Power distribution device and vehicle

Abstract

The utility model discloses a power distribution device and a vehicle, the power distribution device comprises an inductance unit arranged in the power distribution device, a first end of the inductance unit is used for being connected with a battery pack of the vehicle, a second end of the inductance unit is used for being connected with a controller of the vehicle, and the power distribution device is used for realizing distribution of electric energy and transmission of signals. According to the power distribution device and the vehicle, self-heating of the battery can be better achieved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a power distribution device and a vehicle. Background Art

[0002] At present, new energy vehicles usually reuse the windings in the vehicle motor as power inductors to achieve self-heating of the battery. The disadvantages are that certain noise will be generated at the motor and the windings do not dissipate heat well.

[0003] Therefore, improvements are needed to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, according to a first aspect of the present utility model, a power distribution device is provided, comprising:

[0006] The inductor unit is arranged in the power distribution device, the first end of the inductor unit is used to connect to the battery pack of the vehicle, and the second end of the inductor unit is used to connect to the controller of the vehicle. The power distribution device is used to realize the distribution of electric energy and the transmission of signals.

[0007] Exemplarily, the inductor unit includes a power inductor and a first contactor, the first end of the power inductor is used to connect to the battery pack, the second end of the power inductor is electrically connected to the first end of the first contactor, and the second end of the first contactor is used to connect to the controller.

[0008] Exemplarily, the saturation inductance of the power inductor is 1.4mH-1.6mH;

[0009] The rated current of the power inductor is 340A-360A;

[0010] The withstand voltage of the power inductor is greater than or equal to 1500V.

[0011] Exemplarily, the power distribution device further includes a power distribution unit and a box, wherein the power distribution unit and the inductance unit are arranged in the box, the first end of the power distribution unit is used to connect to the battery pack of the vehicle, and the second end of the power distribution unit is used to connect to the controller.

[0012] Exemplarily, the box body includes a first box body and a second box body stacked along a first direction;

[0013] The inductor unit is arranged in the first layer box;

[0014] The power distribution unit is arranged in the second layer box.

[0015] Exemplarily, the first layer of the housing is provided with a power inductor mounting groove, the power inductor is arranged in the power inductor mounting groove, and a potting compound is filled between the power inductor and the power inductor mounting groove;

[0016] The first contactor is adjacent to the power inductor mounting slot.

[0017] Exemplarily, the first layer of the box body is provided with a cooling liquid circulation chamber, a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both communicated with the cooling liquid circulation chamber;

[0018] The cooling liquid circulation chamber is located at the bottom of the three power inductor installation grooves.

[0019] Exemplarily, the power distribution unit includes a first positive contactor, a first negative contactor, a first fuse and a second fuse;

[0020] The first fuse and the second fuse are arranged in parallel;

[0021] The first positive contactor is electrically connected to the first fuse and is adjacent to the first fuse;

[0022] The first negative contactor is electrically connected to the second fuse and is adjacent to the second fuse.

[0023] Exemplarily, the power distribution unit further includes a second positive contactor, a second negative contactor, a second contactor, and a third contactor;

[0024] The second positive contactor is arranged in parallel with the first positive contactor and is electrically connected to the first fuse;

[0025] The second negative contactor is arranged in parallel with the first negative contactor and is electrically connected to the second fuse;

[0026] The second contactor and the third contactor are arranged in parallel and are both electrically connected to the first end of the inductor unit.

[0027] Exemplarily, the power distribution device also includes a fourth contactor, which is arranged in the first layer box body, adjacent to the inductance unit, the first end of the fourth contactor is electrically connected to the second end of the inductance unit, and the second end of the fourth contactor is used to connect to the vehicle's drive motor.

[0028] According to a second aspect of the utility model, a vehicle is provided, which comprises the power distribution device as described above.

[0029] According to the power distribution device and vehicle of the utility model, by integrating the inductance unit in the power distribution device, it can be effectively utilized for self-heating of the battery, reducing the noise of the battery self-heating, and the inductance unit is arranged in the power distribution device to better dissipate heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following drawings of the present application are hereby used as part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, and are used to explain the device and principle of the present application. In the drawings,

[0031] Figure 1 is a schematic diagram of the overall structure of a power distribution device according to an embodiment of the present application;

[0032] Figure 2 for Figure 1 An exploded schematic diagram of the power distribution device in FIG.

