DEVICE FOR RECOVERING ELECTRIC ENERGY IN DC MOTOR-DRIVEN ELECTRIC VEHICLE

• US 20130307442A1
• Filed: 07/29/2013
• Published: 11/21/2013
• Est. Priority Date: 02/11/2011
• Status: Active Grant

• Current Assignee: XiaopPing Jiang
• Original Assignee: XiaopPing Jiang
• Inventors: JIANG, Xiaoping
• Granted Patent: US 9,099,947 B2
• Time in Patent Office: Days
• US Class Current: 318/139
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02J 7/14 for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
• CPC Class Codes: H02J 7/1492 by means of controlling devices between the generator output and the battery
• CPC Class Codes: H02P 7/06 for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A device for recovering electric energy in a DC motor-driven electric vehicle. The device includes a battery; a first inverter; an inductor; a first rectifier bridge or a second inverter; a DC motor; a second rectifier bridge or a third inverter; and a charger. The anode and the cathode of the battery are connected to input ends of the first inverter, respectively. One output end of the first inverter is connected to one end of a primary coil of the inductor. Another output end of the first inverter is connected to one input end of the first rectifier bridge or the second inverter. Another end of the primary coil of the inductor is connected to another input end of the first rectifier bridge. The charger is connected to the anode and the cathode of the battery for supplying power from an external power supply.

Claims

1. A device for recovering electric energy in a DC motor-driven electric vehicle, the device comprising:

a) a battery (E);

b) a first inverter (INV);

c) an inductor (T);

d) a first rectifier bridge (D1) or a second inverter;

e) a DC motor (M);

f) a second rectifier bridge (D2) or a third inverter; and

g) a charger (QL);

wherein

an anode and a cathode of the battery (E) are connected to input ends (1,

     2) of the first inverter (INV), respectively;

one output end (4) of the first inverter (INV) is connected to one end (1) of a primary coil (L1) of the inductor;

another output end (3) of the first inverter is connected to one input end (1) of the first rectifier bridge (D1) or the second inverter;

another end (2) of the primary coil (L1) of the inductor is connected to another input end (2) of the first rectifier bridge (D1);

output ends (3,

     4) of the first rectifier bridge (D1) are connected to the DC motor;

output ends (3,

     4) of a secondary coil (L2) of the inductor are connected to input ends (1,

     2) of the second rectifier bridge (D2) or the third inverter, respectively;

output ends (3,

     4) of the second rectifier bridge (D2) are connected to the anode and the cathode of the battery (E), respectively;

the inductor is employed to rectify the current and regulate the voltage;

the primary coil of the inductor is in series connection with the load of the DC motor;

when the DC motor works, the current and the voltage on the primary coil of the inductor produce an electromagnetic induction and influence the secondary coil of the inductor to produce the AC current and voltage on the secondary coil;

the AC current and voltage is further rectified and inverted into a direct current by the second rectifier bridge or the third inverter, and the direct current is input to the battery for electric energy recovery; and

the charger (QL) is connected to the anode and the cathode of the battery (E) for supplying power from an external power supply.

2. The device of claim 1, wherein

the inductor (T) comprises:

a magnetic core, a coil, a mounting bracket, a skeleton, and an insulating material; and

the inductor is assembled by winding the coil on the skeleton, inserting the magnetic core inside the coil, fixing the coil on the mounting bracket, and using the insulating material for package.

3. The device of claim 2, wherein the coil is made of an enamel-covered wire or an insulating conductive material.

4. The device of claim 1, wherein the DC motor is provided with a speed controller for controlling a rotary speed of the DC motor.

5. The device of claim 1, wherein the battery (E) is a battery pack or a single battery.

6. The device of claim 1, wherein the battery (E) comprises a power manager for management of charging and discharging of the battery (E).