CN216850232U - Connection structure for series connection of high-capacity single batteries - Google Patents

Abstract

The utility model belongs to the technical field of the battery, concretely relates to connection structure of large capacity battery cell series, set up anodal mass flow post and negative pole mass flow post in battery cell's both sides promptly, and a battery cell's anodal mass flow post passes through coupling assembling series connection with adjacent battery cell's negative pole mass flow post, it steps up to set up anchor clamps through two corresponding recesses on adjacent battery, can make a plurality of large capacity batteries establish ties each other through a plurality of anchor clamps and recess messenger, through the wire connection between large capacity battery cell has been saved to this kind of tandem system's one side, the material has been saved, on the other hand is great with the anodal mass flow post lug connection area between two batteries, the line that has reduced between the battery generates heat.

Description

Connection structure for series connection of high-capacity single batteries

Technical Field

The utility model relates to a battery field especially relates to a large capacity lithium ion battery cell's connected mode.

Background

The high-capacity lithium battery is one of the developing directions of the lithium battery, and can be applied to the fields of energy storage and power batteries. Because large capacity battery cell's voltage is lower, but its electric current is very big, adopt the mode of a plurality of battery cell series connection to use when in actual use, but present series connection mode is usually to pass through the wire with battery cell's positive pole and negative pole and is connected, carry out fastening connection through the connecting piece to a plurality of battery cell simultaneously and protect, it leads to the series connection unstability to avoid a plurality of battery cell to rock each other, but this often can make the sectional area of connecting piece great, occupation usage space and increase use cost, and the popularization is reduced.

For example, patent CN 111341985 a discloses a battery system, in which a plurality of batteries are connected in series through a battery cover plate, the battery cover plate includes a negative internal leading terminal, an end plate and a positive internal leading terminal, which are electrically connected in sequence, and the negative internal leading terminal and the positive internal leading terminal are connected with the end plate by welding, riveting or directly connecting together by using an injection molding piece. The flexible assembly and disassembly cannot be realized after the welding convergence riveting or injection molding part is connected into an integral structure, the flexibility is poor, and the use is limited.

Also there is disclosed a lithium cell group of establishing ties fast like CN209729981U, and it is mainly that the activity is pegged graft between each lithium cell has the backing plate, and the backing plate right-hand member of right-hand member has first screw rod through the bearing grafting, first screw rod runs through the screw thread and pegs graft at the right side wall of device casing, and the upper end left side of device casing has the apron through being connected with the axle, and threaded spliced eye has all been opened to the side around the inner chamber of apron, and threaded spliced eye's inside has all been pegged graft through the screw thread and has been had the second screw rod, rolling bearing has been cup jointed to impartial distance on the second screw rod, rolling bearing's lower extreme fixedly connected with connecting rod. The series connection of the batteries is completed through the matching of the first screw rod, the second screw rod and the contact rod, but the series connection of the batteries has the problems that the installation is difficult, the contact rod is inserted and aligned, and the installation efficiency is influenced.

Therefore, a connection method capable of rapidly and efficiently completing the series connection of the battery packs is needed, so as to realize the safe and stable series connection of the large-capacity batteries.

SUMMERY OF THE UTILITY MODEL

In order to solve the connection problem when large capacity battery cell uses in groups, this application discloses a connection structure that large capacity battery cell established ties, the technical scheme that this application adopted as follows:

the utility model provides a connection structure that large capacity battery cell established ties, sets up anodal mass flow post and negative pole mass flow post in battery cell's both sides, and the anodal mass flow post of a battery cell passes through coupling assembling series connection with the negative pole mass flow post of an adjacent battery cell, realizes battery cell's large capacity combination.

Further inject, set up recess or/and through-hole on positive pole current concentration post and the negative pole current concentration post, coupling assembling's one end extends to in a battery cell's recess or/and through-hole, and the other end extends to the recess or/and through-hole that adjacent battery cell corresponds, utilizes simple connection structure such as recess or through-hole to accomplish the series connection.