[0033] Figure 3 for Figure 1 Schematic diagram of the structure of the first layer of the box;

[0034] Figure 4 for Figure 1 Schematic diagram of the structure of the second layer box;

[0035] Figure 5 for Figure 1 A circuit diagram of a power distribution device in;

[0036] Figure 6 Schematic diagram of a circuit of a power distribution device according to an embodiment of the present application. DETAILED DESCRIPTION

[0037] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0038] It should be understood that the present application can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present application to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0039] It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below can be represented as a second element, component, region, layer or part.

[0040] Spatially relative terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein for convenience of description to describe the relationship of one element or feature to other elements or features shown in the figures. It should be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation shown in the figures.

[0041] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0042] Embodiments of the utility model are described herein with reference to schematic diagrams as ideal embodiments (and intermediate structures) of the present application. In this way, variations in the shapes shown due to, for example, manufacturing techniques and / or tolerances can be expected. Therefore, the embodiments of the present application should not be limited to the specific shapes shown herein, but include shape deviations due to, for example, manufacturing. Therefore, what is shown in the figures is schematic in nature, and their shapes are not intended to display the actual shape of the device and are not intended to limit the scope of the present application.

[0043] See attached Figure 1-5 An exemplary description is given of a power distribution device 10 according to an embodiment of the present application. The power distribution device is applied to a vehicle, such as a pure electric vehicle or a hybrid electric vehicle.

[0044] The power distribution device 10 includes an inductor unit 300, which is disposed in the power distribution device 10. The first end of the inductor unit 300 is used to connect to the battery pack of the vehicle, and the second end of the inductor unit 300 is used to connect to the controller 20 of the vehicle. The power distribution device 10 is used to realize the distribution of electric energy and the transmission of signals. Exemplarily, the power distribution device 10 may be a high-voltage distribution box, which is used to realize the distribution of electric energy of the battery pack and the transmission of control signals of the controller 20. The controller 20 may be a motor controller.

[0045] By integrating the inductor unit 300 in the power distribution device 10, it can be effectively utilized for self-heating of the battery, reducing the noise of the battery self-heating, and the inductor unit 300 is arranged in the power distribution device 10 to better dissipate heat.

[0046] In this embodiment, the inductor unit 300 includes three power inductors (i.e., power inductor 310, power inductor 320 and power inductor 330) and three first contactors (i.e., first contactor 410, first contactor 420 and first contactor 430), the first ends of the three power inductors are used to connect to the battery packs (i.e., the first battery pack 40 and the second battery pack 50), the second ends of the three power inductors are electrically connected to the first ends of the three first contactors, and the second ends of the three first contactors are used to connect to the controller 20 and the vehicle's drive motor 30.

[0047] In this embodiment, the power distribution device 10 further includes a power distribution unit 200, a first end of the power distribution unit 200 is used to connect the battery pack of the vehicle (i.e., the first battery pack 40 and the second battery pack 50), and a second end of the power distribution unit 200 is used to connect the controller 20. The power distribution unit 200 may be a high-voltage power distribution unit (Power Distribution Unit, PDU). The controller may obtain electrical energy from the battery pack through the power distribution unit 200, and the controller may also receive external power supply to charge the battery pack through the power distribution unit 200.

[0048] Thus, when the three first contactors are all disconnected, the controller 30 is connected to the battery pack through the high-voltage distribution unit on the one hand, and is connected to the drive motor 30 on the other hand. The controller can obtain direct current from the battery pack and convert it into alternating current to drive the drive motor 30 to work. When the three first contactors are all turned on, the controller 30 is connected to the battery pack through the distribution unit 200 on the one hand, and is connected to the battery pack through three first contactors and three power inductors on the other hand. The controller can control the battery pack to self-heat. Specifically, the battery pack includes a first half pack and a second half pack (the first battery pack 40 includes a first half pack 41 and a second half pack 42, and the second battery pack 50 includes a first half pack 51 and a second half pack 52), and the controller 30 has three bridge arms arranged in parallel, and the two ends of the three bridge arms are respectively connected to the positive electrode of the first half pack and the negative electrode of the second half pack through the distribution unit 200, and the midpoints of the three bridge arms are respectively connected to the negative electrode of the first half pack and the positive electrode of the second half pack through three first contactors and three power inductors. By controlling the on and off of the switch tubes in the three bridge arms, the first half pack and the second half pack can be charged and discharged mutually, and the battery internal resistance can be used to achieve self-heating of the battery. It should be noted that the specific implementation method of battery self-heating is known to those skilled in the art, and is not the invention point of this application, and will not be described in detail here.

