Power battery high-voltage control device and electric automobile

Abstract

The utility model discloses a power battery high-voltage control device and an electric automobile, the power battery high-voltage control device comprises a housing, a relay and a PCB, the relay and the PCB are installed in the housing, one end of the relay is provided with a pin, the PCB is attached to one end, provided with the pin, of the relay, and the power battery high-voltage control device is arranged on the housing. And the relay is welded and electrically connected to the PCB through the pins. According to the high-voltage control device for the power battery, the relay is mounted on the PCB through the pin instead of a traditional lug mounting mode, and meanwhile, circuit connection is realized through the cooperation of the pin and the printed circuit on the PCB, so that a connecting cable between the relay and an adjacent component is omitted, the size of the high-voltage control device for the power battery is reduced, the structure is simplified, and the cost is reduced. The envelope size of the shell is reduced, and the adaptability of the device is improved; the PCB can integrate a control loop, a voltage acquisition loop and the like of a control device, so that no lead is arranged in the system, and the internal structure is simple.

Description

Technical Field

[0001] The utility model relates to a power battery high voltage control device and an electric vehicle. Background Art

[0002] With the continuous development of new energy technology, new energy products are becoming more and more popular, and the market share is increasing. As an important component of the electronic control of new energy products, the battery system distribution box (BDU) has also become a hot spot for research and development. At present, most battery system distribution boxes are composed of an upper cover, a lower cover, a copper bus, and corresponding functional electrical components. The current integrated BDU can integrate various components into an overall shell. Although this method has a certain degree of integration and is conducive to production standardization, the internal layout of this distribution box is chaotic, and the control wires of various components in the distribution box are intertwined. In addition, manual threading and production are required during production, and the degree of consistency is not high. In addition, it is large in size and heavy in weight. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of unreasonable layout and large volume of the battery system distribution box in the prior art, and to provide a power battery high-voltage control device and an electric vehicle.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A power battery high-voltage control device comprises a housing, a relay and a PCB board installed in the housing, one end of the relay has a pin, the PCB board is attached to the end of the relay provided with the pin, and the relay is welded and electrically connected to the PCB board through the pin.

[0006] In this solution, the power battery high-voltage control device changes the traditional ear-seat installation of the relay to a pin-mounted one on the PCB (Printed Circuit Board). At the same time, the pins are used to cooperate with the printed circuit on the PCB to achieve circuit connection, eliminating the connection cables between the relay and adjacent components, reducing the size of the power battery high-voltage control device, simplifying the structure, reducing the envelope size of the shell, and increasing the adaptability of the device. In addition, since the PCB board can integrate the control circuit, voltage acquisition circuit, etc. of the control device, there is no wire in the system and the internal structure is simple. At the same time, the PCB board can be printed in batches, and its production consistency is high, the error rate is extremely low, and the reliability of the device is improved.

[0007] Preferably, the relay comprises a first relay, and the first relay is further provided with a first connection end and a second connection end at an end opposite to the pin, the first connection end is electrically connected to the positive first terminal through a conductive bar, and the second connection end is electrically connected to the positive second terminal through another conductive bar;

[0008] And / or, the relay includes a second relay, and the second relay has a first connection end and a second connection end at an end opposite to the pin, the first connection end is electrically connected to the first terminal of the negative electrode through a conductive bar, and the second connection end is electrically connected to the second terminal of the negative electrode through another conductive bar.

[0009] In this solution, the first relay is used to control the on-off between the positive first terminal and the positive second terminal, and the second relay is used to control the on-off between the negative first terminal and the negative second terminal. The PCB board and the connection terminal for connecting with the external cable are respectively arranged at both ends of the first relay, so that the conductive bar and the PCB will not interfere with each other, and it is also convenient to arrange the external connection cable, saving the installation space of the power battery high-voltage control device.

[0010] Preferably, the power battery high-voltage control device also includes a charging fuse, which is arranged on the passage between the first positive terminal and the second positive terminal, and the charging fuse is arranged in the shell and away from one side edge of the PCB board.

[0011] In this solution, the above structure is adopted to facilitate the layout of components, save installation space, and thus reduce the volume of the power battery high-voltage control device. Among them, when the current flowing through the charging fuse exceeds the set current, a fuse effect is generated to protect the circuit.

