A structure for quick disassembly of a power battery

Abstract

This utility model provides a structure for quick disassembly of a power battery, relating to new energy vehicles. It includes: two connecting parts; support beams on opposite sides of the power battery pack; multiple center positioning holes on the support beams; each connecting part including a connecting bracket, a support bracket, and multiple positioning pins; the connecting bracket having multiple suspension brackets; multiple upper positioning holes on the connecting bracket; and multiple lower positioning holes on the support bracket. The upper parts of the two support beams contact the bottoms of the two connecting brackets, and the lower parts of the two support beams contact the tops of the two support brackets, aligning the upper, center, and lower positioning holes. Each positioning pin is sequentially inserted into the upper, center, and lower positioning holes. The support bracket moves along the length of the power battery pack, locking or releasing the positioning pin via the lower positioning hole. The advantages of this utility model are: it enables quick disassembly and installation of the power battery pack; the installation and positioning process is simple; it saves assembly time and improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to a structure for quick disassembly of a power battery. Background Technology

[0002] With the government's vigorous promotion of the new energy vehicle industry, the installation methods of power batteries for different models in the commercial vehicle sector are becoming increasingly diverse. Currently, power batteries for N2-class vehicles on the market mainly adopt two installation layouts: one is bottom mounting between the chassis longitudinal beams, and the other is side mounting on both sides of the chassis longitudinal beams. Both use a bolted connection structure of "battery-bracket-chassis longitudinal beams," meaning the battery is fixed to the bracket with bolts, and the bracket is then connected to the chassis longitudinal beams with bolts. This installation method has the following three problems:

[0003] 1. To ensure connection strength and stability, a large number of fixing points need to be set between the bracket and the longitudinal beam, and between the bracket and the battery, resulting in a large number of fasteners involved in the installation and disassembly process, which increases the complexity of operation;

[0004] 2. The layout of side placement or bottom placement between longitudinal beams is prone to insufficient installation positioning accuracy, requiring multiple adjustments to the position using the lifting mechanism, which affects assembly efficiency;

[0005] 3. The overall installation and positioning process is cumbersome, and the disassembly of fasteners is a large-scale operation, which is time-consuming and labor-intensive. Utility Model Content

[0006] In view of this, in order to solve the above-mentioned problems in the current installation of power batteries, the embodiments of this utility model provide a structure for quick disassembly of power batteries.

[0007] An embodiment of this utility model provides a structure for quick disassembly of a power battery, comprising:

[0008] Two connectors are respectively disposed on opposite sides of the power battery pack. Support beams are provided on both opposite sides of the power battery pack. Each support beam has multiple center positioning holes. Each connector includes a connecting bracket, a supporting bracket, and multiple positioning pins. The connecting bracket, on its side away from the power battery pack, has multiple suspension brackets for connection to the vehicle frame. The connecting bracket has multiple upper positioning holes, and the supporting bracket has multiple lower positioning holes. The upper parts of the two supporting beams contact the bottoms of the two connecting brackets, and the lower parts of the two supporting beams contact the tops of the two supporting brackets, aligning the upper, center, and lower positioning holes. Each positioning pin is sequentially inserted into the upper, center, and lower positioning holes. The supporting bracket moves along the length of the power battery pack, allowing the positioning pin to be locked or released by the lower positioning hole.

[0009] Furthermore, the positioning pin has a locking section in the middle, and the lower positioning hole includes a movable part and a locking part. The positioning pin can move through the movable part and is locked by the locking part when the locking section moves to the locking part.

[0010] Furthermore, the cross-sectional shape of the snap-fit ​​section is conical, and the cross-sectional shape of the locking part is conical.

[0011] Furthermore, the positioning pin includes a pin head and a pin shaft connected to the pin head. The locking section is disposed on the pin shaft. A positioning surface is provided on one side of the pin head. A stop block adapted to the positioning surface is provided on one side of the upper positioning hole. The positioning surface and the stop block cooperate to move the locking section of the pin shaft along a predetermined direction to the locking part of the lower positioning hole.

[0012] Furthermore, the movable part is semi-circular, and the diameter of the movable part is greater than or equal to the maximum diameter of the pin.

[0013] Furthermore, the pin and the stop are two parts of a cylinder.

