CN218505644U

CN218505644U - Collision protection device for new energy vehicle power battery pack

Info

Publication number: CN218505644U
Application number: CN202222868960.2U
Authority: CN
Inventors: 王芸
Original assignee: Anhui Normal University
Current assignee: Anhui Normal University
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-02-21
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a collision protector for new energy vehicle power battery package belongs to new energy vehicle technical field. The collision protection device comprises a honeycomb buffer plate, an outer covering piece, a first structural adhesive and a second structural adhesive; the collision protection devices are two and are symmetrically arranged on the vehicle body between the front auxiliary frame and the new energy vehicle power battery pack; the utility model discloses structural design is simple, the collision load of sub vehicle frame before effectively buffering to absorb partial collision energy, thereby fine protection power battery package has avoided power battery package to take place the risk of thermal runaway because of the collision, has better economic benefits.

Description

Collision protection device for new energy vehicle power battery pack

Technical Field

The utility model relates to a new forms of energy vehicle technical field especially relates to protector of new forms of energy car power battery package.

Background

Along with the gradual upgrade of domestic automobile consumption and the continuous improvement of energy-saving and environment-friendly requirements, the research and development of new energy vehicles are greatly supported by national policies, and the research and development strength of new energy vehicles is gradually increased by automobile host factories; in real life, a large number of traffic accidents occur every year, so that not only are a large number of injuries and deaths of vehicle passengers and pedestrians caused, but also a large number of property losses and a large amount of investment in public resources are caused; because of the special structure of the battery, if the power battery of the new energy vehicle is violently collided in collision, the risk of thermal runaway of the power battery can be caused, and further explosion can be caused to endanger the life safety of drivers and passengers; the collision protection device for the power battery is particularly important.

In designing and developing a vehicle structure, one of design principles for a frontal collision is: when the front collision load is transmitted to the rear mounting bolt of the front subframe and reaches a certain design load, the mounting bolt is broken or fails in a certain form, and the purpose is to guide the power assembly or the front motor to move backwards and downwards so as to prevent the power or the front motor from impacting a front baffle or a firewall, and the impacted firewall can cause excessive collision deceleration and human leg injury; the conventional fuel vehicle has no power battery, so that other problems can not be caused due to the fact that the front auxiliary frame falls off due to the mounting bolt; the power battery of the new energy vehicle is arranged behind the front auxiliary frame, and if the power battery is violently collided by the front auxiliary frame, the risk of thermal runaway can occur, and the design of the protective device becomes the inevitable choice.

In a 2025 version C-NCAP (computer-network-computer aided processing) roadmap issued by the China automobile technical center, the front collision speed is increased, the protection strength of drivers and passengers at higher collision speed is increased, and the protection difficulty of a power battery is also increased; aiming at the problems, a set of collision protection device is designed between the rear end of the front auxiliary frame and the power battery to buffer the direct impact of the front auxiliary frame on the power battery pack, so that the risk of thermal runaway of the power battery due to violent collision is avoided.

Disclosure of Invention

The patent of the utility model discloses a new forms of energy vehicle power battery package protector to solve power battery and take place the risk of thermal runaway because of the collision.

In order to realize the purpose, the utility model discloses a technical scheme be:

a new energy vehicle power battery package protector includes honeycomb buffer board, outer covering, first structure glue, second structure glue.

The honeycomb buffer plate of the collision protection device is made of honeycomb aluminum.

The outer covering piece of the collision protection device wraps the honeycomb buffer plate, and the outer covering piece is connected with the vehicle body through a welding spot.

The first structural adhesive of the collision protection device is used for overlapping the honeycomb buffer plate with the vehicle body, and the second structural adhesive is used for overlapping the honeycomb buffer plate with the outer covering part.

The collision protection device comprises two collision protection devices, namely a first collision protection device and a second collision protection device, wherein the first collision protection device and the second collision protection device are respectively arranged on the vehicle body between the front auxiliary frame and the power battery pack in a bilateral symmetry mode.

The utility model has the advantages that: the utility model discloses middle collision protector, structural design is simple, under the unchangeable condition of front collision design principle, namely under the unchangeable condition of vehicle major structure, effectively cushions the collision load of front sub vehicle frame, absorbs some collision energy to fine protection power battery package; the working condition of the power battery under high-speed collision is protected more strictly, casualties and other economic losses caused by thermal runaway of the power battery are greatly improved, and economic benefits and social benefits are remarkable.

