Integrated device and battery pack

Abstract

The utility model relates to an integrated device and a battery pack, the integrated device comprises a battery energy distribution unit and a battery management system, the battery energy distribution unit comprises a shell and an electrical assembly, the shell is provided with a mounting cavity, and the electrical assembly is arranged in the mounting cavity; the battery management system is fixedly arranged on the upper side of the shell, the battery management system is provided with a connector, and an opening of the connector faces the horizontal direction. The electrical components are intensively arranged in the mounting cavity of the shell, the battery management system is fixed on the upper side of the shell, and the opening of the connector faces the horizontal direction, so that the occupied space is reduced, the influence of condensation is reduced, and the integration level and the product reliability are improved.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and in particular to an integrated device and a battery pack. Background Technology

[0002] BDU stands for Battery Energy Distribution Unit, also known as Battery Disconnect Unit. As an important component of the power battery in electric vehicles, it can provide one or more functions such as pre-charging, supercharging, discharge control, circuit overload and short circuit protection, high voltage sampling, and low voltage control for the high voltage system of new energy vehicles, protecting and monitoring the operation of the high voltage system. BMS (Battery Management System) is mainly used to manage and maintain the battery.

[0003] In related technologies, the BDU and BMS are arranged separately, and the electrical components in the battery energy distribution unit are distributed in a dispersed manner, occupying a large space. The connector is located on the top of the BMS with the connector opening facing upwards, which makes the product prone to water ingress in moisture condensation, causing the connector to rust, which in turn leads to poor contact of the connector pins and loss of transmission signals. Utility Model Content

[0004] This application provides an integrated device and battery pack that reduces space occupation, minimizes condensation, and improves integration and product reliability, thereby at least partially solving the aforementioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, an integrated device is provided, comprising:

[0006] A battery energy distribution unit includes a housing and electrical components, the housing having a mounting cavity, and the electrical components disposed within the mounting cavity; and...

[0007] A battery management system is fixedly mounted on the upper side of the housing. The battery management system is equipped with a connector, and the opening of the connector faces horizontally.

[0008] Optionally, the housing includes:

[0009] The lower shell, including the lower shell body; and,

[0010] The upper cover includes an upper cover body and an extension extending downward from the upper cover body, the upper cover body covering the lower shell body to define the mounting cavity, and the extension extending to the outer periphery of the lower shell.

[0011] The lower shell body and the extension are provided with a buckle, and the other part of the lower shell body and the extension is provided with a buckle groove, and the buckle and the buckle groove are matched.

[0012] Optionally, the battery management system includes a main body and a mounting part connected to the outer periphery of the main body, the mounting part being provided with a first mounting hole;

[0013] The upper cover also includes a lug located on the outer periphery of the upper cover body, and the lug has a second mounting hole;

[0014] The integrated device includes a first fastener that passes through the second mounting hole and the first mounting hole to securely connect the battery management system and the battery energy distribution unit.

[0015] Optionally, the lower shell body includes a bottom and a side portion connected to the outer periphery of the bottom.

[0016] The side portion is partially recessed into the mounting cavity, such that a portion of the bottom extends beyond the side portion in the direction from the outside of the mounting cavity, and the portion of the bottom extending beyond the side portion is used for connection with the battery pack housing.

[0017] Optionally, the electrical assembly includes a plurality of electrical elements, which are arranged horizontally within the mounting cavity;

[0018] The plurality of electrical components include at least two of the following: a Hall current sensor, a heating relay, a heating fuse, a main relay, a main fuse, a precharge relay and a precharge resistor, a discharge relay and a charging relay.

[0019] According to a second aspect of this application, a battery pack is provided, comprising:

[0020] The enclosure includes an electrical compartment; and,

[0021] The integrated device described above is located in the electrical compartment.

[0022] Optionally, the battery pack further includes:

[0023] A remote information processor, located in the electrical compartment and arranged side-by-side with the integrated device in a first direction, and,

[0024] A low-voltage communication harness is provided in the electrical compartment, and the low-voltage communication harness is located above the remote information processor.

[0025] Optionally, the housing includes a mounting part for mounting the battery management system and an extension part connected to the mounting part. In a first direction, the mounting part, the extension part, and the remote information processor are distributed sequentially, and the low-voltage communication harness extends above the extension part.

[0026] The extended portion is provided with a wire harness fixing structure for fixing the low-voltage communication wire harness.

