CN107248634B - Electric connection device and method between electric energy storage devices - Google Patents

Abstract

The utility model provides an electric connection device between electric energy storage equipment, electric connection device is equipped with the connection tongue including connecting public head and connecting female head in connecting public head, is equipped with the connection piece in connecting female head, connects the tongue block, pastes tightly between the connection piece. The connecting tongue comprises a tongue bottom plate, a tongue end and a tongue connecting plate, one end of the tongue connecting plate is in seamless connection with the tongue end, and the other end of the tongue connecting plate is in seamless connection with the tongue bottom plate; the connecting piece is the board of bending of n shape, and the connecting piece is installed in the both sides of connecting the tongue, and the connecting piece of connecting the tongue both sides is tight with the tongue even board clamp, and the connecting piece still pushes up with the tongue end mutually, makes and connects tongue block, pastes tightly between the connecting piece. The invention can ensure that the connecting tongue and the connecting sheets keep good conductive performance, and the connecting tongue can be quickly inserted between the connecting sheets and also can be quickly pulled out, thereby improving the working efficiency.

Description

Electric connection device and method between electric energy storage devices

Technical Field

The present invention relates to an electrical connection device and a connection method, and more particularly, to an electrical connection device and a connection method between electrical energy accumulators.

Background

The working voltage between the electric energy storage devices is DC2000V, the working current is 0-900A, and the installation distance between the electric energy storage devices is only 120mm. At present, after the electric connecting device is arranged between the electric energy accumulators, the electric connecting device is difficult to plug and unplug due to the narrow operable space. And the electric energy storage devices are all electric energy memory elements, and are charged permanently once being charged, so that the electric energy storage devices are charged when the electric connection device is needed to be connected again after being pulled out. Therefore, when the electric energy storage device is connected again by the electric connecting device, if the insulation of the electric connecting device is not properly treated, certain potential safety hazards are generated. Therefore, in order to facilitate the maintenance, disassembly and assembly of the electric energy storage device in the future, the electric connection device needs to be improved.

The following patents are found to have similarities with the present invention through domestic search:

the invention discloses an in-line connector with the name of 201410659218.8, and relates to an in-line connector, which comprises a conductive metal rod and an insulating plastic protective shell, wherein one end of the insulating plastic protective shell is provided with a concave hole, the conductive metal rod is arranged in the concave hole of the insulating plastic protective shell, a circle of threads are arranged on an outer ring of an opening position of the insulating plastic protective shell, a nut is arranged on the threads, the other end of the threads supports against a stop block, and a gear structure convex block is arranged on the other side of the stop block at an interval. The direct-insertion type connector is simple in structure, good in weather resistance, extremely high-temperature resistant and good in using effect, the exterior of the direct-insertion type connector is made of polyphenyl ether plastics, and the direct-insertion type connector is convenient to use by fixing the buckle structure.

The utility model discloses an electric connector and electric connection structure with application number 201620815381.3, entitled "electric connector and electric connection structure". An electric connector comprises a female connector seat and a male connector head connected with external equipment, wherein the female connector seat is detachably connected with the male connector head; the female seat of connector includes female seat body and sets up the welding part of female seat body one end, be equipped with the inserting groove on the welding part. The electric connection structure comprises a circuit board and an electric connector; a bonding pad is arranged on the circuit board; the female connector base is inserted into the bonding pad through the insertion groove and welded with the bonding pad. The electric connector can increase the welding area with the circuit board, so that the welding is more reliable.

The utility model discloses a utility model relates to a photovoltaic connector, including the public head of connector and the female head of connector, the public head of connector and the female head of connector link together through the buckle mode, the public head of connector and the female outside of the junction of head of connector still overlap and establish a protective sheath for 201220500687.1, the name. The utility model discloses an improvement to the structure for the connection of connector is more reliable.

