Energy storage device and control method for a power interruption device

Abstract

An energy storage device 50 for a vehicle includes a cell 60, a power interrupter 53 that interrupts the power of the cell 60, and a management device 120. When an abnormality of the cell 60 is detected during a travel of a vehicle 10, the management device 120 changes the control of the power interrupter 53 in accordance with a difference in a state of the traveling vehicle 10.

Description

Technical field

[0001] The present invention relates to the control of a power interruption device. State of the art

[0002] An energy storage device for starting or for an auxiliary machine in a vehicle may include a power interruption device such as a relay as a protective device. Patent Literature 1 discloses an energy storage device with a power interruption device incorporated therein. Patent Literature 2 discloses a battery control device that controls a battery of a vehicle.

[0003] The battery control device of Patent Literature 2 includes: a detection unit that detects the type of failure occurring in a battery; a judgment unit that judges whether a vehicle is near a stop point or whether a travel distance of the vehicle from the start to the stop of the vehicle is equal to or less than a threshold; and a control unit. When the judgment unit judges that the vehicle is near the stop point or judges that the travel distance of the vehicle from the start to the stop of the vehicle is equal to or less than the threshold, the control unit limits the input power or the output power according to the type of failure detected by the detection unit so that the vehicle can travel.When the judging unit judges that the vehicle is not near the stopping point or judges that the travel distance of the vehicle from the start to the stop of the vehicle is greater than the threshold, the control unit limits the input power or the output power according to the fault type detected by the detecting unit. Reference listPatent literature Patent Literature 1: Unexamined Japanese Patent Application Publication No. 2017-5985 Patent Literature 2: Unexamined Japanese Patent Application Publication No. 2021-72680 Description of the inventionProblem

[0004] When an abnormality such as overcharging or overcurrent occurs, a vehicle may cut off the power by opening a built-in power interruption device to protect the vehicle's energy storage device. However, if the power interruption device is opened while the vehicle is running, the power supply to a load (a driving system and an auxiliary system) of the vehicle may be cut off.

[0005] The need to maintain a power supply in a vehicle during driving varies depending on differences in the driving environment, driving speed, etc. Until now, there has been no research into how to control a power interruption device when a battery abnormality is detected during vehicle driving, taking into account the balance between battery protection and the priority of power supply to the vehicle, so there is room for improvement.

[0006] The present inventor intends to eliminate the above-described problems with the present invention. Problem solving

[0007] An energy storage device for a vehicle includes a cell, a current interruption device that interrupts the current of the cell, and a management device.

[0008] When an abnormality of the energy storage device is detected during the running of a vehicle, the management device changes the control of the power interruption device depending on a state of the running vehicle.

[0009] The present technique can be applied to a control method and a control program of a power interruption device. Effect of the invention

[0010] The present technique can control the power interruption device while balancing battery protection and power supply priority to a vehicle by changing the control of the power interruption device depending on the state of the running vehicle when an abnormality occurs in the power storage device. Therefore, measures corresponding to the situation, such as stopping the vehicle while prioritizing maximum battery protection or prioritizing safe evacuation of the vehicle while considering the vehicle situation instead of protecting the battery, can be taken. Brief description of the drawings Fig. 1 is a side view showing a vehicle. Fig. 2 is an exploded perspective view of an energy storage device. Fig. 3 is a cross-sectional view of a cell. Fig. 4 is a top view of the cell Fig. 5 is a block diagram showing an electrical configuration of the vehicle. Fig. 6 is a schematic view showing the distance to a destination and the remaining time. Fig. Figure 7 is a flowchart of optimal control of a power interruption device. Fig. Figure 8 is a flowchart of optimal control of a power interruption device. Fig. 9 is a schematic view showing a voltage range of an energy storage device. Description of embodiments

[0011] The following is a rough description of an energy storage device for a vehicle.

[0012] (1) An energy storage device according to an embodiment of the present invention comprises: a cell; a current interrupting device that interrupts the current of the cell; and a managing device.

[0013] When an abnormality of the energy storage device is detected during the running of a vehicle, the management device changes the control of the power interruption device depending on a state of the running vehicle.