[0027] Optionally, the battery pack further includes:

[0028] A high-voltage connector, installed in the enclosure and located outside the electrical compartment; and,

[0029] A flexible conductive bus is disposed in the electrical compartment and located outside the housing. The first end of the flexible conductive bus is connected to the high-voltage connector, and the second end of the flexible conductive bus extends into the mounting cavity to connect to the electrical components.

[0030] Optionally, the housing includes a housing body and a cover plate. The housing body is provided with a mounting groove, and the cover plate is movably covered above the opening of the mounting groove to define the mounting cavity between the cover plate and the mounting groove, and a channel is left on the side of the mounting groove.

[0031] The mounting cavity is provided with a connecting bar, one end of which is connected to the electrical component, and the second end of the flexible conductive bar extends into the channel to connect to the other end of the connecting bar.

[0032] In the integrated device of this application embodiment, by centrally arranging electrical components in the mounting cavity of the housing, fixing the battery management system on the upper side of the housing, and oriented the connector opening towards the horizontal direction, the space occupied is reduced, the impact of condensation is reduced, and the integration and product reliability are improved.

[0033] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0036] Figure 1This is a schematic diagram of the overall structure of the battery pack provided in an exemplary embodiment of this disclosure;

[0037] Figure 2 yes Figure 1 A partial structural diagram of the battery pack in the diagram;

[0038] Figure 3 yes Figure 1 An exploded view of a portion of the battery pack's structure.

[0039] Figure 4 yes Figure 1 A partial structural diagram of the battery pack (without integrated devices installed);

[0040] Figure 5 This is a partial structural diagram of a battery pack provided in another exemplary embodiment of this disclosure (without the integrated device installed).

[0041] Explanation of reference numerals in the attached figures:

[0042] 1000. Battery pack; 100. Integrated device; 1. Battery energy distribution unit; 11. Housing; 111. Lower housing; 101. Lower housing body; 102. Bottom; 103. Third mounting hole; 11112. Side; 1112. Buckle; 112. Top cover; 1121. Top cover body; 1122. Extension; 11221. Buckle groove; 1123. Lug; 11231. Second mounting hole; 113. Protruding part; 114. Cover plate; 115. Channel; 1131. Wiring harness fixing structure; 12. Electrical components; 121, Hall current sensor; 122, heating relay; 123, heating fuse; 124, main relay; 125, main fuse; 126, precharge relay; 127, precharge resistor; 13, connector; 2, battery management system; 21, connector; 22, main body; 23, mounting part; 231, first mounting hole; 200, enclosure; 201, electrical compartment; 300, remote information processor; 400, low-voltage communication harness; 500, high-voltage connector; 600, flexible conductive busbar. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0044] This application provides an integrated device and a battery pack, please refer to the accompanying drawings. Figures 1 to 5 This is a schematic diagram of the battery pack provided in an embodiment of this application.

[0045] The integrated device 100 includes a battery energy distribution unit 1 and a battery management system 2. The battery energy distribution unit 1 (BDU) includes a housing 11 and electrical components 12. The housing 11 is an enclosure used to protect the internal electrical components and provide mounting locations. The housing has mounting cavities to accommodate the electrical components 12. The electrical components 12 include, but are not limited to, a Hall current sensor 121, a heating relay 122, a heating fuse 123, a main relay 124, a main fuse 125, a pre-charge relay 126 and a pre-charge resistor 127, a discharge relay, and a charging relay. These components are responsible for the current distribution and protection of the battery system.

[0046] The battery management system 2 (BMS) is fixedly mounted on the upper side of the housing 11. This design makes the battery management system 2 more accessible, facilitating maintenance and inspection. The battery management system 2 is equipped with connectors 21, which connect each battery cell or module to the battery management system 2, enabling the transmission of data signals (such as voltage, current, temperature, etc.) between the battery cells and the battery management system 2. The opening of the connector 21 faces horizontally, which helps with wiring and prevents dust or moisture from entering the connector 21, reducing the impact of condensation.

[0047] In the technical solution of this application, by centrally arranging the electrical components 12 in the mounting cavity of the housing 11, fixing the battery management system 2 on the upper side of the housing 11, and oriented the connector 21 opening towards the horizontal direction, the space occupied is reduced, the impact of condensation is reduced, and the integration and product reliability are improved.

