Power battery integrated high-voltage control system

Abstract

The invention provides a power battery integrated high-voltage control system which comprises a bus board and at least one relay, a high-voltage output circuit and a low-voltage control circuit are integrated on the bus board, a high-voltage output pole of the relay is electrically connected into the high-voltage output circuit, and a low-voltage control terminal of the relay is electrically connected into the low-voltage control circuit. According to the integrated high-voltage control system for the power battery, the bus board is adopted, the control circuit is integrated on the bus board, and the relay is fixed on the bus board, so that the installation of the high-voltage control system can be realized, the relay does not need to be connected through a plurality of electric wires, the integration level is high, the installation is convenient, the failure rate is low, and the total volume can be further reduced as required.

Description

[0001] The present invention is a divisional of the Chinese patent application filed on March 30, 2017 (application number: 201710202501.1). Technical Field

[0002] The invention relates to an integrated high-voltage control system for a power battery. Background Art

[0003] With the increasing pollution of the earth's environment and the reduction of oil resources, electric vehicles are attracting more and more attention due to their advantages such as energy saving, environmental protection and low noise.

[0004] Power batteries are the power source of electric vehicles, and their high-voltage control systems are connected by multiple relays, controllers and other components. In the prior art, the components in the control system are connected by multiple wires. This connection method makes the entire control system complex, large in size, inconvenient to install and prone to failure. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an integrated high-voltage control system for a power battery in order to overcome the defects of the high-voltage control system of the power battery in the prior art, such as complex structure, large size, inconvenient installation and easy failure.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides an integrated high-voltage control system for a power battery, which includes a busbar and at least one relay. A high-voltage output circuit and a low-voltage control circuit are integrated on the busbar. The high-voltage output pole of the relay is electrically connected to the high-voltage output circuit, and the low-voltage control terminal of the relay is electrically connected to the low-voltage control circuit.

[0008] Preferably, the low-voltage control circuit is connected to the low-voltage main control terminal, and the low-voltage main control terminal is connected to the controller.

[0009] Preferably, the high-voltage output circuit is electrically connected to a high-voltage connection socket, and the high-voltage connection socket is connected to an external high-voltage system through a high-voltage connection plug.

[0010] Preferably, there are multiple relays, and the low-voltage control circuit is provided with low-voltage connection terminals having the same number as the relays, and the low-voltage connection terminals are connected to the low-voltage control terminals of the relays in a one-to-one correspondence.

[0011] Preferably, a fuse is also fixed on the busbar, and the fuse is electrically connected to the high-voltage output circuit.

[0012] Preferably, the portion where the high-voltage output circuit is connected to the fuse is an electrical connection piece, the end where the fuse is connected to the high-voltage output circuit is an end connection piece, and the electrical connection piece is electrically connected to the end connection piece.

[0013] Preferably, the electrical connection sheet is provided with an electrical connection through hole, the end connection sheet is provided with an end connection through hole, and the electrical connection sheet and the end connection sheet are fixedly connected by fixing screws penetrating the electrical connection through hole and the end connection through hole.

[0014] Preferably, an annular cavity arranged around the end connecting through hole is provided on one side of the end connecting piece facing the electrical connecting piece, a conductive elastic member is placed in the annular cavity, and the conductive elastic member is squeezed and fixed in the annular cavity by the end connecting piece and the electrical connecting piece.

[0015] Preferably, a ring-shaped placement cavity is provided around the electrical connection through hole on one side of the electrical connection piece facing the end connection piece, and a conductive elastic member is placed in the ring-shaped placement cavity. The conductive elastic member is squeezed and fixed in the ring-shaped placement cavity by the end connection piece and the electrical connection piece.

[0016] Preferably, the conductive elastic member is a conductive spring.

[0017] Preferably, a fixing washer is sleeved on the fixing screw, and the fixing washer is located between the end connecting piece and the nut of the fixing screw.

[0018] Preferably, a Hall sensor is also fixed on the busbar, a measuring terminal of the Hall sensor is connected to the high-voltage output circuit, and a signal output terminal of the Hall sensor is connected to the low-voltage control circuit.

