JP2019129620A - Charging control device of vehicle - Google Patents

Abstract

To provide a charging control device of a vehicle, which suppresses progress of storage deterioration of a secondary battery.SOLUTION: A charging rate of a secondary battery 2 is detected in a charging rate detection part 21. A first management part 24 for managing external charging and a second management part 25 for managing internal charging are provided. The first management part 24 makes the external charging to be performed until a predetermined termination condition is satisfied, and makes the external charging to be terminated once the termination condition is satisfied. The second management part 25, when the termination condition is satisfied in a state where the charging rate is in a predetermined range excepting a full charging state, makes the internal charging to be started after the external charging is terminated and makes the internal charging to be continued until the charging rate gets out of the predetermined range.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for managing external charging for charging a secondary battery with an external power supply device and internal charging for charging the secondary battery with a fuel cell in a vehicle equipped with a fuel cell and a secondary battery.

  2. Description of the Related Art Conventionally, various drive systems for causing a vehicle to travel by using a fuel cell and a secondary battery in combination are known. For example, it has been proposed that electric power is generated by continuously supplying fuel and an oxidant to a fuel cell, and a traveling motor is driven using the electric power, or a traveling battery is charged. Also, in view of the instability of the output of the fuel cell in a low temperature environment, the driving motor is driven by the electric power of the secondary battery when starting the vehicle, and the power generation is carried out after the temperature of the fuel cell reaches a stable operation. This has also been proposed (see, for example, Patent Documents 1 and 2). By using the fuel cell, power generation can be performed without depending on the traveling state of the vehicle, and the cruising distance of the vehicle can be extended.

Japanese Patent Application Publication No. 201-143026 Unexamined-Japanese-Patent No. 2016-126850

  By the way, as a deterioration phenomenon of the secondary battery, it progresses by being left under specific conditions (for example, a state in which the charging rate is within a predetermined range) which progresses by repeating charging and discharging and a cycle condition. It is known that "storage deterioration". The progress of the former deterioration can be suppressed, for example, by increasing the capacity of the secondary battery and reducing the frequency of charge and discharge. On the other hand, it is difficult to prevent the latter deterioration because it is necessary to take some measures immediately before the secondary battery is left, so that conditions that are likely to deteriorate are not met.

  For example, a vehicle in which a secondary battery is charged by a household power supply using late-night power is assumed. The secondary battery of this vehicle is externally charged while the user is sleeping, and is left when charging is completed. On the other hand, when the charging rate at the time when charging is completed is within a predetermined range, charging must be continued to avoid this. However, due to the restriction on the application time of late-night power and the restriction on the amount of charging power, external charging can not always be continued. Therefore, the charging rate is left in a predetermined range, and storage deterioration may progress.

  In addition, elution of the electrode active material with respect to an electrolyte is mentioned as one of the factors of storage degradation. The ease of elution of the electrode active material depends on the characteristics of the active material and the electrolyte. In general, it is said that the storage deterioration is more likely to progress as the state of charge of the secondary battery is closer to full charge. However, some electrode active materials that have been developed in recent years have characteristics that the storage deterioration is more likely to progress as the charging rate is lower (for example, spinel type lithium manganate). Therefore, depending on the type and combination of the electrode active material, the progress of storage deterioration may be promoted even if the charging rate is not close to full charge.

  One of the objects of the present invention is to solve the problems as described above, and to provide a vehicle charge control device capable of suppressing the progress of storage deterioration of a secondary battery. The present invention is not limited to this object, and it is an operation and effect derived from each configuration shown in the “embodiments to be described later”, and it is also possible to exert an operation and effect that can not be obtained by the prior art. Can be positioned as a purpose.

