CN108891402A - Parking ensuring equipment after automobile-used EPB failure - Google Patents
Parking ensuring equipment after automobile-used EPB failure Download PDFInfo
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- CN108891402A CN108891402A CN201810613607.5A CN201810613607A CN108891402A CN 108891402 A CN108891402 A CN 108891402A CN 201810613607 A CN201810613607 A CN 201810613607A CN 108891402 A CN108891402 A CN 108891402A
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- 238000004146 energy storage Methods 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction 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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/12—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 fluid assistance, drive, or release the fluid being liquid
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
本发明提供的一种车用EPB失效后驻车保障装置，包括:蓄能装置，用于储蓄并调节制动力的大小；第二制动管路，所述第二制动管路一端连接蓄能装置，另一端连接卡钳。本发明在传统EPB系统的基础上增加第二制动管路及蓄能装置，可以保证在电力失效的情况下，实现驻车。
The invention provides a vehicle EPB parking protection device after failure, comprising: an energy storage device for storing and adjusting the size of the braking force; a second brake pipeline, one end of which is connected to the storage battery function device, and the other end is connected to the caliper. The present invention adds a second brake pipeline and an energy storage device on the basis of the traditional EPB system, which can ensure that parking is realized in the case of power failure.
Description
技术领域technical field
本发明涉及新能源汽车零配件领域，具体涉及一种车用EPB失效后驻车保障装置。The invention relates to the field of spare parts of new energy automobiles, in particular to a parking protection device for vehicles after EPB failure.
背景技术Background technique
电子驻车EPB（Electrical Parking Brake），是指由电子控制方式实现停车制动的技术。电子手刹是由电子控制方式实现停车制动的技术。Electronic Parking EPB (Electrical Parking Brake) refers to the technology that realizes parking brake by electronic control. Electronic handbrake is a technology that realizes parking brake by electronic control.
电子驻车制动系统(EPB: Electrical Park Brake)是指将行车过程中的临时性制动和停车后的长时性制动功能整合在一起，并且由电子控制方式实现停车制动的技术。Electronic Parking Brake (EPB: Electrical Park Brake) refers to a technology that integrates temporary braking during driving and long-term braking after parking, and realizes parking braking by electronic control.
电子手刹是由电子控制方式实现停车制动的技术。其工作原理与机械式手刹相同，均是通过拉索拉紧后轮刹车蹄进行制动。另一种则是使用电子机械卡钳，是通过电机卡紧刹车片产生来达到控制停车制动，从电子手刹从基本的驻车功能延伸到自动驻车功能AUTO HOLD。AUTO HOLD自动驻车功能技术的运用，使得驾驶者在车辆停下时不需要长时间刹车。以及启动自动电子驻车制动的情况下，能够避免车辆不必要的滑行。Electronic handbrake is a technology that realizes parking brake by electronic control. Its working principle is the same as that of the mechanical hand brake, both of which use the cable to tighten the brake shoe of the rear wheel for braking. The other is to use electromechanical calipers, which control the parking brake through the motor clamping the brake pads, extending from the basic parking function of the electronic handbrake to the automatic parking function AUTO HOLD. The application of AUTO HOLD automatic parking function technology makes the driver not need to brake for a long time when the vehicle stops. And when the automatic electronic parking brake is activated, unnecessary sliding of the vehicle can be avoided.
现有的用于新能源汽车的EPB，通过EPB ECU控制EPB执行单元，实现驻车，但无论是EPB ECU，还是靠电机驱动的执行单元，都需电力作为基础，否则不能正常工作。现有的EPB（电子驻车）在整车电力失效（包含整车高压电池及蓄电池）或EPB ECU及相关元件出现故障报错时，不能再坡道上实现驻车，无法保证驾驶员安全。The existing EPB used for new energy vehicles controls the EPB execution unit through the EPB ECU to realize parking, but whether it is the EPB ECU or the execution unit driven by a motor, it needs electric power as the basis, otherwise it cannot work normally. The existing EPB (Electronic Parking) cannot park on slopes when the vehicle's power fails (including the vehicle's high-voltage battery and storage battery) or the EPB ECU and related components fail and report an error, which cannot guarantee driver safety.
发明内容Contents of the invention
（一）要解决的技术问题(1) Technical problems to be solved
本发明的目的是提供一种车用EPB失效后驻车保障装置，解决了现有的EPB（电子驻车）在整车电力失效（包含整车高压电池及蓄电池）或EPB ECU及相关元件出现故障报错时，不能再坡道上实现驻车，无法保证驾驶员安全。The purpose of the present invention is to provide a parking guarantee device after the EPB failure of the vehicle, which solves the problem of the existing EPB (electronic parking) when the vehicle power fails (including the vehicle high-voltage battery and storage battery) or the EPB ECU and related components appear. When a fault is reported, the car cannot be parked on a ramp, and the safety of the driver cannot be guaranteed.
