Heat conduction component, distribution box, power battery pack and vehicle

Abstract

The utility model provides a heat conduction component, a distribution box, a power battery pack and a vehicle. The thermally conductive member includes a cover body and a first thermally conductive contact portion. The cover body is connected with the first heat conduction contact part. The cover body is adapted to connect to a heat exchanger. The first heat-conducting contact part is suitable for being connected to a heating component of the distribution box. According to the utility model, the heat dissipation of the heating component can be realized, so that the influence of the distribution box on the charging rate can be reduced.

Description

Technical Field

[0001] The utility model generally relates to the technical field of batteries, and more specifically to a heat-conducting component, a distribution box, a power battery pack and a vehicle. Background Art

[0002] The high-voltage distribution box of the relevant electric vehicles includes electrical components such as contactors, pre-charging relays, pre-charging resistors, shunts, fuses and copper busbars. There is resistance between these electrical components themselves and between their contact points. When high-power fast charging is performed, these electrical components will generate a lot of heat during the transmission of large currents, causing the temperature to rise rapidly. In particular, the location of the contactor output, as a larger heat-generating component and heat accumulation point, the maximum temperature can reach over 100°C. Excessive temperature will cause the performance of the distribution box to deteriorate, and will also affect the connected battery cells, thereby affecting the charging efficiency and even bringing safety risks. Utility Model Content

[0003] 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.

[0004] In order to at least partially solve the above problems, the first aspect of the utility model provides a heat-conducting component, which includes a cover body and a first heat-conducting contact portion, the cover body and the first heat-conducting contact portion are connected, the cover body is suitable for connecting to a heat exchanger, and the first heat-conducting contact portion is suitable for connecting to a heat-generating component of a distribution box.

[0005] According to the heat-conducting component of the utility model, when installed in the distribution box, it is connected to the shell of the distribution box through the cover body, and is connected to the heat-generating component of the distribution box through the first heat-conducting contact portion, so as to achieve heat dissipation of the heat-generating component, thereby helping to reduce the influence of the distribution box on the charging rate.

[0006] Optionally, the first heat-conducting contact portion comprises a supporting boss, the supporting boss is connected to the cover body, the supporting boss protrudes from one side of the cover body in a thickness direction of the cover body, and the supporting boss is suitable for approaching or connecting to the heat-generating component.

[0007] Optionally, the support boss and the cover body are constructed as an integral cover portion.

[0008] Optionally, the supporting boss includes a first protrusion and a second protrusion, and the first protrusion and the second protrusion have different thicknesses.

[0009] Optionally, the first thermally conductive contact portion further comprises a flexible thermally conductive portion, which is constructed as a soft structure capable of transferring heat, is connected to a side of the support boss away from the cover body in the thickness direction, and is suitable for connecting to the heat-generating component.

[0010] Optionally, the flexible heat-conducting portion includes at least two heat-conducting bodies spaced apart from each other, or the flexible heat-conducting portion is constructed as a continuous integral structure.

[0011] Optionally, the first heat conducting contact portion is configured as a soft structure capable of transferring heat.

[0012] Optionally, the heat conducting component further includes a second heat conducting contact portion, and the first heat conducting contact portion and the second heat conducting contact portion are spaced apart from each other.

[0013] Optionally, the cover body is constructed as a structure made of one of epoxy resin, polypropylene, and nylon plastic.

[0014] A second aspect of the utility model provides a distribution box, which includes the above-mentioned heat-conducting component.

[0015] According to the distribution box of the second aspect of the utility model, by applying the above-mentioned heat-conducting components, effective heat dissipation of the distribution box can be achieved, thereby reducing the influence of the distribution box on the charging rate, which is beneficial for the applicable power battery pack to adapt to the demand for charging with a larger current.

[0016] Optionally, the distribution box includes:

[0017] a housing including an opening; and

[0018] a heat generating component, part of which is located at the opening;

[0019] The cover body is connected to the housing, the first heat-conducting contact portion is arranged corresponding to the opening portion, and the first heat-conducting contact portion is connected to the heat-generating component.

[0020] Optionally, the heat generating component includes:

[0021] A contactor is located inside the housing, the contactor comprises a copper bar, and the first heat-conducting contact portion is connected to the copper bar.

[0022] Optionally, the opening is located at the upper part of the shell, the opening passes through a surface of the shell facing outward along a first direction, and the opening passes through a top surface of the shell along a height direction, the first direction is perpendicular to the height direction, and the height direction is parallel to a thickness direction of the cover body.

[0023] The cover body is connected to an upper portion of the housing.

