Figure 7 The number of the above-mentioned limiting mechanisms is multiple, and the clamping member 22 is provided with an annular groove 223 along its circumference. The multiple limiting mechanisms are arranged around the circumference of the annular groove 223, and the multiple limiting members 214 can be simultaneously engaged with or disengaged from the annular groove 223 when sliding back and forth. In this embodiment, the multiple limiting members 214 are engaged with the annular groove 223 under the action of their respective springs 215, so as to facilitate the omnidirectional clamping and fixing of the clamping member 22, which is conducive to enhancing the stability of the fixing of the clamping member 22. When it is necessary to unlock the clamping member 22, it is only necessary to drive the clamping member 22 to slide upward to disengage from the limiting groove 213. During the upward sliding process of the clamping member 22, the groove wall of the annular groove 223 of the clamping member 22 first presses against the limiting member 214, and the limiting member 214 first moves a short distance away from the limiting groove 213 and drives the spring 215 to accumulate elastic force. After the clamping member 22 is completely disengaged from the limiting groove 213, the spring 215 releases the elastic force to drive the limiting member 214 to move toward the limiting groove 213 and reset.

[0030] In one embodiment, see Figure 6 , in the direction in which the card connector 22 is inserted into the card slot 211, the longitudinal cross-sectional area of ​​the card slot 211 decreases. In this embodiment, the shape of the plug-in 12 is adapted to the shape of the card slot 211, and the longitudinal cross-sectional area of ​​the plug-in 12 also gradually decreases from the direction in which it is inserted into the card slot 211. The longitudinal cross-sectional area of ​​the entrance of the card slot 211 is the largest. During the process of inserting the plug-in 12 into the card slot 211, the plug-in 12 is first inserted from the entrance of the card slot 211 with the end having the smallest longitudinal cross-sectional area, so that the plug-in 12 has a greater fault tolerance when inserted into the card slot 211. Even if the position of the plug-in 12 is slightly offset relative to the entrance of the card slot 211, it can still be smoothly inserted into the card slot 211, which is beneficial to improving the installation efficiency of the battery box 1.

[0031] In one embodiment, see Figure 6The plug assembly 2 further includes a buffer pad 27 disposed at the end of the card slot 211, and the buffer pad 27 can elastically abut the card connector 22 when the card connector 22 is inserted into the card slot 211. In this embodiment, the buffer pad 27 is made of rubber or silicone material, and the buffer pad 27 can elastically abut the plug-in 12 when the plug-in 12 is inserted into the card slot 211 to the limit position, and can protect the plug-in 12 and prevent the plug-in 12 from being worn.

[0032] In the second aspect, the present invention also provides an electric commercial vehicle, which can be of any type, for example, a medium or heavy-duty electric truck, etc. A medium or heavy-duty electric truck is taken as an example below. The medium or heavy-duty electric truck includes a frame 3 and the above-mentioned battery replacement device 100. Plug-in components 2 are provided on both sides of the frame 3, and the card slot of the plug-in component 2 is detachably connected to the plug-in 12 on the outer wall of the battery box 1.

[0033] The middle of the vehicle frame 3 of this embodiment can be used to install vehicle accessories or cargo boxes, and the battery boxes 1 can be removably plugged in on both sides of the vehicle frame 3 through the plug-in components 2. Installing multiple battery boxes 1 on both sides of the vehicle frame 3 is conducive to improving the balance and stability of vehicle driving. In addition, multiple plug-in components 2 are provided on both sides of the vehicle frame 3, and multiple plug-ins 12 are provided on the outer wall of the battery box 1. During the installation process, the battery box 1 can be simultaneously inserted into the multiple plug-in components 2 on one side of the vehicle frame 3 through the multiple plug-ins 12, so that the battery box 1 can be stably installed on the vehicle frame 3.

[0034] See also Figure 2 The bottom of the vehicle frame 3 is provided with a plurality of supporting beams 31, which are arranged in parallel and at intervals, and both ends of each supporting beam 31 extend beyond the two sides of the vehicle frame 3, and the extended portion is used to support the battery box 1. When the battery box 1 is connected to the plug assembly 2, the supporting beam 31 can support the battery box 1, which can reduce the load pressure of the plug assembly 2 on the battery box 1, and is conducive to extending the service life of the plug assembly 2.

