High-voltage relay and vehicle

Abstract

The utility model discloses a high-voltage relay and a vehicle, and belongs to the technical field of relays. The high-voltage relay includes: a housing; the relay body is arranged in the containing space defined by the shell, the relay body comprises a high-voltage switch circuit and a low-voltage control circuit, the high-voltage switch circuit is connected with the low-voltage control circuit, the high-voltage switch circuit is used for being connected with a high-voltage component of a vehicle, and the low-voltage control circuit is used for controlling the on-off state of the high-voltage switch circuit; the temperature control switch device is installed on the shell and comprises a temperature sensing element and a switch element, the temperature sensing element is connected with the switch element, the low-voltage control circuit is connected with the switch element, the temperature sensing element makes contact with the shell, and under the condition that the temperature sampled by the temperature sensing element is larger than or equal to a target temperature threshold value, the switch element is disconnected, and the temperature sensing element is switched off. And the low-voltage control circuit controls the high-voltage switching circuit to be switched off. The high-voltage relay can effectively reduce the heat damage risk.

Description

Technical Field

[0001] The present application belongs to the technical field of relays, and in particular relates to a high-voltage relay and a vehicle. Background Art

[0002] The high-voltage system of new energy vehicles utilizes high-voltage relays to ensure safety and protection of the high-voltage channel. These relays include fast-charge relays, pre-charge relays, and main relays. High-voltage relays are typically integrated within high-voltage components and must withstand the high currents in the high-voltage circuit. If the relays are improperly selected or aging, the high current in the high-voltage circuit can cause the high-voltage relays to heat up. If the temperature exceeds the tolerance limit, the relays cannot be disconnected in time, potentially exposing the high-voltage components and the vehicle to heat damage. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a high-voltage relay and a vehicle that can sense the relay temperature in real time, disconnect the relay in time, and reduce the risk of heat damage.

[0004] In a first aspect, the present application provides a high-voltage relay, comprising:

[0005] case;

[0006] a relay body, the relay body being disposed within the accommodation space defined by the housing, the relay body comprising a high-voltage switching circuit and a low-voltage control circuit, the high-voltage switching circuit being connected to the low-voltage control circuit, the high-voltage switching circuit being configured to connect to a high-voltage component of a vehicle, and the low-voltage control circuit being configured to control the on / off state of the high-voltage switching circuit;

[0007] A temperature-controlled switch device is installed on the housing, and includes a temperature-sensitive element and a switch element. The temperature-sensitive element and the switch element are connected, the low-voltage control circuit is connected to the switch element, and the temperature-sensitive element is in contact with the housing. When the temperature sampled by the temperature-sensitive element is greater than or equal to the target temperature threshold, the switch element is disconnected, so that the low-voltage control circuit controls the high-voltage switch circuit to disconnect.

[0008] According to the high-voltage relay of the present application, a temperature-controlled switch device is integrated, and the temperature-controlled switch device is connected to the low-voltage control circuit of the high-voltage relay. The temperature-controlled switch device senses the relay temperature in real time. When the temperature-sensing element of the temperature-controlled switch device detects that the temperature exceeds the tolerable temperature threshold, the switching element of the temperature-controlled switch device is disconnected, and the low-voltage control circuit of the high-voltage relay disconnects the high-voltage switch circuit. The high-voltage relay is disconnected in time, which can effectively reduce the risk of heat damage.

[0009] According to one embodiment of the present application, the housing is provided with a first mounting support, the temperature-controlled switch device is provided with a first mounting structure mounted in cooperation with the first mounting support, and the temperature sensing element and the switch element are fixed to the first mounting structure.

[0010] According to one embodiment of the present application, the first mounting support includes a mounting boss, the first mounting structure includes a first mounting plate, the first mounting plate is provided with a mounting through hole corresponding to the mounting boss, the first mounting plate is in contact with the mounting boss and is spaced apart from the shell, and the first mounting plate is connected to the mounting boss through the mounting through hole.