  (1) The disclosed vehicle charge control device is generated by an external charge for charging the secondary battery with electric power supplied from an external power supply device and the fuel cell in a vehicle equipped with a fuel cell and a secondary battery. And a charge control device that manages internal charging for charging the secondary battery with electric power. The present apparatus includes a charging rate detection unit that detects the charging rate of the secondary battery. A first management unit that manages the external charging and performs the external charging until a predetermined termination condition is satisfied; and terminates the external charging when the termination condition is satisfied. Furthermore, the internal charge is managed, and the internal charge is started after the end of the external charge when the termination condition is satisfied in a state where the charge rate is within a predetermined range excluding a fully charged state, and the charge A second management unit is provided to continue the internal charging until the rate goes out of the predetermined range.

(2) It is preferable to provide a deterioration state detection unit that detects deterioration of the fuel cell. Further, it is preferable that when the second management unit detects deterioration of the fuel cell during the internal charging, the generated voltage of the fuel cell is vibrated.
(3) It is preferable to provide a received power detection unit that detects charge acceptability of the secondary battery. Moreover, it is preferable that said 2nd management part reduces the electric power generation voltage of the said fuel cell, when the said charge acceptance property is lower than a predetermined reference | standard in the case of the said internal charge.
(4) The predetermined termination condition may include detecting removal of a charging gun connecting the external power supply device and the vehicle, or detecting stoppage of power supply from the external power supply device. preferable.

  When the external charging termination condition is satisfied in a state where the charging rate of the secondary battery is within the predetermined range, the internal charging is performed following the external charging. Thereby, a charging rate can be raised out of the predetermined range, and progress of storage deterioration of the secondary battery can be suppressed. Therefore, the lifetime of the secondary battery can be extended, and the reliability of the vehicle power system can be improved.

FIG. 1 is a block diagram for describing a configuration of a vehicle to which a charge control device according to an embodiment is applied. It is a graph for demonstrating the predetermined range of a charging rate. (A), (B) is a graph for demonstrating the recovery process of a fuel cell. It is a flowchart for demonstrating the control content implemented with a charge control apparatus.

  Hereinafter, the charging control apparatus 20 as an embodiment will be described with reference to the drawings. The embodiments shown below are merely illustrative, and there is no intention to exclude the application of various modifications and techniques that are not specified in the following embodiments. Each structure of this embodiment can be variously modified and implemented in the range which does not deviate from those meaning. Also, they can be selected as needed or can be combined as appropriate.

[1. Constitution]
As shown in FIG. 1, the charging control device 20 is applied to a vehicle 10 on which a fuel cell 1 and a secondary battery 2 are mounted. The secondary battery 2 is a power storage device that stores electric power for driving the vehicle 10, and is, for example, a lithium ion battery or a nickel metal hydride battery. The electric power stored in the secondary battery 2 is used for driving the electric motor 3. The electric motor 3 is an AC motor generator that has both a function as a motor (vehicle drive function) and a function as a generator (regenerative power generation function), and is connected to drive wheels via a transaxle, a gear, and the like.

  The fuel cell 1 is a gas cell (power generation device) that converts a change in free energy accompanying an oxidation reaction of hydrogen or carbon monoxide into electric energy. The power generated by the fuel cell 1 is supplied to the secondary battery 2 and the motor 3. Specific examples of the fuel cell 1 include a solid oxide fuel cell (SOFC), a molten carbonate fuel cell (MCFC), a polymer electrolyte fuel cell (PEFC), a phosphoric acid fuel cell ( Examples include PAFC (Phosphoric Acid Fuel Cell) and alkaline electrolyte fuel cell (AFC). A hydrogen or carbon monoxide gas (fuel gas) stored in a fuel tank 5 is supplied to the anode side of the fuel cell 1 shown in FIG. 1, and outside air (air containing oxygen) is supplied to the cathode side. .

  The fuel cell 1 and the secondary cell 2 are connected by a DC circuit 17. The motor 3 is connected to a DC circuit 17 via an inverter 4. The inverter 4 is a converter (DC-AC inverter) that mutually converts DC power on the DC circuit 17 side and AC power on the motor 3 side. At the time of power running of the motor 3, AC drive power is supplied from the secondary battery 2 side to the motor 3 side. On the other hand, during regeneration or power generation of the electric motor 3, DC charging power is supplied from the electric motor 3 side to the secondary battery 2 side. The inverter 4 and the motor 3 are connected by a three-phase alternating current power line.

