Load system

• US 8,810,200 B2
• Filed: 12/05/2013
• Issued: 08/19/2014
• Est. Priority Date: 06/09/2011
• Status: Active Grant

• Current Assignee: Tatsumi Corporation (Mitsuba Corporation)
• Original Assignee: Tatsumi Corporation (Mitsuba Corporation)
• Inventors: Kondo, Toyoshi
• Primary Examiner(s): DIAO, M BAYE
• Application Number:
  US14/098,149
• Publication Number:
  US 20140091762A1
• Time in Patent Office: 257 Days
• Field of Search: 320/104, 320/109, 324/429, 307/11
• US Class Current: 320/117
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2200/36 Vehicles designed to transport cargo, e.g. trucks
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/44 Wheel Hub motors, i.e. integrated in the wheel hub
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 2260/28 Four wheel or all wheel drive
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/52 Wind-driven generators
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: G01R 31/386 using test-loads
• CPC Class Codes: G01R 31/40 Testing power supplies testing photovoltaic devices H02S50/10
• CPC Class Codes: H02J 7/0024 Parallel/serial switching of connection of batteries to charge or load circuit
• CPC Class Codes: H02S 50/10 Testing of PV devices, e.g. of PV modules or single PV cells testing of semiconductor devices during manufacturing H01L22/00
• CPC Class Codes: Y02E 10/50 : Photovoltaic [PV] energy
• 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 10/72 : Electric energy management in electromobility
• 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
• 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 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A load system includes a power supply input unit for load test of an external power supply, a charging circuit or a charger to which electric power from the power supply is supplied via the power supply input unit, a plurality of loads to which the electric power from the charging circuit or the charger is supplied, and a control circuit that switches selectively and connects the plurality of loads to the charging circuit or the charger. The plurality of loads is a plurality of storage batteries as a load resistance. The control circuit is configured to switch selectively and connect the plurality of storage batteries to the charging circuit or the charger such that the storage battery connected to the charging circuit or the charger among the plurality of storage batteries is charged by the charging circuit or the charger.

Claims

1. A load system, comprising:

a power supply input unit for load test of an external power supply;

a charging circuit or a charger to which electric power from the power supply is supplied via the power supply input unit;

a plurality of loads to which the electric power from the charging circuit or the charger is supplied; and

a control circuit that switches selectively and connects the plurality of loads to the charging circuit or the charger,

wherein the plurality of loads is a plurality of storage batteries as a load resistance, and

the control circuit is configured to switch selectively and connect the plurality of storage batteries to the charging circuit or the charger such that the storage battery connected to the charging circuit or the charger among the plurality of storage batteries is charged by the charging circuit or the charger.

2. The load system according to claim 1,

wherein the storage battery includes a secondary battery and an auxiliary storage battery;

wherein the charging circuit includes a rapid charging circuit used for a rapid charging of the secondary battery, and a small-capacity charging circuit used for a charging of the auxiliary storage battery; and

wherein the small-capacity charging circuit performs a fine adjustment of voltage and current, which are charged by the rapid charging circuit.

3. The load system according to claim 1, further comprising:

a charger connected to each of the plurality of storage batteries; and

a load switching unit to which the electric power from the power supply is input via the power supply input unit,

wherein the load switching unit is configured to be operationally controlled by the control circuit to switch the charger and supply charging voltage and charging current to the storage battery connected to the charger.

4. The load system according to claim 1,

wherein the load further includes a plurality of resistors as a plurality of load resistances.

5. The load system according to claim 1, comprising

an output power control unit connected to the control circuit so as to allow supplying power to the control circuit.

6. The load system according to claim 1, comprising

a load storage case that includes a load storage unit and a control panel,

wherein the storage battery is removably disposed in the load storage unit of the load storage case, and

the power supply input unit is disposed in the control panel.

7. The load system according to claim 1,

wherein the storage battery, the control circuit, and the power supply input unit are mounted on a vehicle.

8. The load system according to claim 7,

wherein the load mounted on the vehicle further includes a plurality of resistors as a load resistance.

9. The load system according to claim 8,

wherein the storage battery is used as a battery to supply electric power to a power supplied unit of the vehicle.

10. The load system according to claim 8,

wherein the storage battery is removably attached to the vehicle.

11. The load system according to claim 7,

wherein the storage battery is used as a battery to supply electric power to a power supplied unit of the vehicle.

12. The load system according to claim 11,

wherein the vehicle includes a motor that drives a wheel as the power supplied unit, and

the battery of the vehicle is used as a drive power supply of the motor.

13. The load system according to claim 7,

wherein the storage battery is removably attached to the vehicle.

14. The load system according to claim 13,

wherein a load storage case that includes a load storage unit and a control panel is disposed on the vehicle,

the storage battery is removably disposed in the load storage unit of the load storage case, and

the power supply input unit is disposed in the control panel.