[0011] According to an embodiment of the present application, a temperature sensing plane of the temperature sensing element protrudes relative to a surface of the first mounting plate close to the housing, and the temperature sensing plane contacts the housing.

[0012] According to one embodiment of the present application, the high-voltage switch circuit is provided with a high-voltage connection contact, the high-voltage connection contact is located on the housing, and the high-voltage connection contact is connected to the high-voltage component through a high-voltage connection line.

[0013] According to one embodiment of the present application, low-voltage connection contacts are provided at both ends of the switch element, and the low-voltage control circuit is connected to the low-voltage connection contacts via a low-voltage connection line.

[0014] According to one embodiment of the present application, the temperature-controlled switch device also includes a transmission element, and the temperature sensing element is connected to the switch element through the transmission element. When the temperature sampled by the temperature sensing element is greater than or equal to the target temperature threshold, the temperature sensing element generates a deformation and is transmitted to the switch element through the transmission element to disconnect the switch element.

[0015] According to an embodiment of the present application, the housing is further provided with a second mounting structure, and the second mounting structure is used to mount the high-voltage relay on the vehicle.

[0016] In a second aspect, the present application provides a vehicle, comprising:

[0017] At least one high-voltage relay as described in the first aspect above;

[0018] At least one high-voltage component is connected to the high-voltage relay in a one-to-one correspondence.

[0019] According to the vehicle of the present application, a temperature control switch device is integrated through a high-voltage relay, and the temperature control switch device is connected to a low-voltage control circuit. The temperature control switch device senses the relay temperature in real time. When the temperature control switch device detects that the temperature exceeds the tolerable temperature threshold, the low-voltage control circuit controls the high-voltage switch circuit to disconnect, and disconnects the high-voltage relay in time, which can effectively reduce the risk of heat damage.

[0020] According to one embodiment of the present application, it further includes:

[0021] A battery management system, wherein the low-voltage control circuit of the high-voltage relay is connected to the switch element to form a low-voltage control loop, and the battery management system is arranged in the low-voltage control loop.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 This is one of the structural diagrams of the high-voltage relay provided in the embodiment of the present application;

[0025] Figure 2 is an exploded view of a high-voltage relay provided in an embodiment of the present application;

[0026] Figure 3 This is the second structural diagram of the high-voltage relay provided in the embodiment of the present application;

[0027] Figure 4 This is one of the structural schematic diagrams of the temperature-controlled switch device of the high-voltage relay provided in the embodiment of the present application;

[0028] Figure 5 This is the second structural diagram of the temperature-controlled switch device of the high-voltage relay provided in an embodiment of the present application;

[0029] Figure 6 This is the third structural diagram of the high-voltage relay provided in the embodiment of the present application;

[0030] Figure 7 It is a schematic diagram of the circuit structure of the vehicle provided in an embodiment of the present application.

[0031] Reference numerals:

[0032] Housing 100, mounting boss 110, second mounting structure 120,

[0033] Relay body 200, high voltage switch circuit 210, high voltage connection contact 211, low voltage control circuit 220, low voltage connection line 221,

[0034] Temperature control switch device 300, housing 301, temperature sensing element 310, temperature sensing plane 311, switch element 320, low voltage connection contact 321, first mounting plate 330, mounting through hole 331,

[0035] High-voltage components 410 , battery management system 420 . DETAILED DESCRIPTION

[0036] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0037] Reference below Figure 1-Figure 7 A high-voltage relay and a vehicle including the high-voltage relay according to embodiments of the present application are described.

[0038] It should be noted that the high-voltage relay is an automatic switching element with an isolation function, which can be set in a high-voltage circuit. The high-voltage relay can be used to protect the vehicle's battery pack, motor controller, electric compressor, electric heater and other high-voltage components 410.

[0039] The high-voltage relay in the embodiment of the present application can be a fast-charging relay, a pre-charging relay, a main relay, or other relays.

[0040] like Figure 1 As shown, the high-voltage relay of the embodiment of the present application includes a housing 100 , a relay body 200 and a temperature-controlled switch device 300 .