[0019] Preferably, the number of relays is four, and the four relays are respectively a total positive relay, a total negative relay, a pre-charge relay, and a charging relay. The total positive relay and the total negative relay are connected in series in the high-voltage output circuit, and the pre-charge relay, the charging relay and the total positive relay are connected in parallel.

[0020] Preferably, the high voltage control system further comprises a pre-charging resistor, which is connected in series with the pre-charging relay.

[0021] Preferably, the portion connecting the high-voltage output circuit and the high-voltage output pole of the relay is a conductive plate, the end of the high-voltage output pole passing through the conductive plate is sleeved with a locking nut, and the high-voltage output pole is electrically connected to the conductive plate.

[0022] Preferably, an annular groove is provided on the surface of the relay, which is arranged around the circumference of the high-voltage output pole. An annular conductive member is installed in the annular groove, and the annular conductive member is squeezed and fixed in the annular groove by the high-voltage output pole and the conductive plate.

[0023] Preferably, the annular conductive element is a conductive spring.

[0024] Preferably, a pole gasket is also sleeved on the high-voltage output pole, and the pole gasket is located between the conductive plate and the locking nut.

[0025] Preferably, the low-voltage control terminal of the relay is electrically connected to the low-voltage control circuit through a low-voltage connector. The surface of the low-voltage control terminal of the relay is provided with a strip groove, a strip elastic piece is embedded in the strip groove, and the low-voltage connector has a protrusion that is stuck between the strip elastic piece and the strip groove.

[0026] Preferably, the high-voltage control system further comprises a shell, wherein the shell has a storage space for placing a busbar and a relay.

[0027] Preferably, at least one relay installation slot is provided in the accommodating space, the number of the relay installation slots is the same as the number of the relays, and a relay is placed in each relay installation slot.

[0028] Preferably, the housing includes a lower shell and an upper cover covering the lower shell, and a receiving space is formed between the upper cover and the lower shell.

[0029] Preferably, the lower shell is provided with a plurality of pairs of buckles, and the upper cover is provided with a plurality of pairs of slots, the positions of the buckles and the slots correspond one to one, and the buckles are snapped into the slots at corresponding positions.

[0030] Preferably, the inner surface of the upper cover is provided with at least one supporting column extending toward the lower shell body, and the supporting column supports and fixes the busbar.

[0031] Preferably, the outer surface of the shell is provided with a plurality of socket mounting holes, the socket mounting holes are electrically connected to the high-voltage output circuit, the socket mounting holes are installed with high-voltage connection sockets, a high-voltage connection plug is inserted into the high-voltage connection socket, and the high-voltage connection plug is connected to the external high-voltage system.

[0032] Preferably, a plurality of system mounting holes are provided on the outer surface of the shell, and the shell is fixed in the box body by mounting bolts passing through the system mounting holes.

[0033] Preferably, the low-voltage control circuit is connected to the low-voltage main control terminal, and a terminal installation opening is also provided on the housing, and the low-voltage main control terminal extends from the terminal installation opening to the outside of the housing and is fixed in the terminal installation opening.

[0034] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0035] The positive and progressive effects of the present invention are:

[0036] The integrated high-voltage control system for the power battery integrates the control circuit on the busbar by adopting a busbar, and the relay is fixed on the busbar, so that the installation of the high-voltage control system can be realized. There is no need to connect the relays through multiple wires. It has high integration, easy installation, low failure rate, and the total volume can be further reduced as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the structure of the integrated high-voltage control system of the power battery of the present invention.

[0038] Figure 2 for Figure 1 The schematic diagram of the structure of the integrated high-voltage control system of the power battery without the upper cover is shown.

[0039] Figure 3 for Figure 1 The schematic diagram of the structure of the lower shell of the power battery integrated high-voltage control system is shown.

[0040] Figure 4 for Figure 1 The structural schematic diagram of the upper cover of the power battery integrated high-voltage control system is shown.

[0041] Figure 5 for Figure 1 The cross-sectional schematic diagram of the connection between the fuse and the busbar of the power battery integrated high-voltage control system is shown.

