CN109435877B - Control system for preventing and controlling failure of negative mechanical type main power switch for electric passenger car - Google Patents
Control system for preventing and controlling failure of negative mechanical type main power switch for electric passenger car Download PDFInfo
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- CN109435877B CN109435877B CN201811542944.6A CN201811542944A CN109435877B CN 109435877 B CN109435877 B CN 109435877B CN 201811542944 A CN201811542944 A CN 201811542944A CN 109435877 B CN109435877 B CN 109435877B
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- power switch
- main power
- small charger
- whole vehicle
- mechanical
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- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention discloses a control system for preventing and controlling failure of a negative mechanical type main power switch for an electric passenger car, which comprises a low-voltage storage battery, a low-voltage storage battery anode, a low-voltage storage battery cathode, a safety device, a small charger anode output, a small charger cathode output, a whole car controller, a mechanical type main power switch and a car body framework, wherein the small charger anode output is connected with the low-voltage storage battery anode through the safety device. The beneficial effects of the invention are as follows: the invention collects the feedback signal output by the position sensor according to the position change of the on-off of the mechanical main power switch and sends the feedback signal to the whole vehicle controller by arranging the position sensor on the mechanical main power switch. The whole vehicle controller processes the feedback signal by adding a signal acquisition port and control logic so as to control the start and stop of the small charger. The problem of failure of the control negative main power switch is fundamentally solved, and the safety and reliability of the whole vehicle are improved. The invention has good social benefit and is suitable for popularization and application.
Description
Technical Field
The invention relates to a control system, in particular to a control system for preventing and controlling the failure of a negative mechanical type main power switch for an electric passenger car, and belongs to the technical field of application of control systems for preventing and controlling the failure of the negative mechanical type main power switch.
Background
At present, mechanical total power switch control of an electric motor coach is mainly divided into two types, wherein one type is to control the power supply of the whole coach by controlling the on-off of a negative electrode of a low-voltage storage battery and a framework of the coach body, namely so-called negative control. Along with the development of electric buses, the EMC grade requirements on the whole bus and parts are also higher.
The small battery charger manufacturers in the current market basically improve the EMC level of the small battery charger by connecting an output negative electrode with a machine body, and most of small battery charger manufacturers in the whole automobile are also improved by directly connecting new energy components with a car body framework. That is, after the small charger is loaded, the output cathode of the small charger is communicated with the machine body through the machine body, so that the small charger is connected with the whole car framework. Therefore, the negative electrode output of the small charger is controlled by the mechanical type main power switch, and the mechanical type main power switch is disconnected when the mechanical type main power switch is closed, but the small charger still plays the role of the low-voltage storage battery to continuously supply power to the electric equipment of the whole car at the moment, the whole car cannot be powered down, and the mechanical type main power switch controlled by the negative electrode fails to work, so that the safety of the whole car is affected.
Disclosure of Invention
The invention aims to solve the problems that in the prior market, small battery manufacturers basically connect an output negative electrode with a machine body to improve the EMC level of the small battery manufacturers, and most of the small battery manufacturers also directly connect new energy components with a car body framework to improve the EMC level of the whole car, so that the negative electrode output of the small battery is controlled by an uncontrolled mechanical total power switch, and when the mechanical total power switch is closed, the connection between a low-voltage storage battery and electric equipment of the whole car is disconnected, the small battery works at the moment to play the role of the low-voltage storage battery to continuously supply power to the electric equipment of the whole car, the whole car cannot be powered down, the mechanical total power switch for controlling the negative is failed, and the safety of the whole car is influenced.
The aim of the invention can be achieved by the following technical scheme: the utility model provides a control system that electronic passenger car was with preventing controlling negative mechanical type total power switch inefficacy, includes low-voltage battery, low-voltage battery positive pole, low-voltage battery negative pole, insurance, little machine that charges, little machine positive pole output, little machine negative pole output, whole car controller, mechanical type total power switch and automobile body skeleton, little machine positive pole output is connected with low-voltage battery positive pole through insurance, low-voltage battery negative pole passes through mechanical type total power switch and links to each other with the automobile body skeleton, little machine negative pole output links to each other with the automobile body skeleton, whole car controller and little machine communication connection that charges.
