CN210116501U - Electronic parking system of electrically driven commercial vehicle - Google Patents
Electronic parking system of electrically driven commercial vehicle Download PDFInfo
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- CN210116501U CN210116501U CN201920627577.3U CN201920627577U CN210116501U CN 210116501 U CN210116501 U CN 210116501U CN 201920627577 U CN201920627577 U CN 201920627577U CN 210116501 U CN210116501 U CN 210116501U
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Abstract
The utility model discloses an electrically driven commercial car electronic parking system, main control EPB _ ECU module and vice EPB _ ECU module adopt independent power cord and fuse to be connected with the battery, the EPB switch inserts main control EPB _ ECU module completely, carry out on-off state judgement and diagnosis by main control EPB _ ECU, the EPB switch part inserts vice EPB _ ECU module, only judge basically to pull up and release signal; the master control EPB _ ECU module and the auxiliary EPB _ ECU module are both connected to a finished automobile CAN network and receive signals on the CAN network; the master control EPB _ ECU module and the auxiliary EPB _ ECU module are communicated through CAN2, and a power driving module in the master control EPB _ ECU module drives a front wheel caliper executing mechanism; a power driving module in the auxiliary EPB _ ECU module drives a rear wheel caliper executing mechanism, and the tilt angle sensor is integrated in the main control EPB _ ECU module. The utility model has the advantages that: the fully electronic parking mode driven by the motor is provided, and a plurality of configuration schemes are designed according to specific conditions such as clamping force requirements, the number of wheels and the like. Meanwhile, advanced control modes such as intelligent automatic clamping, automatic releasing, self-adaptive clamping force, friction plate gap self-adjusting control and the like are introduced.
Description
Technical Field
The utility model relates to an electron parking braking system mainly is an electrically driven commercial car electron parking system.
Background
Since commercial vehicles have a large volume and weight and need to provide a significantly greater parking force than passenger vehicles when parking, pneumatic or manual cable-type parking brakes are mainly used. The electronic parking mode widely used on passenger vehicles at present cannot be used on commercial vehicles. However, under the current requirements of light weight, electronization, automation and low cost of the commercial vehicle market, a lot of whole car factories have strong demands for using electronic parking. Some suppliers adopt a 'partial electronic parking brake' system which uses an EPB electronic switch to replace a traditional parking hand valve and uses a controller to control a solenoid valve to regulate air pressure so as to provide a parking function, but the pneumatic parking mode of a commercial vehicle is not fundamentally changed.
The pneumatic parking braking system consists of an air compressor, an air storage tank, an air pressure sensor, various electromagnetic valves, a parking braking air chamber, a controller and the like, has a complex structure, a large volume and high cost, is not easy to maintain when in failure, requires long time for the establishment and the withdrawal of braking pressure, and has slow response. The manual cable parking also has the defects of large volume, high cost, incapability of providing self-adaptive parking force, incapability of realizing dynamic parking and automatic clamping/releasing functions and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide an electrically driven commercial car electron parking system, realize the application of the electron parking braking system of the complete electronic control on the commercial car.
