CN112644445A - Electronic parking braking system based on EHB and ESC double-circuit control - Google Patents
Electronic parking braking system based on EHB and ESC double-circuit control Download PDFInfo
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- CN112644445A CN112644445A CN202011502004.1A CN202011502004A CN112644445A CN 112644445 A CN112644445 A CN 112644445A CN 202011502004 A CN202011502004 A CN 202011502004A CN 112644445 A CN112644445 A CN 112644445A
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- 230000005540 biological transmission Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
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Abstract
The invention discloses an electronic parking braking system based on EHB and ESC double-path control, which comprises an ESC and an EHB, wherein both the ESC and the EHB can control the electronic parking braking system; when the ESC controls the electronic parking brake system to fail, the EHB takes over a motor of the electronic parking brake system, judges the intention of a driver by judging signals of gears, ignition, an accelerator, a vehicle speed and a wheel speed, and realizes the parking or driving-off function. The EHB and the ESC are mutually backup, and can directly control calipers to realize parking in a failure mode. And the P gear and gearbox P gear mechanical locking structure can be cancelled, and the cost is reduced.
Description
Technical Field
The invention relates to an electronic parking brake system of an electric automobile, in particular to an electronic parking brake system based on EHB and ESC double-path control.
Background
An automobile equipped with an electronic hand brake system (EPB) is specified in GB21670 that, when the electronic hand brake controller fails internally, the entire automobile still performs the functions of parking, parking and starting to drive away. 4.2.19 in GB21670 has a particular requirement for a parking brake system equipped with an electronic control transmission, which should be prevented from being actuated against the driver's intention in the event of failure of the electronic control transmission. When the electric control transmission internal circuit, the electric control unit external circuit except the power supply circuit is damaged or the control device fails, the parking brake can still be carried out from the driving position, and the fully loaded vehicle can still be kept still on 8 percent of the uphill slope and the downhill slope. If the performance can be achieved, and the parking brake is not influenced by the ignition switch once being applied and is always kept in a working state, the parking brake is allowed to be automatically carried out under the static state of the vehicle; when the driver restarts the vehicle, the parking brake should be automatically released immediately. It is possible to achieve the above-mentioned properties with the aid of an engine/manual transmission or an automatic transmission, if necessary, also with the aid of vehicle-mounted tools and auxiliary devices for releasing the parking brake.
In order to meet the law in the design of a common vehicle type, a P gear mechanical locking mechanism of a P gear and a gearbox needs to be added to the whole vehicle, and the cost is high. In the EP30 network car reservation, after the P-gear and P-gear parking motor are cancelled, the existing EPBi, i.e. the integrated electronic parking brake system, cannot meet the special requirement of the two-way backup parking of the parking brake system in GB21670 4.2.19.
Disclosure of Invention
The invention aims to provide an electronic parking braking system based on EHB and ESC double-path control, which can enable ESC and EHB to be mutually backed up and can realize parking and driving-off functions under a failure mode.
In order to solve the technical problem, the invention aims to realize that:
the invention relates to an electronic parking brake system based on EHB and ESC double-path control, which comprises an ESC and an EHB, wherein both the ESC and the EHB can control the electronic parking brake system; when the ESC controls the electronic parking brake system to fail, the EHB takes over a motor of the electronic parking brake system, judges the intention of a driver by judging signals of gears, ignition, an accelerator, a vehicle speed and a wheel speed, and realizes the parking or driving-off function.
On the basis of the above scheme and as a preferable scheme of the scheme: the electronic parking brake system is an integrated electronic parking brake system.
On the basis of the above scheme and as a preferable scheme of the scheme: the electronic parking braking system is suitable for an electric automobile with a P gear cancelled and a P gear mechanical locking.
On the basis of the above scheme and as a preferable scheme of the scheme: the EHB can control the motor of the electronic parking braking system to perform flameout automatic parking and starting automatic release.
On the basis of the above scheme and as a preferable scheme of the scheme: the electronic parking brake system is of a caliper type.
The invention has the beneficial effects that: the EHB and the ESC are mutually backup, and can directly control calipers to realize parking in a failure mode. And the P gear and gearbox P gear mechanical locking structure can be cancelled, and the cost is reduced.
