Braking system for double electric drive axles and vehicle

Abstract

The utility model provides a braking system for double electric drive axles and a vehicle, and relates to the field of vehicles, the braking system comprises an auxiliary air cylinder, a first switch piece and a second switch piece; the first switch piece is communicated with the auxiliary air cylinder and the first electric drive axle brake chamber; the second switch piece is communicated with the auxiliary air cylinder and the second electric drive axle brake chamber. In the using process, when a first wheel slips, the first switch piece is turned on, auxiliary braking gas in the auxiliary gas storage cylinder is conveyed into the first electric drive axle braking gas chamber, the first wheel corresponding to the first electric drive axle braking gas chamber is braked, and therefore the slipping trend of the first wheel is reduced, and starting and escaping of a vehicle are facilitated; and the second switch piece is similar. Through cooperative use of the first switch piece and the second switch piece, the first wheel or the second wheel can be independently braked, so that inter-axle differential speed between the double electric drive axles is achieved, it is guaranteed that the slipping trend of the vehicle can be reduced, and vehicle starting and getting out of trouble are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicles, in particular to a brake system for a double electric drive axle and a vehicle. BACKGROUND

[0002] At present, the double electric drive axle has been widely applied to various vehicle models.

[0003] For the vehicle model with the double electric drive axle, due to the characteristics of the electric drive axle itself, when the vehicle brakes, the brake gas in the vehicle gas cylinder will be simultaneously introduced into the brake chambers corresponding to the two electric drive axles, so that the wheels corresponding to the two electric drive axles are simultaneously braked.

[0004] Since the existing vehicle model with the double electric drive axle brakes, the wheels corresponding to the two electric drive axles are simultaneously braked, that is, the existing double electric drive axle cannot realize the differential between the axles, which is easy to cause the wheels to slip and makes it difficult for the vehicle to start and get out of trouble. CONTENT OF THE INVENTION

[0005] The present application provides a brake system for a double electric drive axle and a vehicle to solve the technical problem that the existing double electric drive axle cannot realize the differential between the axles.

[0006] A first aspect of the embodiments of the present application provides a brake system for a double electric drive axle, comprising:

[0007] an auxiliary gas cylinder for storing auxiliary brake gas;

[0008] a first switch member for controlling the connection and disconnection between the auxiliary gas cylinder and a first electric drive axle brake chamber of a vehicle, so as to brake a first wheel corresponding to the first electric drive axle brake chamber when the auxiliary gas cylinder and the first electric drive axle brake chamber are connected.

[0009] a second switch member for controlling the connection and disconnection between the auxiliary gas cylinder and a second electric drive axle brake chamber of the vehicle, so as to brake a second wheel corresponding to the second electric drive axle brake chamber when the auxiliary gas cylinder and the second electric drive axle brake chamber are connected.

[0010] In a possible implementation, a first control assembly is further included, a first gas inlet end of the first control assembly is used to be connected with a vehicle gas cylinder of the vehicle through a brake system control module of the vehicle, a first gas outlet end of the first control assembly is used to be connected with the first electric drive axle brake chamber, so that the brake gas in the vehicle gas cylinder is introduced into the first electric drive axle brake chamber to brake the first wheel, and two ends of the first switch member are respectively connected with the auxiliary gas cylinder and a second gas inlet end of the first control assembly, so that the auxiliary gas cylinder is connected with the first electric drive axle brake chamber through the first switch member and the first control assembly in sequence.

[0011] In a possible implementation, the second control assembly is further included, a third air inlet end of the second control assembly is configured to communicate with the vehicle reservoir through the brake system control module, and a second air outlet end of the second control assembly is configured to communicate with a second electric drive axle brake chamber of the vehicle, so that the brake gas in the vehicle reservoir is introduced into the second electric drive axle brake chamber to brake the second wheel.

[0012] In a possible implementation, the first control assembly includes a first double-check valve and a second double-check valve.

[0013] One air inlet of the first double-check valve is configured to communicate with the auxiliary reservoir through the first switch, another air inlet of the first double-check valve is configured to communicate with the vehicle reservoir through the brake system control module, and an air outlet of the first double-check valve is configured to communicate with a first left wheel brake chamber of the first electric drive axle brake chamber, so that the first left wheel brake chamber controls the left wheel brake of the first wheel.

