Vehicle control device

Abstract

A vehicle-mounted control device (1) includes a control unit (21) for switching an interrupting unit (14) from an allowing state to an interrupting state if an interruption condition is established, and a setting unit (22) for setting the interruption condition. The setting unit (22) sets the interruption condition on the basis of whether either of a first operation, for transferring electric power between an electricity storage unit (90) and a first transfer unit (connecting unit (91)) if a first switch (11) is in an ON state, and a second operation, for transferring electric power between the electricity storage unit (90) and a second transfer unit (first load (92)) if a second switch (12) is in an ON state, is being executed.

Description

[Technical field]

[0001] The present disclosure relates to an in-vehicle control device. [Background technology]

[0002] Patent Document 1 discloses a power supply device mounted on a vehicle. The power supply device includes a battery, an electric load, and a fuse. The fuse is disposed between the battery and the electric load and functions as an overcurrent protection element.

[0003] Patent Document 2 discloses an overcurrent protection device provided between a power source and a load circuit. The load circuit has an electric load and an electric wire that are electrically connected to each other. The overcurrent protection device estimates the thermal characteristics of the electric wire based on the load current, and turns off a switching element based on the estimated thermal characteristics and the load current. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-67977 A [Patent Document 2] JP 2019-97357 A Summary of the Invention [Problem to be solved by the invention]

[0005] In a configuration in which there are multiple transfer units that transfer power to and from a power storage unit, it may be necessary to switch the cutoff condition depending on which transfer unit the power storage unit is transferring power to and from. However, if an attempt is made to provide a cutoff unit for each path corresponding to each transfer unit using the technology of Patent Document 1 or Patent Document 2, this would result in an increase in the number of parts.

[0006] Therefore, an object of the present disclosure is to provide a technique that can appropriately implement overcurrent protection while suppressing an increase in the number of components in a configuration that includes a plurality of transfer units that transfer power to and from a power storage unit. [Means for solving the problem]

[0007] The in-vehicle control device of the present disclosure includes: an in-vehicle control device for use in an in-vehicle system having a power storage unit, a plurality of transfer units for transferring power between the power storage unit and the power storage unit, a common path provided between the power storage unit and the plurality of transfer units, a first branch path provided between a first transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a second branch path provided between a second transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a first switch provided in the first branch path, a second switch provided in the second branch path, and a cutoff unit configured to switch from a permissive state that permits a current flow in the common path to a cutoff state that cuts off the current flow, a control unit that switches the interrupter from the permitting state to the interrupting state when an interrupting condition is satisfied; A setting unit for setting the interruption condition; having The setting unit sets the cut-off condition based on which of the following operations is currently being performed: a first operation of transferring power between the power storage unit and the first transfer unit when the first switch is in an on state, and a second operation of transferring power between the power storage unit and the second transfer unit when the second switch is in an on state. Effect of the Invention

[0008] According to the present disclosure, in a configuration including a plurality of transfer units that transfer power to and from a power storage unit, it is possible to preferably perform overcurrent protection while suppressing an increase in the number of components. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a circuit diagram illustrating a schematic configuration of an in-vehicle system according to the first embodiment. [Diagram 2] FIG. 2 is a graph showing the relationship between the first blocking characteristic and the first switch blocking characteristic. [Diagram 3]FIG. 3 is a graph showing the relationship between the second cutoff characteristic and the second switch cutoff characteristic. [Figure 4] FIG. 4 is a graph showing the relationship between the third cutoff characteristic and the third switch cutoff characteristic. [Diagram 5] FIG. 5 is a flowchart showing a flow of control executed by the on-vehicle control device of the first embodiment. [Figure 6] FIG. 6 is a circuit diagram illustrating a schematic configuration of an in-vehicle system according to the second embodiment. [Figure 7] FIG. 7 is a flowchart showing a flow of control executed by the vehicle-mounted control device of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [Description of the embodiments of the present disclosure] In the following, embodiments of the present disclosure are listed and illustrated.

[0011] [1] An in-vehicle control device used in an in-vehicle system having a power storage unit, a plurality of transfer units that transfer power between the power storage unit and the power storage unit, a common path provided between the power storage unit and the plurality of transfer units, a first branch path provided between a first transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a second branch path provided between a second transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a first switch provided in the first branch path, a second switch provided in the second branch path, and a cutoff unit that switches from a permissive state that allows a current to flow in the common path to a cutoff state that cuts off the current, a control unit that switches the interrupter from the permitting state to the interrupting state when an interrupting condition is satisfied; A setting unit for setting the interruption condition; having The setting unit sets the cutoff condition based on which of a first operation of transferring power between the power storage unit and the first transfer unit when the first switch is in an on state and a second operation of transferring power between the power storage unit and the second transfer unit when the second switch is in an on state is being executed. In-vehicle control device.

[0012] The vehicle-mounted control device can interrupt the flow of current in the common path provided between the power storage unit and the multiple transfer units by switching the cutoff unit to a cutoff state when a cutoff condition is satisfied. Moreover, the vehicle-mounted control device can set the cutoff condition based on whether the first operation or the second operation is being performed. In other words, the cutoff condition can be switched depending on which transfer unit the power storage unit is transferring power to and from, without providing a cutoff unit corresponding to each transfer unit. Therefore, in a configuration in which there are multiple transfer units that transfer power to and from the power storage unit, it is possible to preferably perform overcurrent protection while suppressing an increase in the number of components.

[0013] [2] The setting unit determines whether the first operation or the second operation is being executed based on whether the first switch and the second switch are in an on state or an off state. The vehicle-mounted control device described in [1].

[0014] According to this configuration, it is possible to simplify the determination as to whether the first operation or the second operation is being executed.

[0015] [3] The setting unit sets a first cutoff condition included in the cutoff condition when it is determined that the first operation is being performed, and sets a second cutoff condition included in the cutoff condition when it is determined that the second operation is being performed; the first interruption condition is a condition for switching the interrupter to the interruption state before the first switch is switched to an off state when a current value of a current flowing through the first branch path exceeds a first threshold current, The second interruption condition is a condition for switching the interrupter to the interruption state before the second switch is switched to the off state when a current value of the current flowing through the second branch path exceeds a second threshold current different from the first threshold current. An in-vehicle control device according to [1] or [2].

[0016] According to this configuration, when the current value of the current flowing through the first branch exceeds the first threshold current during the first operation, the cutoff unit can be switched to the cutoff state before the first switch is switched to the cutoff state. Also, when the current value of the current flowing through the second branch exceeds the second threshold current during the second operation, the cutoff unit can be switched to the cutoff state before the second switch is switched to the cutoff state.

