CN105810861A - An electric vehicle battery pack - Google Patents

Abstract

The invention provides a battery pack of an electric vehicle. The battery pack comprises a battery pack installation frame with a structure matching with the inner space of an electric vehicle, multiple battery cells which are combined and are fixed in the battery pack installation frame, a distributed battery controller which is arranged in the battery pack installation frame and is connected to the battery cells, and a connector which is arranged at the outer side of the battery pack installation frame and is connected to a power connection port of the electric vehicle. The battery cells are combined in different ways to form a special-shaped battery pack so that maximized use of an electric vehicle space is realized. The battery pack is conducive to a compact layout design of an electric vehicle and increases an electric vehicle battery pack capacity as large as possible.

Description

An electric vehicle battery pack

technical field

The invention relates to the technical field of electric vehicles, in particular to an electric vehicle battery pack.

Background technique

At present, the electric vehicle industry is developing rapidly, and key technical directions such as motors, batteries, and electronic controls are constantly being optimized and improved. The research on battery technology is one of the core technologies for the current development of electric vehicles. The battery is the power source of electric vehicles and an energy storage device. Its capacity directly affects the mileage of the electric vehicle, and its storage capacity directly affects the mileage of the vehicle. Under the premise of a certain energy density of the battery cell, its volume The size determines how much energy it stores, and the different power battery arrangements directly determine its volume. Electric vehicle battery packs are gradually moving forward from the simple packaged batteries in the past to characteristic designs. The specific installation arrangement of battery packs for different models has become an important optimization design direction for electric vehicle battery packs.

There are two main ways to arrange the battery packs of existing electric vehicles: one is to arrange the entire battery pack in a centralized manner, and install the entire battery pack inside the longitudinal beam or under the floor, but the car has front and rear suspensions, left and right longitudinal beams, and mounting seats. Beams of chairs, etc. These necessary components limit the layout space of battery packs. It is difficult to arrange battery packs reasonably without making a lot of modifications to the car body. It is necessary to modify the floor and longitudinal beams, which is likely to cause potential damage. The other is to arrange the battery packs in a decentralized manner, and fix multiple sets of battery packs in available spaces such as the front cabin, the underfloor of the body, and the trunk, but this method is not convenient for installing and disassembling the battery packs. The ambient temperature of the battery pack and the battery pack under the body floor is different, which is not convenient for the design of the vehicle thermal management system. In addition, if the battery pack is arranged separately in the front cabin or the trunk, the front and rear axle loads will be distributed unevenly, which will have a negative impact on the handling stability of the vehicle. adverse effects and will take up luggage space. Moreover, most of the existing electric vehicle battery packs are rectangular battery packs, and the shape of the battery pack is relatively fixed, which cannot make full use of the space in the car, which is not conducive to the compact layout design of electric vehicles.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is that the existing electric vehicle battery pack cannot make full use of the interior space of the vehicle and is not conducive to the compact layout design of the electric vehicle, thus proposing a special-shaped electric vehicle battery pack.

In order to solve the problems of the technologies described above, the present invention provides the following technical solutions:

An electric vehicle battery pack, comprising:

A battery pack installation frame, the battery pack installation frame has a structure suitable for the interior space of the electric vehicle;

A plurality of battery units, the plurality of battery units are combined and fixed in the battery pack installation frame;

A distributed battery controller, the distributed battery controller is arranged inside the battery pack installation frame and connected to the battery unit;

The connecting interface is arranged on the outer surface of the battery pack installation frame, and is used for connecting with the electrical connection port of the electric vehicle.

In the electric vehicle battery pack above, the battery unit is a combination of multiple single batteries or a battery module.

In the electric vehicle battery pack mentioned above, the battery unit can be placed horizontally or vertically or at any angle.

In the electric vehicle battery pack described above, a plurality of mounting holes are provided on the outer surface of the battery pack mounting frame for installing the battery pack mounting frame under the floor of the electric vehicle body.

The electric vehicle battery pack above also includes a heat dissipation device, the heat dissipation device is arranged on the inner side of the battery pack installation frame, and is used to cool the plurality of battery units, and the heat dissipation device is a heat dissipation fan or a heat dissipation fin.

In the electric vehicle battery pack described above, the battery units are fixed in the battery pack installation frame, and are combined in different ranks and columns according to the spatial layout of the electric vehicle.

In the electric vehicle battery pack above, the battery unit is detachably installed in the battery pack installation frame.

For the electric vehicle battery pack mentioned above, there are one or more distributed battery controllers.

In the electric vehicle battery pack described above, each battery unit is connected to one of the distributed battery controllers.

