Battery Charging Control With Preheating for Low-Temperature Cells
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Solution Overview
Problem
Existing battery charging methods are not suitable for all scenarios, particularly in low-temperature environments, where they can cause damage to power batteries due to lithium plating.
Innovation Solution
A battery charging control method and apparatus that involve acquiring a battery heating state and sending a message to a charging device to determine whether to enter a charging stage, thereby avoiding damage by ensuring the battery is heated sufficiently before charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If national standard charging procedures are used in low-temperature environments, then charging can be performed according to standard protocols, but the battery may suffer damage due to lithium plating
Solution Approach 1:
The patent implements preliminary heating of the battery before charging in low-temperature environments. The control system detects battery temperature and activates heating elements to raise the battery temperature to a safe range (above 0°C) before initiating the charging process, thereby preventing lithium plating and battery damage while maintaining standard charging procedures
Solution Approach 2:
The patent dynamically adjusts charging parameters based on battery temperature. When temperature is below the threshold, the system modifies charging current and voltage parameters, reduces charging rate, or suspends charging until temperature conditions are appropriate, thus adapting the charging process to temperature conditions while preventing battery damage
2Temperature
If the battery self-heats before charging, then the battery temperature reaches the required level, but the user must wait for the heating process to complete
Solution Approach 1:
The patent introduces an external charging device as an intermediary that provides active heating capability. The charging device contains heating elements that can rapidly heat the battery through controlled current application, serving as a mediator between the user's charging request and the battery's temperature requirement, thereby significantly reducing the waiting time compared to passive self-heating
3Productivity
If the charging device outputs power immediately upon connection, then charging starts quickly, but the battery may be damaged in low-temperature conditions
Solution Approach 1:
The patent implements a feedback control mechanism where the control system continuously monitors battery temperature and charging parameters. Based on real-time temperature feedback, the system dynamically adjusts charging power output - preventing full power output when temperature is low, and gradually increasing power as temperature rises to safe levels, thus balancing charging speed with battery safety
Solution Approach 2:
The patent makes the charging process dynamic by continuously adjusting charging parameters based on real-time battery temperature conditions. The system transitions from a static immediate-power-output approach to a dynamic adaptive approach where charging current and voltage are modulated according to temperature, enabling both rapid charging when conditions permit and safety protection when conditions are unfavorable
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method allows for safe charging of power batteries in low-temperature environments by autonomously implementing pulse heating followed by DC charging, preventing potential damage and improving user experience.
Implementation Method 1
After the low-temperature pulse heating stage of the power battery
Data Source
AI summary
The present application provides a battery charging control method and apparatus, an electrical device, a charging device, and a storage medium. The battery charging control method includes: acquiring a battery heating state; and sending a first message carrying the battery heating state to a charging device, so that the charging device judges whether to enter a battery charging stage according to the battery heating state; wherein the battery heating state is a heating state or a heating completion state. Compared with the prior art, in the present application, the electrical device can autonomously implement a process of pulse heating followed by DC charging by relying on the interaction with the charging device, thereby avoiding possible damage to a power 10 battery caused by charging in a low-temperature environment and improving the experience of a user.