Quick-change battery pack, battery pack mounting structure and automobile

Abstract

The utility model discloses a quick change type battery pack, battery pack installation structure and automobile, including battery module, fixed support and buckle subassembly, the buckle subassembly includes inclined acer buckle, the fixed support is installed on the battery module, the inclined acer buckle is installed on the fixed support, the inclined acer buckle is installed on the fixed support, and the inclined acer buckle is installed on the fixed support. The inclined maple buckle is installed on the fixed support in the mode that the inclined maple buckle can be driven to stretch into or be pulled out of a set position, and the buckle assembly has pre-tightening force enabling the inclined maple buckle to be limited to the set position. According to the battery module disclosed by the utility model, the buckle assembly is additionally arranged on the battery module, so that the battery pack can be directly clamped to the vehicle body through the inclined maple buckle after being lifted so as to complete the installation, and only the inclined maple buckle needs to be driven to release the clamping connection when the battery pack is disassembled, so that the disassembly and assembly difficulty of the battery module is greatly reduced, and the disassembly and assembly of the battery module are rapidly and conveniently completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery pack installation, and relates to a quick-change battery pack, a battery pack installation structure and a car. Background Art

[0002] A battery pack is a package that combines a lithium-ion battery pack, a battery management system (BMS), and other necessary electrical components within a protective container. It is commonly used in electric vehicles and rechargeable battery systems to provide a power source and store energy. The primary function of a battery pack is to store electrical energy and deliver it to the motor, thereby driving the vehicle or powering other devices.

[0003] Traditional new energy battery packs are mostly sheet metal box structures with upper and lower covers, which are fixed to the vehicle body by bolts and finally mounted. This structure is facing elimination due to its low energy density and inconvenience in battery module replacement and maintenance.

[0004] To solve the above problems, the structure of the battery pack needs to be improved to reduce the difficulty of disassembly and assembly of the battery module. Utility Model Content

[0005] In view of this, the present invention provides a quick-change battery pack, a battery pack mounting structure and a vehicle. The present invention adds a snap assembly to the battery pack module, so that after the battery pack is lifted, it can be directly snapped to the vehicle body through the oblique snap to complete the snap connection. When removing, it is only necessary to drive the oblique snap to release the snap connection, which greatly reduces the difficulty of disassembly and assembly of the battery module and completes the disassembly and assembly of the battery module quickly and conveniently.

[0006] The utility model discloses a quick-change battery pack, comprising a battery module, a fixed support and a buckle assembly, wherein the buckle assembly comprises an oblique maple buckle, the fixed support is mounted on the battery module, the oblique maple buckle is mounted on the fixed support in a manner that can be driven to extend into or withdraw from a set position, and the buckle assembly has a pre-tightening force that limits the oblique maple buckle to the set position.

[0007] Furthermore, the buckle assembly also includes an elastic member and a guide pin, the guide pin is slidably mounted on the fixed support, and the elastic member connects the oblique maple buckle and the guide pin and provides the pre-tightening force.

[0008] Furthermore, the oblique maple buckle is provided with a card joint, and the card joint is provided with a guide bevel and a supporting surface. The supporting surface and the guide bevel are set at an angle, and an angle α is formed between the guide bevel and the supporting surface. The angle α is 75°≥α≥25°.

[0009] Furthermore, the elastic coefficient of the elastic member is k, and the elastic coefficient k≥G / 2X;

[0010] Where G is the gravity acting on the battery module, and X is the maximum displacement of the inclined maple buckle.

[0011] Furthermore, the oblique maple buckle includes a support plate and a slide seat, the card joint is arranged at the top of the support plate along the Z direction, the slide seat is arranged at the bottom of the support plate along the Z direction, and the oblique maple buckle is slidably installed on the fixed support through the slide seat.

[0012] Furthermore, the buckle assembly also includes a limit plate, the fixed support has a slide groove arranged along the Y direction, the limit plate has a mounting portion and a limit portion, the slide of the oblique maple buckle is slidably mounted on the slide groove of the fixed support, the limit plate is detachably mounted on the fixed support through the mounting portion, and the limit portion of the limit plate is inserted into the slide groove to form a limit for the slide.

[0013] Furthermore, the fixed support has a fixed back plate arranged along the Z direction, and the guide pin is installed on the fixed back plate in a manner that can be driven to slide along the Y direction.

[0014] The present utility model also discloses a battery pack installation structure, including the aforementioned quick-change battery pack, and also including an elastic damping plate, the elastic damping plate having an elastic force along the Z direction, the elastic damping plate being installed at a set position, and the abutting surface of the card connector being arranged to abut against the top surface of the elastic damping plate.

[0015] Furthermore, the elastic damping plate includes a bottom plate, an elastic layer and a top plate sequentially arranged along the Z direction, and the elastic layer has an elastic force along the Z direction.

[0016] The utility model also discloses a car, which is provided with the above-mentioned battery pack installation structure, and the set position is the car body load-bearing beam.

[0017] Beneficial effects of the utility model:

[0018] The utility model discloses a quick-change battery pack, a battery pack installation structure and a vehicle. The utility model adds a snap assembly to the battery pack module, and the oblique maple snap assembly is slidably arranged and cooperates with the guide inclined surface so that when the battery module is lifted and installed, the oblique maple snap assembly will be pushed open under the action of the lifting force. After the battery module is lifted into place, the elastic member directly rebounds the oblique maple snap assembly to reset it, thereby completing the snap-fit ​​installation of the battery module on the load-bearing beam of the vehicle; when removing the battery pack, it is only necessary to pull the guide pin to contact the snap-fit ​​of the oblique maple snap assembly on the load-bearing beam of the vehicle, which greatly reduces the difficulty of disassembling and installing the battery module and completes the disassembly and installation of the battery module quickly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the explosion structure of the automobile of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the battery pack installation structure of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the quick-change battery pack of the present utility model;

[0022] Figure 4 This is a schematic diagram of the assembly structure of the fixed support and the buckle assembly of the utility model;

[0023] Figure 5 This is a structural diagram of the fixed support of the utility model;

[0024] Figure 6 It is a side view of the fixed support of the utility model;

[0025] Figure 7 This is a schematic structural diagram of the oblique maple buckle of the present utility model;

[0026] Figure 8 It is a side view of the oblique maple buckle of the utility model;

[0027] Figure 9 This is a schematic structural diagram of the limiting plate of the present utility model;

[0028] Figure 10 This is a schematic structural diagram of the elastic damping plate of the present utility model. DETAILED DESCRIPTION

[0029] It should be noted that, in the description of this specification, the terms "upper", "lower", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] As shown in the figure, the present invention discloses a quick-change battery pack, comprising a battery module 1, a fixed support 2, and a snap assembly. The snap assembly includes an oblique snap 3. The fixed support 2 is mounted on the battery module 1. The oblique snap 3 is mounted on the fixed support 2 in a manner that can be driven to extend into or out of a set position. The snap assembly has a preload force that restricts the oblique snap 3 to the set position. In this embodiment, the snap assembly also includes an elastic member 7 and a guide pin 6. The guide pin 6 is slidably mounted on the fixed support 2. The elastic member 7 connects the oblique snap 3 and the guide pin 6 and provides the preload force. In this embodiment, the battery module 1 integrates the Cell, BMU, and temperature control module, and the fixed support 2 is also fixed to the outer shell of the battery module 1. The oblique maple clip 3 is slidably set on the fixed support 2. It can be driven to slide and then extend into a set position to form a snap connection, so that the battery pack can be directly installed, or it can be driven to be pulled out, so that the battery module 1 can be directly removed. The setting of the preload force is to ensure that the oblique maple clip 3 will not be dislocated from the set position due to gravity, vibration, etc. after it is extended into the set position, thereby improving the firmness and reliability of the installation of the battery module 1. In this embodiment, the elastic member 7 is a spring, which is mainly used to provide a pre-tightening force (the elastic force of the spring is the pre-tightening force, which is used to press the oblique maple buckle 3 to prevent it from moving out of the set position), and can serve as a part of the connection between the oblique maple buckle 3 and the fixed support 2. When the battery module 1 needs to be removed, it is only necessary to pull the guide pin 6, and the guide pin 6 pulls the oblique maple buckle 3 through the elastic member 7, thereby contacting and clamping, and removing the battery module 1.