[0041] The housing 100 defines a certain accommodation space, and the relay body 200 is disposed in the accommodation space defined by the housing 100 .

[0042] It can be understood that the relay body 200 is a component in the high-voltage relay that realizes the switching of the high-voltage circuit. The relay body 200 includes a high-voltage switching circuit 210 and a low-voltage control circuit 220. The high-voltage switching circuit 210 and the low-voltage control circuit 220 are connected. The high-voltage switching circuit 210 is used to connect to the high-voltage component 410 of the vehicle.

[0043] In this embodiment, the low voltage control circuit 220 is used to control the on / off state of the high voltage switch circuit 210 . When the high voltage switch circuit 210 is disconnected, the high voltage relay is disconnected, and the high voltage relay cuts off the power supply to the high voltage component 410 .

[0044] In actual implementation, when the high-voltage relay is disconnected, the high-voltage circuit where the high-voltage relay is located is disconnected, and the high-voltage component 410 is powered off; when the high-voltage relay is closed, the high-voltage circuit where the high-voltage relay is located is connected.

[0045] The high-voltage relay includes a temperature-controlled switch device 300 , which is connected to the relay body 200 . The temperature-controlled switch device 300 can detect temperature data and control the on / off state of the relay body 200 according to the detected temperature.

[0046] In this embodiment, the temperature-controlled switch device 300 is installed on the shell 100. The temperature-controlled switch device 300 can detect the temperature of the shell 100. The relay body 200 is arranged in the accommodation space defined by the shell 100. The temperature of the shell 100 reflects the heat generation of the relay body 200 when it is subjected to large current in the high-voltage circuit.

[0047] The temperature-controlled switch device 300 includes a temperature sensing element 310 and a switch element 320 . The temperature sensing element 310 and the switch element 320 are connected. The low-voltage control circuit 220 is connected to the switch element 320 . The temperature sensing element 310 is in contact with the housing 100 .

[0048] The temperature sensing element 310 is used to detect the temperature of the housing 100. Through the connection relationship between the temperature sensing element 310 and the switch element 320, the temperature sensing element 310 can control the switching state of the switch element 320 according to the detected temperature. The low-voltage control circuit 220 is connected to the switch element 320. When the switch element 320 is disconnected, the low-voltage control circuit 220 controls the high-voltage switch circuit 210 to disconnect. When the switch element 320 is closed, the low-voltage control circuit 220 keeps the high-voltage switch circuit 210 connected.

[0049] In this embodiment, when the temperature sampled by the temperature sensing element 310 is greater than or equal to the target temperature threshold, the switch element 320 is turned off, so that the low voltage control circuit 220 controls the high voltage switch circuit 210 to turn off.

[0050] The target temperature threshold is a preset temperature critical value.

[0051] It can be understood that the temperature sensing element 310 is in contact with the housing 100 , and the temperature sampled by the temperature sensing element 310 is the temperature of the housing 100 .

[0052] When the temperature sampled by the temperature sensing element 310 is greater than or equal to the target temperature threshold, the temperature sensing element 310 causes the switch element 320 to disconnect, the low-voltage control circuit 220 in the relay body 200 controls the high-voltage switch circuit 210 to disconnect, the high-voltage relay is in the disconnected state, and the high-voltage component 410 is powered off.

[0053] In this embodiment, the temperature control switch device 300 can be a normally closed thermostat. When the temperature sampled by the temperature sensing element 310 is lower than the target temperature threshold, the switch element 320 can remain in a closed state, the high-voltage switch circuit 210 in the relay body 200 is in a connected state, the high-voltage relay is in a closed state, and the high-voltage component 410 can be powered.

[0054] When the temperature sampled by the temperature sensing element 310 is greater than or equal to the target temperature threshold, the temperature sensing element 310 causes the switch element 320 to disconnect, and the low-voltage control circuit 220 in the relay body 200 controls the high-voltage switch circuit 210 to disconnect. The high-voltage relay is in the disconnected state, and the power supply to the high-voltage component 410 can be cut off.

