Lithium ion battery series-parallel connection plate convenient to fix and insulate

Abstract

A lithium ion battery series-parallel connection plate convenient to fix and insulate comprises an insulating plate, a busbar and a fixing assembly, the busbar and the fixing assembly are distributed on the insulating plate, the fixing assembly comprises a strip-shaped fixing plate, the strip-shaped fixing plate is attached to the insulating plate, the two ends of the strip-shaped fixing plate are fixed to the insulating plate in a press riveting mode, and press riveting pier heads are formed on the lower surface of the insulating plate. A mounting hole is formed in the middle of the strip-shaped fixing plate, and a nut or a stud is fixedly connected into the mounting hole; a second insulating plate is compounded on the lower surface of the insulating plate and covers the pressing rivet pier head; the nut or the stud is fixedly connected to the strip-shaped fixing plate, and then the two ends of the strip-shaped fixing plate are riveted on the insulating plate, so that the connecting strength between the insulating plate and the nut and the stud is improved, and the nut and the stud can bear larger loading force or vibration quantity; in addition, the second insulating plate covering the pressing rivet pier head is arranged on the lower surface of the insulating plate, so that electric leakage or short circuit of the battery pack through the pressing rivet pier head is avoided.

Description

Technical Field

[0001] The utility model relates to a lithium ion battery series-parallel plate, in particular to a lithium ion battery series-parallel plate which is easy to fix and insulate. Background Art

[0002] Several busbars are fixedly connected to an insulating plate to form a series-parallel board, and the series-parallel connection of battery packs is achieved through the series-parallel board. Authorization publication number CN219163633U discloses a series-parallel board for lithium-ion batteries with a gasket. This board facilitates positive and negative electrode wiring and has good insulation. To apply this board in more complex environments, it needs to be fixedly connected to other components, so improvements are needed to this board. Utility Model Content

[0003] In response to the problems in the prior art, the utility model provides a lithium-ion battery series-parallel board that is easy to fix and insulate, with the purpose of adding fixing points on the series-parallel board and ensuring the connection strength between the fixing points and the insulating board and the insulation of the fixing points.

[0004] A lithium-ion battery series-parallel plate that is easy to fix and insulate, comprising an insulating plate and several busbars, the busbars being attached and riveted to the upper surface of the insulating plate and forming riveted piers on the lower surface of the insulating plate, a strip through-slot for passing the pole ear is provided on the insulating plate at the side of the busbar, the strip through-slot and the busbar have the same long direction, a fixing assembly is distributed on the insulating plate, the fixing assembly comprises a strip fixing plate, the strip fixing plate is attached to the insulating plate, both end portions of the strip fixing plate are riveted to the insulating plate and form riveted piers on the lower surface of the insulating plate, a mounting hole is provided in the middle of the strip fixing plate, a nut or stud is fixedly connected in the mounting hole; a second insulating plate is composited on the lower surface of the insulating plate, the second insulating plate covers the riveted pier, and a clearance slot is provided on the second insulating plate at a position corresponding to the strip through-slot.

[0005] Furthermore, the thickness of the second insulating plate is smaller than the thickness of the insulating plate.

[0006] Furthermore, nuts and studs are respectively provided on different strip-shaped fixing plates, and both the nuts and studs extend in a direction away from the insulating plate and are arranged perpendicular to the insulating plate.

[0007] Furthermore, two rows of busbars are distributed on the insulating plate, and a fixing component is arranged between the two rows of busbars.

[0008] Furthermore, the busbars in the two rows of busbars are arranged in a staggered manner, and the long direction of the strip fixing plate located between the two rows of busbars is arranged along the row direction of the two rows of busbars.

[0009] Further, the busbars in the two columns of busbars are staggered, the long direction of the strip-shaped fixing plate between the two columns of busbars is arranged transversely to the column direction of the two columns of busbars, and the two sides of the middle part of the strip-shaped fixing plate are close to the end parts of the corresponding busbars in the two columns of busbars.

[0010] Further, the components in the fixing assembly are all made of stainless steel.

[0011] Further, the mounting holes on the strip-shaped fixing plate are in interference fit or welded with the nuts or the studs.

[0012] Further, the second insulating plate is attached to and bonded with the insulating plate.

[0013] Further, the displacement slot and the strip-shaped slot are of the same specification and coincide with each other.

