A lithium battery cell connection component

Abstract

The present invention is applicable to the technical field of lithium batteries, and provides a lithium battery cell connection assembly, comprising a plurality of plug-in bases and a protective cover; a plurality of cells are evenly plugged and arranged on the surface of the base; a positive conductive column and a negative conductive column are arranged on the top of the cell; a connecting portion is sleeved between the cells on the same base; a first conductive block is arranged on the inner wall of an annular groove near its inner top end, and a second conductive block is arranged on the inner wall near its inner bottom end; a conductive portion is rotatably arranged in the annular groove; a lifting portion is slidably arranged between the conductive portions; a first conductive rail is fixed to the bottom of an annular insulating plate, and a second conductive rail is fixed to the top of the annular insulating plate. The device drives each group of conductive portions to rotate synchronously by controlling the descent of the lifting portion, so that the positive conductive column of each group of cells is connected to the positive conductive column of the adjacent cell, and the corresponding negative conductive column is connected to the adjacent negative conductive column, so that the groups of cells on the same base are converted into parallel connection, realizing series discharge and parallel charging.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and more specifically, to a lithium battery cell connection assembly. Background Art

[0002] Lithium batteries are generally discharged in series and charged in series. When charging in series, the voltage division principle is adopted. Due to the inconsistency of the performance of each battery, the voltage is unevenly distributed during the charging process, some are higher, and some are lower. When the total voltage is not sufficient, the voltage of some individual batteries will reach a higher value, and there is bound to be a risk of overcharging.

[0003] To avoid unsafe accidents, the current method is to design the charging voltage to be low, which in turn leads to the problem of insufficient charging of lithium batteries. In series connection, due to the different internal resistance of each battery cell, the voltage of each battery cell is inconsistent (the potential difference between the positive and negative electrodes), resulting in a voltage difference. The poor consistency of the battery during use will accelerate the battery degradation.

[0004] However, in parallel, the voltage of each battery cell (the potential difference between the positive and negative electrodes) is equal, and the battery life consistency is good. If parallel charging is adopted, not only can the above problems be avoided, but also the battery performance can be further improved. Therefore, it is very necessary to design a battery cell connection component that can switch between series and parallel modes according to actual usage needs to realize series discharge and parallel charging. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a lithium battery cell connection assembly. When charging, the lifting part is controlled to descend to drive each group of conductive parts to rotate synchronously, so that the positive conductive column of each group of battery cells is connected to the positive conductive column of the adjacent battery cells, and the corresponding negative conductive column is connected to the adjacent negative conductive column, so that the groups of battery cells on the same base are converted into parallel, realizing series discharge and parallel charging, avoiding the attenuation of the lithium battery, and at the same time, improving the performance of the lithium battery.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lithium battery cell connection assembly comprises a plurality of plug-in bases and protective covers fixed to the surfaces of the bases by fastening bolts; a plurality of cells are evenly plugged on the surface of the bases; a positive conductive column and a negative conductive column are arranged on the top of the cells; a connecting portion is sleeved between the cells on the same base; the connecting portion comprises a plurality of insulating rings; an annular groove is formed on the inner circumferential side surface of the insulating ring; a first conductive block is arranged on the inner wall of the annular groove near its inner top end, and a second conductive block is arranged on the inner wall near its inner bottom end.

[0008] Two first conductive plates are symmetrically fixed through the outer peripheral side surface of the insulating ring near the bottom end of the annular groove, and two second conductive plates are symmetrically fixed through the outer peripheral side surface of the insulating ring near the top end of the annular groove; a positive conductive ring sleeved with the positive conductive column is fixed to the end of the first conductive plate; a negative conductive ring sleeved with the negative conductive column is fixed to the end of the second conductive plate; the first conductive block is electrically connected to the second conductive plate through a cable; the second conductive block is electrically connected to the first conductive plate through a cable.