[0042] Figure 6 for Figure 5 An enlarged view of the fuse connection to the busbar is shown.

[0043] Figure 7 for Figure 1 The cross-sectional schematic diagram of the connection between the relay and the busbar of the integrated high-voltage control system of the power battery is shown.

[0044] Figure 8 for Figure 7 An enlarged view of the relay and busbar connections is shown.

[0045] Fig. 9 for Figure 1 The schematic diagram of the structure of the relay of the power battery integrated high-voltage control system is shown.

[0046] Fig.10 for Figure 1 The structure diagram of the connection between the high-voltage connection plug and the high-voltage connection socket of the power battery integrated high-voltage control system is shown.

[0047] Description of Reference Numerals

[0048] Shell 1

[0049] Lower housing 11

[0050] Upper cover 12

[0051] Buckle 13

[0052] Card slot 14

[0053] Support column 15

[0054] Socket mounting hole 16

[0055] System mounting holes 17

[0056] Terminal installation port 18

[0057] Mounting port upper part 181

[0058] The lower part 182 of the installation port accommodates the space 2

[0059] Fuse installation slot 21 Relay installation slot 22 Screw installation hole 23 Busbar 3

[0060] High voltage output circuit 31 Low voltage control circuit 32 Low voltage connection terminal 33 Electrical connection piece 34

[0061] Conductive plate 35

[0062] Electrical connection through hole 36 relay 4

[0063] High voltage output pole 41 annular groove 42

[0064] Total negative relay 43

[0065] Charging relay 44

[0066] Pre-charge relay 45

[0067] Total positive relay 46

[0068] Low voltage control terminal 47

[0069] Strip groove 48

[0070] Strip elastic member 49

[0071] High voltage connection socket 5

[0072] Low voltage main control terminal 6

[0073] Fuse 7

[0074] End connection piece 71

[0075] Annular cavity 72

[0076] End connection through hole 73

[0077] Fixing screw 8

[0078] Nut 81

[0079] Conductive elastic member 9

[0080] Fixed gasket 10

[0081] Hall sensor 20

[0082] Signal output terminal 201

[0083] Lock nut 30

[0084] Ring-shaped conductive member 40

[0085] Pole gasket 50

[0086] High voltage connection plug 60 DETAILED DESCRIPTION

[0087] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0088] like Figures 1 to 10 As shown, the present invention provides an integrated high-voltage control system for a power battery, which includes a busbar 3 and at least one relay 4, on which a high-voltage output circuit 31 and a low-voltage control circuit 32 are integrated, a high-voltage output pole 41 of the relay 4 is electrically connected to the high-voltage output circuit 31, and a low-voltage control terminal 47 of the relay 4 is electrically connected to the low-voltage control circuit 32.

[0089] The high-voltage output circuit 31 and the low-voltage control circuit 32 of the high-voltage control system are integrated on the busbar 3, and the high-voltage output pole 41 and the low-voltage control terminal 47 of the relay 4 are respectively electrically connected to the high-voltage output circuit 31 and the low-voltage control circuit 32 of the busbar 3. In this embodiment, the high-voltage output pole 41 and the low-voltage control terminal 47 of the relay 4 can be electrically connected to the busbar 3 through wires or other metal conductive parts, respectively. In addition to integrating the high-voltage output circuit 31 and the low-voltage control circuit 32, the busbar 3 also plays a role in fixing the physical position of the relay 4 and other components.

[0090] A busbar 3 with a high degree of integration is used to control multiple relays 4 in the high-voltage control system. There is no need to connect the relays 4 through multiple wires, which simplifies the structure and connection method of the high-voltage control system, makes installation easy, and has a low failure rate. The number of relays 4 can be increased or decreased according to actual needs, further improving the application scope of the high-voltage control system.