Although all be electric connector above patent, above patent does not all adopt and establishes the connection tongue in connecting public head, establishes the connection piece in connecting female to will connect tongue block, paste and realize connecting public head and the connection of connecting female with quick plug between the connection piece.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: how to install the electric connection device in the narrow and small space between the electric energy accumulator can also realize quick, safe pulling out and inserting while keeping good electric connection.

In order to solve the problems, the technical scheme provided by the invention is as follows: the utility model provides an electric connection device between electric energy storage device, electric connection device is equipped with the connection tongue including connecting public head and connecting female head in connecting public head, is equipped with the connection piece in connecting female head, connects tongue block, pastes tightly between the connection piece.

Furthermore, the connecting tongue comprises a tongue bottom plate, a tongue end and a tongue connecting plate, one end of the tongue connecting plate is in seamless connection with the tongue end, and the other end of the tongue connecting plate is in seamless connection with the tongue bottom plate; the connecting piece is the board of bending of n shape, and the connecting piece is installed in the both sides of connecting the tongue, and the connecting piece of connecting the tongue both sides is tight with the tongue even board clamp, and the connecting piece still pushes up with the tongue end mutually, makes and connects tongue block, pastes tightly between the connecting piece.

Furthermore, the longitudinal section of the tongue end comprises a bottom arc section, a middle arc section and a top closed section, the top closed section is connected with the middle arc sections on two sides of the tongue end, and each middle arc section is smoothly connected with the bottom arc section on the same side; the bottom arc section is an inward concave arc section, and the middle arc section is an outward convex arc section; the n-shaped connecting piece comprises a substrate and a bending piece, and the top end of the bending piece is rounded, so that the top end of the bending piece is tightly attached to and propped against the bottom arc section of the end of the tongue.

Further, connect public head including connecting tongue, first insulator and first connecting seat, connect the tongue bottom and be equipped with the tongue bottom plate, open the both sides of tongue bottom plate has the mounting hole, the middle part of first insulator and first connecting seat also opens the mounting hole corresponding with the mounting hole on the tongue bottom plate, pass the mounting hole on tongue bottom plate, first insulator and the first connecting seat with the bolt and can be in the same place connecting tongue, first insulator and first connecting seat are fixed.

Furthermore, a groove which is sunken downwards is arranged in the middle of the first connecting seat, and a mounting hole in the middle of the connecting seat is formed in the groove; the lower surface of the tongue bottom plate connected with the bottom of the tongue is a plane, and the upper surface of the tongue bottom plate is a circular arc surface.

Furthermore, the connecting female head comprises a connecting sheet, a second connecting seat, a second insulating seat and a sliding rod, the second insulating seat comprises an insulating base and an insulating bump, the insulating base and the insulating bump enclose a groove, and the second connecting seat comprises a boss and a base plate; the base plate is in the recess in, and all open the mounting hole on insulating lug and the base plate, the one end of slide bar is fixed in the mounting hole of insulating lug, and the other end stretches into the mounting hole of base plate, makes the second connecting seat can slide along the slide bar in the recess of second insulating seat.

Furthermore, the connecting sheet is an n-shaped bending plate and comprises a base sheet and a bending sheet, the bending angle of the n-shaped connecting sheet is 345-355 degrees, and more than 1 gap strip is arranged on the connecting sheet; the substrate is provided with mounting holes, two sides of a boss of the second connecting seat are provided with the mounting holes, bolts penetrate through the substrate and the mounting holes on the boss to fix the connecting pieces on the second connecting seat, so that the two n-shaped connecting pieces form an m-shaped connecting piece, and an interval with the width smaller than the width of the end head of the tongue connected with the tongue is arranged between the two m-shaped connecting pieces; the tongue connecting plate is clamped by the connecting plate, the longitudinal section of the tongue connecting plate is in a wedge shape matched with the shape of the connecting plate, and the taper of the tongue connecting plate is 6-16 degrees.

The electric connection method between electric energy storage devices comprises the steps of connecting the electric energy storage devices by using a male connecting head and a female connecting head, inserting a connecting tongue in the male connecting head between connecting sheets in the female connecting head, and tightly clamping and attaching the connecting tongues together by using the connecting sheets; the connecting piece that can let the connection tongue will connect in the female head when will connecting the male head and extracting separates, makes to connect male head and the separation of connecting the female head and come to realize connecting the male head and the quick plug of connecting the female head.

