We claim:
1. An electrical power feeding system for vehicle being configured to supply an electrical
power to an electrical vehicle (50) having a battery (52) and a charging circuit (51), said battery
(52) being provided for producing the electrical power which allows the electrical vehicle (50) to
run, the charging circuit (51) being configured to charge the battery (52), whereby the battery
(52) is charged by the charging circuit (51), said electrical power feeding system for vehicle
comprising:
a breaker means;
an electrical current measurement unit (2) being configured to measure an electrical current
value of a main electrical current which is applied to said breaker means;
a control means being configured to generate the electrical power feeding limitation signal when
a measured electrical current value of the main electrical current exceeds a first threshold value
(Th1), the electrical power feeding limitation signal includes an instruction of limiting the
electrical power supplied to the electrical vehicle (50);
an electrical power feeding unit for vehicle (4) being configured to receive the electrical power
through said breaker means, and being configured to supply the electrical power to the charging
circuit (51) of the electrical vehicle (50),
said electrical power feeding unit for vehicle (4) being configured to limit the electrical current
supplied to the electrical vehicle (50) when the control means generates the electrical power
feeding limitation signal,
wherein
when the measured electrical current value which is measured by the electrical current
measurement unit (2) exceeds a second threshold value (Th2) over a predetermined period of
time, the control means is configured to send the electrical power feeding limitation signal to
said electrical power feeding unit for vehicle (4),
wherein
when the measured electrical current value becomes lower than a third threshold value (Th3)
over a certain period of time under the condition where the electrical power feeding unit for
vehicle (4) decreases the electrical current supplied to the electrical vehicle (50), the control
means being configured to generate an electrical power feeding limitation cancellation signal,

the electrical power feeding limitation cancellation signal including an instruction of a
cancellation of limiting the electrical power supplied to the electrical vehicle (50),
wherein
said electrical power feeding unit for vehicle (4) is configured to make a cancellation of limiting
the electrical power which is supplied to the electrical vehicle (50) on the basis of the electrical
power feeding limitation cancellation signal,
wherein
the second threshold value (Th2) is set to be lower than the first threshold value (Th1),
wherein
the third threshold value (Th3) is set to be lower than the second threshold value (Th2).
2. The electrical power feeding system for vehicle as claimed in claim 1, wherein
said breaker means comprises a distribution board (1), said distribution board (1) comprising a
main breaker (11) and a branch breaker (12),
said electrical current measurement unit (2) being configured to measure the electrical current
value of the main electrical current which is applied to the main breaker (11),
said electrical power feeding unit for vehicle (4) being configured to receive the electrical power
through said branch breaker (12), and being configured to supply the electrical power to the
charging circuit (51) of the electrical vehicle (50),
said electrical power feeding unit for vehicle (4) being configured to limit the electrical power
which is supplied to the electrical vehicle (50) when the control means generates the electrical
power feeding limitation signal.
3. The electrical power feeding system for vehicle as claimed in claim 1 or 2, wherein
said electrical power feeding unit for vehicle (4) comprises a connector terminal (5) which is detachably attached to a connector (53) of the vehicle (50),
said electrical power feeding unit for vehicle (4) being configured to receive the electrical power through the breaker means, and being configured to supply the electrical power to the charging circuit (51) of the electrical vehicle (50) through the connector terminal (5).

