Battery thermal management system and control method thereof

A technology of battery thermal management and control method, which is applied in the field of battery thermal management system and its control, which can solve problems such as inability to cope with rapid temperature changes and battery stack damage, and achieve the effects of reducing energy consumption, improving reliability, and increasing heating speed
CN110190296AActive Publication Date: 2019-08-30苏州纳尔森能源科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
苏州纳尔森能源科技有限公司
Publication Date
2019-08-30

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Abstract

The invention discloses a battery thermal management system and a control method thereof. The system comprises a medium-temperature heat storage unit, a first high-temperature heat storage unit and atwo-phase circulation unit, wherein the medium-temperature heat storage unit stores the heat generated by a battery stack by using a first heat storage material and transmits the stored heat to the battery stack when the environmental temperature is detected to be lower than a first preset temperature; the first high-temperature heat storage unit is connected with the medium-temperature heat storage unit and stores the heat generated by the battery stack by using a second heat storage material; and the two-phase circulation unit is connected with the medium-temperature heat storage unit and the first high-temperature heat storage unit and transmits the heat stored by the first high-temperature heat storage unit to the medium-temperature heat storage unit when the temperature in a medium-temperature heat storage device of the medium-temperature heat storage unit is lower than the phase change temperature of the first heat storage material. The battery thermal management system solves atechnical problem that the battery management system in the related art cannot cope with the rapid change of temperature and results in the damage of the battery stack.
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Description

technical field

[0001] The present invention relates to the technical field of power control, in particular to a battery thermal management system and a control method thereof. Background technique

[0002] In related technologies, when realizing heat conversion, it is often necessary to use air-cooled heat exchangers or cooling fans for temperature regulation. figure 1 is a schematic diagram of an optional fuel cell engine system in the prior art, such as figure 1 As shown, the fuel cell system includes: a fuel cell stack 101 (the core component of the engine, a place for converting chemical energy and electric energy), a hydrogen supply subsystem, which supplies the fuel required for the fuel cell reaction, and the main components include: a high-pressure hydrogen cylinder 108, a primary Pressure reducing valve 109, secondary pressure reducing valve 110, hydrogen circulation pump 111, hydrogen purge valve 112, pressure sensor P1, pressure sensor P3, temperature sensor T1;...

Claims

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