  The on-vehicle charger 6 is connected to the DC circuit 17. The on-vehicle charger 6 charges the secondary battery 2 using a charging facility such as an external charging device 8 provided outside the vehicle 10 (that is, a normal charging device installed at a charging station) or a household outlet. On the other hand, it is a converter in charge of AC / DC conversion. In the present embodiment, AC power of several hundred volts supplied from the external charging device 8 is converted into DC power by the in-vehicle charger 6, and the secondary battery 2 is charged. A charging gun 9 is provided at the tip of a feeder connected to the external charging device 8. By inserting the charging gun 9 into the charging port 7 of the vehicle 10, the in-vehicle charger 6 and the external charging device 8 are connected, and external charging by the external charging device 8 can be performed. One of the charging devices installed in the charging station is a rapid charging device. The rapid charging apparatus can output high-voltage DC power and can charge the secondary battery 2 by supplying power to the DC circuit 17 without going through the in-vehicle charger 6.

  Hereinafter, the charging of the secondary battery 2 by the power supplied from the external power supply device (such as the external charging device 8 or the quick charging device) is referred to as “external charging”. On the other hand, charging of the secondary battery 2 by the power generated by the on-board fuel cell 1 is referred to as "internal charging". The charge control device 20 has a function of managing external charging and internal charging. The charging control device 20 includes a processor (central processing unit), a memory (main memory), an auxiliary storage device, an interface device, a recording medium drive, and the like, and is communicably connected to each other via an internal bus.

  The processor is a central processing unit including a control unit (control circuit), an arithmetic unit (arithmetic circuit), a cache memory (register group), and the like. The memory is a storage device that stores a program and working data, and includes, for example, a ROM (Read Only Memory) and a RAM (Random Access Memory). The auxiliary storage device is a memory device that stores data and firmware that are held for a longer time than the memory, and includes, for example, a nonvolatile memory such as a flash memory and an EEPROM.

  The interface device is responsible for input and output (I / O) between the charge control device 20 and the outside. The recording medium drive is a reading device (or reading / writing device) having a function of reading information recorded and stored in a recording medium (removable medium) such as an optical disk or a semiconductor memory (flash drive conforming to the universal serial bus standard). ). The program executed by the charging control device 20 may be recorded and stored in a memory, or may be recorded and stored in an auxiliary storage device or a recording medium.

  As shown in FIG. 1, a first voltage sensor 11, a second voltage sensor 12, a first temperature sensor 13, a second temperature sensor 14, a current sensor 15, and an insertion detection sensor 16 are connected to the charge control device 20. The first voltage sensor 11 detects the terminal voltage of the secondary battery 2, and the second voltage sensor 12 detects the cell voltage of the fuel cell 1. Similarly, the first temperature sensor 13 detects the temperature of the secondary battery 2 (battery temperature), and the second temperature sensor 14 detects the temperature of the fuel cell 1 (cell temperature). The current sensor 15 detects the current (charge / discharge current) of the secondary battery 2. Further, the insertion detection sensor 16 detects the presence or absence of insertion of the charging gun 9 into the charging port 7. Information detected by the various sensors 11 to 16 is transmitted to the charge control device 20 as needed.

The secondary battery 2 is assumed to have a characteristic that the storage deterioration tends to proceed when the state of charge (SOC) is within a predetermined range. The predetermined range here is a range excluding at least a fully charged state (SOC is 100%). The electrode active material of the secondary battery 2 includes a material (for example, spinel type lithium manganate) having a characteristic that the storage deterioration is more likely to proceed as the temperature is higher and the SOC is lower, and the temperature environment in which the vehicle 10 is used. (For example, within a range of −30 to + 80 ° C.), the SOC is likely to undergo storage deterioration when the SOC is within the range of A _{MIN to} A _MAX % (eg, 40 to 60%).