[0017] [4] The first switch is switched to an off state based on a first switch cut-off characteristic; the second switch is switched to an off state based on a second switch blocking characteristic; The first interruption condition is determined based on a first interruption characteristic; The second interruption condition is determined based on a second interruption characteristic; the first switch cut-off characteristic, the second switch cut-off characteristic, the first cut-off characteristic, and the second cut-off characteristic are defined by correspondence data indicating a correspondence relationship between a current-flow time and a current value, The current flow time of the first cutoff characteristic corresponds to a time longer than that of the first switch cutoff characteristic for a current value equal to or less than the first threshold current, and corresponds to a time shorter than that of the first switch cutoff characteristic for a current value exceeding the first threshold current, The current flow time of the second cutoff characteristic corresponds to a time longer than that of the second switch cutoff characteristic for a current value equal to or less than the second threshold current, and corresponds to a time shorter than that of the second switch cutoff characteristic for a current value exceeding the second threshold current. The vehicle-mounted control device described in [3].

[0018] According to this configuration, when the current value of the current flowing through the common path exceeds the first threshold current during the first operation, the cutoff unit can be switched to the cutoff state before the first switch based on the current flow time. Also, when the current value of the current flowing through the common path exceeds the second threshold current during the second operation, the cutoff unit can be switched to the cutoff state before the second switch based on the current flow time.

[0019] [5] The first transmitting / receiving unit is a connection unit that is connected to an external power source via a charging cable, The second transfer unit is a load, the common path is a discharge path from the power storage unit and a charge path to the power storage unit, the first branch path is a path that guides the power supplied via the connection portion to the common path, the second branch path is a path that guides the power from the common path to the load, The setting unit sets the cutoff condition based on whether a charging operation is being performed in which a charging current supplied via the connection unit flows to the power storage unit when the first switch is in an on state, or a discharging operation is being performed in which a discharging current flows from the power storage unit to the load when the second switch is in an on state. An in-vehicle control device according to any one of [1] to [4].

[0020] According to this configuration, overcurrent protection can be suitably performed based on whether a charging operation or a discharging operation is being performed.

[0021] [6] The second threshold current is greater than the first threshold current. The vehicle-mounted control device described in [5].

[0022] This configuration makes it possible to allow a discharging operation in which a larger current flows than during a charging operation.

[0023] [7] The in-vehicle system includes a third branch path that is provided between a third transfer unit among the plurality of transfer units and the common path and is electrically connected to the common path, and a third switch that is provided in the third branch path; the third transfer portion is a second load, a second discharging operation is performed in which a discharging current flows from the power storage unit to the second load when the third switch is in an on state; The setting unit sets a third cut-off condition included in the cut-off condition when it is determined that the second discharge operation is being performed, the third interruption condition is a condition for switching the interruption unit to the interruption state before the third switch is switched to an off state when a current value flowing through the third branch path exceeds a third threshold current, The third threshold current is different from the second threshold current. The vehicle-mounted control device described in [6].

[0024] According to this configuration, the cutoff condition of the cutoff unit can be made different not only depending on whether a charging operation or a discharging operation is being performed, but also depending on whether a discharging operation or a second discharging operation is being performed.

[0025] [8] The setting unit outputs an abnormality signal when it determines that both the charging operation and the discharging operation are being performed. The vehicle-mounted control device according to [6] or [7].

[0026] According to this configuration, in a configuration in which it is not assumed that both charging and discharging operations will be performed in parallel, it is possible to notify the outside of an abnormality that both charging and discharging operations are being performed.

[0027] [9] The in-vehicle system includes a specific load that is different from the transmission / reception unit and receives power from the power storage unit, and a specific branch path that is provided between the specific load and the common path and is electrically connected to the common path, Furthermore, a temperature fuse is provided in the specific branch path and is blown when the blowout temperature is exceeded. An in-vehicle control device according to any one of [1] to [8].

[0028] According to this configuration, when a ground fault occurs in the specific load, it is easy to prevent the influence of the ground fault from reaching the power storage unit and the power transfer unit.

[0029] First Embodiment The in-vehicle system 100 shown in FIG. 1 is a system mounted on a vehicle 101, and has a storage unit 90, a connection unit 91, a first load 92, a second load 93, an external ECU 94, a common path 80, a first branch path 81, a second branch path 82, a third branch path 83, and an in-vehicle control device 1.

[0030] The power storage unit 90 is a battery such as a lithium ion battery.

[0031] The connection unit 91 corresponds to an example of a first transfer unit. The connection unit 91 is, for example, a charging inlet, and is exposed to the outside of the vehicle 101 when a cover of a DC charging port is opened. A charging plug 111 is connected to the connection unit 91. As a result, the connection unit 91 is connected to the external power source 110 via a charging cable 112, and power is supplied from the external power source 110. The connection unit 91 can supply the power supplied from the external power source 110 to the power storage unit 90 via the first branch path 81 and the common path 80.

[0032] The first load 92 corresponds to an example of the second transfer unit. The first load 92 is, for example, a motor. The motor is, for example, a driving motor when the vehicle 101 is an electric vehicle or a hybrid vehicle. The first load 92 receives electric power based on the power storage unit 90 via the common path 80 and the second branch path 82.

[0033] The second load 93 corresponds to an example of the third transmitting / receiving unit. The second load 93 is, for example, a high-voltage auxiliary device, and more specifically, an air conditioner, a heater, etc. The second load 93 receives electric power based on the power storage unit 90 via the common path 80 and the third branch path 83.

[0034] The common path 80 is provided between the power storage unit 90 and a plurality of transfer units (in this embodiment, the connection unit 91, the first load 92, and the second load 93). The common path 80 is a discharge path from the power storage unit 90 and a charge path to the power storage unit 90. The common path 80 is electrically connected to the power storage unit 90.

[0035] The first branch path 81 is provided between the power storage unit 90 and the connection unit 91, and is electrically connected to the common path 80. The first branch path 81 is a path that guides power supplied from the connection unit 91 (i.e., the external power source 110) to the common path 80. When charging the power storage unit 90, the external power source 110 is connected to the connection unit 91.

[0036] The second branch path 82 is provided between the power storage unit 90 and the first load 92, and is electrically connected to the common path 80. The second branch path 82 is a path that guides the power from the common path 80 to the first load 92.

