Battery temperature control system in electric automobile

A battery temperature control system in an electric automobile equipped with an air-heating device for supplying warm air into a passenger compartment, which automobile travels by using an electric motor as the driving force and a battery as an electric power source for the electric motor, comprising;

• a battery chamber separate and isolated from the passenger compartment with the battery mounted in said battery chamber,
• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air-heating device when the battery temperature detected by said battery temperature sensor is lower than a predetermined temperature, and
• a temperature-conditioned air intake port provided in said battery chamber and connected through a duct to said air-heating device for introducing warm air supplied from said air-heating device directly into said battery chamber and separately from the passenger compartment.

A battery temperature control system in an electric automobile equipped with an air conditioner for supplying cool or warm air into a passenger compartment, which automobile travels by using an electric motor as the driving force and a battery as an electric power source for the electric motor, comprising;

• a battery chamber separate and isolated from the passenger compartment with the battery mounted in said battery chamber,
• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air conditioner in an air-cooling mode when the battery temperature detected by said temperature sensor is higher than a predetermined upper limit, and in an air-heating mode when the battery temperature detected by said temperature sensor is lower than a predetermined lower limit, and
• a temperature-conditioned air intake port provided in said battery chamber and connected through a duct to said air conditioner for introducing an air supplied from said air conditioner directly into said battery chamber and separately from the passenger compartment.

A battery temperature control system in an electric automobile equipped with an air conditioner for supplying cool or warm air into a passenger compartment, which automobile travels by using a battery as a power source accommodated in a battery chamber, comprising;

• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air conditioner in an air-cooling mode when the battery temperature detected by said temperature sensor is higher than a predetermined upper limit, and in an air-heating mode when the battery temperature detected by said temperature sensor is lower than a predetermined lower limit,
• a temperature-conditioned air intake port provided in said battery chamber for introducing an air supplied from said air conditioner into said battery chamber,
• a charge judging means for judging whether said battery is being charged, and wherein
• said control unit is designed to generate a signal indicative of a command to increase an electric charging power of a charger for charging the battery when it is judged by the charge judging means that the battery is being charged and said air conditioner is driven.

A battery temperature control system in an electric automobile equipped with an air conditioner for supplying cool or warm air into a passenger compartment, which automobile travels by using an electric motor as the driving force and a battery as an electric power source for the electric motor, comprising;

• a battery chamber separate and isolated from the passenger compartment with the battery mounted in said battery chamber,
• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air conditioner in an air-cooling mode when the battery temperature detected by said temperature sensor is higher than a predetermined upper limit, and in an air-heating mode when the battery temperature detected by said temperature sensor is lower than a predetermined lower limit,
• a temperature-conditioned air intake port provided in said battery chamber for introducing an air supplied from said air conditioner directly into said battery chamber and separately from the passenger compartment, and wherein
• said air conditioner includes a heat pump type air conditioner, and
• said system further includes an auxiliary heater for heating the air supplied from said air conditioner when the temperature of the outside air is lower than a predetermined temperature.

A battery temperature control system in an electric automobile having an air conditioner for supplying cool or warm air into a passenger compartment and a battery in a battery chamber as a power source for the automobile, comprising;

• means for determining the temperature of said battery,
• means for selectively supplying to said battery chamber from said air conditioner cool air when the battery temperature is higher than a predetermined upper limit and warm air when the battery temperature is lower than a predetermined lower limit,
• means for determining when said battery is being charged, and
• means for causing an increase in an electric charging power of a charger or charging the battery when it is determined that the battery is being charged and said air conditioner is operated.

A battery temperature control system in an electric automobile having an air conditioner for supplying cool or warm air into a passenger compartment and a battery in a battery chamber as a power source for the automobile, comprising;

• means for determining the temperature of said battery, and
• means for selectively supplying, directly to said battery chamber from said air conditioner, cool air when the battery temperature is higher than a predetermined upper limit and warm air when the battery temperature is lower than a predetermined lower limit,
• wherein means are provided for presetting a departure time for the automobile and causing operation of said air conditioner before said departure time for selectively cooling and heating the passenger compartment, and
• wherein said means for presetting a departure time includes means changing at least one of said predetermined limit temperatures for operating the air conditioner for cooling or heating the battery chamber within a predetermined time period at least one of either before or after said preset departure time.

A battery temperature control system in an electric automobile equipped with an air-cooling device for supplying cool air into a passenger compartment which automobile travels by using a battery as a power source accommodated in a battery chamber, comprising;

• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air-cooling device when the battery temperature detected by said battery temperature sensor is higher than a predetermined temperature, and
• a temperature-conditioned air intake port provided in said battery chamber and connected through a duct to said air-cooling device for introducing cool air supplied from said air-cooling device directly into said battery chamber,
• wherein means are provided for detecting a value of at least one of ambient temperature of air outside the automobile, Hydrogen concentration in the battery chamber, carbon monoxide in air outside the automobile, electric current supplied by a charger during charging of the battery, voltage of the battery, electric current being used from the battery and connection of a charger to the battery, and selectively operating said air conditioner in response to each said detected value.

