CN202282409U - Novel modular structure of power lithium battery unit - Google Patents

Abstract

The utility model discloses a novel modular structure of a power lithium battery unit, belonging to the field of batteries. The novel modular structure of the power lithium battery unit comprises a plurality of monomer batteries, bus bars, a pressure plate assembly, a self-locking jam nut and a battery bracket, wherein the monomer batteries are connected into a whole by means of the mutual combination of positioning dowel pins arranged on the battery bracket and clamping slots arranged corresponding to the positioning bolts; the positive polar lug and the negative polar lug of each monomer battery are respectively bent into an L shape to be attached onto a pressure plate, the bus bars are respectively arranged on the bent positive polar lug and the bent negative polar lug, fastening bolts and the self-lock jam nuts are arranged correspondingly on the pressure plate so as to connect the bus bars, the polar lugs and the pressure plate together, and thus, a pressure plate type battery unit connection structure is further formed. By means of a parallel connection manner, a plurality of battery units can constitute a battery module with larger capacity. The novel modular structure disclosed by the utility model has the advantages of modular property, simple structure, convenience in maintenance, low heating value, uniformity in heat radiation, reliability in connection and excellent high-current discharging performance.

Description

New type power lithium cells modular construction

Technical field

The utility model relates to a kind of dynamic lithium battery cellular construction, is specially adapted to the polymer new type power lithium cells modular construction of big capacity and heavy-current discharge.

Background technology

In recent years since polymer Li-ion battery to have operating temperature range wide, the high and low temperature performance is good, energy density per unit volume and weight specific energy are high; Good cycle; Advantage such as safe and reliable, therefore, more and more countries is used polymer Li-ion battery as the new forms of energy electrokinetic cell.

Though poly-lithium battery has the bright aquatic foods of its advantage as power source, its intrinsic weakness is that mechanical strength is bad, is extruded easily and punctures because shell is a plastic-aluminum packaging film; When receiving external force, easy generation is out of shape and is influenced its serviceability, possibly produce security incident when serious.Therefore, product must have safeguard procedures.

In the battery module of existing design; Fixed form to cell; A kind of way is: adopt double faced adhesive tape and insulating paper etc. fix and to isolate between the cell, this fixing and isolation method is concerning high capacity cell, and its fastness, thermal diffusivity, maintainability are all relatively poor; Be difficult to guarantee the mechanical strength of all batteries and the consistency of temperature, influence useful life.Another kind of way is directly to connect battery pole ear with bolt, when running into vibration during this battery is jolted in transit or works, as easy as rolling off a logly causes nut loosening or comes off, and influences the normal use of battery pack; Simultaneously, because the lug dead-soft can not well contact between the lug; The contact site is confined to the bolt head position, this connected mode, and contact area is little; It is big to connect resistance, and caloric value is big, influences the battery operate as normal.

As electrokinetic cell, load current at work is very big, reaches the operating current of kilo-ampere on the hundreds of, and traditional connected mode far can not meet the demands, and must seek new connected mode.

Therefore, in order to satisfy the power requirement, this just need a kind ofly connect reliably, caloric value is little, heat radiation is even, mechanical strength is good, battery altering is convenient, have the battery unit syndeton of large current discharging capability.

The utility model content

The purpose of the utility model is to overcome the deficiency of prior art, and a kind of simple in structure, easy to maintenance, good heat dissipation is provided, and switching performance is reliable, has the unit-modularized structure of new polymers dynamic lithium battery of large current discharging capability.

A kind of new type power lithium cells modular construction; Comprise some cells; Said cell top is installed with anode ear, negative electrode lug, it is characterized in that: the busbar with the positive and negative lug of a plurality of cells connects together is followed successively by Anchor plate kit, lug, busbar, nut above cell; Said cell is placed in the battery bracket; Turn up and corresponding fixed card slot or the location pin that is provided with mutual assembling on turning up said battery bracket four sides; Through fixed card slot or location pin some cells are fused; Said Anchor plate kit is made up of pressing plate and fastening bolt, and the corresponding fastening bolt that offers passes and uses via hole on set anode ear and the negative electrode lug.

