CN203747396U - Power module protective device - Google Patents
Power module protective device Download PDFInfo
- Publication number
- CN203747396U CN203747396U CN201420086734.1U CN201420086734U CN203747396U CN 203747396 U CN203747396 U CN 203747396U CN 201420086734 U CN201420086734 U CN 201420086734U CN 203747396 U CN203747396 U CN 203747396U
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- temperature
- switch element
- power module
- power model
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Power Conversion In General (AREA)
- Protection Of Static Devices (AREA)
Abstract
The utility model relates to a power module protective device, which is used for protecting a built-in switching element (4) in a power module (2) arranged on a cooling fin. The power module protective device comprises an element temperature sensor (6), a fin temperature sensor (5) and a microcomputer (9) (action limiting circuit), wherein the element temperature sensor (6) is internally arranged in the power module (2) and used for detecting the temperature of the built-in switching element (4) in the power module (2); the fin temperature sensor (5) is used for detecting the temperature of the cooling fin; and the microcomputer (9) (action limiting circuit) can find out the temperature difference between the element temperature detected by the element temperature sensor (6) and the fin temperature detected by the fin temperature sensor (5), and can generate an action limiting instruction (11a) which limits the action of the switching element (4) and output the action limiting instruction (11a) to a driving circuit (12) of the switching element (4).
Description
Technical field
The utility model relates to power model (power module) protective device.
Background technology
In inverter (inverter) device that is equipped on air-conditioner outdoor unit etc., utilized power model, the loss of switch (switching) element such as IGBT that is built in power model during because of switch motion can be generated heat.Therefore; in DC-to-AC converter in the past; in order to prevent that the temperature (component temperature) of switch element from rising and avoiding switch element damaged and be configured to fin (fin) installation power module and leaf temperature transducer (sensor), the component temperature detecting when the leaf temperature transducer by near setting power model while reaching capacity temperature, carry out output current restriction, carrier wave (carrier) frequency minimizing or stop waiting protection to move (for example, with reference to patent documentation 1) completely.
[patent documentation 1] Japanese kokai publication hei 09-148523 communique (Fig. 1 etc.)
But, taking above-mentioned patent documentation 1 in the prior art of representative, carry out detecting element temperature owing to being configured to the leaf temperature transducer only utilizing fin assembling, so the heat being produced by switch element is passed to leaf temperature transducer via fin, cause by leaf temperature transducer, the detection generation time of component temperature being postponed.Therefore, abnormal etc. in superheat state at switch element because of the abnormal or switch element of the drive circuit of switch element etc., also cannot promptly carry out protection action.Especially at the component temperature from power model, the unfavorable condition when power model is assembled into fin cannot be delivered to the state of fin rightly; compared with the situation of normally being assembled with power model; exist switch element to become superheat state, likely damaged this problem of switch element before protection action starting.
Utility model content
The utility model In view of the foregoing proposes, and its object is, provides a kind of and can move to realize the power module protection device that quality improves with the overtemperature protection that power model is independently appropriately carried out switch element to the installment state of fin.
In order to solve above-mentioned problem, to realize object, the utility model relates to the power module protection device that switch element built-in in the power model to being installed in fin is protected, possess: component temperature transducer, it is built in described power model, and detects the temperature of the switch element that is built in described power model; Leaf temperature transducer, it detects the temperature of described fin; With motion limits circuit, it obtains the temperature difference between the component temperature being detected by described component temperature transducer and the leaf temperature being detected by described leaf temperature transducer, be defined threshold above in the situation that at component temperature higher than leaf temperature and described temperature difference, generate the motion limits instruction of the described switch element action of restriction and export to the drive circuit of described switch element.
In above-mentioned power module protection device, described fin described power model is installed and do not have built-in described component temperature transducer without sensor power module, described motion limits circuit possesses: abnormality juding portion, it obtains described temperature difference, be defined threshold above in the situation that at component temperature higher than leaf temperature and described temperature difference, be judged to be to produce installation that power model installs to described fin abnormal or produced the abnormal heating of described switch element; The first motion limits portion, it generates described motion limits instruction and exports to the drive circuit of described switch element in the time of the result of determination receiving from described abnormality juding portion; With the second motion limits portion, it,, in the time of the result of determination receiving from described abnormality juding portion, generates the drive circuit that restriction is built in the motion limits instruction of the described action of the switch element without sensor power module and exports to this switch element.
