Connection structure of latch type quick-change automobile battery pack and new energy vehicle body

Abstract

The present application relates to a latch type quick-change automobile battery pack and new energy vehicle body connection structure, and relates to the technical field of electric vehicles. The latch type quick-change automobile battery pack and new energy vehicle body connection structure comprises a battery end locking mechanism arranged at the side end of the battery pack, a vehicle body end lock opening mechanism arranged at the side of the vehicle body, and a battery pack lifting mechanism. The battery pack lifting mechanism comprises a first lifting platform and a second lifting platform. The second lifting platform is provided with a battery end opening pin matched with the battery end locking mechanism and a vehicle body end opening pin matched with the vehicle body end lock opening mechanism. The height of the battery end opening pin is higher than that of the vehicle body end opening pin. The connection structure of the present application realizes the dismounting and locking process of the battery pack and the new energy vehicle body through the battery pack lifting mechanism. The quick change and installation of the battery pack can be realized through simple lifting control, which significantly shortens the replacement time of the battery pack.

Description

Technical Field

[0001] This invention relates to the technical field of electric vehicles, and more specifically, to a connection structure between a pin-type quick-swap automotive battery pack and a new energy vehicle body. Background Technology

[0002] Electric vehicles replacing gasoline-powered vehicles has become an inevitable direction for future automotive development. Although the current driving range of electric vehicles has reached 500km-700km, the charging time for current electric vehicle batteries is usually quite long, and replacing the battery pack is an effective solution to this problem. However, the battery packs of electric vehicles are large and heavy. If the connection structure between the battery pack and the new energy vehicle body is too complex, it will lead to low battery swapping efficiency and low reliability. For example, using bolts to fasten and disassemble the battery pack results in complex disassembly and low replacement efficiency; while using an assembly structure with electrical signal pins requires a separate electrical system structure, which will significantly increase costs. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems in the prior art, the purpose of this invention is to provide a connection structure between a pin-type quick-swap automotive battery pack and a new energy vehicle body.

[0004] The connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body of the present invention includes a battery end locking mechanism disposed on the side of the battery pack, a vehicle body end lock opening mechanism disposed on the side of the vehicle body, and a battery pack lifting mechanism; the battery pack lifting mechanism includes a first lifting platform and a second lifting platform, the second lifting platform being provided with a battery end opening pin cooperating with the battery end locking mechanism and a vehicle body end opening pin cooperating with the vehicle body end lock opening mechanism, and the height of the battery end opening pin is higher than the height of the vehicle body end opening pin.

[0005] The second lifting platform is disposed on the outer periphery of the first lifting platform, and there are multiple second lifting platforms, which are configured to correspond to the battery-end locking mechanism and the vehicle body-end locking mechanism.

[0006] The battery-end locking mechanism includes a front cover, a stop push rod, a locking spring, a return spring, a rear cover, a battery-end housing, a stop slider, and a pin. The front cover, stop push rod, stop slider, and rear cover are disposed within the battery-end housing. A pin is disposed within the stop slider, and a locking spring is disposed at the rear end of the pin. The stop slider is disposed adjacent to the rear cover, and the stop slider and the rear cover are connected by a return spring. The stop push rod is disposed adjacent to the front cover, and a push rod inclined surface is disposed below the stop push rod to cooperate with the battery-end opening pin. A battery-end housing pin hole is disposed on the side of the battery-end housing to allow the pin to pass through.

[0007] The front end cap is fixed to the front end of the battery end housing, and the rear end cap is fixed to the rear end of the battery end housing.

[0008] The front cover, the rear cover, and the lower surface of the battery end housing are connected to the battery pack mounting bracket by bolts, and the lower surfaces of the battery pack mounting bracket and the battery end housing are provided with through holes that allow the battery end opening pin to pass through.

[0009] The vehicle body lock opening mechanism includes a vehicle body housing, within which a vehicle body push rod, a front cover, and a rear cover are disposed. The vehicle body push rod is positioned between the front cover and the rear cover, and the vehicle body push rod is connected to the rear cover via a return spring. The lower end of the vehicle body push rod is provided with a push rod inclined surface that cooperates with the vehicle body opening pin. Furthermore, the side of the vehicle body housing is provided with a vehicle body housing pin hole that allows the pin to pass through.

[0010] The front and rear end caps are fixedly connected to the vehicle body end housing, and the lower surfaces of the front and rear end caps and the vehicle body end housing are connected to the vehicle body side by fastening bolts.