Further, nut is the self-locking stop nut.

Further, said single battery pole ears groove and base thereof are sealed by resin glue admittedly.

Further, said busbar is L shaped structure.

Further, said pressing plate bottom offers a groove, and correspondence is provided with many fixing fastening bolts of using, and the head of the set band handle of said fastening bolt shape is welded in the groove on the pressing plate.

Further, said battery bracket by battery bracket at the bottom of, at least one battery bracket, battery bracket lid constitutes; Four sides are all established to fix and are used draw-in groove at the bottom of the said battery bracket, and the bottom surface is provided with louvre, and three side tops also are provided with thermovent; Four sides are all established and are fixed with draw-in groove and location pin in the said battery bracket, and the bottom surface is provided with a plurality of louvres, and three side tops also are provided with thermovent; Battery bracket lid is the plane, and four side correspondences are provided with the location pin, are installed with louvre on the bottom surface, at the bottom of said cell, the battery bracket, in the battery bracket, battery bracket lid combination with one another forms an integral body.

The utility model has the advantages that:

1) the presser type syndeton that is made up of busbar, battery pole ear, pressing plate has that to connect resistance little, and contact area is big, good heavy current;

2) adopt the cell that solidifies through the resin sealing, under the prerequisite that does not influence fail safe, improved the mechanical strength of element cell and the consistency of overall dimension;

3) adjacent two cells between the heat dissipation channel of fixed space is arranged, realized Homogeneouslly-radiating;

4) the locking vibration proof performance of battery is good;

5) the battery dismounting is simple, easy to maintenance.

Description of drawings

Fig. 1 is a polymer lithium cell outline drawing;

Fig. 2 is the solid glue outline drawing of polymer lithium cell;

Fig. 3 battery bracket lid structural representation;

Fig. 4 is a structural representation in the battery bracket;

Fig. 5 is a battery bracket bottom structure sketch map;

Fig. 6 Anchor plate kit structural representation;

Fig. 7 bus-bar structure sketch map;

Fig. 8 battery bracket assembling sequence sketch map;

Fig. 9 single battery pole ears syndeton sketch map;

Figure 10 battery unit structure sketch map;

Diagram: the 1-cell, 2-battery bracket lid, in the 3-battery bracket, at the bottom of the 4-battery bracket, 5-Anchor plate kit, 6-busbar, 7-self-locking stop nut

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified:

As shown in Figure 1, anode ear 1a, negative electrode lug 1b relevant position (1c, 1d) at cell 1 pass the hole with special-purpose punching anchor clamps punching out set bolt;

As shown in Figure 2; Cell 1 in this example is placed in the special mould; At 1 C of cell, afterbody D carries out embedding with resin, treats to form certain mechanical strength behind the resin solidification; The embedding purpose is not influence under the prerequisite of battery security, improves the mechanical strength of cell and the consistency of overall dimension;

Like Fig. 3, like Fig. 4, shown in Figure 5, the material of said battery bracket (2,3,4) is the fire retardant plastic material, adopts the injection moulding processing technology to process; The bottom surface is equipped with a plurality of circles and square louvre, the space of double as heat radiation and cell expansion, and set thermovent 3c, thermovent 4e help quickening the heat dissipation of battery;

As shown in Figure 6, Anchor plate kit 5 is made up of pressing plate 5a and fastening bolt 5b, and the pressing plate material adopts copper coin, process through Sheet Metal Forming Technology, and, set groove 5c helps saving installing space; Said fastening bolt 5b adopts welding procedure to be welded on the pressing plate 5a steadiness that helps connecting;

As shown in Figure 7, the material of said busbar 6 is a copper, has good conductivity, forms through the pressing and bending processes.

