Battery Heating Circuit Using Voltage Inversion and Freewheeling
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Solution Overview
Problem
Batteries experience decreased capacity and performance under low temperature conditions due to increased resistance and polarization, which affects their charge/discharge efficiency and service life.
Innovation Solution
A battery heating circuit comprising a switch unit, switching control module, damping component, energy storage circuit, freewheeling circuit, and energy superposition unit, which connects in series with the battery to control energy flow, sustain current, and superpose energy, thereby improving charge/discharge performance and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a battery operates under low temperature conditions, then the battery resistance increases and polarization increases, but the battery capacity is reduced and charge/discharge performance deteriorates
Solution Approach 1:
The patent changes the temperature parameter of the battery by introducing a heating circuit that raises the battery temperature from low temperature conditions to an optimal operating range, thereby improving charge/discharge performance and reducing resistance and polarization effects
2Reliability
If a heating circuit is introduced to improve battery performance, then charge/discharge performance improves, but circuit complexity increases
Solution Approach 1:
The heating circuit is designed to perform multiple functions: it not only heats the battery to improve performance but also incorporates safety protection features such as over-temperature protection and short-circuit protection, making the circuit multi-functional and reducing the need for separate protection circuits
Solution Approach 2:
The patent combines the heating function with control and protection functions into an integrated circuit system, merging multiple functions into a unified structure that reduces overall system complexity while maintaining all necessary functions
3Productivity
If a switch unit is used to control energy flow, then energy control efficiency improves, but safety risk increases due to potential failures and short circuits
Solution Approach 1:
The patent incorporates protection circuits before the switch unit that prevent harmful effects from switch failures or short circuits, providing beforehand cushioning that blocks dangerous currents and protects the battery and other components from damage
4Speed
If the switch unit switches off abruptly while current is flowing, then switching speed improves, but high voltage is induced that can damage circuit components
Solution Approach 1:
The patent introduces a protection circuit that provides beforehand cushioning against the harmful high voltage induced by abrupt switching, blocking the high voltage before it can damage other circuit components while allowing fast switching operation
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 battery heating circuit enhances charge/discharge performance, prevents damage from abrupt current drops, and increases discharging current efficiency, ensuring safer operation and improved battery performance in low temperature environments.
Implementation Method 1
the current storage component L1, and is configured to sustain a current flowing in the battery after the switch unit (1) switches on and then switches off
Implementation Method 2
the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1
Implementation Method 3
the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1
Implementation Method 4
a damping component R1, the switch unit (1), the current storage component L1, and the charge storage component C1 are connected in series
Data Source
AI summary
Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 1, a switching control module 100, a damping component R1, an energy storage circuit, a freewheeling circuit 20, and an energy superposition unit; the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1, and the charge storage component C1 are connected in series; the switching control module 100 is connected with the switch unit 1, and is configured to control ON/OFF of the switch unit 1, so as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit.