WO2022250008A1 - 車載用制御装置 - Google Patents
車載用制御装置 Download PDFInfo
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- WO2022250008A1 WO2022250008A1 PCT/JP2022/021085 JP2022021085W WO2022250008A1 WO 2022250008 A1 WO2022250008 A1 WO 2022250008A1 JP 2022021085 W JP2022021085 W JP 2022021085W WO 2022250008 A1 WO2022250008 A1 WO 2022250008A1
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- current value
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- 230000007423 decrease Effects 0.000 claims abstract description 51
- 230000003247 decreasing effect Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 25
- 239000004065 semiconductor Substances 0.000 claims description 8
- 238000012886 linear function Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Definitions
- the present disclosure relates to an in-vehicle control device.
- Patent Document 1 discloses a load circuit that supplies power to a load.
- This load circuit includes a battery and a relay (semiconductor switch) provided between the battery and the load, and the load is switched between driving and stopping by turning the relay on and off.
- the load circuit further includes a fuse that breaks the power path when an overcurrent flows through the load.
- the fuse is selected based on the maximum value of the current that you want to pass through the path, it may not be able to cut off properly when the current value is low, causing the relay to emit smoke. Therefore, it is conceivable that the power path can be appropriately cut off by the relay when the current value is low by adopting a configuration in which the relay cuts off based on a predetermined cutoff characteristic.
- this configuration is adopted, both the fuse and the relay must be made large in order to allow a larger current to flow.
- the present disclosure provides a technology that allows a larger current to flow while suppressing the size of the relay.
- the in-vehicle control device of the present disclosure includes: An in-vehicle controller for use in an in-vehicle system, comprising: a power supply unit; a power path to which power is supplied from the power supply unit; a relay provided in the power path; and a control unit that switches the breaking unit to a breaking state based on a first breaking characteristic, the relay is turned off based on a second breaking characteristic, and the first breaking characteristic and the second breaking characteristic are , is a characteristic that defines a correspondence relationship between a current value and a time until interruption, and the second interruption characteristic is that as the current value increases, the time decreases at a first decreasing degree, and the first interruption The characteristic is that as the current value increases in a first current value range, the time decreases at a second degree of decrease, and in a second current value range larger than the upper limit of the first current value range, the current value increases.
- the time decreases at a third degree of decrease as the time increases, the second degree of decrease and the third degree of decrease are greater than the first degree of decrease, and the third degree of decrease is equal to the third degree of decrease.
- the first cutoff characteristic for the current value smaller than a threshold set between the lower limit value of the first current value range and the upper limit value of the second current value range.
- the time is set longer than the second cutoff characteristic, and the time is set shorter for the first cutoff characteristic than the second cutoff characteristic for the current value larger than the threshold ing.
- FIG. 1 is a circuit diagram schematically showing the configuration of the vehicle-mounted system of the first embodiment.
- FIG. 2 is an explanatory diagram conceptually showing the first cutoff characteristic and the second cutoff characteristic.
- In-vehicle control used in an in-vehicle system including a power supply unit, a power path to which power is supplied from the power supply unit, a relay provided on the power path, and a cutoff unit provided on the power path
- the device includes a control unit that switches the breaking unit to a broken state based on a first breaking characteristic, the relay is turned off based on a second breaking characteristic, and the first breaking characteristic and the second breaking characteristic are turned off.
- the breaking characteristic is a characteristic that defines the correspondence between the current value and the time until breaking, and the second breaking characteristic is that as the current value increases, the time decreases at a first decreasing degree
- the first cutoff characteristic as the current value increases in the first current value range, the time decreases with a second degree of decrease, and in the second current value range larger than the upper limit of the first current value range, the The time decreases at a third degree of decrease as the current value increases, the second degree of decrease and the third degree of decrease are greater than the first degree of decrease, and the third degree of decrease is , for the current value smaller than the second degree of decrease and smaller than a threshold value set between the lower limit value of the first current value range and the upper limit value of the second current value range, the The time is set longer for the first cutoff characteristic than the second cutoff characteristic, and the time for the first cutoff characteristic is shorter than the second cutoff characteristic for the current value greater than the threshold value.
- In-vehicle control device is set.
