A CCS fixing support

Abstract

The utility model provides a kind of CCS fixed support applied to CCS support field, including support body, for the end of branch control line of fixed CCS;Branch control line includes flexible circuit board and terminal sheet plate;Support body includes XY direction limiting base plate;The middle part of XY direction limiting base plate is equipped with reinforcing protrusion, and reinforcing protrusion is equipped with access hole;XY direction limiting base plate one side is equipped with Z direction limiting column, the other side is equipped with protection groove and limiting groove, and limiting groove is fixed in with the pressing convex edge for pressing terminal sheet plate;The recess profile adaptation of the application through XY direction limiting base plate, width interference fit, and the vertical constraint of Z direction limiting column, realize the accurate fixing of branch control line in three-dimensional direction, through the design of wrapping type of protection groove to flexible circuit board, the collaborative fixing of limiting groove and pressing convex edge, dust, humidity can be effectively isolated to the erosion of control line, prevent extrusion damage by external force simultaneously, and line breakage rate and terminal oxidation risk are effectively reduced.

Description

Technical Field

[0001] This application relates to the field of CCS supports, and in particular to a CCS fixation support. Background Technology

[0002] In the application of power battery packs and energy storage battery cabinets in new energy vehicles, the CCS (Computer-Controlled System) is a key component connecting the battery cells and the BMS (Battery Management System). The reliability of its branch control lines directly affects the signal acquisition accuracy and operational safety. Currently, the industry mostly uses simple clips, adhesives, or general-purpose plastic brackets for fixing, which has certain shortcomings.

[0003] Without precise constraints in the XY (horizontal) and Z (vertical) directions, the control lines are prone to misalignment and terminals to loosening when the vehicle is bumpy, the battery pack vibrates, or the temperature changes, resulting in signal interruption or acquisition errors. The connection between the flexible circuit board and the terminal piece is exposed to dust, moisture, and electrolyte volatiles inside the battery pack, and there is no anti-compression design, which can easily lead to line wear and terminal oxidation with long-term use.

[0004] Therefore, a CCS fixing bracket is proposed. Utility Model Content

[0005] The purpose of this application is to address the technical problems of insufficient positioning accuracy and poor protection performance of existing CCS fixing brackets. Compared with the prior art, this application provides a CCS fixing bracket, including a bracket body, which is disposed on the battery and used to fix the end of the branch control line of the CCS.

[0006] The branch control line includes a flexible circuit board for signal transmission and a terminal board for connection to the battery cell or BMS interface.

[0007] The support body includes an XY-direction limiting substrate, which is a rectangular rigid substrate;

[0008] The XY-direction limiting substrate has a reinforcing protrusion extending along the thickness direction of the substrate in the middle, and the reinforcing protrusion has a maintenance hole for maintenance.

[0009] The XY-direction limiting substrate is provided with two sets of symmetrically distributed Z-direction limiting posts on the side away from the branch control line, and the Z-direction limiting posts are perpendicular to the surface of the XY-direction limiting substrate.

[0010] The XY-direction limiting substrate has a protective groove and a limiting groove on the side near the branch control line. The protective groove is used to accommodate the flexible circuit board, and the limiting groove is used to fix the terminal plate. A pressing protrusion for pressing the terminal plate is fixed in the limiting groove.

[0011] Furthermore, the depth of the protective groove is greater than the thickness of the flexible circuit board;

[0012] The depth of the limiting groove is equal to the thickness of the terminal plate;

[0013] The thickness of the pressing flange is less than the thickness of the terminal plate.

[0014] Furthermore, the groove outline of the limiting groove matches the outer outline of the terminal plate;

[0015] The width of the limiting groove along the length of the branch control line is narrower than the width of the terminal plate along the length of the branch control line.

[0016] The width of the protective groove is equal to the width of the flexible circuit board.

[0017] Furthermore, the side of the pressing protrusion closest to the terminal plate is provided with several anti-detachment protrusions, which are sawtooth-shaped protrusions or strip-shaped protrusions distributed along the length direction of the pressing protrusion.

