CN111913032A - Current acquisition integrated structure of new energy motor controller - Google Patents
Current acquisition integrated structure of new energy motor controller Download PDFInfo
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- CN111913032A CN111913032A CN202010656871.4A CN202010656871A CN111913032A CN 111913032 A CN111913032 A CN 111913032A CN 202010656871 A CN202010656871 A CN 202010656871A CN 111913032 A CN111913032 A CN 111913032A
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- copper bar
- motor
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052802 copper Inorganic materials 0.000 claims abstract description 54
- 239000010949 copper Substances 0.000 claims abstract description 54
- 230000003321 amplification Effects 0.000 claims abstract description 27
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 27
- 239000000178 monomer Substances 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims 6
- 238000003780 insertion Methods 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention is suitable for the field of motor controllers, provides a current acquisition integrated structure of a new energy motor controller, the current collection integrated structure comprises a first current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a bus copper bar and a second current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a U-phase copper bar of a motor and a signal input end of a second differential amplification circuit, a third current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a V-phase copper bar of a motor and a signal input end of a third differential amplification circuit, and the first differential amplification circuit or the second differential amplification circuit or a power output end of the third differential amplification circuit are respectively connected with the first current sensor unit, the second current sensor unit and a power input end of the third current sensor unit. The technical problem of high cost of a motor controller in the prior art is solved.
Description
Technical Field
The invention belongs to the field of motor controllers, and particularly relates to a current acquisition integrated structure of a new energy motor controller.
Background
With the increasing increase of energy shortage and environmental pollution problems, the development of new energy electric vehicles is greatly promoted in response to national calls, the market share of the new energy electric vehicles is gradually increased year by year from 2015, and a plurality of countries continuously publish the years of forbidden fuel vehicles, so that the electric driving of the vehicles becomes a necessary trend in the future.
Under the condition of high subsidy in China and regions in early days, the whole industry chain is rapidly developed in the gold stage of new-energy automobiles, then subsidies are subsidized to retreat from the slope, and the cost is reduced to be the inevitable trend, and meanwhile, the user has higher requirements on the performance and the reliability of parts of the motor controller. In the design of a motor controller, a three-phase current acquisition sensor is inevitably used, and the device accounts for 8% of the cost of the controller and also becomes one of key objects for reducing the cost.
Disclosure of Invention
The invention aims to provide a current collection integrated structure of a new energy motor controller, and aims to solve the technical problem that the motor controller in the prior art is high in cost.
The invention is realized in such a way that the current acquisition integrated structure of the new energy motor controller, the current collection integrated structure comprises a first current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a bus copper bar and a second current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a U-phase copper bar of a motor and a signal input end of a second differential amplification circuit, a third current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a V-phase copper bar of a motor and a signal input end of a third differential amplification circuit, and the first differential amplification circuit or the second differential amplification circuit or a power output end of the third differential amplification circuit are respectively connected with the first current sensor unit, the second current sensor unit and a power input end of the third current sensor unit.
The further technical scheme of the invention is as follows: the current sensor monomer comprises a first magnetic ring of which the input end is connected with a bus copper bar, and the input end is connected with a Hall chip of which the output end is connected with the signal input end of the first magnetic ring and the signal output end is connected with the signal input end of the first differential amplification circuit.
The further technical scheme of the invention is as follows: the structure of the current sensor single body I is the same as that of the current sensor single body II or that of the current sensor single body III.
The further technical scheme of the invention is as follows: and the power output end of the first differential amplification circuit or the second differential amplification circuit or the third differential amplification circuit is respectively connected with the power input ends of the first current sensor monomer, the second current sensor monomer and the third current sensor monomer through low-voltage wiring harnesses.
The further technical scheme of the invention is as follows: the current collection integrated structure further comprises a shell used for fixing the first current sensor unit, the second current sensor unit and the third current sensor unit.
The further technical scheme of the invention is as follows: the shell is provided with a bus copper bar access hole for inserting a bus copper bar, a motor U-phase copper bar access hole for inserting a motor U-phase copper bar, a motor V-phase copper bar access hole for inserting the motor V-phase copper bar, a bus copper bar access hole for inserting the bus copper bar into the supporting capacitor, a motor U-phase copper bar connecting hole for inserting and connecting a motor U-phase copper bar into an IGBT inversion, a motor V-phase copper bar connecting hole for inserting and connecting a motor V-phase copper bar into an IGBT inversion, the current sensor single body signal output port, the current sensor single body two signal output port and the current sensor single body three signal output port are used for the current sensor single body one, the current sensor single body two and the current sensor single body three signal output port, and the power supply input port is used for connecting the current sensor single body one, the current sensor single body two and the current sensor single body three power supply input port.
