Battery heating device for vehicle
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Solution Overview
Problem
Existing battery heating devices for vehicles face challenges in efficiently heating batteries while minimizing heat loss in the heater core and radiator, particularly due to restrictions in switching the flow of cooling water.
Innovation Solution
The battery heating device incorporates a high-temperature-side radiator and a heater core arranged in parallel, with a battery temperature adjusting unit and a high-temperature-side radiator flow rate reducing part to optimize the flow of heat medium, allowing flexible routing and reducing heat loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the heat medium flows through the high-temperature-side radiator to be discharged to the outside, then the heat medium can be cooled, but heat loss occurs and battery heating efficiency is reduced
Solution Approach 1:
The patent implements dynamic flow path switching by providing multiple branches (first branch to high-temperature-side radiator, second branch to battery temperature adjusting unit) and confluences that allow the heat medium to dynamically route between different paths based on operational requirements. This enables the system to adapt between cooling the heat medium through the radiator or directing it to heat the battery, resolving the contradiction by making the system flexible rather than fixed.
Solution Approach 2:
The patent changes the flow rate parameter of the heat medium by introducing a radiator flow rate reducing part that can reduce the flow rate of heat medium to the high-temperature-side radiator. By adjusting this parameter, the system can control the balance between heat dissipation and heat availability for battery heating, thereby reducing heat loss while maintaining necessary cooling capability.
2Productivity
If the flow rate of heat medium to the high-temperature-side radiator is high, then the radiator can effectively cool the heat medium, but heat loss increases and battery heating is compromised
Solution Approach 1:
The patent enables dynamic adjustment of heat medium flow distribution between the high-temperature-side radiator and the battery temperature adjusting unit through multiple branches and confluences. The system can switch between prioritizing cooling efficiency and prioritizing heat availability for battery heating, resolving the contradiction by making the flow rate dynamic rather than fixed.
Solution Approach 2:
The patent introduces a radiator flow rate reducing part that directly controls the flow rate parameter of heat medium to the high-temperature-side radiator. By reducing this parameter when battery heating is needed, the system maintains cooling efficiency when required while minimizing heat loss during battery heating operations.
3Temperature
If the heater core is used to heat the cabin, then the cabin temperature is improved, but heat available for battery heating is reduced
Solution Approach 1:
The patent implements dynamic flow path switching with multiple branches (one to heater core, another to battery temperature adjusting unit) and confluences that allow the heat medium to route to different destinations based on operational priorities. The system can dynamically allocate heat medium flow between cabin heating and battery heating needs, resolving the contradiction by enabling flexible heat distribution rather than fixed routing.
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
This configuration enables efficient heating of the battery by reducing heat loss in the high-temperature-side radiator, thus achieving rapid and effective battery heating.
Implementation Method 1
a high-temperature-side radiator and a heater core arranged in parallel with each other
Implementation Method 2
a battery temperature adjusting unit configured to heat a battery with a heat medium
Data Source
AI summary
A battery heating device includes: a radiator and a heater core arranged in parallel with each other; a battery temperature adjusting unit for heating a battery with a heat medium; a first branch branching the heat medium between the radiator and the heater core; a first confluence where the heat medium merges; a second branch where the heat medium from a heat emitter is branched to the battery temperature adjustment unit; a second confluence where the heat medium flowing through the battery temperature adjustment unit merges; and a radiator flow rate reducing part arranged in a passage for the heat medium from the first branch or the second branch closer to the radiator to the first confluence or the second confluence closer to the radiator via the radiator.