[0031] In this embodiment, the oblique maple buckle 3 is provided with a clamping joint 303, which is provided with a guide bevel 304 and a supporting surface 305. The supporting surface 305 and the guide bevel 304 are arranged at an angle, forming an angle α between the guide bevel 304 and the supporting surface 305. The angle α is 75° ≥ α ≥ 25°. As shown in the figure, the cross-section of the clamping joint 303 is triangular, with its inclined surface serving as the guide bevel 304 and its bottom surface serving as the supporting surface 305. Due to the setting of the guide bevel 304, the battery module 1 only needs to be lifted during installation to complete the installation. During the lifting, the battery module 1 is subjected to an upward lifting force along the Z direction. Due to the presence of the inclined guide bevel 304, the lifting force acting on the guide bevel 304 will eventually form a driving force along the Y direction, pushing the bevel buckle 3 to move. When the lifting is in place, that is, when the clamping joint 303 of the bevel buckle 3 can be snapped into the set position, the lifting force disappears, and the bevel buckle 3 will be pushed back into place by the elastic member 7. The clamping joint 303 is then snapped into the set position, thus completing the installation of the battery module 1. The supporting surface 305 and the guide bevel 304 are set at an angle. In this embodiment, the supporting surface 305 is parallel to the set position so that the supporting surface 305 fits the set position, ensuring that the battery module 1 is firmly and reliably installed. The abutting surface 305 and the guiding bevel 304 are arranged at an angle. The angle α between the two directly reflects the degree of inclination of the guiding bevel 304. If the inclination of the guiding bevel 304 is too large, it may not be able to provide guidance and force, which will make the inclined maple clip 3 slide less smoothly during the lifting of the battery module 1. If the angle is too small, the aforementioned driving force will be insufficient, which will also affect installation. The angle α is no greater than 75° and no less than 25° to ensure smooth sliding of the inclined maple clip 3. The preferred angle α is 45°.

[0032] In this embodiment, the elastic coefficient of the elastic member 7 is k, where k ≥ G / 2X, where G is the gravity acting on the battery module 1 and X is the maximum displacement of the oblique buckle 3. The oblique buckle 3 is slidably mounted and therefore has a maximum sliding displacement, X being the maximum displacement of the oblique buckle 3. This is well understood by those skilled in the art and will not be further elaborated here. When designing the elastic member 7, its elastic coefficient is directly related to the magnitude of the preload force. If the elastic coefficient is too low, the battery module 1 cannot be securely installed, resulting in the battery module 1 being loosely mounted and falling off during use. Therefore, this is limited.

[0033] In this embodiment, the oblique maple buckle 3 includes a support plate 302 and a slide 301. The clamping joint 303 is arranged at the top of the support plate 302 along the Z direction, and the slide 301 is arranged at the bottom of the support plate 302 along the Z direction. The oblique maple buckle 3 is slidably mounted on the fixed support 2 via the slide 301. In this embodiment, the buckle assembly also includes a limiting plate 8. The fixed support 2 has a slide groove 202 arranged along the Y direction. The limiting plate 8 has a mounting portion 801 and a limiting portion 802. The slide 301 of the oblique maple buckle 3 is slidably mounted on the slide groove 202 of the fixed support 2. The limiting plate 8 is detachably mounted on the fixed support 2 via the mounting portion 801. The limiting portion 802 of the limiting plate 8 is inserted into the slide groove 202 to limit the slide 301. In this embodiment, the slide 301 is a convex-shaped structure as shown in the figure, and the slot 202 is a concave-shaped structure that conforms to the slide 301. The slide 301 of the oblique buckle 3 is slidably inserted into the slot 202, thereby enabling the oblique buckle 3 to be slidably installed on the fixed support 2. The limiting plate 8 is an L-shaped structure as shown in the figure. The mounting portion 801 of the limiting plate 8 is mounted on the top surface of the slot 202 of the fixed support 2, and the limiting portion 802 extends downward along the Z direction into the slot 202. The limiting plate 8 is used to limit the oblique buckle 3 after the battery module 1 is installed, preventing the oblique buckle 3 from sliding away from the set position and thus leaving the set position. When the battery module 1 needs to be removed, the limiting plate 8 must be removed first to release the restraint on the oblique buckle 3. Its installation can be achieved through a detachable method such as a snap-on connection, which is more convenient for assembly and disassembly.

[0034] In this embodiment, the fixed support 2 includes a fixed backplate 201 extending along the Z-direction, and the guide pin 6 is mounted on the fixed backplate 201 so as to be driven to slide along the Y-direction. In this embodiment, a through-slot is provided in the fixed backplate 201, through which the guide pin 6 is slidably mounted. The guide pin 6 of the fixed backplate 201 can be limited in position by providing a larger diameter stopper at the end or by providing a stopper pin. In this embodiment, the guide pin 6 also serves as a guide, ensuring that the inclined maple buckle 3 can only slide along the Y-direction.

