Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment. The battery pack comprises a battery box, wherein the battery box is provided with a wall part and an accommodating cavity enclosed by the wall part; the battery module is arranged in the accommodating cavity; the domain controller is arranged in the accommodating cavity and is electrically connected with the battery module; one end of the high-voltage output copper bar is connected with the domain controller, and the other end of the high-voltage output copper bar is connected with the first line; and the shielding cover is provided with a shielding cavity, the shielding cover is arranged in the accommodating cavity and is connected between the domain controller and the inner wall of the battery box, and the high-voltage output copper bar is arranged in the shielding cavity. According to the battery pack and the electric equipment provided by the embodiment of the invention, the electromagnetic interference influence among highly integrated parts in the battery pack is small, and the signal receiving and signal transmission of low-voltage parts are better and more stable.

Description

Technical Field

[0001] The present application belongs to the field of new energy vehicles, and in particular relates to a battery pack and electrical equipment. Background Art

[0002] Electric vehicles are developing rapidly and are being used more and more widely. In order to reduce weight, cost and shorten the debugging cycle, more parts and longer wiring harnesses are usually integrated into the battery pack to make it more functional.

[0003] However, during the operation of the battery pack, due to the high integration of various parts, the number of parts is reduced and concentrated in a smaller spatial area, resulting in the electromagnetic waves generated by the high-voltage parts affecting the sending and receiving of low-voltage signals, ultimately affecting the performance of the entire vehicle. Summary of the invention

[0004] The embodiments of the present application provide a battery pack and an electrical device, wherein the electromagnetic interference between the highly integrated components in the battery pack is small, and the signal reception and signal transmission of the low-voltage components are better and more stable.

[0005] On the one hand, an embodiment of the present application provides a battery pack, which includes: a battery box, the battery box having a wall portion and a accommodating cavity formed by the wall portion; a battery module, disposed in the accommodating cavity; a domain controller, disposed in the accommodating cavity and electrically connected to the battery module; a high-voltage output copper bus, one end of the high-voltage output copper bus is connected to the domain controller and the other end is connected to the first circuit; a shielding cover, having a shielding cavity, the shielding cover is disposed in the accommodating cavity and connected between the domain controller and the inner wall of the battery box, and the high-voltage output copper bus is disposed in the shielding cavity.

[0006] According to an embodiment of the first aspect of the present application, the shielding cover includes a lower shell and an upper shell that cover each other; the lower shell is connected to the wall portion and encloses a first cavity, the upper shell has a second cavity, the upper shell and the lower shell are detachably connected, and the first cavity and the second cavity are connected to form a shielding cavity.

[0007] According to an embodiment of the first aspect of the present application, the lower shell and the wall portion are formed integrally.

[0008] According to an embodiment of the first aspect of the present application, the lower shell includes a first side wall and a bottom wall that are connected to each other, and the first side wall and the bottom wall and the wall portion together enclose a first cavity.

[0009] According to an embodiment of the first aspect of the present application, the lower shell includes an open portion arranged opposite to the bottom wall along a first direction, and one end of the domain controller is attached to and crimped to the open portion.

[0010] According to an embodiment of the first aspect of the present application, the battery box has a box bottom and a box top opposite to each other along a first direction, and a gap is formed between the box bottom and the bottom wall along the first direction.

[0011] According to an embodiment of the first aspect of the present application, a side of the upper shell close to the wall has an inclined surface and an opposite side abuts against the domain controller, and the inclined surface is inclined toward the wall.

[0012] According to an embodiment of the first aspect of the present application, the upper shell includes a second side wall and a top wall that are connected to each other, and the second side wall and the top wall and the inclined surface together enclose a second cavity.

[0013] According to an embodiment of the first aspect of the present application, the second side wall includes a right-angled trapezoidal plate, and the top wall includes a rectangular plate.

[0014] In a second aspect, an embodiment of the present application provides an electrical device, which includes a battery pack provided in an embodiment of the first aspect of the present application, and the battery pack is used to provide electrical energy.

[0015] The battery pack and electrical equipment provided in the embodiments of the present application, the battery module, the domain controller and the output electrode are highly integrated in the battery box, the two ends of the high-voltage output copper bus are respectively connected to the domain controller and the first line, the first line is a high-voltage line, the shielding cover is connected to the battery box and forms a shielding cavity, the high-voltage output copper bus is located in the shielding cavity, the electromagnetic waves generated by the high-voltage output copper bus for transmitting high-voltage signals are blocked by the shielding cover, and therefore will not affect the signal reception and signal transmission of other components in the battery pack, especially the low-voltage components, thereby avoiding mutual interference between signals, improving the stability of receiving and transmitting signals, and making the battery pack have better safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the structure of a battery pack according to some embodiments of the present application;

[0018] Figure 2 A schematic diagram of the structure of a battery pack according to some embodiments of the present application;

[0019] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0020] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0021] Figure 5 This is a schematic diagram of the structure of a battery box in some embodiments of the present application;

[0022] Figure 6A schematic diagram of the structure of a battery pack according to some embodiments of the present application;

[0023] Figure 7 A schematic diagram of the connection between the lower housing and the wall in some embodiments of the present application;

[0024] Figure 8 This is a schematic structural diagram of the upper shell of some embodiments of the present application.

[0025] Description of Figure Numbers:

[0026] 1. Battery box; 11. Box bottom;

[0027] 2. Battery module; 3. Domain controller; 31. Side wall; 32. Overlapping part;

[0028] 4. High-voltage output copper busbar; 41. Connecting part; 411. Connecting part one; 412. Connecting part two;

[0029] 42. External connection;

[0030] 5. Shielding cover; 51. Lower housing; 511. Opening portion; 512. Bottom wall; 513-first side wall; 52. Upper housing; 521-inclined surface; 522-top wall; 523-second side wall;

[0031] 6. First connector; 7. Second connector;

[0032] 8. Support seat; 81. Support plate. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] As the core component of electric vehicles, the battery pack provides power for the vehicle. MCU (Motor control unit), motor controller. In the field of new energy electric vehicles, the battery pack, MCU and charging and distribution three-in-one are independent components. The battery pack, MCU and charging and distribution three-in-one are connected through additional components. The battery pack has a large number of overall parts, and the wiring harnesses that connect the battery pack, MCU and charging and distribution three-in-one into one are large and long. The total weight of the entire system is heavy, the debugging time is long and the cost is high. In order to solve the above problems, the applicant adopted a domain-controlled battery pack to highly integrate the above components in a smaller space of the battery pack. The applicant found that at this time, the electromagnetic waves generated by the high-voltage components will affect the sending, receiving and transmission of the signals of the low-voltage components, thereby affecting the performance of the entire vehicle.

[0036] In view of this, the embodiment of the present application provides a battery pack and an electric device. The battery pack provided by the embodiment of the present application is first introduced below.

[0037] Figure 1 and Figure 2 A schematic diagram of the structure of a battery pack provided in some embodiments of the present application is shown; Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A; Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle; Figure 5 A schematic diagram of the structure of a battery box provided in some embodiments of the present application is shown.

[0038] The battery pack provided in the embodiment of the present application is as follows: Figures 1 to 5As shown, the battery pack includes: a battery box 1, the battery box 1 has a wall portion and a accommodating cavity formed by the wall portion; a battery module 2, arranged in the accommodating cavity; a domain controller 3, arranged in the accommodating cavity and electrically connected to the battery module 2; a high-voltage output copper bus 4, the high-voltage output copper bus 4 has a connecting portion 41 and an external connecting portion 42, the connecting portion 41 is connected to the domain controller 3, and the external connecting portion 42 is connected to the first line; a shielding cover 5, connected to the battery box 1 and forming a shielding cavity, and the high-voltage output copper bus 4 is located in the shielding cavity.

[0039] In the battery provided in the embodiment of the present application, during use, the battery module 2, the domain controller 3 and the high-voltage output copper bus 4 are highly integrated in the battery box 1, and the high-voltage output copper bus 4 has a connecting portion 41 and an external portion 42, the connecting portion 41 is connected to the domain controller 3, and the external portion 42 is connected to the first line, the first line is a high-voltage line, the shielding cover 5 is connected to the battery box 1 and forms a shielding cavity, the high-voltage output copper bus 4 is located in the shielding cavity, and the electromagnetic waves generated by the high-voltage output copper bus 4 for transmitting high-voltage signals are blocked by the shielding cover 5, so it will not affect the signal reception and signal transmission of other components in the battery pack, especially the low-voltage components.

