[1]
Technical Field
[2]
The utility model relates to the battery field, in particular to a battery housing, the battery cover and containing the battery housing or the battery cover of the battery.
[3]
Background Art
[4]
Lithium ion battery not only can be used as the power source of the various portable equipment, also can be used as a hybrid vehicle and pure electric vehicle of one of the core parts, the safety performance of automobile manufacturers increasingly to the attention and battery plant family.
[5]
The battery in the course of using inevitable will produce heat energy, this heat energy if not playing in a timely manner, not only may reduce the service life of the battery, and can even cause serious when the battery explosion. The application of the special for the ternary cell, because the ternary material in 200 °C will decompose, cause thermal runaway, which is the fatal weakness of the ternary cell, therefore, the battery can be rapid heat dissipation, heat is not gather is the basic means of thermal runaway. The prior is provided with a battery module or battery pack to water-cooled or air-cooled programmes, but its still depends on the battery internal heat of the propagation velocity.
[6]
Content of the utility model
[7]
In order to solve the above technical problem, the utility model provides a can be better suitable for lithium ion battery but also can prevent the battery internal heat aggregated can improve the cell circulation and safety performance of the battery housing, the battery cover and the battery.
[8]
The inventor of the study found that the utility model, the existing technology and not to take into account the heat dissipation of the battery shell, the traditional single battery housing — aluminum shell has been mass to this day, improved scheme according to the actual need also only limited to the inner surface of the housing or the outer surface of the insulating layer, such as the corrosion-resistant layer. But the prior three-cell mass use, need to look again at the single battery in the shell, such as the heat dissipation efficiency is not high, a direct impact on the internal temperature of the battery, the battery internal heat cannot be quickly dispersed, influence the battery cycle life; when the battery is abnormal, battery internal heat cannot be quickly dispersed, so that the battery temperature continues to rise, until the battery thermal runaway point, thus resulting in a potential safety hazard. The monomer of the battery shell need to heat dissipation re-definition, whereas conventional on the shell is provided with a radiation part, occupied space, will certainly affect the power battery system capacity density. The utility model to break through the traditional thinking, the complex environment from the interior of the cell and heat dissipation considerations, the following technical scheme:
[9]
1St of the utility model is to provide a battery housing, which comprises an aluminum shell or aluminum alloy shell and the aluminum or aluminum alloy housing located at the outer surface of the copper or copper alloy of the shell of the housing.
[10]
2Nd of the utility model is to provide a battery cover, which comprises an aluminum cover plate or an aluminum alloy cover plate and aluminum cover plate or an aluminum alloy cover plate located on the outer surface of the cover plate or the cover plate of the copper alloy.
[11]
3Rd of the utility model is to provide a kind of battery, includes having open end shell, and the shell encloses the cover plate, and the housing and the cover plate formed in the holding space of the pole core; wherein the shell is made of the above-mentioned battery housing and/or the cover plate for the above-mentioned battery cover plate.
[12]
Preferably, the shell is of the aluminum or aluminum alloy housing, the cover plate is the battery cover plate, the opening of the housing is provided with a mounting step, the aluminum cover plate or an aluminum alloy cover plate on the step of the lap joint in the mounting, the mounting step is overlapped on the cover plate or [...] aluminum alloy cover plate not covered by the outer surface of the copper or copper alloy and the cover plate and the cover plate.
[13]
Preferably, the shell is of the aluminum or aluminum alloy housing, the cover plate is the battery cover plate, the aluminum cover plate or aluminum alloy cover plate arranged at the end of the mounting groove, the opening of the housing a seal mounting groove, and the aluminum cover plate or an aluminum alloy cover plate is covered with the outer surface of the copper or copper alloy and the cover plate and the cover plate.
[14]
Preferably, the housing for the above-mentioned battery housing, the cover plate is aluminum or an aluminum alloy cover plate and the cover plate, the opening of the aluminum or aluminum alloy of the shell is provided with a mounting step, the aluminum plate or aluminum alloy plate is lapped on the mounting on the step, and the aluminum shell or the outer surface of the aluminum alloy housing are both covered with a copper shell or copper alloy shell.
[15]
Preferably, the housing for the above-mentioned battery housing, the cover plate is aluminum or an aluminum alloy cover plate and the cover plate, the aluminum cover plate or aluminum alloy cover plate arranged at the end of the mounting groove, the opening of the aluminum or aluminum alloy housing of a seal mounting groove.
[16]
Preferably, the aluminum or aluminum alloy outer surface of the shell is provided with a groove, said copper shell or copper alloy shell is positioned in the recess of the aluminum or aluminum alloy is pasted on the outer surface of the shell.
[17]
According to the battery of the utility model, the inner and outer layers of the composite shell of the battery or battery cover plate, the inner layer to meet the requirements of the electrochemical system, to prevent corrosion, in the whole of the battery in the life cycle of the reliable use of; the outer layer is of high thermal conductivity, high strength, improved battery heat conduction capability, while improving the strength of the battery, the battery can be abnormal heat generated, the battery temperature control in the heat out of control spot the following, can avoid the potential safety hazard of the battery, to achieve the real security.
[18]
Description of drawings
[19]
Figure 1 is the battery structure diagram of a provided in the embodiment of the present utility model.
[20]
Figure 2 is the battery structure diagram of another embodiment of the present utility model.
[21]
Figure 3 is the battery structure diagram of another embodiment of the present utility model.
[22]
Figure 4 is the battery structure diagram of another embodiment of the present utility model.
[23]
Wherein
[24]
The battery cover 1; aluminum cover plate 11; copper cover plate 12;
[25]
The battery housing 2; aluminum shell 21; copper shell 2…