[0012] Preferably, the shell includes a shell body and a first sealing cover, the upper surface of the shell body is provided with a first mounting port, the charging fuse is installed inside the shell through the first mounting port, and the first sealing cover is covered on the first mounting port.

[0013] In this solution, the above-mentioned structural arrangement is adopted to facilitate the protection and replacement of the charging fuse.

[0014] Preferably, the positive first terminal and the negative first terminal arranged side by side are located between the positive second terminal and the negative second terminal, and the positive first terminal, the negative first terminal and the positive second terminal, the negative second terminal are staggered in the width direction of the shell;

[0015] And / or, the positive first terminal and the negative first terminal arranged side by side are located between the positive second terminal and the negative second terminal, and the positive first terminal, the negative first terminal and the positive second terminal, the negative second terminal are staggered in the height direction of the shell.

[0016] In this solution, the envelope size is reduced by staggering the connection terminals in height and width directions, making the structure compact, saving installation space of the device, and preventing interference between the connection cables, thereby facilitating the installation of the connection cables.

[0017] Preferably, the positive first terminal and the negative first terminal are arranged near the middle of the shell, and the positive second terminal and the negative second terminal are arranged at two ends of the shell respectively.

[0018] In this solution, the above-mentioned structural setting is adopted to facilitate the staggered layout of the terminal in the width direction, reduce the size of the terminal in the length direction, prevent cable interference between the various terminal terminals, and save the installation space of each cable.

[0019] Preferably, a pre-charging circuit is further provided on the PCB board, and the relay further includes a third relay, and the third relay is installed on the pre-charging circuit.

[0020] In this solution, the above structure is adopted, and the third relay is used to control the on and off of the pre-charging circuit. The pre-charging circuit is used to limit the current size at the initial stage of system power-on, thereby protecting key components such as relays from damage caused by large current impact.

[0021] Preferably, a pre-charging resistor is also installed on the pre-charging circuit, and the pre-charging resistor is installed on the PCB board through a pin arranged at the bottom thereof, and the pre-charging resistor and the relay are located on the same side of the PCB board.

[0022] In this solution, the pre-charge resistor is used to reduce the current in the pre-charge circuit and protect the external devices connected to it. The pre-charge circuit limits the current through the pre-charge resistor so that the battery can be charged smoothly and safely.

[0023] Preferably, the pre-charging resistor is arranged in the housing and close to the edge of the PCB board.

[0024] In this solution, when current flows through the pre-charging resistor, the pre-charging resistor will generate heat. The above-mentioned structural setting is adopted to achieve rapid heat dissipation of the pre-charging resistor and improve safety.

[0025] Preferably, the pre-charging resistor is located directly below the charging fuse.

[0026] In this solution, the above-mentioned structural arrangement is adopted to form a stacking structure, thereby reducing the size occupied by the device on the horizontal plane and saving installation space.

[0027] Preferably, a heating circuit is provided on the PCB board, and the relay further comprises a fourth relay, and the fourth relay is installed on the heating circuit.

[0028] In this solution, the heating circuit is used to connect to an external heating film to achieve a heating function, and the fourth relay is used to control the on and off of the heating circuit.

[0029] Preferably, a heating fuse is also provided on the heating circuit, and the heating fuse is arranged in the shell and located in the area surrounded by the projections of the first positive terminal, the first negative terminal, the second positive terminal and the second negative terminal in the vertical direction.

[0030] In this solution, the above-mentioned structural arrangement is adopted to reduce the size occupied by the device on the horizontal plane, save installation space, and reduce the volume.

[0031] Preferably, the shell comprises a shell body and a second sealing cover, the upper surface of the shell body is provided with a second mounting opening, the heating fuse is installed inside the shell through the second mounting opening, and the second sealing cover is covered on the second mounting opening.

[0032] In this solution, the above-mentioned structural arrangement is adopted to facilitate the protection and replacement of the heating fuse.

[0033] Preferably, the heating fuse is located above the third relay or the fourth relay.

[0034] In this solution, the above-mentioned structural arrangement is adopted to form a stacking structure, thereby reducing the size occupied by the device on the horizontal plane and reducing the volume of the device.