The purpose of the utility model is accomplished through following technical scheme. An electronic parking system of an electrically driven commercial vehicle comprises a main control EPB _ ECU module, a secondary EPB _ ECU module, an EPB switch and a caliper executing mechanism, wherein the main control EPB _ ECU module and the secondary EPB _ ECU module comprise a voltage module, a signal processing module, a power driving module, a CAN module and an MCU module, the main control EPB _ ECU module further comprises an inclination angle sensor, the caliper executing mechanism is divided into a left front wheel caliper executing mechanism, a left rear wheel caliper executing mechanism, a right front wheel caliper executing mechanism and a right rear wheel caliper executing mechanism, and each path CAN be independently controlled; the master control EPB _ ECU module and the auxiliary EPB _ ECU module are connected with the storage battery by adopting independent power lines and fuses, the EPB switch is completely connected with the master control EPB _ ECU module, the master control EPB _ ECU module is used for judging and diagnosing the switch state, and the EPB switch is partially connected with the auxiliary EPB _ ECU module and only judges basic pull-up and release signals; the master control EPB _ ECU module and the auxiliary EPB _ ECU module are both connected to a finished automobile CAN network and receive signals on the CAN network; the master control EPB _ ECU module and the auxiliary EPB _ ECU module are communicated through CAN2, and a power driving module in the master control EPB _ ECU module drives a front wheel caliper executing mechanism; a power driving module in the auxiliary EPB _ ECU module drives a rear wheel caliper executing mechanism, and the tilt angle sensor is integrated in the main control EPB _ ECU module;
after the EPB switch is pulled up, the main control EPB _ ECU module calculates the required parking force according to the tilt angle sensor signal, informs the auxiliary EPB _ ECU module through a CAN2 signal, and executes the pulling-up operation; the main control EPB _ ECU module and the auxiliary EPB _ ECU module independently judge the parking current of corresponding actuating mechanisms in the pulling process, and control the power driving module to achieve the target parking force;
after the EPB switch is pressed down, the master EPB _ ECU module informs the slave EPB _ ECU module through CAN2, and the master EPB _ ECU module and the slave EPB _ ECU module control the power driving module to execute a releasing action;
when a power supply line is blown due to the fault of the auxiliary EPB _ ECU module, the auxiliary EPB _ ECU module loses control capability, the main control EPB _ ECU module sends fault information through the CAN1 and drives a fault indicator lamp to light up, and at the moment, the main control EPB _ ECU module keeps normal work;
when the master EPB _ ECU module is in fault to cause the blowing of a power supply line, the master EPB _ ECU module loses the control capability, the auxiliary EPB _ ECU module sends fault information through the CAN1, and at the moment, the auxiliary EPB _ ECU module performs pulling-up and releasing actions according to input signals of the degradation switch.
The secondary EPB _ ECU module comprises a tilt sensor.
The system automatically clamps and releases according to CAN instructions or external signals of stepping on an accelerator and switching off a fire.
The utility model has the advantages that: the utility model discloses a solve commercial car to the demand of big parking power, provide a complete electronization through motor drive's parking mode. And several configuration schemes are designed according to specific conditions such as clamping force requirements, the number of wheels and the like. Meanwhile, advanced control modes such as intelligent automatic clamping, automatic releasing, self-adaptive clamping force, friction plate gap self-adjusting control and the like are introduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of a 4-wheel fully assembled;
FIG. 3 is a schematic view of a 4-wheel assembly;
FIG. 4 is a 6-wheel fully assembled schematic;
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
as shown in fig. 1, the system comprises a master control EPB _ ECU module, a sub EPB _ ECU module, an EPB switch, and a caliper actuator, wherein the master control EPB _ ECU module and the sub EPB _ ECU module comprise a voltage module, a signal processing module, a power driving module, a CAN module, and an MCU module, wherein the master control EPB _ ECU module further comprises a tilt sensor, and the caliper actuator is divided into a left front wheel, a left rear wheel, a right front wheel, and a right rear wheel caliper actuator, each of which CAN be independently controlled.
