Charging device, method for controlling charging device and method for detecting peripheral device

• US 9,583,956 B2
• Filed: 06/18/2014
• Issued: 02/28/2017
• Est. Priority Date: 12/28/2011
• Status: Active Grant

• Current Assignee: BYD Company Limited
• Original Assignee: BYD Company Limited, Shenzhen BYD Auto R&D Company Limited
• Inventors: Wang, Xinghui, Niu, Kaihua, Chen, Xiao, Huang, Jianwei, Zong, Chaojie, Zhang, Jianhua, Shen, Xiaofeng, Liu, Lin
• Primary Examiner(s): Pelton, Nathaniel
• Application Number:
  US14/308,677
• Publication Number:
  US 20140292261A1
• Time in Patent Office: 986 Days
• Field of Search: 320/107, 320/109
• US Class Current: 1/1
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 3/0023 Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/0069 relating to the isolation, e.g. ground fault or leak current
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 58/00 Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 3/322 the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0036 using connection detecting circuits H02J7/0034 takes precedence
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• 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 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/12 : Remote or cooperative charging
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A charging device, a method for controlling a charging device, and a method for detecting a peripheral device are provided. The charging device comprises: a charging gun; a power module; and a controlling module coupled with the charging gun and the power module, wherein the controlling module is configured to determine whether the charging gun is connected with a peripheral device to be charged, and if yes, to control the power module to convert AC electricity to DC electricity to charge the peripheral device. A method for controlling a charging device is also provided. The method comprises: determining whether the charging gun is connected with a peripheral device; and if yes, controlling the power module to convert AC electricity to DC electricity to charge the peripheral device if the charging gun is determined to be connected to the peripheral device.

Claims

1. A charging device, comprising:

a charging gun;

a power module;

a low voltage auxiliary power source; and

a controlling module coupled with the charging gun and the power module, wherein the controlling module is configured to;

determine whether the charging gun is connected with a peripheral device to be charged;

send a first request to the peripheral device within a first time period;

determine whether a first message is received from the peripheral device after the first request is sent;

determine whether the first request is a last item to be sent to the peripheral device;

if the first request is not a last item to be sent to the peripheral device;

reset the low voltage auxiliary power source;

send a second request to the peripheral device;

if a second message is received from the peripheral device within a second time period after the second request is transmitted, control the power module to convert AC electricity to DC electricity to charge the peripheral device if the charging gun is determined to be connected to the peripheral device.

2. The charging device according to claim 1, wherein the controlling module is further configured to wait for a connection confirmation signal from the charging gun before sending the first request to the charging gun, and to wait for the first message from the charging gun before determining that the charging gun is connected to the peripheral device.

3. The charging device according to claim 2, wherein if the first request to be sent is not of a last item to be sent to the charging gun, the controlling module is further configured to send the second request after the first request is sent.

4. The charging device according to claim 2, wherein the controlling module is further configured to send a third request to stop the charging gun from sending the first message, and to receive a time-out signal from the charging gun after the third request is sent.

5. The charging device according to claim 1, wherein the first message indicates a working state of the charging gun.

6. The charging device according to claim 1, further comprising a leakage detecting module coupled with the controlling module, wherein the controlling module is further configured to control the leakage detecting module to detect a leakage of the charging device.

7. The charging device according to claim 1, wherein the controlling module is configured to send the second request after the low voltage auxiliary power source is reset.

8. The charging device according to claim 1, wherein the second message indicates a working state of the charging gun.

9. The charging device according to claim 2, wherein the second message indicates a working state of the charging gun.

10. A method for controlling a charging device, wherein the charging device comprises a charging gun, a power module, and a low voltage auxiliary power source, the method comprising:

determining whether the charging gun is connected with a peripheral device;

sending a first request to the peripheral device within a first time period;

determining whether a first message is received from the peripheral device after the first request is sent;

determining whether the first request is a last item to be sent to the peripheral device;

if the first request is not a last item to be sent to the peripheral device;

resetting the low voltage auxiliary power source;

sending a second request to the peripheral device;

if a second message is received from the peripheral device within a second time period after the one or more second requests are transmitted, controlling the power module to convert AC electricity to DC electricity to charge the peripheral device if the charging gun is determined to be connected to the peripheral device.

11. The method according to claim 10, wherein the determining whether the charging gun is connected with the peripheral device includes:

waiting for a connection confirming signal to judge whether the charging gun is connected with the peripheral device before sending the first request to the charging gun;

waiting for the first message before determining that the charging gun is connected to the peripheral device after receiving the first message.

12. The method according to claim 10, wherein at least one of the first message and the second message indicates a working state of the charging gun.

13. A method for detecting a peripheral device to be charged by a charging device, comprising:

determining whether the charging device is connected with a peripheral device; and

starting a communication between the charging device and the peripheral device responsive to determining that the charging device is connected with the peripheral device;

wherein the communication includes;

sending a first request to the peripheral device within a first time period;

determining whether a first message is received from the peripheral device after the first request is sent;

determining whether the first request is a last item to be sent to the peripheral device;

responsive to determining that the first request is not a last item to be sent to the peripheral device;

resetting the low voltage auxiliary power source;

sending a second request to the peripheral device;

responsive to determining that a second message is received from the peripheral device within a second time period after the second request is transmitted, controlling the charging device to charge the peripheral device.

14. The method according to claim 13, wherein at least one of the first message and the second message indicates a working state of the charging device.