Further inject, coupling assembling includes the clamping jig, the clamping jig is U type structure, the both sides arm end of clamping jig extends to respectively and presss from both sides two adjacent battery cells in the anodal current-collecting column and the negative pole current-collecting column that two adjacent battery cells correspond.

Further inject, clamping jig is strip U type anchor clamps, be provided with the bar recess that matches with clamping jig on the anodal current collecting post of battery cell and the negative pole current collecting post, two arms of clamping jig utilize simple U type structure to realize two battery cell's series connection, convenient operation in extending to the bar recess of anodal current collecting post and the negative pole current collecting post that two adjacent battery cells correspond.

Further limiting, the clamping fixture further comprises a first L-shaped arm, a second L-shaped arm, a fixed pin shaft and a fastening bolt, wherein the fixed pin shaft is arranged at the turning position of the second L-shaped arm, and the first L-shaped arm is hinged with the second L-shaped arm through the fixed pin shaft; the short arm of the first L-shaped arm and the short arm of the second L-shaped arm are arranged in a stacked mode and connected through the fastening bolt, the whole clamping fixture can be tightened up through tightening of the fastening bolt, operation is simple, and the clamping effect is good.

Further inject, coupling assembling still includes connecting screw and coupling nut, connecting screw one end is arranged in the recess on the anodal mass flow post of battery cell, and connecting screw's the other end extends to in the recess that adjacent battery cell negative pole mass flow post corresponds, connecting screw's both ends are fastened through the nut that is located the battery cell recess respectively, utilize simple standard connecting piece can accomplish the series connection of battery.

The connecting assembly comprises a locking screw, a locking nut and a connecting clamp, and two ends of the connecting clamp respectively extend into the positive current collecting column and the negative current collecting column corresponding to the two adjacent single batteries; the locking screw rod extends to the other side end from one side end of the connecting clamp, the locking nuts are arranged at two ends of the locking screw rod and located on the outer side of the connecting clamp, the two single batteries are combined through the connecting clamp, and the locking screw rod and the locking nuts are reinforced again, so that the clamping effect of the connecting clamp is guaranteed.

Further limiting, the connecting clamp is of a U-shaped structure, and the tail ends of the two side arms of the connecting clamp respectively extend into the positive current collecting column and the negative current collecting column corresponding to the two adjacent single batteries; the position that is close to U type bottom on the both sides arm of coupling fixture corresponds and has seted up the screw, the both ends of locking screw pass both sides screw respectively and extend to the coupling fixture outside, establish ties and make up two battery cells through the centre gripping principle similar to tweezers, convenient operation presss from both sides tight back stability moreover and is good.

Further limiting, an embedded groove is formed in the connecting and tightly-attaching surface of the positive current collecting column and the negative current collecting column of the two adjacent single batteries, a heat pipe or a heat bar is embedded in the embedded groove, the current collecting columns and the heat transfer component are connected and integrated, installation space is saved, and heat transfer efficiency is greatly improved.

Further, one end of the heat pipe or the heat bar is bent into an L shape, and one end bent to the horizontal part is connected with the semiconductor refrigeration piece.

Further limiting, the cross sections of the positive current collecting column and the negative current collecting column are of rectangular structures, and one ends of the positive current collecting column and one ends of the negative current collecting column are bent.

Further, the bent ends of the positive current collecting column and the negative current collecting column are connected with the semiconductor refrigerating sheet.

The beneficial effects of the utility model reside in that:

1. utilize coupling assembling to establish ties two adjacent battery cells, thereby satisfy the user demand of reality, utilize coupling assembling to connect two adjacent battery cells simultaneously, a plurality of battery cell stable in structure who guarantees to establish ties can not rock, thereby guarantee the stability and the security of battery cell series connection, can save simultaneously and connect through the wire between large capacity battery cell, save the material, it is great with the anodal current collection post lug connection area between two batteries, it generates heat to have reduced the line between the battery.

2. The utility model discloses a battery, including single battery, positive pole mass flow post and negative pole mass flow post are connected, and the positive pole mass flow post is connected with the contact of positive negative pole between the single battery, improves the stability of establishing ties between the single battery, and rethread clamping jig uses alone or with screw rod, nut or connecting jig combination, with adjacent positive pole mass flow post and negative pole mass flow post fastening connection to two adjacent battery cells are connected firmly into the field, and it is convenient to connect, stable in structure, and occupation space is little.