[0014] Furthermore, the pin shaft has an inclined slope at the lower end of the locking section, and the slope is located on the side of the pin shaft near the locking part.

[0015] Furthermore, it also includes a pin, both ends of which are provided with actuation ports, and the lower end of the pin is provided with an inclined pushing surface. The pin can be inserted into any of the actuation ports to push the support bracket to move along the length direction of the power battery pack, thereby locking or releasing the positioning pin by the lower positioning hole.

[0016] Furthermore, the pin includes a blocking head, a limiting pin block, and a pushing block connected sequentially from top to bottom. The pushing surface is located at the bottom of the pushing block. When the pushing block is fully inserted into the actuation port, the limiting pin block can be embedded in the actuation port, and the blocking head is blocked by the upper end of the actuation port.

[0017] Furthermore, the cross-sectional shape of the actuating port and the limiting pin block is rectangular.

[0018] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: In the structure for quick disassembly of a power battery, when the power battery pack is installed from the bottom of the vehicle, firstly, two connecting brackets are installed on both sides of the longitudinal beam of the vehicle frame via suspension brackets. The power battery pack is then lifted upwards so that the two support beams are respectively in contact with the two connecting brackets, and the two support brackets are placed at the bottom of the two support beams, aligning the upper positioning hole, middle positioning hole, and lower positioning hole simultaneously. Then, each positioning pin is inserted into each middle positioning hole and each lower positioning hole through the respective upper positioning hole. Finally, the support bracket pack is pushed to move along the length of the power battery pack, so that each positioning pin is locked by the respective lower positioning hole. Using battery positioning pins instead of conventional bolt connections provides a positioning function, high installation positioning accuracy, and eliminates the steps of tightening and loosening bolts, achieving quick disassembly and installation of the power battery pack. The installation positioning process is simple, saving assembly time and improving assembly efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a quick-disassembly structure for a power battery according to this utility model;

[0020] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 3 This is a schematic diagram showing the installation and positioning pin status of the connecting bracket and the support bracket;

[0022] Figure 4 This is a schematic diagram showing the connecting bracket and support bracket without the locating pins installed.

[0023] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0024] Figure 6 This is a schematic diagram of the lower positioning hole;

[0025] Figure 7 This is the front view of the locating pin;

[0026] Figure 8 yes Figure 7 Schematic diagram of the CC section;

[0027] Figure 9 This is the right view of the locating pin;

[0028] Figure 10 This is a diagram of the latch.

[0029] In the diagram: 1. Power battery pack; 2. Support beam; 3. Support bracket; 4. Connecting bracket; 5. Positioning pin; 6. Stop block; 7. Slope; 8. Suspension bracket; 9. Actuating port; 10. Pushing surface; 11. Upper positioning hole; 12. Lower positioning hole; 13. Locking part; 14. Moving part; 15. Pin head; 16. Pin shaft; 17. Snap-fit ​​section; 18. Insert pin; 19. Blocking block; 20. Limiting pin block; 21. Pushing block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0031] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0034] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon.

[0035] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Please refer to Figure 1 and 2The present invention provides a structure for quick disassembly of a power battery. In this embodiment, it is applied to the installation of a power battery pack 1 in an N2 class new energy commercial vehicle. It can be understood that the structure for quick disassembly of a power battery is also applicable to the installation of power battery packs 1 in other electric vehicles, and its scope of application is not limited by the specific embodiments of the present invention.

[0037] This utility model discloses a quick-disassembly structure for a power battery, mainly comprising two connecting members, which are respectively disposed on opposite sides of a power battery pack 1. Generally, the two connecting members are symmetrically arranged on the left and right sides of the power battery pack 1. Support beams 2 are provided on opposite sides of the power battery pack 1, and the support beams 2 are provided with multiple center positioning holes, which are spaced apart along the length direction (front-back direction) of the power battery pack 1. All center positioning holes are arranged on a straight line and are equally spaced.

[0038] like Figure 2 As shown, each of the connectors includes a connecting bracket 4, a supporting bracket 3, and a plurality of positioning pins 5.

[0039] The connecting bracket 4 has multiple suspension brackets 8 on the side opposite to the power battery pack 1 for connecting to the vehicle frame. The two connecting brackets 4 of the two connecting members are respectively fixedly connected to both sides of the vehicle frame longitudinal beam through the suspension brackets 8, so that the two connecting brackets 4 are fixedly installed on both sides of the vehicle frame longitudinal beam, and the installation space of the power battery pack 1 is formed between the two connecting brackets 4.

