CN211151828U - Power supply device - Google Patents

Power supply device Download PDF

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Publication number
CN211151828U
CN211151828U CN201890000880.4U CN201890000880U CN211151828U CN 211151828 U CN211151828 U CN 211151828U CN 201890000880 U CN201890000880 U CN 201890000880U CN 211151828 U CN211151828 U CN 211151828U
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CN
China
Prior art keywords
space
power supply
supply device
power
switch circuit
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Active
Application number
CN201890000880.4U
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Chinese (zh)
Inventor
凑纯司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Automotive Electronic Systems Co ltd
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Panasonic Intellectual Property Management Co Ltd
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Publication of CN211151828U publication Critical patent/CN211151828U/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The power supply device has a first switch circuit, a second switch circuit, and a control circuit. The first switch circuit is accommodated in the first space and insulated from the outside. The second switch circuit is accommodated in a second space different from the first space and is not insulated from the outside. The control circuit is accommodated in the second space and controls the first switch circuit.

Description

Power supply device
Technical Field
The utility model relates to a carry power supply unit in vehicle.
Background
Conventionally, a power supply device mounted on an electric vehicle or the like is provided with a charger, a DC/DC converter (converter), an inverter (inverter), and the like. In such a power supply device, a voltage of power supplied from an external power supply is converted into a battery voltage by a charger, and the battery is charged with the power having the converted voltage. Also, the charged power is supplied to a DC/DC converter, an inverter, and the like.
The charger, the DC/DC converter, and the inverter are provided with switching elements, and high-frequency noise (hereinafter, noise) is generated by the switching elements in a circuit board or wiring in which circuits of these elements are arranged. Such noise may affect other circuits through the circuit board and the wiring.
In the technique described in patent document 1, a strong electric wiring through which a high-voltage signal flows and a weak electric wiring through which a low-voltage signal flows are arranged in a separated manner, thereby suppressing the influence of noise superimposed on the strong electric wiring on the weak electric wiring.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2016-220344
SUMMERY OF THE UTILITY MODEL
In the case of a small electric vehicle, a low-voltage (e.g., 48V) rated battery may be used as a driving battery. In the case of using such a low-voltage battery, a DC/DC converter, an inverter, and the like, to which power is supplied from the low-voltage battery, may not be insulated from the vehicle body. That is, the device is set in a non-insulated state with respect to the outside of the device. Therefore, even if noise is generated in the DC/DC converter or the inverter, the common mode current flowing to the vehicle body or the case can be reduced, and therefore the above-described problem is unlikely to occur.
On the other hand, the charger is insulated from the outside because it is supplied with electric power having a voltage corresponding to the external power supply, that is, a relatively high voltage. Therefore, there is a concern that: when noise is generated in the charger, a common mode current flowing to the vehicle body and the case is large, and thus other circuits are affected by the noise.
In this case, it is possible to cause the control circuit for controlling the charger to be affected by noise generated in the charger. In the configuration described in patent document 1, since the control circuit in the charger is not considered, there is a limit to some extent in reducing noise of the entire power supply device.
The present disclosure provides a power supply device capable of reducing the influence of noise generated in a switching circuit (e.g., a charger) requiring insulation.
A power supply device is provided with: a first switch circuit housed in the first space and insulated from the outside; a second switch circuit housed in a second space different from the first space and not insulated from the outside; and a control circuit housed in the second space and controlling the first switch circuit.
Preferably, the power supply device is mounted on a vehicle, and the exterior is a vehicle body.
Preferably, the mobile terminal further includes a wall for forming the second space, and the wall is provided with a connector for communicating with the outside.
Preferably, the switching device further includes a shielding unit that separates the first space from the second space and blocks noise generated from the first switching circuit.
Preferably, the shield portion dissipates heat to at least one of the first switch circuit and the second switch circuit.
Preferably, the apparatus further comprises a housing having the first space and the second space.
Preferably, the apparatus further comprises: a first housing having the first space; and a second housing having the second space.
Preferably, a first voltage is supplied to the first switch circuit, and a second voltage smaller than the first voltage is supplied to the second switch circuit.
Preferably, the first switching circuit includes a charger that converts ac power supplied from the outside into dc power to charge a battery, and the second switching circuit includes a power conversion circuit that converts power from the battery and supplies the converted power to a load.
According to the present disclosure, the influence of noise generated in a switching circuit (e.g., a charger) that requires insulation can be reduced.
Drawings
Fig. 1 is a block diagram illustrating a power supply device according to an embodiment of the present disclosure.