3. This application adopts the connected mode of nut and screw rod, and simple structure, cost are low, have reduced use cost to can guarantee that adjacent battery cell's connection is firm reliable.

4. The utility model provides a coupling assembling adopts the clamping jig of U type design, realizes the connection between the adjacent battery cell, has improved the simplicity and convenience of connected mode between the battery cell, improves the efficiency of battery cell when dismouting and maintenance, saves time to battery mass flow post surface nondestructive contact does not influence the performance of mass flow post self function, and easy operation is convenient, improves work efficiency.

5. This application can also adopt the cooperation between coupling jig and the joint hole to guarantee the stable connection of a plurality of battery cells, simultaneously in order to avoid the not hard up battery cell that leads to of coupling jig to connect the shakiness, adjust the opening interval of coupling jig regulation end through anchor clamps regulating part and adjust the steadiness that coupling jig joint terminal pair is connected to adjacent battery cell, the regulative mode is simple swift, the operation degree of difficulty is low, practices thrift the dismouting time, improves work efficiency, simple structure is with low costs.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view showing a series connection of large capacity unit cells according to example 1;

FIG. 2 is a schematic view of the connecting assembly of example 1;

FIG. 3 is a plan view of a large-capacity unit cell in example 1 in a series connection;

FIG. 4 is a schematic view of a thermal control structure of embodiment 2;

FIG. 5 is a schematic view of a series connection of large capacity unit cells of example 3;

FIG. 6 is a schematic view of a large-capacity unit cell according to example 3;

FIG. 7 is a schematic view showing a series connection of large capacity unit cells of example 4;

FIG. 8 is a schematic view of the connection assembly of example 4;

FIG. 9 is a schematic view showing a series connection of large capacity unit cells of example 5;

fig. 10 is a schematic view of the connection assembly of example 5.

In the figure: 1-single battery, 11-positive current collecting column, 12-negative current collecting column, 13-groove, 14-through hole, 15-embedded groove, 2-connecting component, 21-first L-shaped arm, 22-second L-shaped arm, 23-fixed pin shaft, 24-fastening bolt, 25-connecting screw rod, 26-connecting nut, 27-connecting clamp, 3-heat bar and 4-semiconductor refrigerator.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It should be understood that directional terms such as "upper" and "lower" are used herein in accordance with the accompanying drawings for better understanding of the technical aspects of the present invention.

This application mainly is to the series connection combination of large capacity battery, provides new series connection mode, has changed current complicated operation and fastening difficulty, has the unstability scheduling problem, provides neotype series connection structure, guarantees cell 1's connection stability and security on with low costs, easy operation's basis.

This connection structure of large capacity battery cell 1 series, mainly set up anodal mass flow post 11 and negative pole mass flow post 12 in the both sides of battery cell 1, with anodal mass flow post 11 and the distribution of negative pole mass flow post 12 both sides, the anodal mass flow post 11 of a battery cell 1 and the negative pole mass flow post 12 of an adjacent battery cell 1 pass through coupling assembling 2 series connection, utilize the space utilization between anodal mass flow post 11 and the negative pole mass flow post 12, accomplish battery cell 1's connection, it connects through the wire to have saved between the large capacity battery cell, and the material is saved. In order to save the installation space, grooves 13 or/and through holes 14 are arranged on the positive current collecting post 11 and the negative current collecting post 12, one end of the connecting component 2 extends into the groove 13 or/and through hole 14 of one single battery 1, the other end extends into the corresponding groove 13 or/and through hole 14 of the adjacent single battery 1, and the series connection is completed by using simple connecting structures such as the grooves 13 or the through holes 14.