[0024] Optionally, the cover body protrudes from the top surface of the shell in the height direction; or

[0025] The cover body is flush with the top surface of the housing in the height direction.

[0026] Optionally, the shell includes two openings, the two openings are spaced apart along a second direction, and the second direction is perpendicular to the first direction and the height direction of the shell;

[0027] The contactor comprises a positive copper bar and a negative copper bar, and the positive copper bar and the negative copper bar are respectively arranged at the two openings.

[0028] Optionally, the shell includes a bottom shell and an upper cover, the upper cover is arranged on the open end of the bottom shell, the bottom shell is provided with a first notch, the upper cover is provided with a second notch, and the first notch and the second notch are arranged corresponding to each other to form the opening.

[0029] Optionally, the heat-conducting component includes a first heat-conducting contact portion and a second heat-conducting contact portion, the first heat-conducting contact portion and the second heat-conducting contact portion are respectively arranged at the two opening portions, the first heat-conducting contact portion is connected to the positive copper busbar, and the second heat-conducting contact portion is connected to the negative copper busbar.

[0030] A third aspect of the present invention provides a power battery pack, which includes the above-mentioned distribution box.

[0031] The power battery pack according to the third aspect of the utility model can be charged with a larger current by applying the above-mentioned distribution box, which is beneficial to improve the charging efficiency, and further can meet the user's demand for fast charging to improve the charging experience.

[0032] Optionally, the power battery pack further includes a heat exchanger, wherein the heat exchanger is connected to a cover portion of the heat-conducting component, and the heat exchanger is a direct cooling plate or a liquid cooling plate.

[0033] A fourth aspect of the utility model provides a vehicle, which includes the above-mentioned power battery pack.

[0034] According to the vehicle of the fourth aspect of the utility model, by applying the above-mentioned power battery pack, the charging time can be effectively reduced, thereby helping to improve the user's experience in energy replenishment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0036] Figure 1 A three-dimensional view of a distribution box according to a preferred embodiment of the utility model;

[0037] Figure 2 for Figure 1 An exploded perspective view of a distribution box is shown;

[0038] Figure 3 for Figure 1 A top view of the distribution box shown;

[0039] Figure 4 For along Figure 3 A cross-sectional view taken along line AA in FIG.

[0040] Figure 5 for Figure 4 An enlarged view of part I in FIG.

[0041] Figure 6 A three-dimensional view of a distribution box according to another preferred embodiment of the utility model;

[0042] Figure 7 for Figure 6 An exploded perspective view of the electrical distribution box shown; and

[0043] Figure 8 It is a three-dimensional view of a thermally conductive insulating member according to a preferred embodiment of the utility model.

[0044] Description of reference numerals:

[0045] 100: Distribution box 110: Housing

[0046] 110a: opening 111: bottom case

[0047] 111a: first gap 112: upper cover

[0048] 112a: Second gap 120: Copper busbar

[0049] 121: Positive copper busbar 122: Negative copper busbar

[0050] 130: heat conducting component 131: cover

[0051] 131a: Cover body 131b: Support boss

[0052] 131c: connecting boss 131d: avoidance space

[0053] 132: first heat-conducting contact portion 132a: flexible heat-conducting portion

[0054] 133: second heat-conducting contact portion D1: first direction

[0055] D2: Second direction D3: Height direction DETAILED DESCRIPTION

[0056] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0057] In order to fully understand the implementation of the present invention, a detailed structure will be presented in the following description. Obviously, the implementation of the implementation of the present invention is not limited to the specific details familiar to those skilled in the art.

[0058] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention, and the singular forms "a", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, integral bodies, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or combinations thereof.

[0059] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and similar expressions used in the present invention are for illustrative purposes only and are not limiting.

[0060] The "parallel" / "vertical" and similar expressions used in the present invention include an absolute parallel / vertical relationship and a roughly parallel / vertical relationship (for example, a relationship that differs from absolute parallel / vertical by -5° to +5°), which can have the same effect.

[0061] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. These drawings show representative embodiments of the present invention and are not intended to limit the present invention.

[0062] With the accelerated implementation of electrification in the automotive industry, users' acceptance of electric vehicles continues to increase, but charging issues are still the primary factor affecting users' purchase of electric vehicles. Fast charging technology can further shorten charging time, improve charging efficiency, and greatly alleviate users' anxiety about using cars. It is an important development direction of electric vehicle charging technology. The core of fast charging is to increase the charging power of the entire vehicle.

