Relay, battery pack and vehicle

Abstract

The invention discloses a relay, a battery pack and a vehicle. The relay comprises a first pole, a plurality of second poles and a plurality of movable contact plates, the plurality of movable contact plates correspond to the plurality of second poles respectively, and the plurality of movable contact plates are used for controlling the on-off state between the first pole and the plurality of second poles respectively so as to control the working state of the relay. Therefore, the number of relays in the battery pack can be reduced, the space occupied by the relays in the battery pack is reduced, and the cost can be reduced.

Description

Technical Field

[0001] The present application relates to the field of electrical control technology, and in particular to a relay, a battery pack and a vehicle. Background Art

[0002] As an important basic component in the field of electrical control, relays not only realize the switch control of circuits, but also provide reliable signal conversion and protection for complex systems. At present, relays are one-in-one-out relays. If there are multiple power circuits in the battery pack, each power circuit needs to use a relay, which will take up a large space in the battery pack. Summary of the invention

[0003] The embodiments of the present application provide a relay, a battery pack and a vehicle to solve at least one of the above-mentioned technical problems.

[0004] The relay of the embodiment of the present application includes a first pole, multiple second poles and multiple moving touch plates, the multiple moving touch plates respectively correspond to the multiple second poles, and the multiple moving touch plates are used to respectively control the on-off state between the first pole and the multiple second poles to control the working state of the relay.

[0005] In some embodiments, when each of the movable touch plates is connected to the first pole and a corresponding one of the second poles, the first pole is electrically connected to the corresponding one of the second poles;

[0006] When each of the movable contact plates is spaced apart from the first pole and a corresponding one of the second poles, the first pole is disconnected from the corresponding one of the second poles.

[0007] In some embodiments, the relay further includes a plurality of working components corresponding to the plurality of moving contact pads, and the plurality of working components are used to control the positions of the plurality of moving contact pads respectively.

[0008] In some embodiments, each of the working components includes an iron core and a coil. When the coil is energized, it cooperates with the iron core to generate a magnetic field, driving a corresponding one of the moving touch plates to connect with or be spaced apart from the first pole and a corresponding one of the second poles.

[0009] The battery pack according to the embodiment of the present application includes the relay according to any one of the above embodiments.

[0010] In some embodiments, the battery pack further includes a battery cell and a high-voltage interface, and the relay is connected between the battery cell and the high-voltage interface via a copper busbar to control the transmission of electrical energy between the battery cell and the high-voltage interface.

[0011] In certain embodiments, the battery pack further includes a battery management module, which is connected to the relay and is used to control power supply to multiple working components of the relay.

[0012] In some embodiments, the battery cell includes a battery cell positive electrode and a battery cell negative electrode, the high-voltage interface includes a first high-voltage interface, the first high-voltage interface is respectively connected to the battery cell positive electrode and the battery cell negative electrode, and the relay includes a first relay, the first relay is connected between the battery cell positive electrode and the first high-voltage interface;

[0013] The first pole of the first relay is connected to any number of the second poles to control the transmission of electric energy between the positive pole of the battery cell and the first high-voltage interface.

[0014] In some embodiments, the battery cell includes a battery cell positive electrode and a battery cell negative electrode, the high-voltage interface includes a first high-voltage interface and a second high-voltage interface, the first high-voltage interface is respectively connected to the battery cell positive electrode and the battery cell negative electrode, the second high-voltage interface is respectively connected to the battery cell positive electrode and the battery cell negative electrode, the relay includes a second relay, the first pole of the second relay is connected to the battery cell positive electrode, and the plurality of second poles of the second relay are respectively connected to the first high-voltage interface and the second high-voltage interface;

[0015] The first pole of the second relay is connected to any number of the second poles to control the transmission of electric energy between the positive pole of the battery cell and the first high-voltage interface and the second high-voltage interface.

[0016] In some embodiments, the battery cell includes a battery cell positive electrode and a battery cell negative electrode, the high-voltage interface includes a first high-voltage interface and a second high-voltage interface, the first high-voltage interface is respectively connected to the battery cell positive electrode and the battery cell negative electrode, the second high-voltage interface is respectively connected to the battery cell positive electrode and the battery cell negative electrode, the relay includes a third relay, the first pole of the third relay is connected to the battery cell negative electrode, and the plurality of second poles of the third relay are respectively connected to the first high-voltage interface and the second high-voltage interface;

[0017] The first pole of the third relay is connected to any number of the second poles to control the transmission of electric energy between the negative pole of the battery cell and the first high-voltage interface and the second high-voltage interface.

[0018] The vehicle according to the embodiment of the present application includes the battery pack according to any of the above embodiments.

