Lithium battery low-temperature charging and battery replacing system
A battery system, lithium battery technology, applied in battery load switching, battery circuit devices, charging stations, etc., can solve problems such as inability to meet heating needs, excessive impact on life, battery life, performance damage, etc.
Active Publication Date: 2021-11-23
北京链宇科技有限责任公司
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Problems solved by technology
If the heating rate is too low, it will limit the application scenarios and even fail to meet the heating requirements; if the impact on the life is too large, it will cause the battery to age prematurely, which will bring safety risks; if there is a large inhomogeneity in temperature changes, it will damage the battery. damage to the life and performance of the
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[0044] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0045] A lithium battery low-temperature charging and changing system, such as figure 1 As shown, including control system, charging and discharging system, battery system and heating system, among them,
[0046] The control system is connected to the charging and discharging system, and provides a control strategy for the charging and discharging line system;
[0047] The charging and discharging system is connected to th...
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The invention discloses a lithium battery low-temperature charging and battery replacing system which comprises a battery external heating system and a battery bidirectional pulse charging and discharging system. The bidirectional charging and discharging system can be used for charging, pulse heating or pulse charging of the battery system. And energy supply, low-temperature heating and low-temperature charging of the battery system are realized. The battery external heating system comprises a heating plate, a heat source, other heating auxiliary parts, a control system and the like, is located outside the battery system and heats the battery through heat conduction. According to the scheme, low-temperature rapid heating and rapid charging are carried out on the battery module and the battery pack placed in the battery charging and replacing system, it is guaranteed that the battery system achieves rapid temperature rise and good temperature consistency in the low-temperature environment, and rapid charging in the low-temperature environment is finally achieved. Compared with a conventional system, more electric quantity can be charged more quickly at low temperature, and meanwhile, the lithium precipitation risk and the capacity attenuation of low-temperature charging are reduced.
Description
technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a low-temperature charging and replacing system for lithium batteries. Background technique [0002] As a key component of new energy power systems and energy storage systems, lithium-ion batteries have more and more extensive application scenarios and great development potential. At present, the application of lithium-ion batteries in low-temperature scenarios still faces huge challenges. The low temperature environment will reduce the available capacity of the battery, and will cause greater energy loss during charging and discharging, and will also lead to the attenuation of battery life throughout the life cycle; on the other hand, the internal resistance of the battery increases at low temperature, and low temperature charging will occur earlier When the cut-off voltage is reached, the rechargeable capacity will be greatly reduced, and the risk of lithium dendrite...
Claims
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Login to View More IPC IPC(8): H02J7/00H01M10/615B60L53/80
CPCH02J7/007194H01M10/615H02J7/0068B60L53/80Y02T10/7072Y02T10/72
Inventor 曹晟阁
Owner 北京链宇科技有限责任公司