The whole system works as follows: (1) the master EPB _ ECU and the slave EPB _ ECU are connected with the storage battery by adopting independent power lines and fuses (2), the EPB switch is completely connected with the master EPB _ ECU, the master EPB _ ECU judges the switch state and diagnoses (3), the EPB switch is partially connected with the slave EPB _ ECU, only basic pull-up and release signals are judged (4), the master EPB _ ECU and the slave EPB _ ECU are both connected with a whole CAN network, signals on the CAN network are received (5), the master EPB _ ECU and the slave EPB _ ECU are communicated through CAN2 (6), a master EPB _ ECU power driving module drives a front wheel caliper executing mechanism, at most 4 paths of motor control outputs CAN be supported (7), the slave EPB _ ECU power driving module drives a rear wheel caliper executing mechanism, at most 4 paths of motor control outputs CAN be supported (8), an inclination angle sensor is integrated in the master EPB _ ECU, the slave EPB _ ECU CAN be selected as an item (9), and the master EPB _ ECU is pulled up according to inclination angle sensor signals, the method comprises the steps of calculating required parking force, informing a secondary EPB _ ECU through a CAN2 signal, independently judging parking currents of corresponding execution mechanisms by the primary EPB _ ECU and the secondary EPB _ ECU in a pulling process of a pulling operation (10), controlling a power driving module to achieve a target parking force (11), and after an EPB switch is pressed down, informing the secondary EPB _ ECU through a CAN2 by the primary EPB _ ECU, controlling the power driving module to execute a releasing action (12) by the two ECUs, and when all 8 paths of power driving modules are completely independent, a single-path or multi-path fault does not influence other paths of work (13) and the secondary EPB _ ECU fault causes a power supply line to be blown, the secondary EPB _ ECU loses control capability. The master control EPB _ ECU sends fault information through the CAN1 and drives a fault indicator lamp to light up, and the master control EPB _ ECU keeps working normally. (14) When the master control EPB _ ECU is in failure, the master control EPB _ ECU loses control capability. The slave EPB _ ECU transmits the failure information through the CAN1, and at this time, the slave EPB _ ECU performs pull-up and release operations according to the degradation switch input signal. (15) The system CAN automatically clamp and release according to CAN instructions or external signals such as stepping on an accelerator, a breakpoint switch and the like. (16) The system can control the motor to carry out self-learning and carry out self-adaptation on the abrasion condition of the brake pad.
The system can simultaneously drive 8 paths of motors at most, and can selectively realize the assembly of all or part of the motors through the configuration of software and hardware according to the weight of a vehicle and the number of wheels. Support for several configuration layouts has been done so far:
(1) the 4-wheel complete configuration is suitable for commercial vehicles with 4 wheels and heavy weight. 1 right front wheel actuating mechanism, 2 left front wheel actuating mechanism, 3 main control ECU, 4EPB switch, 5 vice ECUs, 6 right rear wheel actuating mechanism, 7 left rear wheel actuating mechanism.
(2) The 4-wheel part is configured and is suitable for commercial vehicles with 4 wheels and heavy vehicles. 1 right front wheel actuating mechanism, 2 left front wheel actuating mechanism, 3 main control ECU, 4EPB switch, 5 vice ECUs, 6 right rear wheel actuating mechanism, 7 left rear wheel actuating mechanism.
(3) The 6 wheels are completely configured, and the vehicle is suitable for commercial vehicles with 6 wheels and heavy vehicles. The system comprises a right front wheel executing mechanism 1, a left front wheel executing mechanism 2, a main control ECU 3, a 4EPB switch, a sub-ECU 5, a right rear wheel executing mechanism I6, a left rear wheel executing mechanism I7, a right rear wheel executing mechanism II 8 and a left rear wheel executing mechanism II 9.
The utility model discloses well parking system adopts the electric control completely, has broken away from traditional commercial car pneumatic control or hand-pulling type parking mechanism's various shortcomings. The automatic clamping/releasing function can be realized, the required clamping force can be calculated in a self-adaptive mode as required, and intelligent control is realized.
The utility model discloses the reliability is high, and main and auxiliary EPB _ ECU supplies power alone, does not influence another ECU work when one of them loses the driving force. Meanwhile, other control channels are not influenced when a single path or a plurality of paths of faults occur.
The utility model discloses 8 way motor drives of maximum output can dispose in a flexible way, are applicable to the application scenario of different car weights and different wheel quantity.
The utility model discloses system simple structure, the framework of ECU + executor (motor) is with low costs, small, the wiring is simple, easily maintenance.
