Reliable voltage acquisition module and CCS using same

Abstract

The utility model discloses a reliable voltage acquisition module and a CCS using the same. The reliable voltage acquisition module of the CCS comprises a nickel sheet and an aluminum bar, at least two lower elastic claws are symmetrically arranged on the two sides of the lower ends of two vertical clamping pieces of an inverted U-shaped elastic clamping part of the nickel sheet, and at least one upper elastic claw is symmetrically arranged in the middle of the upper ends of the two vertical clamping pieces; a wire fixing part at the horizontal end of the nickel sheet is connected with a branch wire in the lateral direction of the collection wire harness; the aluminum bar is provided with a vertical boss, two clamping edge grooves are symmetrically formed in the upper ends and the middle of the two side faces of the vertical boss, the clamping edge grooves in the two sides of the upper end press and clamp the lower elastic claws, the clamping edge grooves in the two sides of the lower end press and clamp the upper elastic claws, and stable and reliable connection of the aluminum bar and the nickel sheet is achieved. The nickel sheet welding fixture has the advantages of being high in universality, effectively preventing welding defects of nickel sheets, and improving the yield and the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of information transmission for new energy batteries, and in particular to a reliable voltage acquisition module and a CCS using the same module. Background Technology

[0002] In new energy vehicle battery packs or energy storage battery packs, CCS integrated busbars are required to realize series and parallel connection of cells and voltage sampling, and transmit information to the BMS system. Currently, the voltage acquisition modules of existing CCSs are generally fixed to the PCAK using ultrasonic welding. Therefore, these voltage acquisition modules are custom-made, and the aluminum bars of the voltage acquisition modules are customized according to customer requirements, requiring different nickel strips to match the aluminum bars. The two are then ultrasonically welded together. The differences are as follows: First, the nickel strips come in various types due to differences in shape and size, which is inconvenient for users' material management, prone to assembly errors, and affects assembly efficiency and yield. Second, during welding, nickel strips may jump out, shift, or warp, causing scrap of both the aluminum bar and the nickel strips, further reducing the yield rate. Third, separate tooling is required to fix the nickel strips during welding; different aluminum bars require different tooling, thus increasing production costs. Utility Model Content

[0003] To address one or more of the aforementioned problems, this invention provides a reliable voltage acquisition module and a CCS using the same.

[0004] According to one aspect of the present invention, a reliable voltage acquisition module includes: a nickel sheet and an aluminum bar;

[0005] The vertical end of the nickel sheet is an inverted U-shaped elastic clamping part. The two vertical clamping pieces of the elastic clamping part are symmetrically provided with at least two lower spring claws on both sides of the lower end and at least one upper spring claw symmetrically provided in the middle of the upper end. The fixed part of the horizontal end of the nickel sheet is connected to a branch line on the side of the acquisition wire harness.

[0006] The aluminum bar has a vertical boss, and two locking grooves are symmetrically provided on the upper part and middle of both sides of the vertical boss. The upper two locking grooves press and engage with the lower spring claw, and the lower two locking grooves press and engage with the upper spring claw, so as to achieve a stable and reliable connection between the aluminum bar and the nickel sheet.

[0007] In some embodiments, the locking groove is a right-angled triangular groove, with the upper groove wall being an upper limit positioning plane and the lower groove wall being an inclined guide plane.

[0008] In some implementations, the aluminum bar is cut into a rectangular hole, and the inner side of the blank is bent vertically upward to form a rectangular vertical boss.

[0009] In some embodiments, each vertical clamping piece has an upper door hole in the middle of its upper hanging piece, and the lower groove wall of the upper door hole has at least one upward and inwardly inclined upper spring claw.

[0010] In some embodiments, each vertical clamping piece has symmetrically arranged upward and inward inclined downward spring claws on both sides of its downward inclined plate.

[0011] In some embodiments, the vertical clamping plate has two lower spring claws symmetrically arranged on both sides and an upper spring claw in the middle.