In addition, in above-mentioned power module protection device, described fin described power model is installed and do not have built-in described component temperature transducer without sensor power module, described motion limits circuit possesses: abnormality juding portion, it obtains described temperature difference, be defined threshold above in the situation that in leaf temperature higher than component temperature and described temperature difference, be judged to be to be built in the described switch element without sensor power module and produced abnormal heating; The first motion limits portion, it generates described motion limits instruction and exports to the drive circuit of described switch element in the time of the result of determination receiving from described abnormality juding portion; With the second motion limits portion, it,, in the time of the result of determination receiving from described abnormality juding portion, generates the drive circuit that restriction is built in the motion limits instruction of the described action of the switch element without sensor power module and exports to this switch element
In addition, in order to solve above-mentioned problem, to realize object, the utility model also relates to the power module protection device that switch element built-in in the power model to being installed in fin is protected, possess: component temperature transducer, it is built in described power model, and detects the temperature of the switch element that is built in described power model; Leaf temperature transducer, it detects the temperature of described fin; With motion limits circuit, it obtains the temperature difference between the component temperature being detected by described component temperature transducer and the leaf temperature being detected by described leaf temperature transducer, be defined threshold above in the situation that in this temperature difference, generate the motion limits instruction of the described switch element action of restriction and export to the drive circuit of described switch element.
According to this utility model, play and can carry out rightly the overtemperature protection action of switch element and realize quality and improve this effect.
Brief description of the drawings
Fig. 1 is the figure that schematically shows the fin, power model and the leaf temperature transducer that form the power module protection device that relates to of execution mode 1 of the present utility model.
Fig. 2 is the figure of the functional module (block) of the power module protection device that represents that execution mode 1 of the present utility model relates to.
Fig. 3 is the figure for the action of the power module protection device shown in Fig. 2 is described.
Fig. 4 is the figure that has represented to install the fin of the power model that has the power model of component temperature transducer and do not have component temperature transducer.
Fig. 5 is the figure that represents other configuration examples of power module protection device.
Fig. 6 is the figure that the action of the power module protection device for execution mode 2 of the present utility model is related to describes.
Description of reference numerals
1-fin; 2,2A-power model; 4,4A-switch element; 5-leaf temperature transducer; 6-component temperature transducer; 7-leaf temperature testing circuit; 8-component temperature testing circuit; 9,9A-microcomputer (motion limits circuit); 10-abnormality juding portion; 10a-result of determination; 11,11A-motion limits portion; The instruction of 11a-motion limits; 12,12A-drive circuit.
Embodiment
The execution mode of the power module protection device based on accompanying drawing, the utility model being related to below, is described in detail.Wherein, the utility model is not limited by this execution mode.
Execution mode 1.
Fig. 1 is the figure that schematically shows the fin 1, power model 2 and the leaf temperature transducer 5 that form the power module protection device that relates to of execution mode 1 of the present utility model.Fig. 2 is the figure of the functional module of the power module protection device that represents that execution mode 1 of the present utility model relates to.Fig. 3 is the figure for the action of the power module protection device shown in Fig. 2 is described.
Fin 1 shown in Fig. 1 is provided with the such as thermistor of leaf temperature transducer 5(of temperature (leaf temperature) that detects fin 1) (thermistor) and be built-in with the switch element 4 shown in Fig. 2 and such as thermistor of component temperature transducer 6() power model 2.
In illustrated example, power model 2 and leaf temperature transducer 5 are provided in the bottom surface of fin 1.In addition, the installation site of the shape of fin 1, power model 2 and leaf temperature transducer 5 is not limited to illustrated example, preferably leaf temperature transducer 5 is located near of power model 2 so that component temperature that can high accuracy detection power module 2.
In addition, in illustrated example, fin 1 has been installed to a power model 2, but the quantity of power model is not limited to illustrated example, in the fin 1 relating in present embodiment, at least uses a power model 2 that is built-in with component temperature transducer 6 and switch element 4.
In Fig. 2, represented the major function of power module protection device, power module protection device is configured to be had: leaf temperature transducer 5, leaf temperature testing circuit 7, microcomputer (microcomputer) (motion limits circuit) 9, component temperature testing circuit 8, drive circuit 12 and be built in the component temperature transducer 6 of power model 2.