- the interruption by the relay when the value of the current flowing through the power path is smaller than the threshold, the interruption by the relay is prioritized, and when the value of the current flowing through the power path is greater than the threshold, the interruption by the breaking unit is prioritized. be.
- the degree of decrease in the time of the first cutoff characteristic is smaller in the second current value range than in the first current value range. Therefore, the maximum value of the current flowing through the power path can be increased without changing the second cutoff characteristic that cuts off the relay. Therefore, it is possible to allow a larger current to flow while suppressing an increase in the size of the relay.
- the time of the first cutoff characteristic is reduced by the second degree of decrease in the range of current values that give priority to cutoff by the relay, and the first cutoff is performed in the range of current values that give priority to cutoff by the cutoff unit.
- the characteristic time can be reduced by a third degree of reduction. Therefore, in the current value range in which priority is given to the interruption by the relay, it is possible to prevent the interruption by the interruption unit from being erroneously performed first. Further, in the current value range in which the interruption by the interruption unit is prioritized, the maximum value of the current value of the first interruption characteristic can be further extended.
- the control unit immediately switches the breaking unit to the breaking state when the value of the current flowing through the power path exceeds a second threshold that is larger than the threshold.
- the power path can be cut off immediately when an unacceptably large current flows even for a short period of time.
- the power path is cut off by physically cutting the power path, so the power path can be cut off more reliably.
- the amount of data for the first cutoff characteristics and the second cutoff characteristics can be reduced compared to the configuration defined by the table method.
- An in-vehicle system 100 shown in FIG. 1 is a system installed in a vehicle.
- the in-vehicle system 100 includes a power supply unit 90 , a load 91 , an electric power line 80 that supplies power to the load 91 based on the power supply unit 90 , and an in-vehicle control device 1 .
- the power supply unit 90 is, for example, a battery, more specifically a lead battery, a lithium ion battery, or the like.
- the load 91 is an electronic device provided in the vehicle.
- the power supply section 90 and the load 91 are electrically connected to the power line 80 respectively. Power from the power supply unit 90 is supplied to the power path 80 and supplied to the load 91 via the power path 80 .
- the in-vehicle control device 1 includes a relay 10 , a cutoff section 11 , a current detection section 12 , a second control section 13 and a control section 14 .
- the relay 10 is provided on the power line 80 .
- Relay 10 is, for example, a mechanical relay.
- the operation of the relay 10 is controlled by the second control section 13 .
- the relay 10 allows power supply from the power supply unit 90 side to the load 91 side by being in the ON state, and cuts off the power supply from the power supply unit 90 side to the load 91 side by being in the OFF state.
- the breaker 11 is provided in the power line 80 .
- the cutoff unit 11 is provided in series with the relay 10 and arranged closer to the power supply unit 90 than the relay 10 .
- the cutoff unit 11 can switch from a permitting state in which power supply from the power supply unit 90 side to the load 91 side is permitted to a cutoff state in which power supply from the power supply unit 90 side to the load 91 side is cut off.
- the blocking unit 11 can return from the blocking state to the allowing state.
- the operation of the cutoff section 11 is controlled by the control section 14 .
- the cutoff unit 11 is a semiconductor switching element in this embodiment.
- the current detection unit 12 detects the value of the current flowing through the power path 80 . More specifically, current detection unit 12 detects the current flowing through the path between relay 10 and cutoff unit 11 in power path 80 .
- the current detection unit 12 has, for example, a shunt resistor provided in the power path 80 and a differential amplifier that amplifies and outputs the voltage across the shunt resistor. A value detected by the current detection unit 12 is input to each of the second control unit 13 and the control unit 14 .
- the second control unit 13 and the control unit 14 are each configured as an ECU and have a CPU, ROM, RAM, and the like.
- a second control unit 13 controls the operation of the relay 10 .
- the control unit 14 switches the blocking unit 11 to the blocking state based on the first blocking characteristic BC1.
- the cut-off unit 11 cuts off when an overcurrent flows through the power line 80, and is normally in a permissible state.
- the second control unit 13 turns on the relay 10 when a predetermined driving start condition is satisfied. Accordingly, power based on the power supply unit 90 is supplied to the load 91 .