Fig. 2 is a diagram illustrating a structure of a power supply device according to an embodiment of the present disclosure.
Detailed Description
Embodiments of the present disclosure are described below in detail with reference to the drawings. Fig. 1 is a block diagram showing a power supply device 100 according to the present embodiment.
Power supply device 100 is mounted on a vehicle such as an electric vehicle, charges battery 20 with electric power supplied from external power supply 10, and supplies electric power from battery 20 to motor 30 and load 40. Further, the battery 20 is a low-voltage (e.g., 48V) rated battery that does not require insulation from the vehicle body.
The power supply device 100 includes a charger 110, a first control unit 120, a power conversion unit (hereinafter, referred to as a first conversion unit) 130, a second control unit 140, a load DC/DC conversion unit (hereinafter, referred to as a second conversion unit) 150, and a third control unit 160.
Charger 110, first control unit 120, first converter 130, second control unit 140, second converter 150, and third control unit 160 are housed in a case 200 connected to the vehicle body of the vehicle on which power supply device 100 is mounted.
The charger 110 as a first switching circuit converts power of a first voltage (for example, 100V) supplied from the external power supply 10 as an ac power supply into a second voltage (for example, 48V) smaller than the first voltage. Then, the voltage-converted electric power is supplied to the battery 20. The charger 110 includes a rectifying unit 111, a power factor improving unit 112, and a charging DC/DC converter (hereinafter, a third converter) 113.
The rectifier 111 full-wave rectifies the ac power (first voltage) received from the external power supply 10, converts the rectified power into dc power, and outputs the dc power to the power factor corrector 112.
The power factor improving unit 112 has a function of improving the power factor of the electric power input from the rectifying unit 111. The power factor correction unit 112 includes a switching element 112A.
The third converter 113 is a circuit that converts the output from the power factor corrector 112 into a second voltage that can be charged in the battery 20, and includes switching elements 113A, 113B, 113C, 113D, and the like. The third converter 113 is an insulation type DC/DC converter, and is divided into a high voltage region (DC 60V or more) requiring insulation and a low voltage region (DC 60V or less) requiring no insulation by a transformer (not shown).
The first control unit 120 as a control circuit controls the operation of the charger 110 by controlling the switching elements 112A, 113B, 113C, and 113D of the power factor correction unit 112 and the third conversion unit 113 to be turned on and off. That is, under the control of the first control section 120, the electric power supplied from the external power supply 10 is charged into the battery 20 via the charger 110.
The first converter 130 as a second switching circuit is a power conversion circuit that converts dc power (second voltage) supplied from the battery 20 into ac power. Specifically, the first converter 130 is a three-phase bridge inverter circuit that outputs the converted ac power to the motor 30, and includes switching elements, not shown. The switching elements of first converter 130 are turned on and off under the control of second controller 140, and thereby three-phase ac power is output to motor 30.
The second converter 150, which is a second switching circuit together with the first converter 130, converts the voltage (second voltage) of the electric power supplied from the battery 20 into a voltage that can be supplied to the load 40. The second converter 150 includes switching elements and the like, not shown. The switching element of the second converter 150 is turned on and off under the control of the third controller 160, and thereby the electric power supplied from the battery 20 is output to the load 40 via the second converter 150.
First control unit 120, second control unit 140, and third control unit 160 can communicate with vehicle control device 50 via connector 210 provided in case 200, and can control each unit of power supply device 100 by the control of vehicle control device 50. Further, since the first control unit 120, the second control unit 140, and the third control unit 160 operate at a low voltage, insulation from the vehicle body is not required.
Since the circuit used in the power supply device 100 is provided with a switching element, high-frequency noise may be generated in the circuit board and the wiring, and the high-frequency noise may affect other circuit blocks.
Since the first converter 130 and the second converter 150 are supplied with the second voltage, which is a relatively low voltage, by the charger 110 or the like, they are electrically connected to the vehicle body, which is the outside of the power supply device 100, via the case 200, that is, they are in a non-insulated state from the outside. Therefore, even if noise is generated in the first converter 130 and the second converter 150, the loop (loop) of the common mode current can be reduced, and thus the above problem is less likely to occur.
In contrast, the charger 110 is supplied with electric power corresponding to the external power supply 10, that is, with electric power of a relatively high voltage (first voltage). Therefore, it is necessary to be electrically insulated from the housing 200 and thus from the vehicle body, that is, to be insulated from the outside. Accordingly, when noise is generated in the charger 110, a loop of the common mode current increases, and thus the amount of noise generation increases.
As a result, noise may be transmitted to the first conversion unit 130 and the second conversion unit 150, and the first conversion unit 130 and the second conversion unit 150 may be affected by the noise.
Therefore, as shown in fig. 2, in the present embodiment, charger 110 insulated from the outside of power supply apparatus 100 and first converting unit 130 and second converting unit 150, which are set in a non-insulated state from the outside of power supply apparatus 100, are provided in casing 200 so as to be disposed in different spaces.