[0019] In the relay, battery pack and vehicle of the embodiment of the present application, the plurality of movable touch pads correspond to the plurality of second poles respectively, and the plurality of movable touch pads respectively control the on-off state between the first pole and the plurality of second poles to control the working state of the relay. In this way, the number of relays in the battery pack can be reduced, thereby reducing the space occupied by the relays in the battery pack and reducing the cost.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. Among them:

[0022] Figure 1 is a schematic diagram of the structure of a battery pack according to certain embodiments of the present application;

[0023] Figure 2 is a schematic diagram of the working state of a relay including two second poles in certain embodiments of the present application;

[0024] Figure 3 is a schematic diagram of the working state of a relay including two second poles in certain embodiments of the present application;

[0025] Figure 4 is a schematic diagram of the working state of a relay including two second poles in certain embodiments of the present application;

[0026] Figure 5 is a schematic diagram of the working state of a relay including two second poles in certain embodiments of the present application;

[0027] Figure 6 is a schematic structural diagram of a relay including three second poles according to certain embodiments of the present application;

[0028] Figure 7 is a schematic diagram of the structure of a battery pack of the related art;

[0029] Figure 8 is a schematic diagram of the structure of a battery pack according to certain embodiments of the present application;

[0030] Fig. 9 is a schematic diagram of the structure of a battery pack according to certain embodiments of the present application;

[0031] Fig.10is a schematic diagram of the structure of a battery pack according to certain embodiments of the present application;

[0032] Fig.11 It is a schematic diagram of the structure of a vehicle of certain embodiments of the present application.

[0033] Description of reference numerals:

[0034] Relay 100, first pole 10, second pole 20, first sub-pole 21, second sub-pole 22, third sub-pole 23, fourth sub-pole 24, fifth sub-pole 25, moving touch pad 30, first moving touch pad 31, second moving touch pad 32, third moving touch pad 33, fourth moving touch pad 34, fifth moving touch pad 35, working component 40, iron core 41, coil 42, first relay 110, second relay 120, third relay 130, battery pack 200, battery cell 210, high voltage interface 220, first high voltage interface 221, second high voltage interface 222, vehicle 1000. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0036] See also Figure 1 , an embodiment of the present application provides a battery pack 200 . The battery pack 200 includes a relay 100 .

[0037] See also Figures 2 to 5 The embodiment of the present application also provides a relay 100. The relay 100 includes a first pole 10, a plurality of second poles 20, and a plurality of moving touch pads 30. The plurality of moving touch pads 30 correspond to the plurality of second poles 20, respectively. The plurality of moving touch pads 30 are used to control the on-off state between the first pole 10 and the plurality of second poles 20, respectively, so as to control the working state of the relay 100.

[0038] In the relay 100 of the embodiment of the present application, the plurality of movable contact plates 30 respectively correspond to the plurality of second poles 20, and the plurality of movable contact plates 30 respectively control the on-off state between the first pole 10 and the plurality of second poles 20 to control the working state of the relay 100. In this way, the number of relays 100 in the battery pack 200 can be reduced, thereby reducing the space occupied by the relays 100 in the battery pack 200, and also reducing the cost.

[0039] Specifically, a relay 100 may include two or more second poles 20, for example, the number of the second poles 20 may be 2, 3, 4 or more. A relay 100 may include two or more movable contact plates 30, for example, the number of the movable contact plates 30 may be 2, 3, 4 or more. The number of the plurality of second poles 20 is equal to the number of the plurality of movable contact plates 30, and each second pole 20 corresponds to one movable contact plate 30. Figure 2 As shown, the relay 100 may include two second poles 20 and two moving contact plates 30. Figure 6 As shown, the relay 100 may include three second poles 20 and three moving contact plates 30 .

[0040] The first pole 10 can be the inlet pole of the relay 100, and correspondingly, the plurality of second poles 20 are the outlet poles of the relay 100. Of course, the first pole 10 can be the outlet pole of the relay 100, and correspondingly, the plurality of second poles 20 are the inlet poles of the relay 100.

[0041] When the relay 100 is working, the first pole 10 and the plurality of second poles 20 remain stationary, and the plurality of movable contact plates 30 can move in a predetermined manner to respectively control the on / off state between the first pole 10 and the plurality of second poles 20, thereby controlling the working state of the relay 100.

[0042] Taking the relay 100 including two second poles 20 as an example, for the convenience of distinction, the two second poles 20 are respectively named as the first sub-pole 21 and the second sub-pole 22, and the plurality of movable contact plates 30 include the first movable contact plate 31 and the second movable contact plate 32. When the first pole 10 is an inlet pole and the two second poles 20 are outlet poles, the relay 100 includes four working states.

[0043] The first working state is Figure 2 As shown, the first moving contact plate 31 controls the conduction between the first pole 10 and the first sub-pole 21, and the second moving contact plate 32 controls the conduction between the first pole 10 and the second sub-pole 22. Both the first sub-pole 21 and the second sub-pole 22 of the relay 100 output.

[0044] The second working state is Figure 3 As shown, the first moving contact plate 31 controls the conduction between the first pole 10 and the first sub-pole 21, and the second moving contact plate 32 controls the disconnection between the first pole 10 and the second sub-pole 22. The first sub-pole 21 of the relay 100 outputs one way.

[0045] The third working state is Figure 4As shown, the first moving contact plate 31 controls the disconnection between the first pole 10 and the first sub-pole 21, and the second moving contact plate 32 controls the conduction between the first pole 10 and the second sub-pole 22. The second sub-pole 22 of the relay 100 outputs one way.

[0046] The fourth working state is as follows Figure 5 As shown, the first moving contact plate 31 controls the disconnection between the first pole 10 and the first sub-pole 21, and the second moving contact plate 32 controls the disconnection between the first pole 10 and the second sub-pole 22. The first sub-pole 21 and the second sub-pole 22 of the relay 100 do not output.

