Novel series-parallel connection board

Abstract

A novel series-parallel connection plate comprises a first insulating plate and busbars, the busbars are riveted to the upper surface of the first insulating plate through rivets, receding gaps for tabs to penetrate through are reserved between the adjacent busbars, the lower surface of the first insulating plate is fixedly connected with a second insulating plate, and the second insulating plate covers the lower ends of the rivets; weight reduction through grooves are formed in the positions, corresponding to the receding gaps, of the first insulating plate, supporting strips are formed between the adjacent weight reduction through grooves, the busbars and the corresponding supporting strips are arranged in a stacked mode, and receding through grooves used for allowing tabs to penetrate through are formed in the positions, corresponding to the two opposite sides of the busbars, of the second insulating plate; the two layers of insulating plates are overlapped, so that the short circuit of the busbar through rivets is avoided, and the structural strength of the busbar can be improved; and the insulating plate connected with the busbar is provided with the weight-reducing through groove, so that the overall weight of the power distribution box is reduced while the structural strength is considered, and the power distribution box can be used by various unmanned aerial vehicles.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery series and parallel connection board, concretely relates to a novel series and parallel connection board. BACKGROUND

[0002] At present, a plurality of busbars are fixedly connected on the insulating plate to form a series and parallel connection board, and the series and parallel connection of the battery pack is realized through the series and parallel connection board. In a kind of pad lithium ion battery series and parallel connection board with gasket disclosed in CN219163633U, stainless steel sheet gasket is arranged on the lower surface of busbar, which improves the structural strength of busbar;In a kind of battery series and parallel connection board with heat dissipation function disclosed in CN219419403U, tooth for improving heat dissipation area is integrated around busbar, thereby improving the self-heat dissipation capacity of busbar;These series and parallel connection boards are well applied in electric vehicles;However, it is not very practical on some unmanned aerial vehicles, one is that the strength of insulating plate is poor, and two is that after busbar is riveted on insulating plate by rivet, rivet arranged on the back surface of insulating plate is easy to cause battery short circuit. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides a novel series and parallel connection board, which aims to adapt the series and parallel connection board to unmanned aerial vehicles flying in harsh environment.

[0004] A kind of novel series and parallel connection board, including first insulating plate and busbar, busbar is attached and riveted on the upper surface of first insulating plate, rivet for riveting penetrates busbar and first insulating plate, leaving gap for tab between adjacent busbars, second insulating plate is fixedly connected on the lower surface of first insulating plate, second insulating plate is attached with first insulating plate, so that the lower end of rivet is covered by second insulating plate;Weight reduction slot is set on the position corresponding to gap on first insulating plate, support strip is formed between adjacent weight reduction slots, busbar and corresponding support strip are stacked, and let go slot for tab is set on the position corresponding to opposite sides of busbar on second insulating plate.

[0005] Further, the lower end of rivet is flush with the lower surface of first insulating plate.

[0006] Further, the lower end of rivet protrudes outside the lower surface of first insulating plate, and let go blind hole is set on the position corresponding to rivet on first insulating plate, and the lower end of rivet is accommodated in corresponding let go blind hole.

[0007] Further, the weight reduction slot is of mouth-shaped structure, and one or two weight reduction slots are arranged between adjacent busbars.

[0008] Further, the weight reduction slot is of triangular structure, and a plurality of weight reduction slots are arranged between adjacent busbars.

[0009] Further, the weight-reducing through slot is in the shape of an open U, and the opening of the weight-reducing through slot is located on the side of the first insulating plate, so that the first insulating plate is in the shape of a fishbone.

[0010] Further, the first insulating plate and the second insulating plate are bonded or connected in a composite manner, so that the first insulating plate and the second insulating plate are connected in a sealed manner.

[0011] Further, the connecting portion is integrally connected between the two strip-shaped bus bars and forms a U-shaped or an open U-shaped special-shaped bus bar.

[0012] Further, the connecting portion is integrally connected between the two strip-shaped bus bars and forms a U-shaped or an open U-shaped special-shaped bus bar.

[0013] Further, the connecting portion is integrally connected between the two strip-shaped bus bars and forms a U-shaped or an open U-shaped special-shaped bus bar.