[0012] In some embodiments, the nickel sheet includes a rectangular sheet body, with a fixed wire portion integrally formed at the horizontal end and an elastic clamping portion integrally formed at the vertical end; a bend radius is formed between the nickel sheet body and the downwardly inclined sheet.

[0013] In some embodiments, the aluminum bar is placed in a positioning groove in the main housing with a small gap, and its positioning hole is connected to the positioning post in the positioning groove.

[0014] This reliable voltage acquisition module employs upper and lower spring claws of the elastic clamping part to hold and fix the upper and lower ends of the vertical boss with locking grooves. This ensures reliable and high-capacity self-locking and stable fixation of the nickel sheet and aluminum bar before welding. The advantages are: First, this structure offers strong product versatility, effectively reducing the variety of parts, facilitating subsequent management, and improving assembly and welding efficiency. Second, installation is efficient and fast, and the tightness of the spring claws and locking grooves effectively prevents the nickel sheet from jumping out during welding, while ensuring the relative position during welding to prevent displacement. Furthermore, the stable connection between the two reduces warping during welding, thus effectively reducing the scrap rate of the aluminum bar and nickel sheet and improving the yield rate. Third, this design allows for a secure and reliable connection between the nickel sheet and aluminum bar, eliminating the need for fixed positioning fixtures to fix the nickel sheet, effectively reducing production costs.

[0015] In some implementations, each aluminum bar is provided with at least one welding hole, which is directly opposite the collection through hole below the positioning groove.

[0016] A CCS includes: a data acquisition harness, a main housing, a connector, and several voltage acquisition modules of any one of the above.

[0017] Several aluminum bars for voltage acquisition modules are fixedly connected to both sides of the main shell. The aluminum bars are welded to the battery module to acquire voltage signals.

[0018] The nickel strip of the voltage acquisition module is fixedly connected to several branch lines at the inner end of the acquisition harness.

[0019] Connect the connector and the outer end of the acquisition harness. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a CCS according to one embodiment of the present invention;

[0021] Figure 2 for Figure 1 A three-dimensional schematic diagram of the voltage acquisition module shown;

[0022] Figure 3 for Figure 2 A three-dimensional schematic diagram of the nickel sheet shown;

[0023] Figure 4 for Figure 3 The diagram shows a front view of the nickel sheet.

[0024] Figure 5 for Figure 2 A three-dimensional schematic diagram of the fixed section shown;

[0025] Voltage acquisition module 00;

[0026] Nickel sheet 1, body 10, wire fixing part 11, wire clamping body 110, gap groove 111, elastic clamping part 12, vertical clamping piece 120, upper hanging piece 121, lower spring claw 122, upper spring claw 123, lower tilting piece 124, bending rounded corner 125, bending arc 126, second gap opening 127, upper door hole 128, first gap opening 129;

[0027] Aluminum bar 2, vertical boss 20, rectangular hole 201, locking groove 202, upper limit plane 203, inclined guide plane 204, input aluminum bar 21, output aluminum bar 22, serial aluminum bar 23, connecting leg 24, positioning hole 25, acquisition hole 26.

[0028] Data acquisition harness 3, horizontal cable 30, branch line 31.

[0029] Main shell 4, positioning groove 41, positioning post 42, wire passage 43, acquisition through hole 44;

[0030] Connector 5. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0032] Figures 1 to 5 A reliable voltage acquisition module according to one embodiment of the present invention and a CCS using the same are illustrated schematically.

[0033] like Figures 2 to 5 As shown, this reliable voltage acquisition module includes: a nickel sheet 1 and an aluminum bar 2;

[0034] The vertical end of the nickel sheet 1 is an inverted U-shaped elastic clamping portion 12. The two vertical clamping pieces 120 of the elastic clamping portion 12 have at least two lower spring claws 122 symmetrically arranged on both sides of their lower ends and at least one upper spring claw 123 symmetrically arranged in the middle of their upper ends. Preferably, each vertical clamping piece 120 has two lower spring claws 122 symmetrically arranged on both sides and one upper spring claw 123 in the middle.