Drawings
Fig. 1 is a control schematic diagram of an electronic parking brake system according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Herein, the term "EPB" is a short term for an electronic parking Brake system (Electrical Park Brake), and an electronic button is used instead of a conventional lever hand Brake. Compare in traditional parking braking system, EPB possesses following advantage: the parking assisting device can realize the functions of automatic parking, automatic release, emergency braking assistance, hill starting assistance and the like, and improves the comfort and convenience of parking and the safety when the vehicle fails.
In this context, the term "ESC" is a short term for Electronic stability control (Electronic safety controller) of a vehicle body, and is an active safety technology for assisting a driver in controlling a vehicle, and is also a further extension of the functions of an anti-lock braking system (ABS) and a Traction Control System (TCS) of a vehicle.
In this context, the term "EPBi" is an integrated electronic parking brake system that is integrated with a body electronic stability control system (ESC), thereby eliminating the need for a separate ECU. The EPBi can be divided into an integrated caliper type and an integrated drum type according to the form of the rear brake.
Herein, the term "ECU" is an abbreviation of Electronic Control Unit (Electronic Control Unit).
In this document, the term "EHB" is a short term for Electro-hydraulic Brake System (Electro-hydraulic Brake System), which is a Brake System combining electronic control technology and a hydraulic control System. The EHB has the advantages of high modular degree, simple and compact structure, capability of integrating other automobile auxiliary functions such as ABS, ESC and the like, particular suitability for new energy automobiles with regenerative braking function, capability of realizing the maximization of the recovery of braking energy and the like.
The invention relates to an electronic parking brake system based on EHB and ESC double-path control, which comprises an ESC and an EHB, wherein both the ESC and the EHB can control the electronic parking brake system; when the ESC controls the electronic parking brake system to fail, the EHB takes over a motor of the electronic parking brake system, judges the intention of a driver by judging signals of gears, ignition, an accelerator, a vehicle speed and a wheel speed, and realizes the parking or driving-off function.
Fig. 1 shows a control principle of an electronic parking brake system according to the present invention. In the present embodiment, the electronic parking brake system is an integrated electronic parking brake system, i.e., EPBi. When the EPBi works normally, the EPB motor can be controlled in a full-functional mode, and the parking or driving-away function is achieved. The EPBi is integrated with the body electronic stability control system (ESC), eliminating the need for a separate ECU. When the ESC fails, namely the EPBi degradation signal shown in FIG. 1, the EHB takes over the EPB motor, and judges the intention of the driver by judging signals of gear, ignition, accelerator, vehicle speed and wheel speed, thereby realizing the parking or driving-off function. The EHB can control the motor of the electronic parking braking system to perform flameout automatic parking, starting automatic release and P-gear automatic parking.
The electronic parking brake system is suitable for the electric automobile which cancels P gear and P gear mechanical locking. After a P-gear and gearbox P-gear mechanical locking structure is eliminated in an EP30 network car reservation, the equipped integrated electronic parking brake system cannot meet the special requirement of double-path backup parking of a parking brake system in GB21970 4.2.19.
In the present embodiment, the integrated electronic parking brake system is of a caliper type. ESC and EHB are each other for the backup function, and direct control electron parking braking system's calliper realizes the parking under the failure mode, and the effect is better. The special requirement of double-path backup parking for a parking braking system in 4.2.19 in GB21970 is met, and after the controller in the vehicle body electronic stability control system and the integrated electronic parking braking system fails, the electronic hydraulic control system can still take over the EPB motor to realize the functions of parking and starting to drive away. And because P keeps off and gearbox P keeps off mechanical locking structure, more can reduce cost.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The electronic parking brake system based on EHB and ESC double-path control is characterized by comprising an ESC and an EHB, wherein both the ESC and the EHB can control the electronic parking brake system; when the ESC controls the electronic parking brake system to fail, the EHB takes over a motor of the electronic parking brake system, judges the intention of a driver by judging signals of gears, ignition, an accelerator, a vehicle speed and a wheel speed, and realizes the parking or driving-off function.