[0014] The utility model discloses the beneficial effects that: through two layers of insulating plates are superimposed, avoid the short circuit of bus bar through rivet, can increase the structural strength of the utility model at the same time, and the weight-reducing through slot is arranged on the insulating plate connected with the bus bar, so that the structural strength is considered, and the weight of the utility model is reduced, so that the utility model can satisfy the use of various unmanned planes. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0017] Figure 3 It is Figure 2 It is the enlarged structure diagram of area A;

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

[0019] Figure 5 It is the structure schematic diagram of the second insulating plate in the first embodiment of the utility model;

[0020] Figure 6 It is the structure schematic diagram of the first insulating plate of the second kind in the first embodiment of the utility model;

[0021] Figure 7 It is the structure schematic diagram of the first insulating plate in the third embodiment of the utility model;

[0022] Figure 8 It is the structure schematic diagram of the first insulating plate in the fourth embodiment of the utility model;

[0023] Figure 9It is another structure schematic view of the second insulating plate in the fifth embodiment of the utility model;

[0024] Figure 10 It is the overhead structure schematic view of the fifth embodiment of the utility model;

[0025] Figure 11 It is the structure schematic view of the first busbar in the utility model;

[0026] Figure 12 It is the structure schematic view of the second busbar in the utility model. DETAILED DESCRIPTION

[0027] The utility model will be described in detail below in combination with 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 signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring 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 used as the reference of the normal use state of the product, and should not be considered as a limitation.

[0028] First embodiment:

[0029] A novel series-parallel connection plate is combined with Figure 1 , Figure 2 and Figure 3As shown, it includes a first insulating plate 3 and a busbar 1. The busbar 1 is attached to and riveted on the upper surface of the first insulating plate 3. Fourteen busbars 1 are distributed in a 2×7 array. The rivets 2 used for riveting penetrate the busbar 1 and the first insulating plate 3. The busbar 1 and the first insulating plate 3 are generally fixedly connected by two rivets 2. A clearance is left between adjacent busbars 1 for the tabs to pass through. A second insulating plate 4 is fixedly connected to the lower surface of the first insulating plate 3. The first insulating plate 3 and the second insulating plate 4 are made of the same material and are both PCB boards. The second insulating plate 4 is attached to the first insulating plate 3 so that the second insulating plate 4 covers the lower end of the rivet 2. The lower end of the rivet 2 is flush with the lower surface of the first insulating plate 3, so that the second insulating plate 4 can be directly connected to the first insulating plate 3 fits well, which requires increasing the pressure on the rivet 2 when riveting the first insulating plate 3 and the bus 1, so there are certain requirements for the thickness of the first insulating plate 3; therefore, the use of a double-layer insulating plate for compounding can increase the structural strength of the utility model, and at the same time, the second insulating plate 4 covers the rivet 2 to avoid a short circuit of the bus 1 due to the rivet 2; however, after adding the second insulating plate 4, the total weight of the series-parallel plate will increase, and the heavy series-parallel plate will directly affect the endurance of the drone, so it is necessary to reduce the weight of this embodiment and take into account the overall structural strength of this embodiment; a weight-reducing through groove 31 is opened on the first insulating plate 3 at a position corresponding to the clearance, and a support bar is formed between adjacent weight-reducing through grooves 31, and the bus 1 and the corresponding support bar are stacked, combined Figure 5 As shown, on the second insulating plate 4 , corresponding to the positions on the two opposite sides of the busbar 1 , there are provided through slots 41 for passing the tabs.

[0030] Among them, combined Figure 4 and Figure 6 As shown, the weight-reducing slots 31 are of a square-shaped structure. One or two weight-reducing slots 31 are provided between adjacent busbars 1, making the first insulating plate 3 easy to process and having a stable structure. The first insulating plate 3 and the second insulating plate 4 are preferably bonded or compositely connected, so that the first insulating plate 3 and the second insulating plate 4 are sealed and prevent moist air or liquid from entering between the first insulating plate 3 and the second insulating plate 4. The first insulating plate 3 and the second insulating plate 4 can also be fixed together by bolts, pins, rivets, expansion bolts, etc., but this will increase the weight of this embodiment and require the conductive mechanical connection components to avoid the busbars.

[0031] In addition, the busbar 1 is generally a strip structure, which is suitable for the series and parallel connection of the drone battery pack. Figure 1 、 Figure 10 、 Figure 11 and Figure 12As shown, the two strip-shaped bus bars 1 are integrally connected with the connecting part 11 and form a U-shaped or mouth-shaped special-shaped row; the special-shaped row increases the structural strength of the whole embodiment to a certain extent; in order to facilitate heat dissipation, the connecting part 11 is wholly or partially covered on the weight-reducing through groove 31, so that the connecting part 11 is suspended, thereby facilitating heat dissipation of the bus bar 1 through the connecting part 11.