[0055] In actual implementation, the setting position of the temperature control switch device 300 in the high-voltage relay can be adjusted according to the installation position of the high-voltage relay.

[0056] For example, Figure 1 As shown, there is a certain space on one side of the location where the high-voltage relay is installed, and the temperature-controlled switch device 300 can be arranged on the side plate of the housing 100 .

[0057] It should be noted that the location of the temperature control switch device 300 on the housing 100 and the target temperature threshold corresponding to the temperature sensing element 310 in the temperature control switch device 300 can be adjusted according to the temperature rise characteristics of the installation location of the high-voltage relay.

[0058] For example, a high-voltage relay is installed in a small space near a heat-generating component, where the temperature rises rapidly. The temperature-controlled switch device 300 is disposed on the housing 100 to detect temperature changes in real time. The target temperature threshold corresponding to the temperature-sensing element 310 in the temperature-controlled switch device 300 can be appropriately lowered, and the high-voltage relay can be cut off in time to avoid the problem of heat damage caused by subsequent rapid temperature rise without timely cutting off of the relay.

[0059] According to the high-voltage relay provided in the embodiment of the present application, a temperature-controlled switch device 300 is integrated. The temperature-controlled switch device 300 is connected to the low-voltage control circuit 220 of the high-voltage relay. The temperature-controlled switch device 300 senses the relay temperature in real time. When the temperature sensing element 310 of the temperature-controlled switch device 300 detects that the temperature exceeds the tolerable temperature threshold, the switch element 320 of the temperature-controlled switch device 300 is disconnected, and the low-voltage control circuit 220 of the high-voltage relay disconnects the high-voltage switch circuit 210. Disconnecting the high-voltage relay in time can effectively reduce the risk of heat damage.

[0060] In some embodiments, the housing 100 is provided with a first mounting support, the temperature control switch device 300 is provided with a first mounting structure mounted in cooperation with the first mounting support, and the temperature sensing element 310 and the switch element 320 are fixed to the first mounting structure.

[0061] The first mounting support is a connecting structure provided on the housing 100 , and the first mounting structure is a connecting structure provided on the temperature-controlled switch device 300 . The mating installation between the first mounting support and the first mounting structure can be detachable, so as to facilitate replacement and maintenance of the temperature-controlled switch device 300 .

[0062] In actual implementation, the first mounting support and the first mounting structure can be installed together by connecting means such as bolts, nuts, and snaps.

[0063] For example, the first mounting support has an assembly hole, the temperature control switch device 300 is provided with an assembly hole that cooperates with the first mounting support, and the bolt passes through the two assembly holes to fix the temperature control switch device 300 on the housing 100.

[0064] For another example, the first mounting support is a snap groove, and the temperature control switch device 300 is provided with a snap structure that cooperates with the first mounting support. The snap structure extends into the snap groove and locks, thereby fixing the temperature control switch device 300 on the housing 100.

[0065] In this embodiment, the temperature-controlled switch device 300 may have a shell 301, the temperature sensing element 310 and the switch element 320 are located in the shell 301 and fixed to the first mounting structure. The temperature-controlled switch device 300 can be fixedly installed on the housing 100 through the coordinated installation of the first mounting structure and the first mounting support.

[0066] In some embodiments, the first mounting support includes a mounting boss 110, the first mounting structure includes a first mounting plate 330, the first mounting plate 330 is provided with a mounting through hole 331 corresponding to the mounting boss 110, the first mounting plate 330 is in contact with the mounting boss 110 and is separated from the shell 100, and the first mounting plate 330 is connected to the mounting boss 110 through the mounting through hole 331.

[0067] It can be understood that the shapes and numbers of the mounting bosses 110 and the mounting through holes 331 correspond to each other.

[0068] For example, Figure 3 As shown, the housing 100 is provided with two mounting bosses 110. Figure 4 As shown, the temperature control switch device 300 is provided with a first mounting plate 330 , and the first mounting plate 330 is provided with two mounting through holes 331 corresponding to the mounting boss 110 , and both the mounting boss 110 and the mounting through holes 331 are circular.