[0040] As for the structure of the battery pack, the battery pack has a battery module 2, which is formed by a number of battery cells connected in series. This allows the battery module 2 to have different battery capacities to meet different power requirements. Usually, the connected battery module 2 is set in the accommodating cavity of the battery box 1.

[0041] Specifically, the domain controller 3 is connected to the external high-voltage electrical signal through the middle high-voltage output copper bus 4. Optionally, the high-voltage output copper bus 4 can be made of copper bus and other materials. The high-voltage output copper bus 4 is connected to the domain controller 3 through the connecting part 41, and is connected to the external first line through the external connecting part 42, thereby realizing the transfer of the high-voltage electrical signal through the high-voltage output copper bus 4.

[0042] When a high-voltage electrical signal is transmitted through the high-voltage output copper bus 4, electromagnetic waves will be generated around it. The electromagnetic signal can interfere with the surrounding electromagnetic components and cause signal disorder. Therefore, in this embodiment, a shielding cover 5 is added to form electromagnetic isolation for the high-voltage output copper bus 4, and the electromagnetic wave signal generated by the high-voltage output copper bus 4 is covered in the shielding cover 5. The shielding cover 5 shields the electromagnetic signal to prevent the electromagnetic wave from spreading outward, thereby reducing the impact on other components, especially reducing the interference with the low-voltage control area.

[0043] Optionally, the shielding cover 5 can adopt a shell structure, which has a shielding cavity, and the high-voltage output copper bus 4 is just located in the shielding cavity. While transmitting the high-voltage electrical signal in the cavity, it also shields the generated electromagnetic waves. The shielding cover 5 can be made of metal material, such as metal iron or aluminum.

[0044] The battery pack provided in the embodiment of the present application is achieved by highly integrating the battery module 2, the domain controller 3 and the high-voltage output copper bus 4 in the battery box 1. The high-voltage output copper bus 4 has a connecting portion 41 and an external portion 42. The connecting portion 41 is connected to the domain controller 3, and the external portion 42 is connected to the first line, which is a high-voltage line. The shielding cover 5 is connected to the battery box 1 and forms a shielding cavity. The high-voltage output copper bus 4 is located in the shielding cavity. The electromagnetic waves generated by the high-voltage output copper bus 4 for transmitting high-voltage signals are blocked by the shielding cover 5, so it will not affect the signal reception and signal transmission of other components in the battery pack, especially the low-voltage components, thereby avoiding mutual interference between signals, improving the stability of receiving and transmitting signals, and making the battery pack have better safety performance.

[0045] In some embodiments, the battery pack further includes a first connector 6, which is disposed on the battery box 1 and protrudes from the wall in a direction away from the accommodating cavity; the high-voltage output copper bar 4 is connected between the first connector 6 and the domain controller 3, and the external connection part 42 is connected to the first line through the first connector 6. The first line is a high-voltage line, which is used to transmit high-voltage signals, and the high-voltage electrical equipment in the vehicle power system is connected to the external connection part 42 through the first connector 6.

[0046] In some optional embodiments, the battery pack further includes a second connector 7, which is disposed on the battery box 1 and protrudes from the wall in a direction away from the accommodating cavity; the second connector 7 is connected to the second circuit, and the first connector 6 is spaced apart from the second connector 7. The second circuit is a low-voltage circuit, which is used to transmit low-voltage signals, and the low-voltage electrical equipment in the vehicle power system is connected to the battery pack through the second connector 7.

[0047] Furthermore, the first connector 6 and the second connector 7 are arranged on the same side wall 31 of the wall of the battery box 1, and the first connector 6 and the second connector 7 are arranged at intervals to centrally arrange the components in the battery pack, saving space while optimizing the connection lines between the components.

[0048] Optionally, the first connector 6 can be a three-phase high-voltage connector capable of transmitting high-voltage signals, and the second connector 7 can be a low-voltage signal connector. The second connector 7 can be connected to the inside of the battery box 1 through a PCB board arranged in the domain controller 3, and transmit low-voltage signals.

[0049] In some achievable embodiments of the present application, the shielding cover 5 includes a lower shell 51 and an upper shell 52 that cover each other; the lower shell 51 is connected to the wall, and the upper shell 52 is detachably connected to the lower shell 51. The shielding cover 5 and the wall wrap the high-voltage output copper bar 4 to shield the electromagnetic waves output by the high-voltage output copper bar 4. The detachable connection between the upper shell 52 and the lower shell 51 facilitates the user to first place the high-voltage output copper bar 4 in the lower shell 51 and then cover the upper shell 52 on the lower shell 51 to wrap the high-voltage output copper bar 4.