[0014] The energy storage device according to an embodiment of the present invention changes, when an abnormality occurs in the energy storage device, the control of the power interrupting device depending on a difference in the state of a running vehicle, thereby enabling control of the power interrupting device in consideration of a balance between battery protection and a priority of power supply to the vehicle.

[0015] (2) In the energy storage device described in (1) above, the state of the vehicle may be a driving environment of the vehicle.

[0016] In the energy storage device described in (2) above, when the vehicle is stopped or driven in a place where parking of the vehicle is difficult, control may be performed in which power supply to the vehicle is prioritized over battery protection.

[0017] (3) In the energy storage device described in (1) above, the state of the vehicle may be a traveling speed of the vehicle.

[0018] In the energy storage device described in (3) above, when the traveling speed of the vehicle is high and time is required for stopping or parking the vehicle, control may be performed in which the power supply to the vehicle is prioritized over battery protection.

[0019] (4) In the energy storage device described in (1) above, the state of the vehicle may be a difference between the presence and absence of receiving disaster information.

[0020] In the energy storage device described in (4) above, control may be performed such that power supply to the vehicle is prioritized over battery protection when disaster information has been received and the emergency degree is high.

[0021] (5) In the energy storage device described in any one of (1) to (4) above, the management device may change a closed-state maintaining time of the power interruption device depending on the state of the vehicle.

[0022] In the energy storage device described in (5) above, after an abnormality of the energy storage device is detected, a time during which power is supplied from the energy storage device to the vehicle can be optimized depending on a difference in the state of the vehicle. <Erste Ausführungsform> 1. Vehicle configuration 10

[0023] Fig. 1 is a side view of a vehicle. A vehicle 10 includes an internal combustion engine 20 as a power source. Fig. 1 shows only an internal combustion engine 20 and an energy storage device 50 in the vehicle 10, while the other components of the vehicle 10 are not shown.

[0024] The energy storage device 50 mounted in the vehicle 10 serves to start the internal combustion engine or an auxiliary machine and, in this embodiment, has a nominal voltage of 12 V. A drive electric motor for propulsion and an energy storage device may be mounted in the vehicle 10 in addition to or instead of the internal combustion engine 20.

[0025] As in Fig. 2, the energy storage device 50 includes a battery pack 60, a monitoring board 100, and a receiving body 71.

[0026] The receiving body 71 includes a main body 73 and a lid body 74. The main body 73 and the lid body 74 are formed of a synthetic resin. The main body 73 has a cylindrical shape with a bottom. The main body 73 includes a bottom surface portion 75 and four side surface portions 76. The four side surface portions 76 form an opening portion 77 at an upper end of the main body 73.

[0027] The battery pack 60 and the monitoring board 100 are accommodated in the receiving body 71. The monitoring board 100 comprises various components mounted on a circuit board (a current interruption device 53, a voltage detector 110 and a management device 120, which are Fig. 4 etc.). As shown in Fig. For example, as shown in Figure 2, the monitoring board 100 is disposed above and adjacent to the battery pack 60. Alternatively, the monitoring board 100 may also be disposed adjacent to one side of the battery pack 60.

[0028] The lid body 74 closes the opening part 77 of the main body 73. An outer peripheral wall 78 is arranged around the lid body 74. The lid body 74 has a protruding part 79 that is substantially T-shaped in plan view. A positive electrode external terminal 51 is fixed to one corner part of a front part of the lid body 74, and a negative electrode external terminal 52 is fixed to the other corner part of the front part of the lid body 74. The monitoring board 100 may be accommodated in the lid body 74 (for example, in the protruding part 79) instead of in the main body 73 of the accommodation body 71.

[0029] The battery pack 60 comprises a plurality of cells 62. As in Fig. 3, the cell 62 houses an electrode body 83 in a rectangular parallelepiped-shaped casing 82 along with a non-aqueous electrolyte. The cell 62 is, for example, a lithium-ion secondary battery cell. The casing 82 includes a casing main body 84 and a lid 85 that closes an opening portion above the casing main body 84.

[0030] Although not shown in detail, the electrode body 83 includes a separator formed of a porous resin film and disposed between a negative electrode plate obtained by applying an active material to a base material of a copper foil and a positive electrode plate obtained by applying an active material to a base material of an aluminum foil.