- the drive start condition may be, for example, that the driver performs a predetermined drive start operation, or may be another condition.
- the second control unit 13 turns off the relay 10 when a predetermined driving stop condition is satisfied.
- the drive stop condition may be, for example, that a predetermined drive end operation is performed by the driver, or may be another condition.
- the second control unit 13 switches the relay 10 to the off state based on the second cutoff characteristic BC2 even if the driving stop condition is not satisfied. That is, the relay 10 is cut off based on the second cutoff characteristic BC2.
- the first cutoff characteristic BC1 and the second cutoff characteristic BC2 are characteristics that define the correspondence relationship between the current value and the time until cutoff. More specifically, the first cut-off characteristic BC1 and the second cut-off characteristic BC2 are characteristics that define the correspondence relationship between the current value and the cut-off time when the current value continues to be exceeded.
- the first cutoff characteristic BC1 and the second cutoff characteristic BC2 are defined in a range where the current value is greater than 0A. As shown in FIG. 2, the first cutoff characteristic BC1 and the second cutoff characteristic BC2 decrease in corresponding time as the current value increases. In the first cut-off characteristic BC1, as the current value increases, the corresponding time decreases at a first decreasing degree.
- the second cutoff characteristic BC2 in the first current value range R1, as the current value increases, the corresponding time decreases at the second degree of decrease, and the second current value larger than the upper limit value of the first current value range R1 In the range R2, as the current value increases, the corresponding time decreases at the third decreasing degree.
- the first cutoff characteristic BC1 is defined in at least part of the first current value range R1 and at least part of the second current value range R2.
- the second degree of decrease and the third degree of decrease are greater than the first degree of decrease.
- the third degree of decrease is smaller than the second degree of decrease.
- the first degree of decrease, the second degree of decrease, and the third degree of decrease are all constant.
- a threshold Ith is set between the lower limit of the first current value range R1 and the upper limit of the second current value range R2.
- the threshold value Ith is set between the upper limit value of the first current value range R1 and the lower limit value of the second current value range R2.
- the first current value range R1 and the second current value range R2 are continuous with the threshold value Ith interposed therebetween.
- the lower limit value of the first current value range R1 is a value greater than zero.
- the first cutoff characteristic BC1 is set for a current value smaller than the threshold value Ith for a longer time than the second cutoff characteristic BC2. That is, when the current value flowing through power path 80 is smaller than threshold value Ith, relay 10 is cut off before cutoff unit 11 . Further, the second cutoff characteristic BC2 is set such that the relay 10 does not smoke when the current value is smaller than the threshold value Ith. Therefore, in a state in which the value of current flowing through power path 80 is smaller than threshold value Ith, relay 10 is cut off before relay 10 emits smoke.
- a shorter time than the second cutoff characteristic BC2 is set for a current value greater than the threshold value Ith. That is, when the current value flowing through power path 80 is greater than threshold value Ith, cutoff unit 11 is cut off before relay 10 .
- the threshold value Ith is set to a value smaller than a current value at which it becomes difficult for the relay 10 to cut off, for example. In this case, even if the value of the current flowing through the power path 80 is greater than the threshold value Ith, the breaking unit 11 can break the power faster than the relay 10 and more reliably than the relay 10 .
- the first cutoff characteristic BC1 and the second cutoff characteristic BC2 are determined by a linear function with the current value and time as variables.
- the relationship between the current value and time in the first current value range R1 of the first cutoff characteristic BC1 is represented by the following formula (1).
- the relationship between the current value and time in the second current value range R2 of the first cutoff characteristic BC1 is expressed by the following equation (2).
- the relationship between the current value and time in the second cutoff characteristic BC2 is represented by the following formula (3).
- Y1 A1 ⁇ X1+B1 Expression (1)
- Y2 A2 ⁇ X2+B2 Expression (2)
- Y3 A3 ⁇ X3+B3 Expression (3)
- X1, X2, and X3 are current values and are values greater than zero.
- Y1, Y2, and Y3 are times and values greater than zero.
- A1, A2, and A3 are slopes and are values less than zero.
- B1, B2 and B3 are constants and values greater than zero.
- A1 and A2 are smaller values than A3.