[0018] Furthermore, the Z-direction limiting post is provided with an assembly hole, which is a threaded hole or a snap-fit ​​hole, and the Z-direction limiting post is detachably connected to the top shell of the battery through the assembly hole.

[0019] Furthermore, when the assembly hole is a threaded hole, the Z-direction limiting post is fixed to the top housing of the battery by bolts;

[0020] When the assembly hole is a snap-fit ​​hole, the Z-direction limiting post is snapped into the top casing of the battery via a snap-fit.

[0021] Compared to existing technologies, the advantages of this application are:

[0022] This application achieves precise fixation of branch control lines in three dimensions through the groove contour adaptation and width interference fit of the XY-direction limiting substrate and the vertical constraint of the Z-direction limiting post. The protective groove wrapping design of the flexible circuit board and the synergistic fixation of the limiting groove and the pressing protrusion can effectively isolate the control lines from dust and humidity, while preventing damage from external extrusion. The circuit breakage rate and terminal oxidation risk are effectively reduced. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the installation of this application on the battery;

[0024] Figure 2 This is a schematic diagram of the installation of this application and the branch control line;

[0025] Figure 3 This is an exploded structural diagram of the application and the branch control line;

[0026] Figure 4 This is a schematic diagram of the bottom structure of this application;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of this application.

[0028] Explanation of the labels in the diagram:

[0029] 1. Battery; 2. Branch control line; 21. Flexible circuit board; 22. Terminal plate; 3. Bracket body; 31. XY direction limiting base plate; 32. Z direction limiting post; 321. Assembly hole; 33. Reinforcing protrusion; 331. Inspection hole; 34. Protective groove; 35. Limiting groove; 36. Pressing protrusion; 361. Anti-detachment texture. Detailed Implementation

[0030] The embodiments will be described clearly and completely with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0031] Example:

[0032] This utility model provides a CCS fixing bracket. Please refer to [link / reference]. Figure 1 - Figure 5 It includes a bracket body 3, which is set on the top shell of the battery 1. Its core function is to fix the end of the branch control line 2 of the CCS and prevent the branch control line from shifting during the operation of the battery pack.

[0033] The branch control line 2 includes a flexible circuit board 21 for signal transmission and a terminal board 22 for connection with the battery cell pole or BMS interface. The two are fixedly connected by integral molding or welding to ensure the continuity of signal transmission.

[0034] The bracket body 3 includes an XY-direction limiting base plate 31, which is a rectangular rigid base plate. The rectangular structure design makes it easy to adapt to the installation space of the top shell of the battery and reduces the assembly difficulty.

[0035] A reinforcing protrusion 33 extending along the thickness direction is provided in the middle of the XY direction limiting substrate 31. The design of extending along the thickness direction can improve the vertical structural strength of the substrate and prevent the substrate from bending and deforming when subjected to force or temperature changes. A maintenance hole 331 for inspection is provided through the reinforcing protrusion 33. The maintenance hole 331 can directly expose the key connection parts of the branch control line 2, and the inspection can be completed without disassembling the bracket, improving the convenience of maintenance.

[0036] Two sets of symmetrically distributed Z-direction limiting posts 32 are provided on the side of the XY direction limiting substrate 31 away from the branch control line 2. The Z-direction limiting posts 32 are perpendicular to the surface of the XY direction limiting substrate 31. Their function is to limit the displacement of the bracket body 3 and the branch control line 2 in the vertical direction, avoid interference with other components in the battery pack such as cell cover plates and cooling pipes, and enhance the connection stability between the bracket body 3 and the battery casing.

[0037] The XY-direction limiting substrate 31 has a protective groove 34 and a limiting groove 35 on the side near the branch control line 2. The protective groove 34 is used to accommodate the flexible circuit board 21 and provide a wrap-around protection for the flexible circuit board to avoid external pressure or dust corrosion. The limiting groove 35 is used to fix the terminal plate 22 to ensure the horizontal position of the terminal plate is stable. A pressing flange 36 for pressing the terminal plate 22 is fixed in the limiting groove 35. The longitudinal constraint of the pressing flange prevents the terminal plate 22 from loosening under vibration conditions.