[0069] like Figure 6As shown, the mounting boss 110 extends outward relative to the housing 100, the first mounting plate 330 of the temperature-controlled switch device 300 contacts the mounting boss 110, the first mounting plate 330 is spaced apart from the housing 100, and the temperature sensing element 310 is arranged at a position where the temperature-controlled switch device 300 contacts the housing 100.

[0070] In actual implementation, the temperature control switch device 300 can be fixedly installed on the housing 100 by connecting parts such as bolts and screws through the installation through holes 331 of the first installation plate 330, which is simple to install and easy to disassemble and replace.

[0071] It should be noted that the mounting connection structure between the housing 100 and the temperature-controlled switch device 300 is an outwardly protruding mounting boss 110 , which can ensure that there is sufficient space in the housing 100 to accommodate the relay body 200 and is also beneficial to the heat dissipation of the relay body 200 .

[0072] In some embodiments, the temperature sensing surface 311 of the temperature sensing element 310 protrudes relative to a surface of the first mounting plate 330 close to the housing 100 , and the temperature sensing surface 311 contacts the housing 100 .

[0073] like Figure 5 As shown, the temperature sensing surface 311 of the temperature sensing element 310 protrudes relative to the side of the first mounting plate 330 close to the shell 100. The first mounting plate 330 is installed in conjunction with the mounting boss 110. The temperature sensing surface 311 contacts the shell 100 to collect temperature data of the shell 100 in real time.

[0074] It can be understood that the temperature sensing element 310 collects the temperature of the shell 100 by heat conduction. The temperature sensing element 310 is provided with a temperature sensing plane 311 in contact with the shell 100, which can increase the heat conduction area and improve the accuracy of temperature collection. In conjunction with the first mounting plate 330, the temperature control switch device 300 can be firmly installed on the shell 100.

[0075] In some embodiments, the high-voltage switch circuit 210 is provided with a high-voltage connection contact 211 . The high-voltage connection contact 211 is located on the housing 100 . The high-voltage connection contact 211 is connected to the high-voltage component 410 via a high-voltage connection line.

[0076] like Figure 2 As shown, the high-voltage connection contact 211 set on the high-voltage switching circuit 210 is the contact connecting the high-voltage relay and the high-voltage component 410. One end of the high-voltage connection line can be connected to the high-voltage connection contact 211, and the other end of the high-voltage connection line can be connected to the high-voltage component 410 to realize the connection between the high-voltage relay and the high-voltage component 410.

[0077] In actual implementation, the high-voltage connection contact 211 is located on the housing 100 , and the high-voltage relay can be connected to the high-voltage component 410 without disassembling the housing 100 of the high-voltage relay, which facilitates the arrangement and replacement of the relay in the vehicle.

[0078] In some embodiments, low-voltage connection contacts 321 are provided at both ends of the switch element 320 , and the low-voltage control circuit 220 is connected to the low-voltage connection contacts 321 via a low-voltage connection line 221 .

[0079] In this embodiment, the low-voltage connection contacts 321 set at both ends of the switching element 320 are contacts connecting the temperature-controlled switch device 300 and the relay body 200. One end of the low-voltage connection line 221 can be connected to the low-voltage connection contact 321, and the other end of the low-voltage connection line 221 can be connected to the low-voltage control circuit 220.

[0080] It can be understood that the relay body 200 is arranged in the shell 100, one end of the low-voltage connecting wire 221 extends from the shell 100 and is connected to the low-voltage connecting contact 321 of the temperature-controlled switch device 300, and the other end of the low-voltage connecting wire 221 is located in the shell 100 and is connected to the low-voltage control circuit 220 in the shell 100.

[0081] like Figure 4 As shown, the temperature control switch device 300 may include a housing 301, a switch element 320 is arranged in the housing 301, and low-voltage connection contacts 321 arranged at both ends of the switch element 320 are located on the housing 301, which facilitates the connection and replacement of the temperature control switch device 300.