[0035] The fixed wire portion 11 at the horizontal end of the nickel sheet 1 is connected to a branch line 31 on the side of the acquisition wire harness 3.

[0036] The aluminum bar 2 is provided with a vertical boss 20. Preferably, the aluminum bar 2 is cut with a rectangular hole 201, and the inner side of the blank is bent vertically upward to form a rectangular vertical boss 20. The advantages are: the one-piece structure is easy to process, while the structural strength is high and the production process is simplified.

[0037] Two retaining grooves 202 are symmetrically provided on the upper part and middle of both sides of the vertical boss 20. The retaining grooves 202 are preferably right-angled triangular grooves, with the upper groove wall being the upper limit plane 203 and the lower groove wall being the inclined guide plane 204. The advantages are that this structure is easy to install and has good reliable connection.

[0038] The upper two side slots 202 press and connect to the lower spring claw 122, and the lower two side slots 202 press and connect to the upper spring claw 123, so as to achieve a stable and reliable connection between the aluminum bar 2 and the nickel sheet 1; the aluminum bar 2 is welded to the battery module to collect voltage signals.

[0039] This reliable voltage acquisition module uses the upper spring claw 123 and lower spring claw 122 of the elastic clamping part 12 to clamp and fix the upper end and lower end locking groove 202 of the vertical boss 20. It can reliably and securely achieve self-locking and stable fixation of the nickel sheet 1 and aluminum bar 2 before welding. Its beneficial effects are: First, the structure has strong product versatility, effectively reducing the types of parts, facilitating subsequent management, and improving assembly and welding efficiency; Second, the installation is efficient and fast, and the fastening of the spring and locking groove effectively prevents the nickel sheet from jumping out during welding, while ensuring the relative position during welding, preventing welding displacement, and the stable connection between the two reduces warping during welding. Therefore, it effectively reduces the scrap of aluminum bar and nickel sheet and improves the yield rate; Third, the nickel sheet and aluminum bar of this design can be firmly and securely connected without the need for fixed positioning fixtures to fix the nickel sheet, effectively reducing production costs.

[0040] Furthermore, each vertical clamping piece 120 has an upper opening 128 in the middle of its upper hanging piece 121. The lower groove wall of the upper opening 128 has at least one upward and inwardly inclined upper spring claw 123. The upper spring claw 123 has U-shaped first gap openings 129 on both sides and a first upper clearance opening at the upper end. Its advantages are: the spring claw of this structure is simple and has good elasticity, and the one-piece structure is easy to process and has high structural strength.

[0041] The lower root of the upper spring claw 123 is provided with a first transition arc. Its beneficial effect is that the first transition arc can effectively reduce structural stress and improve the overall structural strength.

[0042] Furthermore, each vertical clamping piece 120 has symmetrically arranged upward and inwardly inclined lower spring claws 122 on both sides of its downward inclined piece 124. The inner side of the lower spring claw 122 has a U-shaped second gap opening 127, and the upper side has a second upper clearance opening communicating with the second gap opening 127. The beneficial effects are: the spring claws of this structure are simple and have good elasticity, while the one-piece structure is easy to process and has high structural strength.

[0043] Preferably, the upper corner of the inner side of the upper spring claw 123 and the lower spring claw 122 is provided with a soft arc;

[0044] Alternatively, a curved arc 126 may be provided between the downward tilting plate 124 and the upward drooping plate 121. The beneficial effect is that the curved arc can effectively reduce structural stress and improve the overall structural strength.

[0045] Furthermore, the nickel sheet 1 includes a horizontally rectangular sheet-shaped body 10, with a fixed wire portion 11 integrally formed at the horizontal end and an elastic clamping portion 12 integrally formed at the vertical end; a bending radius 125 is formed between the body 10 of the nickel sheet 1 and the inner downwardly inclined sheet 124. Its advantages are: this structure is easy to manufacture and has high structural strength.

