I. Overview

New energy battery heater, this heater has a thin structure and can be bent arbitrarily according to the shape of the workpiece to ensure close contact with the workpiece and ensure maximum heat transfer. The new energy battery heater is made of silicon rubber with good rigid temperature and excellent insulation performance on the upper and lower surfaces and glass fiber cloth, and the middle is made of a resistive circuit made of special alloy foil. It provides a more uniform thermal field, shorter heating time and faster response time than the filamentary electric heating structure, lower power load and longer service life than the filamentary electric heating structure.

Due to the high structural strength and uniform heat generation of this product, it has been widely used in the antifreeze and heating of electric vehicle batteries. It can provide a heat source for the battery pack and solve the impact of low temperature on lithium batteries.

This product can be made into various sizes and shapes according to the requirements of heating workpieces. The invention belongs to the technical field of pure electric vehicles, and particularly relates to a heating system of a power battery of a pure electric vehicle and a control method thereof.

Rated voltage: can be designed according to needs

Power density: determined by temperature requirements, under normal circumstances, the power density of 0.1W/cm2 can make the heater surface temperature reach 50℃

Dielectric strength: 1500V/min

Insulation resistance: 100MΩ

Flame retardant grade: UL94V-0

2. Features

1. Occupy very small space; very light weight; thin thickness.

2. It has certain flexibility.

3. Double insulation of flame retardant silicone rubber and alkali-free glass fiber makes the insulation performance of the heater more reliable.

4. The alloy foil of nickel alloy is etched and processed, which has fast heating, high thermal efficiency and long service life.

5. Different heating power requirements and heating temperature requirements can be met in different areas. It can be designed as required to achieve temperature distribution on the heating surface.

6. The thermal inertia is small, the temperature control precision is high, and the heating speed is fast.

3. Application areas

The new energy battery heater is used in the antifreeze heating of batteries and battery packs in various electric vehicles, which can provide heat sources for battery packs, so as to solve the impact of low temperature on lithium batteries.

Technical parameter