[0032] In use, the utility model is placed on the battery pack, and the bus bar is located above the first insulating plate; then, the tab of the battery piece in the battery pack is penetrated through the corresponding accommodation through groove and is folded and covered on the corresponding bus bar, the tab on the bus bar is fixedly welded, so that the series and parallel connection of the battery pack is completed.

[0033] Second embodiment:

[0034] In the case of being the same as the first embodiment, the lower end of the rivet is protrudingly arranged outside the lower surface of the first insulating plate (not shown in the figure), so that the thickness of the first insulating plate is reduced, and the pressure on the rivet during riveting is reduced, thereby the weight and cost can be reduced; the accommodation blind hole (not shown in the figure) is arranged on the first insulating plate at the position corresponding to the rivet, and the lower end of the rivet is accommodated in the corresponding accommodation blind hole, so that the second insulating plate and the first insulating plate are attached.

[0035] Third embodiment:

[0036] In the case of being the same as the first embodiment or the second embodiment, as shown in Figure 7 The weight-reducing through groove 31 is a triangular structure, the side corresponding to the tab on the supporting strip is arranged in parallel with the side of the corresponding triangular structure, so that the tab is conveniently penetrated in the weight-reducing through groove 31, and a plurality of weight-reducing through grooves 31 are arranged between the adjacent bus bars 1, so that the structural strength of the first insulating plate 3 is increased.

[0037] Fourth embodiment:

[0038] In the case of being the same as the first embodiment or the second embodiment, as shown in Figure 8 The weight-reducing through groove 31 is a U-shaped open structure, and the opening of the weight-reducing through groove 31 is located on the side of the first insulating plate 3, so that the first insulating plate 3 forms a fishbone shape, and the weight of the first insulating plate 3 can be reduced to the maximum extent.

[0039] Fifth embodiment:

[0040] In the case of being the same as other embodiments, in combination with Figure 9 As shown, the accommodation through groove 41 and the weight-reducing through groove 31 are corresponding and have the same specification, so that the overall weight of the utility model is further reduced.

[0041] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A novel series-parallel plate comprising a first insulating plate and bus bars, the bus bars being attached and riveted to the upper surface of the first insulating plate, a rivet for riveting passing through the bus bars and the first insulating plate, and a gap for allowing a tab to pass being left between adjacent bus bars, characterized in that: The second insulating plate is fixedly connected to the lower surface of the first insulating plate and is attached to the first insulating plate, so that the second insulating plate covers the lower end of the rivet; the first insulating plate is provided with a weight-reducing groove at a position corresponding to the clearance, and a support strip is formed between adjacent weight-reducing grooves; the bus bars are arranged in layers with the corresponding support strips; and the second insulating plate is provided with a clearance groove for passing the tabs at positions corresponding to the opposite sides of the bus bars. ​ 2. The novel series-parallel plate according to claim 1, characterized by: The lower end of the rivet is flush with the lower surface of the first insulating plate.

3. The novel series-parallel plate according to claim 1, characterized by: The lower end of the rivet protrudes outward from the lower surface of the first insulating plate, and the first insulating plate is provided with a clearance blind hole at a position corresponding to the rivet; the lower end of the rivet is accommodated in the corresponding clearance blind hole.

4. The novel series-parallel plate according to claim 1, characterized by: The weight-reducing groove has a mouth-shaped structure, and one or two weight-reducing grooves are arranged between adjacent bus bars.

5. The novel series-parallel plate according to claim 1, characterized by: The weight-reducing groove has a triangular structure, and a plurality of weight-reducing grooves are arranged between adjacent bus bars.

6. The novel series-parallel plate according to claim 1, characterized by: The weight-reducing groove has a U-shaped open structure, and the opening of the weight-reducing groove is located on the side edge of the first insulating plate, so that the first insulating plate has a fishbone shape.

7. The novel series-parallel plate according to claim 1, characterized by: The first insulating plate and the second insulating plate are bonded or composite connected, so that the first insulating plate and the second insulating plate are sealingly connected.

8. The novel series-parallel plate according to claim 1, characterized by: The two strip-shaped bus bars are integrally connected with a connecting portion and form a U-shaped or mouth-shaped special-shaped row.

9. The novel series-parallel plate according to claim 8, characterized by: The connecting portion is entirely or partially covered on the weight-reducing groove.

10. The novel series-parallel plate according to claim 1, characterized by: The clearance groove and the weight-reducing groove are corresponding and have the same specifications.

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