BRAKE SYSTEM, HYDRAULIC APPARATUS, AND VEHICLE
Embodiments of this application provide a brake system and a control method. The brake control system includes: a master cylinder ( 1 ), a booster ( 2 ), at least one first control valve ( 11 and 12 ), at least one second control valve ( 21, 22, 23 , and 24 ), at least one third control valve ( 31, 32, 33 , and 34 ), at least one first interface ( 4 ), a first control unit ( 91 ), and a second control unit ( 92 ). The brake system provided in embodiments of this application has a plurality of redundancy designs, to ensure that the brake system can still meet a plurality of brake function requirements of a vehicle when a controller or a key solenoid valve fails, so as to improve security of the brake system, ensure a pedal feeling of a driver, and bring more stable and comfortable driving experience to the driver.
1 . A brake system, wherein the brake system comprises: a master cylinder ( 1 ), a booster ( 2 ), at least one first control valve ( 11 and 12 ), at least one second control valve ( 21 , 22 , 23 , and 24 ), at least one third control valve ( 31 , 32 , 33 , and 34 ), at least one first interface ( 4 ), a first control unit ( 91 ), and a second control unit ( 92 );
a first end of the at least one third control valve ( 31 , 32 , 33 , and 34 ) is respectively connected to the at least one first interface ( 4 );
a second end of the at least one third control valve ( 31 , 32 , 33 , and 34 ) is connected to the master cylinder ( 1 ) through the at least one first control valve ( 11 and 12 );
the second end of the at least one third control valve ( 31 , 32 , 33 , and 34 ) is further connected to the booster ( 2 ) through the at least one second control valve ( 21 , 22 , 23 , and 24 );
the at least one third control valve ( 31 , 32 , 33 , and 34 ) is configured to be controlled by the first control unit ( 91 );
the at least one second control valve ( 21 , 22 , 23 , and 24 ) comprises at least one first booster branch control valve ( 21 and 22 ) and at least one second booster branch control valve ( 23 and 24 ), the at least one first booster branch control valve ( 21 and 22 ) is configured to be controlled by the first control unit ( 91 ), and the at least one second booster branch control valve ( 23 and 24 ) is configured to be controlled by the second control unit ( 92 ); and
the booster ( 2 ) is configured to be separately controlled by the first control unit ( 91 ) and the second control unit ( 92 ).
2 . The brake system according to claim 1 , wherein the booster ( 2 ) comprises a booster drive apparatus ( 201 ) and a booster hydraulic cylinder ( 202 ), and the booster drive apparatus ( 201 ) is configured to be separately controlled by the first control unit ( 91 ) and the second control unit ( 92 ).
3 . The brake system according to claim 2 , wherein the booster drive apparatus ( 201 ) is a six-phase motor comprising a first winding and a second winding, the first winding is configured to be controlled by the first control unit ( 91 ), and the second winding is configured to be controlled by the second control unit ( 92 ).
4 . The brake system according to claim 2 , wherein the booster hydraulic cylinder ( 202 ) is a bidirectional pressurization hydraulic cylinder, the booster hydraulic cylinder ( 202 ) comprises a first booster cavity and a second booster cavity, the at least one first booster branch control valve ( 21 and 22 ) is connected to the first booster cavity, and the at least one second booster branch control valve ( 23 and 24 ) is connected to the second booster cavity.
5 . The brake system according to claim 2 , wherein the booster hydraulic cylinder ( 202 ) is a unidirectional pressurization hydraulic cylinder, and the at least one first booster branch control valve ( 21 and 22 ) and the at least one second booster branch control valve ( 23 and 24 ) are connected in parallel, and are separately connected to the booster hydraulic cylinder ( 202 ).
6 . The brake system according to claim 4 , further comprising a brake fluid reservoir ( 5 ) and a fifth control valve ( 51 ), wherein the brake fluid reservoir ( 5 ) is separately connected to the master cylinder ( 1 ) and the booster ( 2 ), a first end of the fifth control valve ( 51 ) is connected to the master cylinder ( 1 ), and a second end of the fifth control valve ( 51 ) is configured to be connected to the brake fluid reservoir ( 5 ).
7 . The brake system according to claim 6 , further comprising a pedal feeling simulator ( 6 ) and a sixth control valve ( 61 ), wherein the pedal feeling simulator ( 6 ) is connected to the master cylinder ( 1 ) through the sixth control valve ( 61 ).
8 . The brake system according to claim 7 , further comprising at least one fourth control valve ( 41 , 42 , 43 , and 44 ), wherein a first end of the at least one fourth control valve ( 41 , 42 , 43 , and 44 ) is respectively connected to the at least one first interface ( 4 ), the other end of the at least one fourth control valve ( 41 , 42 , 43 , and 44 ) is configured to be connected to the brake fluid reservoir ( 5 ), and the at least one fourth control valve is configured to be controlled by the first control unit ( 91 ).
9 . The brake system according to claim 8 , wherein the at least one first booster branch control valve ( 21 and 22 ) is further configured to be controlled by the second control unit ( 92 ), and the at least one second booster branch control valve ( 23 and 24 ) is further configured to be controlled by the first control unit ( 91 ).
