WO2022229149A1 - Verfahren zum steuern einer vorrichtung und schaltungsvorrichtung - Google Patents
Verfahren zum steuern einer vorrichtung und schaltungsvorrichtung Download PDFInfo
- Publication number
- WO2022229149A1 WO2022229149A1 PCT/EP2022/060996 EP2022060996W WO2022229149A1 WO 2022229149 A1 WO2022229149 A1 WO 2022229149A1 EP 2022060996 W EP2022060996 W EP 2022060996W WO 2022229149 A1 WO2022229149 A1 WO 2022229149A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transistor
- gate voltage
- current
- current flowing
- battery
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 3
- 230000005669 field effect Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/06—Modifications for ensuring a fully conducting state
- H03K17/063—Modifications for ensuring a fully conducting state in field-effect transistor switches
-
- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
Definitions
- the present invention relates to a method for controlling a device for establishing and separating an electric current flow between a battery and a load or a charging device and to a circuit device according to the preamble of the independent patent claims.
- BDU Battery Disconnect Unit
- a typical task of this electronic device is the controlled switching on and off of the battery when driving and charging. Another task is the safe separation of the battery from all other electrically connected components in the event of a fault.
- An electronic device is known from document US 2018131178 A1, which includes a p-channel metal-oxide-semiconductor field effect transistor (MOSFET).
- MOSFET metal-oxide-semiconductor field effect transistor
- Another electronic device comprising an n-channel MOSFET is known from document JP2010081757 A.
- a traction converter which is electrically connected to the electronic device as a load, is usually designed for approximately 8,000 operating hours during its service life of 15 years.
- the operating time of the electronic device thus corresponds to the sum of the operating times of all consumers and power sources.
- the electronic device is also provided for reliably blocking a current in its switched-off state. Therefore, the electronic device is almost always under an electrical stress.
- the lifetime of such an electronic device is usually dependent on the lifetime of transistors contained therein. This in turn depends on a gate voltage of the transistor. The higher the gate voltage is chosen and the longer the gate voltage is applied to the transistor, the shorter the expected lifetime of the transistor.
- a method for controlling a device for establishing and separating an electric current flow between a battery and a consumer or a charging device and a switching device with the characterizing features of the independent patent claims are provided.
- the device for establishing and separating an electrical current flow between a battery and a load or a charging device corresponds in terms of its functioning, for example, to an above-described electronic device in the form of a Battery Disconnect Unit (BDU) and includes at least one transistor.
- BDU Battery Disconnect Unit
- a gate voltage of the at least one transistor is set as a function of a current flowing through it.
- the gate voltage is set as a function of a temperature of the at least one transistor.
- the advantage of the method according to the invention is that the gate voltage of the at least one transistor is adjusted in different operating states of the same with regard to the current flowing through it or its temperature. In this way, the conduction losses of the at least one transistor can be reduced since the gate voltage has a direct influence on these conduction losses. The service life of the at least one transistor is thus lengthened.
- the gate voltage is advantageously increased when the current flowing through the at least one transistor exceeds a first predetermined value.
- this first predetermined value relates, for example, to an operating current of the at least one transistor.
- the gate voltage is also advantageously reduced when the current flowing through the at least one transistor falls below a second predetermined value.
- This second predetermined value can be equal to the first predetermined value, for example, and can represent an operating current of the at least one transistor.
- the gate voltage is set to a negative value for a predetermined period of time as soon as the device has been switched on and as long as the current flowing through the at least one transistor is not constant.
- the gate voltage is set to a negative value for a further predetermined period of time.
- the gate voltage is set to 0 volts (V) when the device has been switched off and as soon as the current flowing through the at least one transistor is equal to 0A.
- MOSFET metal-oxide-semiconductor field effect transistor
- the gate voltage is set to a negative value when the device has been turned off and as soon as the current flowing through the at least one transistor is equal to 0A.
- the at least one transistor in the form of a MOSFET or a traction inverter is reliably kept in an off state.
- the method described above can be advantageously used to control a device for establishing and interrupting an electric current flow between a battery and a load or a charging device in an electric vehicle (EV), in a hybrid vehicle (HEV) or in a plug-in hybrid vehicle (PHEV). use.
- EV electric vehicle
- HEV hybrid vehicle
- PHEV plug-in hybrid vehicle
- a circuit device comprising means for carrying out an afore-described method.
- the circuit device can be, for example, a previously described device for establishing and separating an electrical current flow between a battery and a load or a charging device.
- the circuit device can also be a USB mass storage device in which data for carrying out the method described above are stored.
- Figure 1 is a sectional view of a device for manufacturing
- Figure 2 shows an exemplary flow chart of a gate
- FIG. 3 shows an exemplary flow chart of a current or gate voltage curve over time according to a further method according to the invention.
- FIG. 1 shows a sectional view of a device 10 for producing and separating an electrical current flow between a battery and a consumer or a charger.
- the device 10 comprises, for example, a control unit 102 and a transistor 104.
- the transistor 104 can be a p-channel MOSFET, for example, and has three terminals 114, 124, 134.
- the gate terminal 114 is electronically connected to the control unit 102.