[0038] The depth of the protective groove 34 is greater than the thickness of the flexible circuit board 21. This design can form a "gap buffer" after the flexible circuit board is embedded, avoiding direct pressure on the flexible circuit board when the substrate is thermally expanded or squeezed by external force, thus preventing circuit damage. The depth of the limiting groove 35 is equal to the thickness of the terminal plate 22, ensuring that the terminal plate 22 is flush with the surface of the XY-direction limiting substrate 31 after being embedded, thus avoiding assembly interference caused by the protrusion of the terminal plate 22. The thickness of the pressing protrusion 36 is less than the thickness of the terminal plate 22, which ensures the pressing force of the pressing protrusion 36 on the terminal plate 22, while avoiding blocking the contact area between the connection interface of the terminal plate 22 and the cell electrode post, thus not affecting signal transmission.

[0039] The groove contour of the limiting groove 35 matches the outer contour of the terminal plate 22. By "contour adaptation", the terminal plate 22 rotates in the horizontal direction, improving the limiting accuracy. The width of the limiting groove 35 along the length of the branch control line 2 is narrower than the width of the terminal plate 22 along the length of the branch control line 2. By "interference fit", the terminal plate 22 is tightly fixed in the length direction, avoiding displacement caused by vibration. The groove width of the protective groove 34 is equal to the width of the flexible circuit board 21, ensuring that there is no lateral gap after the flexible circuit board 21 is embedded, preventing line offset.

[0040] The pressing flange 36 is provided with a number of anti-detachment ridges 361 on the side near the terminal plate 22. The anti-detachment ridges 361 are sawtooth-shaped ridges or strip-shaped ridges distributed along the length of the pressing flange 36. The sawtooth-shaped ridges can enhance the friction with the terminal plate through "tooth engagement", while the strip-shaped ridges can improve the pressing stability by increasing the contact area. Both types of ridges can effectively prevent the terminal plate 22 from loosening under vibration conditions.

[0041] The Z-direction limiting post 32 is provided with an assembly hole 321, which can be a threaded hole or a snap-fit ​​hole. The threaded hole is suitable for bolt connection and is applicable to scenarios with high connection strength requirements, such as commercial vehicle battery packs. The snap-fit ​​hole is suitable for snap-fit ​​connection and is applicable to scenarios with lightweight and quick installation requirements, such as passenger vehicle battery packs. Both assembly methods enable detachable connection between the bracket body and the top shell of the battery 1, which is convenient for later maintenance or replacement.

[0042] During use, the flexible circuit board 21 of the branch control line 2 is first embedded into the protective groove 34 of the XY direction limiting base plate 31. Since the width of the protective groove 34 is the same as the width of the flexible circuit board 21, it ensures no lateral offset. The groove depth of the protective groove 34 is greater than the thickness of the flexible circuit board 21, forming a buffer protection. At the same time, the terminal plate 22 is embedded into the limiting groove 35. The contour of the limiting groove 35 matches the terminal plate 22, and the width is slightly narrower than the terminal plate 22. Through interference fit, a tight fixation in the horizontal direction is achieved.

[0043] The pressing protrusion 36 in the limiting groove 35 forms a longitudinal pressing on the terminal plate 22. The thickness of the pressing protrusion is less than the thickness of the terminal plate 22, so it does not block the connection interface. The anti-loosening protrusion 361 further enhances the fixing effect through friction and prevents vibration from loosening.

[0044] The bracket body 3 is connected to the top shell of the battery 1 through the mounting hole 321 on the Z-direction limiting post 32. If the mounting hole 321 is a threaded hole, it is fastened with bolts; if the mounting hole 321 is a snap-fit ​​hole, it is snapped together. The Z-direction limiting post 32 is perpendicular to the surface of the XY-direction limiting base plate 31, which limits the displacement of the bracket in the vertical direction and avoids interference with other components.

