Quick-change battery pack suspension suitable for various chassis battery change modes and vehicle

Abstract

The utility model discloses a quick-change battery pack suspension suitable for various chassis battery changing modes, which comprises a quick-change structure used for installing a quick-change battery pack on an electric commercial vehicle, the quick-change structure comprises two oppositely arranged vehicle beams and an energy absorption box placed in the vehicle beams, the bottom surface of the energy absorption box is fixedly provided with a battery pack connecting frame, and the bottom surface of the battery pack connecting frame is fixedly provided with a battery pack. The battery pack connecting frame is connected with the quick-change battery pack through a plurality of groups of quick locking mechanisms, and the quick-change structure is connected with a vehicle body beam through at least one group of vehicle beam suspension angle plates. According to the utility model, the battery pack can be mounted at the chassis of the commercial vehicle, so that the battery pack can be disassembled and assembled below the commercial vehicle, and the technical problems of high battery replacement cost and inconvenience in battery replacement caused by the fact that the battery pack of an electric commercial vehicle is placed above a vehicle body bearing beam in the prior art can be effectively solved.

Description

Technical Field

[0001] The utility model relates to a quick-change battery pack suspension and a vehicle, in particular to a quick-change battery pack suspension and a vehicle suitable for various chassis battery-changing modes such as lifting type and trench type, belonging to the technical field of automobile manufacturing. Background Art

[0002] With the rapid development of industrial technology, electric vehicles with quick-change mode have become the main direction of the global automobile industry transformation and an important engine to promote the sustainable growth of the world economy. Electric vehicles with quick-change mode mainly include: electric passenger vehicles with quick-change mode and electric commercial vehicles with quick-change mode. Since the former only needs to meet the daily needs of users for short-distance travel and urban commuting, the volume and capacity of its battery are usually small, and chassis battery-changing is usually adopted; while electric commercial vehicles with quick-change mode are usually used for commercial purposes, such as cargo carrying, transportation, passenger transportation, etc., and need to quickly turn around in commercial application scenarios. Their body and loading capacity need to be customized according to specific business requirements. Their higher battery endurance requirements and larger battery volume limit the layout of the battery pack and the battery-changing mode, and usually adopt more complex end and side battery-changing modes. In addition, setting the quick-change battery pack above the bearing beam will directly lead to an increase in the center of gravity of the electric vehicle, a decrease in vehicle safety, and a complex and time-consuming battery pack replacement process. In commercial application scenarios that require quick turnover, the low vehicle utilization rate and operation efficiency of this mode seriously affect the commercial efficiency and customer experience. Summary of the Utility Model

[0003] In order to solve the above problems, the utility model proposes a quick-change structure suitable for various chassis battery-changing modes to improve the battery-changing applicability of commercial vehicles and meet their special requirements.

[0004] The utility model solves the above technical problems through the following technical solutions: a quick-change battery pack suspension suitable for various chassis battery-changing modes, including a quick-change structure (1) for installing a quick-change battery pack on an electric commercial vehicle. The quick-change structure includes two relatively arranged vehicle beams (7) and an energy absorption box (4) placed therein. A battery pack connecting frame (2) is fixedly installed on the bottom surface of the energy absorption box. The battery pack connecting frame is connected to the quick-change battery pack through a plurality of groups of quick locking mechanisms (8). The quick-change structure is connected to the body vehicle beam through at least one group of vehicle beam suspension gussets.

[0005] Further, the vehicle beam is adapted to a non-load-bearing body, has a C-shaped cross-section, and extends along the length direction of the electric vehicle.

[0006] Further, the energy absorption box is in a "king" shape and is composed of three transverse supports evenly distributed and longitudinal supports distributed along the center line of the transverse supports; both ends of each transverse support are connected and fixed to the vehicle beam through vehicle beam suspension gussets (5).

[0007] Furthermore, the beam suspension angle plates are in six groups, which are arranged at intervals along the length direction of the electric vehicle, and the inner spacing of the left and right vehicle suspension angle plates coincides with the energy absorption box along the width direction of the vehicle;

[0008] The cross-section of the beam suspension angle plate is L-shaped, and its horizontal plate is fixed to the battery pack connecting frame by welding. The lower half of the longitudinal plate is tightly fitted to the lateral support end of the energy absorption box by welding, and the upper half is connected and fixed to the outer side of the beam by fasteners.