[0049] The present application integrates three power inductors and three first contactors in the power distribution device 10, and can use the power distribution device 10 to achieve self-heating of the battery. There is no need to reuse the winding inductance in the vehicle motor to achieve self-heating of the battery, which can effectively avoid noise generated in the motor when the battery self-heats, and the power inductor is set in the power distribution device to better dissipate heat.

[0050] Exemplarily, the saturated inductance of the power inductor is 1.4mH-1.6mH, the rated current of the power inductor is 340A-360A, and the withstand voltage of the power inductor is greater than or equal to 1500V. Thus, the power inductor can withstand the large current during battery self-heating, ensuring the safety of battery self-heating.

[0051] In some other embodiments, the inductor unit 300 may include only a power inductor (e.g., power inductor 310) and a first contactor (e.g., first contactor 410), wherein the first end of the power inductor is used to connect to the battery pack, the second end of the power inductor is electrically connected to the first end of the first contactor, and the second end of the first contactor is used to connect to the controller 20 and the vehicle's drive motor 30.

[0052] In this embodiment, the power distribution device 10 further includes a box body 100 , and the power distribution unit 200 and the inductance unit 300 are both disposed in the box body 100 .

[0053] Specifically, the box body 100 includes a first direction (ie Figure 1The first layer box 110 and the second layer box 120 are stacked in the vertical direction, and the second layer box 120 is detachably connected to the first layer box 110. The inductor unit 300 is arranged in the first layer box 110, and the distribution unit 200 is arranged in the second layer box 120. By dividing the box into two layers, the space can be maximized, the layout can be reduced, and the distribution box can be given a sense of hierarchy, making the distribution box more concise and beautiful in appearance.

[0054] In this embodiment, the first layer box 110 includes a first box body 111 and a first cover plate 112. The first box body includes a first bottom plate and a side wall surrounding the first bottom plate in a circumferential direction. A first opening 1111 is provided on one side of the first box body. The first cover plate 112 is detachably connected to the first box body 111 and covers the first opening 1111. The second layer box 120 is detachably connected to the top of the first layer box 111. The second layer box 120 includes a second box body 121, a top cover 122 and a second cover plate 123. The second box body 121 includes a bottom plate and a side wall surrounding the bottom plate in a circumferential direction. The top cover 122 is detachably connected to the top of the side wall. A second opening 1211 is provided on one side of the second box body 121. The second cover plate 123 is detachably connected to the second box body 122 and covers the second opening 1211.

[0055] In this embodiment, a power inductor mounting slot 1112 is provided in the first layer of the housing 110, and three power inductors (i.e., power inductor 310, power inductor 320, and power inductor 330) are arranged in parallel in the power inductor mounting slot 1112, and potting glue is filled between the three power inductors and the power inductor mounting slot 1112. A large amount of heat is generated when the power inductor is working. The power inductor is arranged in the power inductor mounting slot 1112, and the gap is filled with potting glue, and the air is replaced as a new heat-conducting medium, which can ensure the electrical gap and maximize the use of the first layer of the housing 110 to conduct the heat generated by the power inductor, so as to ensure that the power inductor will not burn due to temperature rise or excessive temperature under normal working conditions. The three power inductors are uniformly placed in one slot and arranged in parallel (i.e., the directions of the inductor input and output ends are consistent), which can ensure that the power inductors do not affect each other, and at the same time, the potting degree of each pair of power inductors is consistent to the greatest extent, so as to avoid the inconsistent potting degree causing a certain power inductor to fail more easily. It should be noted that each of the power inductors 310 , 320 and 330 may be just one inductor, or may be formed by combining a plurality of inductors in series or in parallel.

[0056] In this embodiment, the first layer of the box 110 is provided with a cooling liquid circulation chamber, a liquid inlet 1113 and a liquid outlet 1114, and the liquid inlet 1113 and the liquid outlet 1114 are both connected to the cooling liquid circulation chamber, and the cooling liquid circulation chamber is located on the side of the three power inductors away from the second layer of the box 120. Specifically, the cooling liquid circulation chamber can be located at the bottom of the power inductor mounting groove 1112, and the cooling liquid from the outside of the distribution box can enter the cooling liquid circulation chamber through the liquid inlet 1113, and then leave the cooling liquid circulation chamber from the liquid outlet 1114. The cooling liquid can cool the power inductor 310, the power inductor 320 and the power inductor 330, so as to ensure that the power inductor will not burn out due to temperature rise or excessive temperature under normal working conditions.

