CN202145474U

CN202145474U - Li-ion battery pack fixing device

Info

Publication number: CN202145474U
Application number: CN201120261794U
Authority: CN
Inventors: 刘晓冬; 柯寒冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-02-15
Anticipated expiration: 2021-07-22

Abstract

The utility model relates to a Li-ion battery pack fixing device, which comprises a bracket and a discoid insulating outer housing, wherein, the bracket is provided with a center hole; the discoid insulating outer housing is arranged outside the bracket, is also provided with the center hole, and comprises a left housing and a right housing; axial grooves are formed on the outer edge of the bracket, and axial ribs formed on the side wall of the insulating outer housing can be embedded in the axial grooves; the left housing and the right housing are fixedly connected through bolts penetrating through the ribs and fixing piles arranged around the center hole; the fixing piles are also used for fixing a battery guard plate; and elastic gaskets are arranged on the fixing piles so as to ensure the axial stability of the battery guard plate. The Li-ion battery pack fixing device with compact structure facilitates the heat dissipation of a battery pack, can effectively improve the stability and the safety of the battery pack and the battery guard plate, and prolongs the service life of the battery pack.

Description

A kind of lithium battery group fixture

Technical field

The utility model relates to a kind of lithium battery group fixture.

Background technology

Lithium battery is widely applied in all kinds of digital products such as mobile phone, computer owing to have advantages such as in light weight, that volume is little, capacitance is big, charging rate is fast.With lithium ion battery replace Heavy Weight, charging lead-acid battery consuming time to be used for big capacity such as electric bicycle, the high-tension vehicles receive insider's common concern.Need when using so a plurality of battery unit combinations at first will be solved the fixation problem of a plurality of battery units.Existing battery pack fixture adopts single support to fix, and has problems such as battery pack anti-vibration ability, steadiness be bad, causes battery to reduce useful life.

Chinese patent CN101752538A is directed against the lithium battery pack support that the problems referred to above disclose a kind of flat structure, is propped up by two battery pack outriggers, two battery pack intermediate supports and baffle to be configured to.This support has solved the problem of battery anti-vibration ability, has the advantage of support, protection battery and baffle.But it does not consider can heating to expand after battery component discharges and recharges, and thermal diffusivity is relatively poor between the battery unit, and has set up the baffle support, and structure is complicated.

Chinese patent CN201194240Y discloses a kind of battery pack and has shelved; Its structure include one have an accommodation space with provide battery insert among empty capsid, the relative dual-side edge of this hollow housing is provided with a winding raised line and a gomphosis groove, four corners of end are provided with fixation kit under the hollow housing; This battery pack mount structure is simple; Easy to assembly, and the heat between the ability blocker unit battery, but it does not relate to the problem that need install baffle when battery pack is used additional; And baffle damages, and can cause whole battery group not use.

The utility model content

The purpose of the utility model is to provide a kind of compact conformation, helps the battery pack heat radiation, can improves battery pack and baffle stability and fail safe, prolongs the battery lithium battery group fixture in useful life.

The above-mentioned technical purpose of the utility model is achieved through following technical scheme: a kind of lithium battery group fixture, and it is characterized in that: it comprises the support that is provided with centre bore, is located at the plate-like insulation crust that support is provided with centre bore outward equally; Said support outward flange is provided with axial notch; Said insulation crust sidewall is provided with to projecting inward axial raised line; Said groove and said raised line are chimeric; Said insulation crust is made up of left shell and right shell, and said left shell passes the screw that is provided with in the said raised line with right shell through screw and is connected; Be provided with around said left shell and the right shell centre bore from the inwardly protruded many spud piles of trying to get to the heart of a matter in order at self-contained battery group baffle radially, said left shell passes the fixing hole of being located in the said spud pile through screw simultaneously with right shell and is connected; Said spud pile is provided with elastic washer, to guarantee that the battery pack protection plate is not axially can double swerve.

Further, also be provided with fairlead in said left shell or the right shell, be used for the baffle lead-in wire and pass, it is safe and reliable to guarantee to go between.

Said internal stent is provided with location hole, is used to place battery unit, and its quantity can be a plurality of; Decide according to battery unit quantity, its arrangement mode and battery unit combination mode is consistent, location hole is set after; Adjacent two battery units do not contact, and heat radiation is good when making battery charging and discharging.Further, said location hole one side is provided with catch, prevents that battery unit is at axial motion even fall.

Preferred as the utility model, said support madial wall also is provided with the depression that supplies lead-in wire to pass, and lead-in wire is drawn through this depression, and the influence that can avoid going between because of external force damages or short circuit.

The outstanding advantage and the beneficial effect of the utility model are:

1, uses the support self-contained battery, use insulation crust and support chimeric again, guaranteed the firm of support; Fixing hole double fixed in screw in the raised line of the left and right shell of insulation crust through lateral wall and the inner many spud piles has further improved the stability of battery pack, and insulation crust also has waterproof, insulation function and effectively protected battery pack;

2, the setting of the elastic washer of the left and right shell of insulation crust on try to get to the heart of a matter inwardly protruded many spud piles and the spud pile can be guaranteed the steadiness that the battery pack protection plate is radial and axial, has improved its anti-vibration resistance and fail safe;

3, the support madial wall is provided with the fairlead setting in depression and left shell or the right shell, can avoid lead-in wire gone between by external force, thereby improve the fail safe of battery pack;

4, be provided with location hole in the utility model support, can be according to the quantity of battery unit and arrangement mode design, this location hole makes that battery unit is firm and has improved the heat dispersion of battery pack;

5, not only self-contained battery but also fixing baffle of the utility model insulation crust, use insulation crust after, battery can not expose outside; Have disguise, this structural design can make battery pack, support, insulation crust become one compact conformation; Attractive in appearance; This support arm and insulation crust are equipped with centre bore, make things convenient for battery to be installed on other parts, such as wheel hub.