[0009] Furthermore, the lower surfaces of the beam suspension angle plate and the energy absorption box are connected to the battery pack connecting frame.

[0010] Furthermore, there are sixteen groups of quick-change locking mechanisms, and each group of quick-change locking mechanisms is evenly arranged on the battery pack connecting frame along the edge positions of the width and length directions of the electric commercial vehicle; the battery pack connecting frame is rectangular in design, and four groups of quick-change locking mechanisms are arranged on both sides of the outer ring along the axial direction of the electric commercial vehicle, two groups of quick-change locking mechanisms at the front and rear, and four groups of quick-change locking mechanisms are distributed in the center of the battery pack connecting frame; the upper end of the quick-change locking mechanism is connected to the battery pack connecting frame, and the lower end is connected to the quick-change battery pack.

[0011] Furthermore, the vehicle lifting front load-bearing crossbeam (3) and the vehicle lifting rear load-bearing crossbeam (11) are connected to the outer sides of the front and rear ends of the vehicle beams via connecting pieces, and the vehicle is lifted by lifting the front and rear lifting crossbeams of the vehicle.

[0012] Furthermore, two groups of parallelogram-shaped electrical interface connection blocks (12) are symmetrically mounted on the load-bearing crossbeam after the vehicle is lifted, and the electrical interface (10) is mounted via the electrical interface connection blocks.

[0013] Furthermore, two groups of water interfaces (9) are provided in the middle of the front end of the load-bearing cross beam before the vehicle is lifted, and the water interfaces are in the form of elliptical holes and are connected to the water nozzles at the vehicle ends.

[0014] A vehicle comprises the above-mentioned quick-change battery pack suspension suitable for multiple chassis battery replacement modes.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can realize the installation of the battery pack on the chassis of the commercial vehicle, so that the battery pack can be disassembled and assembled under the commercial vehicle, which is particularly suitable for commercial vehicles such as microvans and light trucks, and can effectively solve the technical problem of high cost and inconvenience of battery replacement in the prior art electric commercial vehicles that place the battery pack above the load-bearing beam of the vehicle body. The utility model can not only solve the shortage of quick-change electric commercial vehicles in the market, but also provide an economical and efficient solution for electric commercial vehicle operators, greatly reducing the vehicle downtime caused by charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The upper right view is a schematic structural diagram of an electric commercial vehicle equipped with a quick-change structure suitable for various chassis battery replacement modes implemented in the utility model.

[0018] Figure 2 This is a schematic right view of the structure of an electric commercial vehicle equipped with a quick-change structure suitable for various chassis battery replacement modes implemented in the utility model.

[0019] Figure 3 This is an upper right view of the structure of an electric commercial vehicle after unloading the quick-change battery implemented in the utility model.

[0020] Figure 4 It is a right view schematically showing the structure of the electric commercial vehicle after unloading the quick-change battery implemented in the utility model;

[0021] Figure 5 It is a top view of the quick-change structure of the utility model which is suitable for various chassis battery replacement modes.

[0022] Figure 6 This is the upper right view of the quick-change structure of the utility model that is suitable for various chassis battery replacement modes.

[0023] Figure 7 It is a front view and a rear view of the vehicle jacking front load-bearing cross beam of the utility model.

[0024] Figure 8 It is a front view and a rear view of the load-bearing cross beam after the vehicle is jacked up according to the utility model.

[0025] Fig. 9 It is a partial view of the electrical interface connection area and the electrical interface connection block of the utility model.

[0026] Fig.10 This is a partial view of the water interface connection area of ​​the utility model.

[0027] Fig.11 The utility model discloses a vehicle beam hanging angle plate.

[0028] Fig.12 The utility model discloses a battery pack connecting frame.

[0029] Fig.13 It is a "king"-shaped energy absorption box of the utility model.

[0030] Description of the drawings: 1-quick-change structure, 2-battery pack connecting frame, 3-front load-bearing beam after vehicle lifting, 4-"W"-shaped energy absorption box, 5-vehicle beam suspension angle plate, 6-battery pack, 7-vehicle beam, 8-quick-change locking mechanism, 9-water interface, 10-electrical interface, 11-rear load-bearing beam after vehicle lifting, 12-electrical interface connecting block. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the examples of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] In this embodiment, the length direction L, the width direction W and the height direction H are respectively consistent with the corresponding directions of the electric vehicle. The connection can be direct or indirect unless otherwise specified. The fixed connection can be in a variety of ways, including connection with fasteners such as bolts, welding, interference fit connection or other appropriate fixed connection methods.

