Battery pack and vehicle comprising battery pack

A battery pack and battery module technology, which is applied in the field of vehicles and battery packs, can solve problems such as large heat loss, achieve the effect of increasing the temperature of the battery core, reducing the consumption of battery power, and strengthening the structural strength

Pending Publication Date: 2021-03-30
NIO TECH ANHUI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve at least one of the above-mentioned problems in the prior art, that is, in order to solve the problem of large heat loss of the existing power battery in a low-temperature environment, the present invention provides a battery pack, which includes: a frame, inside the frame An installation position is formed; a battery module, the battery module is installed in the installation position, and the battery module includes several battery cells; a side beam, the side beam is connected to the outer wall of the frame, and said side sills are made of a first insulating material

Method used

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  • Battery pack and vehicle comprising battery pack
  • Battery pack and vehicle comprising battery pack
  • Battery pack and vehicle comprising battery pack

Examples

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Embodiment 1

[0073] First refer to figure 1 , to describe the first embodiment of the battery pack of the present invention. in, figure 1 It is an exploded view of the battery pack of the present invention.

[0074] like figure 1 As shown, in order to solve the problem of large heat loss of the existing power battery in a low temperature environment, the present invention provides a battery pack, which includes a frame 1 , several battery modules 2 and two side beams 3 . Several installation positions 13 are formed in the frame 1 , and each battery module 2 is installed in one installation position 13 . Each battery module 2 comprises a plurality of electric cores 21 (see Image 6 ), a plurality of batteries 21 are connected in series and / or in parallel. Two side beams 3 are respectively connected to two outer sidewalls of the frame 1, and the side beams 3 are made of a first heat insulating material.

[0075] The above arrangement can reduce the natural convection heat transfer coef...

Embodiment 2

[0090] see below Figure 7 , briefly introduce the second embodiment of the present invention. in, Figure 7 It is a sectional view of the second embodiment of the outer frame of the present invention.

[0091] like Figure 7 As shown, on the premise that the other setting methods of Embodiment 1 remain unchanged, the frame 1 is set as follows: the frame 1 is set as a hollow structure to form a cavity 17, and the cavity 17 is filled with the phase change material 6. The frame 1 can be a casting or a profile, and a closed or semi-closed cavity 17 is reserved inside it as a space for filling the phase change material 6 . Phase change material 6 can use inorganic phase change material (such as crystalline hydrated salt, molten salt, metal alloy, etc.), organic phase change material (such as paraffin, carboxylic acid, ester, polyhydric alcohol, etc.) or composite phase change material (such as organic phase change material) mixture of phase change materials and inorganic phase...

Embodiment 3

[0104] The present invention also provides a vehicle, on which the battery pack described in Embodiment 1 or 2 above is installed. Wherein, the vehicle is preferably a pure electric vehicle, and the battery pack is fixedly connected to the chassis of the vehicle.

[0105]By installing the above-mentioned battery pack on the vehicle, when the vehicle is left standing in a cold environment, the battery pack can keep warm for a long enough time without consuming its own power, so as to ensure the performance of the battery pack after being placed outdoors for a long time Not affected. After repeated tests, observations, analyzes and comparisons by the inventor, when the electric vehicle equipped with the battery pack of the present application is placed in a cold environment, the battery can keep warm for a long enough time (one night) without consuming its own power. , to ensure that the performance of the car (endurance / acceleration / maximum speed, etc.) will not be affected af...

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Abstract

The invention relates to the technical field of power batteries, in particular to a battery pack and a vehicle comprising the battery pack. The invention aims to solve the problem of large heat loss of the existing power battery in a low-temperature environment, so that the battery pack of the present invention comprises a frame in which a mounting position is formed; a battery module which is mounted in the mounting position, and comprises a plurality of battery cells; and a side beam which is connected to the outer side wall of the frame, and is made of a first thermal insulation material. According to the arrangement mode, the natural convection heat transfer coefficient between the side wall of the frame and the environment can be reduced, the heat flux is reduced, and thus the temperature loss of the battery cell is reduced.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a battery pack and a vehicle including the battery pack. Background technique [0002] With the increasing market share of new energy vehicles, especially pure electric vehicles, the use of pure electric vehicles in the cold northern environment is becoming more and more common. When the vehicle is left standing for a long time in a cold environment, the power battery is the core component of the electric vehicle. Whether the internal cell temperature can be maintained in a relatively ideal temperature range will directly affect the chemical activity and life of the power battery. [0003] Usually, in order to ensure the overall structural strength of the power battery, the outer casing of the power battery is made of metal materials, but in this way, in a low temperature environment, it is easier for the metal material to exchange heat with the external environment, resu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/204H01M50/249H01M50/242H01M10/615H01M10/617H01M10/625H01M10/6552H01M10/657H01M10/658
CPCH01M10/615H01M10/617H01M10/625H01M10/6552H01M10/657H01M10/658H01M10/635H01M10/659H01M50/224H01M50/227H01M50/249H01M50/258H01M50/278H01M2220/20H01M10/653H01M10/6556H01M10/6572H01M50/209H01M50/242
Inventor 王贤鹏姜亚平李峰王林峰朱立德方杰曾士哲
Owner NIO TECH ANHUI CO LTD
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