The structure of the connection assembly 2 of the present application may be formed by the following structure forms, specifically:

the first connecting assembly 2 has the structure that: the strip U-shaped clamp is characterized in that strip grooves 13 matched with the clamping clamp are formed in the positive current collecting column 11 and the negative current collecting column 12 of each single battery 1, two arms of the strip U-shaped clamp extend into the strip grooves 13 of the positive current collecting column 11 and the negative current collecting column 12 corresponding to the two adjacent single batteries 1, the two single batteries 1 are connected in series by a simple U-shaped structure, and operation is convenient.

The second connecting assembly 2 has the following structure: the clamping fixture comprises a first L-shaped arm 21, a second L-shaped arm 22, a fixed pin shaft 23 and a fastening bolt 24, wherein the fixed pin shaft 23 is arranged at the turning part of the second L-shaped arm 22, and the first L-shaped arm 21 is hinged with the second L-shaped arm 22 through the fixed pin shaft 23; the short arm of the first L-shaped arm 21 and the short arm of the second L-shaped arm 22 are arranged in a stacked mode and connected through the fastening bolt 24, the whole clamping fixture can be tightened through tightening the fastening bolt 24, operation is simple, and the clamping effect is good.

The third connecting component 2 has the structure that: connecting screw 25 and coupling nut 26, connecting screw 25 one end is arranged in recess 13 on the anodal current-collecting column 11 of battery cell 1, and connecting screw 25's the other end extends to in the recess 13 that adjacent battery cell 1 negative pole current-collecting column 12 corresponds, and connecting screw 25's both ends are fastened through coupling nut 26 that is located battery cell 1 recess 13 respectively, utilize simple standard connecting piece can accomplish the series connection of battery.

The fourth connecting component 2 has the following structure: the device comprises a locking screw, a locking nut and a connecting clamp 27, wherein the connecting clamp 27 is of a U-shaped structure, and the tail ends of two side arms of the connecting clamp 27 respectively extend into a positive current collecting column 11 and a negative current collecting column 12 corresponding to two adjacent single batteries 1; screw holes are correspondingly formed in positions, close to the U-shaped bottom, of the two side arms of the connecting clamp 27, two ends of the locking screw rod penetrate through the screw holes in the two sides respectively and extend to the outer side of the connecting clamp 27, the two single batteries 1 are connected in series and combined through a clamping principle similar to tweezers, operation is convenient, and stability is good after clamping.

The structure of the four connecting assemblies 2 can be combined for use to enhance the fastening effect and improve the stability, and the structure can be combined with a second connecting structure and a third connecting structure for use.

In addition, in order to save installation space and improve heat transfer efficiency, the embedded groove 15 is formed in the close contact surface of the positive current collecting column 11 and the negative current collecting column 12 of the two adjacent single batteries 1, the heat pipe or the heat bar 3 is embedded in the embedded groove 15, the current collecting columns are connected and integrated with the heat transfer component, one end of the heat pipe or the heat bar 3 is bent into an L shape, and one end of the heat pipe or the heat bar 3 bent to the horizontal part is connected with the semiconductor refrigerating sheet.

Or the cross sections of the positive current collecting post 11 and the negative current collecting post 12 are rectangular structures, and one end of the positive current collecting post 11 and one end of the negative current collecting post 12 are bent. The bent ends of the positive current collecting column 11 and the negative current collecting column 12 are connected with the semiconductor refrigerating sheet.

To further explain the technical solution of the present application, the following description is made with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1, 2, and 3, the connection structure for connecting large-capacity single batteries 1 in series according to the present embodiment is formed by connecting 3 groups of large-capacity single batteries 1 in series, the positive current collecting posts 11 and the negative current collecting posts 12 of the 3 groups of single batteries 1 are located on two opposite sides of the case of the large-capacity battery, the cross section of each current collecting post is rectangular, and part of each current collecting post leaks out of the case and is insulated and sealed from the case.