[0091] The low voltage control circuit 32 is connected to the low voltage main control terminal 6, and the low voltage main control terminal 6 is connected to the controller; the high voltage output circuit 31 is electrically connected to the high voltage connection socket 5, and the high voltage connection socket 5 is connected to the external high voltage system through the high voltage connection plug 60. The high voltage control system only needs to connect the low voltage main control terminal 6 to the controller, and multiple high voltage connection sockets 5 are connected to the external high voltage system through the high voltage connection plug 60, so that the high voltage control system can realize the high voltage control of the external high voltage system.

[0092] like Figure 2 As shown, there are multiple relays 4, and the low-voltage control circuit 32 is provided with low-voltage connection terminals 33 of the same number as the relays 4, and the low-voltage connection terminals 33 are connected one-to-one with the low-voltage control terminals 47 of the relays 4. The low-voltage control circuit 32 is electrically connected to the low-voltage control terminals 47 on the relay 4 through the multiple low-voltage connection terminals 33, so that the low-voltage part of the relay 4 is connected to the controller through the low-voltage control terminal 47, the low-voltage connection terminal 33, and the low-voltage general control terminal 6, forming a low-voltage control loop, and the controller can output a signal to control the low-voltage part of the relay 4, thereby controlling the on-off of the high-voltage part of the relay 4. The connection circuits between each low-voltage connection terminal 33 and the low-voltage general control terminal 6 are independent of each other, and the controller can independently control the on-off of each relay 4.

[0093] like Figure 2 As shown, a fuse 7 is also fixed on the busbar 3, and both ends of the fuse 7 are electrically connected to the high-voltage output circuit 31. By setting the fuse 7 in the high-voltage output circuit 31, the high-voltage output circuit 31 is protected from overload. When the current in the high-voltage output circuit 31 is too large, the fuse 7 will automatically blow, thereby preventing the relay 4 from being burned out.

[0094] like Figure 2 As shown, a Hall sensor 20 is also fixed on the busbar 3, and the measuring terminal of the Hall sensor 20 is connected to the high-voltage output circuit 31, and is used to measure the current in the high-voltage output circuit 31; the signal output terminal 201 of the Hall sensor 20 is connected to the low-voltage control circuit 32, and is used to output the measured current data to the controller through the low-voltage control circuit 32 and the low-voltage main control terminal 6. The controller can select the on and off of the relay 4 according to the transmitted data.

[0095] A specific embodiment of the control circuit of the high voltage control system is as follows: Figure 2As shown. The number of the above-mentioned relays 4 is four, namely a total negative relay 43, a charging relay 44, a pre-charging relay 45 and a total positive relay 46. The total positive relay 46 and the total negative relay 43 are connected in series in the high-voltage output circuit 31, and the pre-charging relay 45 and the charging relay 44 are connected in parallel with the total positive relay 46. The high-voltage control system also includes a pre-charging resistor, which is connected in series with the pre-charging relay 45. The input end of the high-voltage control system can be connected to the positive and negative poles of the battery pack, and the output end can be connected to the electrodes of the high-voltage system. The total positive relay 46 is close to the positive pole of the battery pack, and the total negative relay 43 is located close to the negative pole of the battery pack. The pre-charging resistor is arranged adjacent to the pre-charging relay 45 and is electrically connected to the high-voltage output circuit 31, and is used to control the current passing through the pre-charging relay 45.

[0096] like Figures 5 and 6 As shown, the connection structure between the fuse 7 and the high-voltage output circuit 31 on the busbar 3 is as follows: the portion where the high-voltage output circuit 31 is connected to the fuse 7 is an electrical connecting piece 34, the end where the fuse 7 is connected to the high-voltage output circuit 31 is an end connecting piece 71, and the electrical connecting piece 34 is electrically connected to the end connecting piece 71.

[0097] The electrical connection sheet 34 is provided with an electrical connection through hole 36, and the end connection sheet 71 is provided with an end connection through hole 73. The electrical connection sheet 34 and the end connection sheet 71 are fixedly connected by fixing screws 8 that penetrate the electrical connection through hole 36 and the end connection through hole 73. The accommodating space 2 is further provided with a screw mounting hole 23 at a position corresponding to the fixing screw 8, and the end of the fixing screw 8 passes through the end connection through hole 73 and the electrical connection through hole 36 in sequence and is fixed in the screw mounting hole 23.