（二）技术方案(2) Technical solutions
为了解决上述技术问题，本发明提供的一种车用EPB失效后驻车保障装置，包括: 蓄能装置，用于储蓄并调节制动力的大小；第二制动管路，所述第二制动管路一端连接蓄能装置，另一端连接卡钳。In order to solve the above technical problems, the invention provides a vehicle EPB parking protection device after failure, including: an energy storage device for storing and adjusting the size of the braking force; One end of the dynamic pipeline is connected to the energy storage device, and the other end is connected to the caliper.
本发明在传统EPB系统的基础上增加第二制动管路及蓄能装置，可以保证在电力失效的情况下，实现驻车。The present invention adds a second brake pipeline and an energy storage device on the basis of the traditional EPB system, which can ensure that parking is realized in the case of power failure.
优选的，所述车用EPB失效后驻车保障装置还包括第一制动管路和制动装置，所述制动装置用于提供制动力；所述第一制动管路一端连接制动装置，另一端连通蓄能装置；第一制动管路中部还侧通卡钳，用于输送制动力给卡钳。本发明设置第一制动管路和制动装置，形成回流，便于调节制动力大小。Preferably, the vehicle parking protection device after EPB failure also includes a first brake pipeline and a brake device, the brake device is used to provide braking force; one end of the first brake pipeline is connected to the brake device, and the other end is connected to the energy storage device; the middle part of the first brake pipeline is also connected to the caliper on the side, which is used to transmit the braking force to the caliper. The invention arranges the first braking pipeline and the braking device to form a return flow, which is convenient for adjusting the magnitude of the braking force.
优选的，所述第一制动管路上装有第一电磁阀，所述第一电磁阀被配置成通电时为打开状态，断电时为关闭状态。Preferably, a first solenoid valve is installed on the first brake pipeline, and the first solenoid valve is configured to be in an open state when energized, and to be in a closed state when deenergized.
优选的，所述第二制动管路上装有第二电磁阀，所述第二电磁阀被配置成通电时为关闭状态，断电时为打开状态。本发明中的第一电磁阀被配置成通电时为打开状态，断电时为关闭状态，以及第二电磁阀配置成被配置成通电时为关闭状态，断电时为打开状态，其可通过车载VCU来调节车用EPB失效后驻车保障装置的启动或关闭。Preferably, a second solenoid valve is installed on the second brake pipeline, and the second solenoid valve is configured to be in a closed state when powered on, and to be in an open state when powered off. The first solenoid valve in the present invention is configured to be in an open state when energized, and to be in a closed state when de-energized, and the second solenoid valve is configured to be configured to be in a closed state when energized, and to be in an open state when de-energized, which can be passed through The vehicle-mounted VCU is used to adjust the activation or deactivation of the parking protection device after the vehicle EPB fails.
优选的，所述第一电磁阀和第二电磁阀通过电线连通整车VCU。Preferably, the first solenoid valve and the second solenoid valve are connected to the vehicle VCU through wires.
优选的，所述蓄能装置包括壳体，所述壳体内设有活塞和弹性元件，所述弹性元件一端连接活塞，另一端连接壳体底端。Preferably, the energy storage device includes a casing, a piston and an elastic element are arranged in the casing, and one end of the elastic element is connected to the piston, and the other end is connected to the bottom end of the casing.
优选的，所述弹性元件为弹簧。Preferably, the elastic element is a spring.
优选的，所述活塞外侧壁上具有环形安装槽，所述环形安装槽内设有密封圈。Preferably, the outer wall of the piston has an annular installation groove, and a sealing ring is arranged in the annular installation groove.
优选的，所述制动装置包括制动主缸，所述制动主缸位于第一制动管路一端。Preferably, the brake device includes a brake master cylinder, and the brake master cylinder is located at one end of the first brake pipeline.
优选的，所述第一制动管路和第二制动管路通过卡钳进油口将制动液输入卡钳。Preferably, the first brake pipeline and the second brake pipeline input brake fluid into the caliper through the caliper oil inlet.
（三）有益效果(3) Beneficial effects
本发明提供的一种车用EPB失效后驻车保障装置，其具有以下优点：The invention provides a vehicle EPB parking protection device after failure, which has the following advantages:
1、本发明在传统EPB系统的基础上增加第二制动管路及蓄能装置，可以保证在电力失效的情况下，实现驻车。1. The present invention adds a second brake pipeline and an energy storage device on the basis of the traditional EPB system, which can ensure parking in the event of power failure.