Housing 200 has first space 201 in which charger 110 is disposed and second space 202 in which first converting unit 130 and second converting unit 150 are disposed. The shielding part 220 is located between the first space 201 and the second space 202.
The shield part 220 is a wall that separates the first space 201 from the second space 202, and has a function of blocking noise generated in either one of the first space 201 and the second space 202. That is, noise generated in the charger 110 is blocked by separating the first space 201 from the second space 202 by the shield part 220. As a result, noise can be suppressed from being transmitted to the first conversion unit 130 and the second conversion unit 150. As a result, noise can be suppressed from being transmitted to the entire power supply device 100.
Further, the charger 110 is controlled by the first control unit 120, and when noise is generated in the charger 110, the first control unit 120 may be affected by the noise. Therefore, the entire power supply apparatus 100 may be affected by the noise through the first control unit 120.
Therefore, in the present embodiment, the first control unit 120 is housed in the second space 202. Thus, first control unit 120 and first conversion unit 130 and second conversion unit 150, which are not insulated from the outside of power supply device 100, are located in the same space. In other words, the first control unit 120 is located in a different space from the charger 110. Therefore, noise generated in the charger 110 is less likely to be transmitted to the first control unit 120, and thus the first control unit 120 can be less affected by the noise.
In other words, first control unit 120 is located in the same space as first converting unit 130 and second converting unit 150 that are not insulated from the outside of power supply device 100.
Here, as described above, since first converter 130 and second converter 150 are in a non-insulated state with respect to the outside of power supply device 100, first controller 120 is less affected by noise from first converter 130 and second converter 150.
In general, the charger 110 is used when the vehicle is parked, and the first conversion unit 130 as an inverter is used when the vehicle is traveling. That is, since charger 110 exclusively operates with first conversion unit 130, first control unit 120 receives little influence of noise from first conversion unit 130.
Further, a hole (not shown) is formed in the shield portion 220, and the wiring 101 connecting the charger 110 and the first control portion 120 is inserted through the hole, and for example, an L CR filter 170 for reducing noise is provided in the wiring 101, whereby it is possible to further reduce noise transmitted from the charger 110 to the first control portion 120 via the wiring 101.
In addition, it is preferable that at least the wiring 101 located in the first space 201 is subjected to noise shielding. This can reduce the possibility of noise from charger 110 being superimposed on wiring 101. Further, when the first control unit 120 is mounted in the first space 201, the first control unit 120 itself needs noise shielding, which increases the cost.
In addition, the connector 210 is provided to a wall forming the second space 202 in the housing 200. Therefore, the signal line from the vehicle control device 50 can be suppressed from being affected by the noise generated by the charger 110.
Further, the shield 220 is provided with a heat sink 221. A plurality of fins 221 are provided side by side in the left-right direction in fig. 2. Further, the charger 110 is disposed in the first space 201 at a position close to the shield part 220. The first converter 130 and the second converter 150 are disposed in the second space 202 at positions close to the shield 220.
Thus, heat generated by charger 110, first converter 130, and second converter 150, which generate a relatively large amount of heat, can be dissipated to the outside of power supply device 100 via heat sink 221.
The power supply device 100 in the above embodiment is configured by one case 200, but is not limited to this configuration. For example, the power supply device 100 may be configured by a first housing having the first space 201 and a second housing having the second space 202.
In the above embodiment, shield unit 220 has heat radiation fins 221 capable of radiating heat from both charger 110 and first and second conversion units 130 and 150, but is not limited to this configuration. For example, heat sink 221 provided in shield 220 may be configured to be able to dissipate heat from charger 110 and any one of first converter 130 and second converter 150, or shield 220 may be configured without heat sink 221.
In addition, the above embodiments are merely specific examples for implementing the present disclosure, and the technical scope of the present disclosure cannot be interpreted in a limited manner. That is, the present disclosure can be implemented in various forms without departing from the spirit or the main features thereof.
Industrial applicability
The power supply device of the present disclosure is useful as a power supply device capable of reducing the influence of noise generated in a switching circuit (for example, a charger) requiring insulation.
Description of the reference numerals
10: an external power source, 20: a battery, 30: a motor, 40: a load, 50: a vehicle control device, 100: a power supply device, 101: a wiring, 110: a charger, 111: a rectifying unit, 112: a power factor improving unit, 112A, 113B, 113C, 113D: a switching element, 113: a charging DC/DC converting unit (third converting unit), 120: a first control unit, 130: a power converting unit (first converting unit), 140: a second control unit, 150: a load DC/DC converting unit (second converting unit), 160: a third controlling unit, 170: L CR filter, 200: a housing, 201: a first space, 202: a second space, 210: a connector, 220: a shielding unit, 221: a heat radiating fin.