10 . The brake system according to claim 8 , wherein the at least one third control valve ( 31 , 32 , 33 , and 34 ) and the at least one fourth control valve ( 41 , 42 , 43 , and 44 ) are further configured to be controlled by the second control unit ( 92 ).
11 . The brake system according to claim 8 , wherein
the at least one first control valve ( 11 and 12 ) is configured to be separately controlled by the first control unit ( 91 ) and the second control unit ( 92 );
the fifth control valve ( 51 ) is configured to be controlled by the first control unit ( 91 ); and
the sixth control valve ( 61 ) is configured to be separately controlled by the first control unit ( 91 ) and the second control unit ( 92 ).
12 . The brake system according to claim 8 , further comprising a third control unit ( 93 ), wherein
the at least one first control valve ( 11 and 12 ) is configured to be controlled by the third control unit ( 93 );
the fifth control valve ( 51 ) is configured to be controlled by the third control unit ( 93 ); and
the sixth control valve ( 61 ) is configured to be controlled by the third control unit ( 93 ).
13 . The brake system according to claim 12 , further comprising at least one second interface and at least one third interface, wherein the at least one first control valve ( 11 and 12 ) is separately connected to the at least one third control valve ( 31 , 32 , 33 , and 34 ) through the at least one second interface, the at least one fourth control valve ( 41 , 42 , 43 , and 44 ) is connected to the brake fluid reservoir ( 5 ) through the third interface, and the booster ( 2 ) is connected to the brake fluid reservoir ( 5 ) through the at least one third interface.
14 . A hydraulic apparatus, wherein the hydraulic apparatus comprises: a booster ( 2 ), at least one second control valve ( 21 , 22 , 23 , and 24 ), at least one third control valve ( 31 , 32 , 33 , and 34 ), at least one fourth control valve ( 41 , 42 , 43 , and 44 ), a first control unit ( 91 ), a second control unit ( 92 ), at least one first interface ( 4 ), at least one second interface, and at least one third interface;
a first end of the at least one third control valve ( 31 , 32 , 33 , and 34 ) is respectively connected to the at least one first interface ( 4 );
a second end of the at least one third control valve ( 31 , 32 , 33 , and 34 ) is connected to the at least one second interface, and the at least one second interface is configured to be connected to a master cylinder;
the second end of the at least one third control valve ( 31 , 32 , 33 , and 34 ) is further connected to the booster ( 2 ) through the at least one second control valve ( 21 , 22 , 23 , and 24 );
the booster ( 2 ) is connected to the at least one third interface, and the at least one third interface is configured to be connected to a brake fluid reservoir;
a first end of the at least one fourth control valve ( 41 , 42 , 43 , and 44 ) is connected to the at least one first interface, and a second end of the at least one fourth control valve ( 41 , 42 , 43 , and 44 ) is connected to the at least one third interface;
the at least one third control valve ( 31 , 32 , 33 , and 34 ) is configured to be controlled by the first control unit ( 91 );
the at least one second control valve ( 21 , 22 , 23 , and 24 ) comprises at least one first booster branch control valve ( 21 and 22 ) and at least one second booster branch control valve ( 23 and 24 ), the at least one first booster branch control valve ( 21 and 22 ) is configured to be controlled by the first control unit ( 91 ), and the at least one second booster branch control valve ( 23 and 24 ) is configured to be controlled by the second control unit ( 92 ); and
the booster ( 2 ) is configured to be separately controlled by the first control unit ( 91 ) and the second control unit ( 92 ).
15 . The hydraulic apparatus according to claim 14 , wherein the booster ( 2 ) comprises a booster drive apparatus ( 201 ) and a booster hydraulic cylinder ( 202 ), and the booster drive apparatus ( 201 ) is configured to be separately controlled by the first control unit ( 91 ) and the second control unit ( 92 ).
16 . The hydraulic apparatus according to claim 15 , wherein the booster drive apparatus ( 201 ) is a six-phase motor comprising a first winding and a second winding, the first winding is configured to be controlled by the first control unit ( 91 ), and the second winding is configured to be controlled by the second control unit ( 92 ).
17 . The hydraulic apparatus according to claim 15 , wherein the booster hydraulic cylinder ( 202 ) is a bidirectional pressurization hydraulic cylinder, the booster hydraulic cylinder ( 202 ) comprises a first booster cavity and a second booster cavity, the at least one first booster branch control valve ( 21 and 22 ) is connected to the first booster cavity, and the at least one second booster branch control valve ( 23 and 24 ) is connected to the second booster cavity.
18 . The hydraulic apparatus according to claim 15 , wherein the booster hydraulic cylinder ( 202 ) is a unidirectional pressurization hydraulic cylinder, and the at least one first booster branch control valve ( 21 and 22 ) and the at least one second booster branch control valve ( 23 and 24 ) are connected in parallel, and are separately connected to the booster hydraulic cylinder ( 202 ).
19 . The hydraulic apparatus according to claim 17 , wherein the at least one first booster branch control valve ( 21 and 22 ) is further configured to be controlled by the second control unit ( 92 ), and the at least one second booster branch control valve ( 23 and 24 ) is further configured to be controlled by the first control unit ( 91 ).
20 . A vehicle, wherein the vehicle comprises the brake system according to claim 1 .