[0009] A conductive part is rotatably arranged in the annular groove; a lifting part is slidably arranged between each of the conductive parts; the conductive part includes an annular insulating plate rotatably arranged in the annular groove; a first conductive rail is fixed at the bottom of the annular insulating plate, and a second conductive rail is fixed at the top.

[0010] The present invention is further configured as follows: a heat dissipation cavity is provided on the top of the base, and a plurality of limit grooves are symmetrically provided on the top; a plurality of first plug holes are evenly provided on the bottom surface of the limit groove; and a plurality of support plates are symmetrically fixed to the inner wall of the heat dissipation cavity.

[0011] A mounting seat is fixed at the bottom of the battery cell and is plugged into two opposite limit grooves; a plurality of second plug holes are symmetrically provided on the surface of the mounting seat; a fixing frame is fixed on the outer peripheral side of the protective cover; a plurality of plug rods are evenly fixed on the bottom surface of the fixing frame and are plugged into the corresponding first and second plug holes.

[0012] The present invention is further configured as follows: a plurality of plug boards are evenly fixed on one side of the base, and a plurality of slots are evenly opened on the other opposite side; a plug board on the base is plugged into and matched with a slot on an adjacent plug board.

[0013] The surfaces of the fixing frame and the base are both provided with a plurality of mounting holes; the fixing frame and the bases are fixedly connected by fastening bolts; and the two opposite sides of the protective cover are both provided with a plurality of heat dissipation holes.

[0014] The present invention is further configured as follows: a vertical plate is symmetrically fixed to the bottom surface of the insulating ring; and rubber plates are symmetrically fixed to two opposite side surfaces of the vertical plate.

[0015] A sealing top cover is fixed to the top of the protective cover by fastening bolts; an extension plate is symmetrically fixed to the side surface of the insulating ring; a sleeve is fixed to the surface of the extension plate; and a plurality of plug posts that are plugged into and matched with the corresponding sleeves are fixed to the top of the inner part of the sealing top cover.

[0016] The present invention is further configured as follows: a positive electrode connecting column is fixed to the side surface of the positive electrode conductive ring on the outermost insulating ring; a negative electrode connecting column is fixed to the side surface of the negative electrode conductive ring on the other outermost insulating ring; and a positive electrode conductive plug and a negative electrode conductive plug are respectively fixed to the ends of the positive electrode connecting column and the negative electrode connecting column.

[0017] The first conductive plate, the second conductive plate, the positive electrode connecting column and the negative electrode connecting column are all provided with cylindrical insulating sleeves; the outer peripheral sides of the positive electrode conductive ring and the negative electrode conductive ring are all provided with annular insulating sleeves.

[0018] The present invention is further configured as follows: a plurality of negative pole sockets that are plugged and matched with corresponding negative pole conductive plugs are evenly fixed on one inner wall of the protective cover, and a plurality of positive pole sockets that are plugged and matched with corresponding positive pole conductive plugs are evenly fixed on the other opposite inner wall.

[0019] The side of the protective cover is fixed with a positive terminal and a negative terminal in sequence; each negative conductive plug is connected in series through a cable and is electrically connected to the negative terminal; each positive conductive plug is connected in series through a cable and is electrically connected to the positive terminal.

[0020] The present invention is further configured as follows: a connecting plate is fixed to the inner wall of the annular insulating plate; a sleeve is fixed through the surface of the connecting plate; and a spiral groove is opened on the inner wall of the sleeve.

[0021] The lifting part comprises a lifting plate; a plurality of extension rods are evenly fixed on the bottom surface of the lifting plate; ear rods are fixed on the peripheral side surfaces of the extension rods; and a ball head that is slidably matched with the spiral groove is fixed on the end of the ear rod.

[0022] The present invention is further configured as follows: a screw is fixed on the top of the lifting plate; a baffle is fixed on the bottom surface of the protective cover; an electric push rod is fixed on the top of the baffle; a rotating plate is rotatably arranged at the telescopic end of the electric push rod; a plurality of positioning holes which are plugged into and matched with corresponding screws are opened on the surface of the rotating plate; and a fastening nut is threaded on the screw.