2、本发明设置第一制动管路和制动装置，形成回流，便于调节制动力大小。2. In the present invention, the first braking pipeline and the braking device are arranged to form a backflow, which facilitates the adjustment of the braking force.
3、本发明中的第一电磁阀被配置成通电时为打开状态，断电时为关闭状态，以及第二电磁阀配置成被配置成通电时为关闭状态，断电时为打开状态，其可通过车载VCU来调节车用EPB失效后驻车保障装置的启动或关闭。3. The first electromagnetic valve in the present invention is configured to be in an open state when energized, and to be in a closed state when de-energized, and the second electromagnetic valve is configured to be configured to be in a closed state when energized, and to be in an open state when de-energized. The activation or deactivation of the parking protection device after the failure of the vehicle EPB can be adjusted through the vehicle VCU.
附图说明Description of drawings
图1是本发明的实施例1的车用EPB失效后驻车保障装置结构示意图。Fig. 1 is a schematic diagram of the structure of the parking protection device after the failure of the vehicle EPB according to Embodiment 1 of the present invention.
1、蓄能装置；2、第二制动管路；3、卡钳；4、第一制动管路；5、制动主缸；6、卡钳进油口；7、第一电磁阀；8、第二电磁阀；9、壳体；10、活塞；11、弹性元件；12、环形安装槽；13、密封圈；14、EPB。1. Energy storage device; 2. Second brake pipeline; 3. Caliper; 4. First brake pipeline; 5. Brake master cylinder; 6. Caliper oil inlet; 7. First solenoid valve; 8 , the second solenoid valve; 9, the shell; 10, the piston; 11, the elastic element; 12, the annular installation groove; 13, the sealing ring; 14, the EPB.
具体实施方式Detailed ways
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实例用于说明本发明，但不用来限制本发明的范围。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
本发明中的VCU为新能源汽车配置的、用以实现整车控制决策的核心电子控制单元。VCU通过采集油门踏板、挡位、刹车踏板等信号来判断驾驶员的驾驶意图；通过监测车辆状态(车速、温度等)信息，由VCU判断处理后，向动力系统、动力电池系统发送车辆的运行状态控制指令，同时控制车载附件电力系统的工作模式；VCU具有整车系统故障诊断保护与存储功能。The VCU in the present invention is a core electronic control unit configured for a new energy vehicle and used to realize vehicle control decision-making. The VCU judges the driver's driving intention by collecting signals such as the accelerator pedal, gear position, and brake pedal; by monitoring the vehicle status (vehicle speed, temperature, etc.), the VCU sends the vehicle's running status to the power system and power battery system State control command, while controlling the working mode of the power system of the vehicle accessories; VCU has the function of fault diagnosis protection and storage of the vehicle system.
实施例1：Example 1:
如图1所示，本发明提供的一种车用EPB失效后驻车保障装置，包括: 蓄能装置1，用于储蓄并调节制动力的大小；第二制动管路2，所述第二制动管路一端连接蓄能装置，另一端连接卡钳3。所述车用EPB失效后驻车保障装置还包括第一制动管路4和制动主缸5，所述制动主缸用于提供制动力；所述制动主缸位于第一制动管路一端。所述第一制动管路一端连接制动主缸，另一端连通蓄能装置；第一制动管路中部还侧通卡钳，用于输送制动力给卡钳。所述第一制动管路和第二制动管路通过卡钳进油口6将制动液输入卡钳。As shown in Fig. 1, a kind of vehicle EPB parking protection device provided by the present invention after failure includes: an energy storage device 1, which is used to save and adjust the size of the braking force; the second brake pipeline 2, the first One end of the second brake pipeline is connected to the energy storage device, and the other end is connected to the caliper 3 . The vehicle parking protection device after EPB failure also includes a first brake pipeline 4 and a brake master cylinder 5, the brake master cylinder is used to provide braking force; the brake master cylinder is located at the first brake end of the pipe. One end of the first brake pipeline is connected to the brake master cylinder, and the other end is connected to the energy storage device; the middle part of the first brake pipeline is also connected to the caliper on the side, which is used to transmit the braking force to the caliper. The first brake pipeline and the second brake pipeline input brake fluid into the caliper through the caliper oil inlet 6 .
所述第一制动管路上装有第一电磁阀7，所述第一电磁阀被配置成通电时为打开状态，断电时为关闭状态。A first solenoid valve 7 is installed on the first braking pipeline, and the first solenoid valve is configured to be in an open state when energized, and to be in a closed state when deenergized.
