Battery Energy Circuit for Simultaneous Self-Heating and Charging
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Solution Overview
Problem
Existing battery technologies struggle to simultaneously achieve efficient battery heating and charging functions, particularly in low temperature environments, leading to reduced charging efficiency.
Innovation Solution
A battery energy processing device and method that utilizes a first circuit to receive energy from an energy exchange interface and charge the battery while a second circuit charges and discharges the battery to heat it, with a controller stabilizing the voltage to match the battery's voltage in real time, using bridge arms and coils to manage energy flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If battery heating function is implemented to increase battery temperature, then battery temperature increases, but battery charging function cannot be simultaneously realized
Solution Approach 1:
The patent divides the battery management system into two independent circuits: a first circuit dedicated to heating (with first bridge arms and first coils) and a second circuit dedicated to charging (with second bridge arms and second coils). This segmentation allows each circuit to operate independently and simultaneously, resolving the contradiction between heating and charging functions.
Solution Approach 2:
The patent creates a multi-functional battery management system where the battery can simultaneously perform multiple functions: heating through the first circuit and charging through the second circuit. The controller coordinates both circuits to achieve universal functionality, allowing the battery to handle heating, charging, or combined operations based on temperature and charge state requirements.
2Temperature
If battery charging is performed in low temperature environment, then charging capacity decreases, but charging efficiency is reduced
Solution Approach 1:
The patent implements preliminary heating action before charging by using the first circuit to raise the battery temperature to an optimal range. The controller monitors temperature and activates heating in advance, ensuring the battery is in the optimal temperature window (e.g., 0-45°C) before initiating charging through the second circuit, thereby maximizing charging efficiency.
Solution Approach 2:
The patent maintains continuous useful action by allowing the first circuit to heat the battery simultaneously while the second circuit charges the battery. This continuous dual-operation mode ensures that heating and charging occur without interruption, maintaining optimal temperature throughout the charging process to sustain high charging efficiency.
3Reliability
If voltage stabilization is implemented during battery heating and charging, then charging failures are reduced, but system complexity increases
Solution Approach 1:
The patent implements feedback control through the controller that continuously monitors battery temperature, charge state, and voltage levels. Based on this feedback, the controller dynamically adjusts the duty cycles of PWM signals to both circuits, stabilizing voltage during simultaneous heating and charging operations. This feedback mechanism prevents overcharging, overheating, and voltage fluctuations that could cause charging failures.
Solution Approach 2:
The patent employs dynamic control where the controller continuously adapts the operating parameters of both circuits based on real-time battery conditions. The PWM duty cycles, switching frequencies, and circuit configurations are dynamically adjusted to maintain optimal voltage levels during the simultaneous heating and charging process, ensuring stability without requiring overly complex hardware.
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
Enables battery charging during self-heating, stabilizing voltage fluctuations, and reducing charging failures, thereby enhancing charging efficiency and safety.
Implementation Method 1
control the second circuit to charge and discharge the battery to heat the battery
Implementation Method 2
control the first circuit to receive energy from the energy exchange interface and output the energy to the battery to charge the battery
Data Source
AI summary
The present disclosure belongs to the field of vehicles, and relates to a battery energy processing device and method and a vehicle, which can charge batteries during self-heating of the batteries. The battery energy processing device includes: an energy exchange interface; a first circuit, wherein a first end of the first circuit is connected with the energy exchange interface, and a second end of the first circuit is connected with a battery; a second circuit, wherein a first end of the second circuit is connected with the battery; an energy storage device, connected with a second end of the second circuit; and a controller, configured to: in a first preset state, control the second circuit to charge and discharge the battery to heat the battery, and control the first circuit to receive energy from the energy exchange interface and output the energy to the battery to charge the battery.