A rapid heating circuit and method for an oscillating battery pack
A rapid heating and battery pack technology, applied in the direction of battery temperature control, etc., can solve the problems of low heating efficiency, high cost, complex structure, etc., and achieve the effects of high heating efficiency, fast heating speed and simple structure
Inactive Publication Date: 2017-02-08
SHANDONG WINA GREEN POWER TECH
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Problems solved by technology
The common disadvantages of these two methods are slow heating rate, low heating efficiency, complicated structure and high cost.
The main reason is that the battery is heated from the outside, so that the inside of the battery can only be heated by heat conduction. Since the temperature of the external heat source is restricted by various factors, it cannot be very high, so the temperature rise rate of the external heating cannot well meet the actual needs. , At the same time cause a lot of heat waste, low heating efficiency
At the same time, a complex fluid temperature control or heating device is required, which makes the structure complicated and the cost high
Method used
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[0026] As shown in the figure, the rapid heating circuit of the oscillating battery pack includes an oscillating circuit connected in series at both ends of the battery pack 1, which is composed of an inductor 2 and a capacitor 3 connected in series. A series controllable switch 8 is connected in series between the battery packs 1, a voltage and current detector 4 is installed on the series connection of the inductor 2 and the capacitor 3, and the voltage and current detector 4, the parallel controllable switch 5 and the series controllable switch 8 is electrically connected to the controller 6 .
[0027] In this embodiment, both the parallel controllable switch 5 and the series controllable switch 8 adopt fast relays to realize the function of fast on-off under the control of the controller. The battery pack 1 is a combination of single cells or single cells connected in series and parallel. The rapid heating circuit of the oscillating battery pack also includes a temperatur...
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The invention discloses an oscillating type rapid battery pack heating circuit and method. The rapid heating circuit comprises an oscillating circuit which is connected in series with the two ends of a battery pack and formed by means of connecting an inductor and a capacitor in series, wherein the two ends of the capacitor are respectively connected with a parallel-connection controllable switch in parallel, a series-connection controllable switch is connected in series with the oscillating circuit and the battery pack, and a series-connection line of the inductor and the capacitor is provided with a voltage-current detector. The rapid heating circuit also comprises a controller which is electrically connected with the voltage-current detector, the parallel-connection controllable switch and the series-connection controllable switch. The parallel-connection controllable switch and the series-connection controllable switch are relays. The battery pack is a cell battery or an assembly of cell batteries which are connected in parallel and in series. The rapid heating circuit also comprises a temperature sensor which is electrically connected with the input end of the controller. With the structure, the rapid heating circuit and method can be used for preheating the interior of the battery pack and are high in heating efficiency, high in heating speed, small in heat waste, low in cost, and especially applicable to battery packs of electric cars.
Description
technical field [0001] The invention relates to a rapid heating circuit and method for an oscillating battery pack. Background technique [0002] Various factors such as energy crisis, environmental protection, and climate change have made countries all over the world attach great importance to the development of new energy vehicles, especially pure electric vehicles. At present, the most critical technology affecting the development of electric vehicles is the performance of batteries. Lithium battery is currently recognized as the most potential energy storage battery for electric vehicles. Compared with other major energy storage batteries that are relatively mature at present, lithium batteries have comprehensive advantages such as lifespan, energy density, and power density. However, the low-temperature performance of lithium batteries has not yet been well resolved. The capacity and charging performance of lithium batteries, especially lithium iron phosphate batteri...
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IPC IPC(8): H01M10/63
CPCY02E60/10
Inventor 张翼张风太熊俊威杜纪磊
Owner SHANDONG WINA GREEN POWER TECH