JP2021175270A - Control device for charging device - Google Patents

Abstract

To prevent progress of deterioration of a battery.SOLUTION: A vehicle is equipped with a battery that is charged with an external power source disposed externally to the vehicle. A control device of the vehicle is equipped with an input limit power calculating unit that calculates an input limit power which is an upper limit value of a power to be inputted from the external power source to the battery. The control device of the vehicle is equipped with an actual charging power acquiring unit that acquires an actual charging power which is a value of power actually inputted from the external power source to the battery. The control device of the vehicle is equipped with a charge control unit that stops charging to the battery when an excess power amount which is a time integration value of a difference between the actual charging power and the input limit power during a time period in which the actual charging power is larger than the input limit power, is equal to or greater than a predetermined threshold.SELECTED DRAWING: Figure 2

Description

The present invention relates to a control device for a charging device.

The vehicle described in Patent Document 1 includes a battery charged by an external power source provided outside the vehicle. The vehicle control device calculates the input limit power, which is the upper limit of the power input to the battery from the external power source. The vehicle control device stops charging when charging is continued in a state where the actual charging power, which is the power value actually input to the battery from the external power source, exceeds the input limit power.

Japanese Unexamined Patent Publication No. 2012-130154

When the input limit power is a small value, for example, deterioration of the battery due to the occurrence of the precipitation phenomenon can be easily suppressed, but the actual charging power can be suppressed to a small value, so that the charging time of the battery becomes long. On the other hand, when the input limit power is a large value, the charging time of the battery becomes short. However, if the power supplied by the external power supply is not stable, the battery may deteriorate due to a temporary increase in the actual charging power. Therefore, in order to shorten the charging time of the battery while suppressing the deterioration of the battery, when the actual charging power temporarily exceeds the input limit power, the continuation of charging is allowed, and the actual charge power sets the input limit power. It is desirable to stop charging when the power is continuously exceeded.

However, even if the period from when the actual charging power exceeds the input limit power to when charging is stopped is the same, the susceptibility to deterioration of the battery is different. Therefore, it is required to suppress excessive deterioration of the battery during the period from when the actual charging power exceeds the input limit power to when charging is stopped.

The control device of the charging device for solving the above-mentioned problems is a control device for controlling a charging device including a battery charged by an external power source provided outside the charging device, and is input from the external power source to the battery. An input limit power calculation unit that calculates the input limit power that is the upper limit of the power to be output, and an actual charge power acquisition unit that acquires the actual charge power that is the value of the power actually input to the battery from the external power source. When the excess power amount, which is the time-integrated value of the difference between the actual charge power and the input limit power during the period when the actual charge power exceeds the input limit power, is equal to or more than a predetermined threshold value of the battery. It includes a charge control unit that stops charging.

The present inventor has confirmed that the larger the excess power amount, the more the deterioration of the battery progresses. According to the above configuration, since the excess power amount is limited so as not to exceed the threshold value, it is possible to suppress the deterioration of the battery.

Configuration diagram of vehicle and external power supply. The flowchart which shows the charge control executed by 1st Embodiment of a control device. Explanatory drawing which shows the relationship between the elapsed charge time and the actual charge power when charge control is executed. The flowchart which shows the charge control executed by the 2nd Embodiment of a control device. Explanatory drawing which shows the relationship between the elapsed charge time and the actual charge power when charge control is executed.

<First Embodiment>
Hereinafter, the first embodiment of the control device for controlling the charging device of the vehicle will be described with reference to FIGS. 1 to 3. First, the configuration of the vehicle 100 will be described.

As shown in FIG. 1, the vehicle 100 includes a spark-ignition type internal combustion engine 10. The vehicle 100 includes a first motor generator 71 and a second motor generator 72. The first motor generator 71 and the second motor generator 72 are motor generators having both functions of an electric motor and a generator. The vehicle 100 is a so-called hybrid vehicle including an internal combustion engine 10, a first motor generator 71, and a second motor generator 72 as drive sources.

The internal combustion engine 10 includes a crankshaft 12. The crankshaft 12 is connected to a piston arranged in a cylinder (not shown). The crankshaft 12 rotates due to combustion in the cylinder of the mixture of fuel and intake air.

The vehicle 100 includes a battery 75, a first inverter 76, and a second inverter 77. When the first motor generator 71 or the second motor generator 72 functions as a generator, the battery 75 stores the electric power generated by the first motor generator 71 or the second motor generator 72. The battery 75 supplies electric power to the first motor generator 71 and the second motor generator 72 when the first motor generator 71 and the second motor generator 72 function as electric motors.

