High-voltage box, power battery thereof and electric vehicle

Abstract

The utility model discloses a high-voltage box (30), a power battery thereof and an electric vehicle, the high-voltage box (30) is used for being electrically connected between a power battery system and a driving system of the electric vehicle, and the high-voltage box (30) comprises a shell (3), a shell (3) of the high-voltage box (30) is provided with a transfer connector (33) connected with a power battery system, a power transmission connector (32) electrically connected with a driving system and a charging socket (31) matched with a charging gun (50) in an inserted mode, the high-voltage box (30) is directly matched with the charging gun (50) in an inserted mode, adapter cables are saved, the number of connectors is reduced, meanwhile, the part cost and potential quality hazards are reduced, and the service life of the high-voltage box (30) is prolonged. The power battery adopting the high-voltage box has the advantages of being easy to maintain and higher in energy density, and the electric vehicle adopting the power battery has longer endurance mileage.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy vehicle technical field especially, a kind of high voltage box and power battery and electric vehicle thereof. BACKGROUND

[0002] New energy electric vehicle is more environmentally friendly compared with traditional fuel truck, and operating cost is not affected by oil price fluctuations, more conducive to cost control, the existing new energy electric vehicle usually uses power battery to provide electric energy, and high voltage box is used to manage whole vehicle high voltage distribution, but the high voltage box in prior art is generally arranged in power battery or inside electric vehicle, then it is connected to charging interface through cable, for example, the high voltage box disclosed in Chinese utility model patent No.CN210182526U published on March 24, 2020 and Chinese utility model patent No.CN219833052U published on October 13, 2023, both do not configure the connector of charging gun, that is to say, the existing high voltage box needs to be connected through cable when charging power battery.

[0003] On the other hand, the existing electric vehicle, such as electric truck, usually uses the way of combining frame and vehicle frame to fix and install the battery with large volume on the vehicle frame, such as the rear battery box of mine truck disclosed in Chinese utility model patent No.CN220963592U announced on May 14, 2024, the battery box uses frame assembly to support battery assembly, and socket support is arranged on the load beam of frame assembly, which means that the high voltage box between charging hole and battery assembly is integrated in the battery box, which is not conducive to arranging the battery cells compactly, and is not convenient for maintenance and repair of the high voltage box, and the probability of failure increases due to too many wiring connectors, and the weight of frame assembly itself cannot be ignored because frame assembly has certain requirements on structural strength, that is to say, the existing high voltage box, power battery and electric vehicle still have room for improvement in space distribution and overall weight. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a high voltage box, which directly sets the charging interface matched with the charging gun on the high voltage box, saving the material of adapter cable and reducing the number of connectors.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A high voltage box is provided for electrically connecting between power battery system and drive system of electric vehicle, the high voltage box includes a housing, the housing of the high voltage box is provided with a transfer connector connected with the power battery system, a power transmission connector electrically connected with the drive system, and a charging socket matched with the connector of the charging gun.

[0007] Further, the charging socket comprises a socket, and a protective cover is arranged outside the socket, and the protective cover is movably connected to the shell and is used for opening or closing the socket.

[0008] Further, the charging socket comprises a socket, and a protective cover is arranged outside the socket, and the protective cover is movably connected to the shell and is used for opening or closing the socket.

[0009] The utility model discloses a power battery, and the high voltage box is separated from the power battery and externally arranged, which is beneficial to the maintenance of the power battery while obtaining higher energy density.

[0010] To achieve the above object, the utility model adopts the following technical scheme:

[0011] The utility model provides a power battery is installed on the frame of electric vehicle, the power battery includes the battery compartment for depositing battery system, the bottom of battery compartment is installed on the frame, the power battery still includes the high voltage box as described above that can be detachably installed on the bottom of battery compartment and is located at one side of frame, and the side of high voltage box that is installed with charging socket is towards the outside of electric vehicle.

[0012] Further, the battery compartment comprises a shell, the shell comprises a bottom plate on which the high voltage box is installed, the bottom plate is provided with an avoiding gap on the side close to the high voltage box, and the transfer joint and the battery system are electrically connected through a second cable.

[0013] Further, the shell of the battery compartment is provided with an end plate on the side on which the high voltage box is installed, and a wiring space is arranged between the end plate and the battery system.