To explain further, grooves 13 are respectively formed in the front and rear panels of the positive current collecting post 11 and the negative current collecting post 12 of each unit battery 1, and the grooves 13 are arranged along the length direction of the positive current collecting post 11 and the negative current collecting post 12, that is, the grooves 13 are formed in a straight-through type strip shape from the bottom to the top of the positive current collecting post 12. When a first battery is connected with a second battery in series, the negative current collecting post 12 of the first battery is tightly attached to the side part of the positive current collecting post 11 of the second battery, the adjacent protrusion parts of the negative current collecting post 12 tightly attached to the two corresponding straight-through grooves 13 on the positive current collecting post 11 can be inserted into a clamping fixture (as shown in fig. 2), the clamping fixture is of a U-shaped structure, the clamping fixture is matched with the connected negative current collecting post 12 and the straight-through groove 13 of the positive current collecting post 11, two arms extend into the strip-shaped grooves 13 of the positive current collecting post 11 and the negative current collecting post 12 corresponding to the two adjacent single batteries 1, the strip-shaped clamping fixture is tightly matched with the adjacent protrusion parts of the straight-through grooves 13 on the connected positive current collecting post 11 and the negative current collecting post 12, so that the adjacent 2 single batteries 1 are clamped and connected, the two adjacent large-capacity batteries need to apply clamping force simultaneously, therefore, two groups of high-capacity batteries can be connected in series through the strip-shaped clamping fixture, the 3 rd and 4 th single batteries 1 are clamped in the same mode, the direct connection contact area of the positive and negative current collecting columns between every two single batteries is large, and the heat emission of connecting lines between the batteries is effectively reduced. In order to make the adjacent positive and negative current collector columns 12 fit more closely, a flexible conductive adhesive or conductive film may be disposed between the close contact surfaces of the adjacent positive and negative current collector columns 12.

Example 2

The embodiment of the present invention is different from embodiment 1 in that, based on embodiment 1: as shown in fig. 4, the present embodiment relates to a connection structure for connecting large-capacity single batteries 1 in series, in which the large-capacity single battery 1 is formed by connecting 3 groups of large-capacity single batteries 1 in series, positive current collecting columns and negative current collecting columns 12 of the 3 groups of single batteries 1 are located on two opposite sides of a housing of the large-capacity battery, the cross section of each current collecting column is rectangular, and part of each current collecting column leaks out of the housing and is subjected to insulation sealing treatment with the housing. The connection close-contact surfaces of the positive current collecting post 11 and the negative current collecting post 12 corresponding to two adjacent single batteries 1 are respectively provided with a U-shaped embedded groove 15, so that the U-shaped embedded grooves 15 of the positive current collecting post 12 and the negative current collecting post 12 of two adjacent single batteries 1 are spliced to form a rectangular through groove, the heat bar 3 is embedded and inserted into the rectangular through groove, and the two adjacent single batteries 1 are subjected to heat dissipation and heat transfer simultaneously.

Further, the heat bar 3 of the present embodiment is a common commercial heat bar 3, which mainly performs heat transferring and dissipating functions. The L type of buckling into with the upper end of hot row 3, buckles to the top that the horizontal part partially extended to battery cell 1, is connected with the semiconductor refrigeration piece of installing in battery cell 1 top, and the semiconductor refrigeration piece cools off the cooling through hot row 3 to battery cell 1 promptly, and the heat transfer soaking characteristic and the conduction area that have make full use of hot row 3 are big moreover, and heat transfer efficiency does the advantage, improves heat transfer efficiency greatly.

Example 3

The embodiment of the present invention is different from embodiment 1 in that, based on embodiment 1: as shown in fig. 5 and 6, in the present embodiment, 5 pairs of rectangular grooves 13 are respectively disposed on the front panel and the rear panel of the positive current collecting post 11 and the negative current collecting post 12 of each unit battery 1, the horizontal distance between the groove 13 and the current collecting post close-contact surfaces of the two unit batteries 1 is about 15cm, through holes 14 are respectively disposed on the inner wall of the groove 13 and the current collecting post close-contact surfaces of the two corresponding unit batteries 1, and when the negative current collecting post 12 of the first battery and the positive current collecting post 11 of the second battery are connected in series, the 5 pairs of grooves 13 of the front panel of the 2 current collecting posts and the 5 pairs of grooves 13 corresponding to the rear panel are respectively connected by the connecting component 2 in a clamping manner.