[0050] Optionally, the lower shell 51 of the shielding cover 5 can be integrated with the battery box 1, or can form a detachable connection with the battery box 1. The present application does not specifically limit the connection method between the lower shell 51 and the battery box 1, as long as the lower shell 51 can accommodate part of the high-voltage output copper bus 4.

[0051] When the lower shell 51 is connected to the battery box 1, the bottom surface of the domain controller 3 is in contact with the top surface of the lower shell 51, so as to ensure that the middle high-voltage output copper bus 4 can be located in the lower shell 51. After the high-voltage output copper bus 4 is connected to the domain controller 3 and the first connector 6, the upper shell 52 of the shielding cover 5 is installed, so that the upper shell 52 and the lower shell 51 are docked to form a complete shielding cover 5 structure, thereby forming a shielding effect on the high-voltage output copper bus 4 in the shielding cavity.

[0052] Optionally, the upper shell 52 and the lower shell 51 can be connected by bolts to meet the requirement of detachability. The present application does not specifically limit the connection method between the upper shell 52 and the lower shell 51.

[0053] The battery pack provided in the embodiment of the present application, by arranging the high-voltage output copper bus 4 between the detachable upper shell 52 and the lower shell 51 of the shielding cover 5, allows the shielding cover 5 to not only shield the internal high-voltage output copper bus 4, but also facilitate the disassembly of the upper shell 52 and the lower shell 51 to maintain and replace the internal connecting components, thereby achieving a better maintenance effect.

[0054] Optionally, the lower shell 51 and the wall portion may be connected in a detachable manner or may be integrally formed by a casting process, thereby avoiding the need to separately process and manufacture the two and then install them, simplifying the process flow and improving process efficiency.

[0055] In some achievable embodiments of the present application, the lower housing 51 has a bottom wall 512 and an open portion 511 opposite to each other along the first direction, one end of the domain controller 3 is in contact with the open portion 511, and the end of one end of the domain controller 3 is connected to the high-voltage output copper bus 4. The open portion 511 supports the domain controller 3, and the end of one end of the domain controller 3 is arranged to coincide with the orthographic projection of the open portion 511 in the first direction, so that the high-voltage output copper bus 4 can be completely wrapped in the shielding cover 5 after the upper housing 52 and the lower housing 51 are covered.

[0056] As for the structure of the lower shell 51 , the lower shell 51 has a bottom wall 512 , and its top serves as an open portion 511 for docking with the upper shell 52 and accommodating the high-voltage output copper bus 4 . Therefore, the size of the open portion 511 needs to be larger than the setting of the high-voltage output copper bus 4 .

[0057] The structure of the lower shell 51 and the outline of the open portion 511 determine the overall structure of the shielding cover 5. As shown in the figure, in this embodiment, the shielding cover 5 can be set to a rectangular shell structure. Of course, it can also be set to other shapes according to different needs. The present application does not make any special restrictions on the specific shape structure of the shielding cover 5, as long as it can accommodate the high-voltage output copper bus 4.

[0058] In the embodiment provided in the present application, the battery box 1 has a box bottom 11 and a box top relative to each other along the first direction, and a gap is formed between the box bottom 11 and the bottom wall 512 along the first direction. The gap formed between the box bottom 11 and the bottom wall 512 is conducive to the circulation of air in the battery pack, thereby facilitating the heat dissipation around the domain controller 3.

[0059] At the same time, the gap between the bottom wall 512 of the shielding cover 5 and the bottom 11 of the box also meets the height access requirements of the domain controller 3, avoids structural interference between the shielding cover 5 and the bottom 11 of the box, and reduces the design volume of the shielding cover 5. The present application does not make any special limitation on the size of the gap between the two.

[0060] In the embodiment provided in the present application, a support base 8 is provided between the domain controller 3 and the bottom 11 of the box along the first direction, and the support base 8 is connected between the domain controller 3 and the bottom 11 of the box. The support base 8 supports the domain controller 3 and can increase the height of the domain controller 3 in the first direction, and further facilitates the adjustment of the end of one end of the domain controller 3 to fit with the open portion 511 of the lower shell 51.