The first inverter 76 adjusts the amount of electric power exchanged between the first motor generator 71 and the battery 75. The second inverter 77 adjusts the amount of electric power exchanged between the second motor generator 72 and the battery 75.

The vehicle 100 includes a first planetary gear mechanism 40, a ring gear shaft 45, a second planetary gear mechanism 50, a reduction mechanism 62, a differential mechanism 63, and a plurality of drive wheels 64.
The first planetary gear mechanism 40 includes a sun gear 41, a ring gear 42, a plurality of pinion gears 43, and a carrier 44. The sun gear 41 is an external gear. The sun gear 41 is connected to the first motor generator 71. The ring gear 42 is an internal gear and is arranged coaxially with the sun gear 41. A plurality of pinion gears 43 are arranged between the sun gear 41 and the ring gear 42. Each pinion gear 43 meshes with both the sun gear 41 and the ring gear 42. The carrier 44 supports the pinion gear 43 in a state where it can rotate and revolve freely. The carrier 44 is connected to the crankshaft 12.

The ring gear shaft 45 is connected to the ring gear 42. The reduction mechanism 62 is connected to the ring gear shaft 45. The speed reduction mechanism 62 is connected to the drive wheels 64 via the differential mechanism 63.

The second planetary gear mechanism 50 includes a sun gear 51, a ring gear 52, a plurality of pinion gears 53, a carrier 54, and a case 55. The sun gear 51 is an external gear. The sun gear 51 is connected to the second motor generator 72. The ring gear 52 is an internal gear and is arranged coaxially with the sun gear 51. The ring gear 52 is connected to the ring gear shaft 45. A plurality of pinion gears 53 are arranged between the sun gear 51 and the ring gear 52. Each pinion gear 53 meshes with both the sun gear 51 and the ring gear 52. The carrier 54 supports the pinion gear 53 in a state in which it can rotate freely. The carrier 54 is fixed to the case 55. Therefore, the pinion gear 53 is in a state where it cannot revolve.

The vehicle 100 includes a converter 78 and an inlet 79. The inlet 79 can be connected to an external power supply 500, which will be described later. The inlet 79 is electrically connected to the battery 75 via the converter 78. AC power is supplied to the inlet 79 from the external power source 500. The converter 78 converts the AC power supplied from the inlet 79 into DC power. The converter 78 supplies the converted DC power to the battery 75. As a result, the battery 75 is charged by the external power source 500.

The vehicle 100 includes a current sensor 87, a voltage sensor 88, and a temperature sensor 89. The current sensor 87 detects the current IB, which is the current input / output to / from the battery 75. The voltage sensor 88 detects the voltage VB, which is the voltage between the terminals of the battery 75. The temperature sensor 89 detects the battery temperature TB, which is the temperature of the battery 75. The temperature of the battery 75 is, for example, the temperature of the electrolytic solution of the battery 75 and the temperature of the container of the battery 75.

The vehicle 100 includes a control device 200. A signal indicating the current IB is input to the control device 200 from the current sensor 87. A signal indicating the voltage VB is input to the control device 200 from the voltage sensor 88. A signal indicating the battery temperature TB is input to the control device 200 from the temperature sensor 89.

The control device 200 calculates the charge rate SOC of the battery 75 based on the current IB, the voltage VB, and the battery temperature TB. The charge rate SOC increases as the voltage VB increases. The charge rate SOC is lower as the battery temperature TB is lower. The rate of increase of the charge rate SOC increases as the current IB input to the battery 75 increases. The rate of decrease in the charge rate SOC increases as the current IB output from the battery 75 increases.

The charge rate SOC is represented by the following formula (1).
Charge rate SOC [%] = Battery remaining capacity [Ah] / Battery full charge capacity [Ah] x 100 [%] ... (1)
The control device 200 includes a power limit calculation unit 210, an actual charge power acquisition unit 220, and a charge control unit 230. The charge control unit 230 controls charging of the battery 75 by the external power source 500, which will be described later.