Further, the connection assembly 2 of the present embodiment includes a connection screw 25 and a connection nut 26, one end of the connection screw 25 is inserted into the through hole 14 in the groove 13 of the positive current collecting column 11 of the first single battery 1, the other end of the connection screw 25 passes through the through hole 14 of the close-contact surface panel of the negative current collecting column 12 of the first single battery 1, the through hole 14 of the close-contact surface panel of the positive current collecting column 11 of the second single battery 1 extends into the groove 13 of the positive current collecting column 11 of the second single battery 1, two ends of the connection screw 25 are fastened by nuts located in the grooves 13 of the first single battery 1 and the second single battery 1, and the first single battery 1 and the second single battery 1 are clamped and connected in series by tightening the nuts.

By analogy, the series connection of a plurality of single batteries 1 is realized, so that a large-capacity battery is formed, and the series connection of the large-capacity battery can be completed by using a simple standard connecting piece.

Example 4

The specific implementation manner of the present embodiment is a modification made on the basis of embodiment 1, and is different from embodiment 1 in that: as shown in fig. 7 and 8, the present embodiment relates to a connection structure in which large capacity single batteries 1 are connected in series, wherein the large capacity single batteries 1 are formed by connecting 3 groups of large capacity single batteries 1 in series. The positive current collecting columns and the negative current collecting columns 12 of the 3 groups of single batteries 1 are positioned on two opposite sides of the shell of the large-capacity battery, the cross sections of the current collecting columns are rectangular, and part of the current collecting columns leaks out of the shell and is subjected to insulation sealing treatment with the shell.

The positive current collecting post 11 of the present embodiment is provided with 5 pairs of grooves 13, the negative current collecting post 12 is provided with 5 pairs of grooves 13 at corresponding positions, and the grooves 13 on the positive current collecting post 11 and the grooves 13 on the negative current collecting post 12 are in one-to-one correspondence, so that the heights are consistent, and the alignment is facilitated. The groove 13 is a rectangular groove 13, when the negative current collecting post 12 of the first single battery 1 and the positive current collecting post 11 of the second single battery 1 are connected in series, the U-shaped connecting clamp 27 is respectively inserted into the 5 pairs of grooves 13 on the front panel and the 5 pairs of grooves 13 on the rear panel of the positive current collecting post and the negative current collecting post of the 2 single batteries 1, and the tail ends of the two side arms of the connecting clamp 27 respectively extend into the grooves 13 of the front panel and the rear panel of the positive current collecting post 11 and the negative current collecting post 12 corresponding to the two single batteries 1; it should be further noted that the bottom of the U-shaped groove of the connecting clamp 27 can be machined into a V-shaped groove, which deforms during clamping to ensure better clamping force between the two arms. In addition, two screw holes are correspondingly formed in the positions, close to the U-shaped bottom, of the two side arms of the U-shaped groove, the two ends of the locking screw rod penetrate through the screw holes in the two sides respectively and extend to the outer side of the connecting clamp 27, the two single batteries 1 are connected in series and combined through a clamping principle similar to tweezers, the operation is convenient, the stability is good after the locking screw rod is clamped, clamping force is applied through the locking nuts on the two sides, two groups of high-capacity batteries can be connected in series after the 10 groups of connecting clamps 27 on adjacent current collecting columns apply the clamping force together, and the 3 rd battery is clamped in the same mode. And flexible conductive adhesive or conductive film can be arranged between the close contact surfaces of the adjacent positive and negative current collecting columns 12 to ensure that the positive and negative current collecting columns are matched more tightly.

Example 5

The specific implementation manner of the present embodiment is a modification made on the basis of embodiment 4, and is different from embodiment 4 in that: as shown in fig. 9 and 10, 5 pairs of grooves 13 are provided on the positive current collecting post 11, 5 pairs of grooves 13 are provided on the negative current collecting post 12, and the grooves 13 on the positive current collecting post 11 and the grooves 13 on the negative current collecting post 12 correspond to each other one by one, so that the heights are consistent and the alignment is convenient. The groove 13 is a rectangular groove 13, and when the negative current collecting post 12 of the first single battery 1 and the positive current collecting post 11 of the second single battery 1 are connected in series, the clamping fixtures are respectively inserted into 5 pairs of grooves 13 on the front panel and 5 pairs of grooves 13 on the rear panel of the positive current collecting post and the negative current collecting post of 2 single batteries 1.