[0057] In this embodiment, the power distribution unit 200 includes a first positive contactor 210, a first negative contactor 230, a first fuse, a second fuse, a second positive contactor 250, and a second negative contactor 260. Among them, there are two first fuses, namely, the first fuse 221 and the first fuse 222; there are two second fuses, namely, the second fuse 241 and the second fuse 242. The first fuse and the second fuse are arranged in parallel, that is, the first fuse 221, the first fuse 222, the first fuse 221 and the first fuse 222 are adjacent to each other and parallel, and their positive ends face the same direction, and the negative ends also face the same direction. In some other embodiments, there may be only one first fuse and one second fuse. The first end of the first positive contactor 210 is electrically connected to the first ends of the first fuse 221 and the first fuse 222, the second end of the first positive contactor 210 is used to connect to the positive electrode of the first half pack 41, and the second ends of the first fuse 221 and the first fuse 222 are used to connect to the controller 20. The first end of the first negative contactor 230 is electrically connected to the first ends of the second fuse 241 and the second fuse 242, the second end of the first negative contactor 230 is used to connect to the negative electrode of the second half pack 42, and the second ends of the second fuse 241 and the first fuse 242 are connected to the controller 20. The first end of the second positive contactor 250 is electrically connected to the first ends of the first fuse 221 and the first fuse 222, and the second end of the second positive contactor 250 is used to connect to the positive electrode of the first half pack 51. The first end of the second negative contactor 260 is electrically connected to the first ends of the second fuse 241 and the second fuse 242, and the second end of the second negative contactor 260 is used to be connected to the negative electrode of the second half package 52. In this embodiment, the power distribution unit 200 also includes a second contactor 600 and a third contactor 700. The first end of the second contactor 600 is electrically connected to the second ends of the three power inductors (i.e., the power inductor 310, the power inductor 320, and the power inductor 330), and the second end of the second contactor 600 is used to be electrically connected to the negative electrode of the first half package 41 and the positive electrode of the second half package 42. The first end of the third contactor 700 is electrically connected to the second ends of the three power inductors, and the second end of the second contactor 600 is used to be electrically connected to the negative electrode of the first half package 51 and the positive electrode of the second half package 52.

[0058] Thus, by controlling the on and off of the first positive contactor 210 , the first negative contactor 230 , the second positive contactor 250 , the second negative contactor 260 , the second contactor 600 and the third contactor 700 , self-heating of the first battery pack 40 and the second battery pack 50 can be achieved.

[0059] See attached Figure 6In some other embodiments, the power distribution unit 200' can be used to electrically connect with the controller 30 and the first battery pack 40, and the power distribution unit 200' can only include the first positive contactor 210, the first negative contactor 230, the first fuse 221 and the second fuse 241, and the specific connection method is the same as the above embodiment, which will not be repeated here. The second ends of the three power inductors (i.e., power inductor 310, power inductor 320 and power inductor 330) are used to electrically connect with the negative electrode of the first half pack 41 and the positive electrode of the second half pack 42.

[0060] In this embodiment, the first positive contactor 210, the first negative contactor 230, the first fuse, the second fuse, the second positive contactor 250, the second negative contactor 260, the second contactor 600 and the third contactor 700 are all arranged in the second layer box 120. By arranging them in layers with three power inductors (i.e., power inductor 310, power inductor 320 and power inductor 330) and three first contactors (i.e., first contactor 410, first contactor 420 and first contactor 430), the space of the two layers of boxes can be effectively utilized to avoid mutual influence. In some other embodiments, the first positive contactor 210, the first negative contactor 230, the first fuse, the second fuse, the second positive contactor 250, the second negative contactor 260, the second contactor 600 and the third contactor 700 can be at least partially arranged in the first layer box 110.