[0082] In some embodiments, the temperature-controlled switch device 300 also includes a transmission element, and the temperature sensing element 310 is connected to the switch element 320 through the transmission element. When the temperature sampled by the temperature sensing element 310 is greater than or equal to the target temperature threshold, the temperature sensing element 310 generates a deformation and is transmitted to the switch element 320 through the transmission element to disconnect the switch element 320.

[0083] In this embodiment, the temperature-controlled switch device 300 is a sudden-type temperature controller. When the temperature sampled by the temperature sensing element 310 is greater than or equal to the target temperature threshold, the temperature sensing element 310 produces a sudden deformation. The sudden deformation is transmitted to the switch element 320 through the transmission element, disconnecting the switch element 320, thereby disconnecting the low-voltage control circuit 220 of the relay body 200.

[0084] In some embodiments, the housing 100 is further provided with a second mounting structure 120 , and the second mounting structure 120 is used to mount the high voltage relay on a vehicle.

[0085] The second mounting structure 120 is a connection structure provided on the housing 100. The high-voltage relay can be installed at various positions of the vehicle through the second mounting structure 120. The installation between the second mounting structure 120 and the vehicle can be detachable, which is convenient for replacing and repairing the high-voltage relay.

[0086] In actual implementation, the second mounting structure 120 can mount the housing 100 on the vehicle by connecting means such as bolts, nuts, and snaps.

[0087] For example, the second mounting structure 120 may be threaded holes on both sides of the housing 100 , and bolts pass through the threaded holes to securely mount the high-voltage relay on the vehicle.

[0088] For another example, the second mounting structure 120 may be a snap-fit ​​structure. A corresponding snap-fit ​​groove is provided on the vehicle. The snap-fit ​​structure extends into the snap-fit ​​groove and is locked, thereby fixing the high-voltage relay on the vehicle.

[0089] It is understandable that the first mounting support and the second mounting structure 120 are connection structures provided on the housing 100 . These connection structures may be integrally formed with the housing 100 , or may be fixed to the housing 100 via connectors.

[0090] An embodiment of the present application also provides a vehicle.

[0091] The vehicle includes: at least one high-voltage relay as described above and at least one high-voltage component 410 , and the high-voltage component 410 is connected to the high-voltage relay in a one-to-one correspondence.

[0092] In this embodiment, a high-voltage relay is correspondingly provided for each high-voltage component 410 , and the high-voltage relay is used to protect the operation of the high-voltage component 410 .

[0093] For example, Figure 7 As shown, the high-voltage component 410 is a battery pack, which is connected to the relay body 200 of the high-voltage relay. The relay body 200 is arranged in the housing 100, and the temperature control switch device 300 of the high-voltage relay is arranged on the housing 100.

[0094] When the temperature sampled by the temperature sensing element 310 of the temperature-controlled switch device 300 is greater than or equal to the target temperature threshold, the switch element 320 is disconnected, and the low-voltage control circuit 220 in the relay body 200 controls the high-voltage switch circuit 210 to disconnect. The high-voltage relay is in the disconnected state, and the power supply to the high-voltage component 410 can be cut off.

[0095] In actual implementation, high-voltage relays may be set at different locations in the vehicle according to different high-voltage components 410 , and a corresponding target temperature threshold may be set for each high-voltage relay.

[0096] According to the vehicle provided in the embodiment of the present application, a temperature-controlled switch device 300 is integrated into the high-voltage relay. The temperature-controlled switch device 300 is connected to the low-voltage control circuit 220. The temperature-controlled switch device 300 senses the relay temperature in real time. When the temperature-controlled switch device 300 detects that the temperature exceeds the tolerable temperature threshold, the low-voltage control circuit 220 controls the high-voltage switch circuit 210 to disconnect, and disconnects the high-voltage relay in time, which can effectively reduce the risk of heat damage.

[0097] In some embodiments, the vehicle further includes a battery management system 420 (BMS).