[0037] The third branch path 83 is provided between the power storage unit 90 and the second load 93, and is electrically connected to the common path 80. The third branch path 83 is a path that guides the power from the common path 80 to the second load 93.

[0038] The in-vehicle control device 1 is a device that is mounted on a vehicle 101 and used in an in-vehicle system 100. The in-vehicle control device 1 includes a first switch 11, a second switch 12, a third switch 13, a breaker 14, current detectors 15, 16, and 17, and an ECU 20.

[0039] In this embodiment, the first switch 11, the second switch 12, and the third switch 13 are mechanical switches, but may be semiconductor switches such as FETs. The first switch 11 is provided in a first branch path 81. The second switch 12 is provided in a second branch path 82. The third switch 13 is provided in a third branch path 83. The first switch 11, the second switch 12, and the third switch 13 are each controlled by an external ECU 94.

[0040] The interrupter 14 is provided in the common path 80. The interrupter 14 has a function of switching from a conducting state in which the common path 80 is energized to a blocking state in which the common path 80 is blocked. In this embodiment, the interrupter 14 is a semiconductor switch such as a FET, but may be a mechanical switch. The interrupter 14 is in a conducting state when in an on state, and in a blocking state when in an off state. Alternatively, the interrupter 14 may be a circuit breaker that physically cuts off the path when a control signal is given. More specifically, the interrupter 14 may be a pyrotechnic circuit breaker (e.g., a pyro-fuse (PYROFUSE (registered trademark)) that generates an explosion when a drive current is input, and physically cuts off the path by moving a displacement part by the explosion. The interrupter 14 is controlled by the ECU 20.

[0041] The current detection units 15, 16, and 17 are, for example, known current detection circuits. The current detection unit 15 detects the current value of the current flowing through the first branch path 81. The current detection unit 15 has, for example, a shunt resistor provided in the first branch path 81 and a differential amplifier circuit that amplifies and outputs the voltage across the shunt resistor. The current detection unit 16 detects the current value of the current flowing through the second branch path 82. The current detection unit 16 has, for example, a shunt resistor provided in the second branch path 82 and a differential amplifier circuit that amplifies and outputs the voltage across the shunt resistor. The current detection unit 17 detects the current value of the current flowing through the third branch path 83. The current detection unit 17 has, for example, a shunt resistor provided in the third branch path 83 and a differential amplifier circuit that amplifies and outputs the voltage across the shunt resistor. The detection values ​​of the current detection units 15, 16, and 17 are input to the ECU 20 and the external ECU 94, respectively.

[0042] The ECU 20 has a control unit 21 and a setting unit 22. The control unit 21 switches the cutoff unit 14 from a permissive state to a cutoff state when a cutoff condition is met. The setting unit 22 sets the cutoff condition. The setting unit 22 can set the cutoff condition based on whether a charging operation or a first discharging operation is being performed. The charging operation is an operation of causing a charging current based on power from the connection unit 91 (i.e., the external power source 110) to flow to the power storage unit 90 when the first switch 11 is in an on state. The first discharging operation is an operation of causing a discharging current to flow from the power storage unit 90 to the first load 92 when the second switch 12 is in an on state.

[0043] The charging operation and the first discharging operation are performed as follows. The cutoff unit 14 is usually in a permissive state, and switches to a cutoff state when an overcurrent occurs. That is, the charging operation is performed by electrically connecting the external power supply 110 to the first branch path 81 via the connection unit 91 and switching the first switch 11 to the on state. The first discharging operation is an operation in which a discharging current flows from the power storage unit 90 to the first load 92 when the second switch 12 is in the on state. The first discharging operation is performed by switching the second switch 12 to the on state.

[0044] Setting unit 22 can set the interruption condition based on whether the first discharge operation or the second discharge operation is being performed. The second discharge operation is an operation in which a discharge current flows from power storage unit 90 to second load 93 when third switch 13 is in the on state. The second discharge operation is performed when third switch 13 is switched to the on state.

[0045] The setting unit 22 determines whether the charging operation, the first discharging operation, or the second discharging operation is being performed based on whether the first switch 11, the second switch 12, and the third switch 13 are in an on state or an off state. The setting unit 22 can determine whether the first switch 11, the second switch 12, and the third switch 13 are in an on state or an off state by receiving a signal indicating whether the first switch 11, the second switch 12, and the third switch 13 are in an on state or an off state from the external ECU 94. The setting unit 22 determines that the charging operation is being performed when it determines that the first switch 11 is in an on state, determines that the first discharging operation is being performed when it determines that the second switch 12 is in an on state, and determines that the second discharging operation is being performed when it determines that the third switch 13 is in an on state.

[0046] The cutoff condition includes a first cutoff condition, a second cutoff condition, and a third cutoff condition. The setting unit 22 sets the first cutoff condition when it is determined that the charging operation is being performed. The first cutoff condition is a condition for switching the cutoff unit 14 to the cutoff state before the first switch 11 when the current value of the current flowing through the first branch path 81 exceeds the first threshold current. Furthermore, the setting unit 22 sets the second cutoff condition when it is determined that the first discharging operation is being performed. The second cutoff condition is a condition for switching the cutoff unit 14 to the cutoff state before the second switch 12 when the current value of the current flowing through the second branch path 82 exceeds the second threshold current. Furthermore, the setting unit 22 sets the third cutoff condition when it is determined that the second discharging operation is being performed. The third cutoff condition is a condition for switching the cutoff unit 14 to the cutoff state before the third switch 13 when the current value of the current flowing through the third branch path 83 exceeds the third threshold current. The second threshold current is greater than the first threshold current. The second threshold current and the third threshold current are different from each other. The third threshold current may be smaller or larger than the first threshold current.

[0047] The first interruption condition is determined whether it is met based on the first interruption characteristic. More specifically, the first interruption condition is determined whether it is met based on the first interruption characteristic and the current value of the current flowing through the first branch path 81. The second interruption condition is determined whether it is met based on the second interruption characteristic. More specifically, the second interruption condition is determined whether it is met based on the second interruption characteristic and the current value of the current flowing through the second branch path 82. The third interruption condition is determined whether it is met based on the third interruption characteristic. More specifically, the third interruption condition is determined whether it is met based on the third interruption characteristic and the current value of the current flowing through the third branch path 83.

