Battery storage device system, and motor driving body and moving body using the system

• US 8,283,878 B2
• Filed: 02/16/2009
• Issued: 10/09/2012
• Est. Priority Date: 02/16/2009
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Suyama, Hiroshi
• Primary Examiner(s): Ip, Paul
• Application Number:
  US12/673,940
• Publication Number:
  US 20110037420A1
• Time in Patent Office: 1,331 Days
• Field of Search: 318/139, 318/254, 318140-150, 307/9.1, 320/137, 320/150, 320/152
• US Class Current: 318/139
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: B60L 58/27 by heating
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/633 characterised by algorithms, flow charts, software details or the like
• CPC Class Codes: H01M 10/656 characterised by the type of heat-exchange fluid
• CPC Class Codes: H01M 10/66 Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
• CPC Class Codes: H01M 10/663 the system being an air-conditioner or an engine
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

The invention provides a high-efficiency battery storage device system, and a motor driving body and a moving body using the system. The battery storage device system comprises (1) a main battery storage device A having high energy density relative to an auxiliary battery storage device B, (2) the auxiliary battery storage device B having high output density relative to the main battery storage device A, (3) a warm-up means for warming up the main battery storage device A to a predetermined temperature or more, (4) a warm-up monitoring means for monitoring a need for warm-up with respect to the main battery storage device A, (5) an operation mode switching means for selecting an operation mode from a warm-up operation mode and a normal operation mode and performing the selected operation mode, and (6) an electricity supply system supplying an electric power to an outside of the battery storage device system.

Claims

1. A battery storage device system that has a main battery storage device A and an auxiliary battery storage device B as power source, comprising:

(1) the main battery storage device A that has high energy density relative to the auxiliary battery storage device B, the main battery storage device A having an output ability that is equal to or more than an output requirement necessary for the battery storage device system by a single output of the main battery storage device A in a temperature range of a predetermined temperature or more, and the output ability of the main battery storage device A being below the output requirement in a temperature range lower than the predetermined temperature;

(2) the auxiliary battery storage device B that has high output density relative to the main battery storage device A, the auxiliary battery storage device B having the output ability that is equal to or more than the output requirement by a single output of the auxiliary battery storage device B or simultaneous outputs of the main battery storage device A and the auxiliary battery storage device B in the temperature range lower than the predetermined temperature;

(3) a warm-up means for warming up the main battery storage device A to the predetermined temperature or more;

(4) a warm-up monitoring means for monitoring a need for warm-up with respect to the main battery storage device A;

(5) an operation mode switching means for selecting an operation mode from a warm-up operation mode and a normal operation mode and performing the selected operation mode, wherein the warm-up operation mode starts warm-up of the main battery storage device A and the single output of the auxiliary battery storage device B or the simultaneous outputs of the main battery storage device A and the auxiliary battery storage device B are performed while the warm-up being performed when the warm-up monitoring means determines that the warm-up of the main battery storage device A is required, and the normal operation mode stops the warm-up of the main battery storage device A and the single output of the main battery storage device A is performed when the warm-up monitoring means determines that the warm-up of the main battery storage device A is not required; and

(6) an electricity supply system for supplying an electric power to an outside of the battery storage device system, the electric power being obtained by the single output of the auxiliary battery storage device B or the simultaneous outputs of the main battery storage device A and the auxiliary battery storage device B in the warm-up operation mode, or obtained by the single output of the main battery storage device A in the normal operation mode.

2. The battery storage device system according to claim 1, wherein the warm-up means is a heat exchange means for performing heat exchange between the main battery storage device A and the auxiliary battery storage device B.

3. The battery storage device system according to claim 1, wherein the warm-up monitoring means includes a temperature measuring device that monitors a temperature at the main battery storage device A and data of operation mode switching temperature that is set to the temperature range of the predetermined temperature or more as temperature data, the temperature data becoming a criterion for determining the need for warm-up, and

the warm-up monitoring means determines that the warm-up of the main battery storage device A is required when the temperature at the main battery storage device A is lower than the operation mode switching temperature.

4. The battery storage device system according to claim 1, wherein the warm-up monitoring means includes an output measuring device that monitors an output at the main battery storage device A and predetermined data of operation mode switching output that is seemed to reach the temperature range of the predetermined temperature or more as output data, the output data becoming a criterion for determining the need for warm-up, and

the warm-up monitoring means determines that the warm-up of the main battery storage device A is required when the output of the main battery storage device A is lower than the operation mode switching output.

5. The battery storage device system according to claim 1, wherein the warm-up monitoring means is activated in at least a starting stage of the battery storage device system.

6. The battery storage device system according to claim 1, wherein the operation mode switching means has only one warm-up operation mode in which the single output of the auxiliary battery storage device B is performed while the warm-up being performed, and

the operation mode switching means stops the warm-up of the main battery storage device A and switches the single output of the auxiliary battery storage device B to the single output of the main battery storage device A when the warm-up monitoring means determines that the warm-up of the main battery storage device A is not required.

7. The battery storage device system according to claim 1, wherein the warm-up monitoring means further monitors progress of the warm-up when determining that the warm-up of the main battery storage device A is required,

the operation mode switching means has at least two warm-up operation modes, the warm-up operation modes differing from each other in an activating state of the main battery storage device A and/or the auxiliary battery storage device B, and

the operation mode switching means selects an optimum warm-up operation mode according to the progress of the warm-up, the progress of the warm-up being determined by the warm-up monitoring means.

8. The battery storage device system according to claim 1, wherein the main battery storage device A is a solid electrolyte secondary battery.

9. The battery storage device system according to claim 8, wherein the auxiliary battery storage device B is a solid electrolyte secondary battery.

10. The battery storage device system according to claim 8, wherein the auxiliary battery storage device B is a lithium-ion secondary battery.

11. The battery storage device system according to claim 1, further comprising charging means for charging the main battery storage device A and the auxiliary battery storage device B.

12. A motor driving body comprising:

the battery storage device system defined in claim 1; and

a motor that is driven by an electric power supplied from the battery storage device system,

wherein the warm-up means of the battery storage device system is a heat exchange means for performing heat exchange between the main battery storage device A and the motor.

13. The motor driving body according to claim 12, further comprising charging means for charging the main battery storage device A and the auxiliary battery storage device B,

wherein a charging source of the charging means is the motor.

14. A moving body comprising:

the battery storage device system defined in claim 1; and

a motor that is driven by an electric power supplied from the battery storage device system,

wherein the warm-up means of the battery storage device system is a heat exchange means for performing heat exchange between the main battery storage device A and the motor.

15. The moving body according to claim 14, wherein the warm-up monitoring means of the battery storage device system includes a temperature measuring device that monitors a temperature at the main battery storage device A and data of operation mode switching temperature that is set to a temperature range exceeding a temperature range of ambient temperature to which the moving body is probably subject as temperature data, the temperature date becoming a criterion for determining a need for warm-up, and

the warm-up monitoring means determines that the warm-up of the main battery storage device A is required when the temperature at the main battery storage device A is lower than the operation mode switching temperature.

16. The moving body according to claim 14, further comprising charging means for charging the main battery storage device A and the auxiliary battery storage device B,

wherein a charging source of the charging means is the motor.