The switch element 4 that is built in power model 2 is for example IGBT, and the driving signal based on from drive circuit 12 carries out ON/OFF(on/off) action.The component temperature of component temperature testing circuit 8 based on carry out the switch element 4 in detection power module 2 from the temperature information of component temperature transducer 6 that is built in power model 2.The leaf temperature of leaf temperature testing circuit 7 based on detect fin 1 from the temperature information of leaf temperature transducer 5.
Microcomputer 9 has abnormality juding portion 10 and motion limits portion 11.Abnormality juding portion 10 obtains the temperature difference between the leaf temperature being detected by leaf temperature testing circuit 7 and the component temperature being detected by component temperature testing circuit 8, be that defined threshold is above in the situation that at component temperature higher than leaf temperature and temperature difference, be judged to be to produce the installation of power model 2 bad etc., exported its result of determination 10a to motion limits portion 11.The bad grade of installation of power model 2 for example refer to from the power model 2 heat unfavorable condition (installation of power model 2 is bad) when power model 2 is assembled into fin 1 become the situation of the state of fin 1 that cannot be passed to rightly, because microcomputer 9 carries out the situation of the abnormal heating of the caused switch element 4 of abnormal operation because of noise (noise) etc.Wherein, the value of regulation is pre-set in abnormality juding portion 10, or is recorded in the memory (memory) (not shown) in microcomputer 9.
Motion limits portion 11, in the time of the result of determination 10a receiving from abnormality juding portion 10, generates and for example makes drive circuit 12 carry out the reduction of carrier frequency for limit switch element 4 moves or stop waiting the motion limits instruction 11a that moves completely and by its output.
Below, use Fig. 3 to describe action.The curve of the dotted line that has represented the curve of the solid line that the rheological parameters' change with time of the leaf temperature to being detected by leaf temperature transducer 5 represents in Fig. 3 and the rheological parameters' change with time of the component temperature being detected by component temperature transducer 6 is represented.The curve of illustrated example is used for representing that above-mentioned power model 2 has produced leaf temperature and component temperature passing in time when bad grade is installed.
Especially in the case of produced the installation of power model 2 bad, compared with the situation bad with not producing this, the thermal change producing due to power model 2 must be difficult to be absorbed heat by fin 1, so the component temperature being detected by component temperature transducer 6 represents the value higher than leaf temperature, there is process in time of temperature difference Δ T1 between component temperature and leaf temperature and become large trend.Move owing to being only configured in the prior art the protection of carrying out power model 2 according to the leaf temperature being detected by leaf temperature transducer 5; even if so in the case of the bad grade of installation that has produced power model 2; can not detect rightly the component temperature of the switch element 4 that is built in power model 2, likely cause switch element 4 breakages.
The power module protection device that present embodiment relates to as shown example is such; when being configured to temperature difference Δ T1 between leaf temperature and component temperature and exceeding defined threshold; be judged to be to produce the installation of power model 2 bad etc., the action of switch element 4 has been limited.And because the loss that is accompanied by switch motion after the confined moment of the action at switch element 4 (moment t1) reduces, so the such component temperature of example shows the trend reducing in time as shown, its result, can avoid switch element 4 breakages.
In addition; the power module protection device relating to due to present embodiment has the abnormality juding portion 10 that determines whether the bad grade of installation that has produced power model 2 based on temperature difference Δ T1, so can check after power model 2 is assembled into fin 1 that the installation of power model 2 is bad etc.Therefore, can prevent that defective item from flowing to market.Particularly, be installed on that the quantity of power model 2 of fin 1 is more many more can expect large effect.In addition, can reduce the operating cost (cost) accompanying with the replacing of damaged power model 2.
In addition; above the configuration example of avoiding power model 2 breakages that are built-in with component temperature transducer 6 is illustrated; but the power module protection device that present embodiment relates to also can be configured to the installation that has been judged to be to produce power model 2 by abnormality juding portion 10 is bad while waiting, also restriction simultaneously does not have the action of the switch element 4 in 1 of component temperature transducer 6 or multiple power model 2.Below, this configuration example is described.
Fig. 4 has represented to install the figure that has the power model 2 of component temperature transducer 6 and do not have the fin 1 of the power model 2A of component temperature transducer 6.Fig. 5 is the figure that represents other configuration examples of power module protection device.