[0047] Taking the relay 100 including three second poles 20 as an example, for the convenience of distinction, the three second poles 20 are respectively named as the third sub-pole 23, the fourth sub-pole 24 and the second sub-pole 22, and the plurality of movable contact plates 30 include the third movable contact plate 33, the fourth movable contact plate 34 and the fifth movable contact plate 35. When the first pole 10 is the inlet pole and the three second poles 20 are the outlet poles, the relay 100 includes 8 working states.

[0048] In the first working state, the third moving contact plate 33 controls the conduction between the first pole 10 and the third sub-pole 23; the fourth moving contact plate 34 controls the conduction between the first pole 10 and the fourth sub-pole 24; the fifth moving contact plate 35 controls the conduction between the first pole 10 and the fifth sub-pole 25. The third sub-pole 23, the fourth sub-pole 24 and the fifth sub-pole 25 of the relay 100 all output.

[0049] In the second working state, the third moving contact plate 33 controls the conduction between the first pole 10 and the third sub-pole 23; the fourth moving contact plate 34 controls the conduction between the first pole 10 and the fourth sub-pole 24; the fifth moving contact plate 35 controls the disconnection between the first pole 10 and the fifth sub-pole 25. The third sub-pole 23 and the fourth sub-pole 24 of the relay 100 output in two ways.

[0050] In the third working state, the third moving contact plate 33 controls the connection between the first pole 10 and the third sub-pole 23; the fourth moving contact plate 34 controls the disconnection between the first pole 10 and the fourth sub-pole 24; the fifth moving contact plate 35 controls the connection between the first pole 10 and the fifth sub-pole 25. The third sub-pole 23 and the fifth sub-pole 25 of the relay 100 output in two ways.

[0051] In the fourth working state, the third moving contact plate 33 controls the disconnection between the first pole 10 and the third sub-pole 23; the fourth moving contact plate 34 controls the conduction between the first pole 10 and the fourth sub-pole 24; the fifth moving contact plate 35 controls the conduction between the first pole 10 and the fifth sub-pole 25. The fourth sub-pole 24 and the fifth sub-pole 25 of the relay 100 output in two ways.

[0052] In the fifth working state, the third moving contact plate 33 controls the connection between the first pole 10 and the third sub-pole 23; the fourth moving contact plate 34 controls the disconnection between the first pole 10 and the fourth sub-pole 24; the fifth moving contact plate 35 controls the disconnection between the first pole 10 and the fifth sub-pole 25. The third sub-pole 23 of the relay 100 outputs all the way.

[0053] In the sixth working state, the third moving contact plate 33 controls the disconnection between the first pole 10 and the third sub-pole 23; the fourth moving contact plate 34 controls the conduction between the first pole 10 and the fourth sub-pole 24; the fifth moving contact plate 35 controls the disconnection between the first pole 10 and the fifth sub-pole 25. The fourth sub-pole 24 of the relay 100 outputs all the way.

[0054] In the seventh working state, the third moving contact plate 33 controls the disconnection between the first pole 10 and the third sub-pole 23; the fourth moving contact plate 34 controls the disconnection between the first pole 10 and the fourth sub-pole 24; the fifth moving contact plate 35 controls the connection between the first pole 10 and the fifth sub-pole 25. The fifth sub-pole 25 of the relay 100 outputs all the way.

[0055] In the eighth working state, the third moving contact plate 33 controls the disconnection between the first pole 10 and the third sub-pole 23; the fourth moving contact plate 34 controls the disconnection between the first pole 10 and the fourth sub-pole 24; the fifth moving contact plate 35 controls the disconnection between the first pole 10 and the fifth sub-pole 25. The third sub-pole 23, the fourth sub-pole 24 and the fifth sub-pole 25 of the relay 100 do not output.

[0056] In related technologies, such as Figure 7 As shown, multiple power circuits are formed in the battery pack. The power circuits are provided with an expansion positive relay, a main positive relay, a pre-charge relay, a main negative relay and a fast charge negative relay, and 5 one-in-one-out relays are required.

[0057] In the embodiment of the present application, the relay 100 is set as a one-input multiple-output type or a multiple-input one-output type, and multiple second poles 20 are set under a relay 100 housing, sharing a first pole 10 and a fixed pin of the relay 100 corresponding to the first pole, thereby reducing the cost of the relay 100 itself. The working state of the relay 100 can be controlled by multiple moving touch pads 30, and one relay 100 can replace at least two one-input one-output relays, so that when the battery pack 200 includes multiple power circuits, the use of at least one relay 100 can be reduced. In this way, the number of relays 100 in the battery pack 200 is reduced, the overall cost of the battery pack 200 is reduced, and the space occupied by the relay 100 in the battery pack 200 can also be reduced.

[0058] See also Figures 2 to 5In some embodiments, when each moving contact plate 30 is connected to the first pole 10 and the corresponding second pole 20, the first pole 10 is connected to the corresponding second pole 20. When each moving contact plate 30 is separated from the first pole 10 and the corresponding second pole 20, the first pole 10 is disconnected from the corresponding second pole 20.