- A2 is a larger value than A1.
- the threshold Ith is the intersection of equations (1), (2), and (3).
- the control unit 14 decomposes the current value determined by the first cutoff characteristic BC1 into a plurality of current values with a predetermined resolution. Then, the control unit 14 determines whether or not the value of the current flowing through the power path 80 exceeds each of the plurality of decomposed current values, and activates the timer corresponding to the exceeded current value when it exceeds. Then, when the operating time of the timer reaches the time corresponding to the current value without falling below the current value, the control unit 14 switches the breaking unit 11 to the breaking state.
- control unit 14 resets the timer when the value of the current flowing through the power path 80 falls below the current value before the operating time of the timer reaches the time corresponding to the current value.
- the control unit 14 activates the timer for each of the multiple exceeded current values, and performs similar processing.
- the process of blocking the relay 10 based on the second blocking characteristic BC2 is performed in the same manner as the process of blocking the blocking section 11 based on the first blocking characteristic BC1.
- the second threshold Ith2 is the same value as the upper limit of the second current value range R2.
- the second threshold value Ith2 is set, for example, within a range of current values in which the relay 10 does not explode.
- the time corresponding to the current value exceeding the second threshold value Ith2 is "0" or "substantially 0 (for example, 10 of the time corresponding to the upper limit value of the second current value range R2 in the first cutoff characteristic BC1. 1 minute or less)" is set. According to this configuration, explosion of the relay 10 can be suppressed.
- the in-vehicle control device 1 of the first embodiment when the value of the current flowing through the power path 80 is smaller than the threshold value Ith, priority is given to cutoff by the relay 10, and the value of the current flowing through the power path 80 falls below the threshold value Ith In a state larger than , the blocking by the blocking unit 11 is prioritized.
- the degree of decrease in the time of the first cutoff characteristic BC1 is smaller in the second current value range R2 than in the first current value range R1. Therefore, the maximum value of the current flowing through the power path 80 can be increased without changing the second cutoff characteristic BC2 that cuts off the relay 10 . Therefore, it is possible to allow a larger current to flow while suppressing an increase in the size of the relay 10 .
- the threshold Ith is a value between the upper limit of the first current value range R1 and the lower limit of the second current value range R2.
- the time of the first cutoff characteristic BC1 is reduced by the second degree of decrease in the current value range that prioritizes cutoff by the relay 10, and the current value range that prioritizes cutoff by the cutoff unit 11:
- the time of the first blocking characteristic BC1 can be reduced by a third degree of reduction. Therefore, in the current value range in which priority is given to the interruption by the relay 10, it is possible to prevent the interruption by the interruption unit 11 from being erroneously performed first.
- the maximum value of the current value of the first interruption characteristic BC1 can be further extended.
- the control section 14 immediately switches the cutoff section 11 to the cutoff state. According to this configuration, the power path 80 can be cut off immediately when an unacceptable large current flows even for a short time.
- the relay 10 is a mechanical relay
- the breaker 11 is a semiconductor switching element. According to this configuration, it is possible to suppress the cost increase of the relay 10, and more accurately realize the configuration in which the degree of decrease in the time of the first breaking characteristic BC1 changes according to the range of the current value by the breaking unit 11. can do.
- the first current value range R1 it is assumed to be restored after the interruption. , so that the interruption by the relay 10 has higher priority than the interruption by the interruption unit 11 . Therefore, the demand for returning the breaking unit 11 to the allowable state is relaxed, and as a result, the cost increase of the breaking unit 11 can be suppressed.
- first cutoff characteristic BC1 and the second cutoff characteristic BC2 are determined by a linear function with the current value and time as variables. According to this configuration, the amount of data of the first cutoff characteristic BC1 and the second cutoff characteristic BC2 can be reduced compared to the configuration defined by the table method.
- the in-vehicle control device is configured to include the relay, the cutoff section, the current detection section, and the second control section, but may be configured not to include some or all of these.
- control unit may control the relay. In this case, there is no need to provide the second control section in the in-vehicle system.
- the relay was a mechanical relay, but it may be a semiconductor relay.
- the breaker was a semiconductor switching element, but it may not be a semiconductor switching element as long as it can be switched to an off state by control.
