CN114590158A - An electric vehicle power battery replacement bracket - Google Patents

Abstract

The utility model provides an electric automobile trades electric bracket, relates to the quick replacement power battery technique in electric automobile tonifying energy field, and its structural main characteristic is: the bracket is a square or rectangular bracket formed by combining two longitudinal beams (including more than two) and two cross beams (including more than two), wherein the longitudinal beams are provided with bearing rollers, positioning mounting holes for arranging power battery boxes and a reinforcing vertical plate, the reinforcing vertical plate is provided with a fixed battery box, one end of the bracket is provided with a longitudinal positioning pin and an electrical appliance connector, and the other end of the bracket is provided with a transverse positioning pin hole and a handle for pushing and pulling force points of the bracket. According to the battery replacement bracket for the electric automobile, the longitudinal positioning pin is arranged at one end of the bracket, and the reinforcing vertical plate is arranged on the longitudinal beam, so that two methods capable of compositely relieving the damage influence of the chassis stress of the whole automobile on the battery box are realized, the whole-box type quick battery replacement of a small-sized electric automobile can be realized, and the whole-box type quick battery replacement of a large-sized electric automobile can also be realized.

Description

An electric vehicle power battery replacement bracket

Technical field:

Rapid replacement power battery technology in the field of electric vehicle energy supplementation.

Background technique:

After nearly ten years of rapid development of electric vehicles, the electric vehicle market side of the charging and energy supplement mode has increasingly highlighted many drawbacks. Fast charging still takes more than half an hour. The charging efficiency is low, but the cost of facilities is very high. The key is that it is not safe to affect the life of the battery, and the power grid is heavily burdened. In short, the simple charging mode cannot meet the healthy development of the industry.

In recent years, after several electric vehicle companies in China have explored the way to quickly replace the power battery to replenish energy, it has been proved that rapid battery replacement and energy replenishment can effectively solve the above-mentioned various drawbacks, and it is a good electric vehicle. The key to the car energy supplement solution is to replace the battery to supplement energy, which can technically "separate the vehicle and electricity", and also enable the two industries of vehicle manufacturing and battery operation to realize the industrial division of "vehicle and electricity separation", so as to realize the industrial division of "vehicle and electricity separation". It will greatly promote the virtuous development of the electric vehicle industry like the "vehicle oil separation" of fuel vehicles.

The electric vehicle battery replacement technology mode is mainly divided into: upper, lower, left, right, front, rear and middle replacement according to the vehicle orientation; the power battery to be replaced is mainly divided into: whole box type and sub-box type;

The earliest large-scale power exchange in China adopts sub-box power exchange. For example, the applied power exchange bus has nine power battery boxes, and the power exchange taxi has four power battery boxes. The main problem is (connection safety) performance, power battery consistency, conversion efficiency and power exchange efficiency). After 2016, several small new energy passenger car companies adopted the whole box chassis (bottom) for power exchange, such as BAIC, Weilai, etc. The practical performance of several years of market operation has proved that: for the problems listed above, the whole-box type of power exchange is completely superior to the sub-box type of power exchange. At present, the industry and relevant departments have clearly supported the development of the whole-box type of power exchange mode.

However, due to the strength of the battery box and the structural stress and deformation of the chassis of the vehicle, the FCL battery swap mode is currently only suitable for small vehicle applications, and power battery explosion accidents also occur from time to time. The power battery box of large electric vehicles is more difficult to realize the application of full-box power exchange. The main reason is that if the battery of large electric vehicles is designed as a whole box, one is large in size, and the other is heavy in weight, which is difficult to replace. The most critical reason is that most of the large vehicles are commercial vehicles, and they are frequently used with heavy loads. The stress and deformation of the vehicle structure will cause mechanical interference to the power battery box arranged on the chassis, and may even lead to accidents such as ignition and explosion of the power battery.

Invention content:

In order to solve the problem of the influence of the above-mentioned vehicle structural stress on the power battery box, the present invention provides an electric vehicle power exchange bracket, so that both small electric vehicles and large electric vehicles can safely realize the whole box type power exchange and energy supplement mode. .

The technical scheme adopted in the present invention is: using a design of an electric vehicle battery replacement bracket, two sets of methods that can compositely relieve the damage of the entire vehicle chassis stress on the battery box are realized, and the specific design is:

An electric vehicle power exchange bracket, the main structural features of which are: a square or rectangular frame bracket composed of two (including more than two) longitudinal beams and two (including more than two) beams, wherein the longitudinal beam Load-bearing rollers and positioning and mounting holes for arranging the power battery box are installed on the beam. One end of the bracket is installed with longitudinal positioning pins and electrical connectors, and the other end of the bracket is installed with horizontal positioning pin holes and push-pull bracket force points. handle.