The power limit calculation unit 210 calculates the input power limit Win based on the charge rate SOC and the battery temperature TB. The input limit power Win is an upper limit value of the power input to the battery 75 from the first motor generator 71, the second motor generator 72, and the external power source 500 described later. The input limit power Win is smaller as the charge rate SOC is higher. The input limit power Win becomes smaller when the charging of the battery 75 is started. The rate of decrease of the input limit power Win at that time becomes smaller as the elapsed time from the start of charging the battery 75 becomes longer. That is, the rate of decrease of the input limit power Win decreases as the charge rate SOC increases. Further, the input limit power Win is so small that the battery temperature TB deviates from a predetermined temperature range. The power limit calculation unit 210 functions as an input power limit calculation unit.

Further, the power limit calculation unit 210 calculates the output power limit Wout based on the charge rate SOC and the battery temperature TB. The output limit power Wout is an upper limit value of the power output from the battery 75 to the first motor generator 71 and the second motor generator 72. The output limit power Wout increases as the charge rate SOC increases. The output limit power Wout is so small that the battery temperature TB deviates from a predetermined predetermined temperature range.

The actual charging power acquisition unit 220 calculates the actual charging power CP based on the current IB and the voltage VB. The actual charging power CP is the value of the power actually input to the battery 75 from the first motor generator 71, the second motor generator 72, and the external power source 500 described later. The actual charge power CP increases as the current IB increases. The actual charging power CP increases as the voltage VB increases.

Next, the control of the vehicle 100 performed by the control device 200 will be described.
The control device 200 calculates a vehicle required output, which is a required value of the output required for the vehicle 100 to travel, based on the accelerator operation amount operated by the driver and the speed of the vehicle 100. The control device 200 determines the torque distribution of the internal combustion engine 10, the first motor generator 71, and the second motor generator 72 based on the vehicle required output, the charge rate SOC, and the like. The control device 200 determines the output of the internal combustion engine 10 and the power running and regeneration of the first motor generator 71 and the second motor generator 72 based on the torque distribution of the internal combustion engine 10, the first motor generator 71, and the second motor generator 72. And control. The charge rate SOC is lowered by supplying electric power from the battery 75 to the first motor generator 71 and the second motor generator 72 along with the power running of the first motor generator 71 and the second motor generator 72.

The control device 200 can be configured as a circuit (cyclery) including one or more processors that execute various processes according to a computer program (software). The control device 200 is configured as one or more dedicated hardware circuits such as an application specific integrated circuit (ASIC) that executes at least a part of various processes, or a circuit including a combination thereof. You may. The processor includes a CPU and a memory such as RAM and ROM. The memory stores a program code or a command configured to cause the CPU to execute the process. Memory or computer-readable medium includes any medium accessible by a general purpose or dedicated computer.

Next, the external power supply 500 provided outside the vehicle 100 will be described.
The external power supply 500 includes a power supply main body 510, a circuit breaker 520, and a connector 530. The connector 530 can be connected to the inlet 79. The connector 530 is connected to the power supply main body 510 via the circuit breaker 520. The circuit breaker 520 can break the electrical connection between the connector 530 and the power supply body 510. The circuit breaker 520 is capable of communicating with the control device 200 when the connector 530 and the inlet 79 are connected. The power supply main body 510 can supply AC power. The power supply main body 510 can communicate with the control device 200 when the connector 530 and the inlet 79 are connected.

Next, the control related to the charging of the battery 75 performed by the control device 200 (hereinafter, referred to as charge control) will be described. The control device 200 starts charge control when the connector 530 and the inlet 79 are connected. The charge control unit 230 adjusts the power supplied by the power supply main body 510 based on the input limit power Win. Specifically, the charge control unit 230 controls the power supply main body 510 so that the actual charge power CP does not exceed the input limit power Win.

By the way, for example, if the adjustment of the power supplied by the power supply main body 510 is delayed, the state in which the actual charge power CP exceeds the input limit power Win may continue. In this case, the deterioration of the battery 75 may progress. Therefore, in order to suppress the deterioration of the battery 75, it is desirable to stop the charging when the actual charging power CP continues to exceed the input limiting power Win.

Next, with reference to FIG. 2, a series of processes for stopping charging in charge control will be described. When the control device 200 starts charging control, the control device 200 repeatedly executes a series of processes shown in FIG. 2 at predetermined control cycles.

As shown in FIG. 2, when the charging control is started, in step S10, the charging control unit 230 determines whether or not the charging of the battery 75 is completed. When the charge rate SOC reaches a predetermined upper limit value, the charge control unit 230 determines that the charging of the battery 75 is completed. In step S10, when the charge control unit 230 determines that the charging of the battery 75 is completed (S10: YES), the process proceeds to step S14. On the other hand, in step S10, when the charge control unit 230 determines that the charging of the battery 75 is not completed (S10: NO), the process proceeds to step S11.