[0098] In order to ensure effective electrical connection between the end connection piece 71 and the electrical connection piece 34, a conductive elastic member 9 is further provided between the end connection piece 71 and the electrical connection piece 34. The conductive elastic member 9 may be a conductive spring. Specifically, an annular cavity 72 arranged around the end connection through hole 73 is provided on one side of the end connection piece 71 facing the electrical connection piece 34. The conductive elastic member 9 is placed in the annular cavity 72. The conductive elastic member 9 is squeezed and fixed in the annular cavity 72 by the end connection piece 71 and the electrical connection piece 34.

[0099] In other embodiments, the conductive elastic member 9 may also be disposed on the electrical connection sheet 34, that is, an annular placement cavity for accommodating the conductive elastic member 9 is disposed on one side of the electrical connection sheet 34. Specifically, an annular placement cavity disposed around the electrical connection through hole 36 is disposed on one side of the electrical connection sheet 34 facing the end connection sheet 71, and the conductive elastic member 9 is placed in the annular placement cavity, and the conductive elastic member 9 is squeezed and fixed in the annular placement cavity by the end connection sheet 71 and the electrical connection sheet 34.

[0100] By using the conductive elastic member 9, the end connecting piece 71 and the electrical connecting piece 34 can maintain electrical connection while being able to move in a relatively small range, so as to ensure that in the case of severe shaking, the fuse 7 and the high-voltage output circuit 31 still maintain effective electrical connection.

[0101] A fixing washer 10 is sleeved on the fixing screw 8, and the fixing washer 10 is located between the end connecting piece 71 and the nut 81 of the fixing screw 8. By using fixing washers 10 of different thicknesses, the locking degree of the fixing screw 8 can be appropriately adjusted, thereby adjusting the compression degree between the end connecting piece 71 and the electrical connecting piece 34.

[0102] like Figures 7 and 8 As shown, the connection structure between the high-voltage output circuit 31 and the high-voltage output pole 41 of the relay 4 is as follows: the part connecting the high-voltage output circuit 31 and the high-voltage output pole 41 of the relay 4 is a conductive plate 35, and the end of the high-voltage output pole 41 passing through the conductive plate 35 is sleeved with a locking nut 30, and the high-voltage output pole 41 is electrically connected to the conductive plate 35.

[0103] In order to ensure effective electrical connection between the high-voltage output pole 41 and the conductive plate 35, an annular conductive member 40 is also provided between the high-voltage output pole 41 and the conductive plate 35. Specifically, an annular groove 42 is provided on the surface of the relay 4, and the annular groove 42 is arranged around the circumference of the high-voltage output pole 41. The annular conductive member 40 is installed in the annular groove 42, and the annular conductive member 40 is squeezed and fixed in the annular groove 42 by the high-voltage output pole 41 and the conductive plate 35. By using the annular conductive member 40, the high-voltage output pole 41 and the conductive plate 35 are kept electrically connected, and can also move in a relatively small range, so as to ensure that the relay 4 and the high-voltage output circuit 31 are still effectively electrically connected in the case of severe shaking. The above-mentioned annular conductive member 40 is preferably a conductive spring.

[0104] The high voltage output pole 41 is also covered with a pole gasket 50, which is located between the conductive plate 35 and the locking nut 30. By using pole gaskets 50 of different thicknesses, the locking degree of the locking nut 30 can be appropriately adjusted, thereby adjusting the compression degree between the high voltage output pole 41 and the conductive plate 35.

[0105] like Fig. 9As shown, the low-voltage control terminal 47 of the relay 4 is electrically connected to the low-voltage control circuit 32 through a low-voltage connector. A strip groove 48 is provided on the surface of the low-voltage control terminal 47 of the relay 4. A strip elastic member 49 is embedded in the strip groove 48. The low-voltage connector has a protrusion that is inserted between the strip elastic member 49 and the strip groove 48. The strip elastic member 49 can be a strip conductive spring. The protrusion of the low-voltage connector is squeezed by the strip groove 48 and the strip elastic member 49, so that the low-voltage connector maintains electrical connection with the low-voltage control terminal 47 while being able to move in a relatively small range to ensure that the relay 4 and the low-voltage control circuit 32 still maintain effective electrical connection under severe shaking.