[0033] This embodiment proposes a quick-change structure suitable for multiple chassis battery replacement modes, which is used to be installed on the load-bearing beam of an electric commercial vehicle to fix the battery pack. The quick-change structure consists of two vehicle lifting load-bearing brackets, one battery pack connecting frame, six sets of vehicle beam suspension angle plates, and one "W"-shaped energy absorption box. The quick-change structure components are mainly connected by welding. In addition, the commercial vehicle that is adapted to the non-load-bearing body needs to be lifted by the front and rear vehicle lifting load-bearing crossbeams in the utility model at four points to achieve rapid battery replacement.

[0034] In an embodiment, the battery pack connection frame is connected to the quick-change battery pack through 16 groups of quick-change locking mechanisms. The quick-change mechanism in this embodiment adopts the quick-change structure of the magic cube ternary lithium battery of Shanghai Jieneng Zhidian New Energy Technology Co., Ltd. The quick-change locking mechanism is evenly arranged so that the load of the battery pack is evenly transferred to the quick-change structure so that its force is balanced. The battery pack connection frame is rectangular in design, and 4 groups of quick-change locking mechanisms are arranged on both sides of the outer ring along the axial direction of the electric commercial vehicle, 2 groups of quick-change locking mechanisms in the front and back, and 4 groups of quick-change locking mechanisms are distributed in the center of the battery pack connection frame. The quick-change locking mechanism is used to realize the limiting function of the battery pack along the length or width direction of the electric commercial vehicle, and at the same time, the battery pack can be locked or unlocked in the quick-change structure. Locking and unlocking can be achieved by lifting the mechanical arm of the battery swap station in the height direction of the electric commercial vehicle, thereby realizing the replacement of the battery pack of the electric commercial vehicle, and the operation is convenient and fast. The quick-change locking mechanism is mainly arranged at the edge of the quick-change structure along the width and length of the electric commercial vehicle, saving the space occupied by the quick-change locking mechanism in the quick-change structure accommodation area to accommodate larger size and / or more battery packs, so that the battery pack has a larger storage capacity and improves the endurance of the electric commercial vehicle. The battery pack connection frame has more bases corresponding to the quick-change locking mechanism close to the vehicle beam, which facilitates the load of the battery pack during use or loading and unloading to be transferred to the quick-change structure through the quick-change locking mechanism close to the vehicle beam, and then to the vehicle beam, reducing the load on the quick-change structure away from the vehicle beam, so that the vehicle beam supports the quick-change structure reliably and stably, effectively improving the load balance of the battery pack and the quick-change structure.

[0035] In this embodiment, the applicable electric commercial vehicle is a non-load-bearing body, so the quick-change structure connects itself to the body beam through 6 sets of beam suspension angle plates. The quick-change battery pack can be lifted by the electric commercial vehicle lifting load-bearing bracket through the mechanical arm of the battery swap station, and the lifting and movement in the height direction of the vehicle can achieve locking and unlocking, thereby realizing the replacement of the battery pack of the electric commercial vehicle. The quick-change structure is installed on the side of the beam through mechanical connection. On the one hand, it can reduce or avoid the connection between the quick-change structure and the beam occupying the space above and below the beam; on the other hand, the quick-change structure forms a accommodating area on both sides of the two beams that are away from each other and accommodates the connection between the quick-change structure and the beam. At the same time, the space in the height direction of the beam is used to suspend large battery packs, thereby improving the cruising range of electric commercial vehicles.

[0036] In the embodiment, the six groups of beam suspension angle plates hanging on both sides of the beam are prone to movement along the width direction of the commercial vehicle when the vehicle is subjected to uneven roads, bumps or other external impacts. In order to improve the stability and safety of the battery pack, the "W"-shaped energy absorption box is installed on the battery pack connection frame of the electric commercial vehicle and among the six groups of beam suspension angle plates. On the one hand, it can alleviate the impact, play a role in shock absorption and protect the vehicle's quick-change battery; on the other hand, the buffer can fill the gap between the beam and the longitudinal beam to compensate for the error of the beam and the longitudinal beam along the width direction of the electric vehicle, reducing the accuracy requirements for the quick-change bracket and the beam.