[0011] The lower surface of the vehicle body side and the vehicle body end housing is provided with a through hole that allows the vehicle body end opening pin to pass through.

[0012] The connection structure also includes a battery pack pre-tightening protection structure.

[0013] The battery pack pre-tightening protection structure includes a metal stop block and a rubber buffer block set on the upper surface of the battery pack mounting bracket. The rubber buffer block is equipped with a pre-tightening spring and is fixed to the upper surface of the battery pack mounting bracket by injection-molded pre-embedded fastening bolts and nuts.

[0014] Compared with the prior art, the connection structure of the pin-type quick-swap automotive battery pack and the new energy vehicle body of the present invention has the following advantages:

[0015] The connection structure of this invention realizes the process of disassembling and locking the battery pack to the new energy vehicle body through the battery pack lifting mechanism. The battery pack can be quickly replaced and installed through simple lifting control, which significantly shortens the battery pack replacement time. Attached Figure Description

[0016] Figure 1 This is a diagram showing the arrangement of the connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body in Example 1.

[0017] Figure 2 This is a schematic diagram of the locking mechanism in the connection structure of Embodiment 1;

[0018] Figure 3 This is a schematic diagram showing the cooperation between the battery-side locking mechanism and the vehicle-side lock opening mechanism in the connection structure of Embodiment 1.

[0019] Figure 4 This is a schematic diagram of the internal cross-section of the battery end locking mechanism in the connection structure of Embodiment 1;

[0020] Figure 5 This is a schematic diagram of the internal cross-section of the vehicle body end lock opening mechanism in the connection structure of Embodiment 1;

[0021] Figure 6 This is an overall structural diagram of the battery-end locking mechanism in the connection structure of Embodiment 1;

[0022] Figure 7 This is a disassembled structural diagram of the battery end locking mechanism in the connection structure of Embodiment 1;

[0023] Figure 8 This is an overall structural diagram of the vehicle body end lock opening mechanism in the connection structure of Embodiment 1;

[0024] Figure 9 This is a disassembled structural diagram of the vehicle body end lock opening mechanism in the connection structure of Embodiment 1;

[0025] Figure 10 This is a schematic diagram of the battery pack pre-tightening protection mechanism in the connection structure of Embodiment 1. Detailed Implementation

[0026] The following will further elaborate on the connection structure between the plug-in fast-swap automotive battery pack and the new energy vehicle body of the present invention with reference to specific embodiments, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the technical solution of the present invention.