In step S11, the charge control unit 230 determines whether or not the actual charge power CP exceeds the input limit power Win. In step S11, when the charge control unit 230 determines that the actual charge power CP exceeds the input limit power Win (S11: YES), the process proceeds to step S12.

In step S12, the charge control unit 230 calculates the excess power amount X, which is the time integral value of the difference between the actual charge power CP and the input limit power Win during the period when the actual charge power CP exceeds the input limit power Win.

The excess power amount X is represented by the following equation (2).
Excess power amount X (i) = excess power amount X (i-1) + (actual charge power CP-input limit power Win) × T ... (2)
The excess power amount X (i) is the excess power amount X of the current control cycle in the series of processes shown in FIG. Further, the excess power amount X (i-1) is the excess power amount X of the previous control cycle in the series of processes shown in FIG. “T” is the time interval of the control cycle. After that, the charge control unit 230 advances the process to step S13.

In step S13, the charge control unit 230 determines whether or not the excess power amount X is equal to or greater than a predetermined threshold value A. In step S13, when the charge control unit 230 determines that the excess power amount X is less than the threshold value A (S13: NO), the charge control unit 230 again executes the processes after step S10. On the other hand, in step S13, when the charge control unit 230 determines that the excess power amount X is equal to or greater than the threshold value A (S13: YES), the process proceeds to step S14.

In step S14, the charge control unit 230 stops charging. Specifically, the charge control unit 230 stops the supply of electric power from the power supply main body 510 to the battery 75 by cutting off the electrical connection between the connector 530 and the power supply main body 510 through the circuit breaker 520. After that, the charge control this time is finished.

On the other hand, in step S11, when the charge control unit 230 determines that the actual charge power CP is equal to or less than the input limit power Win (S11: NO), the process proceeds to step S16. In step S16, the charge control unit 230 resets the excess power amount X. After that, the charge control unit 230 executes the processes after step S10 again.

The operation and effect of this embodiment will be described.
Even if the period from when the actual charge power CP exceeds the input limit power Win to when charging is stopped is the same, the excess power amount X differs depending on the difference between the actual charge power CP and the input limit power Win. Regarding this point, the present inventor has confirmed that the larger the excess power amount X, the more the deterioration of the battery 75 progresses. Therefore, if the configuration is such that charging is stopped when the period from when the actual charging power CP exceeds the input limit power Win to when charging is stopped is a predetermined period or more, the period is exceeded. Deterioration of the battery 75 may proceed excessively due to an increase in the amount of electric power X.

In this respect, in the present embodiment, charging is stopped when the excess power amount X is equal to or greater than a predetermined threshold value A. For example, as shown in FIG. 3, when the actual charge power CP exceeds the input limit power Win at time t11 and the state continues, the excess power amount X gradually increases. Then, when the excess power amount X becomes equal to or higher than the threshold value A at time t12, charging is stopped. The area of the area marked with dots in FIG. 3 corresponds to the excess power amount X.

On the other hand, for example, when the actual charge power CP exceeds the input limit power Win at time t21 and the state continues, the excess power amount X gradually increases. Then, when the excess power amount X becomes equal to or higher than the threshold value A at time t22, charging is stopped. Here, the value X1 of the excess electric energy X from the time t11 to the time t12 and the value X2 of the excess electric energy X from the time t21 to the time t22 are equal to the threshold value A. Alternatively, even if the value X1 of the excess electric energy X and the value X2 of the excess electric energy X already exceed the threshold value A between the previous control cycle and the current control cycle, the difference from the threshold value A is small. be. Therefore, in the present embodiment, the excess power amount X is limited so as not to be larger than the threshold value A. As a result, it is possible to prevent the battery 75 from deteriorating.

<Second Embodiment>
Hereinafter, a second embodiment of the control device of the charging device will be described with reference to FIGS. 4 and 5. In the second embodiment, a series of processes for stopping charging in the charge control executed by the control device 200 is different. When the control device 200 starts charging control, the control device 200 repeatedly executes a series of processes shown in FIG. 4 at predetermined control cycles. In the description of the second embodiment, the differences from the first embodiment will be mainly described, and the same reference numerals will be given to the same configurations as those of the first embodiment, and the description will be omitted or simplified.