[0106] like Figures 1 to 4 As shown, the high-voltage control system further includes a housing 1, and the housing 1 has a receiving space 2 for placing a busbar 3 and a relay 4. The housing 1 includes a lower housing 11 and an upper cover 12 covering the lower housing 11, and a receiving space 2 is formed between the upper cover 12 and the lower housing 11. The busbar 3, the relay 4, the fuse 7, the pre-charging resistor and other components are all placed in the receiving space 2.

[0107] In order to ensure that each component can be fixed in the accommodating space 2, the accommodating space 2 is provided with mounting grooves corresponding to each component, that is, the surface of the lower housing 11 facing the upper cover 12 is provided with various mounting grooves. For example, a fuse mounting groove 21 for placing the fuse 7 is provided in the accommodating space 2 (that is, the side of the lower housing 11 facing the upper cover 12), and the fuse mounting groove 21 plays a role in fixing the fuse 7; at least one relay mounting groove 22 is also provided in the accommodating space 2 (that is, the side of the lower housing 11 facing the upper cover 12), and the number of the relay mounting grooves 22 is the same as the number of the relays 4, and each relay mounting groove 22 is placed with a relay 4, and the relay mounting groove 22 plays a role in fixing the relay 4.

[0108] like Figure 1 and Figure 2 As shown, the busbar 3 is placed in the lower housing 11 and fixedly installed with the relay 4 and the fuse 7. The upper cover 12 covers the busbar 3, and the busbar 3, the relay 4 and other components are enclosed in the housing 1 composed of the lower housing 11 and the upper cover 12.

[0109] like Figure 1 and Figure 4 As shown, the lower shell 11 and the upper cover 12 are buckled together by buckles 13 and slots 14. Specifically, the lower shell 11 is provided with multiple pairs of buckles 13, and the upper cover 12 is provided with multiple pairs of slots 14. The positions of the buckles 13 and the slots 14 correspond one to one, and the buckles 13 are snapped into the slots 14 at the corresponding positions.

[0110] like Figure 4As shown, the inner surface of the upper cover 12 is provided with at least one supporting column 15 extending toward the lower shell 11 , and the supporting column 15 supports and fixes the busbar 3 .

[0111] like Figure 3 As shown, the outer surface of the housing 1 is provided with a plurality of socket mounting holes 16, and the high-voltage connection socket 5 is installed in the socket mounting holes 16 at corresponding positions. The socket mounting holes 16 are arranged on the lower housing 11, and a space for inserting the high-voltage connection plug 60 is reserved around the socket mounting holes 16.

[0112] like Figures 1 to 3 , Fig.10 As shown, the outer surface of the housing 1 is provided with a plurality of system mounting holes 17, and the housing 1 is fixed in the box body by mounting bolts passing through the system mounting holes 17. The high-voltage control system can be fixed in the box body as a whole in the above manner, and the system mounting holes 17 are reserved, which facilitates the overall fixing of the high-voltage control system. The system mounting holes 17 are arranged on the lower housing 11 and are arranged perpendicular to the bottom surface of the lower housing 11.

[0113] like Figures 1 to 4 As shown, in order to allow the low-voltage main control terminal 6 to extend to the outside of the housing 1, a terminal installation opening 18 is further provided on the housing 1, and the low-voltage main control terminal 6 extends from the terminal installation opening 18 to the outside of the housing 1 and is fixed in the terminal installation opening 18. The terminal installation opening 18 is composed of an installation opening upper portion 181 and an installation opening lower portion 182. The installation opening upper portion 181 is located on the upper cover 12, and the installation opening lower portion 182 is located on the lower housing 11. During installation, the busbar 3 is first placed in the lower housing 11. At this time, the low-voltage main control terminal 6 is located in the installation opening lower portion 182, and then the upper cover 12 is covered on top. The installation opening upper portion 181 and the installation opening lower portion 182 form the terminal installation opening 18, and the terminal installation opening 18 fixes the low-voltage main control terminal 6. Dividing the terminal installation opening 18 into two parts facilitates the installation of the high-voltage control system.