[0061] In the present embodiment, by providing a support seat 8 on the bottom wall of the domain controller 3, the domain controller 3 is elevated, which facilitates the docking of the domain controller 3 with the battery module 2 and the high-voltage output copper bus 4. Optionally, the support seat 8 can adopt a variety of structural forms, such as a block structure or a columnar structure, etc., which mainly play a certain supporting and raising role. The present application does not make any special limitation on the specific structural form of the support seat 8. At the same time, the support seat 8 can be an integrally formed structure or a split structure, which can be selected according to different actual needs.

[0062] In the embodiment provided in the present application, the support seat 8 includes two support plates 81 arranged opposite to each other along the second direction, and the domain controller 3 has two opposite side walls 31 along the second direction; each support plate 81 is located on the outside of each side wall 31 and there is a gap between the support plate 81 and the side wall 31; the side wall 31 partially extends outward along the second direction to form a lap portion 32, and the lap portion 32 is connected to the support plate 81. Each support plate 81 is located on the outside of each side wall 31 and there is a gap between the support plate 81 and the side wall 31 to promote air circulation around the domain controller 3 and its lower side in the first direction, so as to facilitate heat dissipation around the domain controller 3.

[0063] Optionally, the specific structure of the support seat 8 can be a "J"-shaped structure, consisting of support plates 81 on both sides, and the support plates 81 are arranged on the outside of the side walls 31 of the domain controller 3, so that the domain controller 3 can be stably set on the support seat 8.

[0064] An overlap portion 32 is provided on the side wall 31 of the domain controller 3, and the overlap portion 32 is in contact with the support plate 81, so that the overlap portion 32 can absorb part of the force to avoid stress concentration. At the same time, the abutment between the overlap portion 32 and the support plate 81 can improve the stability of the domain controller 3 on the support seat 8.

[0065] Optionally, as shown in the figure, the structure of the overlapping portion 32 can adopt a cylindrical structure, and the overlapping portion 32 can be set on both side walls 31 of the domain controller 3 to make the overall structure more stable. Of course, the overlapping portion 32 can also adopt other structural forms. The present application does not specifically limit the specific structural form of the overlapping portion 32.

[0066] In some embodiments, the connection portion 41 includes a first connection portion 411 and a second connection portion 412 which are an integrally formed structure, the first connection portion 411 and the second connection portion 412 are arranged to intersect; the second connection portion 412 and the external connection portion 42 are arranged to intersect, and the second connection portion 412 and the external connection portion 42 are an integrally formed structure. Further, the first connection portion 411 and the second connection portion 412 intersect vertically, and the second connection portion 412 intersects vertically with the external connection portion 42. The connection portion 41 of the high-voltage output copper busbar 4 is an inverted L-shaped stepped structure, which can realize the connection between the domain controller 3 and the first line in a limited space, and the high-voltage output copper busbar 4 can be completely wrapped by the shielding cover 5.

[0067] Optionally, as shown in the figure, in this embodiment, the high-voltage output copper bus 4 can be set to multiple, for example, three, each high-voltage output copper bus 4 can be an integrally formed structure of a connecting part 411, a connecting part 412 and an external connection part 42, and the overall structure of the high-voltage output copper bus 4 is a Z-shaped structure, and the two ends are respectively connected to the domain controller 3 and the first connector 6.

[0068] It should be noted that no matter what the number and structure of the high-voltage output copper busbars 4 are, the shielding cover 5 needs to completely wrap and cover them, so as to completely shield the electromagnetic wave signal at the position of the high-voltage output copper busbars 4. The shape, structure and size of the shielding cover 5 need to be determined according to the actual connection structure of the high-voltage output copper busbars 4.

[0069] Optionally, the connection between the external connection portion 42 of the high-voltage output copper busbar 4 and the first connector 6 is also detachable, for example, a bolt connection can be used, and the bolt connection does not affect the conductivity between the first connector 6 and the high-voltage output copper busbar 4.

[0070] like Figures 6 to 8 As shown, the lower shell 51 includes a first side wall 513 and a bottom wall 512 connected to each other. The first side wall 513 and the bottom wall 512 and the wall portion together enclose a first cavity. Optionally, the lower shell 51 may be a rectangular parallelepiped structure.

[0071] Optionally, the upper shell 52 has an inclined surface 521 on one side close to the wall and the opposite side abuts against the domain controller 3 , and the inclined surface 521 is inclined toward the wall.