[0035] In order to better understand the present invention, the following Figures 1 to 7 The technical solution of the present invention is described in detail: The battery replacement device provided by the present invention can be used for installation on electric medium and heavy-duty trucks. The plug-in assembly 2 can be installed on the outer wall of the frame 3 of the medium and heavy-duty truck. The battery box 1 can be inserted into the card slot 211 of the plug-in assembly 2 through its plug-in 12, and then the plug-in 12 located in the card slot 221 is inserted using the card connector 22 to lock the plug-in 12. When the battery box 1 needs to be disassembled, the card connector 22 is slid and pulled out of the plug-in 12, and the plug-in 12 can be unlocked to pull the plug-in 12 out of the card slot 221. It can be seen that in the process of replacing the battery, the present invention only needs to control the reciprocating sliding of the card connector 22, and there is no need to frequently disassemble and assemble the screws. The battery replacement efficiency is high and basically does not affect the transportation efficiency of the truck.

[0036] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery replacement device, characterized in that: include: A battery box, comprising a box body and a plug-in unit arranged on the outer wall of the box body, wherein the box body is provided with a receiving groove for accommodating batteries; and The plug-in assembly includes a shell, a card connector and an elastic member. The shell is provided with a card slot. The card connector is slidably connected to the shell and can be inserted into or withdrawn from the card slot when sliding to lock or unlock the plug-in inserted into the card slot. The elastic member connects the card connector and the shell and can accumulate elastic force when the card connector withdraws from the card slot.

2. The battery replacement device according to claim 1, characterized in that: The plug-in assembly also includes a driving motor and a driving gear, wherein the driving gear engages with the card connector, and the driving motor is connected to the driving gear and can drive the driving gear to rotate, so that the driving gear drives the card connector to slide back and forth through engagement to be inserted into or withdrawn from the card slot.

3. The battery replacement device according to claim 2, characterized in that: The plug-in assembly also includes a sensor arranged on the shell, which is connected to the drive motor and can send a sensing signal to the drive motor when it is close to the plug-in. When the drive motor receives the sensing signal, it can drive the drive gear to drive the card connector to disengage from the card slot.

4. The battery replacement device according to claim 1, characterized in that: The end of the clamping member away from the clamping slot is provided with a handle, and the handle can drive the clamping member to slide back and forth under the driving of external force so as to be inserted into or withdrawn from the clamping slot.

5. The battery replacement device according to claim 1, characterized in that: The shell is provided with a limiting groove, the limiting groove is connected to the card slot, and the plug-in assembly also includes a limiting mechanism located in the limiting groove, and the limiting mechanism can connect the card connector when the card connector passes through the card slot and is inserted into the limiting groove.

6. The battery replacement device according to claim 5, characterized in that: The limiting mechanism includes a connected limiting member and a spring, wherein the limiting member is slidably connected to the housing and can engage or disengage from a clamping member of the limiting groove when sliding, and the spring can accumulate elastic force when the limiting member disengages from the clamping member.

7. The battery replacement device according to claim 6, characterized in that: There are multiple limiting mechanisms, and the clamping member is provided with an annular groove along its circumference. The multiple limiting mechanisms are arranged around the circumference of the annular groove, and the multiple limiting members can be simultaneously clamped or disengaged from the annular groove when sliding back and forth.

8. The battery replacement device according to claim 1, characterized in that: In the direction in which the clamping member is inserted into the clamping slot, the longitudinal cross-sectional area of ​​the clamping slot decreases.

9. The battery replacement device according to claim 1, characterized in that: The plug-in assembly further comprises a buffer pad arranged at the end of the slot, and the buffer pad can elastically abut against the clamping member when the clamping member is inserted into the slot.

10. An electric commercial vehicle, characterized in that: It comprises a vehicle frame and a battery replacement device as described in any one of claims 1 to 9, wherein the plug-in components are provided on both sides of the vehicle frame, and the card slot of the plug-in component is detachably plugged into the plug-in component on the outer wall of the battery box.

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