[0046] Preferably, the cable fixing part 11 includes at least one U-shaped cable clamping body 110, and an upper-opening gap groove 111 is provided between adjacent cable clamping bodies 10 to clamp the two ends of the cable clamping body 10 and bend them inward to wrap and fix the branch wire 31. Its advantages are: this structure facilitates the fixing of cables and can be matched with cables of various diameters, with strong adaptability.

[0047] Preferably, the aluminum bar 2 is placed with a small gap in the positioning groove 41 of the main housing 4, and its positioning hole 25 is sleeved and connected to the positioning post 42 inside the positioning groove 41; the positioning groove 41 is preferably rectangular. The beneficial effect is that the cooperation between the positioning post 42 and the fixing hole 25 effectively improves the installation accuracy of the aluminum bar 2 and the main housing 4.

[0048] Preferably, each aluminum bar 2 is provided with at least one welding hole 27, which is directly opposite the acquisition through hole 44 below the positioning groove 41. The advantage of this arrangement is that it further improves the installation accuracy of the CCS.

[0049] Preferably, the plurality of aluminum bars 2 include an input aluminum bar 21, an output aluminum bar 22 and the remaining serially connected aluminum bars 23, and both the input aluminum bar 21 and the output aluminum bar 22 are provided with external connecting feet 24.

[0050] The positioning grooves 41 at both ends of one side of the main shell 4 are open end face grooves, while the remaining positioning grooves 41 are closed grooves. The input aluminum bar 21 and the output aluminum bar 22 are installed in the two open end face grooves, and the series aluminum bar 23 is installed in the closed groove. Its advantages are: the overall structure of this arrangement is compact and the volume is small.

[0051] like Figures 1 to 5 As shown, a CCS includes: a data acquisition harness 3, a main housing 4, a connector 5, and several voltage acquisition modules 00 according to any one of claims 1 to 9.

[0052] Several aluminum bars 2 of voltage acquisition modules 00 are fixedly connected to both sides of the main shell 4. The aluminum bars 2 are welded to the battery module to acquire voltage signals.

[0053] Several branch lines 31 at the inner end of the acquisition harness 3 are fixedly connected to the wire fixing part 11 of the nickel sheet 1 of the voltage acquisition module 00;

[0054] Connector 5 and the outer end of the acquisition harness 3 are plugged in. This CCS has a reliable fixed voltage acquisition module 00. Its beneficial effects are: First, this CCS effectively reduces the types of parts, facilitates subsequent management, effectively reduces the assembly error rate, and improves assembly and welding efficiency; Second, this CCS effectively prevents the nickel sheet from jumping out during the welding process, while ensuring the relative position during welding, preventing welding displacement, and the stable connection between the two reduces warping during the welding process. Therefore, it effectively reduces the scrap of aluminum bar and nickel sheet and improves the yield rate; Third, the nickel sheet and aluminum bar of this CCS have a new mating structure, which can firmly and reliably connect without the need for fixed positioning fixtures to fix the nickel sheet, effectively reducing production costs.

[0055] Furthermore, several positioning slots 41 are provided on both sides of the main shell 4, and each positioning slot 41 is provided with a wire through hole 43. Each positioning slot 41 is fixedly connected to an aluminum bar 2 of a voltage acquisition module 00. Its beneficial effect is that this setting can improve the installation accuracy, while ensuring the cable routing direction and effectively reducing the product size.

[0056] Furthermore, the two parallel horizontal wires 30 of the acquisition wire harness 3 are located in the middle of the main shell 4. The outer surfaces of the two horizontal wires 30 are provided with several branch wires 31. Each branch wire 31 passes through the wire hole 43 and is fixedly connected to the wire fixing part 11 of the nickel sheet 1 of the voltage acquisition module 00.

