Battery pack locking device and heavy truck

Abstract

The utility model provides a battery pack locking device, which is used for locking a battery pack on a vehicle and comprises a lock catch fixed on the battery pack, a spring bolt arranged on the vehicle and a driving component arranged on the vehicle and used for driving the spring bolt to move, the lock tongue is driven by the driving assembly to support the lock catch in the height direction, the driving assembly comprises a driving power source, a guide supporting plate and connecting plates, the connecting plates are arranged on the left side and the right side of the lock tongue and fixed to the driving power source, the connecting plates are fixed to the lock tongue, the lock tongue is located on the guide supporting plate, and the guide supporting plate is arranged on the guide supporting plate. And the guide support plate can move relative to the guide support plate. According to the battery pack locking device and the heavy truck, the battery pack can be locked.

Description

Technical Field

[0001] The utility model relates to a battery pack locking device and a heavy truck. Background Art

[0002] With the requirements of world energy shortage and environmental protection, vehicles powered by gasoline and diesel are subject to certain restrictions and impacts. Electric vehicles that are environmentally friendly and energy-saving have become an important branch of the automotive industry, and electric vehicles exactly meet the dual requirements of energy and environmental protection. The key component in an electric vehicle is the battery. A reasonable layout and installation of the battery can provide greater power for the electric vehicle. In existing electric vehicles, generally, the battery is assembled into a battery frame, and the battery frame is fixed to the chassis of the electric vehicle.

[0003] Although electric vehicles have developed rapidly due to their advantages of energy conservation and environmental protection, due to the less-than-ideal energy density of in-vehicle power batteries, the cruising range of electric vehicles per single charge is relatively short, and the charging time for each battery charge is too long, which severely restricts the use and popularization of electric vehicles. Therefore, the technology for rapid replacement of power batteries used in electric vehicles has also become a research hotspot in the new energy field.

[0004] The battery replacement technology for electric heavy trucks faces greater technical challenges than that for ordinary household cars because the battery pack is heavier, and it is difficult for existing locking devices to lock the battery pack.

[0005] In view of this, it is necessary to improve the existing battery pack locking device to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a battery pack locking device to solve the problem that it is difficult to lock the existing battery pack.

[0007] To achieve the above purpose, the utility model provides a battery pack locking device for locking a battery pack on a vehicle. The battery pack locking device includes a lock catch fixed on the battery pack, a lock tongue arranged on the vehicle, and a driving component arranged on the vehicle for driving the lock tongue to move. The lock tongue is driven by the driving component to support the lock catch in the height direction. The driving component includes a driving power source, a guiding support plate, and connecting plates fixed to the driving power source on the left and right sides of the lock tongue. The connecting plates are fixed to the lock tongue, and the lock tongue is located on the guiding support plate and can move relative to the guiding support plate.

[0008] As a further improvement of the utility model, the guiding support plate is provided with a guiding through hole, and the lock catch passes through the guiding through hole of the guiding support plate.

[0009] As a further improvement of the present invention, along the moving direction of the lock tongue, the width of the guide hole is greater than the width of the lock buckle, so that the lock buckle enters the guide hole, and there is still a gap when the lock buckle and the guide hole cooperate.

[0010] As a further improvement of the utility model, a wear-resistant block is provided on the upper surface of the guide support plate, and the wear-resistant block contacts with and supports the lock tongue.

[0011] As a further improvement of the utility model, guide wheels are protruding outward on the left and right sides of the guide support plate, the axial direction of the guide wheel is perpendicular to the connecting plate, and a guide groove is opened on the connecting plate in the front-to-back direction. When the driving power source drives the connecting plate and the lock tongue to move, the guide wheel moves relative to the guide groove.

[0012] As a further improvement of the present invention, the lock includes a fastener body and a lifting guide wheel fixed on the fastener body, and the locking tongue is driven by the driving assembly to abut against the lifting guide wheel along the height direction to support the lock.

[0013] As a further improvement of the utility model, the lifting guide wheel includes a support roller and a rotating shaft coaxially arranged with the support roller, the rotating shaft is fixedly connected to the fastener body, and the support roller is rotatably arranged relative to the rotating shaft.

[0014] As a further improvement of the present invention, the battery pack locking device also includes a first mounting frame fixed to the battery pack and a second mounting frame fixed to the vehicle, the lock is fixed on the first mounting frame, and the drive assembly and the guide support plate are fixed on the second mounting frame.

[0015] As a further improvement of the present invention, the battery pack locking device also includes an elastic pad, and when the locking tongue and the lock buckle are abutted against each other in the height direction, the elastic pad is located between the first mounting bracket and the second mounting bracket.

[0016] As a further improvement of the present invention, a first limiting plate is provided on the upper surface of the first mounting frame, and a second limiting plate is provided on the lower surface of the second mounting frame. The elastic pad is fixed on the first limiting plate, and when the lock tongue and the lock buckle are against each other in the height direction, the elastic pad is located between the first limiting plate and the second limiting plate.

[0017] As a further improvement of the present invention, the first limiting plate is recessed downward and provided with a receiving groove, the elastic pad is fixed in the receiving groove, and the second limiting plate is recessed upward and provided with a making way groove for the elastic pad to enter.

[0018] As a further improvement of the present utility model, when the locking tongue and the lifting guide wheel are in the locked state, the distance that the locking tongue cuts into the lifting guide wheel is greater than the clearance between the lock catch and the guiding clearance hole.

[0019] The present utility model also provides a heavy truck, which includes a battery pack and the battery pack locking device as described above.

[0020] The beneficial effects of the present utility model are as follows: The battery pack locking device and the heavy truck of the present utility model can achieve the locking of the battery pack; by arranging the driving power source between the two locking tongues, the output of the driving power source is centered and there is no deflection loss. Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram of the battery pack locking device of the present utility model;

[0022] Figure 2 is Figure 1 the enlarged structural schematic diagram of area A in

[0023] Figure 3 is the overall structural schematic diagram of the battery pack locking device of the present utility model from another angle;

[0024] Figure 4 is Figure 3 the enlarged structural schematic diagram of area B in

[0025] Figure 5 is the schematic diagram of the second mounting bracket of the battery pack locking device of the present utility model and the structure thereon;

[0026] Figure 6 is Figure 5 the enlarged structural schematic diagram of area C in

[0027] Figure 7 is Figure 5 the schematic diagram of the structure in from another angle;

[0028] Figure 8 is Figure 7 the enlarged structural schematic diagram of area D in

[0029] Figure 9 is the schematic diagram of the first mounting bracket of the battery pack locking device of the present utility model and the structure thereon;

[0030] Figure 10 is Figure 9 the enlarged structural schematic diagram of area E in . Detailed Embodiments

[0031] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] As Figures 1 to 10 shown, the heavy truck of the present utility model includes a battery pack 200 and a battery pack locking device 100.

[0035] The battery pack locking device 100 is used to lock the battery pack 200 on the heavy truck. Of course, the battery pack locking device 100 can also lock the battery pack 200 on other vehicles, not limited to heavy trucks.

[0036] The battery pack locking device 100 includes a lock catch 1 fixed on the battery pack 200, a lock tongue 2 arranged on the heavy truck, a driving assembly 3 arranged on the heavy truck to drive the lock tongue 2 to move, a guiding support plate 4 fixed on the heavy truck, an elastic pad 5, a first mounting bracket 7 fixed to the battery pack 200, and a second mounting bracket 6 fixed on the heavy truck.

[0037] The front-back direction mentioned later is the forward and backward direction of the heavy truck, and the left-right direction is the left and right sides relative to the front and back of the heavy truck.