[0014] Further, the wiring space and the avoiding gap are vertically aligned.

[0015] Further, a step is formed between the battery compartment and the high voltage box, the height of the step is equal to the thickness of the high voltage box, and the length of the charging socket extending outwardly beyond the high voltage box is not more than the width of the step.

[0016] Further, the electric vehicle comprises a driving system, the power transmission joint of the high voltage box is electrically connected to the driving system through a first cable, and the first cable is partially fixed to the frame.

[0017] The utility model also discloses an electric vehicle, which has a vehicle head and a frame, and the frame is provided with the power battery.

[0018] By adopting the foregoing technical scheme, the utility model has the beneficial effects that:

[0019] 1. The high-voltage box and the charging gun are matched, and the adapter cable between the high-voltage box and the charging gun is omitted, the number of joints is reduced, the cost and hidden danger are reduced, and the safety is improved.

[0020] 2. By setting the high-voltage box independently outside the battery compartment, the maintenance is more convenient.

[0021] 3. The battery compartment can be more compact, the frame support is cancelled, the power battery is more lightweight, the higher energy density is obtained, and the electric vehicle using the power battery has longer endurance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of the high-voltage box matched with the charging gun according to the present application;

[0023] Figure 2 is a perspective view of the power battery according to the first embodiment of the present application;

[0024] Figure 3 is a perspective view of the power battery from another angle as shown in Figure 2

[0025] Figure 4 is a perspective view of the power battery from another angle as shown in Figure 2

[0026] Figure 5 is a perspective view of the power battery from another angle as shown in Figure 4

[0027] Figure 6 is a front view of the power battery as shown in Figure 2

[0028] Figure 7 is a side view of the power battery as shown in Figure 2

[0029] Figure 8 is a perspective view of the high-voltage box from another angle as shown in Figure 1

[0030] Figure 9 is a perspective view of the high-voltage box from another angle as shown in Figure 1

[0031] Figure 10 is a perspective view of the power battery according to the second embodiment of the present application. DETAILED DESCRIPTION

[0032] ​​​​​​​The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary, and are intended to explain the present application, and should not be understood as limiting the present application.

[0033] In the description of the present application, unless explicitly defined and limited otherwise, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless explicitly defined and limited otherwise, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] The technical scheme of the present application is further illustrated below by combining the drawings and through specific embodiments.

[0036] Please refer to Figure 1 and Figure 8 and Figure 9As shown, the utility model provides a kind of high pressure box 30, with shell 3, the high pressure box 30 is used to cooperate with power battery 100, for the high voltage power distribution of electric vehicle is managed, specifically, the high pressure box 30 is used to be electrically connected between power battery system and the drive system of electric vehicle, with complete high voltage distribution, protect high voltage system, monitor high voltage state, charge management and realize control signal communication etc.Function.In the first embodiment of the utility model, exemplary, the shell 3 of the high pressure box 30 includes top wall 302, and bottom wall 303 being oppositely arranged with top wall 302, front side wall 301 being connected between top wall 302 and bottom wall 303, rear side wall 305, and two end walls 304 being oppositely arranged at both ends of front side wall 301 and rear side wall 305, the front side wall 301 is equipped with the charging socket 31 matched with the external charging gun 50, the top wall 302 of the high pressure box 30 or the end wall 304 or the front side wall 301 is equipped with relay connector 33, and the relay connector 33 is connected inside power battery by cable, why the relay connector 33 is arranged on top wall 302 or end wall 304 or front side wall 301 is because the operation space on the three faces is more optimal, and it is more convenient to insert and assemble cable.In other some embodiments, the high pressure box 30 can also be made into round box, or irregular shape with more sides, but the essential feature is still that the high pressure box 30 is equipped with the charging socket 31 matched with the external charging gun 50, here without too much description to the shape of shell 3.