[0031] All of these parts are tape-shaped and wound into a flat shape in a state where the positions of the negative electrode plate and the positive electrode plate are oppositely shifted relative to the separator. The electrode body 83 may also be of a laminated type instead of a wound type.

[0032] A positive electrode terminal 87 is connected to the positive electrode plate via a positive electrode current collector 86, and a negative electrode terminal 89 is connected to the negative electrode plate via a negative electrode current collector 88. The positive electrode current collector 86 and the negative electrode current collector 88 each include a base portion 90 having a flat plate shape and a leg portion extending from the base portion 90. A through hole is formed in the base portion 90.

[0033] The positive electrode terminal 87 and the negative electrode terminal 89 are each configured by a terminal main body part 92 and a shaft part 93 projecting downward from a central part of a lower surface of the terminal main body part 92. The terminal main body part 92 and the shaft part 93 of the positive electrode terminal 87 are integrally formed from aluminum (a single material). In the negative electrode terminal 89, the terminal main body part 92 is formed from aluminum, the shaft part 93 is formed from copper, and the two parts are assembled to each other. The terminal main body parts 92 of the positive electrode terminal 87 and the negative electrode terminal 89 are arranged on both end parts of the cover 85 via gaskets 94 made of an insulating material and are exposed from the gaskets 94 as shown in FIG. Fig. 4 shown free to the outside.

[0034] The cover 85 includes a pressure relief valve (safety valve) 95. The pressure relief valve 95 is arranged between the positive electrode terminal 87 and the negative electrode terminal 89. When the internal pressure of the housing 82 exceeds an upper limit, the pressure relief valve 95 opens to reduce the internal pressure of the housing 82. 2. Electrical configuration (power source system) of the vehicle 10

[0035] As in Fig. 5, the vehicle 10 includes a general electrical load 25, an alternator 30, a vehicle ECU 41, a vehicle navigation device 42, and an energy storage device 50.

[0036] The general load 25 may be an engine starter or auxiliary machinery. The engine starter includes an electric motor for starting the internal combustion engine. The auxiliary machinery may include a headlight, power steering, air conditioning, power windows, and the like.

[0037] An electronic control unit (ECU) for the vehicle (vehicle ECU) 41 is connected to the alternator 30 via a communication line 45 and can communicate with the energy storage device 50 via a communication line 46. Reference numeral 72 in Fig. 5 indicates a connector for connection to the communication line 46.

[0038] The vehicle ECU 41 controls the charging and discharging of the energy storage device 50 mounted in the vehicle 10. In addition to the charging / discharging control, the vehicle ECU 41 notifies the energy storage device 50 of various types of information such as information on a state of the traveling vehicle 10 by communication via the communication line 46.

[0039] The energy storage device 50 includes a current interruption device 53, a battery pack 60, a current detector 54, a voltage detector 110, a management device 120, and a temperature sensor 63.

[0040] The power interruption device 53, the voltage detector 110 and the management device 120 are mounted on the monitoring board 100.

[0041] For example, the battery pack 60 comprises twelve cells 62 (see Fig. 2), where four of the 62 cells are connected in parallel and three in series. In Fig. 5, three parallel-connected cells 62 are represented by a single battery symbol. The cell is an energy storage cell that can be repeatedly charged and discharged. The cell is not limited to a rectangular parallelepiped-shaped cell and may also be a cylindrical cell or a pouch cell with a laminated film casing.

[0042] The positive electrode of the battery pack 60 is connected to the positive electrode external terminal 51 via a power line 55P. The negative electrode of the battery pack 60 is connected to the negative electrode external terminal 52 via a power line 55N.

[0043] The external terminals 51 and 52 are terminals for connection to the general load 25, the alternator 30, the vehicle ECU 41, and the vehicle navigation device 42 mounted in the vehicle 10.

[0044] The current interruption device 53 is arranged at a positive electrode of the battery pack 60 and provided in the positive electrode power line 55P. The current interruption device 53 may use a switch with a mechanical contact, such as a relay. In addition to the mechanical contact, a semiconductor switch such as a FET may also be used.