[0038] In this embodiment, the battery pack 200 is divided into two layers. The lower layer is received in the first mounting bracket 7 and fixed to the first mounting bracket 7. The upper layer is fixed on the lower layer and protrudes upward. When the battery pack 200 is locked with the heavy truck, the upper layer protrudes and is received in the second mounting bracket 6.

[0039] As Figure 9 and Figure 10 shown, the latch 1 is fixed on the first mounting bracket 7. A first limit plate 71 is provided on the upper surface of the first mounting bracket 7. The elastic pad 5 is fixed on the first limit plate 71. The latch 1 is fixed on the first mounting bracket 7 and extends upward. In this embodiment, two elastic pads 5 are provided corresponding to each latch 1. The latch 1 is disposed between the two elastic pads 5 and extends upward through the first limit plate 71.

[0040] The latch 1 includes a fastener body 11 and a lifting guide wheel 12 fixed on the fastener body 11. A lifting through hole 111 is formed on the fastener body for the lock tongue 2 to be inserted. The lifting guide wheel 12 is disposed in the lifting through hole 111.

[0041] The lock tongue 2 is driven by the driving component 3 to abut against the lifting guide wheel 12 in the height direction to support the latch 1.

[0042] The lifting guide wheel 12 includes a support roller 121 and a rotating shaft 122 coaxially disposed with the support roller 121. The rotating shaft 122 is fixedly connected to the fastener body 11. The support roller 121 is rotatably disposed relative to the rotating shaft 122. The lifting guide wheel 12 can reduce the frictional force generated when cooperating with the lock tongue 2.

[0043] The lock tongue 2 is driven by the driving component 3 to support the latch 1 in the height direction. In this embodiment, the lock tongue 2 is integrally rod-shaped and is used to be inserted into the lifting hole and abut against the lifting guide wheel 12.

[0044] As Figures 5 to 8 shown, the driving component 3 includes a driving power source 31 and connecting plates 32 disposed on the left and right sides of the lock tongue 2 and fixed to the driving power source 31. Each pair of connecting plates 32 is fixed to two lock tongues 2, and the two lock tongues 2 are located at the front and rear ends of the connecting plates 32. The driving power source 31 is disposed in the front-rear direction between the two lock tongues 2. Here, a pair of connecting plates 32 refers to the connecting plates 32 on both sides fixed to the same driving power source 31. More specifically, the driving power source 31 is located at the middle position between the two lock tongues 2. The driving power source 31 is disposed between the two lock tongues 2, so that the force output is centered and there is no deflection loss.

[0045] However, each connecting plate 32 of the present utility model is not limited to being fixedly connected to two of the said locking tongues 2. As long as the number of the connected locking tongues 2 is an even number and the driving power source 31 is arranged in the middle, the deflection loss can be reduced.

[0046] If the driving power source 31 is an electric push rod, the electric quantity of the vehicle power supply can be directly cited; if it is a cylinder, the air source of the vehicle is cited. In this embodiment, the driving power source 31 is an electric push rod.

[0047] In this embodiment, each driving power source 31 is correspondingly provided with a pair of connecting plates 32, two locking tongues 2 and two locking buckles 1 structures. Because the battery pack 200 is relatively heavy, each driving power source 31 is only used to drive two of the said locking tongues 2 to move, which can provide a greater driving force. In addition, each heavy truck is correspondingly provided with multiple columns of driving power sources 31. The multiple columns of driving power sources 31 are arranged at intervals in the left - right direction, and each column is also provided with multiple driving power sources 31. Since the battery pack 200 of this embodiment is divided into three columns, the driving power sources 31 are four columns, and the number of driving power sources 31 in each column is three.

[0048] When the battery pack 200 is installed or uninstalled, a greater thrust or pulling force is required. Therefore, connecting plates 32 are arranged on both sides of the driving power source 31, which can reduce the thickness of the connecting plates 32 and prevent the connecting plates 32 from being deformed and jammed.