[0027] Example 1

[0028] Figure 1 This diagram shows the planar arrangement of components in the connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body of this embodiment. The connection structure includes a battery end locking mechanism 10 located on the side of the battery pack 50, a body end lock opening mechanism 20 located on the side of the vehicle body 60, a battery pack lifting mechanism 30, and a battery pack pre-tightening protection structure 40. In this invention, the connection structure uses the spring's return to insert the pin of the battery end locking mechanism 10 into the pin hole of the body end lock opening mechanism 20, thus connecting the battery pack to the vehicle body. The battery pack pre-tightening protection structure 40 is provided around the battery pack to ensure its tightness and stability and to limit excessive lifting of the lifting platform, preventing damage to the shock-absorbing rubber and pre-tightening spring in the battery pack pre-tightening protection structure 40. Figure 2As shown, the battery pack lifting mechanism 30 includes a first lifting platform (not shown) and a second lifting platform 33. The first lifting platform is used to lift the battery pack, and the first and second lifting platforms cooperate to realize the installation and removal of the battery pack. The first lifting platform is a conventional lifting structure used to lift the battery pack. The second lifting platform 33 is provided with a battery end opening pin 31 that cooperates with the battery end locking mechanism 10 and a vehicle body end opening pin 32 that cooperates with the vehicle body end locking mechanism 20. The height of the battery end opening pin 31 is higher than the height of the vehicle body end opening pin 32. By setting the second lifting platform 33 and making the height of the battery end opening pin 31 higher than the height of the vehicle body end opening pin 32, the present invention can achieve a delay effect, thereby completing the sequential action of the locking mechanisms at the battery end and the vehicle body end. Figure 3-9 As shown, the battery-end locking mechanism 10 includes a front cover 11, a stop push rod 12, a locking spring 13, a battery-end return spring 14, a rear cover 15, a battery-end housing 16, a stop slider 17, and a pin 18. The front cover 11, stop push rod 12, stop slider 17, and rear cover 15 are disposed within the battery-end housing 16. A pin 18 is disposed within the stop slider 17, and a locking spring 13 is disposed at the rear end of the pin 18. The stop slider 17 is disposed adjacent to the rear cover 15, and the stop slider 17 and the rear cover 15 are connected by the battery-end return spring 14. The stop push rod 12 is disposed adjacent to the front cover 11. The front cover 11 is fixed to the front end of the battery-end housing 16 by bolts, and the rear cover 15 is fixed to the rear end of the battery-end housing 16 by bolts. The lower surfaces of the front cover 11, the rear cover 15, and the battery end housing 16 are connected to the battery pack mounting bracket 51 by fastening bolts. A push rod bevel is provided below the stop push rod 12 to cooperate with the battery end opening pin 31. Figure 4 As shown, the lower surfaces of the battery pack mounting bracket 51 and the battery end housing 16 are provided with through holes allowing the battery end opening pin 31 to pass through. A battery end pin hole is provided on the side of the battery end housing 16. The vehicle body lock opening mechanism 20 includes a vehicle body housing 24, within which a vehicle body push rod 25, a front cover 21, and a rear cover 22 are provided. The vehicle body push rod 25 is disposed between the front cover 21 and the rear cover 22, and the vehicle body push rod 25 is connected to the rear cover 22 via a vehicle body return spring 23. The front cover 21 and the rear cover 22 are fixedly connected to the vehicle body housing 24 by bolts, and the lower surfaces of the front cover 21, the rear cover 22, and the vehicle body housing 24 are connected to the vehicle body side 60 by fastening bolts. The lower end of the vehicle body push rod 25 is provided with a push rod slope that cooperates with the vehicle body opening pin 32. The vehicle body end housing 24 is provided with a vehicle body end pin hole that allows the pin to pass through. For example... Figure 5 As shown, the lower surfaces of the vehicle body side 60 and the vehicle body end housing 24 are provided with through holes that allow the vehicle body end opening pin 32 to pass through. Figure 10 As shown, a battery pack pre-tightening protection structure 40 is provided on the upper surface of the battery pack mounting bracket 51. The battery pack pre-tightening protection structure 40 includes a metal stop block 41 and a rubber buffer block 43 disposed on the upper surface of the battery pack mounting bracket 51. A pre-tightening spring 42 is disposed within the rubber buffer block 43. The rubber buffer block 43 is fixed to the upper surface of the battery pack mounting bracket 51 by injection-molded pre-embedded fastening bolts 44 and nuts 45. The height of the rubber buffer block 43 is greater than the height of the metal stop block 41, allowing the rubber buffer block 43 to initially contact the vehicle body side to provide buffer protection. The battery pack pre-tightening protection structure 40 can limit the lifting height of the battery pack, ensuring a relatively stable lifting height. The metal stop block 41 and rubber buffer block 43 disposed on the upper surface of the battery pack mounting bracket 51 provide buffer protection for the battery pack, preventing accidental impacts such as collisions. After the battery pack is installed with the vehicle body side, they increase the locking force of the battery locking mechanism pin in a clamping state, preventing the battery pack from detaching.

[0029] The installation process of the pin-type quick-swap automotive battery pack and the connection structure of the new energy vehicle body in this embodiment is as follows:

[0030] Battery pack installation process: The opening pin 31 is inserted into the battery end locking mechanism, the stop push rod 12 retracts, the battery end return spring 14 is compressed, and the battery end locking mechanism opens; then the battery pack and the first lifting platform are lifted, the battery pack rises and the rubber buffer block 43 and pre-tension spring 42 in the battery pack pre-tightening protection structure 40 are compressed, after the first lifting platform touches the metal stop block 41, the battery pack is installed in place, and the battery end locking mechanism 10 and the vehicle body lock opening mechanism 20 are reset and locked under the action of the battery end return spring 14 of the battery end locking mechanism 10 and the vehicle body lock opening mechanism 20. The first lifting platform and the second lifting platform fall at the same time, and the battery pack lifting mechanism is reset back to the initial position. In this embodiment, the pin 18 achieves telescopic movement through the action of the locking spring 13, and the contact surface between the vehicle body push rod 25 and the pin 18 is an inclined surface. The movement of the vehicle body push rod 25 can achieve the effect of pushing out the pin 18.