2. The EHB and ESC dual-control-based electronic parking brake system of claim 1, wherein the electronic parking brake system is an integrated electronic parking brake system.
3. The EHB and ESC two-way control-based electronic parking brake system of claim 1, wherein the electronic parking brake system is adapted to an electric vehicle that cancels P-range and P-range mechanical lock.
4. The EHB and ESC dual-control-based electronic parking brake system of claim 1, wherein the EHB can control an electric motor of the electronic parking brake system to perform flameout automatic parking and start automatic release.
5. The EHB and ESC dual-control-based electronic parking brake system of claim 1, wherein the electronic parking brake system is caliper-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011502004.1A CN112644445A (en) | 2020-12-18 | 2020-12-18 | Electronic parking braking system based on EHB and ESC double-circuit control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011502004.1A CN112644445A (en) | 2020-12-18 | 2020-12-18 | Electronic parking braking system based on EHB and ESC double-circuit control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112644445A true CN112644445A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011502004.1A Pending CN112644445A (en) | 2020-12-18 | 2020-12-18 | Electronic parking braking system based on EHB and ESC double-circuit control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264026A (en) * | 2021-06-15 | 2021-08-17 | 东风汽车集团股份有限公司 | New energy automobile electron parking control system |
| CN114291054A (en) * | 2021-12-31 | 2022-04-08 | 广西汽车集团有限公司 | Service brake joint control system, service brake control method and vehicle |
| CN115848328A (en) * | 2021-09-24 | 2023-03-28 | 重庆长安汽车股份有限公司 | Parking control system and method and vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177643A (en) * | 2017-11-20 | 2018-06-19 | 浙江亚太机电股份有限公司 | A kind of parking electric automobile control system with failure backup functionality |
| US20190176789A1 (en) * | 2017-12-12 | 2019-06-13 | Robert Bosch Gmbh | Method and Device for a Highly Available Automatic Parking Brake |
| CN110435626A (en) * | 2019-08-23 | 2019-11-12 | 格陆博科技有限公司 | A kind of Standby control system |
| CN110641432A (en) * | 2019-10-31 | 2020-01-03 | 东风汽车股份有限公司 | Combined brake control method based on brake-by-wire and electronic parking brake |
| CN111348027A (en) * | 2020-03-27 | 2020-06-30 | 宁波吉利汽车研究开发有限公司 | Electronic parking control system and control method |
| CN111746483A (en) * | 2019-03-27 | 2020-10-09 | 罗伯特·博世有限公司 | Parking brake backup unit, vehicle and parking brake method |
-
2020
- 2020-12-18 CN CN202011502004.1A patent/CN112644445A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177643A (en) * | 2017-11-20 | 2018-06-19 | 浙江亚太机电股份有限公司 | A kind of parking electric automobile control system with failure backup functionality |
| US20190176789A1 (en) * | 2017-12-12 | 2019-06-13 | Robert Bosch Gmbh | Method and Device for a Highly Available Automatic Parking Brake |
| CN111746483A (en) * | 2019-03-27 | 2020-10-09 | 罗伯特·博世有限公司 | Parking brake backup unit, vehicle and parking brake method |
| CN110435626A (en) * | 2019-08-23 | 2019-11-12 | 格陆博科技有限公司 | A kind of Standby control system |
| CN110641432A (en) * | 2019-10-31 | 2020-01-03 | 东风汽车股份有限公司 | Combined brake control method based on brake-by-wire and electronic parking brake |
| CN111348027A (en) * | 2020-03-27 | 2020-06-30 | 宁波吉利汽车研究开发有限公司 | Electronic parking control system and control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264026A (en) * | 2021-06-15 | 2021-08-17 | 东风汽车集团股份有限公司 | New energy automobile electron parking control system |
| CN115848328A (en) * | 2021-09-24 | 2023-03-28 | 重庆长安汽车股份有限公司 | Parking control system and method and vehicle |
| CN115848328B (en) * | 2021-09-24 | 2024-04-19 | 重庆长安汽车股份有限公司 | Parking control system and method and vehicle |
| CN114291054A (en) * | 2021-12-31 | 2022-04-08 | 广西汽车集团有限公司 | Service brake joint control system, service brake control method and vehicle |
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