TWI578595B - Battery device and thermal control method thereof - Google Patents

Description

Battery device and temperature control method thereof

The invention relates to a rechargeable battery, in particular to a battery device capable of temperature equalization and a temperature control method thereof.

A typical battery device includes a housing and a plurality of battery cells housed in the housing. When the battery core is charged or discharged, thermal energy is generated. If the battery core is too hot, the charging or discharging efficiency is lowered. In order to avoid overheating of the battery core, the general design will install a heat dissipation module on the outer casing to cool the battery core, or a metal outer casing to increase heat dissipation efficiency.

In addition to high temperature, there are also temperature unevenness of the cell core, especially when multiple battery cells are electrically connected to the same circuit. If the temperature inside the case is not uniform, the operating efficiency of each cell core Inevitably uneven, the overall efficiency of its work has dropped significantly. When the temperature is uneven, the temperature unevenness is more affected, and the degree of influence is more than the high temperature.

However, all the heat dissipation mechanisms are driven by the temperature difference (temperature gradient), so the use of heat dissipation means inevitably causes a temperature difference in the casing and the charging efficiency of the battery device is low.

In view of the above, the inventors of the present invention have made great efforts to solve the above problems in view of the above-mentioned prior art, and have made great efforts to solve the above problems, which has become the object of improvement of the present inventors.

The invention provides a battery device capable of temperature-temperature charging and a temperature control method thereof.

The present invention provides a temperature control method for a battery device, comprising the steps of: providing a battery device and a heat transfer module, the battery device comprising a heat insulating box and a plurality of battery cells housed in the heat insulating box, the battery core Electrically connecting at least one electrical connector to be charged or discharged through the electrical connector. It is judged whether the battery core is discharged through the electrical connector. When the battery core is discharged through the electrical connector, the heat transfer module is kept closed and the heat insulating box body is in an even temperature state. Determine whether the battery core is charged through the electrical connector, and when the battery core is charged through the electrical connector, the heat transfer module is activated.

Preferably, the heat insulating box has an air inlet and an air outlet, and the heat transfer module includes a plurality of fans respectively disposed at the air inlet and the air outlet. When the heat transfer module is activated, the fan located at the air inlet blows ambient air into the heat insulating box through the air inlet, and the fan located at the air outlet discharges the air in the heat insulating box out of the heat insulating box. The air inlet and the air outlet are respectively located on opposite sides of the heat insulating box body, and the battery cells are stacked and arranged between the air inlet and the air outlet, and the air in the heat insulating box is guided by the fan through the air cells and reaches the air inlet. Air outlet.

Preferably, the heat transfer module comprises a thermoelectric chip, wherein the two sides of the thermoelectric chip are an inner side surface and an outer side surface, the inner side surface is exposed in the heat insulating box body, the outer side surface is insulated outside the box, and the thermoelectric chip is electrically connected. At least one of the battery cells. When the heat transfer module is activated, the battery core supplies power to the thermoelectric wafer so that the thermoelectric wafer transfers thermal energy from the inner side to the outer side to discharge the heat insulating box.

Preferably, the temperature control method of the battery device further comprises: when the battery core is not charged or discharged through the electrical connector, determining whether the heat insulating box body is lower than the minimum operating temperature of the battery core, and when the heat insulating box body is lower than the battery The minimum operating temperature of the core, the battery core supplies power to the thermoelectric wafer such that the thermoelectric wafer transfers thermal energy from the outer side to the inner side to maintain the thermal insulator within the operating temperature range of the cell.

Preferably, the battery device further comprises a control module, and the control module is electrically connected to the heat transfer module, and when the battery core is discharged, the heat transfer module is activated by the control module.

The invention further provides a battery device comprising a heat insulating box body, a plurality of battery cells, a heat transfer module and a control module. The battery core is housed in the heat insulating box, and the battery core is electrically connected to an electrical connector to be charged or discharged through the electrical connector. The heat transfer module is disposed in the heat insulating box. The control module is electrically connected to the heat transfer module. When the battery core is charged through the electrical connector, the heat transfer module remains closed, and when the battery core is discharged, the control module activates the heat transfer module.

