12v and 48v integrated power battery cc

Abstract

The utility model discloses a kind of 12V and 48V integrated power battery CCS, including blister sheet, first FPC plate and second FPC plate are fixedly arranged with side surface parallel on blister sheet, jumper aluminium bar is vertically laser welded between first FPC plate and second FPC;First FPC plate both sides and second FPC plate both sides are fixedly set with several connecting aluminium bars, output pole negative is laser welded in the connecting aluminium bar of first FPC plate upper side, output pole positive is laser welded in the connecting aluminium bar of second FPC plate lower side;The upper left corner of blister sheet is fixed with 12V output pole by riveting;By the 12V output pole setting and the integrated power battery CCS integrated battery management system of 48V integration, the two sets of management system originally required are simplified into a set of management system, effectively reduce maintenance time and cost in the process of later vehicle use, improve the overall operation stability and management efficiency of battery system.

Description

Technical Field

[0001] This utility model relates to a power battery CCS, and more particularly to a 12V and 48V integrated power battery CCS. Background Technology

[0002] In the global automotive industry's transition to new energy, the 12V low-voltage system, as the core power supply unit ensuring the stable operation of automotive electronic devices, has formed a mature system covering R&D, production, and supply chain support. It boasts strong compatibility, seamlessly adapting to all types of vehicles, including gasoline, hybrid, and pure electric vehicles, making it an indispensable basic module in current automotive electrical architecture. To improve the energy of the power battery, hybrid systems use a 48V power battery as their core, but low-voltage electrical equipment still relies on 12V power. Traditional solutions require a separate 12V battery and corresponding battery management subsystem in addition to the 48V power battery module to meet low-voltage power supply needs. The separate design, debugging, and maintenance of the 48V and 12V management systems not only increase system complexity but also raise subsequent maintenance costs. Utility Model Content

[0003] To address the shortcomings of the aforementioned technologies, this invention provides an integrated 12V and 48V power battery CCS.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is: a 12V and 48V integrated power battery CCS, including a vacuum forming plate, on which a first FPC plate and a second FPC plate are fixedly arranged in parallel on the side of the vacuum forming plate facing the battery cell, with the first FPC plate located above the second FPC plate; a cross-connecting aluminum bar is vertically laser-welded between the first FPC plate and the second FPC. Several connecting aluminum bars are fixedly installed on both sides of the first FPC board and both sides of the second FPC board. The connecting aluminum bars on the upper side of the first FPC board have a negative output electrode laser welded to them, and the connecting aluminum bars on the lower side of the second FPC board have a positive output electrode laser welded to them. The upper left corner of the thermoformed panel is fixed with a 12V output terminal for outputting 12V voltage.

[0005] Furthermore, several connecting pieces are welded to both sides of the first FPC board and both sides of the second FPC board, and the other end of the connecting piece is laser-welded to the connecting aluminum bar; the connecting piece and the connecting aluminum bar are set in a one-to-one correspondence.

[0006] Furthermore, the positive output electrode, negative output electrode, bridging aluminum bar, connecting aluminum bar, first FPC board, second FPC board, and 12V output electrode are all heat-riveted to the side of the blister pack facing the battery cell.

[0007] Furthermore, NTC brackets are laser-welded onto both the first and second FPC boards.

[0008] Furthermore, the NTC bracket has a window area in the middle, and a heat-conducting pad is embedded inside the window area.

[0009] Furthermore, support legs are symmetrically fixed at the bottom of the NTC bracket.

[0010] Furthermore, the supporting legs are L-shaped.

[0011] Furthermore, the sides of the thermoformed panel are fixedly provided with several connecting ears for connecting to external structures.

[0012] This utility model discloses an integrated 12V and 48V power battery CCS. By integrating the 12V output terminal with the 48V integrated power battery CCS, the original two management systems are simplified into one. The operation and maintenance of the single battery management system is more convenient, which can effectively reduce the maintenance time and cost during the later use of the vehicle, and also improve the overall operational stability and management efficiency of the battery system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is the front view of the present invention.