[0035] The present invention also discloses a battery pack installation structure, comprising the aforementioned quick-change battery pack, and further comprising an elastic damping plate 4, said elastic damping plate 4 having an elastic force along the Z direction. Said elastic damping plate 4 is installed in a set position, and the abutting surface 305 of the clamping connector 303 is arranged to abut against the top surface of the elastic damping plate 4. As shown in the figure, when the battery module 1 is installed in place, the abutting surface 305 of the clamping connector 303 abuts against the top surface of the elastic damping plate 4, thereby enabling the hanging of the battery module 1. The elastic force of the elastic damping plate 4 in the Z direction can provide shock absorption protection for the battery module 1, facilitating safe loading and operation.

[0036] In this embodiment, the elastic damping plate 4 includes a bottom plate 403, an elastic layer 402, and a top plate 401, which are sequentially arranged along the Z direction as shown in the figure. The elastic layer 402 exerts an elastic force along the Z direction. In this embodiment, the bottom plate 403 and the top plate 401 are both steel plates, and the elastic layer 402 is made of a highly elastic material. Of course, the top plate 401 can also be made of an aluminum alloy plate, a carbon fiber plate, or a high-strength plastic. Those skilled in the art can select the specific material according to actual conditions.

[0037] The present invention also discloses an automobile equipped with the aforementioned battery pack mounting structure, wherein the designated location is the vehicle's body beam 5. As shown in the figure, the battery module 1 in this embodiment is mounted on the vehicle body beam 5. Multiple fixed supports 2 are symmetrically arranged, and multiple corresponding snap assemblies are also provided to further enhance installation reliability. The battery module 1 in this embodiment can be lifted and lowered using a robotic arm.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A quick-change battery pack, characterized in that: The invention comprises a battery module, a fixed support and a snap assembly, wherein the snap assembly comprises an inclined maple snap, the fixed support is mounted on the battery module, the inclined maple snap is mounted on the fixed support in a manner that can be driven to extend into or withdraw from a set position, and the snap assembly has a pre-tightening force that limits the inclined maple snap to the set position.

2. The quick-change battery pack according to claim 1, wherein: The buckle assembly also includes an elastic member and a guide pin. The guide pin is slidably mounted on the fixed support. The elastic member connects the oblique maple buckle and the guide pin and provides the pre-tightening force.

3. The quick-change battery pack according to claim 2, wherein: The oblique maple buckle is provided with a card joint, and the card joint is provided with a guide bevel and a supporting surface. The supporting surface and the guide bevel are arranged at an angle, and an angle α is formed between the guide bevel and the supporting surface. The angle α is 75°≥α≥25°.

4. The quick-change battery pack according to claim 2, wherein: The elastic coefficient of the elastic member is k, and the elastic coefficient k≥G / 2X; Where G is the gravity acting on the battery module, and X is the maximum displacement of the inclined maple buckle.

5. The quick-change battery pack according to claim 3, wherein: The oblique maple buckle includes a support plate and a slide seat. The card joint is arranged at the top of the support plate along the Z direction, and the slide seat is arranged at the bottom of the support plate along the Z direction. The oblique maple buckle is slidably installed on the fixed support through the slide seat.

6. The quick-change battery pack according to claim 5, characterized in that: The buckle assembly also includes a limit plate, the fixed support has a slide groove arranged along the Y direction, the limit plate has a mounting portion and a limit portion, the slide of the oblique maple buckle is slidably mounted on the slide groove of the fixed support, the limit plate is detachably mounted on the fixed support through the mounting portion, and the limit portion of the limit plate is inserted into the slide groove to form a limit for the slide.

7. The quick-change battery pack according to claim 2, wherein: The fixed support has a fixed back plate arranged along the Z direction, and the guide pin is installed on the fixed back plate in a manner that can be driven to slide along the Y direction.

8. A battery pack installation structure, comprising the quick-change battery pack according to any one of claims 1 to 7, characterized in that: It also includes an elastic damping plate, which has elastic force along the Z direction. The elastic damping plate is installed at a set position, and the abutting surface of the card joint is arranged to abut against the top surface of the elastic damping plate.

9. The battery pack installation structure according to claim 8, characterized in that: The elastic damping plate includes a bottom plate, an elastic layer and a top plate sequentially arranged along the Z direction, and the elastic layer has elastic force along the Z direction.

10. An automobile, characterized in that: The automobile is provided with a battery pack installation structure as described in any one of claims 8 to 9, and the set position is a body load beam of the automobile.

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