[0035] Preferably, the power battery high-voltage control device also includes a Hall sensor, which is arranged in the shell and sleeved on the conductive bar of the second terminal of the negative electrode, and the interface of the Hall sensor is installed on the outer surface of the shell.

[0036] Preferably, a high voltage interface is installed on the PCB board for electrically connecting to a battery management system.

[0037] Preferably, a low-voltage control interface is installed on the PCB board for electrically connecting to a battery management system.

[0038] An electric vehicle comprises the power battery high voltage control device as described above.

[0039] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0040] The positive progressive effect of the utility model is that the relay in the power battery high-voltage control device is installed on the PCB board through pins instead of the traditional ear seat, and the circuit connection is realized by the pins cooperating with the printed circuit on the PCB board, thereby eliminating the connection cables between the relay and the adjacent components, reducing the volume of the power battery high-voltage control device, simplifying the structure, reducing the envelope size of the shell, and increasing the adaptability of the device; and, since the PCB board can integrate the control circuit, voltage acquisition circuit, etc. of the control device, there is no wire in the system and the internal structure is simple; at the same time, the PCB board can be printed in batches, and its production consistency is high, the error rate is extremely low, and the reliability of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic structural diagram of a power battery high voltage control device according to a preferred embodiment of the utility model.

[0042] Figure 2 This is a schematic diagram of the internal structure of a power battery high-voltage control device with a hidden upper cover in a preferred embodiment of the utility model.

[0043] Figure 3 The internal structure of the power battery high voltage control device with hidden shell in a preferred embodiment of the utility model is shown in FIG. Figure 1 .

[0044] Figure 4 The internal structure of the power battery high voltage control device with hidden shell in a preferred embodiment of the utility model is shown in FIG. Figure 2 .

[0045] Figure 5 This is a schematic diagram of a power battery high voltage control device according to a preferred embodiment of the utility model.

[0046] Description of reference numerals:

[0047] Shell 1

[0048] Shell body 11

[0049] First sealing cover 12

[0050] Second sealing cover 13

[0051] Relay 2

[0052] First relay 201

[0053] Second relay 202

[0054] First connection end 211

[0055] The second connection terminal 212

[0056] The third relay 203

[0057] Fourth relay 204

[0058] PCB board 3

[0059] Charging fuse 4

[0060] Pre-charge resistance 5

[0061] Heating fuse 6

[0062] Hall sensor 7

[0063] Interface 71

[0064] High voltage interface 8

[0065] Low voltage control interface 9

[0066] Positive first terminal 100

[0067] Positive second terminal 200

[0068] Negative first terminal 300

[0069] Negative second terminal 400

[0070] Height direction 500

[0071] Width direction 600 DETAILED DESCRIPTION

[0072] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0073] like Figure 1-Figure 5 As shown, this embodiment discloses a power battery high voltage control device, which includes a housing 1, a relay 2 and a PCB board 3 installed in the housing 1, one end of the relay 2 has a pin, the PCB board 3 is attached to the end of the relay 2 with the pin, and the relay 2 is welded and electrically connected to the PCB board 3 through the pin. In the power battery high voltage control device, the relay 2 is installed on the PCB board 3 through the pin instead of the traditional ear seat, which simplifies the structural setting and facilitates miniaturization. At the same time, the circuit connection is realized by the pin and the printed circuit on the PCB board 3, which saves the connection cable between the relay 2 and the adjacent components, reduces the volume of the power battery high voltage control device, and simplifies the structure.

[0074] Since the PCB board can integrate the control circuit and voltage acquisition circuit of the control device, there is no wire in the system, and the PCB board production is batch printing. Therefore, the product has high production consistency, extremely low error rate, and is also easy to install, improving assembly efficiency. At the same time, the integration of the relay in the shell is simplified, the existing high-voltage box structure is simplified, and the shrink envelope size is as small as possible to adapt to more battery packs. In addition, the shell is once-in-one injection molding, with high production efficiency, which can achieve batch and low-cost production.