[2. control]
The charge control device 20 according to the present embodiment performs control to continue internal charging when the SOC is within the range of A _{MIN to} A _MAX % when external charging ends. That is, control is performed to raise the SOC to a value outside the range of A _{MIN to} A _MAX % by internal charging so that the secondary battery 2 is not left in a state where it is likely to deteriorate after external charging is completed. In order to realize such control, the charging control device 20 is provided with a charging rate detection unit 21, a deterioration state detection unit 22, a received power detection unit 23, a first management unit 24, and a second management unit 25. These elements are classified functions of the charging control device 20 for convenience, and each element may be described as an independent program, or described as a composite program having these functions. May be.

  The charging rate detection unit 21 detects the SOC of the secondary battery 2. The SOC of the secondary battery 2 can be obtained as a ratio of the charge capacity to the full charge capacity (that is, “current charge capacity / charge capacity at full charge”). The current charge capacity can be calculated by integrating the charge / discharge current amount. It is also possible to estimate from the terminal voltage based on the correspondence between the terminal voltage of the secondary battery 2 and the SOC. A known method can be adopted as a specific SOC detection, calculation, and estimation method.

  The deterioration state detection unit 22 detects the deterioration of the fuel cell 1. In general, if the cell temperature of the fuel cell 1 is stable within the reaction temperature range, the cell voltage becomes constant. On the other hand, as the fuel cell 1 deteriorates, impurities (electrodes, separators, electrolytes, oxides of substances contained in the catalyst, decomposition products of membrane electrode assemblies, sulfur components contained in the air, etc.) adhere to the electrode surface, Cell voltage drops. As for the deterioration state of the fuel cell 1, it is determined that the deterioration progresses as the cell voltage in a predetermined constant temperature state decreases. The deterioration state detection unit 22 of the present embodiment determines that the fuel cell 1 has deteriorated when the cell temperature is within the reaction temperature range and the cell voltage is equal to or lower than a predetermined value.

  The received power detection unit 23 detects the chargeability of the secondary battery 2. Charge acceptability means the ease with which a charging reaction occurs during charging, and can be determined based on the magnitude of the charging current value during external charging, for example. The received power detection unit 23 of the present embodiment indicates that the charge acceptability of the secondary battery 2 is lower than a predetermined reference when the current value is less than a predetermined value during constant voltage charging by external charging. to decide.

The first management unit 24 manages the state of external charging of the secondary battery 2. External charging is performed when a predetermined external charging start condition is satisfied when the vehicle 10 is stopped. The external charging start condition of this embodiment is that at least condition 1 and condition 2 are satisfied (preferably, condition 3 is also satisfied).
Condition 1. The vehicle 10 is stopped. Condition 2. The charging gun 9 is inserted into the charging port 7 Condition 3. Battery temperature is within a predetermined temperature range (for example, 0 to 40 ° C)

The external charging is continued until a predetermined external charging termination condition is satisfied. The external charging termination condition of the present embodiment is that any of the following conditions 4 to 6 is satisfied.
Condition 4. Condition that the charging gun 9 is removed from the charging port 7 Conditions under which the power supply from the external charging device 8 has stopped. Secondary battery 2 is fully charged

The second management unit 25 manages the state of internal charging of the secondary battery 2. The internal charging is performed when a predetermined internal charging start condition is satisfied. The external charging start condition of the present embodiment is that at least condition 7 and condition 8 are satisfied (preferably, condition 3 is also satisfied). The internal charging is continued until either condition 7 or condition 8 is not satisfied.
Condition 7. Condition 8. The SOC of the secondary battery 2 is less than a predetermined value. The remaining amount of fuel in the fuel tank 5 is equal to or greater than a predetermined amount