Fin 1 shown in Fig. 4 has been mounted leaf temperature transducer 5, power model 2 and has not had the power model of component temperature transducer 6 (without sensor power module (sensor less power module)) 2A.In illustrated example, fin 1 has been installed to a power model 2 and a power model 2A, but the power model 2 that the power module protection device that present embodiment relates to is protected, the quantity of 2A are not limited to illustrated example.
In Fig. 5, the switch element 4A that is built in power model 2A is for example IGBT, and the driving signal based on from drive circuit 12A carries out ON/OFF(ON/OFF) action.In microcomputer 9A, except being provided with abnormality juding portion 10 and motion limits portion 11, be also provided with the 11A of motion limits portion.
The 11A of motion limits portion, in the time of the result of determination 10a receiving from abnormality juding portion 10, generates and makes drive circuit 12A carry out that carrier frequency reduces or stop waiting completely the motion limits instruction 11a that moves for the action of limit switch element 4A and by its output.
Based on this formation, when be judged to be to produce bad grade of installation of power model 2 in abnormality juding portion 10 time, to drive circuit 12 output action restriction instruction 11a, from the 11A of motion limits portion, drive circuit 12A output action is limited to instruction 11a from motion limits portion 11 in addition.Therefore; even in the case of the bad grade of installation that has produced power model 2; also can avoid power model 2 and power model 2A breakage, compared with the situation of the power model built-in element temperature sensor 6 to all, can protect action with cheap formation.
As described above, the power module protection device that present embodiment relates to is the power module protection device that switch element 4 built-in in the power model 2 to being installed in fin 1 is protected, possess: component temperature transducer 6, it is built in power model 2, and detects the temperature of the switch element 4 that is built in power model 2; Leaf temperature transducer 5, it detects the temperature of fin 1; With microcomputer 9(motion limits circuit), it obtains the temperature difference Δ T1 between the component temperature being detected by component temperature transducer 6 and the leaf temperature being detected by leaf temperature transducer 5, be defined threshold above in the situation that at component temperature higher than leaf temperature and temperature difference Δ T1, generate the motion limits instruction 11a that limit switch element 4 moves the drive circuit 12 of exporting to switch element 4.According to this formation, while can the temperature difference Δ T1 between leaf temperature and component temperature exceeding defined threshold, limit the action of switch element 4, thereby avoid switch element 4 breakages.
In addition, fin 1 power model 2 is installed and do not have built-in element temperature sensor 6 without sensor power module (power model 2A), microcomputer 9A possesses: abnormality juding portion 10, it obtains temperature difference Δ T1, be defined threshold above in the situation that at component temperature higher than leaf temperature and temperature difference Δ T1, be judged to be to produce power model 2 abnormal or produced the abnormal heating of switch element 4 to the installation of fin 1; The first motion limits portion (motion limits portion 11), in the time of the result of determination 10a receiving from abnormality juding portion 10, generates motion limits instruction 11a and also the drive circuit 12 of switch element 4 is exported; With the second motion limits portion (11A of motion limits portion), in the time of the result of determination 10a receiving from abnormality juding portion 10, generate restriction be built in power model 2A switch element 4A action motion limits instruction 11a and export the drive circuit 12A of this switch element 4A to.Based on this formation, even in the case of the bad grade of installation that has produced power model 2, also can avoid power model 2 and power model 2A breakage.
Execution mode 2.
Fig. 6 is the figure that the action of the power module protection device for execution mode 2 of the present utility model is related to describes.Be the acts of determination in abnormality juding portion 10 with the difference of execution mode 1, below to the part identical with execution mode 1 give identical Reference numeral come the description thereof will be omitted, only different parts is narrated here.
The curve of the dotted line that has represented the curve of the solid line that the rheological parameters' change with time of the leaf temperature to being detected by leaf temperature transducer 5 represents in Fig. 6 and the rheological parameters' change with time of the component temperature being detected by component temperature transducer 6 is represented, the curve of illustrated example for representation case as the leaf temperature during higher than component temperature and the passing in time of component temperature in the situation lower blade temperature of power model 2A abnormal heating.
The situation of power model 2A abnormal heating and power model 2A be not compared with the situation of abnormal heating, the leaf temperature being detected by leaf temperature transducer 5 shows the value higher than component temperature, has process in time of temperature difference Δ T2 between component temperature and leaf temperature and becomes large trend.