[0045] The current interruption device 53 is controlled to a closed state during normal operation. When an abnormality occurs in the energy storage device 50, the management device 120 outputs a control signal to the current interruption device 53 and opens the current interruption device 53. By opening the current interruption device 53, the current I can be interrupted and the energy storage device 50 can be protected. Examples of the abnormality in the energy storage device 50 include overvoltage, overcurrent, overcharge, and overdischarge. The abnormality may be not only a cell abnormality but also a failure in which the energy storage device 50 does not operate normally, such as a switch failure, and is either a single failure or a compound failure.

[0046] The current detector 54 detects a current I [A] of the battery pack 60. The current detector 54 may be a shunt resistor. The resistive current detector 54 may measure the current I of the battery pack 60 based on a voltage between both ends of the current detector 54. The current detector 54 may distinguish between discharging and charging based on the voltage polarity (positive or negative). Alternatively, the current detector 54 may also be a magnetic sensor.

[0047] The voltage detector 110 is connected to both ends of each cell 62 via a signal line and measures a cell voltage Vs of each cell 62. Furthermore, the total voltage Vt of the battery pack 60 is measured based on the cell voltage Vs of each cell 62. The total voltage Vt of the battery pack 60 is the total voltage of the four cells 62 connected in series. The temperature sensor 63 is attached to the battery pack 60 and detects the temperature of the battery pack 60.

[0048] The management device 120 includes a CPU 121 with an arithmetic function and a memory 122, which is a storage unit. The management device 120 monitors the temperature T, the current I, and the total voltage Vt of the battery pack 60 based on the outputs of the current detector 54, the voltage detector 110, and the temperature sensor 63.

[0049] The memory 122 is a non-volatile storage medium such as a flash memory or an EEPROM. The memory 122 stores a monitoring program for monitoring a state of the battery pack 60 and data required for executing the monitoring program. Furthermore, the memory 122 stores a control program (the execution program of the flowchart of Fig. 7) the power interruption device 53 and data required for executing the control program.

[0050] The program can be stored using a telecommunications line.

[0051] The vehicle navigation device 42 includes a CPU 42A, a data storage section 42B, a first receiving section 42C, a second receiving section 42D, and a display panel 42E. The data storage section 42B stores map information. The first receiving section 42C receives GPS information (position information of the vehicle 10) from a GPS satellite. The second receiving section 42D receives road information from an information service center.

[0052] A user of the vehicle can input a destination G of the vehicle 10 through a panel operation on the display panel 42E. The vehicle navigation device 42 searches for a route to the destination G using the map information in the data storage part 42B and displays a search result on the display panel 42E.

[0053] The vehicle navigation device 42 obtains the position information, the traveling speed, and traffic information of the vehicle 10 based on information received by the first receiving part 42C and the second receiving part 42D during traveling. The vehicle navigation device 42 calculates a distance X from the current position to the destination G and a required time period Tx to the destination G in real time based on a measurement value of a gyro sensor provided in the vehicle 10 (a measurement value of the position information of the vehicle 10) and a measurement value of a vehicle speed pulse sensor provided in the vehicle 10 (a measurement value of speed information of the vehicle 10) with respect to this information (see Fig. 6). The calculation result is displayed on the display panel 42E. 2. Optimal control of the power interruption device

[0054] The management device 120 monitors the state of the energy storage device 50 based on the current, voltage, cell voltage, and temperature of the energy storage device 50 while the vehicle is traveling. If an abnormality of the energy storage device 50 is detected while the vehicle is traveling, the management device 120 performs optimal control of the power interruption device 53. The optimal control provides for optimizing the control of the power interruption device 53 in accordance with a difference in the state of the traveling vehicle 10 and includes six steps from S10 to S60 as shown in Fig. 7 shown.

[0055] When an abnormality of the energy storage device 50 is detected while the vehicle 10 is traveling, the management device 120 first notifies the vehicle ECU 41 to request that the vehicle 10 stop traveling due to the occurrence of the abnormality (S10). Further, the management device 120 receives the following information (1) from the vehicle navigation device 42 via the vehicle ECU 41 and receives the following information (2) from the vehicle ECU 41 along with the stop request notification. (1) Information about the driving environment of the vehicle 10 (2) Information on the driving speed of the vehicle 10

[0056] Thereafter, the management device 120 determines whether the driving environment of the vehicle 10 is a highway based on the driving environment information obtained from the vehicle navigation device 42 (S20).