[0061] In this embodiment, the power distribution unit 200 further includes copper bars 2001-2010, the first end of the first positive contactor 210 is electrically connected to the first ends of the first fuse 221 and the first fuse 222 through the copper bar 2005, the second end of the first positive contactor 210 is connected to the copper bar 2006, the second end of the first fuse 221 and the second end of the first fuse 222 are respectively connected to the copper bar 2001 and the copper bar 2002. The first end of the first negative contactor 230 is electrically connected to the first ends of the second fuse 241 and the second fuse 242 through the copper bar 2008, the second end of the first negative contactor 230 is connected to the copper bar 2009, the second end of the second fuse 241 and the second end of the first fuse 242 are respectively connected to the copper bar 2003 and the copper bar 2004. The first end of the second positive contactor 250 is electrically connected to the first end of the first fuse 221 and the first fuse 222 through the copper bar 2005, and the second end of the second positive contactor 250 is connected to the copper bar 2006. The first end of the second negative contactor 260 is electrically connected to the first end of the second fuse 241 and the second fuse 242 through the copper bar 2008, and the second end of the second negative contactor 260 is connected to the copper bar 2010. The distribution box also includes copper bar 810, copper bar 820 and copper bar 830, the first end of the second contactor 600 is electrically connected to the second ends of the three power inductors (that is, power inductor 310, power inductor 320 and power inductor 330) through the copper bar 810, and the second end of the second contactor 600 is connected to the copper bar 820. The first end of the third contactor 700 is electrically connected to the second ends of the three power inductors through the copper bar 810, and the second end of the second contactor 600 is connected to the copper bar 840.

[0062] In this embodiment, the second positive contactor 250 and the first positive contactor 210 are arranged in parallel, that is, the two are close to each other and arranged in parallel, the first ends of the two are located in the same direction, the second ends of the two are located in the same direction, and the second positive contactor 250 and the first positive contactor 210 are both adjacent to the first fuse, thereby reducing the length of the copper bus 2005, reducing costs, and making the layout more regular and compact.

[0063] The first negative contactor 230 and the second negative contactor 260 are arranged in parallel, that is, the two are close to each other and arranged in parallel, the first ends of the two are located in the same direction, the second ends of the two are located in the same direction, and the first negative contactor 230 and the second negative contactor 260 are both adjacent to the second fuse, thereby reducing the length of the copper bus 2008, reducing costs, and making the layout more regular and compact.

[0064] The second contactor 600 and the third contactor 700 are arranged in parallel, that is, they are close to each other and arranged in parallel, their first ends are located in the same direction, and their second ends are located in the same direction. Such an arrangement can make the layout more regular and compact.

[0065] Copper busbar 2001, copper busbar 2003, copper busbar 2003, and copper busbar 2003 are arranged in parallel, and plug-in assembly 1212, plug-in assembly 1213, plug-in assembly 1214, and plug-in assembly 1215 are arranged on one side of the first box body 121, and copper busbar 2001, copper busbar 2003, copper busbar 2003, and copper busbar 2003 are respectively connected to plug-in assembly 1212, plug-in assembly 1213, and plug-in assembly 1214. Copper busbar 2006, copper busbar 2007, copper busbar 2008, copper busbar 2009, copper busbar 2010, copper busbar 820 and copper busbar 830 are arranged in parallel and close to the second opening 1211. Connection holes are provided on the bottom plate of the second box body 121 at positions corresponding to copper busbar 2006, copper busbar 2007, copper busbar 2008, copper busbar 2009, copper busbar 2010, copper busbar 820 and copper busbar 830. External wiring harnesses can be connected to the above-mentioned copper buses through the connection holes, and the second cover plate 123 can be opened to operate the connection between the above-mentioned copper buses and the wiring harnesses.

[0066] In this embodiment, the power distribution device 10 further includes three fourth contactors (i.e., fourth contactor 510, fourth contactor 520, fourth contactor 530), the first ends of the three fourth contactors are respectively electrically connected to the second ends of the three first contactors (i.e., first contactor 410, first contactor 420, and first contactor 430), and the second ends of the three fourth contactors are used to connect the drive motor 30. The three fourth contactors can be disconnected when the battery is self-heating to prevent the current from entering the drive motor 30 when the battery is self-heating. The three fourth contactors are all arranged in the first layer box 110.

[0067] In this embodiment, the power distribution device 10 further includes copper bars 801-809. The first ends of the three first contactors are electrically connected to the first ends of the three power inductors through copper bars 801, 802, and 803. The three first contactors are adjacent to the power inductor mounting slots, thereby effectively reducing the lengths of the copper bars 801, 802, and 803, thereby effectively reducing the cost and making the layout more compact.

