A PWM-based constant-current constant-voltage heating pad control circuit
By using a PWM-based constant current and constant voltage heating pad control circuit, dynamic adjustment of the heating pad current and constant current and constant voltage output are achieved, solving the problems of inability to dynamically adjust temperature and lack of protection in existing heating methods, and improving the efficiency and safety of battery heating.
CN224418955UActive Publication Date: 2026-06-26SHANGHAI PYTES ENERGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI PYTES ENERGY CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-26
Smart Images
Figure CN224418955U_ABST
Abstract
The utility model relates to lithium cell technical field, concretely is a kind of constant-current constant-voltage heating pad control circuit based on PWM. Including asynchronous buck circuit, gate drive circuit, voltage control drive circuit, PWM control circuit, MCU chip, the LCSG_DriveA0 port of asynchronous buck circuit, LCSG_DriveB0 port are sequentially connected the LCSG_DriveA0 port of gate drive circuit, LCSG_DriveB0 port, the VSamp port of asynchronous buck circuit is connected the VSamp port of PWM control circuit, the CON_PWM port of gate drive circuit is connected the CON_PWM port of PWM control circuit, the REF_PWM port of voltage control drive circuit is connected the VRef port of PWM control circuit, the one PE pin of MCU chip is connected the HEAT_OFF port of gate drive circuit, another PE pin of MCU chip is connected the CL_PWM port of voltage control drive circuit. Compared with prior art, realize the dynamic regulation of heating pad current, ensure that constant-current constant-voltage output is to heating pad both ends, improve energy conversion efficiency.
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