[0023] The advantages of the present invention are:

[0024] The present invention inserts each group of battery cells into the base, and then lowers the protective cover so that the insertion rod at the bottom of the protective cover is inserted into the corresponding first plug hole and second plug hole, and the anti-slip cover is fixed to each base by fastening bolts, so as to realize the rapid assembly of the battery cells and the subsequent replacement of the battery cells, thereby improving the efficiency of the battery cell assembly.

[0025] In the present invention, during the discharge process, each group of battery cells on the same base is electrically connected in series. At this time, the positive conductive column of each group of battery cells is connected to the negative conductive column of the adjacent battery cells. When charging, the lifting part is controlled to descend to drive each group of conductive parts to rotate synchronously, so that the positive conductive column of each group of battery cells is connected to the positive conductive column of the adjacent battery cells, and the corresponding negative conductive column is connected to the adjacent negative conductive column, so that the groups of battery cells on the same base are converted into parallel, realizing series discharge and parallel charging, avoiding the attenuation of the lithium battery, and at the same time, improving the performance of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a structural schematic diagram of a lithium battery cell connection assembly of the present invention.

[0027] Figure 2 The present invention is a schematic structural diagram of a lithium battery cell connection component and a cell assembly.

[0028] Figure 3 It is a structural schematic diagram of the base of the present invention.

[0029] Figure 4 It is a schematic diagram of the structure of the battery cell of the present invention.

[0030] Figure 5 It is a structural schematic diagram of the connecting portion of the present invention.

[0031] Figure 6 It is a structural schematic diagram of the connecting portion of the present invention from a right viewing angle.

[0032] Figure 7 It is a schematic structural diagram of the conductive part of the present invention.

[0033] Figure 8 It is a schematic structural diagram of the protective cover of the present invention.

[0034] Fig. 9 It is a structural schematic diagram of the lifting part of the present invention.

[0035] Fig.10 It is a structural schematic diagram of the base and battery core assembly of the present invention.

[0036] Fig.11 For the present invention Fig.10 Schematic diagram of the structure when each group of battery cells is connected in parallel.

[0037] Fig.12 For the present invention Fig.10 A schematic diagram of the structure from another angle when each group of battery cells is connected in parallel.

[0038] Fig.13 For the present invention Fig.10 Schematic diagram of the structure when each group of battery cells is connected in series.

[0039] Fig.14 For the present invention Fig.10 Schematic diagram of the structure from another angle when each group of battery cells is connected in series.

[0040] In the figure: 1, base; 2, protective cover; 3, battery cell; 4, positive conductive column; 5, negative conductive column; 6, connecting part; 7, insulating ring; 8, annular groove; 9, first conductive block; 10, second conductive block; 11, first conductive plate; 12, second conductive plate; 13, positive conductive ring; 14, negative conductive ring; 15, conductive part; 16, lifting part; 17, annular insulating plate; 18, first conductive rail; 19, second conductive rail; 20, heat dissipation cavity; 21, limiting groove; 22, first plug hole; 23, support plate; 24, mounting seat; 25, second plug hole; 26, fixing frame; 27, plug rod; 28, plug plate; 29 , slot; 30, mounting hole; 31, heat dissipation hole; 32, vertical plate; 33, rubber plate; 34, extension plate; 35, sleeve; 36, negative connection post; 37, positive conductive plug; 38, negative conductive plug; 39, cylindrical insulating sleeve; 40, annular insulating sleeve; 41, negative socket; 42, positive socket; 43, positive terminal; 44, negative terminal; 45, connecting plate; 46, sleeve; 47, spiral groove; 48, lifting plate; 49, extension rod; 50, ear rod; 51, ball head; 52, screw; 53, baffle; 54, electric push rod; 55, rotating plate; 56, positioning hole; 57, positive connection post. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0043] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0044] For example, see Figure 1-14 , the present invention provides the following technical solutions:

[0045] A lithium battery cell connection assembly, specifically, comprises a plurality of plug-in bases 1 and a protective cover 2 fixed to the surface of each base 1 by fastening bolts; a plurality of cells 3 are evenly plugged and arranged on the surface of the base 1; a positive conductive column 4 and a negative conductive column 5 are arranged on the top of the cell 3; a connecting portion 6 is sleeved between the cells 3 on the same base 1; the connecting portion 6 comprises a plurality of insulating rings 7; an annular groove 8 is provided on the inner side of the insulating ring 7; a first conductive block 9 is provided on the inner wall of the annular groove 8 near its inner top end, and a second conductive block 10 is provided on the inner wall near its inner bottom end; two first conductive plates 11 are symmetrically penetrated and fixed on the outer side of the insulating ring 7 near the inner bottom end of the annular groove 8, and the outer side of the insulating ring 7 near the inner bottom end thereof Two second conductive plates 12 are symmetrically fixed through the top of the annular groove 8; a positive conductive ring 13 sleeved with the positive conductive column 4 is fixed to the end of the first conductive plate 11; a negative conductive ring 14 sleeved with the negative conductive column 5 is fixed to the end of the second conductive plate 12; the first conductive block 9 is electrically connected to the second conductive plate 12 through a cable; the second conductive block 10 is electrically connected to the first conductive plate 11 through a cable; a conductive part 15 is rotatably arranged in the annular groove 8; a lifting part 16 is slidably arranged between each conductive part 15; the conductive part 15 includes an annular insulating plate 17 rotatably arranged in the annular groove 8; a first conductive rail 18 is fixed to the bottom of the annular insulating plate 17, and a second conductive rail 19 is fixed to the top thereof.

[0046] Working principle of the first embodiment:

[0047] During the discharge process, the groups of battery cells 3 on the same base 1 are electrically connected in series. At this time, the positive conductive column 4 of each group of battery cells 3 is connected to the negative conductive column 5 of the adjacent battery cells 3. When charging, the lifting part 16 is controlled to descend to drive the groups of conductive parts 15 to rotate synchronously, so that the positive conductive column 4 of each group of battery cells 3 is connected to the positive conductive column 4 of the adjacent battery cells 3, and the corresponding negative conductive column 5 is connected to the adjacent negative conductive column 5, so that the groups of battery cells 3 on the same base 1 are converted into parallel, realizing series discharge and parallel charging, avoiding the attenuation of the lithium battery, and at the same time, improving the performance of the lithium battery.

[0048] For example 2, please refer to Figure 1-14 The second embodiment is improved on the basis of the first embodiment as follows. Specifically, a heat dissipation cavity 20 is provided on the top of the base 1, and a plurality of limit grooves 21 are symmetrically provided on the top thereof; a plurality of first plug holes 22 are evenly provided on the inner bottom surface of the limit grooves 21; a plurality of support plates 23 are symmetrically fixed on the inner wall of the heat dissipation cavity 20; a mounting seat 24 which is plugged in and matched with the two opposite limit grooves 21 is fixed on the bottom of the battery cell 3; a plurality of second plug holes 25 are symmetrically provided on the surface of the mounting seat 24; a fixing frame 26 is fixed on the outer peripheral side surface of the protective cover 2; a plurality of plug rods 27 which are plugged in and matched with the corresponding first plug holes 22 and second plug holes 25 are evenly fixed on the bottom surface of the fixing frame 26.

[0049] A plurality of plug-in plates 28 are evenly fixed on one side of the base 1, and a plurality of slots 29 are evenly opened on the other opposite side thereof; a plug-in plate 28 on one base 1 is plugged into and matched with the slots 29 on the adjacent plug-in plate 28; a plurality of mounting holes 30 are opened on the surface of the fixing frame 26 and the base 1; the fixing frame 26 is fixedly connected to each base 1 by fastening bolts; a plurality of heat dissipation holes 31 are opened on both opposite sides of the protective cover 2.