[0037] Preferably, the charging socket 31 is at least two, one of which is used for fast charging connector plugging, and one is used for slow charging connector plugging, and in some scenarios, one fast charging connector and two slow charging connectors can also be provided, and the number and type of charging sockets 31 can be flexibly configured according to the scene, which will not be described here. Further, the charging socket 31 comprises a plug port 310, and the plug port 310 is externally provided with a protective cover which can protect the plug port 310. Specifically, for example, a second protective cover 312 is provided on the front side wall 301, and the second protective cover 312 is movably connected to the front side wall 301 of the shell 3 by a chain 313 or a hinge connection, etc. The second protective cover 312 is used to open when the charging socket 31 needs to be plugged into the charging gun 50, or to close the plug port after charging is completed, to play a dustproof and waterproof role, to protect the plug-in terminal in the plug port from being damaged, and to improve the service life. The chain 313 is preferably flexible, one end of the chain 313 is fixedly connected to the shell 3, and the other end is fixedly connected with the second protective cover 312, which can prevent the second protective cover 312 from being lost. It should be pointed out that although a separate second protective cover 312 is provided for a separate charging socket 31 in the embodiment, in some other embodiments, the protective cover can also protect multiple charging sockets 31 at the same time, and more preferably, it can also be provided with double protection, for example Figure 10 As shown in the foregoing embodiment, a protective plate can be rotatably provided on the outside of the shell 3 as a first protective cover 311 for protecting all charging sockets 31, and the first protective cover 311 is movably connected to the front side wall 301 of the shell 3, for example, by a hinge (not numbered). The advantage of this design is that the first protective cover 311 can also be used to protect other elements such as the manual service disconnect (MSD) near the charging socket 31, which will not be described here.

[0038] Please refer to Figures 2 to 7 The utility model embodiment further provides a power battery 100, the power battery 100 includes the battery compartment 10 for depositing battery system (not shown), the bottom of battery compartment 10 is installed on the frame 200, preferably, adopts support 21 and fixes battery compartment 10 on the frame 200, the power battery 100 further includes the above-mentioned high voltage box 30 that can be detachably installed at the bottom of battery compartment 10 and is located at one side of frame 200, at this time, the high voltage box 30 includes the front side wall 301 that is away from frame 200 and sets up outward and the rear side wall 305 that sets up opposite and faces frame 200 with the front side wall 301, as described above, at least one charging socket 31 is provided on the front side wall 301 of high voltage box 30.

[0039] Since the high-voltage box 30 is exposed to the outside of the battery compartment 10, preferably, the top wall 302, the bottom wall 303, the end wall 304, and the front side wall 301 and the rear side wall 305 are all made of steel plate, which has good hardness to protect the components inside the high-voltage box 30 and support the charging socket 31 that needs to be plugged and unplugged by the charging gun 50, meeting the rigidity requirement. In some special cases, if the power battery 100 is required to have a lighter overall mass, the box body of the high-voltage box 30 can also be made of plastic or aluminum alloy and the like.

[0040] Further, the end wall 304 or the rear wall 305 of the high-voltage box 30 is provided with a power transmission connector 32, and the first cable (not shown) is inserted into the power transmission connector 32 and is locally fixedly connected to the vehicle frame 200. Through the first cable, the electric energy of the battery system can be transmitted to the power-consuming unit (not shown) installed on the vehicle frame 200 or to the power-consuming unit (not shown) located in the vehicle head (not shown), which includes a driving motor, various electronic instruments, vehicle lamps, etc. The transfer connector 33 is inserted with the second cable, and the second cable is in electrical communication with the battery system located in the battery compartment 10. That is to say, the battery system in the battery compartment 10 can transmit power to the high-voltage box 30 through the second cable, and then through the transfer of the high-voltage box 30 and the use of the aforementioned first cable to power the power-consuming unit such as the driving motor (not shown) installed on the vehicle frame 200. When the power battery 100 needs to be charged, the external charging gun 50 is inserted into the charging socket 31, and through the transfer of the high-voltage box 30 and the second cable, power can be supplemented to the battery system.