[0063] The high-voltage distribution box of electric vehicles mainly includes electrical components such as main contactors, pre-charging relays, pre-charging resistors, shunts, fuses and copper busbars. Among them, the main contactor is used to connect the battery cells. The main contactor includes a main positive contactor and a main negative contactor. There is resistance between these electrical components themselves and between their contact points. When high-power fast charging is performed, these components will generate a lot of heat during the transmission of high currents, causing the temperature to rise rapidly. In particular, the position of the contactor output, as the largest heat-generating component and heat accumulation point, the maximum temperature can reach 120°C.

[0064] Most distribution boxes in the related art do not perform special treatment on heat dissipation, and basically dissipate heat by natural cooling. Usually, the distribution box has dustproof, waterproof and other sealing design requirements, so that the inside of the distribution box is a relatively closed space. This hinders the flow of air between the inside and outside of the distribution box, which slows the heat exchange between the inside and outside of the distribution box, and further makes it impossible for the heated electrical components to be cooled down in a timely and effective manner during the fast charging process, which causes the heat to continue to accumulate. When the temperature is too high, it will not only cause the performance of the electrical components in the distribution box to decline, but also affect the battery cells connected to the distribution box, thereby affecting the charging efficiency of the entire vehicle and even bringing safety risks.

[0065] In order to solve the above problems, the utility model provides a heat conducting component, a distribution box, a power battery pack and a vehicle. The heat conducting component can be applied to the distribution box, which can increase the heat dissipation area of ​​the distribution box on the one hand, and can be connected to a heat exchanger such as a direct cooling plate or a liquid cooling plate through the heat conducting component, thereby obtaining a more efficient and sufficient heat dissipation effect.

[0066] The following will refer to Figures 1 to 8 The examples shown provide a detailed description of the heat-conducting component, the distribution box and the power battery pack according to the present invention.

[0067] According to the utility model, the heat-conducting component 130 may include a cover body 131a and a first heat-conducting contact portion 132. The cover body 131a is connected to the first heat-conducting contact portion 132. The cover body 131a is suitable for connecting to a heat exchanger (not shown). The cover body 131a can also be suitable for connecting to the housing 110 of the distribution box 100. The first heat-conducting contact portion 132 is suitable for connecting to the heat-generating component of the distribution box 100. The heat-generating component may be, for example, a copper bus 120. The copper bus 120 may specifically be a contact of an electrical device such as a contactor or a relay, or may be another conductive element connected to a contact of an electrical device such as a contactor or a relay. Further, the heat-generating component may be, for example, a copper bus 120 such as a positive copper bus 121, a negative copper bus 122, and at least one of other heat-generating components. In the example where the distribution box 100 includes a positive copper bar 121 and a negative copper bar 122, the first heat-conducting contact portion 132 can be connected to only one of the positive copper bar 121 and the negative copper bar 122, and the first heat-conducting contact portion 132 can also be connected to both the positive copper bar 121 and the negative copper bar 122 at the same time. Among them, the positive copper bar 121 can be configured as a contact of a positive contactor, or the positive copper bar 121 can be connected to a contact of a positive contactor. Similarly, the negative copper bar 122 can be configured as a contact of a negative contactor, or the negative copper bar 122 can be connected to a contact of a negative contactor. The positive contactor mentioned here can be, for example, a main positive contactor, and the negative contactor can be, for example, a main negative contactor.

[0068] According to the heat-conducting component 130 of the utility model, when installed in the distribution box 100, it is connected to the shell of the distribution box 100 through the cover body 131a, and is connected to the heat-generating component of the distribution box 100 through the first heat-conducting contact portion 132, so as to achieve heat dissipation of the heat-generating component, thereby helping to reduce the influence of the distribution box 100 on the charging rate.

[0069] Optionally, the first heat-conducting contact portion 132 protrudes from the outer surface of the cover body 131a along the thickness direction of the cover body 131a. The thickness direction may be parallel to the height direction D3 to be described below. In the case where the heat-generating component and the cover body 131a are arranged at intervals, by adopting this technical means, the first heat-conducting contact portion 132 can fill the interval area between the heat-generating component and the cover body 131a, so that the first heat-conducting contact portion can reliably connect the heat-generating component, thereby achieving heat exchange with the heat-generating component.

[0070] Alternatively, the cover body 131a may be configured as a hard structure capable of heat transfer and insulation.

[0071] In one example, the first heat-conducting contact portion 132 may include a support boss 131b. The support boss 131b is connected to the cover body 131a. The support boss 131b protrudes from one side of the cover body in the thickness direction of the cover body 131a. The support boss is suitable for approaching or connecting to a heat-generating component. That is, the support boss 131b can be indirectly connected to the heat-generating component through other structures, thereby achieving heat exchange with the heat-generating component. Alternatively, the support boss 131b can be directly connected to the heat-generating component to directly exchange heat with the heat-generating component.

[0072] Optionally, the support boss 131b and the cover body 131a can be constructed as an integrated cover portion 131. It can be understood here that the support boss 131b and the cover body 131a are made of the same material and are integrally formed by casting, injection molding, etc. Alternatively, the support boss 131b and the cover body 131a are first manufactured separately and then assembled together by welding or the like. The integrated cover portion 131 can reduce the number of parts, thereby facilitating the improvement of assembly efficiency, and can also improve the strength of the connection structure between the support boss 131b and the cover body 131a.

[0073] In the example shown in the figure, the supporting boss 131 b is a part of the cover portion 131 .

[0074] Optionally, the support boss 131b includes a first protrusion (not shown) and a second protrusion (not shown). The thickness of the first protrusion and the second protrusion is different. The first protrusion and the second protrusion here can be understood as two different parts in the support boss 131b. In other words, the thickness of different parts of the support boss 131b can be different. That is, the surface of the support boss 131b facing the heat-generating component can be uneven. When applied to the scene where the surface of the heat-generating component is uneven, the uneven surface of the support boss 131b is an adaptive design, which is conducive to ensuring the consistency of the spacing between each part of the support boss 131b and the heat-generating component. When the support boss 131b is used to directly contact the heat-generating component, such a design makes the surface of the support boss 131b and the heat-generating component more fitted, thereby increasing the heat exchange area of ​​the support boss 131b and the heat-generating component, thereby improving the heat exchange efficiency.

[0075] In addition, the first heat-conducting contact portion 132 may further include a flexible heat-conducting portion 132a. The flexible heat-conducting portion 132a may be constructed as a soft structure capable of transferring heat. The flexible heat-conducting portion 132a is connected to the side of the support boss 131b away from the cover body in the thickness direction. The flexible heat-conducting portion 132a is suitable for connecting to a heat-generating component. Here, the heat-generating component is connected via the flexible heat-conducting portion 132a, and the characteristic of the flexible heat-conducting portion 132a being able to adaptively deform is utilized so that the flexible heat-conducting portion 132a can better fit the surface of the heat-generating component, thereby further increasing the heat exchange area between the first heat-conducting contact portion 132 and the heat-generating component, thereby improving the heat exchange efficiency.

[0076] Optionally, the flexible heat-conducting portion 132a here may be a heat-conducting pad.

[0077] Optionally, the flexible heat-conducting portion 132a may include at least two heat-conducting bodies (not shown) spaced apart from each other. Alternatively, the flexible heat-conducting portion 132a may be constructed as a continuous, integrated structure.

[0078] In another example, the first heat-conducting contact portion 132 may be constructed as a soft structure capable of transferring heat. That is, the support boss 131b may not be provided on the cover body 131a. Compared with the example with the support boss 131b, the first heat-conducting contact portion 132 of this embodiment is larger in the thickness direction of the cover body 131a, and more material is required to manufacture the first heat-conducting contact portion 132. Of course, when the first heat-conducting contact portion 132 is made of a suitable material, the thermal conductivity of the first heat-conducting contact portion 132 may be better than the thermal conductivity of the combination of the support boss 131b and the flexible heat-conducting portion 132a.

[0079] Optionally, the first heat-conducting contact portion 132 is constructed as a structure made of heat-conducting soft glue. The use of heat-conducting soft glue can help the first heat-conducting contact portion 132 to better fit the surface of the copper bus 120, so as to increase the contact area and improve the heat exchange efficiency. The heat-conducting soft glue here can be heat-conducting silica gel, heat-conducting rubber, heat-conducting silicone rubber and heat-conducting structural glue.

[0080] In some examples, the first thermally conductive contact portion 132 can contact heat-generating components located at different positions simultaneously.

[0081] In addition, the heat conducting component 130 may further include a second heat conducting contact portion 133. The first heat conducting contact portion 132 and the second heat conducting contact portion 133 are spaced apart from each other. Here, the first heat conducting contact portion 132 and the second heat conducting contact portion 133 may be used to connect heat generating components located at different positions, respectively, so as to perform targeted heat exchange.

[0082] In one example, the first heat-conducting contact portion 132 and the second heat-conducting contact portion 133 may have the same structure, which is beneficial to improving the interchangeability and versatility of the first heat-conducting contact portion 132 and the second heat-conducting contact portion 133 .