[0050] A vertical plate 32 is symmetrically fixed to the bottom surface of the insulating ring 7; rubber plates 33 are symmetrically fixed to the two opposite sides of the vertical plate 32; a sealing top cover is fixed to the top of the protective cover 2 by fastening bolts; an extension plate 34 is symmetrically fixed to the side surface of the insulating ring 7; a sleeve 35 is fixed to the surface of the extension plate 34; a number of plug posts that are plugged into and matched with the corresponding sleeves 35 are fixed to the top of the inner part of the sealing top cover.

[0051] A connecting plate 45 is fixed to the inner wall of the annular insulating plate 17; a sleeve 46 is fixed through the surface of the connecting plate 45; a spiral groove 47 is opened on the inner wall of the sleeve 46; the lifting part 16 includes a lifting plate 48; a plurality of extension rods 49 are evenly fixed to the bottom surface of the lifting plate 48; ear rods 50 are fixed to the side surfaces of the extension rods 49; and a ball head 51 that slides with the spiral groove 47 is fixed to the end of the ear rod 50.

[0052] A screw 52 is fixed on the top of the lifting plate 48; a baffle 53 is fixed on the bottom of the protective cover 2; an electric push rod 54 is fixed on the top of the baffle 53; a rotating plate 55 is rotatably provided at the telescopic end of the electric push rod 54; a plurality of positioning holes 56 corresponding to the screws 52 are opened on the surface of the rotating plate 55; a fastening nut is threaded on the screw 52.

[0053] Working principle of the second embodiment:

[0054] By plugging the mounting base 24 at the bottom of each group of battery cells 3 into the two opposite limit grooves 21 on the base 1, at this time, the corresponding first jacks 22 and second jacks 25 are coaxially arranged, and after completing the plugging of the battery cells 3 in each group of bases 1, the plug plate 28 on the side of one group of bases 1 is inserted into the slot 29 on the side of the adjacent base 1. After completing the assembly of each group of bases 1, the protective cover 2 is placed from top to bottom, so that the plug rod 27 at the bottom of the protective cover 2 is inserted into the corresponding first jack 22 and second jack 25 in turn, and the fixing frame 26 at the bottom of the protective cover 2 is fixed to each group of bases 1 by fastening bolts, so as to complete the fixed connection of each group of battery cells 3, the base 1 and the protective cover 2, instead of the traditional method that each group of battery cells 3 needs to be fixed to the base 1 by fastening bolts, thereby improving the assembly efficiency of the battery cells 3.

[0055] After the protective cover 2 and the base 1 are fixed, the connecting part 6 is plugged into each group of battery cells 3, so that each group of positive conductive rings 13 is respectively sleeved on the corresponding positive conductive column 4, and each group of negative conductive rings 14 is respectively sleeved on the corresponding negative conductive column 5. At this time, the battery cells 3 are clamped between the rubber plates 33 on the bottom surfaces of adjacent insulating rings 7, further improving the stability of each group of battery cells 3.

[0056] Rotate the rotating plate 55 so that it rotates above each lifting plate 48, control the electric push rod 54 to descend, so that each group of positioning holes 56 is inserted into the screw rod 52 on the corresponding lifting plate 48, and each group of lifting plates 48 is fixed to the rotating plate 55 by tightening the nut.

[0057] After completing the fixation of each group of lifting parts 16 and the rotating plate 55, the sealing top cover is closed on the top of the protective cover 2. At this time, each group of plug posts at the top of the sealing top cover are inserted into the corresponding sleeves 35, which improves the stability of the connecting part 6, thereby further improving the stability of each group of battery cells 3. The sealing top cover is fixed to the protective cover 2 by bolts to complete the assembly.