Furthermore, the male connecting head comprises a connecting tongue, a first insulating seat and a first connecting seat, and the female connecting head comprises a connecting sheet, a second connecting seat, a second insulating seat and a sliding rod; the first connecting seat is fixedly arranged on the first insulating seat, and the connecting tongue is fixedly arranged on the first connecting seat; a groove is formed in the second insulating seat, the second connecting seat is installed in the groove, one end of the sliding rod is fixed on the second insulating seat, and the other end of the sliding rod is movably connected with the second connecting seat, so that the second connecting seat can move along the sliding rod in the groove; the first insulating seat and the second insulating seat are made of insulating materials, and the first connecting seat, the second connecting seat, the connecting tongue and the connecting sheet are made of metal materials.

Furthermore, the connecting tongue comprises a tongue bottom plate, a tongue end and a tongue connecting plate, and the connecting piece is an n-shaped bending plate and comprises a substrate and a bending piece; setting the bending angle of the n-shaped connecting pieces to be 345-355 degrees, fixing one ends of the two n-shaped connecting pieces on two sides of a boss of the second connecting seat to form m-shaped connecting pieces, and arranging a space between the two connecting pieces, wherein the longitudinal section of the space is in a wedge shape; setting the longitudinal section of the tongue connecting plate into a wedge shape matched with the interval shape between the connecting sheets, and setting the taper of the tongue connecting plate to be 6-16 degrees; when the male connecting head is inserted into the female connecting head, the tongue connecting plate can be tightly clamped and attached between the connecting sheets in an interference fit manner; the longitudinal section of the tongue end is set to be a section comprising a bottom arc section, a middle arc section and a top closed section, the top closed section is connected with the middle arc sections on two sides of the tongue end, and each middle arc section is smoothly connected with the bottom arc section on the same side; the bottom arc section is set to be an inward concave arc section, and the middle arc section is set to be an outward convex arc section; the top end of the n-shaped connecting piece is chamfered, so that the top end of the bending piece is tightly attached to and abutted against the bottom arc section of the end head of the tongue; thereby realize connecting tongue and the inseparable laminating and the quick plug of connection piece.

The invention has the advantages that:

1. one end of the connecting piece is fixed on two sides of the boss of the second connecting seat, the connecting piece is an n-shaped bending plate, the bending angle of the n-shaped connecting piece ranges from 345 degrees to 355 degrees, the longitudinal section of the tongue connecting plate is in a wedge shape matched with the shape of the connecting piece, the taper of the tongue connecting plate ranges from 6 degrees to 16 degrees, when the connecting tongue is inserted between the connecting pieces, the connecting tongue can be tightly attached to the connecting pieces on two sides, the connecting tongue is not easy to loosen, the contact surface between the connecting tongue and the connecting piece is large, and the connecting tongue and the connecting piece can keep good conductive performance.

2. Both sides and the bottom of connecting the tongue all constitute by smooth circular arc section, and the top of connection piece has also carried out the radius angle, and the width of bottom circular arc section and top closed section is less than the width of middle part circular arc section, consequently connects the tongue and can swiftly insert between the connection piece, also can swiftly extract.

3. PT100 conductive grease can be coated on the connecting tongue and the connecting piece, so that the lubricating effect can be achieved, and the male head and the female head can be connected and disconnected more quickly and labor-saving; after PT100 conductive grease is coated, better fit can be formed between the connecting tongue and the connecting sheet, and the conductivity can be further enhanced.