[0040] The connecting bracket 4 is provided with a plurality of upper positioning holes 11, the cross-sectional shape of which is the same as that of the middle positioning hole. Figure 3 and 4 As shown, in this embodiment, the connecting bracket 4 is provided with a plurality of upper positioning holes 11 spaced apart along the length of the power battery pack 1. Each of the upper positioning holes 11 is arranged on a straight line and is spaced at equal intervals.

[0041] In some embodiments, the connecting bracket 4 is an L-shaped bent plate, the upper positioning hole 11 is disposed on the horizontal side of the connecting bracket 4, and the suspension bracket 8 is disposed on the vertical side of the connecting bracket 4.

[0042] The support bracket 3 is provided with multiple lower positioning holes 12. For example... Figure 4 , 5 As shown in Figure 6, in this embodiment, the support bracket 3 is provided with a plurality of lower positioning holes 12 spaced apart along the length direction of the power battery pack 1. Each of the lower positioning holes 12 is arranged on a straight line and is spaced at equal intervals.

[0043] During the installation of the power battery pack 1, the power battery pack 1 is placed between the two connecting brackets 4. The upper parts of the two supporting beams 2 respectively contact the bottom of the two connecting brackets 4, and the lower parts of the two supporting beams 2 respectively contact the top of the two supporting brackets 3, so that the upper positioning hole 11, the middle positioning hole and the lower positioning hole 12 are aligned. Each positioning pin 5 is inserted into the upper positioning hole 11, the middle positioning hole and the lower positioning hole 12 in sequence. The supporting bracket 3 moves along the length direction of the power battery pack 1, so that the positioning pin 5 can be locked or released by the lower positioning hole 12.

[0044] It should be noted that the positioning pin 5 and the lower positioning hole 12 have two states: locked and released. Specifically, the positioning pin 5 has a locking section 17 in the middle, and the lower positioning hole 12 includes a movable part 14 and a locking part 13. The positioning pin 5 can move through the movable part 14, and when the locking section 17 moves to the locking part 13, it is locked by the locking part 13. The positioning pin 5 is first inserted into the movable part 14 of the upper positioning hole 11, the middle positioning hole, and the lower positioning hole 12. At this time, the positioning pin 5 is in a movable state, i.e., a released state. Then, the power battery pack 1 is pushed to drive the support bracket 3 to move, so that the locking part 13 moves toward the locking section 17 until the locking section 17 is locked by the locking part 13, i.e., a locked state.

[0045] The shape of the latching segment 17 is adapted to the shape of the locking part 13, so that the latching segment 17 is stably locked after entering the locking part 13. In some embodiments, the cross-sectional shape of the latching segment 17 is conical, and the cross-sectional shape of the locking part 13 is conical.

[0046] In order to enable the locking part 13 to move accurately toward the latching section 17 and lock the latching section 17, in some embodiments, such as Figure 7 and 8 As shown, the positioning pin 5 includes a pin head 15 and a pin shaft 16 connected to the pin head 15. The locking section 17 is disposed on the pin shaft 16. A positioning surface is provided on one side of the pin head 15, and a stop block 6 adapted to the positioning surface is provided on one side of the upper positioning hole 11. The positioning surface and the stop block 6 cooperate to move the locking section 17 of the pin shaft 16 along a predetermined direction to the locking part 13 of the lower positioning hole 12. If the pin head 15 and the stop block 6 are two parts of a cylinder, specifically two parts of a cylinder separated by a vertical plane, when the positioning pin 5 is inserted into the upper positioning hole 11, the pin head 15 and the stop block 6 are joined together to form a cylinder, thus placing the locking section 17 in a position that can accurately enter the locking part 13 of the lower positioning hole 12.

[0047] Furthermore, to allow the positioning pin 5 to be inserted into the upper positioning hole 11 and to be pulled out of the upper positioning hole 11 in the released state, the movable part 14 is semi-circular, and the diameter of the movable part 14 is greater than or equal to the maximum diameter of the pin 16. In addition, to allow the positioning pin 5 to be inserted more smoothly into the movable part 14 of the upper positioning hole 11 and the lower positioning hole 12, the lower end of the positioning pin 5 is tapered, that is, the lower end of the pin 16 is tapered.