[0058] For example 3, please refer to Figure 1-14 The third embodiment is improved as follows on the basis of the second embodiment. Specifically, a positive connecting column 57 is fixed to the side surface of the positive conductive ring 13 on the outermost insulating ring 7; a negative connecting column 36 is fixed to the side surface of the negative conductive ring 14 on the other outermost insulating ring 7; a positive conductive plug 37 and a negative conductive plug 38 are fixed to the ends of the positive connecting column 57 and the negative connecting column 36 respectively; a cylindrical insulating sleeve 39 is provided on the first conductive plate 11, the second conductive plate 12, the positive connecting column 57 and the negative connecting column 36; an annular insulating sleeve 40 is provided on the outer peripheral side of the positive conductive ring 13 and the negative conductive ring 14.

[0059] A plurality of negative pole sockets 41 for plugging and matching with the corresponding negative pole conductive plugs 38 are evenly fixed on one inner wall of the protective cover 2, and a plurality of positive pole sockets 42 for plugging and matching with the corresponding positive pole conductive plugs 37 are evenly fixed on the other opposite inner wall; positive pole terminals 43 and negative pole terminals 44 are fixed through the side surface of the protective cover 2 in sequence; each negative pole conductive plug 38 is connected in series through a cable and is electrically connected to the negative pole terminal 44; each positive pole conductive plug 37 is connected in series through a cable and is electrically connected to the positive pole terminal 43.

[0060] Working principle of the third embodiment:

[0061] After the protective cover 2 is fixed, each group of positive sockets 42 is inserted into the corresponding positive conductive plug 37, and each group of negative sockets 41 is inserted into the corresponding negative conductive plug 38. Each negative conductive plug 38 is connected in series through a cable and electrically connected to the negative terminal 44. Each positive conductive plug 37 is connected in series through a cable and electrically connected to the positive terminal 43. Each group of battery cells 3 on the same base 1 constitutes a lithium battery group. Adjacent lithium battery groups are connected in parallel, and each lithium battery group has high assembly efficiency.

[0062] During the discharge process of the lithium battery, one end of the second conductive rail 19 is tightly attached to the side of the first conductive block 9, and the other end of the second conductive rail 19 is detached from the second conductive plate 12 on one battery cell 3. The outer peripheral side of the second conductive rail 19 is in contact with the second conductive plate 12 on the adjacent battery cell 3. The first conductive block 9 is electrically connected to the second conductive plate 12 through a cable, and the second conductive plate 12 is connected to the positive conductive column 4. Therefore, the negative conductive column 5 on a group of battery cells 3 is connected to the positive conductive column 4 on the adjacent battery cell 3.

[0063] One end of the first conductive rail 18 is tightly fitted to the side of the second conductive block 10, and the outer peripheral side of the first conductive rail 18 is fitted and conductive with the first conductive plate 11 on the adjacent battery cell 3. The other end of the first conductive rail 18 is detached from the first conductive plate 11 on a battery cell 3. The second conductive block 10 is electrically connected to the first conductive plate 11 through a cable, and the first conductive plate 11 is sleeved and conductive with the negative conductive column 5. Therefore, the positive conductive column 4 on a group of battery cells 3 is connected to the negative conductive column 5 on the adjacent battery cell 3.

[0064] The positive conductive column 4 on one battery cell 3 is connected to the negative conductive column 5 on the adjacent battery cell 3, and the corresponding negative conductive column 5 is connected to the positive conductive column 4 on the adjacent battery cell 3, so that the battery cells 3 on the same base 1 are discharged in series (such as Figure 13-14 as shown).