[0045] When it is necessary to check the connection status of the branch control line 2, the connection status between the terminal plate and the battery cell / BMS can be directly observed through the inspection hole 331 on the reinforced protrusion 33, or the test probe can be used to contact the terminal through the inspection hole without disassembling the bracket, which greatly improves maintenance efficiency.

[0046] This application achieves precise fixation of the branch control line 2 in three dimensions through the groove contour adaptation and width interference fit of the XY-direction limiting substrate 31 and the vertical constraint of the Z-direction limiting post 32. Through the wrapping design of the protective groove 34 on the flexible circuit board 21 and the coordinated fixation of the limiting groove 35 and the pressing protrusion 36, the corrosion of dust and humidity on the control line can be effectively isolated, while preventing damage from external force squeezing. The line breakage rate and terminal oxidation risk are effectively reduced.

[0047] The above description is only the best implementation method adopted in this application in combination with current practical needs, but the scope of protection of this application is not limited thereto.

Claims

1. A CCS fixing bracket, comprising a bracket body (3), characterized in that: The bracket body (3) is mounted on the battery (1) and is used to fix the end of the branch control line (2) of the CCS; The branch control line (2) includes a flexible circuit board (21) for signal transmission and a terminal board (22) for connection to the battery cell or BMS interface; The support body (3) includes an XY-direction limiting substrate (31), which is a rectangular rigid substrate. The XY-direction limiting substrate (31) has a reinforcing protrusion (33) extending along the thickness direction of the substrate in the middle part, and a maintenance hole (331) for maintenance is provided through the reinforcing protrusion (33). The XY-direction limiting substrate (31) has two sets of symmetrically distributed Z-direction limiting posts (32) on the side away from the branch control line (2), and the Z-direction limiting posts (32) are perpendicular to the surface of the XY-direction limiting substrate (31). The XY-direction limiting substrate (31) is provided with a protective groove (34) and a limiting groove (35) on the side near the branch control line (2). The protective groove (34) is used to accommodate the flexible circuit board (21), and the limiting groove (35) is used to fix the terminal plate (22). A pressing flange (36) for pressing the terminal plate (22) is fixed in the limiting groove (35).

2. The CCS fixing bracket according to claim 1, characterized in that, The depth of the protective groove (34) is greater than the thickness of the flexible circuit board (21); The depth of the limiting groove (35) is equal to the thickness of the terminal plate (22); The thickness of the pressing flange (36) is less than the thickness of the terminal plate (22).

3. A CCS fixing bracket according to claim 2, characterized in that, The groove outline of the limiting groove (35) matches the outer outline of the terminal plate (22); The width of the limiting groove (35) along the length of the branch control line (2) is narrower than the width of the terminal plate (22) along the length of the branch control line (2); The width of the groove (34) is equal to the width of the flexible circuit board (21).

4. A CCS fixing bracket according to claim 1, characterized in that, The pressing flange (36) has a plurality of anti-detachment ridges (361) on the side near the terminal plate (22). The anti-detachment ridges (361) are sawtooth-shaped ridges or strip-shaped ridges distributed along the length of the pressing flange (36).

5. A CCS fixing bracket according to claim 1, characterized in that, The Z-direction limiting post (32) is provided with an assembly hole (321), which is a threaded hole or a snap-fit ​​hole. The Z-direction limiting post (32) is detachably connected to the top shell of the battery (1) through the assembly hole (321).

6. A CCS fixing bracket according to claim 5, characterized in that, When the assembly hole (321) is a threaded hole, the Z-direction limiting post (32) is fixed to the top shell of the battery (1) by bolts; When the assembly hole (321) is a snap-fit ​​hole, the Z-direction limiting post (32) is snapped into the top shell of the battery (1) by a snap-fit.

Images