4. Because the electric energy storage devices are all electric energy memory elements, the electric energy storage devices can still be electrified even after being disconnected, and the electric connecting device is electrically connected with the electric energy storage devices, namely, even after the male connecting head is detached from the female connecting head, the metal part of the male connecting head connected with the female connecting head is still electrified. Therefore, the first insulating seat and the second insulating seat are made to be larger in size, and on one hand, the first connecting seat, the second connecting seat, the connecting tongue and the connecting sheet can be installed more firmly; on the other hand, the insulation area of the electric connection device can be increased, so that a large enough safe operation area can be provided when the electric connection device is checked, maintained and used, and safety accidents are reduced as much as possible.

5. Each part in the electric connecting device is designed in a detachable mode, so that the part can be conveniently replaced, high maintenance cost caused by replacing the whole electric connecting device can be avoided, and the product maintenance cost is indirectly reduced. In addition, all the parts are arranged to be detachable, so that the difficulty of manufacturing the parts can be reduced, and the method is more suitable for batch production.

6. The first insulating seat is arranged on the surface A of the electric energy storage device, the second insulating seat is arranged on the surface B of the electric energy storage device, and the surface A of the electric energy storage device is inserted into the surface B of the other electric energy storage device, so that the serial connection between the electric energy storage device and the electric energy storage device is realized. Therefore, the position matching between the connecting tongue on the connecting male head and the connecting sheet on the connecting female head is not very accurate sometimes, and the structure that the second connecting seat can move along the sliding rod in the groove is arranged, so that the technical problem is solved.

Drawings

FIG. 1 is a perspective view of the first embodiment;

FIG. 2 is a perspective view of the male connection end;

FIG. 3 is a perspective view of the first insulating base;

FIG. 4 is a perspective view of the first connecting base;

FIG. 5 is a perspective view of the connection tongue;

FIG. 6 is a partial schematic view of region A of FIG. 5;

FIG. 7 is a perspective view of the female connector;

FIG. 8 is a perspective view of a second insulating base;

FIG. 9 is a perspective view of the second connecting seat;

FIG. 10 is a perspective view of an individual connecting piece;

in the figure: 1 first insulating seat, 2 first connecting seats, 3 connection tongues, 31 tongue bottom plates, 32 tongue ends, 321 bottom circular arc sections, 322 middle circular arc sections, 323 top closed sections, 33 tongue connecting plates, 4 connecting plates, 41 substrates, 42 bending sheets, 43 gap strips, 5 second connecting seats, 51 bosses, 511 arc grooves, 52 substrates, 6 second insulating seats, 61 insulating bases, 62 insulating lugs, 7 sliding rods and 8 mounting holes.

Detailed Description

The invention is described in one step with reference to the following examples and figures:

example one

As shown in fig. 1, 2 and 7, the electrical connection device includes a male connection head and a female connection head, and the male connection head includes a connection tongue 3, a first insulation seat 1 and a first connection seat 2. The connecting tongue 3 and the first connecting seat 2 are mounted on the first insulating seat 1 through bolts. The female connection head comprises a connection piece 4, a second connection seat 5, a second insulation seat 6 and a slide rod 7, the second connection seat 5 is installed in a groove of the second insulation seat 6 through the slide rod 7, and the connection piece 4 is installed and fixed on two sides of a boss 51 in the middle of the second connection seat 5.

As shown in fig. 1 to 6, a tongue bottom plate 31 is disposed at the bottom of the connecting tongue 3, mounting holes 8 are formed on two sides of the tongue bottom plate 31, a recess recessed downward is formed in the middle of the first connecting seat 2, the mounting hole 8 in the middle of the connecting seat is formed in the recess, and the mounting hole 8 is also formed in the middle of the first insulating seat 1. The connection tongue 3, the first insulating seat 1 and the first connecting seat 2 can be fixed together by penetrating the tongue bottom plate 31, the first insulating seat 1 and the mounting hole 8 on the first connecting seat 2 through bolts, and the tongue bottom plate 31 is embedded in the groove in the middle of the first connecting seat 2 at the moment. The lower surface of the tongue bottom plate 31 connected with the bottom of the tongue 3 is a plane, and the upper surface of the tongue bottom plate 31 is a circular arc surface.