[0057] Preferably, the inner wall of the closed groove is provided with at least one small-sized wire passage opening 43. The inner wall of the end face opening groove is removed to form the wire passage opening 43. The branch wire 31 enters the wire passage opening 43 of the closed groove perpendicularly and is clamped and fixed by the wire fixing part 11; the branch wire 31 passes obliquely through the wire passage opening of the end face opening groove and is clamped and fixed by the wire fixing part 11. The beneficial effects are: this setting optimizes the wire harness distribution, ensures a good wiring layout, and reduces the product size.

[0058] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A reliable voltage acquisition module, characterized in that, Includes: nickel sheet (1) and aluminum foil (2); The vertical end of the nickel sheet (1) is an inverted U-shaped elastic clamping part (12). The two vertical clamping pieces (120) of the elastic clamping part (12) are symmetrically provided with at least two lower spring claws (122) on both sides of the lower end and at least one upper spring claw (123) is symmetrically provided in the middle of the upper end. The wire fixing part (11) at the horizontal end of the nickel sheet (1) is connected to a branch line (31) on the side of the acquisition wire harness (3). The aluminum bar (2) is provided with a vertical boss (20). The upper part and the middle of both sides of the vertical boss (20) are symmetrically provided with two locking grooves (202). The locking grooves (202) on both sides of the upper end press and engage with the lower spring claw (122), and the locking grooves (202) on both sides of the lower end press and engage with the upper spring claw (123), so as to realize a stable and reliable connection between the aluminum bar (2) and the nickel sheet (1).

2. The reliable voltage acquisition module according to claim 1, characterized in that, The locking groove (202) is a right-angled triangular groove, with the upper groove wall being an upper limit positioning plane (203) and the lower groove wall being an inclined guide plane (204).

3. The reliable voltage acquisition module according to claim 1, characterized in that, Aluminum bar (2) cuts a rectangular hole (201), and the inner side of the hole is bent vertically upward to form a rectangular vertical boss (20).

4. A reliable voltage acquisition module according to claim 1, characterized in that, Each vertical clamping piece (120) has an upper door hole (128) in the middle of its upper hanging piece (121), and the lower groove wall of the upper door hole (128) is provided with at least one upward and inward inclined upper spring claw (123).

5. A reliable voltage acquisition module according to claim 1, characterized in that, Each vertical clamping piece (120) has symmetrically arranged upward and inward inclined downward spring claws (122) on both sides of the downward inclined piece (124).

6. A reliable voltage acquisition module according to claim 1, characterized in that, The vertical clamping plate (120) has two lower spring claws (122) symmetrically arranged on both sides and an upper spring claw (123) in the middle.

7. A reliable voltage acquisition module according to any one of claims 1 to 6, characterized in that, The nickel sheet (1) includes a rectangular sheet body (10), the horizontal end of which is integrally formed into a fixing part (11) and the vertical end is integrally formed into an elastic clamping part (12); a bent rounded corner (125) is formed between the body (10) of the nickel sheet (1) and the downward inclined sheet (124).

8. A reliable voltage acquisition module according to claim 1, characterized in that, The aluminum bar (2) is placed in the positioning groove (41) of the main shell (4) with a small gap, and its positioning hole (25) is connected to the positioning post (42) in the positioning groove (41).

9. A reliable voltage acquisition module according to claim 1, characterized in that, Each of the aluminum bars (2) is provided with at least one welding hole (27), which is directly opposite the collection through hole (44) below the positioning groove (41).

10. A CCS, characterized in that, Includes: a data acquisition harness (3), a main housing (4), a connector (5), and several voltage acquisition modules (00) as described in any one of claims 1 to 9; The main shell (4) has several aluminum bars (2) of the voltage acquisition module (00) fixedly connected to both sides. The aluminum bars (2) are welded to the battery module to acquire voltage signals. The several branch wires (31) at the inner end of the acquisition harness (3) are fixedly connected to the wire fixing part (11) of the nickel sheet (1) of the voltage acquisition module (00); The connector (5) and the outer end of the acquisition harness (3) are plugged in.

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