[0048] The first switch 11 is switched to the off state based on the first switch cut-off characteristic. More specifically, the first switch 11 is switched to the off state based on the first switch cut-off characteristic and the current value of the current flowing through the first branch path 81. The second switch 12 is switched to the off state based on the second switch cut-off characteristic. More specifically, the second switch 12 is switched to the off state based on the second switch cut-off characteristic and the current value of the current flowing through the second branch path 82. The third switch 13 is switched to the off state based on the third switch cut-off characteristic. More specifically, the third switch 13 is switched to the off state based on the third switch cut-off characteristic and the current value of the current flowing through the third branch path 83.

[0049] The first cut-off characteristic, the second cut-off characteristic, the third cut-off characteristic, the first switch cut-off characteristic, the second switch cut-off characteristic, and the third switch cut-off characteristic are correspondence data indicating the correspondence between the current flow time and the current value, as shown in Figs. 2 to 4. The correspondence data is data that defines how long a state exceeding a certain current value should continue before switching to the OFF state. The correspondence data may be an arithmetic expression such as a function, or may be a table. For example, a plurality of current values ​​for judgment are determined in advance, and a timer corresponding to the current value for judgment is operated each time the actual current value exceeds the current value for judgment, and the state is switched to the OFF state when the operation time of the timer reaches the current flow time corresponding to the current value for judgment. Conversely, if the actual current value falls below the current value for judgment before the current flow time is reached, the timer is reset.

[0050] 2, the current flow time of the first interruption characteristic corresponds to a longer time than that of the first switch interruption characteristic for a current value equal to or less than the first threshold current, and corresponds to a shorter time than that of the first switch interruption characteristic for a current value exceeding the first threshold current. Therefore, in a state in which the first interruption condition is set, when the current value of the current flowing through the first branch path 81 exceeds the first threshold current, the control unit 21 switches the interruption unit 14 to the interruption state before the first switch 11.

[0051] 3, the current flow time of the second cutoff characteristic corresponds to a longer time than that of the second switch cutoff characteristic for a current value equal to or less than the second threshold current, and corresponds to a shorter time than that of the second switch cutoff characteristic for a current value exceeding the second threshold current. Therefore, in a state in which the second cutoff condition is set, when the current value of the current flowing through the second branch path 82 exceeds the second threshold current, the control unit 21 switches the cutoff unit 14 to the cutoff state before the second switch 12.

[0052] 4, the current flow time of the third cutoff characteristic corresponds to a longer time than that of the third switch cutoff characteristic for a current value equal to or less than the third threshold current, and corresponds to a shorter time than that of the third switch cutoff characteristic for a current value exceeding the third threshold current. Therefore, in a state in which the third cutoff condition is set, when the current value flowing through the third branch path 83 exceeds the third threshold current, the control unit 21 switches the cutoff unit 14 to the cutoff state before the third switch 13.

[0053] The ECU 20 is capable of communicating with the external ECU 94. When the setting unit 22 determines that both the charging operation and the first discharging operation are being executed, the setting unit 22 outputs an abnormality signal indicating that an abnormality has occurred to the external ECU 94. In addition, when the control unit 21 determines that the cutoff condition is satisfied, the control unit 21 also outputs an abnormality signal indicating that an abnormality has occurred to the external ECU 94.

[0054] The setting unit 22 executes the control shown in FIG. 5. The control shown in FIG. 5 is started, for example, when the ECU 20 is started, and is resumed immediately after the control ends. At the start, the cutoff unit 14 is set to an allowable state. In the control shown in FIG. 5, first, in step S10, it is determined whether or not a charging operation is being performed. When it is determined that a charging operation is not being performed (No in step S10), the setting unit 22 determines whether or not a first discharging operation is being performed in step S11. When it is determined that a first discharging operation is not being performed (No in step S11), the setting unit 22 determines whether or not a second discharging operation is being performed in step S12. When it is determined that a second discharging operation is not being performed (No in step S12), the setting unit 22 returns to step S10. That is, the setting unit 22 repeats steps S11, S12, and S13 until any one of the charging operation, the first discharging operation, and the second discharging operation is performed.

[0055] If the setting unit 22 determines that the charging operation is being performed (Yes in step S10), it determines in step S13 whether the first discharging operation or the second discharging operation is being performed. If the setting unit 22 determines that neither the first discharging operation nor the second discharging operation is being performed (No in step S13), it sets a first cutoff condition in step S14. If the setting unit 22 determines that the first discharging operation or the second discharging operation is being performed (Yes in step S13), it outputs an abnormality signal in step S15. In other words, the setting unit 22 outputs an abnormality signal when it determines that the first discharging operation or the second discharging operation is being performed despite determining that the charging operation is being performed.

[0056] When the setting unit 22 determines that the first discharge operation is being performed (Yes in step S11), it determines whether or not the second discharge operation is being performed in step S16. When the setting unit 22 determines that the second discharge operation is not being performed (No in step S16), it sets a second cutoff condition in step S17. When the setting unit 22 determines that the second discharge operation is being performed (Yes in step S16), it outputs an abnormality signal in step S15. That is, the setting unit 22 outputs an abnormality signal when it determines that both the first discharge operation and the second discharge operation are being performed. When the setting unit 22 determines that the second discharge operation is being performed in step S12 (Yes in step S12), it sets a third cutoff condition in step S18.

[0057] The following description relates to the effects of the first embodiment. The in-vehicle system 100 can execute a charging operation by switching the first switch 11 to the on state, and can execute a discharging operation by switching the second switch 12 to the on state. The in-vehicle control device 1 used in this in-vehicle system 100 can set a cutoff condition based on whether the charging operation or the first discharging operation is being executed. Therefore, the in-vehicle control device 1 can appropriately execute overcurrent protection both during charging and discharging.

[0058] Furthermore, the setting unit 22 determines whether a charging operation or a discharging operation is being performed, based on whether the first switch 11 and the second switch 12 are in the on state or the off state. According to this configuration, it is possible to simplify the determination as to whether a charging operation or a discharging operation is being performed.