[0057] When the vehicle 10 is traveling on a highway (S20: YES), the management device 120 sends a signal to the power interruption device 53, and the power interruption device 53 is maintained in the closed state for a first time T1 and opened after the first time T1 elapses (S40). The first time T1 is previously assumed to be a limited time period during which an unsafe event occurs in the energy storage device 50 when the energy storage device 50 continues to be used after the occurrence of an abnormality, and is, for example, two minutes.

[0058] In this case, the energy storage device 50 maintains a power supply to the vehicle 10 for the first time T1 after the occurrence of the abnormality. Therefore, a driver can use this time to move the vehicle 10 to an emergency stop area such as an emergency parking zone while traveling on the highway.

[0059] When the vehicle 10 is traveling on an ordinary road (S20: NO), the management device 120 determines whether the traveling speed of the vehicle 10 is equal to or higher than a predetermined value (for example, 60 km / h) (S30).

[0060] When the traveling speed of the vehicle 10 is equal to or higher than the predetermined value (S30: YES), the management device 120 maintains the power interruption device 53 in the closed state for the second time T2 and opens the power interruption device 53 after the second time T2 has elapsed (S50). The second time T2 is a time period during which the energy storage device 50 can be reused even though the energy storage device 50 is deteriorated or damaged due to continuous use after the occurrence of an abnormality. The second time T2 is shorter than the first time T1 (T1>T2) and is, for example, 1 minute.

[0061] In this case, the energy storage device 50 maintains the power supply to the vehicle 10 for the second time T2 after the abnormality occurs. Therefore, the driver can use this time to move the vehicle traveling at a traveling speed equal to or higher than the predetermined value to a safe position beside a regular road.

[0062] If the traveling speed of the vehicle 10 is lower than the predetermined value (S30, YES), the management device 120 maintains the power interruption device 53 in the closed state for the third time T3 and opens the power interruption device 53 after the third time T3 has elapsed (S50). The third time T3 is a time period during which the energy storage device 50 does not deteriorate or become damaged even if the energy storage device 50 continues to be used after an abnormality occurs. The third time T3 is shorter than the second time T2 (T2>T3), for example, 20 seconds.

[0063] In this case, the energy storage device 50 maintains the power supply to the vehicle 10 for the third time T3 after the abnormality occurs. Therefore, the driver can use this time to move the vehicle 10, traveling at a traveling speed lower than the predetermined value, to a safe position near an ordinary road.

[0064] In this embodiment, a difference in the closed-state maintenance time of the power interrupting device 53 is set in correspondence to a difference in the traveling environment or the traveling speed of the vehicle 10, the reason for this being as follows.

[0065] The reason why a difference in the closed-state maintenance time of the power interruption device 53 is set in accordance with the driving environment of the vehicle 10 is that the time from receiving a notification of an abnormality by the driver to stopping the vehicle 10 varies depending on the driving environment. Namely, when time is required for stopping the vehicle at a safe position because, for example, the vehicle is traveling on a highway, the vehicle traveling on the highway can be moved to the safe position and stopped by extending the closed-state maintenance time.On the other hand, when the energy storage device 50 can stop within a short time during driving, such as during driving on an ordinary road, deterioration or damage of the energy storage device 50 can be suppressed by shortening the closed-state maintenance time.

[0066] The reason why a difference in the closed-state maintenance time of the power interruption device 53 is set in correspondence to a difference in the traveling speed of the vehicle 10 is the same because the time required from the driver receiving a notification of abnormality until the traveling vehicle 10 stops varies depending on the traveling speed of the vehicle 10.

[0067] Therefore, when the traveling speed of the vehicle 10 is high and time is required to stop the traveling vehicle 10, the closed-state maintenance time is extended so that the vehicle 10 can be stopped safely at the high traveling speed. On the other hand, when the traveling speed is low and the traveling vehicle can be stopped within a short time, the closed-state maintenance time is shortened so that deterioration or damage of the energy storage device 50 can be suppressed as much as possible. 3. Explanation of the effects

[0068] With this configuration, when an abnormality occurs, the control of the power interruption device 53 is changed depending on the driving environment or the driving speed of the vehicle 10. Therefore, the power interruption device 53 can be controlled while considering a balance between the protection of the power storage device 50 and the priority of power supply to the vehicle 10. Accordingly, the vehicle 10 can be caused to perform an evacuation run to a safe position, and deterioration or damage to the power storage device 50 can be minimized. <Zweite Ausführungsform>

[0069] A second embodiment differs from the first embodiment by an optimal control of the power interruption device 53. The optimal control according to the second embodiment is carried out when the management device 120 detects an abnormality in the energy storage device 50 during the driving of the vehicle 10 and comprises five steps S100 to S140 as in Fig. 8 shown.

