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Heating control method and heating control device

A heating control and heating loop technology, applied in electric heating devices, measuring devices, instruments, etc., can solve the problem of low control accuracy, and achieve the effect of high control accuracy and rapid heating

Active Publication Date: 2020-03-10
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the inventors of the present application found that in the prior art, the IGBT is mainly controlled by the internal resistance of the power battery pack, and the heating current in the heating circuit can only be adjusted indirectly, and the control accuracy is low.

Method used

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  • Heating control method and heating control device
  • Heating control method and heating control device
  • Heating control method and heating control device

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Embodiment Construction

[0031] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention.

[0032] The embodiment of the present invention provides a heating control method and a heating control device, which are used to control the current in the heating circuit of the power battery pack, have high control accuracy, and can complete rapid heating of the battery under the premise of safety and reliability .

[0033] In terms of scale, the power battery pack consists of at least two battery cells connected in series and / or in parallel. The batteries in the embodiments of the present invention may be lithium-ion batteries, lithium metal batteries, lead-acid batteries, nickel-batteries, nickel-metal hydride batteries, lithium-sulfur batteries, lithium-air batteries or sodium-ion batteries, which are not limit...

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PUM

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Abstract

The invention discloses a heating control method and a heating control device. The heating control method includes obtaining the average current value in the heating circuit of the power battery pack; according to the average current value of the nth cycle, the average current value of the n-1th cycle, the average current value of the n-2th cycle and The current setting value is obtained to obtain the current output value required for the nth cycle, n is greater than or equal to 3; according to the pre-calibrated PWM control parameters corresponding to the current output value, the PWM signal is output to the switching device of the heating circuit, so that the heating circuit The difference between the actual current value and the current set value is less than a preset threshold. Adopting the method in the embodiment of the present invention can improve the control accuracy of the current in the heating circuit of the battery pack.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a heating control method and a heating control device. Background technique [0002] When the temperature of the power battery pack is lower than the lower limit of the allowable operating temperature range, the power battery pack cannot work and needs to be heated to within the allowable operating temperature range before the power battery pack can resume work. [0003] At present, the heating scheme of the power battery pack is: control the switching device to short-circuit the power battery instantaneously to form a heating circuit, and the large current generated by the instantaneous short-circuit flows through the internal resistance of the power battery to generate heat, thereby heating the power battery. This solution has the advantages of fast heating speed and uniform heating. A commonly used switching device includes an insulated gate bipolar transistor (Insulated Ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/615H01M10/633H01M10/651
CPCH01M10/615H01M10/633H01M10/651H05B1/023Y02E60/10H01M10/6571G01R31/382G01R19/16528H01M10/425H01M2010/4271
Inventor 但志敏路文斌张伟侯贻真余腾左希阳吴兴远朱涛声
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY