Battery pack circuit breaking unit, power battery and vehicle
By setting a heat exchange area and sealing on the distribution box box, the liquid entry problem caused by the gap between the cooling plate and the box box is solved, and the sealing and cooling effect of functional components is achieved, reducing maintenance difficulty and cost.
Patent Information
- Application Number
- CN202420625927.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-03-28
AI Technical Summary
In the existing distribution box cooling method, the gap between the cooling plate and the box body can easily cause liquid to enter, resulting in short circuits of functional components, and affecting the normal operation of the battery pack.
A heat exchange area is provided on the first side of the power distribution box box body, and a heat exchange member is arranged opposite to the seal. The seal is connected to the box body and the heat exchange member around the heat exchange region, forming a sealing structure to prevent liquid from entering the gap between the heat exchange region and the heat exchange member.
Effectively prevent liquid from entering the gap between functional components and cooling plate, reduce short circuit conditions, ensure the normal use of functional components, and reduce maintenance and maintenance difficulties and costs.
Smart Images
Figure CN223261072U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle technology, and in particular to a battery pack disconnect unit, a power battery and a vehicle. Background Art
[0002] The power distribution box is a crucial component of an electric vehicle's battery pack, distributing battery energy. It consists of a housing and internal components. During operation, these components generate heat, requiring cooling to ensure proper operation.
[0003] Currently, the cooling method for distribution boxes involves creating openings in the box body, exposing the heat-generating parts of the functional components to the openings. A cooling plate is then placed on the outside of the box body, covering the openings. The heat-generating parts of the functional components come into contact with the cooling plate to exchange heat, achieving a cooling effect. However, in actual use, a gap has been found between the cooling plate and the box body. If water or liquid leaks into the distribution box's operating environment, liquid can easily enter between the functional components and the cooling plate, potentially causing a short circuit in the functional components. Utility Model Content
[0004] The present application provides a battery pack disconnect unit, a power battery and a vehicle, which can effectively prevent liquid from entering the gap between the heating area of the functional component and the cooling plate, and effectively reduce the short circuit of the functional component.
[0005] The present application provides a distribution box body, wherein the distribution box body includes:
[0006] A box body, wherein a first surface of the box body is provided with a heat exchange area;
[0007] a heat exchange element, disposed outside the box body and opposite to the heat exchange area, and along the direction from the heat exchange element to the heat exchange area, the projection of the heat exchange element covers the projection of the heat exchange area;
[0008] The sealing member is provided on the outer surface of the box body and surrounds the heat exchange area. The sealing member is in sealing connection with the heat exchange member. The heat exchange member and the sealing member cooperate to seal the heat exchange area.
[0009] In the distribution box body as described above, the heat exchange element is spaced apart from the first surface, the sealing element is provided between the heat exchange element and the first surface, and the sealing element is sealed to the first surface and the surface of the heat exchange element facing the box body respectively.
[0010] The distribution box body as described above, wherein the box body, the sealing element and the heat exchange element enclose a receiving cavity;
[0011] A heat conducting member is provided inside the accommodating cavity.
[0012] As described above, in the distribution box body, the heat exchange component is arranged in contact with the first surface, the heat exchange component covers the heat exchange area, the sealing component is arranged around the circumference of the heat exchange component, and the sealing component is sealed with the first surface and the circumference of the heat exchange component respectively.
[0013] The distribution box body as described above, wherein the heat exchange element is recessed on one side of the box body to form an accommodating cavity;
[0014] A heat conducting member is provided inside the accommodating cavity.
[0015] In the distribution box body as described above, the heat conducting member fills up the accommodating cavity, and the heat conducting member is in contact with the heat exchanging member and the heat exchanging area respectively.
[0016] In the distribution box body as described above, the heat exchange area forms a heat exchange port, and the heat exchange port communicates with the inside and outside of the box body.
[0017] In the distribution box body as described above, a embedding groove is provided on the first surface, the embedding groove surrounds the heat exchange area, the sealing member is a sealing ring frame, and a part of the sealing member is embedded in the embedding groove.
[0018] In the distribution box body as described above, the sealing member protrudes from the first surface by a dimension of 3 mm to 8 mm.
[0019] The present application also provides a battery pack circuit breaker unit, wherein the distribution box includes the distribution box body as described above.
[0020] The battery pack disconnect unit as described above, wherein the heat exchange area of the box body of the power distribution box is a heat exchange port, and the heat exchange port is connected to the inside and outside of the box body;
[0021] The battery pack disconnect unit further includes a connecting bar, a portion of which covers the heat exchange port and is in contact with the heat conducting member of the distribution box body.
[0022] The present application also provides a power battery, wherein the power battery includes the battery pack disconnect unit as described above.
[0023] The present application also provides a vehicle, wherein the vehicle includes the power distribution box as described above.
[0024] The battery pack disconnect unit, power battery and vehicle provided in the embodiments of the present application are capable of cooling the heat exchange area by providing a heat exchange area on the first side of the box body and arranging a heat exchange component opposite to the heat exchange area; by arranging a sealing component around the periphery of the heat exchange area and connecting the sealing component to the box body and the heat exchange component respectively, the space between the heat exchange area and the heat exchange component can be effectively sealed, and when water enters the applicable pipe diameter of the distribution box body or liquid leaks, the liquid can be effectively prevented from entering between the heat exchange area and the heat exchange component, thereby effectively reducing the short circuit of functional components and ensuring the normal use of functional components. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A schematic diagram of the structure of the power distribution box body provided in an embodiment of the present application;
[0026] Figure 2 An exploded view of the power distribution box provided in an embodiment of the present application;
[0027] Figure 3 A schematic diagram of the connection structure between the box body and the sealing member of the distribution box provided in an embodiment of the present application;
[0028] Figure 4 A partial cross-sectional view of a distribution box body provided in an embodiment of the present application;
[0029] Figure 5 A partial cross-sectional view of a distribution box body provided in another embodiment of the present application.
[0030] Description of Figure Numbers:
[0031] 1. Box body; 11. Heat exchange area; 12. Embedded groove; 2. Heat exchange element; 3. Sealing element; 4. Accommodating cavity; 5. Heat conducting element. DETAILED DESCRIPTION
[0032] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present disclosure and the features therein can be combined with each other.
[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.
[0035] like Figures 1 to 3 As shown, the present application provides a distribution box body, wherein the distribution box body includes a box body 1, a heat exchanger 2 and a seal 3. The box body 1 is used to accommodate functional components, the heat exchanger 2 is used to cool the functional components located inside the box body 1, and the seal 3 is used to seal the connection between the box body 1 and the heat exchanger 2.
[0036] A heat exchange area 11 is provided on the first surface of the box body 1 , and the heat generating position of the functional component is exposed to the heat exchange area 11 to ensure that the heat generated by the functional component can be diffused to the outside of the box body 1 in the heat exchange area 11 .
[0037] Heat exchange element 2 is located outside of housing 1, opposite heat exchange area 11. Heat exchange element 2 exchanges heat with the heat-generating areas of functional components in heat exchange area 11, thereby cooling the components. From heat exchange element 2 to heat exchange area 11, the projection of heat exchange element 2 overlaps the projection of heat exchange area 11. That is, the projection of heat exchange area 11 entirely falls within the projection of heat exchange element 2, ensuring uniform and effective heat exchange between the heat-generating areas of functional components and heat exchange element 2.
[0038] The seal 3 is provided on the outer surface of the box body 1 and surrounds the heat exchange area 11, and the seal 3 is sealed with the heat exchange element 2, so that the heat exchange area 11 is sealed by the heat exchange element 2 and the seal 3, thereby ensuring the sealing of the heat exchange area 11 and the interior of the box body 1. When there is liquid in the application environment of the distribution box body, it can effectively prevent the liquid from entering the interior of the box body 1 from the heat exchange area 11, thereby ensuring the insulation performance of the functional components inside the box body 1.
[0039] The distribution box body provided in the embodiment of the present application is provided with a heat exchange area on the first surface of the box body, and a heat exchange component is arranged opposite to the heat exchange area, so that the heat exchange area can be cooled by the heat exchange component; by arranging a sealing component around the periphery of the heat exchange area, and making the sealing component connected to the box body and the heat exchange component respectively, the space between the heat exchange area and the heat exchange component can be effectively sealed. When water enters the applicable pipe diameter of the distribution box body or liquid leaks, it can effectively prevent the liquid from entering between the heat exchange area and the heat exchange component, thereby effectively reducing the short circuit of functional components and ensuring the normal use of functional components.
[0040] Moreover, for the distribution box provided in the embodiment of the present application, when the box body 1 and the heat exchanger 2 need to be disassembled during inspection and maintenance, it is only necessary to separate the seal 3 from the heat exchanger 2 or to separate the seal 3 from the box body 1. Compared with the connection method in which the cooling plate is directly bonded and fixed to the box body 1 in the related art, the connection area between the seal 3 and the box body 1 and between the seal 3 and the heat exchanger 2 in the present application is smaller, and the difficulty in disassembling them is very low. In addition, it is not easy to cause deformation and damage to the box body 1 and the heat exchanger 2 during the disassembly process, so that the box body 1 and the heat exchanger 2 can be reused, which can effectively reduce the difficulty and cost of maintenance.
[0041] In some embodiments, as Figure 4 As shown, the distribution box body provided by the present application, wherein the heat exchanger 2 is spaced apart from the first surface of the box body 1, the sealing member 3 is arranged between the heat exchanger 2 and the first surface of the box body 1, and the sealing member 3 is sealed with the surface of the box body 1 facing the heat exchanger 2 (i.e., the first surface) and the surface of the heat exchanger 2 facing the box body 1, respectively. The surface of the heat exchanger 2 facing the box body 1 is roughly parallel to the surface of the box body 1 facing the heat exchanger 2, so as to ensure that the force at each location is basically uniform when the sealing member 3 is arranged between the two.
[0042] Optionally, the seal 3 is pressed between the box body 1 and the heat exchanger 2, and the seal 3 and the heat exchanger 2 as well as the seal 3 and the box body 1 can be bonded and fixed, which has the advantages of reliable connectivity and sealing, easy processing and low processing cost.
[0043] like Figure 4 As shown, the distribution box body provided by the present application, wherein the box body 1, the sealing member 3 and the heat exchange member 2 enclose a accommodating cavity 4; a heat conductive member 5 is provided inside the accommodating cavity 4, and the heat conductive member 5 is made of a material with a high thermal conductivity coefficient and has good thermal conductivity. By providing the heat conductive member 5, the heat conduction between the functional components and the heat exchange member 2 can be accelerated, thereby ensuring the cooling effect of the functional components at the heat exchange area 11.
[0044] In other embodiments, Figure 5As shown, the distribution box body provided by the present application, wherein the heat exchanger 2 is arranged in contact with the first surface of the box body 1, the heat exchanger 2 covers the heat exchange area 11, and the seal 3 is arranged around the circumference of the heat exchanger 2, and the seal 3 is respectively sealed with the surface of the box body 1 facing the heat exchanger 2 and the circumference of the heat exchanger 2. Such an arrangement can also seal the heat exchange area 11 through the cooperation of the seal 3 and the heat exchanger 2. At the same time, there is a smaller connection area between the seal 3 and the box body 1 and between the seal 3 and the heat exchanger 2, which has the advantage of easy disassembly; and when the seal 3 is arranged on the circumference of the heat exchanger 2, the overall size of the distribution box body in the direction perpendicular to the plane where the heat exchange area 11 is located can be reduced, which is beneficial to improving the integration of the box body 1.
[0045] like Figure 5 As shown, the distribution box body provided by the present application, wherein the heat exchanger 2 is recessed on one side of the box body 1 to form a accommodating cavity 4; a heat conductive member 5 is provided inside the accommodating cavity 4, and the heat conductive member 5 is made of a material with a high thermal conductivity coefficient and has good thermal conductivity. At the same time, by providing the heat conductive member 5, the contact area between the heat exchanger 2 is increased, thereby accelerating the heat conduction between the functional components and the heat exchanger 2, and ensuring the cooling effect of the functional components at the heat exchange area 11.
[0046] The distribution box body provided in the present application, wherein the heat conductive member 5 fills the accommodating cavity 4, and the heat conductive member 5 is in close contact with the heat exchange member 2. By arranging the heat conductive member 5 to fill the accommodating cavity 4, the air in the accommodating cavity 4 can be effectively reduced, thereby avoiding the condensation of water vapor in the air inside the accommodating cavity 4 and the generation of water droplets that affect the insulation performance of the functional components, thereby ensuring the normal operation of the functional components.
[0047] Optionally, a heat exchange port is formed in the heat exchange area 11 , and the heat exchange port passes through the wall of the box body 1 and communicates with the inner and outer sides of the box body 1 .
[0048] Optionally, the heat conducting member 5 is in close contact with the functional components located inside the box body 1 to ensure the heat conduction efficiency between the heat conducting member 5 and the functional components.
[0049] Optionally, a portion of the heat conductor 5 passes through the heat exchange port and is flush with the inner surface of the box body 1 or protrudes from the inner surface of the box body 1 and is in contact with the functional component; or a portion of the heat conductor 5 extends into the heat exchange port, and a portion of the functional component extends into the heat exchange port, and the two are in contact with each other in the heat exchange port; or a portion of the functional component passes through the heat exchange port and is flush with the first surface of the box body or protrudes from the first surface of the box body and is in contact with the heat conductor 5.
[0050] like Figure 5As shown, the distribution box body provided by the present application has an embedding groove 12 on the first surface of the box body 1. The embedding groove 12 surrounds the heat exchange area 11. The seal 3 is a sealing ring frame. The heat exchange port can be circular, elliptical, or polygonal, such as a rectangle. The seal 3 is a closed ring frame. Its shape can be the same as or different from the shape of the heat exchange port, as long as the projection of the heat exchange port falls inside the projection of the seal 3 along the through-direction of the heat exchange port (i.e., the direction perpendicular to the plane of the heat exchange area 11). A portion of the seal 3 is embedded in the embedding groove 12, which can effectively fix the position between the seal 3 and the box body 1, prevent the seal 3 from sliding along the surface of the box body 1 toward the heat exchange element 2, and ensure the sealing effect of the seal 3.
[0051] Optionally, in the distribution box body provided herein, the seal 3 protrudes from the first surface of the box body 1 by 3 to 8 mm, providing space for the seal 3 to retract. When the seal 3 is pressed between the box body 1 and the heat exchanger 2, it can closely abut the box body 1 and the heat exchanger 2 to ensure its sealing performance. Furthermore, in embodiments where the seal 3 surrounds the heat exchanger 2, the bonding area between the seal 3 and the heat exchanger 2 can be effectively maintained, thereby ensuring the reliability of the connection between the two.
[0052] The present application also provides a battery energy distribution unit (BDU), wherein the battery energy distribution unit includes a functional component and the above-mentioned distribution box body. The functional component may be a connecting bar (such as a copper bar) for realizing internal electrical connection of the distribution box.
[0053] Optionally, the heat exchange area of the distribution box body is a heat exchange port, which connects the inside and outside of the box body. A part of the connecting row covers the heat exchange port and is in close contact with the heat conductive part of the distribution box body. The heat conductive part can effectively ensure the efficiency of heat generated by the functional components to be transferred to the outside of the box body, thereby ensuring the cooling effect of the functional components.
[0054] The battery pack disconnect unit provided in the embodiment of the present application adopts a distribution box body which is provided with a heat exchange area on the box body, and a heat exchange component is provided on the outside of the box body opposite to the heat exchange area, so that the heat exchange area can be cooled by the heat exchange component; at the same time, a seal is provided around the periphery of the heat exchange area, and the seal is respectively connected to the box body and the heat exchange component, so that the heat exchange area can be effectively sealed to ensure the sealing performance of the heat exchange area and the box body; and, when the box body and the heat exchange component need to be disassembled during inspection and maintenance, it is only necessary to separate the seal from the heat exchange component or to separate the seal from the box body; since the connection area between the seal and the box body and between the seal and the heat exchange component is small, it is very easy to disassemble them, and it is not easy to cause damage to the box body and the heat exchange component during the disassembly process, so that the box body and the heat exchange component can be reused, which can effectively reduce the difficulty and cost of maintenance.
[0055] An embodiment of the present application further provides a power battery, wherein the power battery includes the battery pack disconnect unit as described above.
[0056] The power battery provided in the embodiment of the present application has a distribution box body used in its battery pack disconnecting unit. By arranging a heat exchange area on the box body and arranging a heat exchange component on the outside of the box body opposite to the heat exchange area, the heat exchange area can be cooled by the heat exchange component. At the same time, by arranging a seal around the periphery of the heat exchange area and making the seal connected to the box body and the heat exchange component respectively, the heat exchange area can be effectively sealed to ensure the sealing performance of the heat exchange area and the box body. Moreover, when it is necessary to disassemble the box body and the heat exchange component during inspection and maintenance, it is only necessary to separate the seal from the heat exchange component or to separate the seal from the box body. Since the connection area between the seal and the box body and between the seal and the heat exchange component is small, it is very easy to disassemble them, and it is not easy to cause damage to the box body and the heat exchange component during the disassembly process, so that the box body and the heat exchange component can be reused, which can effectively reduce the difficulty and cost of maintenance.
[0057] The present application also provides a vehicle, wherein the vehicle includes the distribution box as described above.
[0058] The vehicle provided in the embodiment of the present application has a distribution box body adopted for the battery high-break unit of its power battery. By arranging a heat exchange area on the box body and arranging a heat exchange component on the outside of the box body opposite to the heat exchange area, the heat exchange area can be cooled by the heat exchange component; at the same time, by arranging a seal around the periphery of the heat exchange area and making the seal connected to the box body and the heat exchange component respectively, the heat exchange area can be effectively sealed to ensure the sealing performance of the heat exchange area and the box body; and, when it is necessary to disassemble the box body and the heat exchange component during inspection and maintenance, it is only necessary to separate the seal from the heat exchange component or to separate the seal from the box body. Since the connection area between the seal and the box body and between the seal and the heat exchange component is small, the difficulty in disassembling them is very low, and the box body and the heat exchange component are not easily damaged during the disassembly process, so that the box body and the heat exchange component can be reused, which can effectively reduce the difficulty and cost of maintenance.
Claims
1. A battery pack disconnect unit, characterized in that: The battery pack disconnect unit includes a distribution box body and a connection bar; The distribution box body includes: A box body (1), wherein a first surface of the box body is provided with a heat exchange area (11); A heat exchange element (2) is provided outside the box body (1) and is arranged opposite to the heat exchange area (11), and along the direction from the heat exchange element to the heat exchange area, the projection of the heat exchange element covers the projection of the heat exchange area; A sealing member (3) is provided on the outer surface of the box body (1) and surrounds the heat exchange area (11), and the sealing member (3) is sealedly connected to the heat exchange member (2), and the heat exchange member (2) and the sealing member (3) cooperate to seal the heat exchange area (11); The first surface, the sealing element (3) and the heat exchange element (2) are enclosed to form a receiving cavity (4); A heat conducting member (5) is provided inside the accommodating cavity (4), and the heat conducting member (5) fills the accommodating cavity (4); The heat exchange area is a heat exchange port, and the heat exchange port is connected to the inner side and the outer side of the box body; A portion of the connecting row covers the heat exchange port and is in contact with the heat conducting member of the distribution box body.
2. The battery pack disconnect unit according to claim 1, wherein: The heat exchange element (2) is spaced apart from the first surface, the sealing element (3) is provided between the heat exchange element (2) and the first surface, and the sealing element (3) is sealedly connected to the first surface and the surface of the heat exchange element (2) facing the box body (1), respectively.
3. The battery pack disconnect unit according to claim 1, wherein: The heat exchange element (2) is arranged in contact with the first surface, the heat exchange element (2) covers the heat exchange area (11), the sealing element (3) is arranged around the circumference of the heat exchange element (2), and the sealing element (3) is respectively sealed with the first surface and the circumference of the heat exchange element (2).
4. The battery pack disconnect unit according to claim 3, characterized in that: The accommodating cavity (4) is formed in a recessed manner on one side of the heat exchange element (2) facing the box body (1).
5. The battery pack disconnect unit according to claim 1, wherein: An embedding groove (12) is provided on the first surface, the embedding groove (12) surrounds the heat exchange area (11), the sealing member (3) is a sealing ring frame, and a portion of the sealing member (3) is embedded in the embedding groove (12).
6. The battery pack disconnect unit according to claim 1, wherein: The sealing member (3) protrudes from the first surface by a dimension of 3 mm to 8 mm.
7. A power battery, characterized in that: The power battery includes the battery pack disconnect unit according to any one of claims 1 to 6.
8. A vehicle, characterized in that: The vehicle includes the power battery according to claim 7.