[0083] In another example, the structures of the first heat-conducting contact portion 132 and the second heat-conducting contact portion 133 may be different. When the heat-generating components at different positions of the distribution box 100, such as the positive copper bar and the negative copper bar, have different structures, the structural features of the first heat-conducting contact portion 132 and the second heat-conducting contact portion 133 may be specifically designed and produced to better fit the heat-generating components at the corresponding positions, thereby achieving a better heat exchange effect.

[0084] Optionally, the cover body 131a can be constructed as a structure made of one of epoxy resin, polypropylene, and nylon plastic. For example, the cover 131 can be made of a one-dimensional or two-dimensional composite material with high thermal conductivity. Specifically, the cover 131 can be made by directional molding of the one-dimensional or two-dimensional composite material, so that a large number of complete heat conduction paths can be constructed in the direction from the copper bus 120 to the heat exchanger, so that the cover 131 has an ultra-high thermal conductivity in this direction, for example, up to 10W / mK or more. In addition, the one-dimensional or two-dimensional composite material itself has insulation capabilities.

[0085] Optionally, the cover 131 can be constructed as any composite structure of epoxy resin, polypropylene, and nylon plastic. Any composite here can be understood as that the cover 131 can be any two or any three of epoxy resin, polypropylene, and nylon plastic attached to each other in a stacked form to achieve composite, and the stacking order can be set as needed. Among them, the nylon plastic can be PA6 nylon plastic.

[0086] In other examples, the cover 131 may also be made of non-insulating materials such as metal and undergo insulation modification and surface treatment, so that the finished product of the cover 131 has good insulation capability.

[0087] Optionally, the heat generating component may be a copper bus 120 of a contactor.

[0088] exist Figure 2 , Figure 7 as well as Figure 8 In the example shown, the distribution box 100 includes a positive copper bar 121 and a negative copper bar 122. The above-mentioned first heat-conducting contact portion 132 is used to connect the positive copper bar 121. The above-mentioned second heat-conducting contact portion 133 is used to connect the negative copper bar 122. The surface of the positive copper bar 121 facing upward in the height direction D3 includes multiple surfaces with inconsistent heights. The first heat-conducting contact portion 132 includes at least two positive heat conductors spaced from each other. In this way, the first heat-conducting contact portion 132 can better adapt and fit the surface of the positive copper bar 121, thereby increasing the contact area between the positive first heat-conducting contact portion 132a and the positive copper bar 121, thereby helping to improve the heat exchange efficiency. The surface of the negative copper bar 122 facing upward in the height direction D3 includes multiple surfaces with inconsistent heights. The second heat-conducting contact portion 133 includes at least two negative heat conductors spaced from each other. In this way, the second heat-conducting contact portion 133 can better adapt to and fit the surface of the negative copper bar 122, thereby increasing the contact area between the second heat-conducting contact portion 133 and the negative copper bar 122, thereby facilitating improving the heat exchange efficiency.

[0089] For example, the first heat-conducting contact portion 132 and the second heat-conducting contact portion 133 are spaced apart from each other. This is arranged based on the spacing between the positive copper bar 121 and the negative copper bar 122, so that the cost can be saved while ensuring the effective contact area between the first heat-conducting contact portion 132 and the positive copper bar 121, and the second heat-conducting contact portion 133 and the negative copper bar 122.

[0090] In other examples not shown, the first heat-conducting contact portion 132 and the second heat-conducting contact portion 133 are connected together, so that the first heat-conducting contact portion 132 and the second heat-conducting contact portion 133 can also transfer heat to each other, thereby improving the balance of heat dissipation.

[0091] See also Figure 8 For example, the above-mentioned cover 131 may also include a connecting boss 131c. The connecting boss 131c is connected between the supporting boss 131b corresponding to the positive first thermal contact portion 132a and the supporting boss 131b corresponding to the negative first thermal contact portion 132, so that the two parts of the supporting boss 131b are connected. In this way, the strength of the structure of the cover 131 can be improved, and the surface area of ​​the cover 131 is also increased. The connecting boss 131c and the two parts of the supporting boss 131b are enclosed on the cover body 131a to form an escape space 131d. The escape space 131d is suitable for escaping the part of the shell 110 located between the positive copper bus 121 and the negative copper bus 122.

[0092] See also Figures 1 to 8 The utility model further provides a distribution box. The distribution box 100 here can be understood as a high-voltage distribution box 100 suitable for a power battery pack. The distribution box 100 includes the above-mentioned heat-conducting component 130.

[0093] According to the distribution box 100 of the present invention, by applying the above-mentioned heat-conducting component 130, effective heat dissipation of the copper bus 120 can be achieved, thereby reducing the impact of the distribution box 100 on the charging rate, which is beneficial for the applicable power battery pack to adapt to the demand for charging with a larger current.

