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Step-down rectifier circuit and wireless charging control unit

A rectifier circuit and control unit technology, applied in electrical components, circuit devices, battery circuit devices, etc., can solve problems such as large size, large number of electrical components, and circuit damage.

Inactive Publication Date: 2020-10-23
ZONGMU TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing vehicle-side rectification topological structure working under the above working conditions has a large number of electrical components, resulting in a large volume, which is not conducive to miniaturization, and the production cost is high
Moreover, the large number of electrical components in the existing step-down rectifier circuit will form more output current ripples, and the circuit may be damaged due to the transient higher than

Method used

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  • Step-down rectifier circuit and wireless charging control unit
  • Step-down rectifier circuit and wireless charging control unit
  • Step-down rectifier circuit and wireless charging control unit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0068] The first embodiment, such as figure 1 As shown, the present invention provides a step-down rectifier circuit, including:

[0069] The filter circuit WF is electrically connected between the first connection point BA1 and the second connection point BA2 of the charged storage device BA;

[0070] Filter switch structure one S1 connection point one S1.1 is electrically connected to resonant device one P1 connection point two P1.2, filter switch structure one S1 connection point two S1.2 is electrically connected to filter switch structure two S2 connection point one S2.1 is electrically connected to the connection point BA1 of the charged storage device BA through the inductor L1, and its control point is used as the control terminal Ctrl1 of the step-down rectification circuit;

[0071] The connection point 2 S2.2 of the filter switch structure 2 S2 is electrically connected to the connection point 2 Q1.2 of the rectifier device 1 Q1, the connection point 2 S3.2 of the...

no. 2 example

[0080] The second embodiment, continue to refer to figure 1 As shown, the present invention provides a step-down rectifier circuit, including:

[0081] The filter circuit WF is electrically connected between the first connection point BA1 and the second connection point BA2 of the charged storage device BA;

[0082] Filter switch structure one S1 connection point one S1.1 is electrically connected to resonant device one P1 connection point two P1.2, filter switch structure one S1 connection point two S1.2 is electrically connected to filter switch structure two S2 connection point one S2.1 is electrically connected to the connection point BA1 of the charged storage device BA through the inductor L1, and its control point is used as the control terminal Ctrl1 of the step-down rectification circuit;

[0083] The connection point 2 S2.2 of the filter switch structure 2 S2 is electrically connected to the connection point 2 Q1.2 of the rectifier device 1 Q1, the connection point...

no. 3 example

[0093] The third embodiment, such as Figure 6 As shown, the present invention provides a wireless charging control unit, including:

[0094] The vehicle-side induction coil VP is suitable for wireless current transmission with the wireless charging ground-side coil through electromagnetic induction;

[0095] Step-down rectification step-down rectification circuit RC, which is connected between the induction coil VP at the vehicle end and the charged storage device BA of the vehicle battery, which is driven by the DSP controller to provide different charging paths for the charged storage device (BA) of the vehicle battery )Charge;

[0096] DSP controller, before starting charging, it can judge whether the wireless charging ground coil and the vehicle induction coil are in place according to the working conditions of the vehicle-side induction coil and the vehicle-mounted battery to be charged storage device BA, and it can be charged according to the vehicle-mounted battery T...

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Abstract

The invention discloses a wireless charging control unit. The wireless charging control unit comprises a voltage reduction rectification circuit which selects a charging path according to controller driving; and a controller which judges whether charging can be implemented or not according to the working condition of the charged induction coil and the working condition of the charged power storageequipment, adjusts the charging duration of the step-down rectifier circuit according to the voltage of the charged power storage equipment, and selects a charging path to charge the charged power storage equipment according to the potentials at the two ends of the charged induction coil. The voltage reduction rectification circuit is connected with a charged induction coil, and each control point of the voltage reduction rectification circuit is connected with different driving pins of the controller. The invention further discloses a voltage reduction rectifying circuit. The wireless charging control unit provided by the invention can reduce the current of a vehicle end coil, reduce the current of a rectifier tube, reduce the ripple of the output current, prevent the transient voltage from damaging equipment, reduce the number and size of required electrical elements, reduce the cost and improve the wireless charging efficiency.

Description

technical field [0001] The invention relates to the field of industrial control, in particular to a step-down rectification circuit connected between a wireless charging induction coil to be charged and a charged storage device (BA). The present invention also relates to a wireless charging control unit with the step-down rectification circuit. Background technique [0002] In recent years, new energy vehicles have developed rapidly, and more and more people have begun to choose to accept electric vehicles as an environmentally friendly way of travel. At the same time, it is also considered by many automobile manufacturers to be the direction of future automobile development, and they have invested a lot of money in research and development. However, due to the practical obstacles of charging problems, it has not been fully promoted. At present, the most important parts of electric vehicles are batteries and charging equipment. Due to technical bottlenecks, they can only u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/02H02J7/00H02J50/12H02M7/25H02M7/219
CPCH02J7/0034H02J7/02H02M7/219H02M7/25H02J50/12
Inventor 郭帅潘前利
Owner ZONGMU TECH SHANGHAI CO LTD
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