[0014] One air inlet of the second double-check valve is configured to communicate with the auxiliary reservoir through the first switch, another air inlet of the second double-check valve is configured to communicate with the vehicle reservoir through the brake system control module, and an air outlet of the second double-check valve is configured to communicate with a first right wheel brake chamber of the first electric drive axle brake chamber, so that the first right wheel brake chamber controls the right wheel brake of the first wheel.

[0015] In a possible implementation, the second control assembly includes a third double-check valve and a fourth double-check valve.

[0016] One air inlet of the third double-check valve is configured to communicate with the auxiliary reservoir through the second switch, another air inlet of the third double-check valve is configured to communicate with the vehicle reservoir through the brake system control module, and an air outlet of the third double-check valve is configured to communicate with a second left wheel brake chamber of the second electric drive axle brake chamber, so that the second left wheel brake chamber controls the left wheel brake of the second wheel.

[0017] An air inlet of the fourth double-pass one-way valve is communicated with the auxiliary air reservoir through the second switch, and another air inlet of the fourth double-pass one-way valve is used for being communicated with the vehicle air reservoir through the brake system control module, and an air outlet of the fourth double-pass one-way valve is used for being communicated with a second right wheel brake air chamber of the second electric drive axle brake air chamber, and the second right wheel brake air chamber is used for controlling right side wheel brake of the second wheel.

[0018] In a possible implementation, the first control member and the second control member are further included, the first control member is connected with the first switch member, and the first control member is used for opening or closing the first switch member; and the second control member is connected with the second switch member, and the second control member is used for opening or closing the second switch member.

[0019] In a possible implementation, the first control member and the second control member are both arranged on an instrument desk of the vehicle.

[0020] In a possible implementation, at least one of the first switch member and the second switch member is an electromagnetic valve.

[0021] A second aspect of the embodiment of the application provides a vehicle, including a vehicle body, and further including the brake system for double electric drive axles as described in any one of the above.

[0022] In a possible implementation, the brake system control module, the vehicle air reservoir, the first electric drive axle brake air chamber, the second electric drive axle brake air chamber, the first wheel and the second wheel are further included and arranged on the vehicle body, the vehicle air reservoir is communicated with the first electric drive axle brake air chamber and the second electric drive axle brake air chamber through the brake system control module, the auxiliary air reservoir of the brake system for double electric drive axles is communicated with the first electric drive axle brake air chamber through the first switch member and communicated with the second electric drive axle brake air chamber through the second switch member, the first electric drive axle brake air chamber is connected with the first wheel to control the first wheel brake, and the second electric drive axle brake air chamber is connected with the second wheel to control the second wheel brake.

[0023] The application provides a brake system for double electric drive axle and a vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application.

[0025] Figure 1 The structure diagram of the brake system for double electric drive axle provided by the embodiments of the application is shown.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 10 - first electric drive axle brake chamber; 11 - first left wheel brake chamber; 12 - first right wheel brake chamber;

[0028] 20 - first wheel;

[0029] 30 - second electric drive axle brake chamber; 31 - second left wheel brake chamber; 32 - second right wheel brake chamber;

[0030] 40 - second wheel;

[0031] 50 - brake system control module;

[0032] 60 - vehicle reservoir;

[0033] 100 - auxiliary reservoir;

[0034] 200 - first switching element;

[0035] 300 - second switching element;

[0036] 400 - first control assembly; 410 - first double-check valve; 420 - second double-check valve;

[0037] 500 - second control assembly; 510 - third double-check valve; 520 - fourth double-check valve;

[0038] 600 - first control element;

[0039] 700 - second control element.

[0040] The specific embodiments have been shown and described in the above description in connection with the accompanying drawings. In the above description, well-known functions or constructions are not described in detail because they would obscure the application in unnecessary detail. The drawings are high-level representations designed to provide a functional overview of the illustrative embodiments and to convey the principles therebehind. Therefore, those skilled in the art will recognize that the previous description with reference to the drawings is not limiting of the scope of the application. Those skilled in the art will recognize or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments described herein. It is, therefore, to be understood that the application is not to be limited to the specific embodiments set forth above and below, but only by the claims. Among the issues not described in detail above are computer requirements, network configurations, and hardware / software interface techniques. It is therefore contemplated to be within the scope of the following claims to carry out the application in alternative embodiments or using any other methods that are now known or become available. DETAILED DESCRIPTION

[0041] The illustrative embodiments will be described with reference to the accompanying drawings, which are by way of illustration, not by way of limitation, of the application. Wherever possible, the same reference numbers used throughout the drawings refer to the same or like parts. The following description is not intended to limit the application to the described embodiments, but to provide an illustrative discussion of the principles of the application. Other embodiments can be apparent to those skilled in the art in view of this disclosure.