[0094] Optionally, the distribution box 100 may include a shell 110 and a heat-generating component. The shell 110 includes an opening. Part of the heat-generating component is located in the opening 110a. The cover body 131a is connected to the shell. The first heat-conducting contact portion is arranged corresponding to the opening 110a. And the first heat-conducting contact portion 132 is connected to the heat-generating component. By arranging the heat-generating component in the opening 110a of the shell, when the cover body 131a is connected to the shell 110, the heat-generating component can be connected using the first heat-conducting contact portion 132, thereby achieving heat exchange with the heat-generating component.

[0095] See also Figures 1 to 8Specifically, the distribution box 100 may include a housing 110 and a contactor (not shown). The housing 110 may include an opening 110a. The contactor is located inside the housing 110. The contactor includes a copper bar 120. The copper bar 120 here may be a heat-generating component. The copper bar 120 is located at the opening 110a. The copper bar 120 is suitable for connecting to the battery core. The cover 131 is connected to the housing 110. The first heat-conducting contact portion 132 is located at the opening 110a and connected to the copper bar 120. Here, it is connected to the housing 110 through the cover 131. The first heat-conducting contact portion 132 extends into the opening 110a and is connected to the copper bar 120. In the case where the copper bar 120 generates or conducts heat, the heat at the copper bar 120 can be transferred to the cover 131 through the first heat-conducting contact portion 132. By setting the opening 110a, the first heat-conducting contact part 132 can be avoided to allow the first heat-conducting contact part 132 to contact the copper bar 120 more, which is conducive to further increasing the contact area between the copper bar 120 and the first heat-conducting contact part 132. At the same time, the copper bar 120 is usually supported by a part of the shell 110 on the side of the opening 110a away from the first heat-conducting contact part 132. When the first heat-conducting contact part 132 and the shell 110 abut against the copper bar 120 in the height direction D3 of the distribution box 100, the copper bar 120 can be prevented from bending due to force bias, and at the same time, it is ensured that the copper bar 120 and the first heat-conducting contact part 132 are in good contact. The contactor here can be understood as a main contactor.

[0096] See also Figures 1 to 7 For example, the opening 110a is located at the upper part of the shell 110. The opening 110a penetrates to a surface of the shell 110 facing outward along the first direction D1. The opening 110a penetrates to the top surface of the shell 110 along the height direction D3. The first direction D1 is perpendicular to the height direction D3. It can be understood here that an edge of the top of the shell 110 is provided with an opening 110a. The copper bus 120 is arranged at the opening 110a. The cover 131 here is equivalent to a covering structure on the one hand, which can cover the opening 110a in the height direction D3, and on the other hand, it can achieve the purpose of heat transfer by connecting with the copper bus 120. In the structure shown in the figure, the outer shape of the shell 110 is a square three-dimensional structure. The first direction D1 can be understood as the width direction of the shell 110, and accordingly, the length direction of the shell 110 can be recorded as the second direction D2. Therefore, the heat-conducting component 130, as a cover plate above the copper bus 120, can provide electrical insulation and heat conduction at the same time.

[0097] Optionally, the cover portion 131 is connected to an upper portion of the housing 110 and protrudes from a top surface of the housing 110 .

[0098] In other examples not shown, the cover portion 131 may not exceed the top surface of the housing 110 when connected to the housing 110. For example, the cover portion 131 is flush with the top surface of the housing 110.

[0099] exist Figure 2 and Figure 7 In the example shown, the housing 110 may include two openings 110a. The two openings 110a are spaced apart along the second direction D2. The second direction D2 is perpendicular to the first direction D1 and the height direction D3 of the housing 110. The contactor may include a positive copper bar 121 and a negative copper bar 122. The positive copper bar 121 and the negative copper bar 122 are respectively arranged in the two openings 110a. By providing two openings 110a, the positive copper bar 121 and the negative copper bar 122 are arranged respectively, so that the two copper bars 120 can be isolated from each other in the physical space, thereby effectively preventing short circuits.

[0100] Optionally, the heat conducting component 130 may be connected to the housing 110 by means of an interlocking structure or bonding with an adhesive.