Abbreviations and Key term definitions
EPB-Electrical Park Brake electronic parking Brake
CAN-Controller Area Network
ECU-Electronic Control Unit
MCU-Microcontroller Unit micro-control Unit
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (3)
1. The utility model provides an electrically driven commercial car electron parking system which characterized in that: the system comprises a main control EPB _ ECU module, a sub-EPB _ ECU module, an EPB switch and a caliper executing mechanism, wherein the main control EPB _ ECU module and the sub-EPB _ ECU module comprise a voltage module, a signal processing module, a power driving module, a CAN module and an MCU module, the main control EPB _ ECU module further comprises an inclination angle sensor, the caliper executing mechanism is divided into a left front wheel caliper executing mechanism, a left rear wheel caliper executing mechanism, a right rear wheel caliper executing mechanism and a right rear wheel caliper executing mechanism, and each path CAN be independently controlled; the master control EPB _ ECU module and the auxiliary EPB _ ECU module are connected with the storage battery by adopting independent power lines and fuses, the EPB switch is completely connected with the master control EPB _ ECU module, the master control EPB _ ECU module is used for judging and diagnosing the switch state, and the EPB switch is partially connected with the auxiliary EPB _ ECU module and only judges basic pull-up and release signals; the master control EPB _ ECU module and the auxiliary EPB _ ECU module are both connected to a finished automobile CAN network and receive signals on the CAN network; the master control EPB _ ECU module and the auxiliary EPB _ ECU module are communicated through CAN2, and a power driving module in the master control EPB _ ECU module drives a front wheel caliper executing mechanism; a power driving module in the auxiliary EPB _ ECU module drives a rear wheel caliper executing mechanism, and the tilt angle sensor is integrated in the main control EPB _ ECU module;
after the EPB switch is pulled up, the main control EPB _ ECU module calculates the required parking force according to the tilt angle sensor signal, informs the auxiliary EPB _ ECU module through a CAN2 signal, and executes the pulling-up operation; the main control EPB _ ECU module and the auxiliary EPB _ ECU module independently judge the parking current of corresponding actuating mechanisms in the pulling process, and control the power driving module to achieve the target parking force;
after the EPB switch is pressed down, the master EPB _ ECU module informs the slave EPB _ ECU module through CAN2, and the master EPB _ ECU module and the slave EPB _ ECU module control the power driving module to execute a releasing action;
when a power supply line is blown due to the fault of the auxiliary EPB _ ECU module, the auxiliary EPB _ ECU module loses control capability, the main control EPB _ ECU module sends fault information through the CAN1 and drives a fault indicator lamp to light up, and at the moment, the main control EPB _ ECU module keeps normal work;
when the master EPB _ ECU module is in fault to cause the blowing of a power supply line, the master EPB _ ECU module loses the control capability, the auxiliary EPB _ ECU module sends fault information through the CAN1, and at the moment, the auxiliary EPB _ ECU module performs pulling-up and releasing actions according to input signals of the degradation switch.
2. The electric powered commercial vehicle electronic parking system of claim 1, wherein: the secondary EPB _ ECU module comprises a tilt sensor.
3. The electric powered commercial vehicle electronic parking system of claim 1, wherein: the system automatically clamps and releases according to CAN instructions or external signals of stepping on an accelerator and switching off a fire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920627577.3U CN210116501U (en) | 2019-05-05 | 2019-05-05 | Electronic parking system of electrically driven commercial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920627577.3U CN210116501U (en) | 2019-05-05 | 2019-05-05 | Electronic parking system of electrically driven commercial vehicle |
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| CN210116501U true CN210116501U (en) | 2020-02-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203189A (en) * | 2019-05-05 | 2019-09-06 | 万向钱潮股份有限公司 | A kind of electrically driven (operated) commercial vehicle electronic parking system |
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- 2019-05-05 CN CN201920627577.3U patent/CN210116501U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203189A (en) * | 2019-05-05 | 2019-09-06 | 万向钱潮股份有限公司 | A kind of electrically driven (operated) commercial vehicle electronic parking system |
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Address after: 311215 Wanxiang Road, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Wanxiang Qianchao Co.,Ltd. Patentee after: WANXIANG GROUP Co.,Ltd. Address before: No.1 Wanxiang Road, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: WANXIANG QIANCHAO Co.,Ltd. Patentee before: WANXIANG GROUP Co.,Ltd. |
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