[0114] like Figure 1 to Figure 2 , Fig.10 As shown, a high-voltage connection plug 60 is inserted into the high-voltage connection socket 5, and the high-voltage connection plug 60 is connected to an external high-voltage system. The high-voltage connection plug 60 and the high-voltage connection socket 5 are also floatingly connected to ensure that the high-voltage connection plug 60 and the high-voltage connection socket 5 still maintain an effective electrical connection under severe shaking. There are many specific embodiments of the connection between the high-voltage connection plug 60 and the high-voltage connection socket 5, one of which is shown in China's invention patent CN106329225A.

[0115] The present invention is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the present invention. The protection scope of the present invention is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are within the protection scope of the present invention.

Claims

1. A power battery integrated high voltage control system, characterized in that: It comprises a busbar (3) and at least one relay (4); a high-voltage output circuit (31) and a low-voltage control circuit (32) are integrated on the busbar (3); a high-voltage output pole (41) of the relay (4) is electrically connected to the high-voltage output circuit (31); and a low-voltage control terminal (47) of the relay (4) is electrically connected to the low-voltage control circuit (32).

2. The integrated high-voltage control system for power batteries according to claim 1, characterized in that: The low-voltage control circuit (32) is connected to a low-voltage main control terminal (6), and the low-voltage main control terminal (6) is connected to a controller; And / or, a fuse (7) is also fixed on the busbar (3), and the fuse (7) is electrically connected to the high-voltage output circuit (31); And / or, the number of the relays (4) is four, the four relays (4) are respectively a total positive relay (46), a total negative relay (43), a pre-charge relay (45), and a charging relay (44), the total positive relay (46) and the total negative relay (43) are connected in series in the high-voltage output circuit (31), and the pre-charge relay (45) and the charging relay (44) are connected in parallel with the total positive relay (46); And / or, the portion of the high-voltage output circuit (31) connected to the high-voltage output pole (41) of the relay (4) is a conductive plate (35), the end of the high-voltage output pole (41) passing through the conductive plate (35) is sleeved with a locking nut (30), and the high-voltage output pole (41) is electrically connected to the conductive plate (35); And / or, the high-voltage control system further comprises a housing (1), wherein the housing (1) has a storage space (2) for placing the busbar (3) and the relay (4).

3. The integrated high-voltage control system for power batteries according to claim 2, characterized in that: The high-voltage output circuit (31) is electrically connected to a high-voltage connection socket (5), and the high-voltage connection socket (5) is connected to an external high-voltage system via a high-voltage connection plug (60); And / or, the portion where the high-voltage output circuit (31) is connected to the fuse (7) is an electrical connection piece (34), the end where the fuse (7) is connected to the high-voltage output circuit (31) is an end connection piece (71), and the electrical connection piece (34) is electrically connected to the end connection piece (71); And / or, the high-voltage control system further comprises a pre-charging resistor, the pre-charging resistor being connected in series with the pre-charging relay (45); And / or, the surface of the relay (4) is provided with an annular groove (42), the annular groove (42) is arranged around the circumference of the high-voltage output pole (41), an annular conductive member (40) is installed in the annular groove (42), and the annular conductive member (40) is squeezed and fixed in the annular groove (42) by the high-voltage output pole (41) and the conductive plate (35); And / or, the high-voltage output pole (41) is also covered with a pole gasket (50), and the pole gasket (50) is located between the conductive plate (35) and the locking nut (30); And / or, at least one relay installation slot (22) is provided in the accommodating space (2), the number of the relay installation slots (22) is the same as the number of the relays (4), and each relay installation slot (22) is provided with one relay (4); And / or, the housing (1) comprises a lower shell (11) and an upper cover (12) covering the lower shell (11), and the accommodating space (2) is formed between the upper cover (12) and the lower shell (11); And / or, the outer surface of the housing (1) is provided with a plurality of socket mounting holes (16), the socket mounting holes (16) are electrically connected to the high-voltage output circuit (31), the socket mounting holes (16) are provided with high-voltage connection sockets (5), a high-voltage connection plug (60) is inserted into the high-voltage connection socket (5), and the high-voltage connection plug (60) is connected to an external high-voltage system; And / or, the outer surface of the housing (1) is provided with a plurality of system mounting holes (17), and the housing (1) is fixed in the box body by mounting bolts passing through the system mounting holes (17); And / or, the low-voltage control circuit (32) is connected to a low-voltage main control terminal (6), the housing (1) is further provided with a terminal mounting opening (18), the low-voltage main control terminal (6) extends from the terminal mounting opening (18) to the outside of the housing (1) and is fixed in the terminal mounting opening (18).