- the blocking section may be a mechanical switch.
- the blocking unit was configured to be able to return to the allowable state after switching to the blocking state, but may be configured not to be able to return.
- a configuration that cannot return to the allowable state may be, for example, a circuit breaker that physically cuts off the path when a control signal is given. More specifically, a pyrotechnic circuit breaker (e.g., PYROFUSE (registered trademark)) that causes an explosion when a drive current is input, and physically cuts the path by moving the displacement part due to the explosion. )).
- the blocking unit may be a switch, but may be configured so as not to be controlled to return to the allowable state.
- the breaking unit is immediately switched to the breaking state
- the current value exceeding the second threshold in the first breaking characteristic corresponds to
- the configuration is such that the time is 0 or approximately 0, another configuration may be used.
- the control unit stores a second threshold separately from the first cutoff characteristic, and when the value of the current flowing through the power path exceeds the second threshold, the time determined by the first cutoff characteristic elapses. Even if not, the blocking unit may be switched to the blocking state.
- the first cutoff characteristic and the second cutoff characteristic are defined by a linear function with the current value and time as variables, but are defined by a table showing the correspondence between the current value and time. It may be a configuration.
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Abstract
Description
電源部と、前記電源部に基づく電力が供給される電力路と、前記電力路に設けられるリレーと、前記電力路に設けられる遮断部と、を備える車載システムに用いられる車載用制御装置であって、前記遮断部を第1遮断特性に基づいて遮断状態に切り替える制御部を備え、前記リレーは、第2遮断特性に基づいてオフ状態とされ、前記第1遮断特性及び前記第2遮断特性は、電流値と遮断するまでの時間との対応関係を定めた特性であり、前記第2遮断特性は、前記電流値が大きくなるにつれて第1の減少度合いで前記時間が減少し、前記第1遮断特性は、第1電流値範囲において前記電流値が大きくなるにつれて第2の減少度合いで前記時間が減少し、前記第1電流値範囲の上限値よりも大きい第2電流値範囲において前記電流値が大きくなるにつれて第3の減少度合いで前記時間が減少し、前記第2の減少度合い及び前記第3の減少度合いは、前記第1の減少度合いよりも大きく、前記第3の減少度合いは、前記第2の減少度合いよりも小さく、前記第1電流値範囲の下限値と前記第2電流値範囲の上限値との間に設定される閾値よりも小さい前記電流値に対して、前記第1遮断特性の方が前記第2遮断特性よりも長い前記時間が設定され、前記閾値よりも大きい前記電流値に対して、前記第1遮断特性の方が前記第2遮断特性よりも短い前記時間が設定されている。
以下では、本開示の実施形態が列記されて例示される。
図1で示す車載システム100は、車両に搭載されるシステムである。車載システム100は、電源部90と、負荷91と、電源部90に基づく電力を負荷91に供給する電力路80と、車載用制御装置1と、を備える。
Y1=A1・X1+B1・・・式(1)
Y2=A2・X2+B2・・・式(2)
Y3=A3・X3+B3・・・式(3)
X1、X2、X3は電流値であり、0よりも大きい値である。Y1、Y2、Y3は時間であり、0よりも大きい値である。A1、A2、A3は傾きであり、0よりも小さい値である。B1、B2、B3は定数であり、0よりも大きい値である。