[0059] Furthermore, when it is determined that a charging operation is being performed, the setting unit 22 sets a first cut-off condition for switching the cut-off unit 14 to the cut-off state before the first switch 11 when the current value of the current flowing through the first branch path 81 exceeds a first threshold current. Also, when it is determined that a first discharging operation is being performed, the setting unit 22 sets a second cut-off condition for switching the cut-off unit 14 to the cut-off state before the second switch 12 when the current value of the current flowing through the second branch path 82 exceeds a second threshold current. Also, the second threshold current is larger than the first threshold current. According to this in-vehicle control device 1, when the current value of the current flowing through the first branch path 81 exceeds the first threshold current during the charging operation, the cutoff unit 14 can be switched to the cutoff state before the first switch 11. Also, when the current value of the current flowing through the second branch path 82 exceeds the second threshold current during the first discharging operation, the cutoff unit 14 can be switched to the cutoff state before the second switch 12. Moreover, the second threshold current is larger than the first threshold current. Therefore, the first discharging operation in which a larger current flows compared to the charging operation can be tolerated. The current value during the charging operation is easy to predict, but the current value during the first discharging operation is likely to change depending on the usage state. For example, in an electric vehicle or a hybrid vehicle, a high load is likely to be applied during acceleration or climbing a slope. According to this configuration, even if a high load is applied during the first discharging operation and a current exceeding the first threshold current flows, the first discharging operation can be continued without switching the cutoff unit 14 to the cutoff state.

[0060] Furthermore, the current flow time of the first cutoff characteristic corresponds to a longer time than the first switch cutoff characteristic for current values ​​equal to or less than the first threshold current, and corresponds to a shorter time than the first switch cutoff characteristic for current values ​​exceeding the first threshold current. Moreover, the current flow time of the second cutoff characteristic corresponds to a longer time than the second switch cutoff characteristic for current values ​​equal to or less than the second threshold current, and corresponds to a shorter time than the second switch cutoff characteristic for current values ​​exceeding the second threshold current. According to this configuration, when the current value of the current flowing through the first branch path 81 exceeds the first threshold current during the charging operation, the cutoff unit 14 can be switched to the cutoff state before the first switch 11 based on the current-flow time. Also, when the first discharging operation is being performed, when the current value of the current flowing through the second branch path 82 exceeds the second threshold current, the cutoff unit 14 can be switched to the cutoff state before the second switch 12 based on the current-flow time.

[0061] Furthermore, when it is determined that the second discharge operation is being performed, the setting unit 22 sets a third interruption condition for switching the interruption unit 14 to the interruption state before the third switch 13 when the value of the current flowing through the third branch path 83 exceeds a third threshold current. The third threshold current is different from the second threshold current. According to this configuration, the cutoff condition of the cutoff unit 14 can be made different not only depending on whether the charging operation is being performed or the first discharging operation is being performed, but also depending on whether the first discharging operation is being performed or the second discharging operation is being performed.

[0062] Furthermore, when it is determined that both the charging operation and the first discharging operation are being executed, the setting unit 22 outputs an abnormality signal. According to this configuration, in a configuration in which it is not assumed that both the charging operation and the first discharging operation are operating in parallel, it is possible to notify the outside of an abnormality that both the charging operation and the first discharging operation are being executed.

[0063] <Second embodiment> The second embodiment differs from the first embodiment mainly in that the specific load is connected to the common path via a thermal fuse. In the following, the same components as those in the first embodiment are denoted by the same reference numerals and will not be described in detail.

[0064] The in-vehicle system 200 shown in FIG. 6 is a system mounted on a vehicle 201, and has a power storage unit 90, a connection unit 91, a load 292, a specific load 293, an external ECU 94, a common path 80, a first branch path 81, a second branch path 82, a specific branch path 283, and an in-vehicle control device 1B.

[0065] The load 292 corresponds to an example of the second transmitting / receiving unit. The load 292 is, for example, a motor. The motor is, for example, a driving motor when the vehicle 201 is an electric vehicle or a hybrid vehicle. The load 292 receives electric power based on the power storage unit 90 via the common path 80 and the second branch path 82.

[0066] The specific load 293 is, for example, a high-voltage auxiliary device, and more specifically, an air conditioner, a heater, etc. The specific load 293 receives electric power based on the power storage unit 90 via the common path 80 and the specific branch path 283.

[0067] The common path 80 is provided between the power storage unit 90 and a plurality of transmitting / receiving units (in this embodiment, the connection unit 91, the load 292, and the specific load 293).

[0068] The second branch path 82 is provided between the power storage unit 90 and the load 292, and is electrically connected to the common path 80. The second branch path 82 is a path that guides the power from the common path 80 to the load 292.

[0069] The specific branch path 283 is provided between the power storage unit 90 and the specific load 293, and is electrically connected to the common path 80. The specific branch path 283 is a path that guides the power from the common path 80 to the specific load 293.

[0070] The in-vehicle control device 1B is a device that is mounted on a vehicle 201 and used in an in-vehicle system 200. The in-vehicle control device 1B includes a first switch 11, a second switch 12, a thermal fuse 213, a breaker 214, current detectors 15 and 16, and an ECU 20.

[0071] The thermal fuse 213 is provided in the specific branch path 283, and is blown when the temperature exceeds a melting temperature. When the thermal fuse 213 is blown, the flow of current between the common path 80 and the specific load 293 is interrupted.

[0072] The interrupter 214 is provided in the common path 80. The interrupter 214 has a function of switching from an energized state in which the common path 80 is energized to an interrupted state in which the common path 80 is interrupted. In this embodiment, the interrupter 214 is a circuit breaker that physically cuts off the path when a control signal is given to it. More specifically, the interrupter 214 is a pyrotechnic circuit breaker (e.g., a pyrofuse (PYROFUSE (registered trademark)) that generates an explosion when a drive current is input, and physically cuts off the path by moving a displacement part due to this explosion. The interrupter 214 is controlled by the ECU 20.

[0073] The ECU 20 has a control unit 21 and a setting unit 22. The control unit 21 switches the cutoff unit 214 from a permissive state to a cutoff state when a cutoff condition is met. The setting unit 22 sets the cutoff condition. The setting unit 22 can set the cutoff condition based on whether a charging operation or a discharging operation is being performed. The charging operation is an operation of causing a charging current based on power from the connection unit 91 (i.e., the external power source 110) to flow to the power storage unit 90 when the first switch 11 is in an on state. The discharging operation is an operation of causing a discharging current to flow from the power storage unit 90 to the load 292 when the second switch 12 is in an on state.

[0074] The charging operation and the discharging operation are performed as follows. The cutoff unit 214 is usually in a permissive state, and switches to a cutoff state when an overcurrent occurs. That is, the charging operation is performed when the external power source 110 is electrically connected to the first branch path 81 via the connection unit 91, and the first switch 11 is switched to the on state. The discharging operation is an operation in which a discharging current flows from the power storage unit 90 to the load 292 when the second switch 12 is in the on state. The discharging operation is performed when the second switch 12 is switched to the on state.