[0042] It should be noted that all directional references (e.g., upper, lower, left, right, front, rear, etc.) are in relation to the exemplary embodiment, as shown in the drawings, and are used only by way of illustration of the orientation of the elements in the drawings. Any reference to north, south, east, or west, is understood to be in relation to a geographic direction and not to be construed as limiting the application to any geographic region.

[0043] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0044] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0045] At present, double electric drive axle has been widely applied to various vehicle models.

[0046] For the vehicle model of double electric drive axle, due to the characteristics of electric drive axle itself, when the vehicle brakes, the brake gas in the vehicle air reservoir will be simultaneously introduced into the brake chambers corresponding to the two electric drive axles, so that the wheels corresponding to the two electric drive axles will be braked at the same time.

[0047] Because the existing double electric drive axle vehicle model brakes, the wheels corresponding to the two electric drive axles will be braked at the same time, that is, the existing double electric drive axle cannot realize the differential between the axles, which is easy to cause the wheels to slip, making it difficult for the vehicle to start and get out of trouble.

[0048] To solve the technical problem that the existing double electric drive axle cannot realize differential between axles, the application provides a brake system for double electric drive axle and a vehicle, the brake system for double electric drive axle comprises an auxiliary air cylinder, a first switch and a second switch, the auxiliary air cylinder is used for storing auxiliary brake gas; the first switch is used for controlling the connection and disconnection between the auxiliary air cylinder and a first electric drive axle brake air chamber of the vehicle, so as to brake a first wheel corresponding to the first electric drive axle brake air chamber when the auxiliary air cylinder and the first electric drive axle brake air chamber are connected; the second switch is used for controlling the connection and disconnection between the auxiliary air cylinder and a second electric drive axle brake air chamber of the vehicle, so as to brake a second wheel corresponding to the second electric drive axle brake air chamber when the auxiliary air cylinder and the second electric drive axle brake air chamber are connected.

[0049] When the first wheel corresponding to the first electric drive axle brake air chamber slips, the brake system for double electric drive axle provided by the application is used, the first switch is opened, the auxiliary brake gas in the auxiliary air cylinder is delivered into the first electric drive axle brake air chamber, the first wheel corresponding to the first electric drive axle brake air chamber is braked, the slipping trend of the first wheel is reduced, the differential between the first wheel corresponding to the first electric drive axle and the second wheel corresponding to the second electric drive axle is realized, that is, the differential between the axles of the double electric drive axle is realized, the second wheel corresponding to the second electric drive axle brake air chamber is helped to get out of trouble, the slipping trend of the vehicle is reduced, and the vehicle is helped to start and get out of trouble; similarly, when the second wheel corresponding to the second electric drive axle brake air chamber slips, the second switch is opened, the auxiliary brake gas in the auxiliary air cylinder is delivered into the second electric drive axle brake air chamber, the second wheel corresponding to the second electric drive axle brake air chamber is braked, the slipping trend of the second wheel is reduced, the differential between the second wheel corresponding to the second electric drive axle and the first wheel corresponding to the first electric drive axle is realized, that is, the differential between the axles of the double electric drive axle is realized, the first wheel corresponding to the first electric drive axle brake air chamber is helped to get out of trouble, the slipping trend of the vehicle is reduced, and the vehicle is helped to start and get out of trouble.

[0050] The brake system for double electric drive axle provided by the application can brake the first wheel or the second wheel respectively and individually through the cooperation of the first switch and the second switch, so as to realize the differential between the axles of the double electric drive axle, solve the technical problem that the existing double electric drive axle cannot realize differential between axles, and ensure that the slipping trend of the vehicle is reduced and the vehicle is helped to start and get out of trouble.

[0051] The technical solutions of the application will be described in detail below with reference to specific embodiments and the accompanying drawings. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in detail in some embodiments.