[0041] Further, the battery compartment 10 has a bottom plate 103 for installing the high-voltage box 30, and the bottom plate 103 is provided with an avoiding gap 121 on the side close to the high-voltage box 30, and the second cable is connected to the transfer connector 33 of the battery system and the high-voltage box 30 through the avoiding gap 121. The top wall 302 of the high-voltage box 30 is outwardly extended in the horizontal direction around the side, and at least two installation parts 306 are spaced apart from each other, and preferably, the installation parts 306 are further outwardly extended on the four corners of the top wall 302. The installation parts 306 are provided with through holes (not numbered) or clamping grooves (not shown), and the high-voltage box 30 is detachably connected with the bottom of the battery compartment 10 through the bolts (not numbered) penetrating through the through holes or clamping grooves of the installation parts 306, specifically, the high-voltage box 30 can be detachably connected with the bottom plate 103 of the bottom of the battery compartment 10, or can be detachably connected with the reinforcing ribs (not numbered) on both sides of the bottom plate 103.

[0042] As Figure 6As shown, a step 13 is formed between the battery compartment 10 and the high-voltage box 30, the height H of the step 13 is equal to the thickness of the high-voltage box 30, the charging socket 31 extends outwardly beyond the front side wall 301 of the high-voltage box 30 to facilitate the external charging gun to be plugged in, the length of the charging socket 31 extending outwardly beyond the front side wall 301 of the high-voltage box 30 does not exceed the width W of the step 13, which is designed to have the benefits that the charging socket 31 is of a hidden design and is not easy to be damaged, and the charging socket 31 has a certain rainproof effect under the shielding of the battery compartment 10. Preferably, a protective plate (not shown) is arranged on the front side wall 301 of the high-voltage box 30, which can play a waterproof and dustproof role on the charging socket 31, and the protective plate is preferably installed on the front side wall 301 in a hinged manner and is reversibly installed, for example, a vertical rotating pin is arranged on either side of the front side wall 301, and one side of the protective plate is rotatably installed on the rotating pin, so that the protective plate can be opened or closed in a horizontal direction; similarly, a horizontal rotating pin is arranged on the upper side of the front side wall 301, and the upper edge of the protective plate is rotatably installed on the rotating pin, so that the protective plate can be automatically closed under the action of gravity.

[0043] In the embodiment, the battery compartment 10 is preferably composed of a plurality of battery modules 11 arranged in a vertical stack, the battery module 11 has a side plate 111 made of an aluminum alloy material, and the battery compartment 10 has an outer shell 110, the front side and the rear side of the outer shell 110 are respectively formed by splicing a plurality of side plates 111. It is worth mentioning that the front side and the rear side of the outer shell 110 respectively refer to the two largest side surfaces perpendicular to the frame 200, the front side of the outer shell 110 of the battery compartment 10 is defined relative to the forward direction of the frame 200, and the front side wall 301 of the high-voltage box 30 is defined according to the operation direction during charging, although they are both called "front", but the directions are not consistent, and further, since the high-voltage box 30 according to the utility model is generally used in cooperation with the battery compartment 10, the top wall 301 of the high-voltage box 30 refers to the side facing the battery system in the battery compartment 10, in other words, assuming that the high-voltage box 30 is installed on the rear side of the battery compartment 10, the top wall 301 and the bottom wall 303 are actually located in a vertical plane. In other embodiments, the outer shell 110 of the battery compartment 10 can also be independently surrounded around the battery system, at this time, since the side plate 111 of the battery module 11 does not need to be exposed, it can be omitted or designed by subtractive method, and the outer shell 110 of the battery compartment 10 is preferably made of an aluminum alloy plate.

[0044] The shell 110 is detachably provided with an end plate 12 on one side of the high-voltage box 30, the end plate 12 is provided with a wiring space 130 between the battery system, the wiring space 130 has a downward opening and is aligned with the aforementioned avoiding gap 121. The battery system includes a plurality of layers of battery assemblies (not shown) in the embodiment, each layer of battery assembly is connected to each other by wires, and further, cooling water channels (not shown) are further provided between each layer of battery assembly, each cooling water channel is connected to each other by pipes on the side facing the end plate 12, the wiring space 130 is used to accommodate the aforementioned wires and pipes, etc., by providing the end plate 12, a more beautiful appearance can be obtained, and at the same time, the end plate 12 can be removed to maintain each wiring and water joint.