Claims (9)

1. A power supply device is characterized by comprising:
a first switch circuit housed in the first space and insulated from the outside;
a second switch circuit housed in a second space different from the first space and not insulated from the outside; and
and a control circuit which is accommodated in the second space and controls the first switch circuit.
2. The power supply device according to claim 1,
the power supply device is mounted on a vehicle,
the exterior is a vehicle body.
3. The power supply device according to claim 1,
further provided with a wall for forming said second space,
a connector is provided at the wall for communicating with the exterior.
4. The power supply device according to claim 1,
the first switch circuit is configured to be able to switch the first space and the second space, and the second switch circuit is configured to be able to switch the first space and the second space.
5. The power supply device according to claim 4,
the shield unit dissipates heat from at least one of the first switch circuit and the second switch circuit.
6. The power supply device according to claim 1,
the housing further includes a housing having the first space and the second space.
7. The power supply device according to claim 1, further comprising:
a first housing having the first space; and
a second housing having the second space.
8. The power supply device according to claim 1,
supplying a first voltage to the first switching circuit,
supplying a second voltage smaller than the first voltage to the second switch circuit.
9. The power supply device according to claim 1,
the first switching circuit includes a charger that converts alternating-current power supplied from the outside into direct-current power to charge a battery,
the second switch circuit includes a power conversion circuit that converts power from the battery and supplies the converted power to a load.
CN201890000880.4U 2017-07-14 2018-05-30 Power supply device Active CN211151828U (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2017-138054 2017-07-14
JP2017138054A JP2019022300A (en) 2017-07-14 2017-07-14 Power supply device
PCT/JP2018/020691 WO2019012835A1 (en) 2017-07-14 2018-05-30 Power supply device

Publications (1)

Publication Number Publication Date
CN211151828U true CN211151828U (en) 2020-07-31

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Application Number Title Priority Date Filing Date
CN201890000880.4U Active CN211151828U (en) 2017-07-14 2018-05-30 Power supply device

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JP (1) JP2019022300A (en)
CN (1) CN211151828U (en)
WO (1) WO2019012835A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7153137B2 (en) * 2019-05-21 2022-10-13 日立Astemo株式会社 Power converter and electric drive unit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4895968B2 (en) * 2007-10-05 2012-03-14 日立オートモティブシステムズ株式会社 Power converter
CN104604354B (en) * 2012-08-29 2018-03-30 三菱电机株式会社 Vehicle-mounted power conversion device
JP2014110286A (en) * 2012-11-30 2014-06-12 Toyota Industries Corp Power conversion device
CN107925356B (en) * 2015-08-06 2020-11-10 日立汽车系统株式会社 Charger integrated with DCDC converter

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JP2019022300A (en) 2019-02-07

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Effective date of registration: 20240326

Address after: Kanagawa Prefecture, Japan

Patentee after: Panasonic Automotive Electronic Systems Co.,Ltd.

Country or region after: Ri Ben

Address before: Osaka, Japan

Patentee before: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT Co.,Ltd.

Country or region before: Ri Ben