Preferably, the heat insulating box has an air inlet and an air outlet, and the heat transfer module includes a plurality of fans respectively disposed at the air inlet and the air outlet. When the heat transfer module is activated, the fan located at the air inlet blows ambient air into the heat insulating box through the air inlet, and the fan located at the air outlet discharges the air in the heat insulating box out of the heat insulating box. The air inlet and the air outlet are respectively located on opposite sides of the heat insulating box body, and the battery cells are stacked and arranged between the air inlet and the air outlet.

Preferably, the heat transfer module comprises a thermoelectric chip, wherein the two sides of the thermoelectric chip are an inner side surface and an outer side surface, the inner side surface is exposed in the heat insulating box body, the outer side surface is insulated outside the box, and the thermoelectric chip is electrically connected. At least one of the control module and the battery core.

Preferably, the control module includes a switch for turning the heat transfer module on or off.

The battery device of the present invention and the temperature control method thereof can maintain the temperature in the heat insulating casing while the battery cell is being charged to ensure that the respective battery cells are in the same working environment. Therefore, the life of the battery core can be extended.

A first embodiment of the present invention provides a battery device and a temperature control method thereof. The temperature control method of the battery device of the present invention is as shown in Fig. 1, and includes the steps described later:

In the step a, a battery device is first provided. The battery device is as shown in FIG. 2. The battery device includes a heat insulating box 100, a plurality of battery cells 200, a heat transfer module 300, and a control module 400. In this embodiment, the heat insulating box body 100 defines an air inlet 101 and an air outlet 102. The air inlet 101 and the air outlet 102 are respectively located at two sides of the pair of the heat insulating box 100, the air inlet 101 and the air outlet 102. The air inlet 101 and the air outlet 102 are preferably openable and closable in the present embodiment, but the present invention does not use the valve or the gate (not shown). Limited. The battery cells 200 are housed in the heat insulating box 100, and the battery cells 200 are stacked and arranged between the air inlet 101 and the air outlet 102. The heat transfer module 300 is disposed in the heat insulating box 100. In the embodiment, the heat transfer module 300 includes a plurality of fans 311/312 respectively disposed at the air inlet 101 and the air outlet 102. The control module 400 is disposed on a circuit board, and the circuit board is disposed in the heat insulating box 100. In this embodiment, the control module 400 is electrically connected to the heat transfer module 300 and the battery cells 200, and the control module is The group 400 is preferably also electrically connectable to the air inlet 101 and the valve or gate of the air outlet 102. The control module 400 includes a pair of connectors that expose the heat insulating box 100 and the pair of connectors are electrically connected to the battery cells 200 through separate circuits. The pair of connectors are respectively a charging connector 411 and a discharging connector 412. The battery cells 200 are electrically connected to the pair of electrical connectors 410 through the control module 400 and can be charged through the charging connector 411 or through the discharging connector. 412 discharge. The charging connector 411 is electrically connected to the heat transfer module 300 through the control module 400; the discharge connector 412 is not electrically connected to the heat transfer module 300.

Referring to FIG. 1, in step b, it is determined whether the battery cells 200 are discharged through the electrical connector 410. When the battery cells 200 are discharged through the electrical connector 410, step b1 is performed to keep the heat transfer module 300 closed. The air inlet 101 and the air outlet 102 are in an even temperature state in the heat insulating box 100. Referring to FIG. 2, in the embodiment, the means for determining is as follows. When the battery cells 200 are discharged through the discharge connector 412, the external load is connected to the discharge connector 412 so that the heat transfer module 300 is not turned on and remains closed. And the control module 400 closes the air inlet 101 and the valve or gate of the air outlet 102. Thereby, the inside of the heat insulating casing 100 is insulated from the external environment, so that there is no temperature gradient in the heat insulating casing, and it is possible to ensure that the respective battery cells 200 are discharged at the same temperature.

Referring to FIG. 1, in step c, it is determined whether the battery cells 200 are charged by the electrical connector 410. Referring to FIG. 2, the judging means is known by judging whether or not the charging connector 411 is connected to an external power source.