The abnormality juding portion 10 that present embodiment relates to as shown example like that, is configured in the time that temperature difference Δ T2 exceedes defined threshold, is judged to be the heating of power model 2A normal anomaly, and the action of switch element 4A is limited.And because the loss that is accompanied by switch motion after the confined moment of the action at switch element 4A (moment t2) reduces, so the such component temperature of example shows downward trend in time as shown, its result, can avoid switch element 4A breakage.
In addition; in execution mode 2, the configuration example of avoiding power model 2A breakage is illustrated; but the power module protection device that present embodiment relates to also can be configured in the time being judged to be power model 2A abnormal heating by abnormality juding portion 10, also limit the switch element 4 in the power model 2 of execution mode 1 simultaneously.Based on this formation, when be judged to be power model 2A abnormal heating in abnormality juding portion 10 time, to drive circuit 12 output action restriction instruction 11a, limit in addition instruction 11a from motion limits portion 11 from the 11A of motion limits portion to drive circuit 12A output action.Therefore, the power module protection device relating to according to present embodiment, except the effect of execution mode 1, can also play and in the situation that power model 2A becomes superheat state, also can avoid damaged this effect of power model 2.
As described above, the abnormality juding portion 10 that present embodiment relates to is configured to the temperature difference Δ T2 obtaining between the component temperature being detected by component temperature transducer 6 and the leaf temperature being detected by leaf temperature transducer 5, be that defined threshold is above in the situation that in leaf temperature higher than component temperature and temperature difference Δ T2, the switch element 4A that is judged to be to be built in power model 2A has produced abnormal heating, the described motion limits 11A of portion, in the time of the result of determination 10a receiving from abnormality juding portion 10, generates the motion limits instruction 11a of limit switch element 4A action.Based on this formation, even if the situation that abnormal heating occurs at the power model 2A without transducer (sensor less) also can be avoided power model 2A breakage.
In addition, execution mode of the present utility model only represents an example of content of the present utility model, can also combine with other known technology, can certainly be configured in a scope omission part that does not depart from the utility model purport and wait and change.
Utilizability in industry
In sum, the utility model can be applied to power module protection device, is especially useful as the utility model that can improve quality.
Claims (4)
1. a power module protection device, is the power module protection device that switch element built-in in the power model to being installed in fin is protected, and it is characterized in that possessing:
Component temperature transducer, it is built in described power model, and detects the temperature of the switch element that is built in described power model;
Leaf temperature transducer, it detects the temperature of described fin; With
Motion limits circuit, it obtains the temperature difference between the component temperature being detected by described component temperature transducer and the leaf temperature being detected by described leaf temperature transducer, be defined threshold above in the situation that at component temperature higher than leaf temperature and described temperature difference, generate the motion limits instruction of the described switch element action of restriction and export to the drive circuit of described switch element.
2. power module protection device according to claim 1, is characterized in that,
Described fin described power model is installed and do not have built-in described component temperature transducer without sensor power module,
Described motion limits circuit possesses:
Abnormality juding portion, it obtains described temperature difference, be defined threshold above in the situation that at component temperature higher than leaf temperature and described temperature difference, be judged to be to produce installation that power model installs to described fin abnormal or produced the abnormal heating of described switch element;
The first motion limits portion, it generates described motion limits instruction and exports to the drive circuit of described switch element in the time of the result of determination receiving from described abnormality juding portion; With
The second motion limits portion, it,, in the time of the result of determination receiving from described abnormality juding portion, generates the drive circuit that restriction is built in the motion limits instruction of the described action of the switch element without sensor power module and exports to this switch element.
3. power module protection device according to claim 1, is characterized in that,
Described fin described power model is installed and do not have built-in described component temperature transducer without sensor power module,
Described motion limits circuit possesses:
Abnormality juding portion, it obtains described temperature difference, is defined threshold above in the situation that in leaf temperature higher than component temperature and described temperature difference, is judged to be to be built in the described switch element without sensor power module and has produced abnormal heating;
The first motion limits portion, it generates described motion limits instruction and exports to the drive circuit of described switch element in the time of the result of determination receiving from described abnormality juding portion; With
The second motion limits portion, it,, in the time of the result of determination receiving from described abnormality juding portion, generates the drive circuit that restriction is built in the motion limits instruction of the described action of the switch element without sensor power module and exports to this switch element.