Referring to fig. 10, the clamping fixture includes a first L-shaped arm 21, a second L-shaped arm 22, a fixing pin 23 and a fastening bolt 24, the fixing pin 23 is disposed at a turning point of the second L-shaped arm 22, and the first L-shaped arm 21 is hinged to the second L-shaped arm 22 through the fixing pin 23; the short arm of the first L-shaped arm 21 and the short arm of the second L-shaped arm 22 are arranged in a stacked mode and connected through the fastening bolt 24, the fastening bolt 24 is used for tightening and compressing the gap between the short arms of the first L-shaped arm 21 and the second L-shaped arm 22 to form a stretching type clamp, the distance between the long arms of the first L-shaped arm 21 and the second L-shaped arm 22 is gradually reduced, the whole clamping clamp can be tightened, operation is simple, and the clamping effect is good.

Example 6

The specific implementation manner of the present embodiment is a modification made on the basis of embodiment 2, and is different from embodiment 2 in that: the embedded grooves 15 are respectively formed in the connecting close contact surfaces of the positive current collecting column 11 and the negative current collecting column 12 corresponding to the two adjacent single batteries 1, so that the embedded grooves 15 of the positive current collecting column 12 and the negative current collecting column 12 of the two adjacent single batteries 1 are spliced to form a circular through groove, a plurality of parallel heat pipes are embedded and inserted into the through groove, and the two adjacent single batteries 1 are subjected to heat dissipation and heat transfer simultaneously.

Further, the heat pipe of the present embodiment is a common commercially available heat pipe, which mainly performs heat transfer and heat dissipation functions. The upper end of the heat pipe is bent into an L shape, the upper end of the heat pipe is bent to the horizontal part to extend to the top of the single battery 1, and the upper end of the heat pipe is connected with a semiconductor refrigerating piece arranged above the single battery 1, namely, the semiconductor refrigerating piece refrigerates and cools the single battery 1 through the heat bar 3.

It should be further explained that the number of the heat pipes in this embodiment may also be set singly or in parallel, and is selected according to the opening position and the size of the embedded groove 15, but it is better to closely fit the pipe wall of the heat pipe with the inner wall of the through groove of the positive and negative current collecting columns, so as to ensure good heat transfer effect.

The number of the grooves 13 or the through holes 14 on the positive and negative current collecting posts, the groove type of the grooves 13, and the arrangement position of the grooves 13 in the embodiments 1 to 6 can be adjusted adaptively according to the configuration of the positive and negative current collecting posts of the unit battery 1. In addition, the material of the current collecting column and the material, size, number, etc. of the connecting assembly 2 in the above embodiments can be adjusted according to actual situations, and on the premise of design of stable fastening effect, cost and performance, the current material, specification, processing conditions, etc. can be selected from the advantages under the condition of ensuring the effect and performance, and the contents of material selection, number setting, etc. do not belong to the unique design of the present application.

This application mainly is that coupling assembling 2 who utilizes different configuration transform establishes ties two adjacent battery cells 1 to satisfy the user demand of reality, utilize coupling assembling 2 to connect two adjacent battery cells 1 simultaneously, guarantee a plurality of battery cells 1 stable in structure who establishes ties and can not rock, thereby guarantee the stability and the security of battery cell 1 series connection, guarantee simultaneously that it is convenient to connect, stable in structure, occupation space is little.

While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (12)

1. The utility model provides a connection structure that large capacity battery cell connects in series which characterized in that sets up anodal mass flow post (11) and negative pole mass flow post (12) in the both sides of battery cell (1), and anodal mass flow post (11) of a battery cell and the negative pole mass flow post (12) of an adjacent battery cell pass through coupling assembling (2) series connection.