[0015] In the diagram: 1. 12V output terminal; 2. Output negative terminal; 3. First FPC board; 4. Bridging aluminum bar; 5. Second FPC board; 6. Connecting aluminum bar; 7. Output positive terminal; 8. NTC bracket; 9. Thermal pad; 10. Vacuum forming board. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1-2 The 12V and 48V integrated power battery CCS shown includes a thermoformed plate 10. In this embodiment, the thermoformed plate 10 is rectangular, and a first FPC plate 3 and a second FPC plate 5 are fixedly arranged parallel to each other on the side of the plastic plate facing the battery cell. In this embodiment, the first FPC plate 3 is located above the second FPC plate 5. A crossbar 4 is vertically laser-welded between the first FPC plate 3 and the second FPC plate 5, that is, the lower end of the first FPC plate 3 is laser-welded to the upper end of the crossbar 4, and the lower end of the crossbar 4 is laser-welded to the lower end of the crossbar 4.

[0018] Several connecting aluminum bars 6 are laser-welded to both sides of the first FPC board 3 and both sides of the second FPC board 5. In this embodiment, ten connecting aluminum bars 6 are laser-welded to both sides of the first FPC board 3 and both sides of the second FPC board 5. Ten connecting pieces are also laser-welded to both sides of the first FPC board 3 and both sides of the second FPC board 5, with the connecting aluminum bars 6 laser-welded to the other end of the connecting pieces. The output negative electrode 2 is laser-welded to the connecting aluminum bars 6 on the upper side of the first FPC board 3, and the output positive electrode 7 is laser-welded to the connecting aluminum bars 6 on the lower side of the second FPC board 5. The output negative electrode 2 is located above the vacuum forming plate 10, and the output positive electrode 7 is located below the vacuum forming plate 10.

[0019] The upper left corner of the thermoformed plate 10 is fixed with a 12V output terminal 1, which is the key interface for the power battery CCS to output 12V voltage to the outside, ensuring a stable connection between it and the 48V conductive circuit inside the CCS.

[0020] The positive output electrode 7, negative output electrode 2, bridging aluminum bar 4, connecting aluminum bar 6, first FPC board 3, second FPC board 5, and 12V output electrode 1 are all heat-riveted to the side of the blister pack 10 facing the battery cell, providing limiting and fixing to meet the required spacing between the battery cells, facilitating subsequent battery cell welding and temperature sampling. It should be noted that different aluminum bars and welding methods are selected according to the different sampling locations on the battery cell.

[0021] NTC brackets 8 are laser-welded onto both the first FPC board 3 and the second FPC board 5, and the NTC brackets 8 are thermally riveted to the vacuum forming plate 10. Support legs, L-shaped, are symmetrically fixed below the NTC brackets 8 to support the NTC thermistors. A window area is provided in the middle of the NTC bracket 8, and a thermally conductive pad 9 is embedded inside the window area, allowing temperature sampling directly from the top cover of the battery cell via the thermally conductive pad 9.

[0022] Several connecting ears are fixedly provided on the side of the thermoformed plate 10 for the installation and positioning of the power battery CCS and the external structure.

[0023] The configuration process of this utility model specifically includes the following steps: First, pre-treat each component to ensure its compatibility and cleanliness. 2. Weld and assemble the core components; Lay the first FPC board 3 and the second FPC board 5 flat on the tooling table, and place the 12V output pole 1, output negative pole 2, output positive pole 7, bridging aluminum bar 4 and connecting aluminum bar 6 according to the design position; Among them, make sure that the copper-plated soldering area of ​​the first FPC board 3 and the second FPC board 5 is precisely aligned with the connection end of each metal component to ensure smooth current conduction after soldering; 3. Attach one end of the positive output electrode 7 to the designated position of the connecting aluminum bar 6, and leave an interface for the other end to connect with the external circuit; at the same time, make the NTC bracket 8 close to the non-soldering area of ​​the first FPC board 3 and the second FPC board 5 to ensure the assembly space of the subsequent temperature acquisition components. Fourth, laser welding is used to weld the connection points of various components. It should be noted that during the welding process, the laser power and welding point parameters need to be controlled to ensure that there are no false welds or missing welds, and that the heat-affected zone of the welding does not damage the substrate of the FPC, so as to ultimately form a stable voltage sampling circuit. This specific setup is a conventional technical means for those skilled in the art. 5. Embed the thermal pad 9 in the window area of ​​the NTC bracket 8. Utilize the size limitation of the bracket window to achieve precise positioning of the thermal pad 9, ensuring that one end of the thermal pad 9 can fit with the subsequent top cover of the battery cell, and the other end can contact the temperature sampling area of ​​the first FPC board 3 and the second FPC board 5, providing a heat conduction channel for temperature sampling. 6. Place the vacuum forming plate 10 on the designated side of the welding assembly, ensuring that the positioning holes and bosses on the vacuum forming plate 10 are precisely aligned with the reserved fixing points of components such as the 12V output terminal 1, the negative output terminal 2, the bridging aluminum bar 4, and the NTC bracket 8. Use a hot riveting device to perform hot riveting treatment on the connection points between the vacuum forming plate 10 and each component to facilitate subsequent cell welding and temperature sampling. After hot riveting, it is necessary to ensure that each component is stably limited by the vacuum forming plate 10, the spacing error between each component does not exceed the design value, and there is no loosening or displacement, ultimately forming a structurally complete integrated CCS assembly. It should be noted that the spacing error between each component is set to the conventional technical means of those skilled in the art. 7. Perform voltage loop testing and temperature function testing on the assembled integrated CCS module. After successful testing, a CCS sampling system integrating voltage and temperature sampling is formed, which reduces the identification error in the CCS sampling process and allows for intuitive, timely and accurate acquisition of the final temperature of the battery cell.