[0059] Specifically, each movable contact plate 30 includes two opposite ends along the length direction, one end is used to connect to the first pole 10 , and the other end is used to connect to a corresponding second pole 20 .

[0060] Take the relay 100 including two second poles 20 as an example. Figure 2 As shown, when one end of the first moving contact plate 31 is connected to the first pole 10 and the other end is connected to the first sub-pole 21, the first pole 10 and the first sub-pole 21 are connected; when one end of the first moving contact plate 31 is disconnected from the first pole 10 and the other end is disconnected from the first sub-pole 21, the first pole 10 and the first sub-pole 21 are disconnected.

[0061] When one end of the second moving contact plate 32 is connected to the first pole 10 and the other end is connected to the second sub-pole 22, the first pole 10 and the second sub-pole 22 are connected; when one end of the second moving contact plate 32 is disconnected from the first pole 10 and the other end is disconnected from the second sub-pole 22, the first pole 10 and the second sub-pole 22 are disconnected.

[0062] It can be understood that when one end of the movable contact plate 30 is not connected to any pole, the first pole 10 is disconnected from a corresponding second pole 20 .

[0063] See also Figure 2 and Figure 6 In some embodiments, the relay 100 further includes a plurality of working components 40 corresponding to the plurality of moving contact pads 30. The plurality of working components 40 are used to control the positions of the plurality of moving contact pads 30 respectively.

[0064] Specifically, the number of the working components 40 is equal to the number of the moving touch pads 30, that is, equal to the number of the second poles 20. The working components 40 are arranged on a side of the moving touch pad 30 away from the second pole 20. The plurality of working components 40 are used to respectively control the positions of the plurality of moving touch pads 30, so as to control the plurality of moving touch pads 30 to be connected with the first pole 10 and the corresponding plurality of second poles 20.

[0065] See also Figure 2 and Figure 6 In some embodiments, each working assembly 40 includes an iron core 41 and a coil 42. When the coil 42 is energized, it cooperates with the iron core 41 to generate a magnetic field, driving a corresponding moving contact plate 30 to be connected to or spaced from the first pole 10 and the corresponding second pole 20.

[0066] Specifically, each working component 40 may include an iron core 41 and a coil 42, and the coil 42 is disposed around the iron core 41. When the coil 42 is energized, the coil 42 generates a magnetic field, and the iron core 41 is magnetized by the magnetic field generated by the coil 42. The magnetized iron core 41 becomes a magnet, and the magnetic field of the coil 42 is superimposed on the magnetic field of the iron core 41 to obtain a stronger magnetic field.

[0067] The magnetic field generated by the iron core 41 and the coil 42 generates a force on the movable touch plate 30, which can drive a corresponding movable touch plate 30 to be connected to or spaced from the first pole 10 and the corresponding second pole 20. For example, the initial position of the movable touch plate 30 can be set to be spaced from the first pole 10 and the corresponding second pole 20. When a positive current is passed through the coil 42, it cooperates with the iron core 41 to generate a magnetic field, driving a corresponding movable touch plate 30 to be connected to the first pole 10 and the corresponding second pole 20; when the coil 42 is stopped from being energized, the magnetic field disappears, the force on the movable touch plate 30 disappears, and the movable touch plate 30 is reset to the initial position, spaced from the first pole 10 and the corresponding second pole 20.

[0068] In this way, by energizing or de-energizing the coil 42 , a corresponding moving contact plate 30 can be controlled to be connected to or separated from the first pole 10 and a corresponding second pole 20 , so as to control the working state of the relay 100 .

[0069] Of course, the initial position of the movable touch plate 30 can also be set to be connected to the first pole 10 and the corresponding second pole 20. When the reverse current is passed through the coil 42, it cooperates with the iron core 41 to generate a magnetic field, driving the corresponding movable touch plate 30 to be separated from the first pole 10 and the corresponding second pole 20; when the coil 42 is stopped from being energized, the magnetic field disappears, the force acting on the movable touch plate 30 disappears, and the movable touch plate 30 is reset to the initial position, connecting with the first pole 10 and the corresponding second pole 20.

[0070] In this way, by energizing or de-energizing the coil 42 , a corresponding moving contact plate 30 can be controlled to be spaced apart from or connected to the first pole 10 and a corresponding second pole 20 , so as to control the working state of the relay 100 .

[0071] See also Figure 1 The embodiment of the present application further provides a battery pack 200. The battery pack 200 includes the relay 100 of any of the above embodiments.

[0072] Specifically, a battery pack 200 may include one or more relays 100. The relay 100 is configured as a one-input multiple-output type or a multiple-input one-output type. When the battery pack 200 includes multiple power circuits, the use of at least one relay 100 can be reduced.

[0073] In this way, the number of relays 100 in the battery pack 200 is reduced, the overall cost of the battery pack 200 is reduced, and the space occupied by the relays 100 in the battery pack 200 can be reduced, which facilitates the design and layout of the interior of the battery pack 200.

[0074] See also Figure 1 In some embodiments, the battery pack 200 further includes a battery cell 210 and a high voltage interface 220 , and the relay 100 is connected between the battery cell 210 and the high voltage interface 220 through a copper busbar to control the transmission of electrical energy between the battery cell 210 and the high voltage interface 220 .