[0052] Referring to Figure 1 , as shown in the drawings, Figure 1A structural schematic diagram of a brake system for a double electric drive axle provided by an embodiment of the present application.

[0053] An embodiment of the present application provides a brake system for a double electric drive axle, comprising an auxiliary air cylinder 100, a first switch 200 and a second switch 300.

[0054] The auxiliary air cylinder 100 is used for storing auxiliary brake gas.

[0055] The first switch 200 is used for controlling the connection and disconnection between the auxiliary air cylinder 100 and a first electric drive axle brake chamber 10 of a vehicle, so as to brake a first wheel 20 corresponding to the first electric drive axle brake chamber 10 when the auxiliary air cylinder 100 and the first electric drive axle brake chamber 10 are connected.

[0056] The second switch 300 is used for controlling the connection and disconnection between the auxiliary air cylinder 100 and a second electric drive axle brake chamber 30 of the vehicle, so as to brake a second wheel 40 corresponding to the second electric drive axle brake chamber 30 when the auxiliary air cylinder 100 and the second electric drive axle brake chamber 30 are connected.

[0057] In the brake system for the double electric drive axle of the present application, the auxiliary air cylinder 100 is used for storing auxiliary brake gas, i.e. compressed air, and when the compressed air is delivered into the first electric drive axle brake chamber 10 or the second electric drive axle brake chamber 30, the first electric drive axle brake chamber 10 or the second electric drive axle brake chamber 30 can be braked.

[0058] The first switch 200 and the second switch 300 can both be electromagnetic valves. When the first switch 200 is opened, the auxiliary air cylinder 100 is connected with the first electric drive axle brake chamber 10, so that the auxiliary brake gas in the auxiliary air cylinder 100 can be delivered into the first electric drive axle brake chamber 10, and when the auxiliary brake gas is delivered into the first electric drive axle brake chamber 10, the first wheel 20 corresponding to the first electric drive axle brake chamber 10 is braked. When the first switch 200 is closed, the auxiliary air cylinder 100 is disconnected with the first electric drive axle brake chamber 10, so that the auxiliary brake gas cannot be delivered into the first electric drive axle brake chamber 10, and the first wheel 20 corresponding to the first electric drive axle brake chamber 10 cannot be braked. The principle of opening or closing of the second switch 300 is the same as that of the first switch 200, and will not be described here.

[0059] The brake system of the double electric drive axle of the application, when in use, when the first wheel 20 corresponding to the first electric drive axle brake chamber 10 slips, the auxiliary brake gas in the auxiliary gas cylinder 100 is delivered to the first electric drive axle brake chamber 10 by opening the first switch 200, so as to brake the first wheel 20 corresponding to the first electric drive axle brake chamber 10, thereby reducing the slipping trend of the first wheel 20, realizing the differential speed between the first wheel 20 corresponding to the first electric drive axle and the second wheel 40 corresponding to the second electric drive axle, that is, realizing the inter-axle differential speed between the double electric drive axles, thereby facilitating the second wheel 40 corresponding to the second electric drive axle brake chamber 30 to get out of trouble, ensuring that the vehicle can reduce the slipping trend and facilitate the vehicle to start and get out of trouble; similarly, when the second wheel 40 corresponding to the second electric drive axle brake chamber 30 slips, the auxiliary brake gas in the auxiliary gas cylinder 100 is delivered to the second electric drive axle brake chamber 30 by opening the second switch 300, so as to brake the second wheel 40 corresponding to the second electric drive axle brake chamber 30, thereby reducing the slipping trend of the second wheel 40, realizing the differential speed between the second wheel 40 corresponding to the second electric drive axle and the first wheel 20 corresponding to the first electric drive axle, that is, realizing the inter-axle differential speed between the double electric drive axles, thereby facilitating the first wheel 20 corresponding to the first electric drive axle brake chamber 10 to get out of trouble, ensuring that the vehicle can reduce the slipping trend and facilitate the vehicle to start and get out of trouble.

[0060] The brake system of the double electric drive axle of the application can brake the first wheel 20 or the second wheel 40 respectively and independently by the cooperation between the first switch 200 and the second switch 300, thereby realizing the inter-axle differential speed between the double electric drive axles, solving the technical problem that the existing double electric drive axles cannot realize the inter-axle differential speed, and ensuring that the vehicle can reduce the slipping trend and facilitate the vehicle to start and get out of trouble.