In the step d, the heat transfer module 300 is activated when the battery cells 200 are charged by the electrical connector 410. Referring to FIG. 2, wherein the means is as described later, when the battery cells 200 are charged, the external power source is connected to the charging connector 411 to cause a voltage difference between the battery cells 200 and the external load to drive the external load to charge the battery cells 200, thereby making the control mode The group 400 can know that the battery cells 200 are charged by the charging connector 411. The external power source can be powered by the control module 400 to the heat transfer module 300 to activate the heat transfer module 300, and the control module 400 opens the air inlet 101 and the valve or gate of the air outlet 102. When the heat transfer module 300 is activated, the fan 311 located at the air inlet 101 blows ambient air into the heat insulating box 100 through the air inlet 101, and the air in the heat insulating box 100 is guided by the pair of fans 311/312. The air inlet 101 flows through the battery cells 200 for pad exchange, thereby taking away the heat energy generated by the battery core 200 and then reaching the air outlet 102. The fan 312 located at the air outlet 102 discharges the air in the heat insulating box 100 to the heat insulating box. The body 100 discharges thermal energy out of the insulating case 100, and adjusts the temperature of the battery cell 200 to the initial operating temperature.

Step e is followed by step b and step c. In step e, when the battery core 200 is not charged or discharged through the electrical connector 410, it is determined whether the inside of the heat insulating casing 100 is lower than the minimum operating temperature of the battery cells 200. It can be judged by the temperature sensor 430 in the control module 400 that the control module 400 can be activated by the battery core 200 to supply power.

Step f continues to step e. In step f, when the temperature inside the heat insulating casing 100 is lower than the minimum operating temperature at which the battery cells 200 are discharged, the hot air may be introduced into the heat insulating box from the outside by means of synchronously borrowing c. Body 100. Therefore, the inside of the heat insulating casing 100 can be maintained within the operating temperature range in which the battery cells 200 are discharged in an extremely low temperature environment. Moreover, when the battery core 200 is charged, the hot air can be introduced into the heat insulating box 100 to maintain the temperature inside the heat insulating box 100 within the operating temperature range of the battery core 200, and the temperature of the battery core 200 is adjusted. The starting working temperature.

A second embodiment of the present invention provides a battery device and a temperature control method thereof. The temperature control method of the battery device of the present invention is as shown in Fig. 1, and includes the steps described later:

In the step a, a battery device is first provided. The battery device is as shown in FIG. 4. The battery device includes a heat insulating box 100, a plurality of battery cells 200, a heat transfer module 300, and a control module 400. In this embodiment, the heat insulating box body 100 defines an air inlet 101 and an air outlet 102. The air inlet 101 and the air outlet 102 are respectively located at two sides of the pair of the heat insulating box 100, the air inlet 101 and the air outlet 102. The air inlet 101 and the air outlet 102 are preferably openable and closable in the present embodiment, but the present invention does not use the valve or the gate (not shown). Limited. The battery cells 200 are housed in the heat insulating box 100, and the battery cells 200 are stacked and arranged between the air inlet 101 and the air outlet 102. The heat transfer module 300 is disposed in the heat insulating box 100. In the embodiment, the heat transfer module 300 includes a plurality of fans 311/312 respectively disposed at the air inlet 101 and the air outlet 102. The control module 400 is disposed on a circuit board, and the circuit board is disposed in the heat insulating box 100. In this embodiment, the control module 400 is electrically connected to the heat transfer module 300 and the battery cells 200, and the control module is The group 400 is preferably also electrically connectable to the air inlet 101 and the valve or gate of the air outlet 102. The control module 400 includes a connector that protrudes from the heat insulating case 100 and the battery cells 200 are electrically connected to the electrical connector 410 through the control module 400 to be charged or discharged through the electrical connector 410. The control module 400 also includes a switch 420 for turning the heat transfer module 300 on or off.

Referring to FIG. 1, in step b, it is determined whether the battery cells 200 are discharged through the electrical connector 410. When the battery cells 200 are discharged through the electrical connector 410, the step b1 is executed to keep the heat transfer module 300, the air inlet 101, and the air outlet 102 closed, so that the inside of the heat insulating box 100 is in an even temperature state. Referring to FIG. 4, when the user connects the external load to the electrical connector 410 to discharge the battery cell 200 through the electrical connector 410, the user can keep the heat transfer module 300 closed by cutting off the switch 420, and control the mode. Group 400 closes the air inlet 101 and the valve or gate of the air outlet 102. Thereby, the inside of the heat insulating casing 100 is insulated from the external environment, so that there is no temperature gradient in the heat insulating casing, and it is possible to ensure that the respective battery cells 200 are discharged at the same temperature.

