CN201904391U - Battery pack assembly structure - Google Patents

Abstract

The utility model relates to a battery pack assembly structure. The battery pack assembly structure comprises a battery pack, a backing board, an upper fixed bracket and fixing lock members, wherein the battery pack comprises a plurality of unit batteries, the backing board is arranged at the bottom of the battery pack, the upper fixed bracket is arranged at the top of the battery pack, and the fixing lock members are arranged on the outer sides of both the backing board and the upper fixed bracket. With the structure, the battery pack assembly structure can be used for assembling the battery pack on an external assembly platform, and then the battery pack is transferred into a battery case of an electric car, so that the assembly efficiency of the battery pack is greatly improved, short circuits occurring during the assembly are prevented and the assembly quality of the battery pack is ensured.

Description

Battery Pack Assembly Structure

technical field

The utility model relates to the field of battery structures, in particular to the field of battery pack structures, in particular to a battery pack assembly structure.

Background technique

At present, new energy vehicles, especially pure electric vehicles are becoming a hot spot for development. In the development and production process of pure electric cars, the space inside the car is small, and the power battery is generally arranged on the floor of the car. Most of the power batteries of electric cars are arranged under the front and rear seats. At the same time, since the car adopts a load-bearing body, in order not to affect the strength of the body too much, the battery box is usually directly welded on the floor of the body to form the body together with the floor.

Since the battery box is set under the seat of the electric car, and the power battery is a single battery, the battery pack is composed of dozens of power batteries. Therefore, when assembling the battery pack, it is not only necessary to load dozens of power batteries into the battery box, but also to connect the power wires, signal wires, and balance wires of the batteries one by one. The connecting bolts of each battery must be tightened and checked. torque. Due to the small space inside the car, generally only one person can operate it, the assembly is time-consuming and labor-intensive, and problems such as short circuits are prone to occur during the assembly process, making it difficult to guarantee the quality.

Utility model content

The purpose of the utility model is to overcome the above-mentioned shortcomings in the prior art, and provide a battery pack assembly that is convenient for battery pack assembly, can significantly improve assembly efficiency, effectively ensure assembly quality, and has a simple structure, low cost, and a wide range of applications. structure.

In order to achieve the above-mentioned purpose, the battery pack assembly structure of the present utility model has the following structure:

The main feature of the assembled structure of the battery pack is that it includes a battery pack, a bottom bracket, an upper fixing frame and a locking piece, the battery pack includes a plurality of single cells, and the bottom bracket is arranged on the At the bottom of the battery pack, the upper fixing frame is arranged on the top of the battery pack, and the locking member is arranged on the outer side of the bottom supporting plate and the upper fixing frame.

In the assembled structure of the battery pack, both the bottom support plate and the upper fixing frame are provided with battery fixing positions.

In the assembled structure of the battery pack, the locking member is a strap, and the strap includes at least one horizontal strap and at least one vertical strap, and the horizontal strap and the vertical strap are in the The bottom supporting plate and the upper fixed frame are vertically intersected.

In the assembled structure of the battery pack, the locking part further includes at least two tensioners, and the tensioners are arranged on each of the horizontal straps and vertical straps.

In the assembled structure of the battery pack, strap insertion grooves are arranged on the bottom pallet.

In the battery pack assembly structure, the upper fixing frame includes at least two steel beams and strap positioning bars fixedly connected to the steel beams, and the straps are all connected and fixed to the strap positioning bars.

In the assembled structure of the battery pack, the assembled structure of the battery pack further includes a lifting device, and the lifting device is fixed on the upper fixing frame.

In the assembled structure of the battery pack, the lifting device is a lifting ring.

The battery pack assembly structure of the utility model is adopted, because it includes a bottom bracket arranged on the bottom of the battery pack, an upper fixing frame arranged on the top of the battery pack and an upper bracket arranged on the bottom bracket and the bottom bracket of the battery pack. The locking parts on the outer side of the upper fixing frame make it possible to use the battery pack assembly structure to complete the assembly work of the battery pack on the external assembly platform, and then move the battery pack into the battery box of the electric car, thereby greatly improving the battery pack. High assembly efficiency, effectively avoiding possible short circuits and other phenomena during assembly, and ensuring the quality of battery pack assembly. The utility model has the advantages of simple structure, low cost and wide application range.

Description of drawings

FIG. 1 is a structural schematic diagram of a battery pack assembly structure of the present invention.

FIG. 2 is a structural schematic view of the assembly structure of the battery pack in the top view direction of the present invention.

FIG. 3 is a structural schematic diagram of the bottom support plate in the battery pack assembly structure of the present invention.

FIG. 4 is a structural schematic diagram of the upper fixing frame of the battery pack assembly structure of the present invention.

Detailed ways

In order to understand the technical content of the present utility model more clearly, the following examples are given in detail.

Please refer to FIG. 1 , which is a structural schematic diagram of the battery pack assembly structure of the present invention.