[0101] exist Figure 6 and Figure 7 In one example shown, the housing 110 may include a bottom shell 111 and an upper cover 112. An opening is formed at the top of the bottom shell 111. Electrical components or devices such as contactors are placed in the opening. The upper cover 112 is covered on the open end of the bottom shell 111 to close the opening. The bottom shell 111 is provided with a first notch 111a. The upper cover 112 is provided with a second notch 112a. The first notch 111a and the second notch 112a are arranged corresponding to each other to form an opening portion 110a. The opening portion 110a is formed by the first notch 111a provided on the bottom shell 111 and the second notch 112a located on the upper cover 112. This facilitates the processing and manufacturing of the bottom shell 111 and the upper cover 112 separately.

[0102] Further, the heat-conducting component 130 may include a first heat-conducting contact portion 132 and a second heat-conducting contact portion 133. The first heat-conducting contact portion 132 and the second heat-conducting contact portion 133 are respectively arranged at two opening portions 110a. The first heat-conducting contact portion 132 is connected to the positive copper bar 121. In this way, the first heat-conducting contact portion 132 can be connected to the surface of the positive copper bar 121 through the opening portion 110a, thereby increasing the contact area between the positive first heat-conducting contact portion 132a and the positive copper bar 121, thereby advantageously improving the heat exchange efficiency. The second heat-conducting contact portion 133 is connected to the negative copper bar 122. In this way, the second heat-conducting contact portion 133 can be connected to the surface of the negative copper bar 122 through the opening portion 110a, thereby increasing the contact area between the second heat-conducting contact portion 133 and the negative copper bar 122, thereby advantageously improving the heat exchange efficiency.

[0103] exist Figures 1 to 8In another example shown, the bottom shell 111 and the upper cover 112 of the housing 110 can be fixed as one body.

[0104] According to the utility model, the heat-conducting component 130 has support bosses 131b at both ends. The two support bosses 131b are respectively connected to the positive copper busbar 121 and the negative copper busbar 122. The lower surface of the support boss 131b is in contact with the upper surface of the positive copper busbar 121 and the negative copper busbar 122. The upper surface of the cover 131 is in contact with the liquid cooling plate / direct cooling plate in the battery thermal management system. The upper and lower contact surfaces of the cover 131 need to be filled with a heat-conducting structural adhesive to fill the gap between the contact surfaces, avoid hard contact between the structures, reduce the interface thermal resistance between the copper busbar 120 and the heat exchanger, and provide bonding strength to improve the stability of the heat-conducting component 130. The heat-conducting structural adhesive here is both a connecting structure and a first heat-conducting contact portion 132. In addition, the heat-conducting component 130 has a sufficiently large upper surface, which can increase the heat exchange area between the cold plate when connected to the cold plate. When the heat conducting component 130 has a higher thermal conductivity, the heat flux can be further increased, thereby improving the heat exchange effect.

[0105] The utility model can improve the heat dissipation efficiency of the distribution box 100 by adding a heat-conducting component 130 with higher thermal conductivity to the distribution box 100, thereby improving the distribution system's ability to withstand high temperatures caused by large currents and extending the time for large current rapid charging. The distribution box 100 of the utility model can be suitable for direct-cooled battery packs or liquid-cooled battery packs. When used in conjunction with a direct cooling plate or a liquid cooling plate for heat dissipation, it can effectively dissipate heat for the heating components of the distribution box 100 during high-power charging, thereby improving the charging efficiency of the battery. The heat-conducting component 130 of the utility model can be made of low-dimensional high-thermal-conductivity insulating materials to meet the distribution box 100's requirements for high-voltage insulation. The heat-conducting component 130 can be adapted to different distribution boxes 100, has low requirements for the structural design of the distribution box 100, and is highly practical.

[0106] The distribution box 100 of the utility model, when applied to a power battery pack, can combine the cooling of the distribution box 100 with the battery thermal management system so that the distribution box 100 and the battery thermal management system share a refrigerant, without having to add a new heat dissipation system separately for the distribution box 100, which is beneficial to maintaining the overall mode of the battery pack, and further promoting the integrated design of the thermal management system with the battery pack and the vehicle body.

[0107] The utility model further provides a power battery pack, which may include the above-mentioned distribution box 100 .

[0108] According to the power battery pack of the present invention, by applying the above-mentioned distribution box 100, it can be charged with a larger current, which is beneficial to improve the charging efficiency, and further can meet the user's demand for fast charging to improve the charging experience.

[0109] In addition, the power battery pack may further include a heat exchanger (not shown). The heat exchanger is connected to the cover portion 131 of the heat conducting component 130. The heat exchanger may be a direct cooling plate or a liquid cooling plate.

[0110] In other examples, the heat exchanger may also be other heat exchange structures other than the direct cooling plate or the liquid cooling plate.

[0111] The utility model also provides a vehicle (not shown). The vehicle may include the above-mentioned power battery pack.