The invention further adopts the technical proposal that: and the mechanical general power switch is provided with a position sensor which is in communication connection with the whole vehicle controller.
The invention further adopts the technical proposal that: and the whole vehicle controller is connected with the small battery charger through an external CAN circuit.
The control method of the system specifically comprises the following steps:
step one: the mechanical type main power switch controls the whole vehicle power supply by controlling the on-off of the cathode of the low-voltage storage battery and the vehicle body framework, and a position sensor is arranged on the mechanical type main power switch to acquire a feedback signal output by the position sensor according to the on-off position change of the mechanical type main power switch to the whole vehicle controller, and the whole vehicle controller judges whether the mechanical type main power switch is in a closed state or not according to the feedback signal;
step two: if the whole vehicle controller judges that the mechanical type main power switch is in a closed state, outputting a small charger enabling signal, and operating the small charger, if the whole vehicle controller judges that the mechanical type main power switch is in an open state, stopping outputting the small charger enabling signal, and stopping the small charger, wherein the method is used for controlling the start and stop of the small charger, so that the situation that the whole vehicle cannot complete power down due to the fact that the small charger is still operating when the mechanical type main power switch is closed is avoided, and the mechanical type main power switch fails.
Compared with the prior art, the invention has the beneficial effects that: the invention collects the feedback signal output by the position sensor according to the position change of the on-off of the mechanical main power switch and sends the feedback signal to the whole vehicle controller by arranging the position sensor on the mechanical main power switch. The whole vehicle controller processes the feedback signal by adding a signal acquisition port and control logic so as to control the start and stop of the small charger. The problem of failure of the control negative main power switch is fundamentally solved, and the safety and reliability of the whole vehicle are improved. The invention has good social benefit and is suitable for popularization and application.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic diagram of the overall structure connection of the present invention.
In the figure: 1. a low voltage battery; 2. a low voltage battery positive electrode; 3. safety; 4. the positive electrode of the small charger is output; 5. a small charger; 6. the cathode output of the small charger; 51. a vehicle body skeleton; 7. a vehicle controller; 8. a mechanical main power switch; 9. a position sensor; 10. and a negative electrode of the low-voltage storage battery.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a control system for preventing and controlling failure of a negative mechanical total power switch for an electric passenger car comprises a low-voltage storage battery 1, a low-voltage storage battery anode 2, a low-voltage storage battery cathode 10, a safety 3, a small charger 5, a small charger anode output 4, a small charger cathode output 6, a whole car controller 7, a mechanical total power switch 8 and a car body framework 51, wherein the small charger anode output 4 is connected with the low-voltage storage battery anode 2 through the safety 3, the low-voltage storage battery cathode 10 is connected with the car body framework 51 through the mechanical total power switch 8, the small charger 5 cathode output 6 is connected with the car body framework 51, and the whole car controller 7 is in communication connection with the small charger 5.
As a technical optimization scheme of the invention, the mechanical main power switch 8 is provided with the position sensor 9, the position sensor 9 is in communication connection with the whole vehicle controller 7, and the feedback signal output by the position sensor 9 according to the position change of the on-off state of the mechanical main power switch 8 is collected by arranging the position sensor 9 on the mechanical main power switch 8 and is sent to the whole vehicle controller 7. The whole vehicle controller 7 processes the feedback signal by adding a signal acquisition port and control logic so as to control the start and stop of the small charger 5. The problem of failure of the control negative main power switch is fundamentally solved, and the safety and reliability of the whole vehicle are improved.