[0048] Combination Figure 8 and 9 As shown, considering that the support bracket 3 can smoothly move to the predetermined position and lock the positioning pin 5, the pin shaft 16 is provided with an inclined slope 7 at the lower end of the locking section 17. The slope 7 is located on the side of the pin shaft 16 near the locking part 13. When the locking part 13 of the lower positioning hole 12 on the support bracket 3 moves toward the positioning pin 5, the locking part 13 first contacts the slope 7, and then moves along the slope 7 until the locking section 17 is completely inserted into the locking part 13, thereby locking the positioning pin 5. The slope 7 has an angle of approximately 20° with the horizontal plane.

[0049] like Figure 2 and 10 As shown, considering the movement of the support bracket 3 and the accurate control of the movement distance of the lower positioning hole 12, the locking and releasing of the positioning pin 5 are achieved. In some embodiments, the structure for quick disassembly of a power battery according to the present invention further includes a pin 18. Both ends of the support bracket 3 are provided with actuating ports 9, and the lower end of the pin 18 is provided with an inclined pushing surface 10. The pin 18 can be inserted into any one of the actuating ports 9 to push the support bracket 3 to move along the length direction of the power battery pack, thereby locking or releasing the positioning pin 5 by the lower positioning hole 12.

[0050] It should be noted that when the upper positioning hole 11, the middle positioning hole, and the lower positioning hole 12 are aligned, and the positioning pin 5 is inserted but not yet locked, the actuating port 9 located at the rear of the support bracket 3 and the end opposite to the support beam 2 protrude. Inserting the pin 18 into the actuating port 9 at the rear, with the pushing surface 10 facing forward, and pushing the pin 18 downwards will cause the pushing surface 10 to push the support bracket 3 forward, allowing the locking section of the positioning pin 5 to fully enter the locking part 13 of the lower positioning hole 12, thus locking the positioning pin 5. When it is necessary to unlock and release the positioning pin 5, pull the pin 18 out of the actuating port 9 at the rear and insert it into the actuating port 9 at the front, with the pushing surface 10 facing backwards. Pushing the pin 18 downwards will cause the pushing surface 10 to push the support bracket 3 backwards, causing the locking part 13 of the lower positioning hole 12 to separate from the locking section 17 of the positioning pin 5, thus unlocking and releasing the positioning pin 5.

[0051] In some embodiments, the pin 18 includes a blocking head 19, a limiting pin block 20, and a pushing block 21 connected sequentially from top to bottom. The pushing surface 10 is disposed at the bottom of the pushing block 21, and the inclination angle of the pushing surface 10 is generally greater than or equal to 45°, so as to better push the support bracket 3 to move. When the pushing block 21 is fully inserted into the actuating port 9, the limiting pin block 20 can be embedded in the actuating port 9, and the blocking head 19 is blocked by the upper end of the actuating port 9.

[0052] The shapes of the actuating port 9 and the limiting pin 20 are adapted to each other so that after the limiting pin 20 is inserted into the actuating port 9, it can limit the actuating port 9, prevent the support bracket 3 from moving, and ensure a stable connection between the support bracket 3 and the connecting bracket 4. Figure 4 and 10 As shown, the cross-sectional shape of both the actuating port and the limiting pin block can be set to rectangle.

[0053] It should be noted that the number of upper positioning holes 11, middle positioning holes, and lower positioning holes 12 are the same, and their positions correspond. It is understood that the upper positioning holes 11, middle positioning holes, and lower positioning holes 12 do not necessarily need to be on the same straight line; it is sufficient that the lower positioning hole 12 locks and releases with the positioning pin 5 when the support bracket 3 moves along the length of the power battery pack 1.