4. a power module protection device, is the power module protection device that switch element built-in in the power model to being installed in fin is protected, and it is characterized in that possessing:
Component temperature transducer, it is built in described power model, and detects the temperature of the switch element that is built in described power model;
Leaf temperature transducer, it detects the temperature of described fin; With
Motion limits circuit, it obtains the temperature difference between the component temperature being detected by described component temperature transducer and the leaf temperature being detected by described leaf temperature transducer, be defined threshold above in the situation that in this temperature difference, generate the motion limits instruction of the described switch element action of restriction and export to the drive circuit of described switch element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013053029A JP6049506B2 (en) | 2013-03-15 | 2013-03-15 | Power module protection device |
| JP2013-053029 | 2013-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747396U true CN203747396U (en) | 2014-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420086734.1U Expired - Fee Related CN203747396U (en) | 2013-03-15 | 2014-02-27 | Power module protective device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6049506B2 (en) |
| CN (1) | CN203747396U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109792218A (en) * | 2016-08-23 | 2019-05-21 | 日产自动车株式会社 | The temperature abnormality detection method of power-converting device and the temperature anomaly detection device of power-converting device |
| CN110425711A (en) * | 2019-09-05 | 2019-11-08 | 宁波奥克斯电气股份有限公司 | A kind of temprature control method of intelligent power module, device and air conditioner |
| CN110945777A (en) * | 2017-07-28 | 2020-03-31 | 日产自动车株式会社 | Instrument protection device and instrument protection method |
| CN112042099A (en) * | 2018-04-11 | 2020-12-04 | 日产自动车株式会社 | Device protection apparatus and device protection method |
| CN112567303A (en) * | 2018-08-22 | 2021-03-26 | 三菱电机株式会社 | Programmable logic controller, CPU unit, functional unit, method, and program |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6619393B2 (en) * | 2017-06-28 | 2019-12-11 | 三菱電機株式会社 | Power converter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3889562B2 (en) * | 2000-09-04 | 2007-03-07 | 株式会社日立製作所 | Semiconductor device |
| JP2005130568A (en) * | 2003-10-22 | 2005-05-19 | Toyota Motor Corp | Inspection method of power module |
| JP2005327855A (en) * | 2004-05-13 | 2005-11-24 | Hitachi Cable Ltd | Communications apparatus with temperature monitoring function and optical transceiver |
| IN2014CN03063A (en) * | 2011-10-06 | 2015-07-31 | Mitsubishi Electric Corp |
-
2013
- 2013-03-15 JP JP2013053029A patent/JP6049506B2/en not_active Expired - Fee Related
-
2014
- 2014-02-27 CN CN201420086734.1U patent/CN203747396U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109792218A (en) * | 2016-08-23 | 2019-05-21 | 日产自动车株式会社 | The temperature abnormality detection method of power-converting device and the temperature anomaly detection device of power-converting device |
| US10514309B2 (en) | 2016-08-23 | 2019-12-24 | Nissan Motor Co., Ltd. | Temperature abnormality detection method for power conversion device and temperature abnormality detection device for power conversion device |
| CN109792218B (en) * | 2016-08-23 | 2020-04-07 | 日产自动车株式会社 | Method and device for detecting temperature abnormality of power conversion device |
| CN110945777A (en) * | 2017-07-28 | 2020-03-31 | 日产自动车株式会社 | Instrument protection device and instrument protection method |
| CN110945777B (en) * | 2017-07-28 | 2023-10-10 | 日产自动车株式会社 | Instrument protection device and instrument protection method |
| CN112042099A (en) * | 2018-04-11 | 2020-12-04 | 日产自动车株式会社 | Device protection apparatus and device protection method |
| CN112567303A (en) * | 2018-08-22 | 2021-03-26 | 三菱电机株式会社 | Programmable logic controller, CPU unit, functional unit, method, and program |
| CN112567303B (en) * | 2018-08-22 | 2022-04-26 | 三菱电机株式会社 | Programmable logic controller, CPU unit and functional unit |
| CN110425711A (en) * | 2019-09-05 | 2019-11-08 | 宁波奥克斯电气股份有限公司 | A kind of temprature control method of intelligent power module, device and air conditioner |
| CN110425711B (en) * | 2019-09-05 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Temperature control method and device of intelligent power module and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6049506B2 (en) | 2016-12-21 |
| JP2014180157A (en) | 2014-09-25 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20190227 |