[0075] The setting unit 22 determines whether a charging operation or a discharging operation is being performed based on whether the first switch 11 and the second switch 12 are in an on state or an off state. The setting unit 22 can determine whether the first switch 11 and the second switch 12 are in an on state or an off state by receiving a signal indicating whether the first switch 11 and the second switch 12 are in an on state or an off state from the external ECU 94. The setting unit 22 determines that a charging operation is being performed when it is determined that the first switch 11 is in an on state, and determines that a discharging operation is being performed when it is determined that the second switch 12 is in an on state.

[0076] The cutoff condition includes a first cutoff condition and a second cutoff condition. The setting unit 22 sets the first cutoff condition when it is determined that a charging operation is being performed. The first cutoff condition is a condition for switching the cutoff unit 214 to the cutoff state before the first switch 11 when the current value of the current flowing through the first branch path 81 exceeds a first threshold current. Furthermore, the setting unit 22 sets the second cutoff condition when it is determined that a discharging operation is being performed. The second cutoff condition is a condition for switching the cutoff unit 214 to the cutoff state before the second switch 12 when the current value of the current flowing through the second branch path 82 exceeds a second threshold current. The second threshold current is greater than the first threshold current.

[0077] The first interruption condition is determined whether it is met based on the first interruption characteristic. More specifically, the first interruption condition is determined whether it is met based on the first interruption characteristic and the current value of the current flowing through the first branch path 81. The second interruption condition is determined whether it is met based on the second interruption characteristic. More specifically, the second interruption condition is determined whether it is met based on the second interruption characteristic and the current value of the current flowing through the second branch path 82.

[0078] The first switch 11 is switched to the off state based on the first switch blocking characteristic. More specifically, the first switch 11 is switched to the off state based on the first switch blocking characteristic and the current value of the current flowing through the first branch path 81. The second switch 12 is switched to the off state based on the second switch blocking characteristic. More specifically, the second switch 12 is switched to the off state based on the second switch blocking characteristic and the current value of the current flowing through the second branch path 82.

[0079] The first cut-off characteristic, the second cut-off characteristic, the first switch cut-off characteristic, and the second switch cut-off characteristic are as described in the first embodiment.

[0080] The ECU 20 is capable of communicating with the external ECU 94. When the setting unit 22 determines that both the charging operation and the discharging operation are being executed, it outputs an abnormality signal indicating that an abnormality has occurred to the external ECU 94. In addition, when the control unit 21 determines that the cutoff condition is satisfied, it also outputs an abnormality signal indicating that an abnormality has occurred to the external ECU 94.

[0081] The setting unit 22 executes the control shown in Fig. 7. The control shown in Fig. 7 is started, for example, when the ECU 20 is started, and is resumed immediately after the control ends. In addition, at the start, the cutoff unit 214 is in an allowable state. In the control shown in Fig. 7, first, in step S210, it is determined whether or not a charging operation is being performed. If the setting unit 22 determines that a charging operation is not being performed (No in step S210), it determines in step S211 whether or not a discharging operation is being performed. If the setting unit 22 determines that a discharging operation is not being performed (No in step S211), it returns to step S210. That is, the setting unit 22 repeats steps S211 and S212 until a charging operation or a discharging operation is performed.

[0082] If setting unit 22 determines that a charging operation is being performed (Yes in step S210), it determines in step S213 whether or not a discharging operation is being performed. If setting unit 22 determines that a discharging operation is not being performed (No in step S213), it sets a first cutoff condition in step S214. If setting unit 22 determines that a first discharging operation is being performed (Yes in step S213), it outputs an abnormality signal in step S215. In other words, setting unit 22 outputs an abnormality signal when it determines that a discharging operation is being performed despite determining that a charging operation is being performed.

[0083] When it is determined that the discharging operation is being performed (Yes in step S211), setting unit 22 sets a second cutoff condition in step S217.

[0084] The following description relates to the effects of the second embodiment. The in-vehicle system 200 can execute a charging operation by switching the first switch 11 to the on state, and can execute a discharging operation by switching the second switch 12 to the on state. The in-vehicle control device 1B used in the in-vehicle system 200 can set a cutoff condition based on whether a charging operation or a discharging operation is being executed. Therefore, the in-vehicle control device 1B can appropriately execute overcurrent protection both during charging and discharging.

[0085] Furthermore, the in-vehicle control device 1B has a thermal fuse 213 that is provided in the specific branch path 283 and melts down when the melting temperature is exceeded. With this configuration, when a ground fault occurs in the specific load 293, it is easy to prevent the influence of the ground fault from reaching the power storage unit 90, the connection unit 91, and the load 292.

[0086] <Other embodiments> The present disclosure is not limited to the embodiments described above and in the drawings. For example, the features of the above or later described embodiments can be combined in any combination within a range that does not contradict. In addition, any feature of the above or later described embodiments can be omitted unless it is clearly stated as essential. Furthermore, the above-mentioned embodiment may be modified as follows.

[0087] In the first embodiment, the ECU recognizes the on / off states of the first switch, the second switch, and the third switch by receiving a signal indicating the on / off states of the first switch, the second switch, and the third switch from an external ECU, and recognizing the on / off states based on the signal. However, other configurations are also possible. For example, the control unit may control the first switch, the second switch, and the third switch, and recognize the on / off states of the first switch, the second switch, and the third switch based on the control state of the control unit. Alternatively, the voltage values ​​and current values ​​of the first branch path, the second branch path, and the third branch path may be detected, and the on / off states of the first switch, the second switch, and the third switch may be recognized based on the detected values. Furthermore, a combination of these configurations may also be used.

[0088] In the second embodiment, the ECU recognizes the on / off states of the first switch and the second switch by receiving a signal indicating the on / off states of the first switch and the second switch from an external ECU, and recognizing the on / off states based on the signal. However, other configurations are also possible. For example, the control unit may control the first switch and the second switch, and recognize the on / off states of the first switch and the second switch based on the control state of the control unit. Alternatively, the voltage value or current value of the first branch path and the second branch path may be detected, and the on / off states of the first switch and the second switch may be recognized based on the detected values. Furthermore, a combination of these configurations may also be used.

[0089] In the first embodiment, the abnormality signal is output when it is determined that the first discharging operation or the second discharging operation is being performed while the charging operation is being performed, but the abnormality signal may be output when it is determined that both the charging operation and the first discharging operation are being performed, and the abnormality signal may not be output even when it is determined that both the charging operation and the second discharging operation are being performed. In other words, the abnormality signal may be output only when it is determined that the first discharging operation of the first and second discharging operations has been performed while it is determined that the charging operation is being performed.