[0065] The lithium battery is electrically connected to the vehicle control system. When the lithium battery needs to be charged, the vehicle system controls the electric push rod 54 to descend, thereby driving each group of lifting parts 16 to descend, so that each group of ball heads 51 slides in the corresponding spiral groove 47, thereby driving each group of conductive parts 15 to rotate synchronously, so that one end of the second conductive rail 19 is separated from the corresponding first conductive block 9, and at the same time, one end of the first conductive rail 18 is separated from the corresponding second conductive block 10. At this time, the first conductive plates 11 on the two adjacent battery cells 3 are connected through the second conductive rail 19, and the second conductive plates 12 on the two battery cells 3 are connected through the first conductive rail 18, so that the positive conductive column 4 of each group of battery cells 3 is connected to the positive conductive column 4 of the adjacent battery cell 3, and the corresponding negative conductive column 5 is connected to the negative conductive column 5 of the adjacent battery cell 3, so that the groups of battery cells 3 on the same base 1 are converted into a parallel connection mode, realizing parallel charging, avoiding the attenuation of the lithium battery, and at the same time, improving the performance of the lithium battery (such as Figure 11-12as shown).

[0066] During the above-mentioned parallel charging and series discharging processes, the positive conductive column 4 and the negative conductive column 5 on the same battery cell 3 are always not connected, and the connections between the positive conductive column 4 and the positive conductive column 4, the positive conductive column 4 and the negative conductive column 5, and the negative conductive column 5 and the negative conductive column 5 mentioned above are all series or parallel connections between two adjacent battery cells 3.

[0067] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0071] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A lithium battery cell connection assembly, comprising a plurality of plug-in mating bases (1) and a protective cover (2) fixed to the surface of each of the bases (1) by fastening bolts; characterized in that: A plurality of battery cells (3) are evenly inserted and arranged on the surface of the base (1); a positive electrode conductive column (4) and a negative electrode conductive column (5) are arranged on the top of the battery cells (3); A connecting portion (6) is sleeved between the battery cells (3) on the same base (1); the connecting portion (6) comprises a plurality of insulating rings (7); an annular groove (8) is provided on the inner circumferential side of the insulating ring (7); a first conductive block (9) is provided on the inner wall of the annular groove (8) near the inner top end thereof, and a second conductive block (10) is provided on the inner wall of the annular groove (8) near the inner bottom end thereof; Two first conductive plates (11) are symmetrically fixedly penetrated on the outer peripheral side surface of the insulating ring (7) near the inner bottom end of the annular groove (8), and two second conductive plates (12) are symmetrically fixedly penetrated on the outer peripheral side surface of the insulating ring (7) near the inner top end of the annular groove (8); a positive conductive ring (13) sleeved on the positive conductive column (4) is fixedly disposed at the end of the first conductive plate (11); a negative conductive ring (14) sleeved on the negative conductive column (5) is fixedly disposed at the end of the second conductive plate (12); the first conductive block (9) is electrically connected to the second conductive plate (12) via a cable; and the second conductive block (10) is electrically connected to the first conductive plate (11) via a cable; A conductive part (15) is rotatably arranged in the annular groove (8); a lifting part (16) is slidably arranged between the conductive parts (15); the conductive part (15) comprises an annular insulating plate (17) rotatably arranged in the annular groove (8); a first conductive rail (18) is fixed to the bottom of the annular insulating plate (17), and a second conductive rail (19) is fixed to the top thereof; A connecting plate (45) is fixed to the inner wall of the annular insulating plate (17); a sleeve (46) is fixed through the surface of the connecting plate (45); a spiral groove (47) is provided on the inner wall of the sleeve (46); the lifting portion (16) comprises a lifting plate (48); a plurality of extension rods (49) are evenly fixed to the bottom surface of the lifting plate (48); an ear rod (50) is fixed to the peripheral side of the extension rod (49); a ball head (51) that is slidably matched with the spiral groove (47) is fixed to the end of the ear rod (50); A screw rod (52) is fixed on the top of the lifting plate (48); a baffle plate (53) is fixed on the bottom surface of the protective cover (2); an electric push rod (54) is fixed on the top of the baffle plate (53); a rotating plate (55) is rotatably provided at the telescopic end of the electric push rod (54); a plurality of positioning holes (56) corresponding to the screw rods (52) are provided on the surface of the rotating plate (55); and a fastening nut is threadedly connected to the screw rod (52).