[0037] Those skilled in the art should understand that the present invention is not limited to the above-mentioned specific embodiments, and the present invention may have various changes and improvements, which all fall within the scope of the present invention to be protected.

Claims

1. A quick-change battery pack suspension suitable for multiple chassis battery replacement modes, characterized by: It includes a quick-change structure (1) for installing a quick-change battery pack on an electric commercial vehicle. The quick-change structure includes two oppositely arranged vehicle beams (7) and an energy-absorbing box (4) placed therein. A battery pack connecting frame (2) is fixedly installed on the bottom surface of the energy-absorbing box. The battery pack connecting frame is connected to the quick-change battery pack through several groups of quick locking mechanisms (8). The quick-change structure is connected to the vehicle body beam through at least one group of vehicle beam suspension angle plates.

2. The quick-change battery pack suspension suitable for multiple chassis battery replacement modes according to claim 1 is characterized in that: The vehicle beam is adapted to a non-load-bearing body, has a C-shaped cross-section, and extends along the length direction of the electric commercial vehicle.

3. The quick-change battery pack suspension suitable for multiple chassis battery replacement modes according to claim 1 is characterized in that: The energy-absorbing box is in the shape of a "king" character and is composed of three transverse supports distributed at equal intervals and longitudinal supports distributed along the center line of the transverse supports; both ends of each transverse support are connected and fixed to the vehicle beam through vehicle beam suspension angle plates (5).

4. The quick-change battery pack suspension suitable for multiple chassis battery replacement modes according to claim 3 is characterized in that: There are six groups of vehicle beam suspension angle plates, which are arranged at intervals along the length direction of the electric commercial vehicle, and the inner spacing between the vehicle suspension angle plates on the left and right sides coincides with the width direction of the vehicle of the energy-absorbing box; The cross-section of the vehicle beam suspension angle plate is L-shaped. Its horizontal plate is fixed to the battery pack connecting frame by welding. The lower half of the vertical plate is closely attached to the end of the transverse support of the energy-absorbing box by welding, and the upper half is connected and fixed to the outside of the vehicle beam through fasteners.

5. The quick-change battery pack suspension suitable for multiple chassis battery replacement modes according to claim 1 is characterized in that: The lower surfaces of the vehicle beam suspension angle plate and the energy-absorbing box are both connected to the battery pack connecting frame.

6. The quick-change battery pack suspension suitable for multiple chassis battery replacement modes according to claim 1 is characterized in that: There are sixteen groups of quick locking mechanisms. Each group of quick locking mechanisms is evenly arranged on the battery pack connecting frame along the edge positions in the width and length directions of the electric commercial vehicle; the battery pack connecting frame is designed in a rectangle. Four groups of quick locking mechanisms are arranged on both axial sides of the outer circle along the electric commercial vehicle, two groups of quick locking mechanisms at the front and back respectively, and four groups of quick locking mechanisms are distributed in the center of the battery pack connecting frame; the upper end of the quick locking mechanism is connected to the battery pack connecting frame, and the lower end is connected to the quick-change battery pack.

7. The quick-change battery pack suspension suitable for multiple chassis battery replacement modes according to claim 1 is characterized in that: The front vehicle jacking load-bearing cross beam (3) and the rear vehicle jacking load-bearing cross beam (11) are connected to the outside of the front and rear ends of the vehicle beam through connectors, and the vehicle is lifted by jacking the front and rear vehicle jacking cross beams.

8. The quick-change battery pack suspension suitable for multiple chassis battery replacement modes according to claim 7 is characterized in that: Two groups of parallelogram-shaped electrical interface connection blocks (12) are symmetrically installed on the rear vehicle jacking load-bearing cross beam, and electrical interfaces (10) are installed through the electrical interface connection blocks.

9. The quick-change battery pack suspension suitable for multiple chassis battery replacement modes according to claim 1 is characterized in that: Two water interfaces (9) are opened in the middle part of the front end of the front vehicle jacking load-bearing cross beam. The water interfaces are oval holes and are connected to the vehicle end water nozzles.

10. A vehicle, characterized in that: It includes the quick-change battery pack suspension suitable for various chassis battery-changing modes according to any one of claims 1-9.

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