The invention has the beneficial effects that: by adopting the current collection integrated structure, the cost of the new energy motor controller can be effectively reduced, and meanwhile, the same batch of Hall chips are arranged in the current sensor monomer, so that the consistency and the stability of the product are improved.
Drawings
Fig. 1 is a block diagram of a current collection integrated structure of a new energy motor controller according to an embodiment of the present invention;
fig. 2 is a block diagram of an integrated current collection structure of a new energy motor controller according to an embodiment of the present invention.
Detailed Description
Figures 1-2 show the current collection integrated structure of a new energy motor controller provided by the invention, the current collection integrated structure comprises a first current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a bus copper bar and a second current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a U-phase copper bar of a motor and a signal input end of a second differential amplification circuit, a third current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a V-phase copper bar of a motor and a signal input end of a third differential amplification circuit, and the first differential amplification circuit or the second differential amplification circuit or a power output end of the third differential amplification circuit are respectively connected with the first current sensor unit, the second current sensor unit and a power input end of the third current sensor unit.
The current sensor monomer comprises a first magnetic ring of which the input end is connected with a bus copper bar, and the input end is connected with a Hall chip of which the output end is connected with the signal input end of the first magnetic ring and the signal output end is connected with the signal input end of the first differential amplification circuit.
The structure of the current sensor single body I is the same as that of the current sensor single body II or that of the current sensor single body III.
And the power output end of the first differential amplification circuit or the second differential amplification circuit or the third differential amplification circuit is respectively connected with the power input ends of the first current sensor monomer, the second current sensor monomer and the third current sensor monomer through low-voltage wiring harnesses.
The current collection integrated structure further comprises a shell used for fixing the first current sensor unit, the second current sensor unit and the third current sensor unit.
The shell is provided with a bus copper bar access hole for inserting a bus copper bar, a motor U-phase copper bar access hole for inserting a motor U-phase copper bar, a motor V-phase copper bar access hole for inserting the motor V-phase copper bar, a bus copper bar access hole for inserting the bus copper bar into the supporting capacitor, a motor U-phase copper bar connecting hole for inserting and connecting a motor U-phase copper bar into an IGBT inversion, a motor V-phase copper bar connecting hole for inserting and connecting a motor V-phase copper bar into an IGBT inversion, the current sensor single body signal output port, the current sensor single body two signal output port and the current sensor single body three signal output port are used for the current sensor single body one, the current sensor single body two and the current sensor single body three signal output port, and the power supply input port is used for connecting the current sensor single body one, the current sensor single body two and the current sensor single body three power supply input port.
The bus and the current-carrying copper bar of the motor phase line pass through the current sensor monomer (further explanation, the current sensor monomer is fixed on the shell through a screw), then the current signal is transmitted to the differential amplifying circuit and the filter circuit by using a low-voltage wiring harness (further explanation, each current sensor monomer uses 3 wires, namely a power wire VCC, a ground wire GND and a current signal output wire Vout), and finally the current signal is sent to an ADC unit of the control chip to read the respective current value, further supplement the explanation, the current-carrying copper bar passes through a magnetic ring arranged in the current sensor monomer, the current-carrying copper bar is detected by a Hall chip by utilizing the Hall effect and is output to a Vout pin, and the power wire VCC and the ground wire GND supply power to the Hall chip.
By adopting the current collection integrated structure, the cost of the new energy motor controller can be effectively reduced, and meanwhile, the same batch of Hall chips are arranged in the current sensor monomer, so that the consistency and the stability of the product are improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A current collection integrated structure of a new energy motor controller is characterized by comprising a first current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a bus copper bar and a signal input end of a first differential amplification circuit, a second current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a U-phase copper bar of a motor and a signal input end of a second differential amplification circuit, a third current sensor unit with a high-voltage input end connected with a low-voltage signal output end of a V-phase copper bar of the motor and a signal input end of a third differential amplification circuit, and the power supply output end of the first differential amplifying circuit or the second differential amplifying circuit or the third differential amplifying circuit is respectively connected with the power supply input ends of the first current sensor monomer, the second current sensor monomer and the third current sensor monomer.
2. The integrated current collection structure according to claim 1, wherein the current sensor unit comprises a first magnetic ring with an input end connected with a bus copper bar, and a hall chip with an input end connected with a signal output end of the first magnetic ring and a signal output end connected with a signal input end of the first differential amplification circuit.
3. The current collection integrated structure of claim 2, wherein the first current sensor unit has the same structure as the second current sensor unit or the third current sensor unit.
4. The current collection integrated structure according to claim 1, wherein a power output end of the first differential amplifier circuit, the second differential amplifier circuit or the third differential amplifier circuit is connected to a power input end of the first current sensor unit, a power input end of the second current sensor unit and a power output end of the third current sensor unit through low-voltage wiring harnesses.