[0112] According to the vehicle of the present invention, by applying the above-mentioned power battery pack, the charging time can be effectively reduced, thereby helping to improve the user's experience in energy replenishment.

[0113] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article may indicate that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0114] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A heat conducting component, characterized in that: The heat-conducting component comprises a cover body and a first heat-conducting contact portion, the cover body and the first heat-conducting contact portion are connected, the cover body is suitable for being connected to a heat exchanger, and the first heat-conducting contact portion is suitable for being connected to a heat-generating component of a distribution box.

2. The heat conducting component according to claim 1, characterized in that: The first heat-conducting contact portion includes a supporting boss connected to the cover body, the supporting boss protruding from one side of the cover body in a thickness direction of the cover body, and the supporting boss is suitable for approaching or connecting to the heat-generating component.

3. The heat conducting component according to claim 2, characterized in that: The support boss and the cover body are constructed as an integrated cover portion.

4. The heat conducting component according to claim 2, characterized in that: The supporting boss includes a first protrusion and a second protrusion, and the first protrusion and the second protrusion have different thicknesses.

5. The heat conducting component according to claim 2, characterized in that: The first heat-conducting contact portion further comprises a flexible heat-conducting portion, which is configured as a soft structure capable of transferring heat, is connected to a side of the support boss away from the cover body in the thickness direction, and is suitable for being connected to the heat-generating component.

6. The heat conducting component according to claim 5, characterized in that: The flexible heat-conducting portion includes at least two heat-conducting bodies spaced apart from each other, or the flexible heat-conducting portion is constructed as a continuous integral structure.

7. The heat conducting component according to claim 1, characterized in that: The first heat conducting contact portion is configured as a soft structure capable of transferring heat.

8. The heat conducting component according to any one of claims 1 to 7, characterized in that: The thermally conductive component further includes a second thermally conductive contact portion, and the first thermally conductive contact portion and the second thermally conductive contact portion are spaced apart from each other.

9. The heat conducting component according to any one of claims 1 to 7, characterized in that: The cover body is constructed of a structure made of one of epoxy resin, polypropylene and nylon plastic.

10. A distribution box, characterized in that: The distribution box comprises the heat conducting component according to any one of claims 1 to 9.

11. The distribution box according to claim 10, characterized in that: The distribution box comprises: a housing including an opening; and a heat generating component, part of which is located at the opening, The cover body is connected to the housing, the first heat-conducting contact portion is arranged corresponding to the opening portion, and the first heat-conducting contact portion is connected to the heat-generating component.

12. The distribution box according to claim 11, characterized in that: The heat generating component comprises: A contactor is located inside the housing, the contactor comprises a copper bar, and the first heat-conducting contact portion is connected to the copper bar.

13. The distribution box according to claim 12, characterized in that: The opening is located at the upper part of the shell, the opening passes through a surface of the shell facing outward along a first direction, and the opening passes through a top surface of the shell along a height direction, the first direction is perpendicular to the height direction, and the height direction is parallel to a thickness direction of the cover body, The cover body is connected to an upper portion of the housing.

14. The distribution box according to claim 13, characterized in that: The cover body protrudes from the top surface of the shell in the height direction; or The cover body is flush with the top surface of the housing in the height direction.

15. The distribution box according to claim 12, characterized in that: The shell comprises two openings, the two openings are spaced apart along a second direction, and the second direction is perpendicular to the first direction and the height direction of the shell; The contactor comprises a positive copper bar and a negative copper bar, and the positive copper bar and the negative copper bar are respectively arranged at the two openings.

16. The distribution box according to claim 12, characterized in that: The shell includes a bottom shell and an upper cover, wherein the upper cover is arranged on the open end of the bottom shell, the bottom shell is provided with a first notch, and the upper cover is provided with a second notch, and the first notch and the second notch are arranged corresponding to each other to form the opening.

17. The distribution box according to claim 15, characterized in that: The heat-conducting component includes a first heat-conducting contact portion and a second heat-conducting contact portion, the first heat-conducting contact portion and the second heat-conducting contact portion are respectively arranged at the two opening portions, the first heat-conducting contact portion is connected to the positive copper busbar, and the second heat-conducting contact portion is connected to the negative copper busbar.

18. A power battery pack, characterized in that: The power battery pack comprises a distribution box according to any one of claims 10 to 17.

19. The power battery pack according to claim 18, characterized in that: The power battery pack further includes a heat exchanger connected to the cover body of the heat conductive component.

20. A vehicle, characterized in that: The vehicle includes a power battery pack according to claim 18 or 19.

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