As shown in FIG. 4, when the charging control is started, in step S20, the charging control unit 230 determines whether or not the charging of the battery 75 is completed. When the charge rate SOC reaches a predetermined upper limit value, the charge control unit 230 determines that the charging of the battery 75 is completed. In step S20, when the charge control unit 230 determines that the charging of the battery 75 is completed (S20: YES), the process proceeds to step S25. On the other hand, in step S20, when the charge control unit 230 determines that the charging of the battery 75 is not completed (S20: NO), the process proceeds to step S21.

In step S21, the charge control unit 230 determines whether or not the actual charge power CP exceeds the input limit power Win. In step S21, when the charge control unit 230 determines that the actual charge power CP exceeds the input limit power Win (S21: YES), the process proceeds to step S22.

In step S22, the charge control unit 230 sets the predetermined time B based on the actual charge power CP at the time of processing in step S22. If the predetermined time B has already been set, the charge control unit 230 maintains the set predetermined time B.

Specifically, when setting the predetermined time B, the charge control unit 230 estimates a subsequent change in the input limit power Win based on the input limit power Win and the battery temperature TB at the time of processing in step S22. The charge control unit 230 assumes that the actual charge power CP when the actual charge power CP exceeds the input limit power Win is maintained, based on the maintained actual charge power CP and the estimated input limit power Win. A predetermined time B is set as a time at which the excess power amount X, which is the time-integrated value of the difference between the actual charging power CP and the input limit power Win, becomes equal to the above-mentioned threshold value A. Therefore, for example, as shown in FIG. 5, when the actual charge power CP exceeds the input limit power Win at the time t31 and the value CP3 of the actual charge power CP is maintained, after a predetermined time B elapses from the time t31. The value X3 of the excess power amount X at the time t32 of is equal to the threshold value A. Further, for example, when the actual charge power CP exceeds the input limit power Win at the time t41 and the value CP4 of the actual charge power CP is maintained, the excess power amount at the time t42 after the predetermined time B elapses from the time t41. The value X4 of X is equal to the threshold A. The value of the predetermined time B is set shorter as the actual charging power CP is larger. After that, the charge control unit 230 advances the process to step S23.

As shown in FIG. 4, in step S23, the charge control unit 230 calculates the excess time Y, which is the duration of the period during which the actual charge power CP exceeds the input limit power Win. After that, the charge control unit 230 advances the process to step S24.

In step S24, the charge control unit 230 determines whether or not the excess time Y is equal to or longer than the predetermined time B. In step S24, when the charge control unit 230 determines that the excess time Y is less than the predetermined time B (S24: NO), the charge control unit 230 again executes the processes after step S20. On the other hand, in step S24, when the charge control unit 230 determines that the excess time Y is equal to or longer than the predetermined time B (S24: YES), the process proceeds to step S25.

In step S25, the charge control unit 230 stops charging. Specifically, the charge control unit 230 stops the supply of electric power from the power supply main body 510 to the battery 75 by cutting off the electrical connection between the connector 530 and the power supply main body 510 through the circuit breaker 520. As a result, as shown in FIG. 5, after the actual charge power CP exceeds the input limit power Win, the values CP3 and the value CP4 of the actual charge power CP when the actual charge power CP exceeds the input limit power Win Even if it is maintained, the excess power amount X is limited so as not to be larger than the threshold value A. After that, the charge control this time is finished.

On the other hand, as shown in FIG. 4, when the charge control unit 230 determines in step S21 that the actual charge power CP is equal to or less than the input limit power Win (S21: NO), the process proceeds to step S26. In step S26, the charge control unit 230 resets B for a predetermined time. After that, the charge control unit 230 advances the process to step S27. In step S27, the charge control unit 230 resets the excess time Y. After that, the charge control unit 230 executes the processes after step S20 again.

The operation and effect of this embodiment will be described.
Even if the period from when the actual charge power CP exceeds the input limit power Win to when charging is stopped is the same, the excess power amount X differs depending on the difference between the actual charge power CP and the input limit power Win. In particular, as shown in FIG. 5, after the actual charge power CP exceeds the input limit power Win, when the actual charge power CP when the actual charge power CP exceeds the input limit power Win is maintained, the actual charge is performed. As the difference between the power CP and the input limit power Win becomes large, the excess power amount X increases. As a result, the deterioration of the battery 75 may proceed excessively due to the increase in the excess power amount X.