[0048] In some embodiments, the housing 11 includes a lower shell 111 and an upper cover 112. The lower shell 111 includes a lower shell body 101, and the upper cover 112 includes an upper cover body 1121 and an extension 1122 extending downward from the upper cover body 1121. The upper cover body 1121 covers the lower shell body 101 to define the mounting cavity, and the extension 1122 extends to the outer periphery of the lower shell 111. One of the lower shell body 101 and the extension 1122 is provided with a fastening portion 1112. Another type is provided with a snap groove 11221, and the snap part 1112 matches the snap groove 11221. In these embodiments, when the upper cover 112 is installed on the lower shell 111, the upper cover body 1121 and the lower shell body 101 define an installation cavity, and the snap part 1112 will snap into the snap groove 11221, thereby achieving a quick and reliable connection, simplifying the assembly process, improving the overall structural strength of the shell 11, helping to prevent external contaminants from entering the shell, protecting the internal electrical components from damage, and also helping to quickly open the shell when needed, facilitating the inspection and maintenance of internal components.

[0049] Understandably, there are many ways to fix the battery management system 2 to the upper side of the housing 11. For example, a snap-on fixing method can be used, similar to the housing fastening mechanism mentioned earlier. Alternatively, industrial-grade glue or adhesive can be used to fix the battery management system 2 to the housing 11.

[0050] In some embodiments, the battery management system 2 includes a main body 22 and a mounting portion 23 connected to the outer periphery of the main body 22. The mounting portion 23 has a first mounting hole 231. The upper cover 112 also includes a lug 1123 located on the outer periphery of the upper cover body 1121. The lug 1123 has a second mounting hole 11231. The integrated device 100 includes a first fastener, which passes through the second mounting hole 11231 and the first mounting hole 231 to fix the battery management system 2 and the battery energy distribution unit 1. In these embodiments, the main body 22 is the main component of the battery management system 2, containing all electronic components and circuit boards, and is responsible for monitoring and managing various parameters of the battery. The mounting portion 23 is located on the outer periphery of the main body 22 and is used to fix the structural parts of the battery management system 2. The mounting part 23 has a first mounting hole 231, and the outer periphery of the upper cover body 1121 is designed with a lug 1123. The lug 1123 has a second mounting hole 11231, which corresponds to the first mounting hole 231 of the BMS mounting part 23. The first fastener (such as a screw or bolt) passes through the second mounting hole 11231 (located on the lug 1123) and the first mounting hole 231 (located on the BMS mounting part 23) to fix the battery management system 2 to the housing 11. By fixing the battery management system 2 directly to the upper cover 112 of the housing 11 with fasteners, the stability of the battery management system 2 under various operating conditions can be ensured. The use of standard fasteners, such as screws, makes the installation and disassembly process simple and quick, simplifies the installation process between the battery management system 2 and the battery energy distribution unit 1, and also improves the overall reliability and maintainability.

[0051] In some embodiments, the lower housing body 101 includes a bottom 102 and a side portion 11112 connected to the outer periphery of the bottom 102. A portion of the side portion 11112 is recessed into the mounting cavity such that a portion of the bottom 102 extends beyond the side portion 11112 in the direction facing outward from the mounting cavity. The portion of the bottom 102 extending beyond the side portion 11112 is used for connection to the housing 200 of the battery pack 1000. In these embodiments, the bottom 102 is the main planar portion of the lower housing body 101, typically horizontally positioned, for supporting and mounting internal electrical components. The side portion 11112, connected to the outer periphery of the bottom 102, forms the four walls of the lower housing body 101. The main function of the side portion 11112 is to enclose a closed space, i.e., the mounting cavity. The electrical components of the battery energy distribution unit 1 are housed in a recessed portion of the side 11112 into the mounting cavity. This means that, in the direction within the mounting cavity, the bottom 102 of this portion is closer to the center of the mounting cavity than other portions of the side 11112. Due to the partial recessed design of the side 11112, the corresponding area of ​​the bottom 102 extends beyond the side 11112 in the direction outward from the mounting cavity. The portion of the bottom 102 extending beyond the side 11112 is designed to connect with the housing 200 of the battery pack 1000. It can be used to fix the housing 11 to the housing 200 of the battery pack 1000, for example, by welding, screw fixing, etc. This helps to improve the connection strength and stability between the housing 11 and the housing 200 of the battery pack 1000, while also optimizing the spatial layout, making the entire battery system more compact and efficient. Specifically, the portion of the bottom 102 extending beyond the side portion 11112 is provided with a third mounting hole 103, and the housing 200 of the battery pack 1000 is provided with a fourth mounting hole. The third mounting hole 103 and the fourth mounting hole are used to pass through a second fastener (such as a screw or bolt) to realize the installation of the integrated device 100. The portion of the bottom 102 extending beyond the side portion 11112 is more accessible, facilitating installation and disassembly operations.