One of the methods for dealing with the influence of the stress and deformation of the vehicle structure on the electric vehicle power exchange bracket is: a longitudinal positioning pin is installed at one end of the bracket, and the positioning pin is arranged on the longitudinal center axis of the bracket. The function of the longitudinal cylindrical pin body is that when the plane between the two longitudinal beams of the vehicle chassis fluctuates, the power exchange bracket can rotate around the positioning pin to relieve the influence of the chassis stress on the power exchange bracket.

Another method for dealing with the influence of the stress and deformation of the vehicle structure on itself is to install the positioning mounting holes of the power battery box on the longitudinal beams, and strengthen the positioning mounting holes with bolts or riveting or welding. The vertical plate and the reinforcing vertical plate are provided with a plurality of mounting holes, some of which correspond to the positioning and mounting holes of the longitudinal beam, and the other holes correspond to the mounting holes of the battery box; one of the functions of the reinforcing vertical plate is to install the battery box The second main function is to increase the strength of the longitudinal beam section of the reinforced vertical plate. The purpose is to make the longitudinal beam section of the reinforced vertical plate stronger than the longitudinal beam section between the non-reinforced vertical plates. The difference is achieved. The influence of the chassis stress on the battery swap tray can be released in a serpentine-like relief manner, and each battery box can be fixed independently and has a relatively limited micro-displacement.

The load-bearing rollers installed on the longitudinal beams are concave wheels, which can be clamped on the track on the chassis of the vehicle to roll back and forth, and also play the role of sliding and guiding on the track. For the primary positioning function, in practice, the distribution of the work to the rollers, in order to reduce noise and durability, should be closely arranged at both ends.

The electrical connector is flexibly arranged at the direction end of the bracket positioning pin, and has waterproof and temperature detection functions.

The other end of the bracket is fixedly installed with a horizontal positioning pin hole. When the power-changing bracket is pushed into the car body through the track on the chassis, the positioning pin is due to the linear forward movement of the roller and the chassis track of the car body, forming a primary positioning. , and then insert the front tip of the locating pin pin body into the body pin hole for secondary positioning, the bracket can be accurately pushed into the body, the root of the locating pin can stand against the body bracket and enter the stop, and the lateral locating pin hole is at the locked position , the lateral positioning pin of the car body is inserted into the lateral positioning pin hole, so that the vertical positioning pin and the lateral positioning pin of the car body form a vertical axis locking mechanism, and the power exchange bracket is firmly locked on the car body.

The battery box of the battery replacement bracket for an electric vehicle, in the case of more than two boxes, the spacing arrangement of the battery boxes should leave a gap, the purpose is to make the battery box under the condition of stress on the chassis of the whole vehicle. There will be no collision between the battery boxes and the battery boxes and the electrical energy and communication signals between the electrical connectors are connected through the wiring harness.

In the battery box of the battery replacement bracket of an electric vehicle, when the width of the battery box of a small vehicle is narrow, the battery box can be a complete battery box on the battery replacement bracket. Because the rectangular column-shaped battery box (9) and the positioning pin (5) have become a central axis shape, it is like a piece of wood lying on a wide bed, no matter how bumpy the bed is, the wood is hard to be damaged.

When the battery box (9) is set as an integral battery box, the manufacturing process can be directly riveted and welded to the power exchange bracket.

The beneficial effects that the present invention produces are as follows:

1) An electric vehicle battery replacement bracket provided by the present invention realizes two sets of methods that can compositely relieve the damage of the entire vehicle chassis stress on the battery box, which can not only quickly replace the small electric vehicle with the whole box, but also can It enables large electric vehicles to achieve full-box fast battery replacement.

2) An electric vehicle battery replacement bracket provided by the present invention is provided with a vertical positioning pin and a horizontal positioning pin hole, so as to realize the locking method of the vertical axis lock of the battery box by the chassis of the vehicle, which greatly improves the performance of the battery box. Wear resistance and low temperature resistance of the locking mechanism of the power battery box.

3) In an electric vehicle power exchange bracket provided by the present invention, no matter if one or more battery boxes are arranged on it, a special power exchange device with a track adapted to the power exchange bracket roller 3 is used to pass the battery. The on-board power-changing bracket can pull out all the power-deficient batteries at one time, and then quickly push in the fully-charged spare power-changing bracket and the battery box it carries.