[0054] This utility model discloses a structure for quick disassembly of a power battery. When the power battery pack 1 is installed from the bottom of the vehicle, the two connecting brackets 4 are first installed on both sides of the longitudinal beam of the vehicle frame through the suspension brackets 8. The power battery pack 1 is then lifted upward by a lifting vehicle or a lift, so that the two support beams 2 are respectively attached to the two connecting brackets 4. The two support brackets 3 are placed at the bottom of the two support beams 2, so that the upper positioning hole 11, the middle positioning hole, and the lower positioning hole 12 are aligned at the same time. Then, each positioning pin 5 is inserted into each middle positioning hole and each lower positioning hole 12 through each upper positioning hole 11. Finally, the pin 18 is inserted into the actuating port 9 at the rear and pushed downward to push the support bracket 3 forward, so that the locking section 17 of each positioning pin 5 is locked by the locking part 13 of each lower positioning hole 12, and the limiting pin block 20 of the pin 18 is embedded in the actuating port 9 to fasten and fix the support bracket 3.

[0055] Conversely, when the power battery pack 1 is removed from the bottom of the vehicle, the power battery pack 1 is first supported by a lift or hoist, the pin 18 in the rear actuation port 9 is taken out and inserted into the front actuation port 9, the pin 18 is pushed downward, and the support bracket 3 is pushed backward, so that the locking part 13 of the lower positioning hole 12 is disengaged from the snap-fit ​​section 17 of the positioning pin 5, thereby releasing the positioning pin 5. In this way, the support bracket 3 and the power battery pack 1 can be disassembled, achieving the function and purpose of quick disassembly.

[0056] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0057] Where there is no conflict, the embodiments and features described above can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for quick disassembly of a power battery, characterized in that, include: Two connectors are respectively disposed on opposite sides of the power battery pack. Support beams are provided on both opposite sides of the power battery pack. Each support beam has multiple center positioning holes. Each connector includes a connecting bracket, a supporting bracket, and multiple positioning pins. The connecting bracket, on its side away from the power battery pack, has multiple suspension brackets for connection to the vehicle frame. The connecting bracket has multiple upper positioning holes, and the supporting bracket has multiple lower positioning holes. The upper parts of the two supporting beams contact the bottoms of the two connecting brackets, and the lower parts of the two supporting beams contact the tops of the two supporting brackets, aligning the upper, center, and lower positioning holes. Each positioning pin is sequentially inserted into the upper, center, and lower positioning holes. The supporting bracket moves along the length of the power battery pack, allowing the positioning pin to be locked or released by the lower positioning hole.

2. The quick disassembly structure of a power battery according to claim 1, characterized in that: The positioning pin has a locking section in the middle, and the lower positioning hole includes a movable part and a locking part. The positioning pin can move through the movable part and is locked by the locking part when the locking section moves to the locking part.

3. The structure for quick disassembly of a power battery as described in claim 2, characterized in that: The cross-sectional shape of the snap-fit ​​section is conical, and the cross-sectional shape of the locking part is conical.

4. The quick disassembly structure of a power battery according to claim 2 or 3, characterized in that: The positioning pin includes a pin head and a pin shaft connected to the pin head. The locking section is disposed on the pin shaft. A positioning surface is provided on one side of the pin head. A stop block adapted to the positioning surface is provided on one side of the upper positioning hole. The positioning surface and the stop block cooperate to move the locking section of the pin shaft to the locking part of the lower positioning hole along a predetermined direction.

5. The quick release structure of a power battery according to claim 4, characterized in that: The movable part is semi-circular, and the diameter of the movable part is greater than or equal to the maximum diameter of the pin.

6. The quick release structure of a power battery according to claim 4, characterized in that: The pin and the stop are two parts of a cylinder.

7. The quick release structure of a power battery according to claim 4, characterized in that: The pin is located at the lower end of the locking section and has an inclined slope, which is located on the side of the pin near the locking part.

8. The quick release structure of a power battery according to claim 1, characterized in that: It also includes a pin, and both ends of the support bracket are provided with actuation ports. The lower end of the pin is provided with an inclined pushing surface. The pin can be inserted into any of the actuation ports to push the support bracket to move along the length direction of the power battery pack, thereby locking or releasing the positioning pin by the lower positioning hole.

9. The structure for quick disassembly of a power battery as described in claim 8, characterized in that: The pin includes a blocking head, a limiting pin block, and a pushing block connected in sequence from top to bottom. The pushing surface is located at the bottom of the pushing block. When the pushing block is fully inserted into the actuation port, the limiting pin block can be embedded in the actuation port. The blocking head is blocked by the upper end of the actuation port.

10. The quick release structure of a power battery according to claim 9, characterized in that: The cross-sectional shape of the actuating port and the limiting pin block is rectangular.

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