[0014] The utility model discloses beneficial effects: first nut or stud is fixedly connected on strip-shaped fixing plate, and the both ends of strip-shaped fixing plate are riveted on insulating plate, thereby improving the connecting strength of insulating plate and nut and stud, and making nut and stud can bear greater load force or vibration amount, and the cost is low and convenient for batch assembly, in addition, through setting the second insulating plate covering riveting boss on the lower surface of insulating plate, thereby avoiding that battery pack leaks electricity or short-circuit through riveting boss. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overhead structure schematic diagram of first embodiment in the utility model;

[0016] Figure 2 It is the side structure schematic diagram of first embodiment in the utility model;

[0017] Figure 3 It is the structure schematic diagram of insulating plate in the utility model;

[0018] Figure 4 It is the structure schematic diagram of second insulating plate in the utility model;

[0019] Figure 5 It is the assembly structure schematic diagram of fixing assembly, insulating plate and second insulating plate in the utility model;

[0020] Figure 6 It is the connection structure schematic diagram of strip-shaped fixing plate and nut in the utility model;

[0021] Figure 7 It is the connection structure schematic diagram of strip-shaped fixing plate and stud in the utility model;

[0022] Figure 8 It is the side structure schematic diagram of second embodiment in the utility model. DETAILED DESCRIPTION

[0023] The utility model will be described in detail below with reference to the drawings. The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the utility model and cannot be interpreted as a limitation on the utility model. The left, middle, right, upper, lower and other orientation terms in the embodiments of the utility model are only relative concepts or are referenced to the normal use state of the product, and should not be considered as limiting.

[0024] First embodiment:

[0025] A lithium ion battery series-parallel connection plate convenient to fix and insulate, in combination with Figure 1 and Figure 2 As shown, it comprises an insulating plate 1 and a plurality of busbars 3, the busbars 3 are attached and riveted on the upper surface of the insulating plate 1 and form riveted protrusions on the lower surface of the insulating plate 1 (not shown in the figure), and a strip-shaped through slot 11 for passing through the tab is formed on the insulating plate 1 at the position on the side of the busbar 3, the strip-shaped through slot 11 is the same as the long direction of the busbar 3, and a fixing assembly 2 is distributed on the insulating plate 1, each component in the fixing assembly 2 is made of stainless steel, in combination with Figures 5 to 7 As shown, the fixing assembly 2 comprises a strip-shaped fixing plate 21, the strip-shaped fixing plate 21 is attached to the insulating plate 1, both ends of the strip-shaped fixing plate 21 are riveted and fixed to the insulating plate 1 and form riveted protrusions 5 on the lower surface of the insulating plate 1, and a mounting hole 211 is formed in the middle of the strip-shaped fixing plate 21, a nut 22 or a stud 23 is fixedly connected in the mounting hole 211, specifically, the mounting hole 211 on the strip-shaped fixing plate 21 is interference-fitted or welded with the nut 22 or the stud 23; in combination with Figure 3 and Figure 4 As shown, a second insulating plate 4 is compounded on the lower surface of the insulating plate 1, specifically, the second insulating plate 4 is attached and bonded to the insulating plate 1, the second insulating plate 4 covers the riveted protrusions 5, and a gap slot 41 is formed on the second insulating plate 4 at the position corresponding to the strip-shaped through slot 11, the gap slot 41 and the strip-shaped through slot 11 are the same in specification and coincide with each other; in order to reduce the overall weight of the utility model, because the second insulating plate 4 is mainly used for isolating and insulating the riveted protrusions 5, the thickness of the second insulating plate 4 is less than the thickness of the insulating plate 1, so as to reduce the weight of the second insulating plate 4.

[0026] Wherein, the screw cap 22 and the stud 23 are arranged on the different strip fixed plate 21 respectively, and the screw cap 22 and the stud 23 are extended to the direction away from the insulating plate 1 and are arranged perpendicularly, two rows of bus bars are arranged on the insulating plate 1, the fixed assembly 2 is arranged between the two rows of bus bars, and the fixed assembly 2 is also arranged at the side edge position of the insulating plate 1, the bus bars 3 in the two rows of bus bars are arranged staggeredly, that is, the bus bar 3 in one row of bus bars corresponds to the gap between the adjacent two bus bars 3 in another row of bus bars, and the long direction of the strip fixed plate 21 between the two rows of bus bars is arranged along the row direction of the two rows of bus bars, in addition, the accommodating groove 12 is arranged on the insulating plate 1 at the position corresponding to the through hole of the screw cap 22, so that the screw can be inserted into the accommodating groove 12 after passing through the screw cap 22, and the fixing effect of the screw and the screw cap 22 is increased.