[0075] like Figure 2 and Figure 4 As shown, in this embodiment, the relay 2 includes a first relay 201, and the first relay 201 is further provided with a first connection end 211 and a second connection end 212 at one end opposite to the pin, the first connection end 211 is electrically connected to the positive first terminal 100 through a conductive bar, and the second connection end 212 is electrically connected to the positive second terminal 200 through another conductive bar. The first relay 201 is used to control the on-off between the positive first terminal 100 and the positive second terminal 200. The PCB board 3 and the connection end for connecting with the external cable are respectively arranged at both ends of the first relay 201, so that the conductive bar and the PCB will not interfere with each other, and it is also convenient to set the external connection cable, which is convenient for miniaturization of the device and saves the installation space of the power battery high-voltage control device.

[0076] like Figure 2 and Figure 4 As shown, in this embodiment, the relay 2 further includes a second relay 202, and the second relay 202 is further provided with a first connection end and a second connection end at an end opposite to the pin, the first connection end is electrically connected to the negative first wiring terminal 300 through a conductive bar, and the second connection end is electrically connected to the negative second wiring terminal 400 through another conductive bar. The second relay 202 is used to control the on-off between the negative first wiring terminal 300 and the negative second wiring terminal 400.

[0077] In this embodiment, the first relay 201 and the second relay 202 are respectively arranged on the positive circuit and the negative circuit. Of course, in other embodiments, the first relay 201 and the second relay 202 can be arranged selectively.

[0078] like Figure 2-Figure 4 As shown, the power battery high voltage control device also includes a charging fuse 4, which is arranged on the path between the positive first terminal 100 and the positive second terminal 200, and the charging fuse 4 is arranged in the housing 1 and away from the edge of one side of the PCB board 3, which is convenient for the arrangement of components, saves installation space, and thus reduces the volume of the power battery high voltage control device. Among them, when the current flowing through the charging fuse 4 exceeds the set current, a fusing effect is generated to protect the circuit.

[0079] like Figure 1 and Figure 2 As shown, in order to protect the charging fuse 4 and facilitate the replacement of the charging fuse 4, the shell 1 includes a shell body 11 and a first sealing cover 12. The upper surface of the shell body 11 is provided with a first mounting port. The charging fuse 4 is installed inside the shell 1 through the first mounting port, and the first sealing cover 12 is covered on the first mounting port.

[0080] like Figure 1-Figure 3 As shown, in order to facilitate the setting of the connecting cables and prevent interference between the cables, the positive first terminal 100 and the negative first terminal 300 arranged side by side are located between the positive second terminal 200 and the negative second terminal 400, and the positive first terminal 100, the negative first terminal 300 and the positive second terminal 200, the negative second terminal 400 are staggered in the width direction 600 of the shell 1; at the same time, the positive first terminal 100, the negative first terminal 300 and the positive second terminal 200, the negative second terminal 400 are staggered in the height direction 500 of the shell 1. The positive first terminal 100 and the negative first terminal 300 are grouped together, and the positive second terminal 200 and the negative second terminal 400 are grouped together, the terminals of each group are arranged side by side, and the two groups of terminals are staggered by 5 in the height direction, and the positive first terminal 100, the negative first terminal 300, the positive second terminal 200, and the negative second terminal 400 are staggered in the width direction, so as to reduce the envelope size, make the structure compact, and save the installation space of each terminal.

[0081] like Figure 1-Figure 3 As shown, in order to facilitate the setting of connecting cables and prevent interference between cables, the positive first terminal 100 and the negative first terminal 300 are arranged near the middle area of ​​the shell 1, and the positive second terminal 200 and the negative second terminal 400 are respectively arranged at both ends of the shell 1, so as to facilitate the staggered layout of the terminals in the width direction 600, reduce the size of the terminals in the length direction, prevent cable interference between the terminals, and save installation space for each cable.

[0082] A downwardly recessed groove is provided in the middle of the upper surface of the housing 1 , and the positive first wiring terminal 100 and the negative first wiring terminal 300 are provided corresponding to the grooves for accommodating connecting cables for easy wiring.

[0083] Both ends of the front side of the shell are respectively provided with bosses protruding forward, and the positive second wiring terminal 200 and the negative second wiring terminal 400 are respectively provided on a boss to facilitate the connection of cables.

[0084] like Figure 3 and Figure 5As shown, in order to protect key components such as relay 2 from damage caused by large current impact, a pre-charging circuit is also provided on PCB board 3, and relay 2 also includes a third relay 203, which is installed on the pre-charging circuit. The third relay 203 is used to control the on and off of the pre-charging circuit. The pre-charging circuit is used to limit the size of the current at the initial stage of system power-on, thereby protecting the key components in the control device.