However, when the external charging is completed and the SOC is within a predetermined range (in the range of A _{MIN to} A _MAX %), the internal charging is performed following the external charging. In this case, internal charging continues until the SOC reaches A _MAX %. That is, when the SOC belongs to a range in which the storage deterioration easily proceeds when the external charging is completed, the internal charging is performed until the SOC goes out of the range. For example, as shown in FIG. 2, it is assumed that external charging is started at time T ₁ and the external charging end condition is satisfied at time T ₂ . At this time, if the SOC is equal to or lower than A _MIN % or equal to or higher than A _MAX %, external charging is terminated as it is. On the other hand, when the SOC is within the range of A _{MIN to} A _MAX %, the internal charging is started immediately after the external charging is finished. This internal charging is continued until SOC reaches A _MAX % at time _TEND . Such control prevents the storage deterioration of the secondary battery 2.

  At the time of the above-mentioned internal charging, the second management unit 25 of the present embodiment performs the output control of the two types of fuel cells 1 based on the degree of deterioration of the fuel cells 1 and the chargeability of the secondary cells 2. The first output control is control (recovery processing) that vibrates the generated voltage (cell voltage) based on the deterioration state of the fuel cell 1, and the second output control is based on charge acceptability of the secondary battery 2. Control (suppression processing) to reduce the generated voltage (cell voltage). The former output control is performed when the deterioration state detection unit 22 determines that the fuel cell 1 has deteriorated. The latter output control is performed when the received power detection unit 23 determines that the charge acceptance of the secondary battery 2 has decreased below a predetermined standard. These output controls can be performed simultaneously.

  The former output control is control for periodically increasing and decreasing the generated voltage as shown in FIGS. 3 (A) and 3 (B). The magnitude of the generated voltage can be controlled by changing the flow velocity and flow rate of the fuel gas and air. Alternatively, control is also possible by changing the flow velocity and flow rate of the cooling water for cooling the fuel cell 1. The oscillation period of the generated voltage is on the order of several seconds to several tens of minutes. By vibrating the generated voltage, the electric adsorption force acting between the impurities attached to the electrode surface and the electrode fluctuates, and the impurities are easily detached from the electrode surface.

As shown in FIGS. 3A and 3B, when the value V ₁ of the generated voltage at the time T ₂ when the internal charging is started is equal to or lower than the predetermined appropriate voltage V _OPT , the fuel cell in the deterioration state detection unit 22 1 is judged to have deteriorated. In response to this determination, the second management unit 25 increases the power generation voltage by increasing the flow rate and flow rate of the fuel gas and air, or by increasing the flow rate and flow rate of the cooling water. When the generated voltage reaches V ₂ higher than V _{1 at} time T ₄ , the power generation state is maintained from time T ₄ to time T ₅ after a predetermined time, and then the generated current is increased, or fuel gas and air Reduce the flow rate and flow rate of the cooling water, or decrease the flow rate and flow rate of the cooling water. Thereby, the generated voltage at time T ₆ is lowered to a low V ₀ than V _1, the electrical attraction force is weakened. This state continues from time T ₆ to time T ₅ after a predetermined time.

Thereafter, the power generation voltage is increased again by increasing the flow rate and flow rate of the fuel gas and air, or by increasing the flow rate and flow rate of the cooling water. By repeating such an operation, impurities on the electrode surface can be reduced, and the maximum value of the generated voltage can be gradually increased. For example, as shown in FIG. 3A, when the maximum values V ₂ , V ₃ , and V ₄ of the generated voltage for each cycle are measured, the magnitude relationship between these is V ₂ ≦ V ₃ ≦ V ₄ . When the generated voltage has reached the proper voltage V _OPT at time T _9, the generated voltage to exit the control to cyclically increase and decrease, continues the normal internal charge. The internal charging is terminated when the SOC of the secondary battery 2 leaves the predetermined range (A _{MIN to} A _MAX % range) and reaches A _MAX %.