[0075] Specifically, the number of the battery cells 210 is multiple. There is no limit on the number of high-voltage interfaces 220. For example, the number of high-voltage interfaces 220 may be 1, 2, 3 or more. The relay 100 is connected between the battery cell 210 and the high-voltage interface 220 through a copper busbar, and a power circuit is formed between the battery cell 210 and the high-voltage interface 220. Electric energy is transmitted through the copper busbar. The relay 100 is used to control the electric energy transmission between the battery cell 210 and the high-voltage interface 220.

[0076] For example, when the first pole 10 of the relay 100 is connected to one of the second poles 20 , a power circuit corresponding to the second pole 20 is connected, and the battery cell 210 and the high-voltage interface 220 can transmit electric energy through the power circuit.

[0077] See also Figure 1 In some embodiments, the battery pack 200 further includes a battery management module (not shown), which is connected to the relay 100 and is used to control the power supply to the multiple working components 40 of the relay 100 .

[0078] Specifically, the battery management module can control the power supply to the multiple working components 40 of the relay 100, specifically, control the power supply to the multiple coils 42. The battery management module controls the working state of the relay 100 by controlling the power supply to the multiple coils 42 respectively, and further controls the power transmission between the battery cell 210 of the battery pack 200 and the high voltage interface 220.

[0079] The battery management module can determine whether it is necessary to turn on a power circuit of the battery pack 200. When the power circuit needs to be turned on, it controls the power supply to a corresponding working component 40 to turn on the power circuit, so that electric energy can be transmitted between the battery cell 210 and the high-voltage interface 220 through the power circuit.

[0080] Combine the following Figure 1 , Figures 8 to 10 The relay 100 of the embodiment of the present application is described in detail. Figure 7The battery pack 200 shown is a structure of the battery pack 200 .

[0081] It should be noted that in Figure 7 In the battery pack 200 shown, when the battery pack 200 is discharged, the main positive relay and the main negative relay are turned on, and the fast charge positive relay and the fast charge negative relay are turned off; the pre-charge relay is used to protect the battery pack 200 at the beginning of discharge, and is only turned on at the beginning of discharge and remains turned off afterwards. The pre-charge resistor is used to limit the current.

[0082] When the battery pack 200 is charged, the fast charge positive relay and the fast charge negative relay are turned on, and the main positive relay and the main negative relay are turned off; the pre-charge relay is used to protect the battery pack 200 at the beginning of charging, and is only turned on at the beginning of charging and then disconnected.

[0083] See also Figure 1 In some embodiments, the battery cell 210 includes a positive electrode and a negative electrode. The high-voltage interface 220 includes a first high-voltage interface 221, which is connected to the positive electrode and the negative electrode of the battery cell respectively. The relay 100 includes a first relay 110, which is connected between the positive electrode of the battery cell and the first high-voltage interface 221. The first pole 10 of the first relay 110 is connected to any number of second poles 20 to control the transmission of power between the positive electrode of the battery cell and the first high-voltage interface 221.

[0084] Specifically, taking the first relay 110 including two second poles 20 as an example, Figure 1 and Figure 7 , the first relay 110 is used to replace the main positive relay and the pre-charge relay. At this time, the battery pack 200 includes a total of 4 relays 100. The first pole 10 is connected to the import pin, and thus connected to the positive electrode of the battery cell through the copper bus; the first sub-pole 21 is connected to the main positive circuit pin, and the second sub-pole 22 is connected to the pre-charge circuit pin, thereby connecting to the first high-voltage interface 221.

[0085] Alternatively, the first pole 10 is connected to the outlet pin, and thus connected to the first high-voltage interface 221 through the copper bus; the first sub-pole 21 is connected to the main positive circuit pin, and the second sub-pole 22 is connected to the pre-charging circuit pin, and thus connected to the positive electrode of the battery cell.

[0086] like Figure 1 As shown, taking the first pole 10 being connected to the positive electrode of the battery cell through a copper busbar as an example, when the battery pack 200 is discharged, the first moving contact plate 31 in the first relay 110 is connected to the first pole 10 and the first sub-pole 21, and the first pole 10 is conductively connected to the first sub-pole 21, that is, the positive electrode of the battery cell is conductively connected to the main positive circuit pin; the main negative relay is also conductive, then the main positive circuit and the main negative circuit are both conductive, and the battery cell 210 discharges to the external load through the first high-voltage interface 221.

[0087] At the beginning of discharge, the second moving contact plate 32 of the first relay 110 is connected to the first pole 10 and the second sub-pole 22, and the first pole 10 and the second sub-pole 22 are connected, that is, the positive pole of the battery cell and the pre-charge circuit pin are connected, protecting the battery pack 200, and then it is in a disconnected state. The fast charge positive relay and the fast charge negative relay are both disconnected.

[0088] The high voltage interface 220 further includes a second high voltage interface 222 , which is connected to the positive electrode of the battery cell and the negative electrode of the battery cell respectively.

[0089] When the battery pack 200 is charged, the fast charge positive relay and the fast charge negative relay are both turned on, the fast charge positive circuit and the fast charge negative circuit are both turned on, and the external power supply charges the battery cell 210 through the second high voltage interface 222 .