[0085] like Figure 3-Figure 5 As shown, a pre-charging resistor 5 is also installed in the pre-charging circuit, and the pre-charging resistor 5 is installed on the PCB board 3 through the pins arranged at the bottom thereof, and the pre-charging resistor 5 and the relay 2 are located on the same side of the PCB board 3 to save installation space. The pre-charging resistor 5 is used to reduce the current in the pre-charging circuit and protect the external devices connected thereto. The working principle of the pre-charging circuit is to limit the current through the pre-charging resistor 5 so that the battery can be charged and discharged smoothly and safely.

[0086] like Figure 3 and Figure 4 As shown, when current flows through the pre-charging resistor 5, the pre-charging resistor 5 will generate heat. The pre-charging resistor 5 is arranged in the housing 1 and close to the edge of the PCB board 3, which is convenient for rapid heat dissipation of the pre-charging resistor 5 and improves safety.

[0087] like Figure 3 and Figure 4 As shown, in order to make the device compact, the pre-charging resistor 5 is located directly below the charging fuse 4 to form a stacked structure, thereby reducing the size occupied by the device in the horizontal plane and reducing the volume.

[0088] like Figure 3 and Figure 5 As shown, a heating circuit is provided on the PCB board 3, and the heating circuit is used to connect with an external heating film to realize a heating function. The relay 2 also includes a fourth relay 204, which is installed on the heating circuit and is used to control the on and off of the heating circuit.

[0089] like Figure 2 , Figure 3 and Figure 5 As shown, a heating fuse 6 is also provided on the heating circuit. The heating fuse 6 is provided in the housing 1 and is located in the area surrounded by the projections of the positive first terminal 100, the negative first terminal 300, the positive second terminal 200, and the negative second terminal 400 in the vertical direction, so as to reduce the size of the device on the horizontal plane, save installation space, and reduce the volume. When the current is too large, the heating fuse 6 is blown, thereby disconnecting the heating circuit, forming a safety protection mechanism.

[0090] like Figure 1 and Figure 2As shown, in order to protect the heating fuse 6 and facilitate replacement of the heating fuse 6, the shell 1 also includes a second sealing cover 13, and a second mounting port is provided on the upper surface of the shell body 11. The heating fuse 6 is installed inside the shell 1 through the second mounting port, and the second sealing cover 13 is covered on the second mounting port.

[0091] like Figure 1 and Figure 2 As shown, the heating fuse 6 is located above the third relay 203 or the fourth relay 204 to form a stacked structure, thereby reducing the size occupied by the device in the horizontal plane and reducing the volume.

[0092] like Figure 1-Figure 5 As shown, the power battery high voltage control device also includes a Hall sensor 7, which is arranged in the housing 1 and sleeved on the conductive bar of the negative second terminal 400, and the interface 71 of the Hall sensor 7 is installed on the outer surface of the housing 1. The Hall sensor 7 is connected to the external controller through the interface 71 to monitor the current flowing through the conductive bar, and then the charge and discharge amount can be calculated. The controller can also cut off the input circuit to form a protection mechanism when the current monitored by the Hall sensor 7 is too large.

[0093] like Figure 1-Figure 4 As shown, a high-voltage interface 8 is installed on the PCB board 3, and the high-voltage interface 8 is used to connect to the battery management system to realize the control of the heating circuit and the sampling of the high-voltage circuit.

[0094] like Figure 1-Figure 4 As shown, a low-voltage control interface 9 is installed on the PCB board 3, which is used to be electrically connected to the battery management system and to control the low-voltage coils of the first relay, the second relay, the third relay and the fourth relay to cut off or connect the relevant high-voltage circuits.

[0095] The power battery high-voltage control device is an integrated control system that can be arranged in a battery pack. The positive first terminal 100 and the negative first terminal 300 are used to be electrically connected to an external module, and the positive second terminal 200 and the negative second terminal 400 are used to be electrically connected to a battery module, so that the internal layout of the device is compact and reasonable. All relay control circuits are routed through a PCB board and output to the outside through the end socket of the PCB board, so that there are no wires in the system and the structure is neat and simple.

