Battery control system, battery pack, electronic device and charger
First Claim
1. A battery control system comprising:
- a temperature measurement unit that measures temperatures of two or more battery units of a plurality of battery units which are connected in series to each other; and
a battery control unit that controls charge and discharge of the battery units on the basis of the temperatures measured by the temperature measurement unit,wherein the battery control unitspecifies a lowest temperature unit in which the temperature is lowest and a highest temperature unit in which the temperature is highest, on the basis of the temperatures measured by the temperature measurement unit, when the charge of the battery unit is performed or the discharge of the battery unit is performed,continues the charge or the discharge as it is when a first condition in which a temperature difference between the highest temperature unit and the lowest temperature unit is equal to or greater than a reference value is not satisfied, andoutputs a first signal when the temperature difference satisfies the first condition.
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Accused Products
Abstract
A plurality of battery cells (100) are connected in series to each other. A temperature measurement unit (300) measures temperatures of two or more battery cells (100). A battery control unit (400) controls charge and discharge of the battery cells (100) on the basis of the temperatures measured by the temperature measurement unit (300). In addition, when the charge of the battery cells (100) is performed or the discharge of the battery cells (100) is performed, the battery control unit (400) specifies a lowest temperature cell having the lowest temperature and a highest temperature cell having the highest temperature, on the basis of the temperatures measured by the temperature measurement unit (300). In addition, the battery control unit (400) continues the charge or discharge, as it is, when a first condition in which a temperature difference ΔT between the highest temperature cell and the lowest temperature cell is equal to or greater than a reference value T1 is not satisfied. On the other hand, when the temperature difference ΔT satisfies the first condition, the battery control unit (400) outputs a first signal.
16 Citations
32 Claims
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1. A battery control system comprising:
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a temperature measurement unit that measures temperatures of two or more battery units of a plurality of battery units which are connected in series to each other; and a battery control unit that controls charge and discharge of the battery units on the basis of the temperatures measured by the temperature measurement unit, wherein the battery control unit specifies a lowest temperature unit in which the temperature is lowest and a highest temperature unit in which the temperature is highest, on the basis of the temperatures measured by the temperature measurement unit, when the charge of the battery unit is performed or the discharge of the battery unit is performed, continues the charge or the discharge as it is when a first condition in which a temperature difference between the highest temperature unit and the lowest temperature unit is equal to or greater than a reference value is not satisfied, and outputs a first signal when the temperature difference satisfies the first condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A battery pack comprising:
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a plurality of battery units which are connected in series to each other; a temperature measurement unit that measures temperatures of two or more battery units; and a battery control unit that controls charge and discharge of the battery units on the basis of the temperatures measured by the temperature measurement unit, wherein the battery control unit specifies a lowest temperature unit in which the temperature is lowest and a highest temperature unit in which the temperature is highest, on the basis of the temperatures measured by the temperature measurement unit, when the charge of the battery unit is performed or the discharge of the battery unit is performed, continues the charge or the discharge as it is when a first condition in which a temperature difference between the highest temperature unit and the lowest temperature unit is equal to or greater than a reference value is not satisfied, and outputs a first signal when the temperature difference satisfies the first condition.
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21. An electronic device comprising:
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a battery pack including a plurality of battery units which are connected in series to each other; a temperature measurement unit that measures temperatures of two or more battery units; a battery control unit that controls discharge of the battery units on the basis of the temperatures measured by the temperature measurement unit; a load that consumes power of the discharge from the battery pack; and a load control unit, connected to the battery control unit, which controls the load, wherein the battery control unit specifies a lowest temperature unit in which the temperature is lowest and a highest temperature unit in which the temperature is highest, on the basis of the temperatures measured by the temperature measurement unit, when the discharge of the battery unit is performed, continues the charge or the discharge as it is when a first condition in which a temperature difference between the highest temperature unit and the lowest temperature unit is equal to or greater than a reference value is not satisfied, and outputs a first signal when the temperature difference satisfies the first condition, and the load control unit reduces a current in the discharge when the first signal is received from the battery control unit. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A charger comprising:
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a temperature measurement unit that measures temperatures of two or more battery units of a plurality of battery units which are connected in series to each other; a battery control unit that controls charge of the battery units on the basis of the temperatures measured by the temperature measurement unit; and a charge control unit, connected to the battery control unit, which controls a voltage and a current in the charge, wherein the battery control unit specifies a lowest temperature unit in which the temperature is lowest and a highest temperature unit in which the temperature is highest, on the basis of the temperatures measured by the temperature measurement unit, when the charge of the battery unit is performed, continues the charge or the discharge as it is when a first condition in which a temperature difference between the highest temperature unit and the lowest temperature unit is equal to or greater than a reference value is not satisfied, and outputs a first signal when the temperature difference satisfies the first condition, and the charge control unit reduces the current in the charge when the first signal is received from the battery control unit. - View Dependent Claims (32)
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Specification