[0070] When an abnormality is detected in the energy storage device 50 during the running of the vehicle 10, the management device 120 first notifies a vehicle ECU 41 to request that the running of the vehicle 10 be stopped due to the occurrence of the abnormality.

[0071] Thereafter, the management device 120 determines whether the energy storage device 50 in which an abnormality has occurred can be reused (S110). Whether the energy storage device 50 can be reused can be determined based on the voltage of the energy storage device 50.

[0072] For example, by comparing the total voltage Vt of the energy storage device 50 with a reusable area F1 (see Fig. 9) determine whether the energy storage device 50 can be reused. In the example of Fig.9, the reusable range F1 is wider than a normal use range F2. If the energy storage device 50 is outside the normal use range, it is determined to be abnormal. And if the energy storage device 50 is farther from the reusable range, it is determined to be non-reusable. Whether the energy storage device 50 can be reused can be determined not only from the voltage but also from the temperature or a current value of the energy storage device 50.

[0073] When the management device 120 determines that the energy storage device 50 can be reused (S110: YES), the management device 120 does not open the power interruption device 53 but keeps the power interruption device 53 in the closed state.

[0074] In this case, because the power supply from the energy storage device 50 to the vehicle 10 is maintained even after the abnormality occurs, a driver can stop or park the vehicle 10 after moving the vehicle 10 to a safe position.

[0075] When the management device 120 determines that the energy storage device 50 cannot be reused (S110: NO), the management device 120 determines whether the distance X from the current position to the service base is equal to or greater than a predetermined value (for example, 100 km) (S120).

[0076] The service base is a base where a service such as refueling or maintenance is performed on the vehicle 10, and is, for example, a gas station or a dealer of the vehicle 10. The distance X to the service base is obtained by the management device 120 by causing the vehicle navigation device 42 to calculate the distance from the current position to the nearest service base by means of the vehicle ECU 41 and obtaining a calculation result from the vehicle navigation device 42.

[0077] When the distance X to the service base is equal to or greater than the predetermined value (S120: YES), the management device 120 prioritizes the safety of the vehicle 10 and keeps the power interruption device 53 in the closed state (S130).

[0078] In this case, because the power supply from the energy storage device 50 to the vehicle 10 is maintained even after the occurrence of the abnormality, the driver can move the vehicle 10 to the service base.

[0079] When the distance X to the service base is smaller than the predetermined value (S120: NO), the management device 120 prioritizes the reuse of the energy storage device 50 and switches the power interruption device 53 from the closed state to an open state (S140).

[0080] In this case, after the abnormality occurs, the power supply from the energy storage device 50 to the vehicle 10 is interrupted, making it difficult for the vehicle 10 to continue driving. After an emergency stop of the vehicle 10, the driver contacts a business operator providing road service and requests assistance.

[0081] In the first embodiment, when the management device 120 detects an abnormality in the energy storage device 50 during the running of the vehicle 10, the management device 120 changes the closed-state maintenance time of the power interruption device 53 depending on the running environment and the running speed of the vehicle 10.

[0082] In contrast, in the second embodiment, the management device 120 switches between controlling the opening of the power interruption device 53 and controlling the closing of the power interruption device 53 depending on the distance X from the current position to the nearest service base. In the second embodiment, the management device 120 can control (optimize) protection of the energy storage device and power supply to the vehicle 10, similar to the first embodiment, while maintaining a balance between the two. <Andere Ausführungsformen>

[0083] The present invention is not limited to the embodiments explained in the above description and in the drawings, the scope of the invention also includes the following embodiments. (1) The cell (repeatedly chargeable and dischargeable energy storage cell) 62 is not limited to a lithium-ion secondary battery cell and may also be another secondary battery cell using a non-aqueous electrolyte. A capacitor may also be used instead of the secondary battery cell 62. (2) In the first embodiment, the management device 120 changes the control of the power interruption device 53 between a case where the vehicle 10 is traveling on a highway and a case where the vehicle 10 is traveling on an ordinary road. Furthermore, the management device 120 may change the control of the power interruption device 53 between a case where the vehicle 10 is traveling at a position where stopping is difficult, such as an intersection or a railroad crossing, and a case where the vehicle is traveling at another position.