Further detailed description will be given below in conjunction with the accompanying drawings and specific implementation manners.

Description of drawings:

1 is a schematic diagram of an electric vehicle battery swap bracket according to an embodiment of the present invention

FIG. 2 is a schematic diagram of the arrangement of the multi-battery box according to the embodiment of the present invention.

FIG. 3 is a schematic diagram of the arrangement of a single battery box according to an embodiment of the present invention.

The above drawings: (1) is a longitudinal beam, (2) is a beam, (3) is a roller, (4) is a positioning mounting hole, (5) is a positioning pin, (6) is an electrical connector, (7) is The positioning pin hole, (8) is the handle (9) is the battery box (10) is the reinforced vertical plate

Detailed ways:

Embodiment The structure of an electric vehicle power exchange bracket is shown in FIG. 1 .

Its structure is designed and manufactured as follows: a rectangular frame structure is welded by two longitudinal beams (1) and two transverse beams (2), wherein the longitudinal beam (1) is a C-shaped steel profile, with the C port facing down, and rows of load-bearing are installed. The rollers (3), in practice, the distribution of the rollers (3) should be closely arranged at both ends in order to reduce noise and durability. Positioning and mounting holes (4) of the power battery box (9) are also arranged on the longitudinal beam (1), and the number and spacing of the holes are specifically set by the number and spacing of the battery boxes. One end of the bracket is installed with a vertical positioning pin (5) and an electrical connector (6), and the other end of the bracket is installed with a horizontal transverse positioning pin hole (7) and a handle (8) for pushing and pulling the bracket. It should be noted that the battery box (9) for the battery replacement bracket for large electric vehicles is relatively heavy, and the longitudinal beams (1) can be designed with three or more than one, and the same is true for the transverse beams (2).

Two methods for relieving the stress of the chassis can be realized through the design of a battery swap bracket for an electric vehicle in the above embodiment.

A method that can be implemented to cope with the stress and deformation of the vehicle structure is shown in FIG. 2 in conjunction with FIG. 2 .

A longitudinal positioning pin (5) is installed at one end of the bracket, and the positioning pin (5) is a longitudinal cylindrical pin body arranged on the longitudinal center axis of the bracket. The power exchange bracket can be rotated around the positioning pin (5) to relieve the influence of the chassis stress on the power exchange bracket.

Another method that can be implemented to cope with the stress and deformation of the vehicle structure is shown in FIG. 3 in conjunction with FIG. 3 .

The positioning and mounting holes (4) of the power battery box (9) are installed on the longitudinal beam (1), and the reinforcing vertical plate (10) is connected by bolts and riveting welding. The reinforcing vertical plate (10) is a strengthened vertical plate, and the function is Strengthen the longitudinal beam strength between the two positioning mounting holes (4). That is to say, the stress deformation of the whole vehicle will lead to the deformation of the power exchange bracket, but the strength of the longitudinal beam section between the reinforcing vertical plates (10) is greater than the strength of the longitudinal beam section between the two reinforcing vertical plates (10). The serpentine shape of the longitudinal beam section between the plates (10) eases the release, and in addition to [0010], it can ensure that the battery box (9) is basically not damaged by the stress of the vehicle chassis.

The above is a structure of an electric vehicle power exchange bracket and a method for relieving the stress of the chassis. The following describes the fixing implementation on the vehicle chassis.

The load-bearing rollers (3) installed on the longitudinal beams (1) are concave wheels, which can be clamped and ride on the track on the chassis of the vehicle to roll back and forth, and can not swing left and right, but also play the role of sliding and guiding on the track. , to blindly insert the positioning pin (5) into the pin hole of the vehicle body to play a primary positioning role.

The other end of the bracket is fixedly installed with a horizontal lateral positioning pin hole (7). After the positioning pin (5) is inserted into the pin hole of the vehicle body for secondary positioning, the bracket can be accurately pushed into the vehicle body, the root of the positioning pin (5) is against the vehicle body, and the bracket When the forward travel is stopped, the positioning pin hole (7) is at the locked position, and the lateral positioning pin of the vehicle body is inserted into the positioning pin hole (7), so that the vertical positioning pin (5) and the lateral positioning pin of the vehicle body form a vertical axis With the locking mechanism, the power changing bracket is firmly locked on the car body.

The electrical connector (6) is flexibly arranged at the direction end of the bracket positioning pin (5), and has waterproof and temperature detection functions.