In one embodiment of the present utility model, the battery pack assembly structure includes a battery pack 5, a bottom plate 7, an upper fixing frame 1 and a locking member, and the battery pack 5 includes a plurality of single cells, The bottom bracket 7 is set on the bottom of the battery pack 5, the upper fixing frame 1 is set on the top of the battery pack 5, and the locking member is set on the bottom bracket 7 and the outer side of upper fixed mount 1. Wherein said locking part is a strap, and said strap includes four horizontal straps 6 and a vertical strap 2, and said horizontal strap 6 and vertical strap 2 are connected between said bottom pallet 7 and The upper fixed frame 1 is vertically intersected. The locking part also includes five tensioners 4, and the tensioners 4 are arranged on each of the horizontal straps 6 and the vertical straps 2. Both the bottom pallet 7 and the upper fixing frame 1 are provided with battery fixing positions, and the upper fixing frame 1 includes at least two steel beams and strap positioning rods fixedly connected to the steel beams. The straps mentioned above are all connected and fixed to the strap positioning rods, and the strap insertion grooves are also arranged on the bottom pallet.

In a preferred embodiment of the present utility model, the battery pack assembly structure further includes a lifting device 3, and the lifting device 3 is fixed to the upper fixing frame.

In a more preferred embodiment, the lifting device 3 is a lifting ring.

In other embodiments of the present utility model, the strap includes more than one horizontal strap 6 and more than one vertical strap 2, and the locking part also includes at least two tensioners 4, the The tensioner 4 is arranged on each of the horizontal straps 6 and the vertical straps 2 . The upper fixing frame 1 includes more than two steel beams.

In practical applications, the power battery pack of an electric vehicle is composed of single batteries connected in series and in parallel. A single battery is 3.2V, but the bus voltage of an electric vehicle is around 300V, and multiple batteries need to be connected in series to obtain a high voltage. The electric car body is a load-bearing body, the battery box is designed on the body floor, and in order to ensure the strength of the body, the battery box and the body are usually designed as a whole. However, due to the small space inside the car, it also brings assembly difficulties, which seriously affects the assembly efficiency and assembly quality of the power battery pack.

When applying the battery pack assembly structure of the present invention, first place dozens of single cells on the bottom pallet according to the wiring diagram, place the straps in advance in the strap insertion groove at the bottom of the bottom pallet, and place the batteries Finally, put the upper fixing frame on the upper part of the battery pack, and use vertical straps and tensioners to bind the battery pack together. Then connect the power line, collection line and balance line, and after finishing the lines, tighten the four horizontal straps, hang the rings, lift the packed battery pack with a crane, move the crane, and put the Extend the arm into the car body, align the battery pack with the battery box, slowly put down the battery pack, move out of the crane, take out the horizontal and vertical straps, and the battery assembly car can be completed.

Wherein the structure of the bottom supporting plate 7 is shown in FIG. 3 , which is a PVC plate. The bottom supporting plate 7 is provided with a plurality of criss-cross strap positioning grooves 71 and a flange 72 for battery positioning. The upper fixing frame 1, as shown in Figure 4, comprises two square steels 11 and a strap positioning rod 12 welded to the square steels 11.

Using the battery pack assembly structure of the utility model can significantly improve the battery pack assembly efficiency of electric cars. By using the original technology to assemble the battery pack, three people can assemble 1 to 2 vehicles in a single shift, and it can be upgraded to three people in a single shift that can assemble 8 to 10 vehicles. trolley. And use the battery pack assembly structure of the utility model to carry out the operation of wiring and connecting bolt tightening outside the vehicle, and check the torque, so the battery pack assembly quality can be improved by this.

The battery pack assembly structure of the utility model is adopted, because it includes a bottom bracket arranged on the bottom of the battery pack, an upper fixing frame arranged on the top of the battery pack and an upper bracket arranged on the bottom bracket and the bottom bracket of the battery pack. The locking parts on the outer side of the upper fixing frame make it possible to use the battery pack assembly structure to complete the assembly work of the battery pack on the external assembly platform, and then move the battery pack into the battery box of the electric car, thereby greatly improving the battery pack. High assembly efficiency, effectively avoiding possible short circuits and other phenomena during assembly, and ensuring the quality of battery pack assembly. The utility model has the advantages of simple structure, low cost and wide application range.

In this specification, the invention has been described with reference to specific embodiments thereof. However, it is obvious that various modifications and changes can be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims (8)

1. battery pack package assembly, it is characterized in that, described battery pack package assembly comprises battery pack, backing board, upper holder and solid latch fitting, described battery pack comprises a plurality of cells, described backing board is arranged at described battery pack bottom, described upper holder is arranged at the top of described battery pack, and described solid latch fitting is arranged at the outside of described backing board and upper holder.

2. battery pack package assembly according to claim 1 is characterized in that, described backing board and described upper holder are provided with the battery fixed position.

3. battery pack package assembly according to claim 1, it is characterized in that, described solid latch fitting is a tie, and described tie comprises at least one horizontal tie and at least one perpendicular tie, the square crossing setting on described backing board and upper holder of described horizontal tie and perpendicular tie.

4. battery pack package assembly according to claim 3 is characterized in that, described solid latch fitting also comprises at least two strainers, and described strainer is arranged on horizontal tie of described each bar and the perpendicular tie.

5. battery pack package assembly according to claim 3 is characterized in that described backing board is provided with the tie embedded groove.

6. battery pack package assembly according to claim 3 is characterized in that, the tie backstay that described upper holder comprises at least two girder steels and is fixedly connected on described girder steel, described tie all are connected and fixed on described tie backstay.

7. according to each described battery pack package assembly in the claim 1 to 6, it is characterized in that described battery pack package assembly also comprises boom hoisting, described boom hoisting is fixed in described upper holder.

8. battery pack package assembly according to claim 7 is characterized in that, described boom hoisting is suspension ring.

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