Temperature/voltage detecting unit and battery element unit
First Claim
1. A temperature and voltage detecting unit for detecting the temperature and voltage of each of a plurality of battery elements connected in series that constitute a heavy electric system power supply for an electric car, the temperature and voltage detecting unit comprising:
- a temperature detector for detecting a temperature of a corresponding battery element when a voltage from a light electric system power supply is being applied; and
a voltage detector for inputting a signal to show whether or not the voltage from the light electric system power supply is being applied to the temperature detector, and, only when the voltage from the light electric system power supply is being applied, for detecting a terminal voltage of the corresponding battery element in a state electrically insulated from the signal.
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Accused Products
Abstract
A temperature/voltage detecting unit has a temperature detector and a voltage detector. The temperature detector has a light electric system stabilized power supply for stabilizing a light electric system power supply voltage, a temperature resistance element provided close to a corresponding battery element, for changing its resistance value based on a change in temperature, and a voltage-to-frequency converter operating based on a voltage from the light electric system stabilized power supply, for detecting a terminal voltage of the temperature resistance element to which a constant current flows from the light electric system stabilized power supply, converting this value into frequency information and outputting the frequency information. The voltage detector has a heavy electric system stabilized power supply for stabilizing a voltage supplied from the corresponding battery element, a voltage supply control section for inputting a signal to show whether or not the light electric system power supply voltage is being applied to the temperature detector, and, when this voltage is being supplied, for applying a voltage from the corresponding battery element to the heavy electric system stabilized power supply, and a voltage-to-frequency converter operating based on a voltage from the light electric system stabilized power supply, for detecting a terminal voltage of the corresponding battery element, converting this value into frequency information and outputting the frequency information.
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Citations
9 Claims
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1. A temperature and voltage detecting unit for detecting the temperature and voltage of each of a plurality of battery elements connected in series that constitute a heavy electric system power supply for an electric car, the temperature and voltage detecting unit comprising:
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a temperature detector for detecting a temperature of a corresponding battery element when a voltage from a light electric system power supply is being applied; and
a voltage detector for inputting a signal to show whether or not the voltage from the light electric system power supply is being applied to the temperature detector, and, only when the voltage from the light electric system power supply is being applied, for detecting a terminal voltage of the corresponding battery element in a state electrically insulated from the signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
a light electric system stabilized power supply for stabilizing the light electric system power supply voltage;
a temperature resistance element provided close to a corresponding battery element, for changing a resistance value thereof based on a change in the temperature of the battery element; and
a resistance terminal voltage detector operating based on a voltage from the light electric system stabilized power supply, for detecting a terminal voltage of the temperature resistance element to which a constant current flows from the light electric system stabilized power supply.
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3. The temperature and voltage detecting unit according to claim 2, wherein the temperature detector further comprises a voltage-to-frequency converter for converting a value of the terminal voltage detected by the resistance terminal voltage detector into frequency information and outputting the frequency information.
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4. The temperature and voltage detecting unit according to claim 1, wherein the voltage detector comprises:
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a heavy electric system stabilized power supply for stabilizing a voltage supplied from a corresponding battery element;
a voltage supply control section for inputting a signal to show whether or not the light electric system power supply voltage is being applied to the temperature detector, and, when the light electric system power supply voltage is being supplied, for applying the voltage from the corresponding battery element to the heavy electric system stabilized power supply; and
a battery element terminal voltage detector operating based on a voltage from the light electric system stabilized power supply, for detecting the terminal voltage of the corresponding battery element.
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5. The temperature and voltage detecting unit according to claim 4, wherein the voltage detector further comprises a voltage-to-frequency converter for converting a value of the terminal voltage detected by the battery element terminal voltage detector into frequency information and outputting the frequency information.
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6. The temperature and voltage detecting unit according to claim 4, wherein the voltage supply control section comprises:
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a light-emitting diode for inputting a signal to show whether or not the light electric system power supply voltage is being applied to the temperature detector, and for emitting light or non-emitting light depending on whether or not the light electric system power supply voltage is being applied;
a photo-transistor for being turned on/off according to light emission/non-light emission of the light-emitting diode;
and a transistor for applying the voltage from the corresponding battery element to the heavy electric system stabilized power supply according to on/off of the phototransistor.
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7. A battery element unit, comprising:
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the temperature and voltage detecting unit according to claim 1; and
a battery element body having a groove for accommodating the temperature and voltage detecting unit on an external wall thereof.
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8. A battery element unit, comprising:
- the temperature and voltage detecting unit according to claim 2; and
a battery element body having a groove for accommodating the temperature and voltage detecting unit on an external wall thereof.
- the temperature and voltage detecting unit according to claim 2; and
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9. A battery element unit, comprising:
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the temperature and voltage detecting unit according to claim 4; and
a battery element body having a groove for accommodating the temperature and voltage detecting unit on an external wall thereof.
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Specification