[0061] In an embodiment, a first control assembly 400 is further included, a first gas inlet end of the first control assembly 400 is used for being communicated with a vehicle gas cylinder 60 of the vehicle through a brake system control module 50 of the vehicle, a first gas outlet end of the first control assembly 400 is used for being communicated with the first electric drive axle brake chamber 10, so that the brake gas in the vehicle gas cylinder 60 is delivered into the first electric drive axle brake chamber 10 to brake the first wheel 20, and two ends of the first switch 200 are respectively communicated with the auxiliary gas cylinder 100 and a second gas inlet end of the first control assembly 400, so that the auxiliary gas cylinder 100 is communicated with the first electric drive axle brake chamber 10 through the first switch 200 and the first control assembly 400 in sequence.

[0062] It should be noted that the first control assembly 400 has a first air inlet end, a second air inlet end and a first air outlet end. In the embodiment, the brake system control module 50 can be an EBS double-channel control module. The first control assembly 400 is used to simultaneously connect the brake system control module 50 of the vehicle and the first switch piece 200 of the application to the first electric drive axle brake chamber 10, that is, the first control assembly 400 is used to simultaneously connect the vehicle air reservoir 60 and the auxiliary air reservoir 100 to the first electric drive axle brake chamber 10. When the vehicle uses the brake normally, the brake gas in the vehicle air reservoir 60 can be introduced into the first electric drive axle brake chamber 10 and the second electric drive axle brake chamber 30 through the first control assembly 400 and the second control assembly 500, so as to simultaneously brake the first wheel 20 and the second wheel 40. When the first wheel 20 slips and the differential speed between the first wheel 20 and the second wheel 40 needs to be realized, the first wheel 20 is braked alone by opening the first switch piece 200, so as to prevent the first wheel 20 from slipping.

[0063] In other embodiments, a second control assembly 500 is further included. A third air inlet end of the second control assembly 500 is used to communicate with the vehicle air reservoir 60 through the brake system control module 50. A second air outlet end of the second control assembly 500 is used to communicate with the second electric drive axle brake chamber 30 of the vehicle, so that the brake gas in the vehicle air reservoir 60 is introduced into the second electric drive axle brake chamber 30 to brake the second wheel 40. Two ends of the second switch piece 300 are respectively connected to the auxiliary air reservoir 100 and the fourth air inlet end of the second control assembly 500, so that the auxiliary air reservoir 100 is sequentially connected to the second electric drive axle brake chamber 30 through the second switch piece 300 and the second control assembly 500.

[0064] It should be noted that the second control assembly 500 has a third air inlet end, a fourth air inlet end and a second air outlet end. In the embodiment, the working principle of the second control assembly 500 is the same as that of the first control assembly 400, which will not be described here.

[0065] In other embodiments, the first control assembly 400 includes a first double-way check valve 410 and a second double-way check valve 420.

[0066] One air inlet of the first double-way check valve 410 is connected to the auxiliary air reservoir 100 through the first switch piece 200. The other air inlet of the first double-way check valve 410 is used to communicate with the vehicle air reservoir 60 through the brake system control module 50. The air outlet of the first double-way check valve 410 is used to communicate with the first left wheel brake chamber 11 of the first electric drive axle brake chamber 10, and the first left wheel brake chamber 11 is used to control the left wheel brake of the first wheel 20.

[0067] One inlet of the second dual-way check valve 420 is in communication with the auxiliary air cylinder 100 through the first switch 200, and the other inlet of the second dual-way check valve 420 is in communication with the vehicle air cylinder 60 through the brake system control module 50, and the outlet of the second dual-way check valve 420 is in communication with the first right wheel brake chamber 12 of the first electric drive axle brake chamber 10, and the first right wheel brake chamber 12 is used to control the right wheel brake of the first wheel 20.

[0068] In this embodiment, when the first switch 200 is opened, the auxiliary brake gas in the auxiliary air cylinder 100 is introduced into the first left wheel brake chamber 11 and the first right wheel brake chamber 12 through the first dual-way check valve 410 and the second dual-way check valve 420 respectively, and the left wheel brake of the first wheel 20 and the right wheel brake of the first wheel 20 are simultaneously realized.