[0090] At the beginning of charging, the second moving contact plate 32 in the first relay 110 is connected to the first pole 10 and the second sub-pole 22, and the first pole 10 and the second sub-pole 22 are conductive, that is, the positive pole of the battery cell and the pre-charging circuit pin are conductive, protecting the battery pack 200, and then disconnected.

[0091] The first moving contact plate 31 in the first relay 110 is spaced from the first pole 10 and the first sub-pole 21 , and the first pole 10 is disconnected from the first sub-pole 21 , that is, the positive pole of the battery cell is disconnected from the main positive circuit pin; the main negative relay is also disconnected.

[0092] In this way, the main positive relay and the pre-charging relay can share a relay 100 housing and a fixed pin of the relay 100 (corresponding to the first pole 10), thereby sharing one imported copper busbar wiring, reducing the use of one copper busbar, reducing the use of one relay 100, and thereby reducing the space occupied in the battery pack 200.

[0093] See also Figure 8 In some embodiments, the battery cell 210 includes a positive electrode and a negative electrode. The high-voltage interface 220 includes a first high-voltage interface 221 and a second high-voltage interface 222. The first high-voltage interface 221 is connected to the positive electrode and the negative electrode of the battery cell, respectively, and the second high-voltage interface 222 is connected to the positive electrode and the negative electrode of the battery cell, respectively. The relay 100 includes a second relay 120, the first pole 10 of the second relay 120 is connected to the positive electrode of the battery cell, and the multiple second poles 20 of the second relay 120 are respectively connected to the first high-voltage interface 221 and the second high-voltage interface 222. The first pole 10 of the second relay 120 is connected to any number of second poles 20 to control the transmission of power between the positive electrode of the battery cell and the first high-voltage interface 221 and the second high-voltage interface 222.

[0094] Specifically, taking the second relay 120 including two second poles 20 as an example, Figure 1 and Figure 8 , the second relay 120 is used to replace the main positive relay and the fast charge positive relay. The first pole 10 is connected to the import pin, and then connected to the positive electrode of the battery cell through the copper bar, the first sub-pole 21 is connected to the main positive circuit pin, and then connected to the first high-voltage interface 221, and the second sub-pole 22 is connected to the fast charge positive circuit pin, and then connected to the second high-voltage interface 222. At this time, the battery pack 200 includes a total of 4 relays 100.

[0095] When the battery pack 200 is discharging, the first moving contact plate 31 in the second relay 120 is connected to the first pole 10 and the first sub-pole 21, and the first pole 10 and the first sub-pole 21 are conductive, that is, the positive pole of the battery cell and the main positive circuit pin are conductive; the main negative relay is also conductive, then the main positive circuit and the main negative circuit are both conductive, and the battery cell 210 discharges to the external load through the first high-voltage interface 221.

[0096] At the beginning of discharge, the pre-charge relay is turned on to protect the battery pack 200, and then disconnected. The second moving contact plate 32 of the second relay 120 is spaced from the first pole 10 and the second sub-pole 22, and the first pole 10 is disconnected from the second sub-pole 22, that is, the positive pole of the battery cell is disconnected from the fast charge positive circuit pin; the fast charge negative relay is also disconnected.

[0097] When the battery pack 200 is charging, the second moving contact plate 32 in the second relay 120 is connected to the first pole 10 and the second sub-pole 22, and the first pole 10 and the second sub-pole 22 are conductive, that is, the positive pole of the battery cell and the fast charging positive circuit pin are conductive; the fast charging negative relay is also conductive, then the fast charging positive circuit and the fast charging negative circuit are both conductive, and the external power supply charges the battery cell 210 through the second high voltage interface 222.

[0098] At the beginning of charging, the pre-charge relay is turned on to protect the battery pack 200, and then disconnected. The first moving contact plate 31 of the second relay 120 is spaced from the first pole 10 and the first sub-pole 21, and the first pole 10 is disconnected from the first sub-pole 21, that is, the positive pole of the battery cell is disconnected from the main positive circuit pin, and the main negative relay is also disconnected.

[0099] In this way, the main positive relay and the fast charging positive relay can share a relay 100 housing and a relay 100 fixed pin (corresponding to the first pole 10), thereby sharing one imported copper busbar wiring, reducing the use of one copper busbar, reducing the use of one relay 100, and thereby reducing the space occupied in the battery pack 200.

[0100] In some examples, the second relay 120 includes three second poles 20, and the second relay 120 is used to replace the main positive relay, the pre-charge relay, and the fast charge positive relay. The first pole 10 is connected to the import pin, and is connected to the positive electrode of the battery cell through the copper bus; the third sub-pole 23 is connected to the main positive circuit pin, the fourth sub-pole 24 is connected to the pre-charge circuit pin, and then connected to the first high-voltage interface 221; the fifth sub-pole 25 is connected to the fast charge positive circuit pin, and then connected to the second high-voltage interface 222. At this time, the battery pack 200 includes a total of three relays 100.

[0101] The first pole 10 of the second relay 120 can be connected to any number of second poles 20 to control the transmission of power between the positive pole of the battery cell and the first high-voltage interface 221 and the second high-voltage interface 222. In this way, the main positive relay, the pre-charge relay and the fast-charge positive relay can share a relay 100 housing and a relay 100 fixed pin (corresponding to the first pole 10), thereby sharing one imported copper busbar wiring, reducing the use of two copper busbars, reducing the use of two relays 100, and thus reducing the space occupied in the battery pack 200.