Connect tongue 3 and include tongue bottom plate 31, tongue end 32 and tongue even board 33, the tongue even one end of board 33 and tongue end 32 seamless connection, the tongue even other end and tongue bottom plate 31 seamless connection of board 33. The longitudinal section of the tongue tip 32 includes a bottom arc 321, a middle arc 322 and a top closed section 323, the top closed section 323 is connected with the middle arc 322 on both sides of the tongue tip 32, and each middle arc 322 forms a smooth connection with the bottom arc 321 on the same side. The bottom arc segment 321 is an inwardly concave arc segment, and the middle arc segment 322 is an outwardly convex arc segment. In this embodiment, the top closed section 323 is also arc-shaped, and the top closed section 323 and the middle arc section 322 form a smooth connection, so that the width of the two ends of the tongue tip 32 is smaller than the width of the middle part.

As shown in fig. 1 and fig. 7 to 10, the second insulating base 6 includes an insulating base 61 and an insulating protrusion 62, and the insulating base 61 and the insulating protrusion 62 define a groove. The second connecting seat 5 comprises a boss 51 and a base plate 52, the base plate 52 is arranged in the groove, the insulating projection 62 and the base plate 52 are both provided with mounting holes 8, one end of the sliding rod 7 is fixed in the mounting hole 8 of the insulating projection 62, and the other end of the sliding rod extends into the mounting hole 8 of the base plate 52, so that the second connecting seat 5 can slide along the sliding rod 7 in the groove of the second insulating seat 6. In this embodiment, the sliding rod 7 is a smooth rod without threads, the outer diameter of the sliding rod 7 is slightly larger than the inner diameter of the mounting hole 8 of the insulation bump 62, and the sliding rod 7 is mounted in the insulation bump 62 through interference fit. But the outer diameter of the sliding rod 7 is slightly smaller than the inner diameter of the mounting hole 8 of the second connecting seat 5, so that the second connecting seat 5 can slide along the sliding rod 7 in the groove of the second insulating seat 6.

The single connecting piece 4 is n-shaped, the n-shaped connecting piece 4 comprises a substrate 41 and a bending piece 42, and the two connecting pieces 4 are symmetrically arranged at two sides of a boss 51 of the second connecting seat 5 to form the m-shaped connecting piece 4. A certain interval is arranged between the two m-shaped connecting pieces 4, and the connecting tongue 3 is inserted between the m-shaped connecting pieces 4 from the interval. Because the connection between tongue end 32 bottom circular arc section 321, middle part circular arc section 322 and the closed section 323 in top all is smooth connection, bottom circular arc section 321 is inside sunken, and the circular arc section of middle part circular arc section 322 and the closed section 323 in top is outside protrusion, and the width at the two of tongue end 32 is less than the width at middle part, and the interval width between two connecting pieces 4 of m shape also is less than the width at tongue end 32 middle part. Therefore, when the connecting tongue 3 is inserted between the two m-shaped connecting pieces 4, the middle part of the tongue end 32 can extrude the two m-shaped connecting pieces 4 to both sides, so that the connecting tongue 3 can rapidly enter. When the tongue end 32 is inserted between the connecting pieces 4 and the tongue end 32 exceeds the top end of the connecting piece 4, the two connecting pieces 4 which are extruded are quickly folded towards the middle because the arc-shaped section 321 at the bottom of the tongue end 32 is concave inwards, and the connecting tongue 3 is flapped to emit crisp metal collision sound to prompt a worker to install the tongue in place.

As shown in fig. 1 to 10, the connecting sheet 4 is an n-shaped bent plate, and includes a base sheet 41 and a bent sheet 42; the bending angle of the n-shaped connecting pieces 4 is set to be 345-355 degrees, one ends of the two n-shaped connecting pieces 4 are fixed on two sides of the boss 51 of the second connecting seat 5 to form m-shaped connecting pieces 4, an interval is arranged between the two connecting pieces 4, and the longitudinal section of the interval is in a wedge shape; the longitudinal section of the tongue connecting plate 33 is set to be wedge-shaped matched with the interval shape between the connecting sheets 4, and the taper of the tongue connecting plate 33 is set to be 6-16 degrees; when the male connecting head is inserted into the female connecting head, the tongue connecting plate 33 can be clamped and attached between the connecting sheets 4 through interference fit. Because the connecting tongue 3 and the connecting piece 4 are both flat, the contact area and the clamping force of the connecting tongue 3 and the connecting piece 4 can be increased by extending the length of the connecting tongue 3 and the connecting piece, and therefore, the connecting tongue 3 and the connecting piece 4 have very good electric conductivity when being connected together. In addition, in the embodiment, in order to further enhance the fitting degree between the connection tongue 3 and the connection sheet 4, PT100 conductive grease is coated on the connection tongue 3 and the connection sheet 4, so that the conductivity is further enhanced.

The longitudinal section of the tongue tip 32 is set to be a section comprising a bottom arc section 321, a middle arc section 322 and a top closed section 323, the top closed section 323 is connected with the middle arc sections 322 on both sides of the tongue tip 32, and each middle arc section 322 is smoothly connected with the bottom arc section 321 on the same side; the bottom arc segment 321 is set as an inward concave arc segment, and the middle arc segment 322 is set as an outward convex arc segment. And carry out the fillet with the top of the connection piece 4 of n shape for the top of bending piece 42 pastes closely and pushes up with the bottom circular arc section 321 of tongue end 32 mutually, so when will connecting tongue 3 and extract from between two connection pieces 4 of m shape, can let to connect tongue 3 very smooth crowded the connection piece 4 of both sides open, thereby the quick tongue 3 that will connect extracts. For further accelerating to connect tongue 3 and follow and extract between connection piece 4, adopt and to scribble PT100 conductive grease on connecting tongue 3 and connection piece 4 to further strengthen the lubrication action between connecting tongue 3 and the connection piece 4, thereby faster will connect tongue 3 and the pull out of connection piece 4 not damaged.

In this embodiment, in order to prevent the male connector from being inserted into the female connector and being forcefully too hard to damage the electrical connection device, an inwardly recessed arc-shaped groove 511 is formed in the middle of the boss 51 of the second connector holder 5, and the shape of the arc-shaped groove 511 is matched with the shape of the top closed section 323 of the tongue tip 32. The upper surface of the tongue bottom plate 31 connected with the tongue 3 is provided with an arc surface, and the shape of the upper surface of the tongue bottom plate 31 is matched with the shape of the bending part of the n-shaped connecting plate 4. When the connecting tongue 3 is just installed in place, the tongue end 32 has a certain distance with the arc-shaped groove 511 in the middle of the boss 51, and the upper surface of the tongue bottom plate 31 also has a certain distance with the bending part of the n-shaped connecting piece 4. And the distance between the upper surface of the tongue bottom plate 31 and the bending part of the connecting sheet 4 is slightly smaller than the distance between the tongue end 32 and the arc-shaped groove 511. Therefore, when the relative movement amplitude of the male connection head and the female connection head is too large due to too strong force, the bent part of the connecting sheet 4 can collide with the arc surface of the upper surface of the tongue bottom plate 31, and the connecting sheet 4 is an elastic part, so that the collision can be well buffered. If the male connecting head and the female connecting head have violent impact due to some accidents, the connecting sheet 4 can be bent in a small radian to greatly buffer the impact, the tongue end head 32 of the connecting tongue 3 can be propped against the arc-shaped groove 511 in the middle of the boss 51, and the impact with higher strength can be buffered.

The present invention is not limited to the first embodiment, for example: the top closed section 323 of the tongue tip 32 is designed to be straight-line or wavy; or the n-shaped connecting piece 4 is manufactured into a complete bending piece 42 without adopting a gap strip 43 on the connecting piece 4; or only one connecting sheet 4 on one side of the boss 51 in the first embodiment is changed into a plurality of connecting sheets 4; or the slide bar 7 is changed from a whole polished rod type to a thread used at the rear end of the polished rod at the front end, and the thread at the rear end is matched with the mounting hole 8 in the second insulating seat 6 by threads to realize that the slide bar 7 is fixed in the mounting hole 8 in the second insulating seat 6; or the flat upper surface of the tongue base may be made flat, etc. are alternatives to the present invention.