[0069] In some embodiments, the second control assembly 500 includes a third dual-way check valve 510 and a fourth dual-way check valve 520.

[0070] One inlet of the third dual-way check valve 510 is in communication with the auxiliary air cylinder 100 through the second switch 300, and the other inlet of the third dual-way check valve 510 is in communication with the vehicle air cylinder 60 through the brake system control module 50, and the outlet of the third dual-way check valve 510 is in communication with the second left wheel brake chamber 31 of the second electric drive axle brake chamber 30, and the second left wheel brake chamber 31 is used to control the left wheel brake of the second wheel 40.

[0071] One inlet of the fourth dual-way check valve 520 is in communication with the auxiliary air cylinder 100 through the second switch 300, and the other inlet of the fourth dual-way check valve 520 is in communication with the vehicle air cylinder 60 through the brake system control module 50, and the outlet of the fourth dual-way check valve 520 is in communication with the second right wheel brake chamber 32 of the second electric drive axle brake chamber 30, and the second right wheel brake chamber 32 is used to control the right wheel brake of the second wheel 40.

[0072] In this embodiment, when the second switch 300 is opened, the auxiliary brake gas in the auxiliary air cylinder 100 is introduced into the second left wheel brake chamber 31 and the second right wheel brake chamber 32 through the third dual-way check valve 510 and the fourth dual-way check valve 520 respectively, and the left wheel brake of the second wheel 40 and the right wheel brake of the second wheel 40 are simultaneously realized.

[0073] In some possible embodiments, the first control member 600 is connected with the first switch member 200, and the first control member 600 is configured to turn on or turn off the first switch member 200. The second control member 700 is connected with the second switch member 300, and the second control member 700 is configured to turn on or turn off the second switch member 300.

[0074] In the embodiment, the first switch member 200 and the second switch member 300 are controlled by the first control member 600 and the second control member 700, so that the user can turn on or turn off the first switch member 200 and the second switch member 300.

[0075] In other possible embodiments, the first control member 600 and the second control member 700 are both arranged on an instrument desk of the vehicle.

[0076] In the embodiment, the user only needs to operate the first control member 600 and the second control member 700 on the instrument desk of the vehicle, so as to control the first switch member 200 and the second switch member 300, thereby improving the convenience of the user and facilitating the user to timely feedback the wheel slip and stop the wheel slip.

[0077] In another possible embodiment, at least one of the first switch member 200 and the second switch member 300 is an electromagnetic valve.

[0078] In the embodiment, the first switch member 200 or the second switch member 300 is arranged as an electromagnetic valve, so as to facilitate remote operation of the user.

[0079] Further, the first switch member 200 and the second switch member 300 are both ASR (Anti-Slip Regulation) electromagnetic valves.

[0080] In another possible embodiment, the auxiliary brake gas and the brake gas in the vehicle gas cylinder 60 are the same gas.

[0081] In the embodiment, the auxiliary brake gas and the brake gas in the vehicle gas cylinder 60 are both compressed air.

[0082] The second aspect of the embodiment of the application provides a vehicle, including a vehicle body, and further including the brake system for the double electric drive axle according to any of the above embodiments, wherein the brake system for the double electric drive axle is arranged on the vehicle body.

[0083] The vehicle body of the vehicle of the application is provided with the brake system for double electric drive axle of the application, the brake system for double electric drive axle comprises an auxiliary air cylinder 100, a first switch piece 200 and a second switch piece 300, the auxiliary air cylinder 100 is used for storing auxiliary brake gas; the first switch piece 200 is used for controlling the on-off between the auxiliary air cylinder 100 and the first electric drive axle brake chamber 10 of the vehicle, so as to brake the first wheel 20 corresponding to the first electric drive axle brake chamber 10 when the auxiliary air cylinder 100 and the first electric drive axle brake chamber 10 are communicated; the second switch piece 300 is used for controlling the on-off between the auxiliary air cylinder 100 and the second electric drive axle brake chamber 30 of the vehicle, so as to brake the second wheel 40 corresponding to the second electric drive axle brake chamber 30 when the auxiliary air cylinder 100 and the second electric drive axle brake chamber 30 are communicated.