[0031] Battery pack disassembly process: First, the first and second lifting platforms are raised simultaneously. When the first lifting platform contacts the metal stop block 41, the first lifting platform stops rising. The pin 31 of the second lifting platform is inserted into the battery end locking mechanism, the stop push rod 12 retracts, the battery end return spring 14 is compressed, and the battery end locking mechanism opens. The second lifting platform 33 continues to rise a preset distance (e.g., 25mm) and is opened by the vehicle body end lock opening mechanism 20. The specific opening process of the vehicle body end lock opening mechanism 20 is as follows: the vehicle body end opening pin 32 first contacts the vehicle body end push rod 25, the second lifting platform 33 continues to rise, the vehicle body end push rod 25 retracts, the vehicle body end return spring 23 is compressed, the second lifting platform 33 continues to rise a preset distance (e.g., 25mm) and then stops. The opening pin 18 of the vehicle body end lock opening mechanism is pushed back into the battery end locking mechanism by the compression and rebound of the locking spring 13. Then, the first and second lifting platforms 33 fall simultaneously, returning to their initial positions, and the battery pack disassembly is completed.

[0032] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A connection structure between a pin-type quick-swap automotive battery pack and a new energy vehicle body, characterized in that: The system includes a battery-side locking mechanism located on the side of the battery pack, a vehicle-side locking mechanism located on the side of the vehicle body, and a battery pack lifting mechanism. The battery pack lifting mechanism includes a first lifting platform and a second lifting platform. The second lifting platform is provided with a battery-side unlocking pin that cooperates with the battery-side locking mechanism and a vehicle-side unlocking pin that cooperates with the vehicle-side locking mechanism, and the height of the battery-side unlocking pin is higher than the height of the vehicle-side unlocking pin. The second lifting platform is located on the outer periphery of the first lifting platform, and there are multiple second lifting platforms, each corresponding to the battery-side locking mechanism and the vehicle-side locking mechanism. The battery end locking mechanism includes a front cover, a stop push rod, a locking spring, a return spring, a rear cover, a battery end housing, a stop slider, and a pin. The front cover, stop push rod, stop slider, and rear cover are disposed within the battery end housing. A pin is disposed within the stop slider, and a locking spring is disposed at the rear end of the pin. The stop slider is disposed adjacent to the rear cover, and the stop slider and the rear cover are connected by a return spring. The stop push rod is disposed adjacent to the front cover, and a push rod inclined surface is disposed below the stop push rod to cooperate with the battery end opening pin. A battery end housing pin hole is disposed on the side of the battery end housing to allow the pin to pass through. The vehicle body lock opening mechanism includes a vehicle body housing, within which a vehicle body push rod, a front cover, and a rear cover are disposed. The vehicle body push rod is disposed between the front cover and the rear cover, and the vehicle body push rod is connected to the rear cover by a return spring. The lower end of the vehicle body push rod is provided with a push rod inclined surface that cooperates with the vehicle body opening pin. Furthermore, the side of the vehicle body housing is provided with a vehicle body housing pin hole that allows the pin to pass through.

2. The connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body according to claim 1, characterized in that: The front end cap is fixed to the front end of the battery end housing, and the rear end cap is fixed to the rear end of the battery end housing.

3. The connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body according to claim 1, characterized in that: The front cover, the rear cover, and the lower surface of the battery end housing are connected to the battery pack mounting bracket by bolts, and the lower surface of the battery pack mounting bracket and the battery end housing is provided with through holes that allow the battery end opening pin to pass through.

4. The connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body according to claim 1, characterized in that: The front and rear end caps are fixedly connected to the vehicle body end housing, and the lower surfaces of the front and rear end caps and the vehicle body end housing are connected to the vehicle body side by fastening bolts.

5. The connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body according to claim 1, characterized in that: The lower surface of the vehicle body side and the vehicle body end housing is provided with through holes that allow the vehicle body end opening pin to pass through.

6. The connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body according to claim 1, characterized in that: The connection structure also includes a battery pack pre-tightening protection structure.

7. The connection structure between the pin-type quick-swap automotive battery pack and the new energy vehicle body according to claim 1, characterized in that: The battery pack pre-tightening protection structure includes a metal stop block and a rubber buffer block set on the upper surface of the battery pack mounting bracket. A pre-tightening spring is set inside the rubber buffer block. The rubber buffer block is fixed to the upper surface of the battery pack mounting bracket by injection-molded pre-embedded fastening bolts and nuts.

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