Heating method and heating device of battery system
A battery system and heating method technology, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as poor customer driving experience, prolonged charging time, battery damage, etc., to reduce energy consumption, prolong life, and save energy. Effect
Active Publication Date: 2021-01-05
HUBEI JINQUAN NEW MATERIALS CO LTD
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Problems solved by technology
[0002] In the prior art, when the battery system uses resistance wire heating sheets for heating, most of them directly use the constant maximum power heating method to continuously heat the battery. This heating method has the following disadvantages: continuous heating has the problem of excessive temperature difference during the heating process Generally, after heating, enter the charging mode or driving mode. If the temperature difference in the charging mode is too large, the current will be limited and the charging time will be extended.
If you enter the driving, the power will be limited when the temperature difference is too large, resulting in poor driving experience for customers; continuous maximum power heating will cause serious heat loss due to excessive temperature difference; irreversible damage to the battery, there is a risk of thermal runaway
Method used
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[0022] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a s...
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The invention discloses a heating method and a heating device of a battery system, and relates to the technical field of batteries. The heating method of the battery system comprises the following steps: acquiring the temperature of a heating assembly in the battery system in real time; comparing the real-time temperature of the heating assembly with a set target temperature, and respectively controlling the heating power of the heating assemblies at different positions according to different comparison results; until the lowest temperature of the battery in the battery system reaches the temperature during normal operation, enabling the heating assembly to stop heating. By comparing the real-time temperature of the heating assembly with the set target temperature, the temperatures of thebatteries at different positions in the battery system are accurately controlled, so that the temperature in the battery system rises in a balanced manner, the temperature difference is reduced, unnecessary heat loss is prevented, and energy is saved. Meanwhile, the temperature of the heating assembly is controlled within the set target temperature, so that the heating temperature is prevented from being higher than the highest temperature which can be borne by the battery, and thermal runaway is prevented.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to a heating method and a heating device for a battery system. Background technique [0002] In the prior art, when the battery system uses resistance wire heating sheets for heating, most of them directly use the constant maximum power heating method to continuously heat the battery. This heating method has the following disadvantages: continuous heating has the problem of excessive temperature difference during the heating process , generally enter the charging mode or driving mode after heating, if the temperature difference in the charging mode is too large, the current will be limited and the charging time will be prolonged. If you enter the driving, the power will be limited when the temperature difference is too large, resulting in poor driving experience for customers; continuous maximum power heating will cause serious heat loss due to excessive temperature difference; T...
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IPC IPC(8): H01M10/615H01M10/625H01M10/635H01M10/6571
CPCH01M10/615H01M10/625H01M10/635H01M10/6571Y02E60/10
Inventor 闫仕伟阎明瀚徐宇虹江吉兵
Owner HUBEI JINQUAN NEW MATERIALS CO LTD