Description of drawings

Fig. 1 is the utility model type example structure exploded view.

Fig. 2 is the utility model embodiment supporting structure sketch map.

Fig. 3 a, 3b are the utility model embodiment left side shell, right shell structure sketch map.

Among the figure, 1 is support, and 11 is groove, and 12 is location hole, and 13 is catch, and 14 are depression, and 21 is raised line, and 22 is left shell, and 23 is right shell, and 24 is spud pile, and 25 is fairlead, and 3 is battery pack, and 4 is screw.

Embodiment

Below in conjunction with embodiment the utility model is done further explain.

As shown in Figure 1; The 18650 type lithium battery groups 3 of using 18650 type lithium cells to form with ten and ten string modes; Its lithium battery group 3 fixtures comprise the support 1 that is provided with centre bore; Be located at the support 1 outer plate-like insulation crust that is provided with centre bore equally, insulation crust is made up of with right shell 23 left shell 22, and both are fixing through screw 4.Compact overall structure, aesthetic in appearance, centre bore setting makes things convenient for battery to be installed on other parts, particularly wheel hub.

As shown in Figure 2, for being positioned at the support that is provided with centre bore 1 of battery pack 3 one sides, the support 1 of battery pack 3 both sides is and is symmetrical set among the figure, and structure is identical, is convenient to adopt the Mould Machining manufacturing.Support 1 adopts ten and ten strings identical with battery unit combination mode to arrange by 30 location holes 12 and forms, and battery unit places location hole 12, and certain distance is spaced between the battery unit in each location hole 12; So battery pack 3 thermal diffusivities are good; At least be provided with a catch 13 on the location hole 12, can prevent battery unit, thereby reach the purpose of self-contained battery unit at axial motion; Support 1 outward flange is provided with 6 axial notches 11; In order to be provided with to projecting inward six roots of sensation raised line 21 chimericly with the insulation crust sidewall, make that support 1 is fixed, support 1 madial wall also is provided with the depression 14 that supplies lead-in wire to pass; Feasible lead-in wire can not receive the influence of external force, thereby has improved the fail safe of battery.

Like Fig. 3 a, shown in the 3b, be respectively left shell 22 and right shell 23 among the figure, both pass the screw that is provided with in the set six roots of sensation raised line 21 of sidewall through screw and the fixing hole be located at from 4 spud piles 24 of inwardly protruding of trying to get to the heart of a matter connects.Left and right shell has all carried out fastening from inside to outside, has effectively prevented to cause because of concuss the dislocation of fixture, thereby has improved the steadiness of battery.Right shell 23 also is provided with fairlead 25, is used for the baffle lead-in wire and passes, and it is safe and reliable to guarantee to go between, and wherein spud pile 24 also is used for radially fixedly baffle, and spud pile 24 is provided with elastic washer, guarantees that further baffle is at axial steadiness.It is thus clear that it is the purpose of self-contained battery group 3 that insulation crust has not only played fixed support 1; Also have the fixedly effect of baffle, in addition, it also has insulation, water-proof function; Farthest improve the stability and the fail safe of battery pack 3, thereby prolonged battery useful life.

This specific embodiment only is the explanation to the utility model; It is not the restriction to utility model; Those skilled in the art can make any modification to present embodiment as required after reading this specification, but as long as in the claim scope of the utility model, all receive the protection of Patent Law.

Claims

1. lithium battery group fixture, it is characterized in that: it comprises the support (1) that is provided with centre bore, is located at the outer plate-like insulation crust that is provided with centre bore equally of support (1); Said support (1) outward flange is provided with axial notch (11); Said insulation crust sidewall is provided with to projecting inward axial raised line (21); Said groove (11) is chimeric with said raised line (21); Said insulation crust is made up of left shell (22) and right shell (23), and said left shell (22) passes the screw that is provided with in the said raised line (21) with right shell (23) through screw (4) and is connected; Be provided with from the inwardly protruded many spud piles (24) of trying to get to the heart of a matter around said left shell (22) and right shell (23) centre bore, said left shell (22) passes the fixing hole of being located in the said spud pile (24) through screw (4) simultaneously with right shell (23) and is connected; Said spud pile (24) is provided with elastic washer.

2. a kind of lithium battery group fixture according to claim 1 is characterized in that also being provided with fairlead (25) in said left shell (22) or the right shell (23).

3. a kind of lithium battery group fixture according to claim 1 and 2 is characterized in that: said support (1) inside is provided with location hole (12), and said location hole (12) one sides are provided with catch (13).

4. a kind of lithium battery group fixture according to claim 3 is characterized in that: said support (1) madial wall also is provided with the depression (14) that supplies lead-in wire to pass through.