In the battery box (9) of the battery replacement bracket of an electric vehicle, in the case of more than two boxes, the spacing arrangement of the battery boxes is to leave a gap, and the purpose is to avoid the stress on the chassis of the whole vehicle. The lower battery boxes (9) will not collide and interfere; the electric energy and the communication signal between the battery box and the battery box and the electrical connector (6) are connected through the wire harness.

The battery box (9) for the battery-changing bracket of an electric vehicle, when the width of the battery box (9) for a small vehicle is narrow, the battery box (9) can be a complete piece on the battery-changing bracket. battery box. Because the rectangular column-shaped battery box (9) and the positioning pin (5) have become a central axis, and the length is basically about 2500 mm, it is like a piece of wood lying on a wide bed, no matter how bumpy the bed is, It can fully cope with and mitigate the effects of vehicle stress. When the battery box (9) is set as an integral battery box, the manufacturing process can be directly riveted and welded to the power exchange bracket.

In this regard, an electric vehicle power exchange bracket, no matter if one or more battery boxes are arranged on it, use a special power exchange device with a track adapted to the power exchange bracket roller 3 to pass the on-board power exchange bracket. Pull out all the power-deficient batteries at one time, and then quickly push in the spare power-changing bracket with full power at one time. Generally, the power-changing operation can be completed within one minute.

Claims (8)

1. An electric vehicle power exchange bracket, the main structural feature of which is that the bracket is composed of two (including more than two) longitudinal beams (1) and two (including more than two) cross beams (2). A square or rectangular bracket, wherein the longitudinal beam (1) is provided with a load-bearing roller (3), a positioning and mounting hole (4) for arranging the power battery box (9), and a reinforcing vertical plate (10), and the reinforcing vertical plate (10) Install and fix the battery box (9), one end of the bracket is installed with a longitudinal positioning pin (5) and an electrical connector (6), and the other end of the bracket is installed with a horizontal positioning pin hole (7) and a push-pull Handles (8) for the hard point of the bracket. 2. The electric vehicle power exchange bracket according to claim 1, wherein a method for dealing with the influence of the stress and deformation of the vehicle structure on itself is: a longitudinal positioning pin (5) is installed at one end of the bracket, and the positioning pin (5). 5) is a longitudinal cylindrical pin body arranged on the longitudinal center axis of the bracket, its function is that when the vehicle chassis plane fluctuates, the power exchange bracket can rotate around the axis of the positioning pin (5) to relieve the chassis stress on the power exchange bracket. external influence. 3. According to claim 1, the described electric vehicle power exchange bracket, another method for dealing with the influence of the stress and deformation of the vehicle structure on itself is: the positioning and mounting holes (4) for installing the power battery box on the longitudinal beam (1). ), bolt or rivet or weld the reinforcing vertical plate (10) on the positioning and mounting holes (4), and set a plurality of mounting holes on the reinforcing vertical plate (10), some of which correspond to the positioning of the longitudinal beam (1). The mounting holes (4) and the other holes correspond to the mounting holes of the battery box (9); the reinforcing vertical plate (10) has one function to install the battery box (9), and the second main function is to make the reinforcing vertical plate (10) ), the purpose is to make the strength of the longitudinal beam section of the reinforced vertical plate (10) greater than the strength of the longitudinal beam section between the non-reinforced vertical plates (10), and the flexibility between different longitudinal beam sections is different. The influence of the chassis stress on the battery-changing tray can be released in a serpentine-like relief manner, and each battery box (9) can be fixed independently and can be slightly displaced relatively in a limited manner. 4. According to claim 1, the load-bearing rollers (3) installed on the longitudinal beam (1) are concave rollers, the rollers (3) are arranged in a plurality of rows, and the arrangement spacing is dense at both ends and sparse in the middle. 5. The electrical connector (6) according to claim 1, which is flexibly arranged at the end of the bracket positioning pin (5), and is provided with a waterproof gasket and a temperature detection sensor. 6. The other end of the frame bracket according to claim 1, is fixedly installed with a positioning pin hole (7), and the lateral positioning lock pin at the vehicle body end is inserted into the positioning pin hole (7) and is perpendicular to the positioning pin (5) The shaft lock structure locks the battery box. 7. The battery box (9) according to claim 3, in the case of two or more boxes, the spacing of the battery boxes is arranged with gaps, and the battery box (9) is connected with the battery box (9) and electrical appliances The electrical energy and the communication signal between the devices (6) are connected through the wiring harness. 8. In the case where the width of the battery box (9) of the battery-changing bracket of an electric vehicle is narrow, the battery box (9) is an integral battery box. The production process can be directly riveted and welded to the power exchange bracket.

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