As shown in Figure 9ly be combined into the presser type syndeton by busbar 6, battery pole ear 1a (1b), Anchor plate kit 5; Because the battery pole ear 1a (1b) of this structure and busbar 6 are not to contact but face contacts; It is big to have contact area, according to the law of resistance, and square relation that is inversely proportional to of resistance and conductive area; So it is little to connect resistance, caloric value is also just few; Simultaneously, also can further increase conductive cross-sectional area through the gauge that increases busbar, because of the increase of conductive cross-sectional area, the nominal discharge current value increases thereupon, so, this structure good heavy current;

The combined method of element cell:

1) cell 1 correspondence that will the consolidate glue battery bracket (end) 4 of packing into;

2) will pack in battery bracket (end) 4 and the battery bracket of cell) 3 combinations; Put into a cell 1 then; Again with a battery bracket (in) 3 with above-mentioned battery bracket in 3) assemble, put into a cell 1 after the completion to be assembled again, cover said battery bracket (lid) 2; Need during assembling the set location of battery bracket pin 3a is inserted respectively among the corresponding set draw-in groove 4a (3b), assemble sequence is according to shown in Figure 8;

3) by shown in Figure 9, the positive and negative lug of cell 1 is separated to both sides respectively, put into said Anchor plate kit 5; (1a, 1b) is bent into " L " shape with said both positive and negative polarity lug, is attached on the pressing plate 5a surface;

4), said busbar 6 is imported on the set bolt 5b of Anchor plate kit 5 correspondences by shown in Figure 9;

5) lock said self-locking stop nut 7.

Although in the foregoing description the utility model is shown and is described; But those skilled in the art should be appreciated that; Under the prerequisite that does not break away from the utility model general plotting, modification and remodeling to the utility model is made should belong within the utility model protection range.

Claims (6)

1. new type power lithium cells modular construction; Comprise some cells; Said cell top is installed with anode ear, negative electrode lug, it is characterized in that: the busbar with the positive and negative lug of a plurality of cells connects together is followed successively by Anchor plate kit, lug, busbar, nut above cell; Said cell is placed in the battery bracket; Turn up and corresponding fixed card slot or the location pin that is provided with mutual assembling on turning up said battery bracket four sides; Through fixed card slot or dowel some cells are fused;

Said Anchor plate kit is made up of pressing plate and fastening bolt, and the corresponding fastening bolt that offers passes and uses via hole on set anode ear and the negative electrode lug.

2. a kind of new type power lithium cells modular construction according to claim 1, it is characterized in that: nut is the self-locking stop nut.

3. a kind of new type power lithium cells modular construction according to claim 1, it is characterized in that: said single battery pole ears groove and base thereof are sealed by resin glue admittedly.

4. a kind of new type power lithium cells modular construction according to claim 1, it is characterized in that: said busbar is L shaped structure.

5. a kind of new type power lithium cells modular construction according to claim 1; It is characterized in that: said pressing plate bottom offers a groove; Correspondence is provided with many fixing fastening bolts of using, and the head of the set band handle of said fastening bolt shape is welded in the groove on the pressing plate.

6. a kind of new type power lithium cells modular construction according to claim 1 is characterized in that: said battery bracket by battery bracket at the bottom of, at least one battery bracket, battery bracket lid constitutes; Four sides are all established to fix and are used draw-in groove at the bottom of the said battery bracket, and the bottom surface is provided with louvre, and three side tops also are provided with thermovent; Four sides are all established and are fixed with draw-in groove and location pin in the said battery bracket, and the bottom surface is provided with a plurality of louvres, and three side tops also are provided with thermovent; Battery bracket lid is the plane, and four side correspondences are provided with the location pin, are installed with louvre on the bottom surface, at the bottom of said cell, the battery bracket, in the battery bracket, battery bracket lid combination with one another forms an integral body.

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