- the drain connection 124 is electronically connected to a current sensor 106 , for example.
- the source terminal 134 is electronically connected to a temperature sensor 108 in addition to the control unit 102 .
- the functioning of the transistor 104 is regulated by the control unit 102 . This can be done by storing a current and gate voltage curve of the transistor 104 to be achieved in the control unit 102 .
- FIG. 2 shows an exemplary flow chart of a gate voltage profile of a transistor 104 of a device 10 according to FIG. 1 over the current, in each case at a first and a second temperature.
- a minimum gate voltage U m in is required in order to activate the transistor 104 .
- the first gate voltage curve over the current at a first temperature Ti and the second gate voltage curve over the current at a second temperature T show that the gate voltage increases when the current increases while the temperature remains constant at the same time.
- the gate voltage of transistor 104 is increased from Ui to UT as the current through transistor 104 increases from In to IT while the temperature of transistor 104 is held constant at T .
- the two curves also show that the gate voltage increases when the temperature rises while the current remains constant at the same time.
- the gate voltage of transistor 104 is increased from Ui2 to Un as the temperature of transistor 104 increases from T2 to Ti while the current flowing through transistor 104 is held constant at In.
- FIG. 3 shows an exemplary flow chart of a current or voltage curve of a transistor 104 of a device 10 according to FIG. 1 over time according to a further method according to the invention.
- Transistor 104 remains deactivated until time ti. The current flowing through transistor 104 during this period is therefore 0A. At time ti the device 10 is switched on. At this point in time, a negative gate voltage Ui is applied to a gate connection 114 of the transistor 104 for a first period of time from ti to ⁇ 2 in order to activate the transistor 104 as quickly as possible since the transistor 104 is a p-channel MOSFET acts, which is activated with a negative gate voltage. Up to time ⁇ 2, the gate voltage is increased to U2 as soon as transistor 104 has been activated.
- the current flowing through the transistor 104 increases during a second time period from ⁇ 2 to ⁇ 3 until the current reaches a constant value of li .
- the gate voltage is kept unchanged at a voltage U2, for example.
- the current flowing through transistor 104 remains unchanged, for example.
- This current li is also referred to as the operating current. Accordingly, the gate voltage during this third Period reduced to U3, since the current li does not have a major impact on the on-state losses of the transistor 104.
- the current increases, for example, during a fourth time period ⁇ 4 to ts and exceeds the operating current li, for example due to an increased temperature of the transistor 104.
- the gate voltage is increased to U4 up to the point in time ts , at which the current drops again.
- the drop in current can be achieved, for example, by cooling the transistor 104 .
- device 10 is switched off.
- a negative voltage is applied to the gate terminal 114 of transistor 104 until the current flowing through transistor 104 equals 0A.
- Transistor 104 is kept in an off state from time ⁇ 7. In the off state, the gate voltage is 0V.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280031650.5A CN117223189A (zh) | 2021-04-30 | 2022-04-26 | 一种用于控制装置的方法和一种电路装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021204358.5 | 2021-04-30 | ||
DE102021204358.5A DE102021204358A1 (de) | 2021-04-30 | 2021-04-30 | Verfahren zum Steuern einer Vorrichtung und Schaltungsvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022229149A1 true WO2022229149A1 (de) | 2022-11-03 |
Family
ID=81850147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/060996 WO2022229149A1 (de) | 2021-04-30 | 2022-04-26 | Verfahren zum steuern einer vorrichtung und schaltungsvorrichtung |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN117223189A (de) |
DE (1) | DE102021204358A1 (de) |
WO (1) | WO2022229149A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010081757A (ja) | 2008-09-26 | 2010-04-08 | Sony Corp | バッテリ、バッテリの制御方法、充電器、電気機器、充電制御システム、及び、放電制御システム |
DE102017000922A1 (de) * | 2017-02-02 | 2017-08-17 | Daimler Ag | Variable Regelung einer Gatespannung zur Erhöhung der MOSFET-Lebensdauer |
US20180131178A1 (en) | 2015-05-20 | 2018-05-10 | Nissan Motor Co., Ltd. | Power supply control apparatus and method thereof |
-
2021
- 2021-04-30 DE DE102021204358.5A patent/DE102021204358A1/de active Pending
-
2022
- 2022-04-26 WO PCT/EP2022/060996 patent/WO2022229149A1/de active Application Filing
- 2022-04-26 CN CN202280031650.5A patent/CN117223189A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010081757A (ja) | 2008-09-26 | 2010-04-08 | Sony Corp | バッテリ、バッテリの制御方法、充電器、電気機器、充電制御システム、及び、放電制御システム |
US20180131178A1 (en) | 2015-05-20 | 2018-05-10 | Nissan Motor Co., Ltd. | Power supply control apparatus and method thereof |
DE102017000922A1 (de) * | 2017-02-02 | 2017-08-17 | Daimler Ag | Variable Regelung einer Gatespannung zur Erhöhung der MOSFET-Lebensdauer |
Also Published As
Publication number | Publication date |
---|---|
DE102021204358A1 (de) | 2022-11-03 |
CN117223189A (zh) | 2023-12-12 |
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