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Battery modules and packs

A battery module and cell technology, applied in battery pack components, batteries, secondary batteries, etc., can solve the problems of low safety, fire and combustion, low energy density, etc., to reduce support structures and improve safety. Effect

Active Publication Date: 2021-09-24
SVOLT ENERGY TECHNOLOGY CO LTD
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Problems solved by technology

Some battery systems have higher thermal stability of the positive electrode, such as LFP (English: LiFePO 4 , Chinese: lithium iron phosphate), so this kind of battery system is not easy to catch fire, but this kind of battery system has low energy density and weak battery life
Some battery systems have higher energy density and stronger battery life, but the thermal stability of the positive electrode of these battery systems is low, such as NMC (English: Li(Ni x mn y co z )O 2 , Chinese: Lithium Nickel Cobalt Manganese Oxide), which is prone to fire and combustion, and when one cell catches fire, it will quickly spread to other cells in the battery module, resulting in lower safety

Method used

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  • Battery modules and packs
  • Battery modules and packs
  • Battery modules and packs

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Embodiment Construction

[0044] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0045] figure 1 is a schematic diagram of a battery module 100 shown according to an exemplary embodiment, as shown in figure 1 As shown, the battery module includes: a first number of first cells and a second number of second cells, and the thermal stability of the first cells is higher than that of the second cells.

[0046] The first number of first cells and the second number of ...

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Abstract

The present disclosure relates to a battery module and a battery pack, relating to the field of power batteries. The battery module includes: a first number of first batteries and a second number of second batteries, and the thermal stability of the first batteries is higher than that of Thermal stability of the second cell. The first number of first cells and the second number of second cells are connected in series according to a preset sequence, and the sequence is used to indicate the position of each first cell and each second cell in the battery module. order. The first number of first cells and the second number of second cells connected in series are laid out according to a preset arrangement structure, and the arrangement structure is used to indicate that each first cell and each second cell position in the battery pack. In the present disclosure, the first battery cell and the second battery cell are connected in series according to a preset arrangement order, and are laid out according to a preset arrangement structure, so that the first battery cell with high thermal stability can play the role of thermal barrier , improving the safety of the battery module.

Description

technical field [0001] The present disclosure relates to the field of power batteries, and in particular, to a battery module and a battery pack. Background technique [0002] In recent years, with the continuous promotion and popularization of electric vehicles, battery safety has attracted more and more attention. For batteries with different cathode systems, due to the different thermal stability of the cathode materials, the overall safety of the batteries is also different. Some battery systems have higher thermal stability of the positive electrode, such as LFP (English: LiFePO 4 , Chinese: lithium iron phosphate), so this kind of battery system is not easy to catch fire, but this kind of battery system has low energy density and weak battery life. Some battery systems have higher energy density and stronger battery life, but the thermal stability of the positive electrode of these battery systems is low, such as NMC (English: Li(Ni x mn y co z )O 2 , Chinese: Li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/658H01M50/51H01M50/258H01M50/249
CPCH01M10/4207H01M10/658H01M2220/20Y02E60/10
Inventor 李东江李俭盛杰
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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