[0102] See also Fig. 9 and Fig.10 In some embodiments, the battery cell 210 includes a positive electrode and a negative electrode. The high-voltage interface 220 includes a first high-voltage interface 221 and a second high-voltage interface 222. The first high-voltage interface 221 is connected to the positive electrode and the negative electrode of the battery cell, respectively, and the second high-voltage interface 222 is connected to the positive electrode and the negative electrode of the battery cell, respectively. The relay 100 includes a third relay 130, the first pole 10 of the third relay 130 is connected to the negative electrode of the battery cell, and the multiple second poles 20 of the third relay 130 are respectively connected to the first high-voltage interface 221 and the second high-voltage interface 222. The first pole 10 of the third relay 130 is connected to any number of second poles 20 to control the transmission of power between the negative electrode of the battery cell and the first high-voltage interface 221 and the second high-voltage interface 222.

[0103] Specifically, taking the third relay 130 including two second poles 20 as an example, the third relay 130 is used to replace the main negative relay and the fast charge negative relay. The first pole 10 is connected to the import pin, and thus connected to the negative electrode of the battery cell through the copper bar, the first sub-pole 21 is connected to the main negative circuit pin, and then connected to the first high-voltage interface 221, and the second sub-pole 22 is connected to the fast charge negative circuit pin, and then connected to the second high-voltage interface 222. At this time, the battery pack 200 includes a total of 4 relays 100.

[0104] When the battery pack 200 is discharging, the first moving contact plate 31 in the third relay 130 is connected to the first pole 10 and the first sub-pole 21, and the first pole 10 and the first sub-pole 21 are conductive, that is, the negative pole of the battery cell and the main negative circuit pin are conductive; the main positive relay is also conductive, then the main positive circuit and the main negative circuit are both conductive, and the battery cell 210 discharges to the external load through the first high-voltage interface 221.

[0105] At the beginning of discharge, the pre-charge relay is turned on to protect the battery pack 200, and then disconnected. The second moving contact plate 32 of the third relay 130 is spaced from the first pole 10 and the second sub-pole 22, and the first pole 10 is disconnected from the second sub-pole 22, that is, the negative pole of the battery cell is disconnected from the fast charge negative circuit pin; the fast charge positive relay is also disconnected.

[0106] When the battery pack 200 is charging, the second moving contact plate 32 in the third relay 130 is connected to the first pole 10 and the second sub-pole 22, and the first pole 10 and the second sub-pole 22 are conductive, that is, the negative pole of the battery cell and the fast charging negative circuit pin are conductive; the fast charging positive relay is also conductive, then the fast charging positive circuit and the fast charging negative circuit are both conductive, and the external power supply charges the battery cell 210 through the second high voltage interface 222.

[0107] At the beginning of charging, the pre-charge relay is turned on to protect the battery pack 200, and then disconnected. The first moving contact plate 31 of the third relay 130 is spaced from the first pole 10 and the first sub-pole 21, and the first pole 10 is disconnected from the first sub-pole 21, that is, the negative pole of the battery cell is disconnected from the main negative circuit pin, and the main positive relay is also disconnected.

[0108] In this way, the main negative relay and the fast charging negative relay can share a relay 100 housing and a relay 100 fixed pin (corresponding to the first pole 10), thereby sharing one imported copper busbar wiring, reducing the use of one copper busbar, reducing the use of one relay 100, and thereby reducing the space occupied in the battery pack 200.

[0109] In some examples, such as Fig. 9 As shown, while the first relay 110 is used to replace the main positive relay and the pre-charge relay, the third relay 130 is used to replace the main negative relay and the fast charge negative relay. The first pole 10 of the first relay 110 is connected to any number of second poles 20 to control the transmission of power between the positive electrode of the battery cell and the first high-voltage interface 221. The first pole 10 of the third relay 130 is connected to any number of second poles 20 to control the transmission of power between the negative electrode of the battery cell and the first high-voltage interface 221 and the second high-voltage interface 222. In this way, the use of two copper busbars can be reduced, the use of two relays 100 can be reduced, and the space occupied in the battery pack 200 can be reduced.

[0110] In some examples, such as Fig.10 As shown, while the second relay 120 is used to replace the main positive relay and the fast charging positive relay, the third relay 130 is used to replace the main negative relay and the fast charging negative relay. The first pole 10 of the second relay 120 is connected to any number of second poles 20 to control the transmission of power between the positive electrode of the battery cell and the first high-voltage interface 221 and the second high-voltage interface 222. The first pole 10 of the third relay 130 is connected to any number of second poles 20 to control the transmission of power between the negative electrode of the battery cell and the first high-voltage interface 221 and the second high-voltage interface 222. In this way, the use of at least two copper busbars can be reduced, the use of at least two relays 100 can be reduced, and the space occupied in the battery pack 200 can be reduced.

[0111] See also Fig.11 The embodiment of the present application further provides a vehicle 1000. The vehicle 1000 includes a battery pack 200 according to any of the above embodiments. The vehicle 1000 includes a vehicle body, and the battery pack 200 may be disposed at the bottom of the vehicle body.