[0096] This embodiment also discloses a power battery high voltage control system, which includes the power battery high voltage control device as described above.

[0097] This embodiment also discloses an electric vehicle, which includes the power battery high-voltage control device as described above.

[0098] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A power battery high voltage control device, characterized in that: It comprises a shell, a relay and a PCB board installed in the shell, one end of the relay is provided with a pin, the PCB board is attached to the end of the relay provided with the pin, and the relay is welded and electrically connected to the PCB board through the pin.

2. The power battery high voltage control device according to claim 1, characterized in that: The relay comprises a first relay, wherein the first relay has a first connection end and a second connection end at one end opposite to the pin, wherein the first connection end is electrically connected to the positive first terminal through a conductive bar, and the second connection end is electrically connected to the positive second terminal through another conductive bar; And / or, the relay includes a second relay, and the second relay has a first connection end and a second connection end at an end opposite to the pin, the first connection end is electrically connected to the first terminal of the negative electrode through a conductive bar, and the second connection end is electrically connected to the second terminal of the negative electrode through another conductive bar.

3. The power battery high voltage control device according to claim 2, characterized in that: The power battery high-voltage control device further includes a charging fuse, which is arranged on a passage between the first positive electrode terminal and the second positive electrode terminal, and the charging fuse is arranged in the housing and away from a side edge of the PCB board; And / or, the power battery high-voltage control device also includes a Hall sensor, which is arranged in the shell and sleeved on the conductive bar of the second negative terminal, and the interface of the Hall sensor is installed on the outer surface of the shell.

4. The power battery high voltage control device according to claim 3, characterized in that: The housing comprises a housing body and a first sealing cover, the upper surface of the housing body is provided with a first mounting opening, the charging fuse is installed inside the housing through the first mounting opening, and the first sealing cover is covered on the first mounting opening; And / or, the positive first terminal and the negative first terminal arranged side by side are located between the positive second terminal and the negative second terminal, and the positive first terminal, the negative first terminal and the positive second terminal, the negative second terminal are staggered in the width direction of the shell; And / or, the positive first terminal and the negative first terminal arranged side by side are located between the positive second terminal and the negative second terminal, and the positive first terminal, the negative first terminal and the positive second terminal, the negative second terminal are staggered in the height direction of the shell; And / or, the positive first terminal and the negative first terminal are arranged near the middle of the shell, and the positive second terminal and the negative second terminal are arranged at two ends of the shell respectively.

5. The power battery high voltage control device according to claim 3, characterized in that: The PCB board is also provided with a pre-charging circuit, and the relay further includes a third relay, and the third relay is installed on the pre-charging circuit; And / or, a heating circuit is provided on the PCB board, and the relay further includes a fourth relay, and the fourth relay is installed on the heating circuit.

6. The power battery high voltage control device according to claim 5, characterized in that: A pre-charging resistor is also installed on the pre-charging circuit. The pre-charging resistor is installed on the PCB board through a pin arranged at the bottom thereof, and the pre-charging resistor and the relay are located on the same side of the PCB board.

7. The power battery high voltage control device according to claim 6, characterized in that: The pre-charging resistor is arranged in the housing and close to the edge of the PCB board; And / or, the pre-charging resistor is located directly below the charging fuse.

8. The power battery high voltage control device according to claim 5, characterized in that: The heating circuit is also provided with a heating fuse, which is arranged in the shell and located in the area surrounded by the projections of the first positive terminal, the first negative terminal, the second positive terminal and the second negative terminal in the vertical direction.

9. The power battery high voltage control device according to claim 8, characterized in that: The housing comprises a housing body and a second sealing cover, the upper surface of the housing body is provided with a second mounting opening, the heating fuse is mounted inside the housing through the second mounting opening, and the second sealing cover is covered on the second mounting opening; And / or, the heating fuse is located above the third relay or the fourth relay.

10. The power battery high voltage control device according to claim 1, characterized in that: The PCB board is provided with a high voltage interface for electrically connecting to a battery management system; And / or, a low-voltage control interface is installed on the PCB board for electrically connecting to a battery management system.

11. An electric vehicle, characterized in that: It includes a power battery high voltage control device as described in any one of claims 1-10.

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