The above technical solution of the present invention has the following advantages compared with the prior art:

(1) A battery pack for an electric vehicle according to the present invention, comprising a battery pack mounting frame, having a structure adapted to the interior space of the electric vehicle; a plurality of battery units, which are fixed on the Inside the battery pack installation frame; distributed battery controller, the distributed battery controller is arranged inside the battery pack installation frame, connected with the battery unit; connection interface, the connection interface is arranged on the outer surface of the battery pack installation frame on, used to connect with the electrical connection port of the electric vehicle. Combining battery cells in different ways to form a special-shaped battery pack maximizes the use of the space of the electric vehicle, which is conducive to the compact layout design of the electric vehicle and increases the capacity of the battery pack as much as possible.

(2) A battery pack for an electric vehicle according to the present invention, the outer surface of the battery pack mounting frame is provided with a plurality of mounting holes, so that the battery pack mounting frame can be easily installed under the body floor of the electric vehicle.

(3) A battery pack for an electric vehicle according to the present invention, further comprising a heat dissipation device, the heat dissipation device is arranged on the inner surface of the battery pack mounting frame, and is used to cool the plurality of battery cells, and the heat dissipation device The device is a heat dissipation fan or a heat sink, and is provided with a heat dissipation device, which can control the temperature of the battery pack and prevent danger caused by excessive temperature in the battery pack.

(4) In the electric vehicle battery pack according to the present invention, the battery unit is detachably installed in the battery pack installation frame, so that the electric vehicle battery pack can be installed and disassembled relatively easily.

(5) A battery pack for electric vehicles according to the present invention, each battery unit is connected to one of the distributed battery controllers, and the distributed battery controller is used to control the battery units in a decentralized manner. When a certain battery unit fails , does not affect the use of the entire electric vehicle battery pack.

Description of drawings

In order to make the content of the present invention more easily understood, the present invention will be described in further detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

Fig. 1 is a front view of a battery pack structure of an electric vehicle according to an embodiment of the present invention;

Fig. 2 is a top view of a battery pack structure of an electric vehicle according to an embodiment of the present invention;

Fig. 3 is a left view of an electric vehicle battery pack structure according to an embodiment of the present invention;

Fig. 4 is a front view of a battery pack installation frame according to an embodiment of the present invention;

Fig. 5 is a top view of a battery pack installation frame according to an embodiment of the present invention.

The reference signs in the figure are represented as: 1-battery pack installation frame, 2-the first outer side of the battery pack installation frame, 3-the second outer side of the battery pack installation frame, 4-installation hole, 5-battery unit, 6 -Distributed battery controller, 7-connection interface, 8-heat dissipation device.

detailed description

Example 1

This embodiment provides an electric vehicle battery pack, the front view of the electric vehicle battery pack is shown in Figure 1, the top view of the electric vehicle battery pack structure is shown in Figure 2, and the left view of the electric vehicle battery pack structure is shown As shown in Figure 3, the electric vehicle battery pack includes:

The battery pack installation frame 1, the battery pack installation frame 1 has a structure suitable for the interior space of the electric vehicle, the battery pack installation frame 1 can be set according to the interior space of the electric vehicle, and the height that can be set in a place with a large space One point, it can be set lower in places with small space. The battery pack installation frame 1 in this embodiment has a structure with a high front end and a low rear end. The front view of the battery pack installation frame 1 is shown in Figure 4. A top view of the battery pack mounting frame 1 is shown in FIG. 5 .

The first outer surface 2 and the second outer surface 3 of the battery pack installation frame are provided with a plurality of installation holes 4, the installation holes 4 are evenly arranged at intervals, and the installation holes 4 are fixed by bolts or the like. The battery pack installation frame 1 is installed under the floor of the vehicle body of the electric vehicle. By providing a plurality of installation holes 4 on the outer surface of the battery pack installation frame 1, the battery pack installation frame can be conveniently installed under the body floor of the electric vehicle.

A plurality of battery units 5, the plurality of battery units 5 are combined and fixed in the battery pack installation frame 1, and there is a space for battery units to be arranged in the battery pack installation frame 1, and the assembled electric vehicle battery pack is suitable for Match the shape of the electric vehicle space layout.

According to the spatial layout of the electric vehicle, the battery unit 5 can be placed horizontally or vertically or at any angle.

The battery units 5 are fixed in the battery pack installation frame 1, and are combined in different ranks and columns according to the spatial layout of the electric vehicle.

The battery unit 5 is detachably installed in the battery pack installation frame 1 . The battery unit 5 is installed in the battery pack installation frame 1 through detachable structural parts, so that the electric vehicle battery pack can be installed and disassembled relatively easily.

The battery unit 5 is a combination of multiple single batteries or a battery module.

A distributed battery controller 6 , the distributed battery controller 6 is arranged inside the battery pack installation frame 1 and connected to the battery unit 5 .

There are one or more distributed battery controllers 6 .

Each battery unit 5 is connected to one of the distributed battery controllers 6, and the distributed battery controller 6 is used to perform decentralized control on the battery units 5. When a certain battery unit 5 fails, it does not affect the use of the entire electric vehicle battery pack. .