[0112] In summary, in the relay 100, the battery pack 200 and the vehicle 1000 of the embodiment of the present application, the plurality of movable contact plates 30 respectively correspond to the plurality of second poles 20, and the plurality of movable contact plates 30 respectively control the on-off state between the first pole 10 and the plurality of second poles 20 to control the working state of the relay 100. In this way, the number of relays 100 in the battery pack 200 can be reduced, thereby reducing the space occupied by the relays 100 in the battery pack 200, and also reducing the cost.

[0113] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0114] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0115] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0116] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific processes and examples of materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0117] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0118] Although the embodiments of the present application have been shown and described above, 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 spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A relay (100), characterized in that: The relay (100) comprises a first pole (10), a plurality of second poles (20) and a plurality of movable touch plates (30), wherein the plurality of movable touch plates (30) respectively correspond to the plurality of second poles (20), and the plurality of movable touch plates (30) are used to respectively control the on-off state between the first pole (10) and the plurality of second poles (20) so as to control the working state of the relay (100).

2. The relay (100) according to claim 1, characterized in that: When each of the movable contact plates (30) is connected to the first pole (10) and a corresponding one of the second poles (20), the first pole (10) and the corresponding one of the second poles (20) are electrically connected; When each of the movable contact plates (30) is spaced apart from the first pole (10) and a corresponding one of the second poles (20), the first pole (10) and the corresponding one of the second poles (20) are disconnected.

3. The relay (100) according to claim 1, characterized in that: The relay (100) further comprises a plurality of working components (40) corresponding to the plurality of moving touch plates (30), and the plurality of working components (40) are used to respectively control the positions of the plurality of moving touch plates (30).

4. The relay (100) according to claim 3, characterized in that: Each of the working components (40) comprises an iron core (41) and a coil (42). When the coil (42) is energized, it cooperates with the iron core (41) to generate a magnetic field, driving a corresponding one of the moving touch plates (30) to be connected to or spaced from the first pole (10) and a corresponding one of the second poles (20).

5. A battery pack (200), characterized in that: A relay (100) comprising any one of claims 1 to 4.

6. The battery pack (200) according to claim 5, characterized in that: The battery pack (200) further comprises a battery cell (210) and a high-voltage interface (220), and the relay (100) is connected between the battery cell (210) and the high-voltage interface (220) via a copper busbar, and is used to control the transmission of electric energy between the battery cell (210) and the high-voltage interface (220).

7. The battery pack (200) according to claim 5, characterized in that: The battery pack (200) further comprises a battery management module, which is connected to the relay (100) and is used to control the power supply to the multiple working components (40) of the relay (100).

8. The battery pack (200) according to claim 6, characterized in that: The battery cell (210) comprises a battery cell positive electrode and a battery cell negative electrode, the high-voltage interface (220) comprises a first high-voltage interface (221), the first high-voltage interface (221) being connected to the battery cell positive electrode and the battery cell negative electrode respectively, and the relay (100) comprises a first relay (110), the first relay (110) being connected between the battery cell positive electrode and the first high-voltage interface (221); The first pole (10) of the first relay (110) is electrically connected to any number of the second poles (20) to control the transmission of electric energy between the positive electrode of the battery cell and the first high-voltage interface (221).

9. The battery pack (200) according to claim 6, characterized in that: The battery cell (210) comprises a battery cell positive electrode and a battery cell negative electrode, the high-voltage interface (220) comprises a first high-voltage interface (221) and a second high-voltage interface (222), the first high-voltage interface (221) being connected to the battery cell positive electrode and the battery cell negative electrode respectively, the second high-voltage interface (222) being connected to the battery cell positive electrode and the battery cell negative electrode respectively, the relay (100) comprises a second relay (120), a first pole (10) of the second relay (120) being connected to the battery cell positive electrode, and a plurality of second poles (20) of the second relay (120) being connected to the first high-voltage interface (221) and the second high-voltage interface (222) respectively; The first pole (10) of the second relay (120) is electrically connected to any number of the second poles (20) to control the transmission of electric energy between the positive electrode of the battery cell and the first high-voltage interface (221) and the second high-voltage interface (222).

10. The battery pack (200) according to claim 6, characterized in that: The battery cell (210) comprises a battery cell positive electrode and a battery cell negative electrode, the high-voltage interface (220) comprises a first high-voltage interface (221) and a second high-voltage interface (222), the first high-voltage interface (221) being connected to the battery cell positive electrode and the battery cell negative electrode respectively, the second high-voltage interface (222) being connected to the battery cell positive electrode and the battery cell negative electrode respectively, the relay (100) comprises a third relay (130), the first pole (10) of the third relay (130) being connected to the battery cell negative electrode, and the plurality of second poles (20) of the third relay (130) being connected to the first high-voltage interface (221) and the second high-voltage interface (222) respectively; The first pole (10) of the third relay (130) is electrically connected to any number of the second poles (20) to control the transmission of electric energy between the negative electrode of the battery cell and the first high-voltage interface (221) and the second high-voltage interface (222).

11. A vehicle (1000), characterized in that: A battery pack (200) comprising any one of claims 5 to 10.

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