Referring to FIG. 1, in step c, it is determined whether the battery cells 200 are charged by the electrical connector 410, and the step c is continued in the step d. When the battery cells 200 are charged through the electrical connector 410, the heat transfer is started. Module 300. Referring to FIG. 4, in the embodiment, when the user connects the external power source to the electrical connector 410 to charge the battery cells 200 through the electrical connector 410, the user can initiate the heat transfer by turning on the switch 420. The module 300, and the control module 400 opens the valve or gate of the air inlet 101 and the air outlet 102. When the heat transfer module 300 is activated, the fan 311 located at the air inlet 101 blows ambient air into the heat insulating box 100 through the air inlet 101, and the air in the heat insulating box 100 is guided by the pair of fans 311/312. The air inlet 101 flows through the battery cells 200 for pad exchange, thereby taking away the heat energy generated by the battery core 200 and then reaching the air outlet 102. The fan 312 located at the air outlet 102 discharges the air in the heat insulating box 100 to the heat insulating box. The body 100 discharges thermal energy out of the insulating case 100, and adjusts the temperature of the battery cell 200 to the initial operating temperature.

Step e is followed by step b and step c. In step e, when the battery core 200 is not charged or discharged through the electrical connector 410, it is determined whether the inside of the heat insulating casing 100 is lower than the minimum operating temperature of the battery cells 200. It can be judged by the temperature sensor 430 in the control module 400 that the control module 400 can be activated by the battery core 200 to supply power.

Step f continues to step e. In step f, when the temperature inside the heat insulating casing 100 is lower than the minimum operating temperature at which the battery cells 200 are discharged, the hot air may be introduced into the heat insulating box from the outside by means of synchronously borrowing c. Body 100. Therefore, the inside of the heat insulating casing 100 can be maintained within the operating temperature range in which the battery cells 200 are discharged in an extremely low temperature environment. Moreover, when the battery core 200 is charged, the hot air can be introduced into the heat insulating box 100 to maintain the temperature inside the heat insulating box 100 within the operating temperature range of the battery core 200, and the temperature of the battery core 200 is adjusted. The starting working temperature.

A third embodiment of the present invention provides a battery device and a temperature control method thereof. The temperature control method of the battery device of the present invention is as shown in Fig. 1, and includes the steps described later:

In the step a, a battery device is first provided. The battery device is as shown in FIG. 4. The battery device includes a heat insulating box 100, a plurality of battery cells 200, a heat transfer module 300, and a control module 400. In this embodiment, the heat insulating box body 100 defines an air inlet 101 and an air outlet 102. The air inlet 101 and the air outlet 102 are respectively located at two sides of the pair of the heat insulating box 100, the air inlet 101 and the air outlet 102. The air inlet 101 and the air outlet 102 are preferably openable and closable in the present embodiment, but the present invention does not use the valve or the gate (not shown). Limited. The battery cells 200 are housed in the heat insulating box 100, and the battery cells 200 are stacked and arranged between the air inlet 101 and the air outlet 102. The heat transfer module 300 is disposed in the heat insulating box 100. In the embodiment, the heat transfer module 300 includes a plurality of fans 311/312 respectively disposed at the air inlet 101 and the air outlet 102. The control module 400 is disposed on a circuit board, and the circuit board is disposed in the heat insulating box 100. In this embodiment, the control module 400 is electrically connected to the heat transfer module 300 and the battery cells 200, and the control module is The group 400 is preferably also electrically connectable to the air inlet 101 and the valve or gate of the air outlet 102. The control module 400 includes a connector that protrudes from the heat insulating case 100 and the battery cells 200 are electrically connected to the electrical connector 410 through the control module 400 to be charged or discharged through the electrical connector 410.