[0090] In the above first embodiment, the configuration was such that an abnormality signal was output when it was determined that both the first discharge operation and the second discharge operation were being executed, but the configuration may also be such that an abnormality signal is not output even if both the first discharge operation and the second discharge operation are being executed.

[0091] In the first embodiment, the current values ​​flowing through the first branch path, the second branch path, and the third branch path are detected by the current detection units provided in the first branch path, the second branch path, and the third branch path, respectively. However, a current detection unit may be provided in the common path, and the current values ​​flowing through the first branch path, the second branch path, and the third branch path may be detected based on this current detection unit. For example, the current value detected during the execution of the first operation may be detected as the current value flowing through the first branch path. The current value detected during the execution of the second operation may be detected as the current value flowing through the second branch path. The current value detected during the execution of the third operation may be detected as the current value flowing through the third branch path. With this configuration, the number of current detection units can be reduced.

[0092] In the second embodiment, the current values ​​flowing through the first branch path and the second branch path are detected by current detection units provided in the first branch path and the second branch path, respectively. However, a current detection unit may be provided in the common path, and the current values ​​flowing through the first branch path and the second branch path may be detected based on this current detection unit. For example, the current value detected during the execution of the first operation may be detected as the current value flowing through the first branch path. The current value detected during the execution of the second operation may be detected as the current value flowing through the second branch path. With this configuration, the number of current detection units can be reduced.

[0093] In each of the above embodiments, the cutoff condition is a condition for determining whether it is successful or not based on the correspondence between the current flow time and the current value, but it may be another condition. For example, the cutoff condition may be that a predetermined cutoff threshold has been exceeded. More specifically, the first cutoff condition set during the execution of the charging operation may be that the current value of the first branch path has exceeded the first cutoff threshold, and the second cutoff condition set during the execution of the discharging operation may be that the current value of the second branch path has exceeded the second cutoff threshold. The first cutoff threshold may be a value greater than the second cutoff threshold.

[0094] In each of the above embodiments, the first operation is a charging operation and the second operation is a discharging operation, but other configurations may be used. For example, both the first operation and the second operation may be discharging operations.

[0095] In each of the above embodiments, the second threshold current is larger than the first threshold current, but the second threshold current may be smaller than the first threshold current.

[0096] It should be noted that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is not limited to the embodiments disclosed herein, and is intended to include all modifications within the scope indicated by the claims or within the scope equivalent to the claims. [Explanation of symbols]

[0097] 1: Vehicle control device 1B: Vehicle control device 11: First switch 12: Second switch 13: Third switch 14: Breaking section 15: Current detection section 16: Current detection section 17: Current detection section 18: Current detection section 20: ECU 21: Control section 22: Setting section 80: Common route 81: First turnoff 82: Second fork 83: Third fork 90: Power storage unit 91: Connection section (first receiving section) 92: 1st load (2nd transfer section, load) 93: 2nd load (3rd transfer section) 94: External ECU 100: In-vehicle systems 101: Vehicle 110: External power supply 111: Charging plug 112: Charging cable 200: In-vehicle systems 201: Vehicle 213: Thermal fuse 214: Breaking section 283: Specific intersection 292: Load (2nd transfer section) 293:Specific load

Claims

1. an in-vehicle control device for use in an in-vehicle system having a power storage unit, a plurality of transfer units for transferring power between the power storage unit and the power storage unit, a common path provided between the power storage unit and the plurality of transfer units, a first branch path provided between a first transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a second branch path provided between a second transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a first switch provided in the first branch path, a second switch provided in the second branch path, and a cutoff unit configured to switch from a permissive state that permits a current flow in the common path to a cutoff state that cuts off the current flow, a control unit that switches the interrupter from the permitting state to the interrupting state when an interrupting condition is satisfied; A setting unit for setting the interruption condition; having the setting unit sets the cut-off condition based on which of a first operation of transferring power between the power storage unit and the first transfer unit when the first switch is in an on state and a second operation of transferring power between the power storage unit and the second transfer unit when the second switch is in an on state is being executed; The setting unit sets a first cut-off condition included in the cut-off condition when it is determined that the first operation is being performed, and sets a second cut-off condition included in the cut-off condition when it is determined that the second operation is being performed; the first interruption condition is a condition for switching the interruption unit to the interruption state before the first switch is switched to an off state when a current value of a current flowing through the first branch path exceeds a first threshold current, the second interruption condition is a condition for switching the interruption unit to the interruption state before the second switch is switched to an off state when a current value of the current flowing through the second branch path exceeds a second threshold current different from the first threshold current, the first switch is switched to an off state based on a first switch blocking characteristic; the second switch is switched to an off state based on a second switch blocking characteristic; The first interruption condition is determined based on a first interruption characteristic; The second interruption condition is determined based on a second interruption characteristic; the first switch blocking characteristic, the second switch blocking characteristic, the first blocking characteristic, and the second blocking characteristic are defined by correspondence data indicating a correspondence relationship between a current application time and a current value, The current flow time of the first cutoff characteristic corresponds to a time longer than that of the first switch cutoff characteristic for a current value equal to or less than the first threshold current, and corresponds to a time shorter than that of the first switch cutoff characteristic for a current value exceeding the first threshold current, The current flow time of the second cutoff characteristic corresponds to a time longer than that of the second switch cutoff characteristic for a current value equal to or less than the second threshold current, and corresponds to a time shorter than that of the second switch cutoff characteristic for a current value exceeding the second threshold current. In-vehicle control device.

2. The setting unit determines whether the first operation or the second operation is being executed based on whether the first switch and the second switch are in an on state or an off state. The vehicle-mounted control device according to claim 1 .

3. the first transmitting / receiving unit is a connection unit that is connected to an external power source via a charging cable, The second transfer unit is a load, the common path is a discharge path from the power storage unit and a charge path to the power storage unit, the first branch path is a path that guides the power supplied via the connection portion to the common path, the second branch path is a path that guides the power from the common path to the load, The setting unit sets the cutoff condition based on whether a charging operation is being performed in which a charging current supplied via the connection unit flows to the power storage unit when the first switch is in an on state, or a discharging operation is being performed in which a discharging current flows from the power storage unit to the load when the second switch is in an on state. The vehicle-mounted control device according to claim 1 or 2.