[0049] The driving assembly 3 and the guiding support plate 4 are fixed on the second mounting bracket.

[0050] The upper surface of the guiding support plate 4 is provided with wear - resistant blocks 41, and the wear - resistant blocks 41 contact and support the locking tongues 2. The locking tongues 2 are located on the guiding support plate 4 and can move relative to the guiding support plate 4.

[0051] The guiding support plate 4 is provided with guiding through - holes 43. The locking buckles 1 pass through the guiding through - holes 43 of the guiding support plate 4. The lower end of the guiding through - hole 43 of the guiding support plate 4 is provided with an inclined surface, and the head of the locking buckle 1 is provided with an inclined surface to facilitate the insertion of the locking buckle 1 into the guiding through - hole 43.

[0052] Along the moving direction of the locking tongue 2, the width of the guiding through - hole 43 is greater than the width of the locking buckle 1, so that the locking buckle 1 can enter the guiding through - hole 43, and there is still a gap when the locking buckle 1 and the guiding through - hole 43 cooperate.

[0053] When the lock tongue 2 and the lifting guide wheel 12 are in the locked state, the distance that the lock tongue 2 cuts into the lifting guide wheel 12 is greater than the gap between the lock catch 1 and the guiding clearance hole 43. When the lock catch 1 slides and abuts against the guiding clearance hole 43 of the guiding support plate 4, the lock tongue 2 still horizontally cuts the lifting guide wheel 12. After ensuring locking, even if the locking force is overcome and the battery pack 200 slides, the guiding clearance hole 43 of the guiding support plate 4 plays a limiting role to restrict further sliding of the battery pack 200. At the same time, the lock tongue 2 is the dead point support surface to support the lifting guide wheel 12, ensuring that the locking force does not weaken and cause loosening of the battery pack 200 in the Z direction.

[0054] The wear-resistant block 41 is made of wear-resistant material, which can prevent the wear of the second mounting bracket caused by the lock tongue 2 and can be replaced after wear.

[0055] In some embodiments, the wear-resistant block 41 may not be provided, and instead, a support roller 44 may be provided to adjust the sliding friction to rolling friction.

[0056] The guiding support plate 4 is provided with guide wheels 42 protruding outward on both left and right sides. The axial direction of the guide wheels 42 is perpendicular to the connecting plate 32. A guide groove 321 is formed in the connecting plate 32 in the front-back direction. When the driving power source 31 drives the connecting plate 32 and the lock tongue 2 to move, the guide wheels 42 move relative to the guide groove 321.

[0057] When the lock tongue 2 and the lock catch 1 abut against each other in the height direction, the elastic pad 5 is located between the first mounting bracket 7 and the second mounting bracket 6.

[0058] The lower surface of the second mounting bracket 6 is provided with a second limiting plate 61. When the lock tongue 2 and the lock catch 1 abut against each other in the height direction, the elastic pad 5 is located between the first limiting plate 71 and the second limiting plate 61.

[0059] The first limiting plate 71 is recessed downward to form a receiving groove 72. The elastic pad 5 is fixed in the receiving groove 72. The second limiting plate 61 is recessed upward to form a relief groove 62 for the elastic pad 5 to enter.

[0060] As Figures 1 to 4 shown, when the lock tongue 2 and the lock catch 1 abut against each other in the height direction, the first mounting bracket 7 is lifted, and the elastic pad 5 is compressed between the first limiting plate 71 and the second limiting plate 61. The elastic pad 5 can weaken the alternating stress of the lock catch 1, absorb a certain amount of impact, have a certain energy storage effect, reduce the influence of the vibration during the heavy truck driving on the battery pack locking device 100, and prevent the connection structure from breaking. In this embodiment, the elastic pad 5 is made of rubber material. And after being worn after multiple uses, only the elastic pad 5 needs to be replaced, without having to replace other structures.