Referring to FIG. 1, in step b, it is determined whether the battery cells 200 are discharged through the electrical connector 410. When the battery cells 200 are discharged through the electrical connector 410, step b1 is performed to maintain the shutdown, the air inlet 101, and The air outlet 102 heats the module 300 to cause the inside of the heat insulating box 100 to be in a uniform temperature state. Referring to FIG. 4, in the embodiment, the determining means is as follows. When the battery cells 200 are discharged through the electrical connector 410, the control module 400 determines that the external load is connected to the electrical connector 410, and then controls. The module 400 is not activated to keep the heat transfer module 300 closed, and the control module 400 closes the air inlet 101 and the valve or gate of the air outlet 102. Thereby, the inside of the heat insulating casing 100 is insulated from the external environment, so that there is no temperature gradient in the heat insulating casing, and it is possible to ensure that the respective battery cells 200 are discharged at the same temperature.

Referring to FIG. 1, in step c, it is determined whether the battery cells 200 are charged by the electrical connector 410. Referring to FIG. 4, the determining means is known by the control module 400 determining whether the electrical connector 410 is connected to an external power source.

In the step d, when the battery cells 200 are charged by the electrical connector 410, the heat transfer module 300 is activated by external power supply. Referring to FIG. 4, wherein the means is as described later, when the battery cells 200 are charged, the external power source is connected to the electrical connector 410 to enable the control module 400 to know that the battery cells 200 are charged by the electrical connector 410. Therefore, the control module 400 allows the external power source to be powered by the control module 400 to the heat transfer module 300 to activate the heat transfer module 300, and the control module 400 opens the air inlet 101 and the valve or gate of the air outlet 102. When the heat transfer module 300 is activated, the fan 311 located at the air inlet 101 blows ambient air into the heat insulating box 100 through the air inlet 101, and the air in the heat insulating box 100 is guided by the pair of fans 311/312. The air inlet 101 flows through the battery cells 200 for pad exchange, thereby taking away the heat energy generated by the battery core 200 and then reaching the air outlet 102. The fan 312 located at the air outlet 102 discharges the air in the heat insulating box 100 to the heat insulating box. The body 100 discharges thermal energy out of the insulating case 100, and adjusts the temperature of the battery cell 200 to the initial operating temperature.

Step e is followed by step b and step c. In step e, when the battery core 200 is not charged or discharged through the electrical connector 410, it is determined whether the inside of the heat insulating casing 100 is lower than the minimum operating temperature of the battery cells 200. It can be judged by the temperature sensor 430 in the control module 400 that the control module 400 can be activated by the battery core 200 to supply power.

Step f continues to step e. In step f, when the temperature inside the heat insulating casing 100 is lower than the minimum operating temperature at which the battery cells 200 are discharged, the hot air may be introduced into the heat insulating box from the outside by means of synchronously borrowing c. Body 100. Therefore, the inside of the heat insulating casing 100 can be maintained within the operating temperature range in which the battery cells 200 are discharged in an extremely low temperature environment. Moreover, when the battery core 200 is charged, the hot air can be introduced into the heat insulating box 100 to maintain the temperature inside the heat insulating box 100 within the operating temperature range of the battery core 200, and the temperature of the battery core 200 is adjusted. The starting working temperature.

A fourth embodiment of the present invention provides a battery device and a temperature control method thereof. The temperature control method of the battery device of the present invention is as shown in Fig. 1, and includes the steps described later:

In the step a, a battery device is first provided. The battery device is as shown in FIG. 5. The battery device includes a heat insulating box 100, a plurality of battery cells 200, a heat transfer module 300, and a control module 400. In the embodiment, the heat insulating box 100 defines a through opening 103. The battery cell 200 is housed in the heat insulating case 100. In this embodiment, the heat transfer module 300 includes a thermoelectric chip 320. The two sides of the thermoelectric chip 320 are an inner side surface 321 and an outer side surface 322, respectively. The thermoelectric wafer 320 is disposed in the port 103 to expose the inner side surface 321 in the heat insulating box 100, the outer side surface 322 is outside the heat insulating body 100, and the thermoelectric chip 320 is electrically connected to at least one of the battery cells 200. Preferably, fins 331 / 332 may be respectively disposed on the inner side surface 321 and the outer side surface 322 to improve the heat transfer efficiency between the thermoelectric wafer 320 and the air. The control module 400 is disposed on a circuit board, and the circuit board is disposed in the heat insulating box 100. In this embodiment, the control module 400 is electrically connected to the heat transfer module 300 and the battery cores 200. The control module 400 includes a connector that protrudes from the heat insulating case 100 and the battery cells 200 are electrically connected to the electrical connector 410 through the control module 400 to be charged or discharged through the electrical connector 410. The control module 400 further includes a switch 420 for enabling or disabling the heat transfer module 300. The control module 400 can also optionally include a temperature sensor 430 located in the heat insulating box.