[0098] Among them, the battery management system 420 can monitor the battery status of the vehicle's battery pack to ensure the safe, reliable and efficient operation of the battery system.

[0099] In this embodiment, the low-voltage control circuit 220 of the high-voltage relay is connected to the switch element 320 to form a low-voltage control loop, and the battery management system 420 is disposed in the low-voltage control loop.

[0100] like Figure 7 As shown, the battery management system 420 is arranged in the low-voltage control circuit 220 and connected to the switching element 320 to form a low-voltage control loop. The battery management system 420 can control the on-off state of the high-voltage relay through the low-voltage control circuit 220. The battery management system 420 can realize the on-off control of all high-voltage relays in the vehicle's high-voltage system.

[0101] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0102] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0103] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0104] In the description of this application, “plurality” means two or more.

[0105] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0106] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0107] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0108] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A high voltage relay, characterized in that: include: case; a relay body, the relay body being disposed within the accommodation space defined by the housing, the relay body comprising a high-voltage switching circuit and a low-voltage control circuit, the high-voltage switching circuit being connected to the low-voltage control circuit, the high-voltage switching circuit being configured to connect to a high-voltage component of a vehicle, and the low-voltage control circuit being configured to control the on / off state of the high-voltage switching circuit; A temperature-controlled switch device is installed on the housing, and includes a temperature-sensitive element and a switch element. The temperature-sensitive element and the switch element are connected, the low-voltage control circuit is connected to the switch element, and the temperature-sensitive element is in contact with the housing. When the temperature sampled by the temperature-sensitive element is greater than or equal to the target temperature threshold, the switch element is disconnected, so that the low-voltage control circuit controls the high-voltage switch circuit to disconnect.

2. The high voltage relay according to claim 1, characterized in that: The housing is provided with a first mounting support, the temperature-controlled switch device is provided with a first mounting structure mounted in cooperation with the first mounting support, and the temperature sensing element and the switch element are fixed to the first mounting structure.

3. The high voltage relay according to claim 2, characterized in that: The first mounting support includes a mounting boss, the first mounting structure includes a first mounting plate, the first mounting plate is provided with a mounting through hole corresponding to the mounting boss, the first mounting plate is in contact with the mounting boss and is spaced apart from the shell, and the first mounting plate is connected to the mounting boss through the mounting through hole.

4. The high voltage relay according to claim 3, characterized in that: The temperature sensing plane of the temperature sensing element protrudes relative to a surface of the first mounting plate close to the housing, and the temperature sensing plane contacts the housing.

5. The high voltage relay according to claim 1, characterized in that: The high-voltage switch circuit is provided with a high-voltage connection contact, the high-voltage connection contact is located on the housing, and the high-voltage connection contact is connected to the high-voltage component through a high-voltage connection line.

6. The high voltage relay according to claim 1, characterized in that: Low-voltage connection contacts are provided at both ends of the switch element, and the low-voltage control circuit is connected to the low-voltage connection contacts via a low-voltage connection line.

7. The high voltage relay according to any one of claims 1 to 5, characterized in that: The temperature-controlled switch device also includes a transmission element, and the temperature sensing element is connected to the switch element through the transmission element. When the temperature sampled by the temperature sensing element is greater than or equal to the target temperature threshold, the temperature sensing element generates deformation and is transmitted to the switch element through the transmission element to disconnect the switch element.

8. The high voltage relay according to any one of claims 1 to 5, characterized in that: The housing is further provided with a second mounting structure, and the second mounting structure is used to mount the high-voltage relay on the vehicle.

9. A vehicle, characterized in that: include: At least one high voltage relay according to any one of claims 1 to 8; At least one high-voltage component is connected to the high-voltage relay in a one-to-one correspondence.

10. The vehicle according to claim 9, characterized in that Also includes: A battery management system, wherein the low-voltage control circuit of the high-voltage relay is connected to the switch element to form a low-voltage control loop, and the battery management system is arranged in the low-voltage control loop.

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