4. The electrical power feeding system for vehicle as claimed in any one of claims 1 to 3,
wherein
said breaker means has an amperage rating,
the first threshold value (Th1) being higher than the amperage rating.
5. The electrical power feeding system for vehicle as claimed in claim 2, wherein
said main breaker (11) has an amperage rating,
the first threshold value (Th1) being higher than the amperage rating.
6. The electrical power feeding system for vehicle as claimed in any one of claims 1 to 5,
wherein
said electrical power feeding unit for vehicle (4) comprises a disconnect member (41) being configured to cut a power feeding path which is provided for supplying the electrical power to the electrical vehicle (50), wherein
when said control means generates the electrical power feeding limitation signal, said electrical power feeding unit for vehicle (4) cuts said power feeding path, whereby said electrical power feeding unit for vehicle (4) is configured to limit the electrical power which is supplied to the electrical vehicle (50).
7. The electrical power feeding system for vehicle as claimed in claim 6, wherein
said electrical power feeding unit for vehicle (4) comprising an electrical leak detector (43),
said electrical leak detector (43) being configured to detect existence or nonexistence of the
electrical leakage on the basis of the electrical current which flows through said power feeding
path,
said electrical leak detector (43) being configured to allow said disconnect member (41) to cut
said power feeding path when said electrical leak detector (43) detects the electrical leakage.
8. The electrical power feeding system as claimed in any one of claims 1 to 7, wherein
said electrical power feeding unit for vehicle (4) comprises a signal transmission unit (46) being

configured to send signal to the charging circuit (51) of the electrical vehicle (50),
wherein
when said control means generates the electrical power feeding limitation signal, said electrical
power feeding unit for vehicle (4) being configured to allow said signal transmission unit (46) to
send a charge stop signal to the charging circuit (51),
the charge stop signal including an instruction of stopping supplying the electrical power to the
electrical vehicle (50), whereby said electrical power feeding unit for vehicle (4) is configured to
limit the electrical power which is supplied to the electrical vehicle (50).
9. The electrical power feeding system for vehicle as claimed in claim 3, wherein
said electrical power feeding unit for vehicle (4) comprises a signal transmission unit (46),
said signal transmission unit (46) being configured to send signal to the charging circuit (51) of
the electrical vehicle (50) through the connector terminal (5),
wherein
when said control means generates the electrical power feeding limitation signal, said electrical
power feeding unit for vehicle (4) being configured to allow said signal transmission unit (46) to
send the charge stop signal to the charging circuit (51), said charge stop signal including an
instruction of stopping the charging, whereby the electrical current being supplied to the
electrical vehicle (50) is limited.
10. The electrical power feeding system for vehicle as claimed in any one of claims 1 to 7,
wherein
said electrical power feeding unit for vehicle (4) comprises a signal transmission unit (46),
said signal transmission unit (46) being configured to send the signal to the charging circuit (51)
of the electrical vehicle (50),
wherein
when said control means generates the electrical power feeding limitation signal, said electrical
power feeding unit for vehicle (4) being configured to allow said signal transmission unit (46) to
send the electrical current decreasing signal to said charging circuit (51), said electrical current
decreasing signal including an instruction of decreasing the electrical current supplied to the

electrical vehicle (50), whereby the electrical current being supplied to the electrical vehicle (50) is limited.
11. The electrical power feeding system for vehicle as claimed in claim 3, wherein
said electrical power feeding unit for vehicle (4) comprises a signal transmission unit (46),
said signal transmission unit (46) being configured to send signal to the charging circuit (51) of the electrical vehicle (50) through said connector terminal (5), wherein
when said control means generates the electrical power feeding limitation signal, said electrical power feeding unit for vehicle (4) being configured to allow said signal transmission unit (46) to send the electrical current decreasing signal to said charging circuit (51), said electrical current decreasing signal including an instruction of decreasing the electrical current supplied to the electrical vehicle (50), whereby the electrical current being supplied to the electrical vehicle (50) is limited.
12. The electrical power feeding system for vehicle as claimed in any one of claims 1 to 11,
wherein
when the measured electrical current value of the main electrical current exceeds the first threshold value (Th1) over a first period of time, said control means is configured to limit the electrical power supplied to the electrical vehicle (50).
13. The electrical power feeding system as claimed in claim 12, wherein
the predetermined period of time is set to be longer than the first period of time.
14. The electrical power feeding system as claimed in any one of claims 1 to 13, wherein the second threshold value (Th2) is set to be equal to or more than the amperage rating.
15. The electrical power feeding system for vehicle as claimed in any one of claims 1 to 14, wherein
said third threshold value (Th3) is set to be lower than the amperage rating.