As a technical optimization scheme of the invention, the whole vehicle controller 7 is connected with the small charger 5 through an external CAN (controller area network) line, so that the remote monitoring CAN collect the working state of the small charger, the working state of the small charger CAN be monitored in real time through the CAN connection of the whole vehicle controller, if the small charger fails, a fault code CAN be sent to the whole vehicle controller, the whole vehicle controller is transferred to an instrument, the instrument alarms, and the feeding of a storage battery caused by the fault of the small charger CAN be prevented.
The control method of the system specifically comprises the following steps:
step one: the mechanical type main power switch 8 controls the power supply of the whole vehicle by controlling the on-off of the cathode 10 of the low-voltage storage battery and the vehicle body framework 51, and the position sensor 9 is arranged on the mechanical type main power switch 8 to collect a feedback signal output by the position sensor 9 according to the on-off position change of the mechanical type main power switch 8 to the whole vehicle controller 7, and the whole vehicle controller 7 judges whether the mechanical type main power switch 8 is in a closed state or not according to the feedback signal;
step two: if the whole vehicle controller 7 judges that the mechanical type total power switch 8 is in a closed state, the small charger 5 is output to enable the small charger 5 to work, if the whole vehicle controller 7 judges that the mechanical type total power switch 8 is in an open state, the small charger 5 is stopped to enable the small charger 5 to stop working, the method controls the start and stop of the small charger 5, and the problem that the small charger 5 still works to cause the whole vehicle to be unable to complete power down and the mechanical type total power switch 8 is invalid when the mechanical type total power switch 8 is closed is avoided.
The beneficial effects of the invention are as follows: the invention collects the feedback signal output by the position sensor 9 according to the position change of the on-off state of the mechanical main power switch 8 to the whole vehicle controller 7 by arranging the position sensor 9 on the mechanical main power switch 8. The whole vehicle controller 7 processes the feedback signal by adding a signal acquisition port and control logic so as to control the start and stop of the small charger 5. The problem of failure of the control negative main power switch is fundamentally solved, and the safety and reliability of the whole vehicle are improved. The invention has good social benefit and is suitable for popularization and application.
Working principle: when the invention is used, firstly, the safety of the invention is checked, then, the mechanical main power switch 8 is controlled by controlling the on-off of the cathode 10 of the low-voltage storage battery and the vehicle body framework 51, the small charger 5 enabling signal is output through the position sensor 9 (the position sensor is not limited to the model, the model and the triggering mode can be changed according to different installation and use modes) which is arranged on the mechanical main power switch 8, the feedback signal output by the position sensor 9 according to the on-off position change of the mechanical main power switch 8 is collected to the whole vehicle controller 7 which is of the model AKECU-1, the whole vehicle controller 7 judges whether the mechanical main power switch 8 is in a closed state through the feedback signal, if the whole vehicle controller 7 judges that the mechanical main power switch 8 is in the closed state, the small charger 5 enabling signal is output, and if the whole vehicle controller 7 judges that the mechanical main power switch 8 is in the open state, the small charger 5 enabling signal is stopped, the small charger 5 stops working, the method is used for controlling the small charger 5 to stop working, and the mechanical main power switch 8 can not be completely stopped when the mechanical main power switch 8 is turned off, and the mechanical main power switch 8 is not completely stopped.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (2)
1. The utility model provides a control system of electronic passenger train with preventing controlling negative mechanical type master power switch inefficacy which characterized in that: the intelligent charging system comprises a low-voltage storage battery (1), a low-voltage storage battery anode (2), a low-voltage storage battery cathode (10), a safety device (3), a small charger (5), a small charger anode output (4), a small charger cathode output (6), a whole vehicle controller (7), a mechanical main power switch (8) and a vehicle body framework (51), wherein the small charger anode output (4) is connected with the low-voltage storage battery anode (2) through the safety device (3), the low-voltage storage battery cathode (10) is connected with the vehicle body framework (51) through the mechanical main power switch (8), the small charger (5) cathode output (6) is connected with the vehicle body framework (51), and the whole vehicle controller (7) is in communication connection with the small charger (5);
the mechanical main power switch (8) is provided with a position sensor (9), and the position sensor (9) is in communication connection with the whole vehicle controller (7);
the control method of the system specifically comprises the following steps:
step one: the mechanical type main power switch (8) controls the power supply of the whole vehicle by controlling the on-off of the cathode (10) of the low-voltage storage battery and the vehicle body framework (51), and a position sensor (9) is arranged on the mechanical type main power switch (8) to collect a feedback signal output by the position sensor (9) according to the position change of the on-off of the mechanical type main power switch (8) to the whole vehicle controller (7), and the whole vehicle controller (7) judges whether the mechanical type main power switch (8) is in a closed state or not through the feedback signal;
step two: if the whole vehicle controller (7) judges that the mechanical main power switch (8) is in a closed state, an enabling signal of the small charger (5) is output, the small charger (5) works, and if the whole vehicle controller (7) judges that the mechanical main power switch (8) is in an open state, the enabling signal of the small charger (5) is stopped to be output, and the small charger (5) stops working.