2. A connection structure for connecting large-capacity single batteries in series according to claim 1, wherein grooves (13) or/and through holes (14) are formed on the positive current collecting column (11) and the negative current collecting column (12), one end of the connection component (2) extends into the groove (13) or/and through hole (14) of one single battery (1), and the other end extends into the corresponding groove (13) or/and through hole (14) of the adjacent single battery (1).

3. A connection structure for connecting large-capacity single batteries in series according to claim 2, wherein the connection assembly (2) comprises a clamping fixture, the clamping fixture is of a U-shaped structure, and the ends of two side arms of the clamping fixture extend into the positive current collecting column (11) and the negative current collecting column (12) corresponding to two adjacent single batteries (1) respectively to clamp the two adjacent single batteries.

4. A connection structure for connecting large-capacity single batteries in series according to claim 3, wherein the clamping fixture is a strip-shaped U-shaped fixture, strip-shaped grooves matched with the clamping fixture are arranged on the positive current collecting column (11) and the negative current collecting column (12) of the single batteries, and two arms of the clamping fixture extend into the strip-shaped grooves of the positive current collecting column and the negative current collecting column corresponding to two adjacent single batteries.

5. The connection structure for connecting large-capacity single batteries in series according to claim 3 or 4, wherein the clamping fixture further comprises a first L-shaped arm (21), a second L-shaped arm (22), a fixing pin (23) and a fastening bolt (24), the fixing pin (23) is arranged at the turning point of the second L-shaped arm (22), and the first L-shaped arm (21) is hinged with the second L-shaped arm (22) through the fixing pin (23); the short arm of the first L-shaped arm (21) and the short arm of the second L-shaped arm (22) are arranged in a stacked mode and connected through a fastening bolt.

6. A connection structure of high-capacity single batteries connected in series according to any one of claims 1 to 4, characterized in that the connection assembly further comprises a connection screw (25) and a connection nut (26), one end of the connection screw (25) is located in the groove (13) on the positive current collecting column (11) of the single battery, the other end of the connection screw (25) extends into the groove (13) corresponding to the negative current collecting column (12) of the adjacent single battery, and the two ends of the connection screw (25) are fastened through the connection nut (26) located in the groove (13) of the single battery respectively.

7. The connection structure for connecting large-capacity single batteries in series according to any one of claims 1 to 4, wherein the connection assembly comprises a locking screw, a locking nut and a connection clamp (27), and two ends of the connection clamp (27) respectively extend into the positive current collecting column (11) and the negative current collecting column (12) corresponding to two adjacent single batteries; the locking screw rod extends from one side end of the connecting clamp (27) to the other side end, and the locking nuts are arranged at two ends of the locking screw rod and located on the outer side of the connecting clamp (27).

8. The connection structure for connecting large-capacity single batteries in series according to claim 7, wherein the connection clamp (27) is of a U-shaped structure, and the ends of the two side arms of the connection clamp (27) respectively extend into the positive current collecting column (11) and the negative current collecting column (12) corresponding to the two adjacent single batteries; screw holes are correspondingly formed in the positions, close to the U-shaped bottom, of the two side arms of the connecting clamp (27), and the two ends of the locking screw rod penetrate through the screw holes in the two sides respectively and extend to the outer side of the connecting clamp (27).

9. The connection structure for connecting large-capacity single batteries in series according to claim 8, wherein the close contact surface of the positive current collecting column (11) and the negative current collecting column (12) of two adjacent single batteries is provided with an embedded groove (15), and a heat pipe or a heat bar (3) is embedded in the embedded groove (15).

10. A connection structure for connecting a large number of unit cells in series as claimed in claim 9, wherein one end of the heat pipe or the heat bar (3) is bent into an L-shape, and one end bent to a horizontal portion is connected to the semiconductor chilling plate.

11. A connection structure for connecting large-capacity unit cells in series as claimed in claim 1, wherein the cross sections of the positive current collecting post (11) and the negative current collecting post (12) are rectangular, and one ends of the positive current collecting post (11) and the negative current collecting post (12) are bent.

12. The connection structure of a large capacity unit battery in series as claimed in claim 11, wherein the bent ends of the positive current collecting post (11) and the negative current collecting post (12) are connected to the semiconductor cooling plate.

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