[0084] In short, the management device 120 may set the closed-state maintenance time of the power interruption device 53 long at a position where stopping is difficult, such as an intersection or a railroad crossing, and may set the closed-state maintenance time of the power interruption device 53 short when traveling in other environments.

[0085] (3) In the second embodiment described above, when the management device 120 detects an abnormality in the energy storage device 50 during traveling, the management device 120 changes the control of the power interruption device 53 depending on the distance X from the current position of the vehicle 10 to the nearest service base. Furthermore, the management device 120 may change the control of the power interruption device 53 depending on whether the vehicle 10 receives disaster information. Specifically, when the vehicle 10 receives disaster information during traveling, even if the management device 120 detects an abnormality in the energy storage device 50, the management device 120 prioritizes moving to a safe position and does not switch the power interruption device 53 to an open state (maintains the closed state).On the other hand, if the vehicle 10 has not received any disaster information, the management device 120 prioritizes the reuse of the energy storage device 50 and switches the power interruption device 53 from a closed state to an open state.

[0086] The disaster information is hurricane information, earthquake information, tsunami information, flood information or similar.

[0087] The vehicle 10 can obtain disaster information from an information providing center or the like via the navigation device 42. Note that, in the embodiments, processing performed by the management device 120 has been described, but this processing may also be performed by the vehicle ECU 41. Furthermore, a server provided outside the vehicle can remotely perform the processing by exchanging necessary information with the vehicle.

[0088] Furthermore, for the embodiments, a case where the present technique is applied to an automobile was described, but the present technique is not limited thereto and can also be applied to a motorcycle or a railway vehicle for safe driving and operation. The present technique can also be applied to the navigation of a ship and the operation of an aircraft. In other words, the present technique can be implemented in the following forms. (A) An energy storage device for a mobile object, the energy storage device comprising: a cell; a power interrupting device that interrupts the power of the cell; and a managing device, wherein, when an abnormality is detected in the energy storage device while a mobile object is moving, the managing device changes the control of the power interrupting device depending on a state of the moving mobile object. (B) The state of the mobile object may be a moving path of the mobile object or a moving speed of the mobile object. (C) The state of the mobile object may be a difference between the presence and absence of receiving disaster information. (D) The management device may change a closed-state maintenance time of the power interruption device depending on the state of the mobile object. List of reference symbols 10 vehicles 41 Vehicle ECU 50 Energy storage device 53 Power interruption device 60 battery pack 120 administrative facility QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JP 2017-5985

[0003] JP 2021-72680

[0003]

Claims

[1] An energy storage device for a vehicle, the energy storage device comprising: a cell, a current interruption device that interrupts the current of the cell, and an administrative body, where: when an abnormality of the energy storage device is detected during the running of the vehicle, the management device changes the control of the power interruption device depending on a state of the running vehicle. [2] Energy storage device according to claim 1, wherein: the state of the vehicle is a driving environment of the vehicle or a driving speed of the vehicle. [3] Energy storage device according to claim 1, wherein: the condition of the vehicle is a difference between the presence and absence of reception of disaster information. [4] Energy storage device according to claim 1, wherein: the management device changes a closed-state maintenance time of the power interruption device depending on the state of the vehicle. [5] A control method for a power interruption device used in an energy storage device for a vehicle, the control method comprising: Changing, when an abnormality is detected in the energy storage device during the running of the vehicle, the control of the power interruption device depending on a state of the running vehicle. [6] A control method for a power interruption device used in an energy storage device for a mobile object, the control method comprising: Changing, when an abnormality is detected in the energy storage device during a movement of the mobile object, the control of the power interruption device depending on a state of the moving mobile object.

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