Referring to FIG. 1, in step b, it is determined whether the battery cells 200 are discharged through the electrical connector 410. When the battery cells 200 are discharged through the electrical connector 410, step b1 is performed to keep the heat transfer module 300 closed. The inside of the heat insulating casing 100 is in an even temperature state. Referring to FIG. 5, in the embodiment, when the user connects the external load to the electrical connector 410 to discharge the battery cells 200 through the electrical connector 410, the user can turn off the heat by turning off the switch 420. The transfer module 300 remains closed. Thereby, the inside of the heat insulating casing 100 is insulated from the external environment, so that there is no temperature gradient in the heat insulating casing, and it is possible to ensure that the respective battery cells 200 are discharged at the same temperature.

Referring to FIG. 1, in step c, it is determined whether the battery cells 200 are charged by the electrical connector 410. Referring to FIG. 5, the determining means is known by the control module 400 determining whether the electrical connector 410 is connected to an external power source.

In the step d, the heat transfer module 300 is activated when the battery cells 200 are charged by the electrical connector 410. Referring to FIG. 5, wherein the means is as described later, when the battery cells 200 are charged, the external power source is connected to the electrical connector 410 to enable the control module 400 to know that the battery cells 200 are charged by the electrical connector 410. Therefore, the control module 400 allows the external power source to be powered by the control module 400 to the heat transfer module 300 to activate the heat transfer module 300. When the heat transfer module 300 is activated, the battery core 200 supplies power to the thermoelectric chip 320, so that the thermoelectric wafer 320 transfers the thermal energy of the inner side surface 321 to the outer side surface 322 to discharge the heat insulating box 100, and adjusts the temperature of the battery core 200 to Starting operating temperature.

Referring to FIG. 1 and FIG. 5, in the present embodiment, the temperature control method of the battery device of the present invention may optionally further include step e and step f which will be described later.

Step e is followed by step b and step c. In step e, when the battery core 200 is not charged or discharged through the electrical connector 410, it is determined whether the inside of the heat insulating casing 100 is lower than the minimum operating temperature of the battery cells 200. It can be judged by the temperature sensor 430 in the control module 400 that the control module 400 can be activated by the battery core 200 to supply power.

Step f continues with step e. In step f, when the inner temperature of the heat insulating casing 100 is lower than the minimum operating temperature at which the battery cells 200 are discharged, the battery core 200 supplies power to the thermoelectric wafer 320 so that the thermoelectric wafer 320 has the outer side surface 322. The thermal energy is transferred to the inner side 321 . Therefore, the inside of the heat insulating casing 100 can be maintained within the operating temperature range in which the battery cells 200 are discharged in an extremely low temperature environment. Moreover, when the battery core 200 is charged, the heating thermoelectric wafer 320 can be simultaneously driven by the external power source to transfer the thermal energy of the outer side surface 322 to the inner side surface 321 to maintain the operating temperature range of the battery cells 200 in the thermal insulation box 100. Within the battery cell 200 temperature is adjusted to the initial operating temperature.

A fifth embodiment of the present invention provides a battery device and a temperature control method thereof. The temperature control method of the battery device of the present invention is as shown in Fig. 1, and includes the steps described later:

In the step a, a battery device is first provided. The battery device is as shown in FIG. 6. The battery device includes a heat insulating box 100, a plurality of battery cells 200, a heat transfer module 300, and a control module 400. In the embodiment, the heat insulating box 100 defines a through opening 103. The battery cell 200 is housed in the heat insulating case 100. In this embodiment, the heat transfer module 300 includes a thermoelectric chip 320. The two sides of the thermoelectric chip 320 are an inner side surface 321 and an outer side surface 322, respectively. The thermoelectric wafer 320 is disposed in the port 103 to expose the inner side surface 321 in the heat insulating box 100, the outer side surface 322 is outside the heat insulating body 100, and the thermoelectric chip 320 is electrically connected to at least one of the battery cells 200. Preferably, fins 331 / 332 may be respectively disposed on the inner side surface 321 and the outer side surface 322 to improve the heat transfer efficiency between the thermoelectric wafer 320 and the air. The control module 400 is disposed on a circuit board, and the circuit board is disposed in the heat insulating box 100. In this embodiment, the control module 400 is electrically connected to the heat transfer module 300 and the battery cores 200. The control module 400 includes a connector that protrudes from the heat insulating case 100 and the battery cells 200 are electrically connected to the electrical connector 410 through the control module 400 to be charged or discharged through the electrical connector 410. The control module 400 can also optionally include a temperature sensor 430 located in the thermal insulation box.