[0072] The upper shell 52 includes a second side wall 523 and a top wall 522 connected to each other. The second side wall 523 and the top wall 523 and the inclined surface 521 together enclose a second cavity. Optionally, the upper shell 52 may be a trapezoidal structure.

[0073] Optionally, the second side wall 523 includes a right-angled trapezoidal plate, and the top wall 522 includes a rectangular plate.

[0074] By setting an inclined surface 521 on the upper shell 52, the upper shell 52 can use the inclined surface 521 to avoid the wall of the battery box 1, thereby preventing the upper shell 52 from forming a structural conflict with the battery box 1 and causing the installation of the upper shell 52 to fail. It is more conducive to the upper and lower docking of the upper shell 52 and the lower shell 51, so that the shielding cover 5 as a whole is better suitable for the accommodating cavity.

[0075] Optionally, the structure and shape of the shielding cover 5 can be adjusted according to the actual arrangement of components so that it can better adapt to the battery box 1 and prevent obstruction between structures. The present application does not specifically limit the specific structure of the lower shell 51 and the upper shell 52, as long as it can meet specific installation requirements.

[0076] Another embodiment of the present application provides an electrical device, including the above-mentioned battery pack, and the battery pack is used to provide electrical energy.

[0077] The battery pack and electrical equipment provided in the embodiments of the present application, the battery module, the domain controller and the high-voltage output copper bus are highly integrated in the battery box, the high-voltage output copper bus has a connecting portion and an external portion, the connecting portion is connected to the domain controller, the external portion is connected to the first line, the first line is a high-voltage line, the shielding cover is connected to the battery box and forms a shielding cavity, the high-voltage output copper bus is located in the shielding cavity, the electromagnetic waves generated by the high-voltage output copper bus for transmitting high-voltage signals are blocked by the shielding cover, and therefore will not affect the signal reception and signal transmission of other components in the battery pack, especially the low-voltage components, thereby avoiding mutual interference between signals, improving the stability of receiving and transmitting signals, and making the battery pack have better safety performance.

[0078] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0079] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A battery pack, characterized in that: The battery pack comprises: A battery box, the battery box having a wall portion and a receiving cavity formed by the wall portion; A battery module is disposed in the accommodating cavity; A domain controller, disposed in the accommodating cavity and electrically connected to the battery module; A high-voltage output copper busbar, one end of which is connected to the domain controller and the other end of which is connected to the first line; A shielding cover has a shielding cavity, wherein the shielding cover is arranged in the accommodating cavity and connected between the domain controller and the inner wall of the battery box, and the high-voltage output copper bus is arranged in the shielding cavity.

2. The battery pack according to claim 1, characterized in that: The shielding cover comprises a lower shell and an upper shell covering each other; The lower shell is connected to the wall portion and encloses a first cavity. The upper shell has a second cavity. The upper shell is detachably connected to the lower shell. The first cavity and the second cavity are connected to form the shielding cavity.

3. The battery pack according to claim 2, characterized in that: The lower shell and the wall portion are integrally formed.

4. The battery pack according to claim 2, characterized in that: The lower shell includes a first side wall and a bottom wall connected to each other, and the first side wall and the bottom wall and the wall portion together enclose the first cavity.

5. The battery pack according to claim 4, characterized in that: The lower shell includes an open portion arranged opposite to the bottom wall along a first direction, and one end of the domain controller is attached to and pressed against the open portion.

6. The battery pack according to claim 4, characterized in that: The battery box has a box bottom and a box top opposite to each other along a first direction, and a gap is formed between the box bottom and the bottom wall along the first direction.

7. The battery pack according to claim 2, characterized in that: The upper shell has an inclined surface on one side close to the wall portion and an opposite side abuts against the domain controller, and the inclined surface is inclined toward the wall portion.

8. The battery pack according to claim 7, characterized in that: The upper shell includes a second side wall and a top wall connected to each other, and the second side wall and the top wall and the inclined surface together enclose the second cavity.

9. The battery pack according to claim 8, characterized in that: The second side wall comprises a right-angled trapezoidal plate, and the top wall comprises a rectangular plate.

10. An electrical device, characterized in that: include: The battery pack according to any one of claims 1 to 9, wherein the battery pack is used to provide electrical energy.

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