[0068] The first ends of the three fourth contactors are electrically connected to the second ends of the three first contactors (i.e., the first contactor 410, the first contactor 420, and the first contactor 430) through copper bars 804, 805, and 806, respectively, and the second ends of the three fourth contactors are connected to copper bars 807, 808, and 809. The three fourth contactors are adjacent to the inductor unit 300, i.e., adjacent to the three first contactors, so that the lengths of the copper bars 804, 805, and 806 can be effectively reduced, the cost can be reduced, and the layout can be made more regular and compact.

[0069] Copper busbar 804, copper busbar 805, copper busbar 806, copper busbar 807, copper busbar 808, and copper busbar 809 are arranged in parallel. Connection holes are provided on the bottom plate of the first box body 111 at positions corresponding to copper busbar 804, copper busbar 805, copper busbar 806, copper busbar 807, copper busbar 808, and copper busbar 809. External wiring harnesses can be connected to the above-mentioned copper buses through the connection holes, and the first cover plate 112 can be opened to operate the connection between the above-mentioned copper buses and the wiring harnesses.

[0070] In some other embodiments, at least one of a DC-DC converter, a drive motor controller and an air compressor controller is further disposed in the first layer box 110 and / or the second layer box 120 .

[0071] The present application also provides a vehicle, which includes the power distribution device as described above. The vehicle may also include a battery pack, a controller and a drive motor connected to the power distribution device. The vehicle may be a pure electric vehicle or a hybrid electric vehicle.

[0072] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0073] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0074] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various utility model aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with features less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0075] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0076] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0077] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. A power distribution device, characterized in that: include: An inductor unit is arranged in the power distribution device, a first end of the inductor unit is used to connect to a battery pack of a vehicle, a second end of the inductor unit is used to connect to a controller of the vehicle, and the power distribution device is used to realize the distribution of electric energy and the transmission of signals.

2. The power distribution device according to claim 1, characterized in that: The inductor unit includes a power inductor and a first contactor, wherein a first end of the power inductor is used to connect to the battery pack, a second end of the power inductor is electrically connected to a first end of the first contactor, and a second end of the first contactor is used to connect to the controller.

3. The power distribution device according to claim 2, characterized in that: The saturation inductance of the power inductor is 1.4mH-1.6mH; The rated current of the power inductor is 340A-360A; The withstand voltage of the power inductor is greater than or equal to 1500V.

4. The power distribution device according to any one of claims 2 to 3, characterized in that: The power distribution device also includes a power distribution unit and a box body, wherein the power distribution unit and the inductance unit are arranged in the box body, the first end of the power distribution unit is used to connect to the battery pack of the vehicle, and the second end of the power distribution unit is used to connect to the controller.

5. The power distribution device according to claim 4, characterized in that: The box body comprises a first box body and a second box body stacked along a first direction; The inductor unit is arranged in the first layer box; The power distribution unit is arranged in the second layer box.

6. The power distribution device according to claim 5, characterized in that: The first layer of the box body is provided with a power inductor mounting groove, the power inductor is arranged in the power inductor mounting groove, and a potting glue is filled between the power inductor and the power inductor mounting groove; The first contactor is adjacent to the power inductor mounting slot.

7. The power distribution device according to claim 6, characterized in that: The first layer of the box body is provided with a cooling liquid circulation chamber, a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both communicated with the cooling liquid circulation chamber; The cooling liquid circulation chamber is located at the bottom of the three power inductor installation grooves.

8. The power distribution device according to claim 5, characterized in that: The power distribution unit includes a first positive contactor, a first negative contactor, a first fuse and a second fuse; The first fuse and the second fuse are arranged in parallel; The first positive contactor is electrically connected to the first fuse and is adjacent to the first fuse; The first negative contactor is electrically connected to the second fuse and is adjacent to the second fuse.

9. The power distribution device according to claim 8, characterized in that: The power distribution unit further includes a second positive contactor, a second negative contactor, a second contactor and a third contactor; The second positive contactor is arranged in parallel with the first positive contactor and is electrically connected to the first fuse; The second negative contactor is arranged in parallel with the first negative contactor and is electrically connected to the second fuse; The second contactor and the third contactor are arranged in parallel and are both electrically connected to the first end of the inductor unit.

10. The power distribution device according to claim 5, characterized in that: The power distribution device also includes a fourth contactor, which is arranged in the first layer box and adjacent to the inductor unit. The first end of the fourth contactor is electrically connected to the second end of the inductor unit, and the second end of the fourth contactor is used to connect to the vehicle's drive motor.

11. A vehicle, characterized in that: Comprising the power distribution device as described in any one of claims 1-10.

Images