A1及びA2は、A3よりも小さい値である。A2は、A1よりも大きい値である。閾値Ithは、式(1)、式(2)、及び式(3)の交点である。
第1実施形態の車載用制御装置1によれば、電力路80を流れる電流の値が閾値Ithよりも小さい状態では、リレー10による遮断が優先され、電力路80を流れる電流の値が閾値Ithよりも大きい状態では、遮断部11による遮断が優先される。しかも、電力路80を流れる電流の値が閾値Ithよりも大きい状態では、第2電流値範囲R2において第1遮断特性BC1の時間の減少度合いが第1電流値範囲R1よりも小さくなっている。このため、リレー10を遮断させる第2遮断特性BC2を変えることなく、電力路80に流れる電流の最大値を大きくすることができる。したがって、リレー10の大型化を抑制しつつ、より大きな電流が流れることを許容しうる。
本開示は、上記記述及び図面によって説明した実施形態に限定されるものではない。例えば、上述又は後述の実施形態の特徴は、矛盾しない範囲であらゆる組み合わせが可能である。また、上述又は後述の実施形態のいずれの特徴も、必須のものとして明示されていなければ省略することもできる。更に、上述した実施形態は、次のように変更されてもよい。
10…リレー
11…遮断部
12…電流検出部
13…第2制御部
14…制御部
80…電力路
90…電源部
91…負荷
100…車載システム
BC1…第1遮断特性
BC2…第2遮断特性
Ith…閾値
Ith2…第2閾値
R1…第1電流値範囲
R2…第2電流値範囲
Claims (7)
- 電源部と、前記電源部に基づく電力が供給される電力路と、前記電力路に設けられるリレーと、前記電力路に設けられる遮断部と、を備える車載システムに用いられる車載用制御装置であって、
前記遮断部を第1遮断特性に基づいて遮断状態に切り替える制御部を備え、
前記リレーは、第2遮断特性に基づいてオフ状態とされ、
前記第1遮断特性及び前記第2遮断特性は、電流値と遮断するまでの時間との対応関係を定めた特性であり、
前記第2遮断特性は、前記電流値が大きくなるにつれて第1の減少度合いで前記時間が減少し、
前記第1遮断特性は、第1電流値範囲において前記電流値が大きくなるにつれて第2の減少度合いで前記時間が減少し、前記第1電流値範囲の上限値よりも大きい第2電流値範囲において前記電流値が大きくなるにつれて第3の減少度合いで前記時間が減少し、
前記第2の減少度合い及び前記第3の減少度合いは、前記第1の減少度合いよりも大きく、
前記第3の減少度合いは、前記第2の減少度合いよりも小さく、
前記第1電流値範囲の下限値と前記第2電流値範囲の上限値との間に設定される閾値よりも小さい前記電流値に対して、前記第1遮断特性の方が前記第2遮断特性よりも長い前記時間が設定され、前記閾値よりも大きい前記電流値に対して、前記第1遮断特性の方が前記第2遮断特性よりも短い前記時間が設定されている
車載用制御装置。 - 前記閾値は、前記第1電流値範囲の上限値と前記第2電流値範囲の下限値との間の値である
請求項1に記載の車載用制御装置。 - 前記制御部は、前記電力路を流れる電流の値が、前記閾値よりも大きい第2閾値を超えた場合、前記遮断部を即座に前記遮断状態に切り替える
請求項1又は請求項2に記載の車載用制御装置。 - 前記リレーは、メカニカルリレーであり、
前記遮断部は、半導体スイッチング素子である
請求項3に記載の車載用制御装置。 - 前記遮断部は、パイロヒューズである
請求項3に記載の車載用制御装置。 - 前記第1遮断特性及び前記第2遮断特性は、前記電流値及び前記時間を変数とした一次関数によって定められる
請求項5に記載の車載用制御装置。 - 前記第1遮断特性及び前記第2遮断特性は、前記電流値及び前記時間を変数とした一次関数によって定められる
請求項1又は請求項2に記載の車載用制御装置。
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JP2009232588A (ja) * | 2008-03-24 | 2009-10-08 | Otowa Denki Kogyo Kk | Spd切り離し装置 |
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WO2021010007A1 (ja) * | 2019-07-17 | 2021-01-21 | パナソニックIpマネジメント株式会社 | 電力遮断装置 |
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JPH03285518A (ja) * | 1990-03-30 | 1991-12-16 | Nec Corp | 家電用電力制御装置 |
JPH06237521A (ja) * | 1993-02-08 | 1994-08-23 | Toyota Motor Corp | リレーの動作不良検出回路 |
JP5675045B2 (ja) * | 2008-11-26 | 2015-02-25 | 三洋電機株式会社 | バッテリシステム |
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JP6301206B2 (ja) * | 2014-06-05 | 2018-03-28 | マクセルホールディングス株式会社 | 蓄電装置及び制御プログラム |
WO2017115630A1 (ja) * | 2015-12-28 | 2017-07-06 | カルソニックカンセイ株式会社 | 過電流遮断システム |
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