所述第二制动管路上装有第二电磁阀8，所述第二电磁阀被配置成通电时为关闭状态，断电时为打开状态。所述第一电磁阀和第二电磁阀通过电线连通整车VCU。所述蓄能装置包括壳体9，所述壳体内设有活塞10和弹性元件11，所述弹性元件一端连接活塞，另一端连接壳体底端。所述弹性元件为弹簧。所述活塞外侧壁上具有环形安装槽12，所述环形安装槽内设有密封圈13。A second solenoid valve 8 is installed on the second braking pipeline, and the second solenoid valve is configured to be in a closed state when it is powered on, and to be in an open state when it is powered off. The first solenoid valve and the second solenoid valve are connected to the VCU of the whole vehicle through wires. The energy storage device includes a casing 9, a piston 10 and an elastic element 11 are arranged in the casing, one end of the elastic element is connected to the piston, and the other end is connected to the bottom end of the casing. The elastic element is a spring. An annular mounting groove 12 is formed on the outer wall of the piston, and a sealing ring 13 is arranged in the annular mounting groove.
本发明的实施例实施时，车辆在正常状态下EPB正常工作，实现驻车。第一电磁阀在驾驶员踩下制动踏板时，短暂打开，后关闭，高压制动液进入腔体内。当整车电力失效时，第二电磁阀打开，第二电磁阀为在不通电时为打开状态，通电时为关闭状态；第一电磁阀在通电时为打开状态，不通电时为关闭状态。在正常供电时，可以通过整车VCU通过供电/断电控制其开闭）第二电磁阀关闭。高压制动液通过卡钳进油口进入卡钳，推动缸体押金摩擦片，实现驻车。若整车处于安全状态后，只需拆掉油管，即可解除驻车。When the embodiment of the present invention is implemented, the EPB works normally in the normal state of the vehicle to realize parking. When the driver depresses the brake pedal, the first electromagnetic valve is opened for a short time and then closed, and the high-pressure brake fluid enters the cavity. When the electric power of the whole vehicle fails, the second electromagnetic valve is opened, and the second electromagnetic valve is open when not energized, and closed when energized; the first electromagnetic valve is open when energized, and closed when not energized. When the power supply is normal, the VCU of the whole vehicle can be used to control its opening and closing through power supply/power off) The second solenoid valve is closed. The high-pressure brake fluid enters the caliper through the oil inlet of the caliper, and pushes the deposit friction plate of the cylinder to realize parking. If the whole vehicle is in a safe state, the parking can be released by simply removing the oil pipe.
实施例2：Example 2:
本发明提供的一种车用EPB失效后驻车保障装置，包括: 蓄能装置，用于储蓄并调节制动力的大小；第二制动管路，所述第二制动管路一端连接蓄能装置，另一端连接卡钳。The invention provides a vehicle EPB parking protection device after failure, comprising: an energy storage device for storing and adjusting the size of the braking force; a second brake pipeline, one end of which is connected to the storage battery The other end is connected to the caliper.
上述各实施例仅用于说明本发明，其中各部件的结构、连接方式等都是可以有所变化的，凡是在本发明技术方案的基础上进行的等同变换和改进，均不应排除在本发明的保护范围之外。Above-mentioned each embodiment is only for illustrating the present invention, wherein the structure of each component, connection mode etc. all can be changed to some extent, every equivalent conversion and improvement carried out on the basis of the technical solution of the present invention, all should not be excluded from the present invention. outside the scope of protection of the invention.
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| US5897173A (en) * | 1997-05-21 | 1999-04-27 | Brake Parts, Inc. | Control assembly for providing redundant control outputs for operating a parking brake system |
| DE10150803A1 (en) * | 2001-10-15 | 2003-05-08 | Lucas Automotive Gmbh | Hydraulic vehicle brake with electrically operated parking device, has electronic control unit that varies electric motor control signals depending on sensor signals representing operating states |
| CN101332812A (en) * | 2007-06-25 | 2008-12-31 | 现代摩比斯株式会社 | Single motor electro wedge brake system using solenoid mechanism for implementing additional functions |
| CN106926833A (en) * | 2015-12-30 | 2017-07-07 | 大陆泰密克汽车系统（上海）有限公司 | A kind of hydraulic pressure parking assist brakes and the vehicle with the system |
| CN208576550U (en) * | 2018-06-14 | 2019-03-05 | 浙江零跑科技有限公司 | Parking protection device after vehicle EPB fails |
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Application publication date: 20181127 |