Battery warm up system and method for warming up battery using the same
First Claim
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1. A battery warm up system, comprising:
- an open signal receiving unit to receive a door open signal for opening a door of a vehicle;
a temperature measuring unit to measure a temperature of a battery pack connected to a starter of the vehicle;
a battery state measuring unit to measure a state of charge (SOC) of each of a plurality of battery modules constituting the battery pack;
a control unit to output a forced discharging start signal to create an SOC difference between a plurality of battery modules by referring to information associated with the temperature measured by the temperature measuring unit when the door open signal is received by the open signal receiving unit, and output a balancing start signal by referring to the SOC of each of the plurality of battery modules;
a forced discharging circuit to force at least one battery module but less than all battery modules among the plurality of battery modules to transmit current through a resistor in the forced discharging circuit in response to the forced discharging start signal to create the SOC difference between the plurality of battery modules; and
a balancing unit to balance the SOC of each battery module in response to the balancing start signal,wherein the forced discharging circuit consists essentially of a switch and a resistor in parallel with each battery module, the switch being in series with the resistor.
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Abstract
A battery warm up system according to the present disclosure includes an open signal receiving unit to receive a door open signal for opening a door of a vehicle, a temperature measuring unit to measure a temperature of a battery pack connected to a starter of the vehicle, a control unit to output a forced discharging start signal by referring to information associated with the temperature measured by the temperature measuring unit when the door open signal is received by the open signal receiving unit, and a forced discharging circuit unit to force a plurality of battery modules constituting the battery pack to be discharged in response to the forced discharging start signal.
18 Citations
13 Claims
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1. A battery warm up system, comprising:
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an open signal receiving unit to receive a door open signal for opening a door of a vehicle; a temperature measuring unit to measure a temperature of a battery pack connected to a starter of the vehicle; a battery state measuring unit to measure a state of charge (SOC) of each of a plurality of battery modules constituting the battery pack; a control unit to output a forced discharging start signal to create an SOC difference between a plurality of battery modules by referring to information associated with the temperature measured by the temperature measuring unit when the door open signal is received by the open signal receiving unit, and output a balancing start signal by referring to the SOC of each of the plurality of battery modules; a forced discharging circuit to force at least one battery module but less than all battery modules among the plurality of battery modules to transmit current through a resistor in the forced discharging circuit in response to the forced discharging start signal to create the SOC difference between the plurality of battery modules; and a balancing unit to balance the SOC of each battery module in response to the balancing start signal, wherein the forced discharging circuit consists essentially of a switch and a resistor in parallel with each battery module, the switch being in series with the resistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for warming up a battery, the method comprising:
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determining whether a door open signal for opening a door of a vehicle is received; comparing a temperature of a battery pack to a set first reference temperature; creating an SOC difference between a plurality of battery modules by outputting a forced discharging start signal when the door open signal is received and the temperature of the battery pack is lower than the first reference temperature by transmitting current from at least one battery module but less than all battery modules among the plurality of battery modules through a resistor in parallel with the at least one battery module in a forced discharging circuit provided for each battery module by closing a switch in series with the resistor; outputting a balancing start signal when an SOC between the plurality of battery modules constituting the battery pack becomes imbalanced due to discharging of a at least one battery module but less than all battery modules among the plurality of battery modules in response to the output of the balancing start signal. - View Dependent Claims (13)
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Specification