16. The electrical power feeding system for vehicle as claimed in any one of claims 1 to 14,
wherein
when the measured electrical current value becomes lower than a third threshold value (Th3)
which is lower than the first threshold value (Th1) over a certain period of time under the
condition where the electrical power feeding unit for vehicle (4) stops supplying the electrical
power to the electrical vehicle (50), the control means being configured to generate an electrical
power feeding limitation cancellation signal,
the electrical power feeding limitation cancellation signal including an instruction of a
cancellation of limiting the electrical power supplied to the electrical vehicle (50),
wherein
said electrical power feeding unit for vehicle (4) is configured to make a cancellation of limiting
the electrical power which is supplied to the electrical vehicle (50) on the basis of the electrical
power feeding limitation cancellation signal.
17. The electrical power feeding system as claimed in claim 16, wherein said third threshold value (Th3) is set to be lower than the amperage rating.
18. The electrical power feeding system as claimed in any one of claims 1 to 17, wherein when said control means generates the electrical power feeding limitation signal, the electrical power feeding unit for vehicle (4) limits the electrical current supplied to the electrical vehicle (50) such that the main electrical current becomes lower than the amperage rating.
19. The electrical power feeding system for vehicle as claimed in any one of claims 1 to 18, wherein
said control means is a control unit (44) disposed within said electrical power feeding unit for vehicle (4).
20. The electrical power feeding system for vehicle as claimed in any one of claims 1 to 19,
wherein

said control means is a control device (3).
21. The electrical power feeding system for vehicle being configured to supply the electrical
power to a first electrical equipment and a second electrical equipment, said electrical power
feeding system for vehicle as claimed in claim 1, wherein
said control means is configured to determine a priority order of the first electrical equipment as
a first-order priority,
said control means is configured to determine a priority order of the second electrical equipment
as a second-order priority,
said control means is configured to determine a priority order of the electrical vehicle (50) as a
third-order priority,
the third-order priority is lower than the second-order priority,
the second-order priority is lower than the first-order priority,
wherein
when said control means generates the electrical power feeding limitation signal, said electrical
power feeding unit for vehicle (4) is configured to limit the electrical current supplied to the
electrical vehicle (50) having the third-order priority,
wherein
when said electrical power feeding unit for vehicle (4) limits the electrical current supplied to the
electrical vehicle (50), said control means is configured to recognize the first limitation condition,
wherein
when the control means generates the electrical power feeding limitation signal under the first
limitation condition, the electrical power feeding unit for vehicle (4) limits the electrical power
supplied to the second electrical equipment having the second-order priority.
22. The electrical power feeding system for vehicle being configured to supply electrical power
to a plurality of electrical equipments, said electrical power feeding system for vehicle as
claimed in claim 1, wherein
said control means is configured to determine a priority order of each one of the electrical equipments,

said control means is configured to determine a priority order of the electrical vehicle (50) as a
lowest-order priority among the electrical vehicle (50) and the electrical equipments,
wherein
when said control means generates the electrical power feeding limitation signal, the electrical
power feeding unit for vehicle (4) is configured to limit the electrical power which is supplied to
the electrical vehicle (50) having the lowest-order priority,
wherein
when said electrical power feeding unit for vehicle (4) limits the electrical power which is
supplied to the electrical vehicle (50) having the lowest-order priority, said control means is
configured to recognize a first limitation condition,
wherein
when said control means generates the electrical power feeding limitation signal under the first
limitation condition, the electrical power feeding unit for vehicle (4) is configured to limit the
electrical power which is supplied to the electrical equipment in the order of the electrical
equipment having the lowest-order priority to the electrical equipment having a highest-order
priority among a plurality of the electrical equipment.