[0052] In some embodiments, the electrical assembly 12 includes a plurality of electrical components arranged horizontally within the mounting cavity. These electrical components include at least two of the following: a Hall current sensor 121, a heating relay 122, a heating fuse 123, a main relay 124, a main fuse 125, a pre-charge relay 126 and a pre-charge resistor 127, a discharge relay, and a charging relay. In these embodiments, the modular layout of the integrated battery energy distribution unit 1 greatly improves product compatibility, supports various project requirements, and the horizontal arrangement of multiple electrical components within the mounting cavity provides a clear layout, facilitates maintenance and inspection, reduces interference between electrical components, and enhances reliability and safety.

[0053] According to a second aspect of this application, a battery pack 1000 is provided, including a housing 200 and an integrated device 100. The housing 200 is provided with an electrical compartment 201, and the integrated device 100 is disposed in the electrical compartment 201. The structure of the integrated device 100 is as described above. Since the battery pack 1000 adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0054] Understandably, the size of the telematics box (TBOX) 300 is often much smaller than that of the battery energy distribution unit 1. In some embodiments, the battery pack 1000 also includes the telematics box 300 and a low-voltage communication harness 400. The telematics box 300 is located in the electrical compartment 201 and is arranged side-by-side with the integrated device 100 in a first direction. The low-voltage communication harness 400 is located in the electrical compartment 201 and is positioned above the telematics box 300. In these embodiments, the telematics box 300 is a telematics processing device, typically used to collect and transmit vehicle data, such as location information and driving data, to facilitate vehicle management and remote diagnostics. The remote information processor 300 can send data to the back-end server via a wireless network (such as a cellular network). The design of the low-voltage communication harness 400 located above the remote information processor 300 helps to simplify wiring, reduce crossovers between harnesses, and lower the failure rate. The side-by-side arrangement of the remote information processor 300 and the integrated device 100 makes it more convenient to perform maintenance or inspection when needed, because both components are on the same horizontal line, which facilitates side access. By setting the remote information processor 300 and the integrated device 100 side by side and arranging the low-voltage communication harness 400 above the remote information processor 300, the space of the electrical compartment 201 can be effectively utilized, making the layout more compact.

[0055] In some embodiments, the housing 11 includes a mounting portion for the battery management system 2. Figure 2The battery management system 2 (covered area) and the extended portion 113 connected to the fixed portion are arranged in a first direction, with the fixed portion, the extended portion 113 and the remote information processor 300 distributed sequentially. The low-voltage communication harness 400 also extends above the extended portion 113. The extended portion 113 is provided with a harness fixing structure 1131 for fixing the low-voltage communication harness 400. In these embodiments, the low-voltage communication harness 400 not only extends above the extended portion 113, facilitating the connection of the low-voltage communication harness 400 to the battery management system 2, the remote information processor 300, and other electrical components, but the extended portion 113 is also provided with a harness fixing structure 1131 for fixing the low-voltage communication harness 400. The harness fixing structure 1131 can be a buckle, strap, cable tie or other fixing device to ensure that the harness will not loosen or shift, reducing the possibility of wear and failure. In this way, the various components can be reasonably arranged, optimizing space utilization and improving the overall integration and product reliability.

[0056] In some embodiments, the battery pack 1000 further includes a high-voltage connector 500 and a flexible conductive bus 600. The high-voltage connector 500 is mounted on the housing 200 and located outside the electrical compartment 201. The flexible conductive bus 600 is disposed in the electrical compartment 201 and located outside the housing 11. A first end of the flexible conductive bus 600 is connected to the high-voltage connector 500, and a second end of the flexible conductive bus 600 extends into the mounting cavity to connect to the electrical assembly 12. In these embodiments, the high-voltage connector 500 (including a discharge high-voltage connector 500 and a charging high-voltage connector 500) is a key component for connecting to an external power source or load. The flexible conductive busbar 600 is installed on the outside of the housing 200 to facilitate connection with external equipment. It is a flexible conductive connector, usually made of copper foil or similar materials, with good conductivity and flexibility, such as a soft copper busbar. The flexible conductive busbar 600 is used to connect the high-voltage connector 500 and the electrical component 12. Since the flexible conductive busbar 600 is a flexible connector, its shape can be adjusted to make the installation of the structure more convenient and compact. Its length can also be adjusted to adapt to changes in the position of the high-voltage connector 500, which can meet the needs of different customers for interface positions, thus improving the flexibility and applicability of the battery pack 1000.