[0061] The battery pack locking device 100 and heavy truck of the present utility model are configured such that the driving power source 31 drives the locking tongue 2 to move, thereby providing a greater pushing and pulling force to lock the battery pack; by arranging the driving power source 31 between the two locking tongues 2, the output of the driving power source 31 is centered without deflection loss. By providing the elastic pad 5, the influence of vibration can be reduced and the damping can be improved.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0063] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A battery pack locking device for locking a battery pack on a vehicle, characterized in that: The battery pack locking device includes a lock buckle fixed on the battery pack, a lock tongue arranged on the vehicle, and a driving assembly arranged on the vehicle for driving the lock tongue to move. The lock tongue is driven by the driving assembly to support the lock buckle along the height direction. The driving assembly includes a driving power source, a guide support plate, and connecting plates arranged on the left and right sides of the lock tongue and fixed to the driving power source. The connecting plate is fixed to the lock tongue. The lock tongue is located on the guide support plate and can move relative to the guide support plate.

2. The battery pack locking device according to claim 1, wherein: The guide support plate is provided with a guide hole, and the lock buckle passes through the guide hole of the guide support plate.

3. The battery pack locking device according to claim 2, characterized in that: Along the moving direction of the lock tongue, the width of the guide hole is greater than the width of the lock buckle, so that the lock buckle enters the guide hole, and there is still a gap when the lock buckle and the guide hole are matched.

4. The battery pack locking device according to claim 1, wherein: The upper surface of the guide support plate is provided with a wear-resistant block, and the wear-resistant block contacts the lock tongue and supports the lock tongue.

5. The battery pack locking device according to claim 1, wherein: Guide wheels are protruding outward on the left and right sides of the guide support plate, the axial direction of the guide wheel is perpendicular to the connecting plate, and a guide groove is opened on the connecting plate in the front-to-back direction. When the driving power source drives the connecting plate and the locking tongue to move, the guide wheel moves relative to the guide groove.

6. The battery pack locking device according to claim 3, characterized in that: The lock buckle includes a fastener body and a lifting guide wheel fixed on the fastener body, and the locking tongue is driven by the driving assembly to abut against the lifting guide wheel along the height direction to support the lock buckle.

7. The battery pack locking device according to claim 6, wherein: The lifting guide wheel includes a supporting roller and a rotating shaft coaxially arranged with the supporting roller, the rotating shaft is fixedly connected to the fastener body, and the supporting roller is rotatably arranged relative to the rotating shaft.

8. The battery pack locking device according to claim 2, wherein: The battery pack locking device also includes a first mounting frame fixed to the battery pack and a second mounting frame fixed to the vehicle, the lock is fixed to the first mounting frame, and the drive assembly and the guide support plate are fixed to the second mounting frame.

9. The battery pack locking device according to claim 8, wherein: The battery pack locking device also includes an elastic pad, and when the locking tongue and the locking buckle are in abutment with each other in the height direction, the elastic pad is located between the first mounting bracket and the second mounting bracket.

10. The battery pack locking device according to claim 9, characterized in that: A first limiting plate is provided on the upper surface of the first mounting frame, a second limiting plate is provided on the lower surface of the second mounting frame, the elastic pad is fixed on the first limiting plate, and when the lock tongue and the lock buckle are abutted in the height direction, the elastic pad is located between the first limiting plate and the second limiting plate.

11. The battery pack locking device according to claim 10, wherein: The first limiting plate is recessed downwards and is provided with a receiving groove, the elastic pad is fixed in the receiving groove, and the second limiting plate is recessed upwards and is provided with a making way groove for the elastic pad to enter.

12. The battery pack locking device according to claim 6, characterized in that: When the locking tongue and the lifting guide wheel are in a locked state, the distance that the locking tongue cuts into the lifting guide wheel is greater than the gap between the locking buckle and the guide hole.

13. A heavy truck, characterized in that: The heavy truck includes a battery pack and a battery pack locking device as described in any one of claims 1-11.

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