2. The control system for preventing and controlling the failure of the negative mechanical type main power switch for the electric passenger car according to claim 1, wherein the whole car controller (7) is connected with the small charger (5) through an external CAN (controller area network) line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542944.6A CN109435877B (en) | 2018-12-17 | 2018-12-17 | Control system for preventing and controlling failure of negative mechanical type main power switch for electric passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542944.6A CN109435877B (en) | 2018-12-17 | 2018-12-17 | Control system for preventing and controlling failure of negative mechanical type main power switch for electric passenger car |
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| Publication Number | Publication Date |
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| CN109435877A CN109435877A (en) | 2019-03-08 |
| CN109435877B true CN109435877B (en) | 2023-12-15 |
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| CN201811542944.6A Active CN109435877B (en) | 2018-12-17 | 2018-12-17 | Control system for preventing and controlling failure of negative mechanical type main power switch for electric passenger car |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112693361B (en) * | 2020-12-28 | 2022-10-28 | 潍柴动力股份有限公司 | Battery protection system and method |
| CN113682251A (en) * | 2021-08-11 | 2021-11-23 | 江铃汽车股份有限公司 | Device and method for managing electric quantity of whole vehicle |
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| CN102299533A (en) * | 2011-06-09 | 2011-12-28 | 上海华普汽车有限公司 | Plug-in Hybrid Electric Vehicle (PHEV) battery management system and control identification method thereof |
| CN106314179A (en) * | 2016-08-31 | 2017-01-11 | 安徽安凯汽车股份有限公司 | Electric power management system for low tension battery of electric car |
| CN206685959U (en) * | 2017-04-13 | 2017-11-28 | 安徽华菱汽车有限公司 | A kind of vehicle and its power supply emergency cut-off protects system |
| CN209225091U (en) * | 2018-12-17 | 2019-08-09 | 安徽安凯汽车股份有限公司 | A kind of electric motor coach bears the control system of mechanical total power switch failure with prevention and control |
-
2018
- 2018-12-17 CN CN201811542944.6A patent/CN109435877B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656425U (en) * | 2010-04-16 | 2010-11-24 | 徐州徐工挖掘机械有限公司 | Controlling device for inhibiting engineering mechanical surge voltage |
| CN102299533A (en) * | 2011-06-09 | 2011-12-28 | 上海华普汽车有限公司 | Plug-in Hybrid Electric Vehicle (PHEV) battery management system and control identification method thereof |
| CN106314179A (en) * | 2016-08-31 | 2017-01-11 | 安徽安凯汽车股份有限公司 | Electric power management system for low tension battery of electric car |
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| CN209225091U (en) * | 2018-12-17 | 2019-08-09 | 安徽安凯汽车股份有限公司 | A kind of electric motor coach bears the control system of mechanical total power switch failure with prevention and control |
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