Referring to FIG. 1, in step b, it is determined whether the battery cells 200 are discharged through the electrical connector 410. When the battery cells 200 are discharged through the electrical connector 410, step b1 is performed to keep the heat transfer module 300 closed. The inside of the heat insulating casing 100 is in an even temperature state. Referring to FIG. 6, the means for determining is as follows. When the battery cells 200 are discharged through the electrical connector 410, the control module 400 determines that the external load is connected to the electrical connector 410, and the control module 400 does not operate. The heat transfer module 300 is kept closed. Thereby, the inside of the heat insulating casing 100 is insulated from the external environment, so that there is no temperature gradient in the heat insulating casing, and it is possible to ensure that the respective battery cells 200 are discharged at the same temperature.

Referring to FIG. 1, in step c, it is determined whether the battery cells 200 are charged by the electrical connector 410. In the step d, the heat transfer module 300 is activated when the battery cells 200 are charged by the electrical connector 410. Referring to FIG. 6, the determining means is known by the control module 400 determining whether the electrical connector 410 is connected to an external power source. When the heat transfer module 300 is activated, the battery core 200 supplies power to the thermoelectric chip 320, so that the thermoelectric wafer 320 transfers the thermal energy of the inner side surface 321 to the outer side surface 322 to discharge the heat insulating box 100, and adjusts the temperature of the battery core 200 to Starting operating temperature.

Referring to FIG. 1 and FIG. 6, in the present embodiment, the temperature control method of the battery device of the present invention may optionally further include steps e and f described later.

Step e is followed by step b and step c. In step e, when the battery core 200 is not charged or discharged through the electrical connector 410, it is determined whether the inside of the heat insulating casing 100 is lower than the minimum operating temperature of the battery cells 200. It can be judged by the temperature sensor 430 in the control module 400 that the control module 400 can be activated by the battery core 200 to supply power.

Step f continues with step e. In step f, when the inner temperature of the heat insulating casing 100 is lower than the minimum operating temperature of the battery cells 200, the battery core 200 supplies power to the thermoelectric wafer 320 so that the thermoelectric wafer 320 will have the outer side surface 322. Thermal energy is transferred to the inner side 321 . Therefore, in the extremely low temperature environment, the inside of the heat insulating casing 100 can be maintained within the operating temperature range of the battery cells 200, and the temperature of the battery core 200 can be adjusted to the initial operating temperature.

In summary, the battery device of the present invention and the temperature control method thereof can maintain the temperature within the heat insulating casing 100 while the battery cell 200 is being charged to ensure that the battery cells 200 are in the same working environment. Therefore, the charging unevenness is avoided, and the charging and discharging efficiency of the battery cell 200 can be improved, and the life of the battery core 200 can be prolonged.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and other equivalent variations of the patent spirit of the present invention are all within the scope of the invention.

100‧‧‧Insulation box

101‧‧‧air inlet

102‧‧‧air outlet

103‧‧‧ mouth

200‧‧‧ battery core

300‧‧‧heat transfer module

311/312‧‧‧fan

320‧‧‧Thermal chip

321‧‧‧ inside

322‧‧‧Outside

331/332‧‧‧Fins

400‧‧‧Control Module

410‧‧‧Electrical connector

411‧‧‧Charging connector

412‧‧‧Discharge connector

420‧‧‧Toggle switch

430‧‧‧temperature sensor

a~f‧‧‧step

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart showing the temperature control method used in the battery device of the present invention.

Fig. 2 is a schematic view showing a battery device of a first embodiment of the present invention.

Fig. 3 is a schematic view showing a battery device of a second embodiment of the present invention.