In this regard, the predetermined time B is set as a time during which the excess power amount X becomes equal to the threshold value A, assuming that the actual charge power CP when the actual charge power CP exceeds the input limit power Win is maintained. Then, as shown in FIG. 5, the values CP3 and CP4 of the actual charging power CP when the actual charging power CP exceeds the input limiting power Win are maintained after the actual charging power CP exceeds the input limiting power Win. Even if this is the case, charging of the battery 75 is stopped when the excess power amount X becomes equal to the threshold value A. That is, when the actual charge power CP is maintained when the actual charge power CP exceeds the input limit power Win, the excess power amount X is the threshold value after a predetermined time B after the actual charge power CP exceeds the input limit power Win. Charging of the battery 75 is stopped in anticipation of becoming A. As a result, the excess power amount X is limited so as not to be larger than the threshold value A. As a result, it is possible to prevent the battery 75 from deteriorating.

Hereinafter, other actions and effects of the present embodiment will be described.
(1) When calculating the excess power amount X, it is necessary to calculate the difference between the actual charge power CP and the input limit power Win for each control cycle, so that the control device is compared with the case of calculating the excess time Y. At 200, the load of calculation processing is large. In this respect, in the present embodiment, it is not necessary to calculate the difference between the actual charge power CP and the input limit power Win for each control cycle. Therefore, in the control device 200, it is possible to suppress an increase in the load of the calculation process in calculating the excess power amount X.

This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
-In the first embodiment and the second embodiment described above, the configuration for stopping charging in charge control can be changed. For example, the vehicle 100 may include a circuit breaker that breaks the electrical connection between the inlet 79 and the battery 75. In this configuration, the charge control unit 230 can stop the supply of electric power from the power supply main body 510 to the battery 75 by cutting off the electrical connection between the inlet 79 and the battery 75 through the above-mentioned circuit breaker. In this configuration, the circuit breaker 520 may be omitted.

-In the first embodiment described above, the configuration for calculating the excess power amount X does not matter. For example, in calculating the excess power amount X, a so-called integrator circuit in which the time-integrated value of the input voltage is used as the output voltage may be used.

-In the second embodiment described above, when setting the predetermined time B, a map for determining the predetermined time B may be stored in the control device 200. Then, in this map, it is sufficient that the predetermined time B becomes shorter as the actual charging power CP becomes larger. The above map can be determined by conducting an experiment or the like in advance. Further, in this configuration, it is preferable to correct the predetermined time B obtained by the map based on the input limit power Win and the battery temperature TB when the actual charge power CP exceeds the input limit power Win.

-In the first embodiment and the second embodiment described above, the vehicle 100 does not have to be provided with two motor generators, and may be provided with at least one motor generator.

-In the first and second embodiments described above, the vehicle 100 does not have to be a hybrid vehicle, and may be a vehicle not provided with an internal combustion engine 10, a so-called electric vehicle.

-In the first embodiment and the second embodiment described above, the charging device is not limited to the configuration applied to the vehicle. For example, the charging device may be an electric appliance or the like capable of external charging.

A ... Threshold B ... Predetermined time CP ... Actual charge power Win ... Input limit power Wout ... Output limit power X ... Excess power amount X1 ... Excess power amount X2 ... Excess power amount Y ... Excess time 10 ... Internal engine 40 ... First planet Gear mechanism 45 ... Ring gear shaft 50 ... 2nd planetary gear mechanism 64 ... Drive wheel 71 ... 1st motor generator 72 ... 2nd motor generator 75 ... Battery 78 ... Converter 79 ... Inlet 100 ... Vehicle 200 ... Control device 210 ... Power limit Calculation unit 220 ... Actual charge power acquisition unit 230 ... Charge control unit 500 ... External power supply 510 ... Power supply main unit 520 ... Breaker 530 ... Connector

Claims (1)

A control device that controls a charging device including a battery charged by an external power source provided outside the charging device.
An input limit power calculation unit that calculates an input limit power that is an upper limit value of the power input from the external power source to the battery, and an input limit power calculation unit.
An actual charging power acquisition unit that acquires actual charging power, which is the value of the power actually input to the battery from the external power source, and
Charging of the battery when the excess power amount, which is the time integrated value of the difference between the actual charging power and the input limiting power in the period when the actual charging power exceeds the input limiting power, is equal to or more than a predetermined threshold value. A control device for a charging device, including a charging control unit that stops the operation.

Images