[0045] It is worth noting that the power battery 100 provided in the above embodiment of the utility model adopts the scheme of placing the high-voltage box 30 at the bottom, and in other embodiments, the high-voltage box 30 can obviously be arranged at the front side or the rear side of the battery compartment 10, or the high-voltage box 30 can also be arranged inside the battery compartment 10 but the front side wall 301 of the high-voltage box 30 is exposed from the battery compartment 10 to facilitate the plug-in charging gun 50, in these embodiments, only the position of the mounting portion 306 needs to be adjusted to relatively fix the high-voltage box 30 and the battery compartment 10, in one embodiment, the high-voltage box 30 is arranged inside the battery compartment 10, and only the front side wall 301 is exposed, which can also be applied to the scheme of the battery replacement battery, that is, the power battery 100 and the vehicle frame 200 are detachably connected at this time, which will not be described here.

[0046] The utility model embodiment further provides an electric vehicle, the electric vehicle includes a vehicle head (not shown) and a vehicle frame 200, the vehicle frame 200 is fixedly installed with the power battery 100 as described above, because the design scheme of the high-voltage box 30 is independently arranged outside, when the high-voltage box 30 is maintained, the whole battery compartment 10 does not need to be disassembled, which is more convenient for later maintenance, and because the arrangement of high-voltage accessories does not need to be considered between the battery systems, a more compact internal space layout of the battery compartment 10 can be obtained, therefore the power battery 100 can have a higher energy density, the electric vehicle using the power battery 100 runs more safely and reliably, and has a longer cruising range.

[0047] The above embodiments only illustrate the basic principles and characteristics of the utility model, the utility model is not limited by the above embodiments, various changes and changes of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and changes all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high voltage box (30) for electrically connecting between a power battery system and a drive system of an electric vehicle, the high voltage box (30) comprising a housing (3), characterized in that, The shell (3) of the high-voltage box (30) is provided with a transfer connector (33) connected with the power battery system, a power transmission connector (32) electrically connected with the driving system, and a charging socket (31) matched with the charging gun (50).

2. The high pressure pod (30) of claim 1, characterized by: The charging socket (31) comprises a connector port (310), and a protective cover is arranged outside the connector port (310) and movably connected to the shell (3), and the protective cover is used for opening or closing the connector port (310).

3. The high pressure pod (30) of claim 2, characterized by: The charging socket (31) comprises a first protective cover (311) covering multiple charging sockets (31) and a second protective cover (312) covering each charging socket (31) respectively.

4. A power battery (100) mounted on a vehicle frame (200) of an electric vehicle, the power battery (100) comprising a battery compartment (10) for storing a battery system, a bottom of the battery compartment (10) being mounted on the vehicle frame (200), characterized in that, The power battery (100) further comprises the high-voltage box (30) as claimed in any one of claims 1 to 3, which is detachably installed at the bottom of the battery compartment (10) and located at one side of the frame (200), and the side of the high-voltage box (30) where the charging socket (31) is installed faces the outside of the electric vehicle.

5. The power cell (100) according to claim 4, characterized in that: The battery compartment (10) comprises a shell (110), and the shell (110) comprises a bottom plate (103) where the high-voltage box (30) is installed, and the bottom plate (103) is provided with an avoiding gap (121) at the side close to the high-voltage box (30), and the transfer connector (33) and the battery system are electrically connected through a second cable, and the second cable passes through the avoiding gap (121).

6. The power cell (100) according to claim 5, characterized in that: The shell (110) of the battery compartment (10) is provided with an end plate (12) at the side where the high-voltage box (30) is installed, and the end plate (12) and the battery system are provided with a wiring space (130).

7. The power cell (100) according to claim 6, characterized in that: The wiring space (130) and the avoiding gap (121) are vertically aligned.

8. The power cell (100) of claim 4, characterized in that: A step (13) is formed between the battery compartment (10) and the high-voltage box (30), the height of the step (13) is equal to the thickness of the high-voltage box (30), and the length of the charging socket (31) extending outwardly beyond the high-voltage box (30) does not exceed the width of the step.

9. The power cell (100) of claim 4, characterized in that: The electric vehicle comprises a driving system, the power transmission connector (32) of the high-voltage box (30) and the driving system are electrically connected through a first cable, and the first cable is partially fixedly connected to the frame (200).

10. An electric vehicle having a vehicle head and a vehicle frame (200), characterized by, The frame (200) is provided with the power battery (100) as claimed in any one of claims 4 to 9.

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