2. A lithium battery cell connection assembly according to claim 1, characterized in that: The base (1) has a heat dissipation cavity (20) on its top, and a plurality of limit grooves (21) are symmetrically provided on its top; a plurality of first insertion holes (22) are evenly provided on the inner bottom surface of the limit groove (21); and a plurality of support plates (23) are symmetrically fixed to the inner wall of the heat dissipation cavity (20); A mounting seat (24) is fixed at the bottom of the battery cell (3) and is plugged into two opposite limiting grooves (21); a plurality of second plug holes (25) are symmetrically provided on the surface of the mounting seat (24); a fixing frame (26) is fixed to the outer peripheral side of the protective cover (2); and a plurality of plug rods (27) are evenly fixed on the bottom surface of the fixing frame (26) and are plugged into the corresponding first plug holes (22) and second plug holes (25).

3. A lithium battery cell connection assembly according to claim 2, characterized in that: A plurality of plug plates (28) are evenly fixed on one side of the base (1), and a plurality of slots (29) are evenly opened on the other opposite side; a plug plate (28) on the base (1) is plugged into and matched with a slot (29) on an adjacent plug plate (28); The surfaces of the fixing frame (26) and the base (1) are both provided with a plurality of mounting holes (30); the fixing frame (26) and each base (1) are fixedly connected by fastening bolts; and the protective cover (2) is provided with a plurality of heat dissipation holes (31) on two opposite side surfaces.

4. A lithium battery cell connection assembly according to claim 3, characterized in that: A vertical plate (32) is symmetrically fixed to the bottom surface of the insulating ring (7); and rubber plates (33) are symmetrically fixed to two opposite side surfaces of the vertical plate (32); A sealing top cover is fixed to the top of the protective cover (2) by means of fastening bolts; an extension plate (34) is symmetrically fixed to the circumferential side of the insulating ring (7); a sleeve (35) is fixed to the surface of the extension plate (34); and a plurality of plug posts that are plugged into and matched with corresponding sleeves (35) are fixed to the top of the sealing top cover.

5. A lithium battery cell connection assembly according to claim 4, characterized in that: A positive electrode connecting column (57) is fixed to the side surface of the positive electrode conductive ring (13) on the outermost insulating ring (7); a negative electrode connecting column (36) is fixed to the side surface of the negative electrode conductive ring (14) on the other outermost insulating ring (7); and a positive electrode conductive plug (37) and a negative electrode conductive plug (38) are fixed to the ends of the positive electrode connecting column (57) and the negative electrode connecting column (36), respectively. The first conductive plate (11), the second conductive plate (12), the positive electrode connecting column (57), and the negative electrode connecting column (36) are all provided with a cylindrical insulating sleeve (39); and the outer peripheral side surfaces of the positive electrode conductive ring (13) and the negative electrode conductive ring (14) are all provided with an annular insulating sleeve (40).

6. A lithium battery cell connection assembly according to claim 5, characterized in that: A plurality of negative electrode sockets (41) that are plugged into and matched with corresponding negative electrode conductive plugs (38) are evenly fixed on one inner wall of the protective cover (2), and a plurality of positive electrode sockets (42) that are plugged into and matched with corresponding positive electrode conductive plugs (37) are evenly fixed on the other opposite inner wall; A positive electrode terminal (43) and a negative electrode terminal (44) are sequentially penetrated and fixed to the side surface of the protective cover (2); each of the negative electrode conductive plugs (38) is connected in series via a cable and is electrically connected to the negative electrode terminal (44); and each of the positive electrode conductive plugs (37) is connected in series via a cable and is electrically connected to the positive electrode terminal (43).

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