[0084] When the first wheel 20 corresponding to the first electric drive axle brake chamber 10 slips, the auxiliary brake gas in the auxiliary air cylinder 100 is delivered into the first electric drive axle brake chamber 10 by opening the first switch piece 200, so as to brake the first wheel 20 corresponding to the first electric drive axle brake chamber 10, thereby reducing the slipping trend of the first wheel 20, realizing the differential speed between the first wheel 20 corresponding to the first electric drive axle and the second wheel 40 corresponding to the second electric drive axle, that is, realizing the inter-axle differential speed between the double electric drive axles, thereby facilitating the second wheel 40 corresponding to the second electric drive axle brake chamber 30 to get out of trouble, ensuring that the vehicle can reduce the slipping trend and facilitate the vehicle to start and get out of trouble.

[0085] The brake system for double electric drive axle of the application can brake the first wheel 20 or the second wheel 40 respectively and independently by the cooperation between the first switch piece 200 and the second switch piece 300, thereby realizing the inter-axle differential speed between the double electric drive axles, solving the technical problem that the existing double electric drive axles cannot realize the inter-axle differential speed, and ensuring that the vehicle can reduce the slipping trend and facilitate the vehicle to start and get out of trouble.

[0086] In other embodiments, the brake system control module 50, the vehicle reservoir 60, the first electric drive axle brake chamber 10, the second electric drive axle brake chamber 30, the first wheel 20 and the second wheel 40 are further included on the vehicle body, the vehicle reservoir 60 is in communication with the first electric drive axle brake chamber 10 and the second electric drive axle brake chamber 30 through the brake system control module 50, the auxiliary reservoir 100 for the brake system of the double electric drive axle is in communication with the first electric drive axle brake chamber 10 through the first switch 200 and in communication with the second electric drive axle brake chamber 30 through the second switch 300, the first electric drive axle brake chamber 10 is connected with the first wheel 20 to control the braking of the first wheel 20, and the second electric drive axle brake chamber 30 is connected with the second wheel 40 to control the braking of the second wheel 40.

[0087] In the present embodiment, the normal braking of the vehicle is realized through the vehicle reservoir 60, and when the first wheel 20 or the second wheel 40 needs to be prevented from slipping, the first switch 200 or the second switch 300 is opened to prevent the first wheel 20 or the second wheel 40 from slipping.

[0088] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0089] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

Claims

1. A braking system for a dual electric drive axle, characterized in that, The utility model relates to an auxiliary brake cylinder (100) for storing auxiliary brake gas, a first switch (200) for controlling the connection and disconnection between the auxiliary brake cylinder (100) and a first electric drive axle brake chamber (10) of a vehicle, so as to brake a first wheel (20) corresponding to the first electric drive axle brake chamber (10) when the auxiliary brake cylinder (100) is connected to the first electric drive axle brake chamber (10), a second switch (300) for controlling the connection and disconnection between the auxiliary brake cylinder (100) and a second electric drive axle brake chamber (30) of the vehicle, so as to brake a second wheel (40) corresponding to the second electric drive axle brake chamber (30) when the auxiliary brake cylinder (100) is connected to the second electric drive axle brake chamber (30). The utility model further comprises a first control assembly (400), a first inlet of the first control assembly (400) is connected to a vehicle brake cylinder (60) of the vehicle through a brake system control module (50) of the vehicle, a first outlet of the first control assembly (400) is connected to the first electric drive axle brake chamber (10), so that brake gas in the vehicle brake cylinder (60) is introduced into the first electric drive axle brake chamber (10) to brake the first wheel (20), and two ends of the first switch (200) are connected to the auxiliary brake cylinder (100) and a second inlet of the first control assembly (400) respectively, so that the auxiliary brake cylinder (100) is connected to the first electric drive axle brake chamber (10) through the first switch (200) and the first control assembly (400) in sequence. The utility model further comprises a second control assembly (500), a third inlet of the second control assembly (500) is connected to the vehicle brake cylinder (60) through the brake system control module (50), a second outlet of the second control assembly (500) is connected to the second electric drive axle brake chamber (30) of the vehicle, so that brake gas in the vehicle brake cylinder (60) is introduced into the second electric drive axle brake chamber (30) to brake the second wheel (40), and two ends of the second switch (300) are connected to the auxiliary brake cylinder (100) and a fourth inlet of the second control assembly (500) respectively, so that the auxiliary brake cylinder (100) is connected to the second electric drive axle brake chamber (30) through the second switch (300) and the second control assembly (500) in sequence. The first control assembly (400) comprises a first double-way check valve (410) and a second double-way check valve (420).