The latter output control is control that suppresses the amount of power supplied to the secondary battery 2 by lowering the generated voltage. If the current value at time T _2, the internal charging is started it is less than a predetermined value, the charge acceptance of the receiving power detection unit 23 the secondary battery 2 is determined to be lower than a predetermined reference. In response to this determination, the second management unit 25 reduces the generated voltage by decreasing the flow rate and flow rate of the fuel gas and air, or by decreasing the flow rate and flow rate of the cooling water. In the case where the former output control, the latter, and the output control are performed at the same time, the generated voltage may be increased or decreased periodically while being reduced as shown in FIG. Good. In addition, the amount of power supplied to the secondary battery 2 may be further suppressed by setting a longer time for the generated voltage to be V ₀ .

[3. flowchart]
FIG. 4 is a flowchart for explaining the control at the time of transition from external charging to internal charging performed by the charging control device 20. The control shown in this flowchart is repeatedly executed during the external charging. First, the charging control device 20 acquires information detected by the various sensors 11 to 16 (step A1), and calculates the SOC of the secondary battery 2 (step A2). The SOC is calculated based on, for example, the terminal voltage and charge / discharge current of the secondary battery 2. Further, the first management unit 24 determines whether or not an external charging termination condition is satisfied (step A3). If this condition is not satisfied, the present flow is terminated.

On the other hand, when the external charging termination condition is satisfied, it is determined whether or not the SOC at that time is within a predetermined range (within a range of A _{MIN to} A _MAX %) (step A4). If this condition is not satisfied, it is determined that the storage deterioration of the secondary battery 2 is unlikely to proceed, and the first management unit 24 terminates the external charging and at the same time the present flow is terminated (step A5). On the contrary, when the condition of step A4 is satisfied, it is determined that the storage deterioration of the secondary battery 2 is likely to proceed, and the second management unit 25 starts the internal charging after the external charging ends (step A6). .

  In internal charging, the deterioration state detection unit 22 acquires the cell voltage of the fuel cell 1 (step A7). The cell voltage is acquired in a state where the cell temperature of the fuel cell 1 is within the reaction temperature range. Further, in the received power detection unit 23, the chargeability of the secondary battery 2 is grasped. Here, a current value corresponding to charge acceptability is acquired. Thereafter, it is determined whether the cell voltage of the fuel cell 1 is equal to or less than a predetermined value (step A9). If this condition is not satisfied, it is determined that the fuel cell 1 is not deteriorated, and the flow rates and flow rates of the fuel gas, air and cooling water are controlled such that the fuel cell 1 generates power at the highest efficiency (step A11). . On the other hand, if the condition of step A9 is satisfied, it is determined that the fuel cell 1 has deteriorated, and at least the control for oscillating the cell voltage is confirmed.

In step A10 following step A9, it is determined whether or not the charge acceptance of the secondary battery 2 is equal to or higher than a predetermined reference. When this condition is satisfied, it is determined that the charge acceptance of the secondary battery 2 is sufficient, and only the recovery process of the fuel cell 1 is performed (step A12). When the condition of step A10 is not satisfied, it is determined that the charge acceptance of the secondary battery 2 is not sufficient, and the suppression process for reducing the generated voltage is performed in addition to the recovery process of the fuel cell 1 ( Step A13). In step A14 following steps A11 to A13, it is determined whether or not the SOC has deviated from a predetermined range. If the SOC does not reach A _MAX %, the control proceeds to step A7, and the internal charging is continued. The internal charging ends when the SOC reaches A _MAX % (step A15).

[4. effect]
(1) In the present embodiment, when the SOC is within a predetermined range (within the range of A _{MIN to} A _MAX %) at the end of external charging, the internal charging is continuously performed, and the SOC is raised outside the predetermined range. By such control, progress of storage deterioration of the secondary battery 2 can be prevented. In particular, when the secondary battery 2 mounted on the vehicle 10 is charged with a household power supply, external charging is often completed while the user is sleeping, and the SOC continues to remain within a predetermined range. On the other hand, according to the control of the present embodiment, the internal charging can be automatically performed when the external charging is completed, and the SOC can be reliably out of the predetermined range. Therefore, the progress of storage deterioration of the secondary battery 2 can be prevented more reliably, the life of the secondary battery 2 can be extended, and the reliability of the in-vehicle power system can be improved.