[0057] In some embodiments, the housing 11 includes a housing body and a cover plate 114. The housing body has a mounting groove, and the cover plate 114 is movably covered above the opening of the mounting groove to define a mounting cavity between the cover plate and the mounting groove, and a channel 115 is provided on the side of the mounting groove. A connecting bus 13 is provided in the mounting cavity. One end of the connecting bus 13 is connected to the electrical component, and the second end of the flexible conductive bus 600 extends into the channel 115 to connect with the other end of the connecting bus 13. In these embodiments, by leaving a channel 115 on the side of the mounting groove, the connection between the flexible conductive bus 600 and the connecting bus 13 can be made more convenient, simplifying the installation process. The movable cover plate 114 facilitates subsequent maintenance and inspection. Specifically, one end of the cover plate 114 is hinged to the housing body, and the other end of the cover plate 114 is snap-fitted to the housing body.

[0058] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0059] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0060] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0061] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An integrated device, characterized in that, include: A battery energy distribution unit includes a housing and electrical components, the housing having a mounting cavity, and the electrical components disposed within the mounting cavity; and... A battery management system is fixedly mounted on the upper side of the housing. The battery management system is equipped with a connector, and the opening of the connector faces horizontally.

2. The integrated device according to claim 1, characterized in that, The housing includes: The lower shell, including the lower shell body; and, The upper cover includes an upper cover body and an extension extending downward from the upper cover body, the upper cover body covering the lower shell body to define the mounting cavity, and the extension extending to the outer periphery of the lower shell. The lower shell body and the extension are provided with a buckle, and the other part of the lower shell body and the extension is provided with a buckle groove, and the buckle and the buckle groove are matched.

3. The integrated device according to claim 2, characterized in that, The battery management system includes a main body and a mounting part connected to the outer periphery of the main body, the mounting part being provided with a first mounting hole; The upper cover also includes a lug located on the outer periphery of the upper cover body, and the lug has a second mounting hole; The integrated device includes a first fastener that passes through the second mounting hole and the first mounting hole to securely connect the battery management system and the battery energy distribution unit.

4. The integrated device according to claim 2, characterized in that, The lower shell body includes a bottom and a side portion connected to the outer periphery of the bottom. The side portion is partially recessed into the mounting cavity, such that a portion of the bottom extends beyond the side portion in the direction from the outside of the mounting cavity, and the portion of the bottom extending beyond the side portion is used for connection with the battery pack housing.

5. The integrated device according to claim 1, characterized in that, The electrical assembly includes multiple electrical components, which are horizontally arranged within the mounting cavity. The plurality of electrical components include at least two of the following: a Hall current sensor, a heating relay, a heating fuse, a main relay, a main fuse, a precharge relay, a precharge resistor, a discharge relay, and a charging relay.

6. A battery pack, characterized in that, include: The enclosure includes an electrical compartment; and, The integrated device as described in any one of claims 1 to 5, wherein the integrated device is disposed in the electrical compartment.

7. The battery pack according to claim 6, characterized in that, The battery pack also includes: A remote information processor, located in the electrical compartment and arranged side-by-side with the integrated device in a first direction, and, A low-voltage communication harness is provided in the electrical compartment, and the low-voltage communication harness is located above the remote information processor.

8. The battery pack according to claim 7, characterized in that, The housing includes a mounting part for mounting the battery management system and an extension part connected to the mounting part. In a first direction, the mounting part, the extension part, and the remote information processor are distributed sequentially, and the low-voltage communication harness extends above the extension part. The extended portion is provided with a wire harness fixing structure for fixing the low-voltage communication wire harness.

9. The battery pack according to claim 6, characterized in that, The battery pack also includes: A high-voltage connector, installed in the enclosure and located outside the electrical compartment; and, A flexible conductive bus is disposed in the electrical compartment and located outside the housing. The first end of the flexible conductive bus is connected to the high-voltage connector, and the second end of the flexible conductive bus extends into the mounting cavity to connect to the electrical components.

10. The battery pack according to claim 9, characterized in that, The housing includes a housing body and a cover plate. The housing body is provided with a mounting groove. The cover plate is movably covered above the opening of the mounting groove to define the mounting cavity between the cover plate and the mounting groove, and leaves a channel on the side of the mounting groove. The mounting cavity is provided with a connecting bar, one end of which is connected to the electrical component, and the second end of the flexible conductive bar extends into the channel to connect to the other end of the connecting bar.

Images