[0027] In use, the series-parallel plate is assembled with the battery pack first, the pole lug in the battery pack is sequentially inserted into the accommodation slot 41 and the strip-shaped slot 11 and then is electrically connected with the corresponding bus bar 3, the second insulating plate 4 separates the riveting dome head 5 from the battery pack, so that the contact between the pole lug of the battery pack and the riveting dome head 5 is effectively avoided, the utility model can be fixed through the screw cap 22 and the stud 23, or other parts that need to be fixedly connected with the insulating plate 1 can be fixed.

[0028] Second embodiment:

[0029] Other technical features are the same as those of the first embodiment, which are combined with Figure 8 As shown in the figure, the bus bars 3 in the two rows of bus bars are arranged staggeredly, the long direction of the strip fixed plate 21 between the two rows of bus bars is arranged crossly with the row direction of the two rows of bus bars, and the two sides of the middle part of the strip fixed plate 21 are respectively close to the end part of the corresponding bus bar 3 in the two rows of bus bars, so that the structure of the utility model is more compact, and the space utilization is improved.

[0030] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall into the scope of the utility model claimed for protection. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery series-parallel board for easy fixation and insulation, comprising an insulating plate and a plurality of busbars, wherein the busbars are bonded and riveted to the upper surface of the insulating plate and have riveted piers formed on the lower surface of the insulating plate. Strip-shaped through-slots for receiving tabs are provided on the insulating plate at the sides of the busbars, and the longitudinal direction of the strip-shaped through-slots and the busbars are the same. The invention is characterized in that: The fixing assembly is distributed on the insulation plate, and the fixing assembly comprises a strip-shaped fixing plate which is attached to the insulation plate, both ends of the strip-shaped fixing plate are press riveted to the insulation plate and form press riveting bosses on the lower surface of the insulation plate, a mounting hole is formed in the middle of the strip-shaped fixing plate, and a nut or a stud is fixedly connected in the mounting hole; a second insulation plate is compounded on the lower surface of the insulation plate, the second insulation plate covers the press riveting bosses, and a displacement slot is formed in the second insulation plate at a position corresponding to the strip-shaped slot.

2. The lithium ion battery string and parallel plate for easy fixation and insulation according to claim 1, characterized in that: The thickness of the second insulation plate is less than the thickness of the insulation plate.

3. The lithium ion battery string and parallel plate for easy fixation and insulation according to claim 1, characterized in that: The nut and the stud are respectively arranged on different strip-shaped fixing plates, and both the nut and the stud extend away from the insulation plate and are arranged perpendicularly to the insulation plate.

4. The lithium ion battery stringing and paralleling board convenient for fixation and insulation according to claim 1 or 2 or 3, characterized in that: The fixing assembly is distributed between two columns of bus bars on the insulation plate.

5. The lithium ion battery string and parallel plate for easy fixation and insulation of claim 4, wherein: The bus bars in the two columns of bus bars are arranged alternately, and the long direction of the strip-shaped fixing plate between the two columns of bus bars is arranged along the column direction of the two columns of bus bars.

6. The lithium ion battery string and parallel plate for easy fixation and insulation of claim 4, wherein: The bus bars in the two columns of bus bars are arranged alternately, and the long direction of the strip-shaped fixing plate between the two columns of bus bars is arranged perpendicularly to the column direction of the two columns of bus bars, and both sides of the middle of the strip-shaped fixing plate are close to the ends of the corresponding bus bars in the two columns of bus bars.

7. The lithium ion battery string and parallel plate for easy fixation and insulation of claim 1, wherein: The components in the fixing assembly are all made of stainless steel.

8. The lithium ion battery string and parallel plate for easy fixation and insulation of claim 1, wherein: The mounting hole on the strip-shaped fixing plate is in interference fit or welded with the nut or the stud.

9. The lithium ion battery string and parallel plate for easy fixation and insulation of claim 1, wherein: The second insulation plate is attached to and bonded with the insulation plate.

10. The lithium ion battery string and parallel plate for easy fixation and insulation of claim 1, wherein: The displacement slot and the strip-shaped slot have the same specifications and coincide with each other.

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