It will be apparent that modifications and variations are possible without departing from the principles of the invention as set forth herein.

Claims (7)

1. An electric connection device between electric energy storage devices is characterized in that the electric connection device comprises a male connection head and a female connection head, a connection tongue (3) is arranged in the male connection head, a connection sheet (4) is arranged in the female connection head, and the connection tongue (3) is clamped and tightly attached between the connection sheets (4); the connecting tongue (3) comprises a tongue bottom plate (31), a tongue end head (32) and a tongue connecting plate (33), one end of the tongue connecting plate (33) is in seamless connection with the tongue end head (32), and the other end of the tongue connecting plate (33) is in seamless connection with the tongue bottom plate (31); the connecting piece (4) is an n-shaped bent plate, the connecting piece (4) is arranged on two sides of the connecting tongue (3), the connecting piece (4) on two sides of the connecting tongue (3) clamps the tongue connecting plate (33), and the connecting piece (4) is also propped against the tongue end (32), so that the connecting tongue (3) is clamped and tightly attached between the connecting pieces (4); the longitudinal section of the tongue end head (32) comprises a bottom arc section (321), a middle arc section (322) and a top closed section (323), the top closed section (323) is connected with the middle arc sections (322) on two sides of the tongue end head (32), and each middle arc section (322) is smoothly connected with the bottom arc section (321) on the same side; the bottom arc section (321) is an inward concave arc section, and the middle arc section (322) is an outward convex arc section; the n-shaped connecting piece (4) comprises a base piece (41) and a bending piece (42), wherein the top end of the bending piece (42) is rounded, so that the top end of the bending piece (42) is tightly attached to and abutted against the bottom arc section (321) of the tongue end (32).

2. The electric connection device between electric energy storage devices of claim 1, characterized in that, connect public head including connecting tongue (3), first insulator (1) and first connector (2), connect tongue (3) bottom and be equipped with tongue bottom plate (31), mounting hole (8) have been opened to the both sides of tongue bottom plate (31), the middle part of first insulator (1) and first connector (2) also has been opened mounting hole (8) corresponding with mounting hole (8) on tongue bottom plate (31), pass mounting hole (8) on tongue bottom plate (31), first insulator (1) and first connector (2) with the bolt and can be in the same place with connecting tongue (3), first insulator (1) and first connector (2) are fixed.

3. An electrical connection between electrical energy storage devices as claimed in claim 2, characterized in that the first connecting socket (2) is provided with a recess in the middle thereof, in which recess the mounting hole (8) in the middle of the connecting socket is provided; the lower surface of a tongue bottom plate (31) connected with the bottom of the tongue (3) is a plane, and the upper surface of the tongue bottom plate (31) is an arc surface.

4. An electrical connection device between electrical energy storage devices according to claim 1, wherein the female connection head comprises a connection plate (4), a second connection seat (5), a second insulation seat (6) and a sliding rod (7), the second insulation seat (6) comprises an insulation base (61) and an insulation projection (62), the insulation base (61) and the insulation projection (62) enclose a groove, and the second connection seat (5) comprises a boss (51) and a base plate (52); the base plate (52) is arranged in the groove, mounting holes (8) are formed in the insulating convex block (62) and the base plate (52), one end of the sliding rod (7) is fixed in the mounting hole (8) of the insulating convex block (62), the other end of the sliding rod extends into the mounting hole (8) of the base plate (52), and the second connecting seat (5) can slide along the sliding rod (7) in the groove of the second insulating seat (6).

5. The electrical connection device between the electrical energy storage devices of claim 4, characterized in that the connecting sheet (4) is an n-shaped bent plate, which comprises a base sheet (41) and a bent sheet (42), the bent angle of the n-shaped connecting sheet (4) is 345-355 degrees, and more than 1 gap strip (43) is arranged on the connecting sheet (4); the base plate (41) is provided with mounting holes (8), the two sides of the boss (51) of the second connecting seat (5) are provided with the mounting holes (8), bolts penetrate through the base plate (41) and the mounting holes (8) on the boss (51) to fix the connecting pieces (4) on the second connecting seat (5), so that the two n-shaped connecting pieces (4) form m-shaped connecting pieces (4), and an interval with the width smaller than that of the tongue end head (32) of the connecting tongue (3) is arranged between the two m-shaped connecting pieces (4); the tongue connecting plate (33) is clamped by the connecting piece (4), the longitudinal section of the tongue connecting plate (33) is in a wedge shape matched with the shape of the connecting piece (4), and the taper of the tongue connecting plate (33) is 6-16 degrees.

6. The method for electrically connecting the electric energy storage devices is characterized in that the electric energy storage devices are connected by a male connecting head and a female connecting head, a connecting tongue (3) in the male connecting head is inserted between connecting sheets (4) in the female connecting head, and the connecting sheets (4) clamp and attach the connecting tongues (3) together; when the male connection head is pulled out, the connection tongue (3) can separate the connection sheet (4) in the female connection head, so that the male connection head and the female connection head are separated, and the male connection head and the female connection head can be quickly plugged and pulled out; the male connecting head comprises a connecting tongue (3), a first insulating seat (1) and a first connecting seat (2), and the female connecting head comprises a connecting sheet (4), a second connecting seat (5), a second insulating seat (6) and a sliding rod (7); the first connecting seat (2) is fixedly arranged on the first insulating seat (1), and the connecting tongue (3) is fixedly arranged on the first connecting seat (2); a groove is formed in the second insulating seat (6), the second connecting seat (5) is installed in the groove, one end of the sliding rod (7) is fixed on the second insulating seat (6), and the other end of the sliding rod (7) is movably connected with the second connecting seat (5), so that the second connecting seat (5) can move along the sliding rod (7) in the groove; wherein the first insulating seat (1) and the second insulating seat (6) are made of insulating materials, and the first connecting seat (2), the second connecting seat (5), the connecting tongue (3) and the connecting sheet (4) are made of metal materials.

7. The method for electrically connecting the electric energy storage devices according to claim 6, wherein the connecting tongue (3) comprises a tongue bottom plate (31), a tongue end (32) and a tongue connecting plate (33), and the connecting plate (4) is an n-shaped bent plate comprising a base plate (41) and a bent plate (42); setting the bending angle of the n-shaped connecting pieces (4) to be 345-355 degrees, fixing one ends of the two n-shaped connecting pieces (4) on two sides of a boss (51) of the second connecting seat (5) to form m-shaped connecting pieces (4), and arranging a space between the two connecting pieces (4), wherein the longitudinal section of the space is wedge-shaped; setting the longitudinal section of the tongue connecting plate (33) to be wedge-shaped matched with the interval shape between the connecting plates (4), and setting the taper of the tongue connecting plate (33) to be 6-16 degrees; when the male connecting head is inserted into the female connecting head, the tongue connecting plate (33) can be clamped and attached between the connecting sheets (4) through interference fit; the longitudinal section of the tongue end head (32) is set to be a section comprising a bottom arc section (321), a middle arc section (322) and a top closed section (323), the top closed section (323) is connected with the middle arc sections (322) on two sides of the tongue end head (32), and each middle arc section (322) is smoothly connected with the bottom arc section (321) on the same side; the bottom arc section (321) is a concave arc section towards the inner side, and the middle arc section (322) is a convex arc section towards the outer side; the top end of the n-shaped connecting piece (4) is rounded, so that the top end of the bending piece (42) is tightly attached to and abutted against the bottom arc section (321) of the tongue tip (32); thereby realizing the close fit and the rapid plugging of the connecting tongue (3) and the connecting sheet (4).

Images