A battery temperature control system in an electric automobile having an air conditioner for supplying cool or warm air into a passenger compartment, which automobile travels by using an electric motor as the motive force and a battery as an electric power source for the electric motor, comprising;

• a battery chamber separate and isolated from the passenger compartment with the battery mounted in said battery chamber,
• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air conditioner in an air-cooling mode when the battery temperature detected by said temperature sensor is higher than a predetermined upper limit, and in an air-heating mode when the battery temperature detected by said temperature sensor is lower than a predetermined lower limit,
• a temperature-conditioned air intake port provided in said battery chamber and connected through a duct to said air conditioner for introducing an air supplied from said air conditioner directly into said battery chamber and separately from the passenger compartment, and wherein
• means are provided for determining when the passenger compartment requires cooling and heating and simultaneously providing either cool air or warm air to both the passenger compartment and the battery chamber when both require cool air or both require warm air.

A battery temperature control system in an electric automobile having an air conditioner for supplying cool or warm air into a passenger compartment, which automobile travels by using an electric motor as the motive force and a battery as an electric power source for the electric motor, comprising;

• a battery chamber separate and isolated from the passenger compartment with the battery mounted in said battery chamber,
• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air conditioner in an air-cooling mode when the battery temperature detected by said temperature sensor is higher than a predetermined upper limit, and in an air-heating mode when the battery temperature detected by said temperature sensor is lower than a predetermined lower limit,
• a temperature-conditioned air intake port provided in said battery chamber and connected through a duct to the air conditioner for introducing an air supplied from said air conditioner directly into said battery chamber and separately from the passenger compartment, and wherein
• presetting means are provided for presetting a departure time for the automobile and causing operation of said air conditioner before said departure time for selectively cooling and heating the passenger compartment.

A battery temperature control system in an electric automobile equipped with an air conditioner for supplying cool or warm air into a passenger compartment, which automobile travels by using a battery as a power source accommodated in a battery chamber, comprising;

• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air conditioner in an air-cooling mode when the battery temperature detected by said temperature sensor is higher than a predetermined upper limit, and in an air-heating mode when the battery temperature detected by said temperature sensor is lower than a predetermined lower limit,
• a temperature-conditioned air intake port provided in said battery chamber for introducing an air supplied from said air conditioner into said battery chamber,
• wherein presetting means are provided for presetting a departure time for the automobile and causing operation of said air conditioner before said departure time for selectively cooling and heating the passenger compartment, and
• wherein said presetting means includes means changing at least one of said predetermined limit temperatures for operating the air conditioner for cooling or heating the battery chamber within a predetermined time period at least one of either before or after said preset departure time.

A battery temperature control system in an electric automobile equipped with an air-heating device for supplying warm air into a passenger compartment, which automobile travels by using a battery as a power source accommodated in a battery chamber, comprising;

• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air-heating device when the battery temperature detected by said battery temperature sensor is lower than a predetermined temperature, and
• a temperature-conditioned air intake port provided in said battery chamber and connected through a duct to said air-heating device for introducing warm air supplied from said air-heating device directly into said battery chamber,
• wherein means are provided for detecting a value of at least one of ambient temperature of air outside the automobile, Hydrogen concentration in the battery chamber, carbon monoxide in air outside the automobile, electric current supplied by a charger during charging of the battery, voltage of the battery, electric current being used from the battery and connection of a charger to the battery, and selectively operating said air conditioner in response to each said detected value.

A battery temperature control system in an electric automobile equipped with an air conditioner for supplying cool or warm air into a passenger compartment which automobile travels by using a battery as a power source accommodated in a battery chamber, comprising;

• a battery temperature sensor for detecting a temperature of said battery,
• a control unit for driving said air conditioner in an air-cooling mode when the battery temperature detected by said temperature sensor is higher than a predetermined upper limit, and in an air-heating mode when the battery temperature detected by said temperature sensor is lower than a predetermined lower limit, and
• a temperature-conditioned air intake port provided in said battery chamber and connected through a duct to said air conditioner for introducing an air supplied from said air conditioner directly into said battery chamber,
• wherein means are provided for detecting a value of at least one of ambient temperature of air outside the automobile, Hydrogen concentration in the battery chamber, carbon monoxide in air outside the automobile, electric current supplied by a charger during charging of the battery, voltage of the battery, electric current being used from the battery and connection of a charger to the battery, and selectively operating said air conditioner in response to each said detected value.