Fig. 4 is a schematic view showing a battery device of a third embodiment of the present invention.

Fig. 5 is a schematic view showing a battery device of a fourth embodiment of the present invention.

Figure 6 is a schematic view showing a battery device of a fifth embodiment of the present invention.

a~d‧‧‧step

Claims (14)

A temperature control method for a battery device, comprising: a) providing a battery device and a heat transfer module, the battery device comprising a heat insulating box body and a plurality of battery cells housed in the heat insulating box, the battery cores Electrically connecting at least one electrical connector to be charged or discharged through the electrical connector; and b) determining whether the battery cells are discharged through the electrical connector; b1) when the battery cells are discharged through the electrical connector Keeping the heat transfer module closed to make the heat insulation box have an average temperature state; c) determining whether the battery cells are charged through the electrical connector; and d) starting when the battery cells are charged through the electrical connector The heat transfer module. The temperature control method of the battery device of claim 1, wherein the heat insulating box has an air inlet and an air outlet, and the heat transfer module includes a plurality of fans respectively disposed at the air inlet and the air outlet. The temperature control method of the battery device of claim 2, wherein when the heat transfer module is activated, the fan located at the air inlet blows ambient air into the heat insulating box through the air inlet, and is located at the outlet The fan of the tuyere discharges the air inside the heat insulating box out of the heat insulating box. The temperature control method of the battery device of claim 3, wherein the air inlet and the air outlet are respectively located on opposite sides of the heat insulating box, and the battery cells are stacked between the air inlet and the air outlet. The fan guides the air in the heat insulating box from the air inlet through each of the battery cells and reaches the air outlet. The method of controlling the temperature of the battery device of claim 1, wherein the heat transfer module comprises a thermoelectric chip, the two sides of which are respectively an inner side surface and an outer side surface, the inner side surface being exposed in the heat insulating box In the body, the outer side surface is exposed outside the heat insulating box, and the thermoelectric chip is electrically connected to at least one of the battery cells. The temperature control method of the battery device according to claim 5, wherein when the heat transfer module is activated, the battery core supplies power to the thermoelectric chip to cause the thermoelectric wafer to transfer thermal energy of the inner side to the outer side to be discharged. The insulation box. The temperature control method of the battery device according to claim 5, further comprising a step e of following the step b and the step c: determining whether the heat insulating box is low when the battery core is not charged or discharged through the electrical connector The minimum operating temperature of the battery cells, and a step f of the subsequent step e: when the thermal insulation box is lower than the minimum operating temperature of the battery cells, the battery core supplies the thermoelectric wafer so that the thermoelectric wafer will The thermal energy of the outer side is transferred to the inner side to maintain the thermal insulation box within the operating temperature range of the battery cells. The temperature control method of the battery device of claim 1, wherein the battery device further comprises a control module, and the control module is electrically connected to the heat transfer module, and when the battery cells are charged in step c The heat transfer module is activated by the control module. A battery device comprising: a heat insulating box; a plurality of battery cells housed in the heat insulating box, and the battery cells are electrically connected to an electrical connector to be charged or discharged through the electrical connector; And a control module electrically connected to the heat transfer module; wherein, when the battery cells are discharged through the electrical connector, the heat transfer module remains closed, when the battery cells are charged, The control module activates the heat transfer module. The battery device of claim 9, wherein the heat insulating box has an air inlet and an air outlet, and the heat transfer module includes a plurality of fans respectively disposed at the air inlet and the air outlet. The battery device of claim 10, wherein when the heat transfer module is activated, the fan located at the air inlet blows ambient air into the heat insulating box through the air inlet, and the fan located at the air outlet The air inside the heat insulating box is discharged from the heat insulating box. The battery device of claim 10, wherein the air inlet and the air outlet are respectively located on opposite sides of the heat insulating box, and the battery cores are stacked between the air inlet and the air outlet. The battery device of claim 9, wherein the heat transfer module comprises a thermoelectric chip, the two sides of which are an inner side surface and an outer side surface, respectively, the inner side surface is exposed in the heat insulating box body, the outer side The side surface is exposed outside the heat insulating box, and the thermoelectric chip is electrically connected to the control module and at least one of the battery cells. The battery device of claim 9, wherein the control module includes a switch for enabling or disabling the heat transfer module.