The connection interface 7 is arranged on the outer surface of the battery pack installation frame 1 and is used for connecting with an external electric vehicle power connection port.

The heat dissipation device 8 is arranged on the inner surface of the battery pack installation frame 1 for cooling the plurality of battery units 5 , and the heat dissipation device 8 is a heat dissipation fan or a heat dissipation fin. Equipped with a heat dissipation device, which can control the temperature of the battery pack and prevent the danger caused by excessive temperature in the battery pack

An electric vehicle battery pack provided in this embodiment includes a battery pack installation frame having a structure suitable for the interior space of the electric vehicle; Inside the frame; a distributed battery controller, the distributed battery controller is arranged inside the battery pack installation frame and connected to the battery unit; a connection interface, the connection interface is arranged on the outer surface of the battery pack installation frame, used It is used to connect with the electrical connection port of the electric vehicle. Combining battery cells in different ways to form a special-shaped battery pack maximizes the use of the space of the electric vehicle, which is conducive to the compact layout design of the electric vehicle and increases the capacity of the battery pack as much as possible.

Example 2

This embodiment provides an electric vehicle battery pack, which is composed of independent distributed battery units, a battery pack installation frame, a distributed battery controller and a connection interface.

A battery pack is composed of multiple battery units, and multiple distributed battery units are connected to one or more distributed battery controllers.

The horizontal and vertical placement of batteries in each battery unit has different layers and combinations.

Depending on the battery installation space of the electric vehicle, the space of the electric vehicle can be fully utilized through the combination of multiple battery cells. After the battery cells are combined, they are fixed on the battery pack installation frame and connected to the distributed battery controller to form a complete special-shaped electric vehicle battery pack. Through the installation holes on the installation frame, the battery pack can be easily installed on the electric vehicle.

Independent distributed battery units can be arranged according to the space of the electric vehicle. Not only can the combination of rows and columns be carried out, but also the battery can be arranged vertically and horizontally, which can add more layout methods and make full use of the layout space.

This embodiment provides a deformable electric vehicle battery pack, which can solve the contradiction between the capacity and volume of the battery pack and the irregular and limited layout space, as well as the contradiction between the shape of the battery pack and the modification of the vehicle body. The special-shaped electric vehicle battery pack is arranged on the frame and under the body floor. The battery pack can be shaped according to the shape of the vehicle body floor, so that the electric vehicle can be powered by the special shape of the battery pack without changing the body design as much as possible. Arrange a larger capacity battery. The battery pack is composed of independent distributed battery pack subunits. Based on the battery space that different electric vehicles can provide, the battery pack subunits are combined in different ways to form a special-shaped electric vehicle battery pack to maximize the use of the existing space. The difference from the currently commonly used electric vehicle battery packs is that through different combinations of independent distributed battery subunits, the battery subunits can not only change the shape of the battery pack through the thickness, width, and height of the stack, but also can be placed horizontally or vertically. To increase the diversity to adapt to a variety of electric vehicles, while simplifying the vehicle design to a certain extent.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (9)

1. a batteries of electric automobile bag, it is characterised in that including:

Battery bag installing frame, described battery bag installing frame has the structure suitable with electric automobile inner space；

Multiple battery units, are fixed in described battery bag installing frame after the combination of the plurality of battery unit；

Distributed electrical pool controller, described distributed electrical pool controller is arranged on inside battery bag installing frame, is connected with described battery unit；

Connecting interface, described connection interface is arranged on the lateral surface of battery bag installing frame, for being connected with electric automobile power connection end mouth.

2. batteries of electric automobile bag according to claim 1, it is characterised in that:

Described battery unit is combination or the battery module of multiple cell.

3. batteries of electric automobile bag according to claim 1 and 2, it is characterised in that:

Described battery unit can horizontal positioned or vertically place or with arbitrarily angled placement.

4. the batteries of electric automobile bag according to claim 1 or 2 or 3, it is characterised in that:

The lateral surface of described battery bag installing frame is provided with multiple installing hole, for being arranged on by described battery bag installing frame under the body platform of electric automobile.

5. batteries of electric automobile bag according to claim 1, it is characterised in that also include:

Heat abstractor, described heat abstractor is arranged on the medial surface of battery bag installing frame, and for the plurality of battery unit is cooled down, described heat abstractor is radiator fan or fin.

6. batteries of electric automobile bag according to claim 1, it is characterised in that:

Described battery unit is fixed in battery bag installing frame, according to electric automobile space layout, carries out different ranks combinations.

7. batteries of electric automobile bag according to claim 6, it is characterised in that:

Described battery unit is removably mounted in battery bag installing frame.

8. the batteries of electric automobile bag according to claim 6 or 7, it is characterised in that:

Described distributed electrical pool controller is one or more.

9. batteries of electric automobile bag according to claim 1, it is characterised in that:

Each battery unit connects a described distributed electrical pool controller.