[0024] It should be noted that this CCS design integrates 12V low-voltage output on the basis of meeting 48V power output. Therefore, the 48V function is the basic high-voltage output attribute of the CCS, which is achieved through aluminum bar connection matching the battery pack and conduction at the positive output terminal 7. Through the overall circuit adaptation to the battery cell layout of 48V models, it has 48V output capability. By integrating the 12V output terminal 1 with the 48V integrated power battery CCS battery management system, the original two management systems are simplified into one. The operation and maintenance of this single battery management system are more convenient, effectively reducing maintenance time and costs during vehicle use, and improving the overall operational stability and management efficiency of the battery system. Simultaneously, simplifying two battery modules into one reduces manufacturing and equipment investment costs.

[0025] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A 12V and 48V integrated power battery CCS, comprising a thermoformed panel (10), characterized in that: A first FPC board (3) and a second FPC board (5) are fixedly arranged parallel to one side of the blister board (10) facing the battery cell. The first FPC board (3) is located above the second FPC board (5). A cross-connecting aluminum bar (4) is laser-welded vertically between the first FPC board (3) and the second FPC board (5). Several connecting aluminum bars (6) are fixedly installed on both sides of the first FPC board (3) and both sides of the second FPC board (5). The connecting aluminum bars (6) on the upper side of the first FPC board (3) have a negative output electrode (2) laser-welded on them, and the connecting aluminum bars (6) on the lower side of the second FPC board (5) have a positive output electrode (7) laser-welded on them. The upper left corner of the thermoformed plate (10) is fixed with a 12V output pole (1) for outputting 12V voltage.

2. The 12V and 48V integrated power battery CCS according to claim 1, characterized in that: Several connecting pieces are welded to both sides of the first FPC board (3) and both sides of the second FPC board (5), and the other end of the connecting piece is laser-welded to the connecting aluminum bar (6); the connecting piece and the connecting aluminum bar (6) are set one-to-one.

3. The 12V and 48V integrated power battery CCS according to claim 1, characterized in that: The positive output electrode (7), negative output electrode (2), bridging aluminum bar (4), connecting aluminum bar (6), first FPC board (3), second FPC board (5) and 12V output electrode (1) are all hot-riveted to one side of the blister board (10) facing the battery cell.

4. The 12V and 48V integrated power battery CCS according to claim 1, characterized in that: NTC brackets (8) are laser-welded onto both the first FPC board (3) and the second FPC board (5).

5. The 12V and 48V integrated power battery CCS according to claim 4, characterized in that: The NTC bracket (8) has a window area in the middle, and a heat-conducting pad (9) is embedded inside the window area.

6. The 12V and 48V integrated power battery CCS according to claim 5, characterized in that: The NTC bracket (8) is symmetrically fixed with support legs at its lower part.

7. The 12V and 48V integrated power battery CCS according to claim 6, characterized in that: The supporting leg is L-shaped.

8. The 12V and 48V integrated power battery CCS according to claim 1, characterized in that: The side of the thermoformed plate (10) is fixedly provided with several connecting ears for connecting to the external structure.

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