2. The brake system for a dual electric drive axle of claim 1, wherein, ​ 3. The brake system for a dual electric drive axle of claim 2, wherein, ​ 4. The brake system for a dual electric drive axle of claim 2, wherein, ​ One air inlet of the first double-pass one-way valve (410) is communicated with the auxiliary air cylinder (100) through the first switch piece (200), another air inlet of the first double-pass one-way valve (410) is used for being communicated with the vehicle air cylinder (60) through the brake system control module (50), and an air outlet of the first double-pass one-way valve (410) is used for being communicated with the first left wheel brake air chamber (11) of the first electric drive axle brake air chamber (10), and the first left wheel brake air chamber (11) is used for controlling left wheel brake of the first wheel (20). One air inlet of the second double-pass one-way valve (420) is communicated with the auxiliary air cylinder (100) through the first switch piece (200), another air inlet of the second double-pass one-way valve (420) is used for being communicated with the vehicle air cylinder (60) through the brake system control module (50), and an air outlet of the second double-pass one-way valve (420) is used for being communicated with the first right wheel brake air chamber (12) of the first electric drive axle brake air chamber (10), and the first right wheel brake air chamber (12) is used for controlling right wheel brake of the first wheel (20).

5. The brake system for a dual electric drive axle of claim 3, wherein, The second control assembly (500) comprises a third double-pass one-way valve (510) and a fourth double-pass one-way valve (520). One air inlet of the third double-pass one-way valve (510) is communicated with the auxiliary air cylinder (100) through the second switch piece (300), another air inlet of the third double-pass one-way valve (510) is used for being communicated with the vehicle air cylinder (60) through the brake system control module (50), and an air outlet of the third double-pass one-way valve (510) is used for being communicated with the second left wheel brake air chamber (31) of the second electric drive axle brake air chamber (30), and the second left wheel brake air chamber (31) is used for controlling left wheel brake of the second wheel (40). One air inlet of the fourth double-pass one-way valve (520) is communicated with the auxiliary air cylinder (100) through the second switch piece (300), another air inlet of the fourth double-pass one-way valve (520) is used for being communicated with the vehicle air cylinder (60) through the brake system control module (50), and an air outlet of the fourth double-pass one-way valve (520) is used for being communicated with the second right wheel brake air chamber (32) of the second electric drive axle brake air chamber (30), and the second right wheel brake air chamber (32) is used for controlling right wheel brake of the second wheel (40).

6. The brake system for a dual electric drive axle of any one of claims 1 to 5, wherein, Further comprising a first control piece (600) and a second control piece (700), the first control piece (600) is connected with the first switch piece (200), the first control piece (600) is used for opening or closing the first switch piece (200), and the second control piece (700) is connected with the second switch piece (300), and the second control piece (700) is used for opening or closing the second switch piece (300).

7. The brake system for a dual electric drive axle of claim 6, wherein, The first control member (600) and the second control member (700) are arranged on an instrument desk of the vehicle.

8. The brake system for a dual electric drive axle of any one of claims 1-5, wherein, At least one of the first switch member (200) and the second switch member (300) is an electromagnetic valve.

9. A vehicle comprising a vehicle body, characterized by The application further provides a brake system for a double electric drive axle, which is arranged on the vehicle body.

10. The vehicle of claim 9, wherein, The application further provides a brake system control module (50), a vehicle reservoir (60), a first electric drive axle brake chamber (10), a second electric drive axle brake chamber (30), a first wheel (20) and a second wheel (40), wherein the vehicle reservoir (60) is in communication with the first electric drive axle brake chamber (10) and the second electric drive axle brake chamber (30) through the brake system control module (50), the auxiliary reservoir (100) of the brake system for the double electric drive axle is in communication with the first electric drive axle brake chamber (10) through a first switch member (200) and in communication with the second electric drive axle brake chamber (30) through a second switch member (300), the first electric drive axle brake chamber (10) is connected with the first wheel (20) to control braking of the first wheel (20), and the second electric drive axle brake chamber (30) is connected with the second wheel (40) to control braking of the second wheel (40).

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