5. The current collection integrated structure according to claim 1, further comprising a housing for fixing the first current sensor unit, the second current sensor unit, and the third current sensor unit.
6. The integrated current collection structure according to claim 5, wherein the housing is provided with a busbar copper bar insertion hole for inserting a busbar copper bar, a motor U-phase copper bar insertion hole for inserting a motor U-phase copper bar, a motor V-phase copper bar insertion hole for inserting a motor V-phase copper bar, a busbar copper bar insertion hole for inserting a busbar copper bar into a support capacitor, a motor U-phase copper bar insertion hole for inserting a motor U-phase copper bar into an IGBT inverter, a motor V-phase copper bar insertion hole for inserting a motor V-phase copper bar into an IGBT inverter, a current sensor single unit one signal output port, a current sensor single unit two signal output port and a current sensor single unit three signal output port for the current sensor single unit one, the current sensor single unit two signal output port and the current sensor single unit three signal output port, and a signal output port for connecting the current sensor single unit one, the current sensor single unit two, And the current sensor monomer II and the current sensor monomer III are arranged at the power supply input ports of the power supply input ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656871.4A CN111913032A (en) | 2020-07-09 | 2020-07-09 | Current acquisition integrated structure of new energy motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656871.4A CN111913032A (en) | 2020-07-09 | 2020-07-09 | Current acquisition integrated structure of new energy motor controller |
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| Publication Number | Publication Date |
|---|---|
| CN111913032A true CN111913032A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010656871.4A Pending CN111913032A (en) | 2020-07-09 | 2020-07-09 | Current acquisition integrated structure of new energy motor controller |
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| Country | Link |
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| CN (1) | CN111913032A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607987A (en) * | 2021-07-30 | 2021-11-05 | 重庆长安汽车股份有限公司 | Current sensor structure |
Citations (8)
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|---|---|---|---|---|
| CN105699764A (en) * | 2016-03-21 | 2016-06-22 | 威胜集团有限公司 | Hall-sensor-based electric energy meter |
| CN205656227U (en) * | 2016-03-08 | 2016-10-19 | 武汉合康智能电气有限公司 | On -vehicle motor output current sampling circuit that fills |
| CN206313695U (en) * | 2016-12-23 | 2017-07-07 | 广东高标电子科技有限公司 | Power device control and overheat protector system for electric machine controller |
| CN206515387U (en) * | 2016-12-16 | 2017-09-22 | 联合汽车电子有限公司 | Current sensing means and current detecting system |
| CN207835378U (en) * | 2018-02-27 | 2018-09-07 | 北京新能源汽车股份有限公司 | Motor drive controller and car |
| CN209148753U (en) * | 2018-10-17 | 2019-07-23 | 深圳英驱新能源有限公司 | A kind of electricity driving device |
| CN110868129A (en) * | 2019-12-18 | 2020-03-06 | 中克骆瑞新能源科技有限公司 | Motor controller |
| CN210297553U (en) * | 2019-06-19 | 2020-04-10 | 深圳市大地和电气股份有限公司 | Integrated controller mounting structure |
-
2020
- 2020-07-09 CN CN202010656871.4A patent/CN111913032A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205656227U (en) * | 2016-03-08 | 2016-10-19 | 武汉合康智能电气有限公司 | On -vehicle motor output current sampling circuit that fills |
| CN105699764A (en) * | 2016-03-21 | 2016-06-22 | 威胜集团有限公司 | Hall-sensor-based electric energy meter |
| CN206515387U (en) * | 2016-12-16 | 2017-09-22 | 联合汽车电子有限公司 | Current sensing means and current detecting system |
| CN206313695U (en) * | 2016-12-23 | 2017-07-07 | 广东高标电子科技有限公司 | Power device control and overheat protector system for electric machine controller |
| CN207835378U (en) * | 2018-02-27 | 2018-09-07 | 北京新能源汽车股份有限公司 | Motor drive controller and car |
| CN209148753U (en) * | 2018-10-17 | 2019-07-23 | 深圳英驱新能源有限公司 | A kind of electricity driving device |
| CN210297553U (en) * | 2019-06-19 | 2020-04-10 | 深圳市大地和电气股份有限公司 | Integrated controller mounting structure |
| CN110868129A (en) * | 2019-12-18 | 2020-03-06 | 中克骆瑞新能源科技有限公司 | Motor controller |
Non-Patent Citations (1)
| Title |
|---|
| 邵汝峰 等: "《铁路移动通信系统》", vol. 2, 中国铁道出版社, pages: 178 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607987A (en) * | 2021-07-30 | 2021-11-05 | 重庆长安汽车股份有限公司 | Current sensor structure |
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Application publication date: 20201110 |
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