4. The integrated high-voltage control system for a power battery as claimed in claim 3, characterized in that: The electrical connection sheet (34) is provided with an electrical connection through hole (36), and the end connection sheet (71) is provided with an end connection through hole (73); the electrical connection sheet (34) and the end connection sheet (71) are fixedly connected by fixing screws (8) penetrating the electrical connection through hole (36) and the end connection through hole (73); And / or, the annular conductive member (40) is a conductive spring; And / or, the lower shell (11) is provided with a plurality of pairs of buckles (13), the upper cover (12) is provided with a plurality of pairs of slots (14), the positions of the buckles (13) and the slots (14) correspond one to one, and the buckles (13) are snapped into the slots (14) at corresponding positions; And / or, the inner surface of the upper cover (12) is provided with at least one support column (15) extending toward the lower shell (11), and the support column (15) supports and fixes the busbar (3).

5. The integrated high-voltage control system for power batteries according to claim 4, characterized in that: An annular cavity (72) arranged around the end connection through hole (73) is provided on one side of the end connection sheet (71) facing the electrical connection sheet (34); a conductive elastic member (9) is placed in the annular cavity (72); the conductive elastic member (9) is squeezed and fixed in the annular cavity (72) by the end connection sheet (71) and the electrical connection sheet (34); Alternatively: a side of the electrical connection sheet (34) facing the end connection sheet (71) is provided with an annular placement cavity arranged around the electrical connection through hole (36), a conductive elastic member (9) is placed in the annular placement cavity, and the conductive elastic member (9) is squeezed and fixed in the annular placement cavity by the end connection sheet (71) and the electrical connection sheet (34).

6. The integrated high-voltage control system for a power battery as claimed in claim 5, characterized in that: The conductive elastic member (9) is a conductive spring.

7. The integrated high-voltage control system for a power battery as claimed in claim 5, characterized in that: A fixing washer (10) is sleeved on the fixing screw (8), and the fixing washer (10) is located between the end connecting piece (71) and the nut (81) of the fixing screw (8).

8. The integrated high-voltage control system for a power battery according to claim 1, characterized in that: The number of the relays (4) is plural, and the low-voltage control circuit (32) is provided with low-voltage connection terminals (33) of the same number as the number of the relays (4), and the low-voltage connection terminals (33) are connected to the low-voltage control terminals (47) of the relays (4) in a one-to-one correspondence.

9. The integrated high-voltage control system for power batteries according to claim 1, characterized in that: A Hall sensor (20) is also fixed on the busbar (3), a measuring terminal of the Hall sensor (20) is connected to the high-voltage output circuit (31), and a signal output terminal (201) of the Hall sensor (20) is connected to the low-voltage control circuit (32).

10. The integrated high-voltage control system for power batteries according to claim 1, characterized in that: The low-voltage control terminal (47) of the relay (4) is electrically connected to the low-voltage control circuit (32) via a low-voltage connector; a strip-shaped groove (48) is provided on the surface of the low-voltage control terminal (47) of the relay (4); a strip-shaped elastic member (49) is embedded in the strip-shaped groove (48); and the low-voltage connector has a protrusion that is inserted between the strip-shaped elastic member (49) and the strip-shaped groove (48).

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