4. The second threshold current is greater than the first threshold current. The vehicle-mounted control device according to claim 3 .

5. the in-vehicle system includes a third branch path that is provided between a third transfer unit among the plurality of transfer units and the common path and is electrically connected to the common path, and a third switch that is provided in the third branch path; the third transfer portion is a second load, a second discharging operation is performed in which a discharging current flows from the power storage unit to the second load when the third switch is in an on state; The setting unit sets a third cut-off condition included in the cut-off condition when it is determined that the second discharge operation is being performed, the third interruption condition is a condition for switching the interruption unit to the interruption state before the third switch is switched to an off state when a current value flowing through the third branch path exceeds a third threshold current, The third threshold current is different from the second threshold current. The vehicle-mounted control device according to claim 4.

6. The setting unit outputs an abnormality signal when it determines that both the charging operation and the discharging operation are being performed. The vehicle-mounted control device according to claim 4.

7. the in-vehicle system includes a specific load that is different from the transmitting / receiving unit and receives power from the power storage unit, and a specific branch path that is provided between the specific load and the common path and is electrically connected to the common path, Furthermore, a temperature fuse is provided in the specific branch path and is blown when the blowout temperature is exceeded. The vehicle-mounted control device according to claim 1 or 2.

8. an in-vehicle control device for use in an in-vehicle system having a power storage unit, a plurality of transfer units for transferring power between the power storage unit and the power storage unit, a common path provided between the power storage unit and the plurality of transfer units, a first branch path provided between a first transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a second branch path provided between a second transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a first switch provided in the first branch path, a second switch provided in the second branch path, and a cutoff unit configured to switch from a permissive state that permits a current flow in the common path to a cutoff state that cuts off the current flow, a control unit that switches the interrupter from the permitting state to the interrupting state when an interrupting condition is satisfied; A setting unit for setting the interruption condition; having the setting unit sets the cut-off condition based on which of a first operation of transferring power between the power storage unit and the first transfer unit when the first switch is in an on state and a second operation of transferring power between the power storage unit and the second transfer unit when the second switch is in an on state is being executed; the first transmitting / receiving unit is a connection unit that is connected to an external power source via a charging cable, The second transfer unit is a load, the common path is a discharge path from the power storage unit and a charge path to the power storage unit, the first branch path is a path that guides the power supplied via the connection portion to the common path, the second branch path is a path that guides the power from the common path to the load, the setting unit sets the cut-off condition based on whether a charging operation in which a charging current supplied via the connection unit flows to the power storage unit when the first switch is in an on state or a discharging operation in which a discharging current flows from the power storage unit to the load when the second switch is in an on state is being executed; The setting unit sets a first cut-off condition included in the cut-off condition when it is determined that the charging operation is being performed, and sets a second cut-off condition included in the cut-off condition when it is determined that the discharging operation is being performed; the first interruption condition is a condition for switching the interruption unit to the interruption state before the first switch is switched to an off state when a current value of a current flowing through the first branch path exceeds a first threshold current, the second interruption condition is a condition for switching the interruption unit to the interruption state before the second switch is switched to an off state when a current value of the current flowing through the second branch path exceeds a second threshold current, the second threshold current is greater than the first threshold current; the in-vehicle system includes a third branch path that is provided between a third transfer unit among the plurality of transfer units and the common path and is electrically connected to the common path, and a third switch that is provided in the third branch path; the third transfer portion is a second load, a second discharging operation is performed in which a discharging current flows from the power storage unit to the second load when the third switch is in an on state; The setting unit sets a third cut-off condition included in the cut-off condition when it is determined that the second discharge operation is being performed, the third interruption condition is a condition for switching the interruption unit to the interruption state before the third switch is switched to an off state when a current value flowing through the third branch path exceeds a third threshold current, The third threshold current is different from the second threshold current. In-vehicle control device.

9. an in-vehicle control device for use in an in-vehicle system having a power storage unit, a plurality of transfer units for transferring power between the power storage unit and the power storage unit, a common path provided between the power storage unit and the plurality of transfer units, a first branch path provided between a first transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a second branch path provided between a second transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a first switch provided in the first branch path, a second switch provided in the second branch path, and a cutoff unit configured to switch from a permissive state that permits a current flow in the common path to a cutoff state that cuts off the current flow, a control unit that switches the interrupter from the permitting state to the interrupting state when an interrupting condition is satisfied; A setting unit for setting the interruption condition; having the setting unit sets the cut-off condition based on which of a first operation of transferring power between the power storage unit and the first transfer unit when the first switch is in an on state and a second operation of transferring power between the power storage unit and the second transfer unit when the second switch is in an on state is being executed; the first transmitting / receiving unit is a connection unit that is connected to an external power source via a charging cable, The second transfer unit is a load, the common path is a discharge path from the power storage unit and a charge path to the power storage unit, the first branch path is a path that guides the power supplied via the connection portion to the common path, the second branch path is a path that guides the power from the common path to the load, the setting unit sets the cut-off condition based on whether a charging operation in which a charging current supplied via the connection unit flows to the power storage unit when the first switch is in an on state or a discharging operation in which a discharging current flows from the power storage unit to the load when the second switch is in an on state is being executed; The setting unit outputs an abnormality signal when it determines that both the charging operation and the discharging operation are being performed. In-vehicle control device.

10. an in-vehicle control device for use in an in-vehicle system having a power storage unit, a plurality of transfer units for transferring power between the power storage unit and the power storage unit, a common path provided between the power storage unit and the plurality of transfer units, a first branch path provided between a first transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a second branch path provided between a second transfer unit of the plurality of transfer units and the common path and electrically connected to the common path, a first switch provided in the first branch path, a second switch provided in the second branch path, and a cutoff unit configured to switch from a permissive state that permits a current flow in the common path to a cutoff state that cuts off the current flow, a control unit that switches the interrupter from the permitting state to the interrupting state when an interrupting condition is satisfied; A setting unit for setting the interruption condition; having the setting unit sets the cut-off condition based on which of a first operation of transferring power between the power storage unit and the first transfer unit when the first switch is in an on state and a second operation of transferring power between the power storage unit and the second transfer unit when the second switch is in an on state is being executed; the in-vehicle system includes a specific load that is different from the transmitting / receiving unit and receives power from the power storage unit, and a specific branch path that is provided between the specific load and the common path and is electrically connected to the common path, Furthermore, a temperature fuse is provided in the specific branch path and is blown when the blowout temperature is exceeded. In-vehicle control device.

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