  (2) When the deterioration of the fuel cell 1 is detected during the above internal charging, a recovery process for vibrating the generated voltage of the fuel cell 1 is performed. Thereby, the impurities attached to the electrode surface of the fuel cell 1 can be removed, and the performance of the fuel cell 1 can be recovered. Thereby, the implementation time of the internal charge can be shortened, and the SOC can be raised to outside the predetermined range in a short time. Therefore, the progress of storage deterioration of the secondary battery 2 can be prevented more reliably, and the life of the secondary battery 2 can be extended. Further, the life of the fuel cell 1 can be extended, and the reliability of the on-vehicle power system can be further improved.

  (3) At the time of the above internal charging, when the charge acceptance of the secondary battery 2 is lower than a predetermined standard, a suppression process for reducing the power generation voltage of the fuel cell 1 is performed. Thereby, deterioration of secondary battery 2 and performance degradation due to internal charging can be prevented, and the reliability of the in-vehicle power system can be further improved. In addition, by supplying electric power suitable for charge acceptance to the secondary battery 2, the battery temperature of the secondary battery 2 can be increased without difficulty, and internal charging can be performed while restoring charge acceptance. it can.

  (4) In the present embodiment, the termination condition of the external charging includes “the removal of the charging gun 9 from the charging port 7” and “the stopping of the power supply from the external charging device 8”. By performing the transition from external charging to internal charging only under these conditions, it is possible to prevent internal charging from being inadvertently started, and to accurately detect the termination of external charging. In addition, immediately after the end of external charging, internal charging can be reliably started. Therefore, the lifetime of the secondary battery 2 can be extended more reliably, and the reliability of the in-vehicle power system can be improved.

[5. Modified example]
Conditions 1 to 8 in the above-described embodiment are merely examples, and are not essential conditions constituting the present invention. In the above-described embodiment, external charging by the external charging device 8 (that is, external charging using the in-vehicle charger 6) has been described in detail. However, external charging by the quick charging device (that is, external without using the in-vehicle charger 6). The same control can be performed in the charging). The internal charging is started when the external charging termination condition is satisfied at least in a state where the SOC is within the predetermined range, and the internal charging is continued until the SOC is out of the predetermined range. It is possible to realize control that exerts effects.

DESCRIPTION OF SYMBOLS 1 Fuel cell 2 Secondary battery 20 Charge control apparatus 21 Charging rate detection part 22 Degradation state detection part 23 Accepted power detection part 24 1st management part 25 2nd management part

Claims (4)

In a vehicle equipped with a fuel cell and a secondary battery, external charging for charging the secondary battery with power supplied from an external power supply and internal charging for charging the secondary battery with power generated by the fuel cell A charge control device for managing
A charging rate detection unit that detects a charging rate of the secondary battery;
A first management unit that manages the external charging and performs the external charging until a predetermined termination condition is satisfied, and terminates the external charging when the termination condition is satisfied;
The internal charging is managed, and when the termination condition is satisfied in a state where the charging rate is within a predetermined range excluding the fully charged state, the internal charging is started after the external charging is completed, and the charging rate is A second management unit that continues the internal charging until it goes out of the predetermined range;
A charge control device for a vehicle, comprising: A deterioration state detection unit that detects deterioration of the fuel cell;
2. The vehicle charging control device according to claim 1, wherein when the second management unit detects deterioration of the fuel cell during the internal charging, the power generation voltage of the fuel cell is vibrated. 3. An acceptance power detection unit that detects chargeability of the secondary battery;
3. The vehicle charging according to claim 1, wherein the second management unit reduces the power generation voltage of the fuel cell when the charge acceptance is lower than a predetermined reference during the internal charging. 4. Control device. The predetermined termination condition includes detecting the removal of a charging gun connecting the external power supply device and the vehicle, or detecting the stop of power supply from the external power supply device. The charge control device for a vehicle according to any one of claims 1 to 3.

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