Drawings

The contents of the various figures of the specification and the labels in the figures are briefly described as follows:

fig. 1 is the installation schematic diagram of the collision protection device of the present invention.

Figure 2 is the utility model discloses collision protection device installation cross-sectional view.

Fig. 3 is a schematic structural view of the collision protection device of the present invention.

Fig. 4 is the schematic view of the internal structure of the collision protection device of the present invention.

Fig. 5 is a left side view of the front structure of the vehicle of the present invention.

Fig. 6 is a bottom view of the front structure of the vehicle according to the present invention.

The labels in the above figures are:

10. a first collision protection device; 101. a honeycomb buffer plate; 102. an outer cover; 103. a first structural adhesive; 104. a second structural adhesive; 20. a second collision protection device; 30. A vehicle body; 40. welding points; 50. a front impact beam; 60. an energy absorption box; 70. a front longitudinal beam; 80. a front subframe; 90. a secondary crash box; 100. a secondary front impact beam; 110. a first bolt; 120. a second bolt; 130. a third bolt; 140. a fourth bolt; 150. and a power battery pack.

Detailed Description

The following description of the preferred embodiments of the present invention will be made in further detail with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

As shown in fig. 1, 2, 3 and 4, a new energy vehicle power battery protection device includes a honeycomb aluminum buffer plate 101, an outer cover 102, a first structural adhesive 103, a second structural adhesive 104; the honeycomb buffer plate 101 is made of honeycomb aluminum; the outer cover 102 wraps the honeycomb cushion panel 101, and the outer cover 102 is connected to the vehicle body 30 by the welding spots 40; the first structural adhesive 103 overlaps the honeycomb cushion panel 101 with the vehicle body 30, and the second structural adhesive 104 overlaps the honeycomb cushion panel 101 with the outer cover 102; the collision prevention devices are two, 10 and 20, and are bilaterally symmetrically mounted on the vehicle body 30 between the front subframe 80 and the power battery pack 150.

As shown in fig. 5, in a front collision of the vehicle, there are mainly two paths for transmitting collision load, one is the upper front impact beam 50, the energy absorption box 60 and the front side member 70, and the other is the lower sub front impact beam 100, the sub energy absorption box 90 and the front sub frame 80; when a vehicle undergoes a frontal collision, the collision load is transmitted rearward through both the upper and lower load paths.

As shown in fig. 6, the front subframe 80 is connected to the vehicle body 30 by a first bolt 110, a second bolt 120, a third bolt 130, and a fourth bolt 140; when a front part collision occurs, the third bolt 130 and the fourth bolt 140 are installed behind the front sub-frame and fall off through the lower load transmission path, the fallen front sub-frame 80 moves backwards and impacts the

collision buffer devices

10 and 20, the collision buffer devices buffer the impact speed of the front sub-frame 80, and the collision strength between the front sub-frame 80 and the power battery 150 is reduced; the risk of thermal runaway of the power battery protected by the collision protection device is greatly reduced.

Obviously the utility model discloses the concrete realization does not receive the restriction of above-mentioned mode, as long as adopted the utility model discloses a method design and technical scheme carry out various insubstantial improvements, all are within the scope of protection of the utility model.

Claims

1. The utility model provides a collision protector for new forms of energy vehicle power battery package which characterized in that, includes honeycomb buffer board, outer covering, first structure glue, second structure glue.

2. The crash shield apparatus as recited in claim 1, wherein the honeycomb bumper plate is formed of honeycomb aluminum.

3. The crash protection device according to claim 1, wherein the outer cover is wrapped around the honeycomb bumper, and the outer cover is attached to the vehicle body by a weld.

4. The crash shield apparatus as recited in claim 1, wherein the first structural adhesive overlaps the cellular cushioning sheet with the vehicle body and the second structural adhesive overlaps the cellular cushioning sheet with the outer cover.

5. The crash protection device according to claim 1, wherein there are two of said crash protection devices, a first crash protection device and a second crash protection device, and said first crash protection device and said second crash protection device are mounted on the vehicle body between the front sub frame and the power battery pack in bilateral symmetry.