CN102130310B

CN102130310B - Battery and battery pack

Info

Publication number: CN102130310B
Application number: CN201110032586.6A
Authority: CN
Inventors: 王为希
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-28
Filing date: 2011-01-28
Publication date: 2014-04-30
Anticipated expiration: 2031-01-28
Also published as: CN103268922B; CN103268922A; CN102130310A

Abstract

The invention relates to a battery, which comprises end covers, a housing, an electric core, polar ears, polar columns and conductive strips, wherein the housing comprises at least one port, and the ports are sealed by the end covers with through holes; the electric core is arranged in the housing, the electric core is connected with the polar ears, the polar ears are positioned in the housing, the polar ears are connected with the polar columns, the polar columns extend out of the housing through the through holes of the end covers, and the outer parts of the polar columns are connected with the conductive strips; and the housing is cylindrical, and heat radiation convex ribs are formed on the outer wall of the housing. The invention further discloses a battery pack, which is assembled by a plurality of the batteries through modular support plates, and the through holes for mounting the batteries are formed on the modular support plates. The battery has the advantages of great heat radiation effect, good sealing property, high safety, long service life, waterproof and dustproof properties, assembling is simple assemble, low cost and the like.

Description

A kind of battery and battery pack

Technical field

The invention belongs to battery manufacture technical field.

Background technology

Battery is electric motor car " heart ", and its performance directly has influence on the Performance and quality of electric motor car.There is following defect in the battery of prior art:

One, radiating effect is one of important indicator of evaluating battery performance.Current battery container adopts cube structure, and the battery of this structure exists the poor defect of radiating effect, and is also unfavorable for arranging assembling in groups.

Two, sealing property is also one of the key technical indexes of battery, the battery of poor sealing performance, and its fail safe is low, useful life is short.The structure of battery end is larger on the sealing property impact of battery.But, the end construction of existing battery sealing poor aspect Shortcomings part also.

Three, the positive pole of single battery, negative pole are drawn from the one or both ends of housing, and its end exposed part mainly comprises pole, bus etc., multiple batteries in groups after again in shell of overall outer cover.The defect that this structure exists is: because battery end is without special protection part; the parts such as bus, pole are easily by pollutions such as aqueous vapor, dusts, thereby affect the normal work of battery, reduce its useful life; when serious, can cause the phenomenons such as battery short circuit, misoperation.

Four, as the battery pack of electric motor car power source generally by several batteries by assembling, several batteries, in assembling process, need to adopt special machine to complete.There are some defects in assembled battery process at present: as, battery assembling is wasted time and energy; After battery dismounting, cannot again assemble, thus this battery just scrapped, waste resource; Need to configure special machine, increase the cost of assembling, etc.

Therefore, be necessary existing battery to carry out improvement and bring new ideas, to overcome above-mentioned defect.

Summary of the invention

The invention discloses a kind of battery, it solves the above-mentioned technical problem that prior art exists, and battery of the present invention has excellent in heat dissipation effect, good airproof performance, safe, long service life, water proof and dust proof, simple and easy and low cost and other advantages in groups.

For achieving the above object, the present invention takes following technical scheme: a kind of battery, comprise end cap, housing, battery core, lug, pole, bus, and housing at least forms a port, and port is sealed by the end cap that has through hole; The in-built battery core of housing, battery core is connected with lug, and lug is in housing, and lug is connected with pole, and pole stretches out outside housing by the through hole of end cap, and pole outside is connected with bus; It is characterized in that: housing is cylindrical, housing outer wall forms heat radiation convex tendon.

Preferably, housing port edge forms annular breach, and this annular breach embeds described end cap, is encased inside a sealing ring between end cap and housing; The port part outer wall of the housing screw-cap that spins, screw-cap compresses end cap and housing; Between end cap and pole, be encased inside a sealing shroud.

Preferably, sealing shroud encases end cap to two sides turnover near the surfaces externally and internally of through hole; Described pole is one-body molded by three sections, comprises in-flanges, stage casing, outwardly projecting portion, the stretch through stage casing of pole of the through hole of described end cap, and the outer wall in pole stage casing touches mutually with sealing shroud; The in-flanges of pole touches mutually with the inner surface portion of sealing shroud in end cap; The outer wall in pole stage casing is spirally connected locking nut and itself and end cap is compressed, and nut touches mutually with the outer surface portion of sealing shroud in end cap.

Preferably, the port part outer wall cover of housing has and welds a fillet of screw; End cap screws by nut and the fillet of screw and end cap is pressed in to the port edge of housing, and the shell end outer wall contacting with end cap is inserted in a sealing ring.

Preferably, housing and end cap welding, be encased inside a sealing shroud between the through hole of described end cap and pole.

Preferably, port cover cap one seal rubber sleeve of housing, the seal rubber sleeve outer wall contacting with housing is inserted in a spring coil, and seal rubber sleeve is by the component cover of battery port in the inner.

Preferably, end cap has the through hole that pastes weldering safety diaphragm, and weldering safety diaphragm is pasted in this through hole of end cap.

Preferably, housing forms two-port, and described battery is drawn respectively positive pole, negative pole from the two ends of housing.

The invention also discloses a kind of battery pack, it is assembled by module support plate by multiple aforementioned batteries, and described module support plate has the through hole that battery is installed.

Preferably, module support plate edge forms groove; If a contiguous block, this contiguous block form two with the suitable connecting portion of the groove of described module support plate, while assembling two module support plates, two connecting portions of described contiguous block insert respectively the groove of two module support plates.

Battery of the present invention has excellent in heat dissipation effect, good airproof performance, safe, long service life, water proof and dust proof, simple and easy and low cost and other advantages in groups.

Accompanying drawing explanation

Fig. 1 is the axial view of embodiment 1 battery container.

Fig. 2 is the cross-sectional view of housing.

Fig. 3 is housing cutaway view vertically.

Fig. 4 is the A portion enlarged drawing of Fig. 3.

Fig. 5 is a kind of layout plan of battery in groups time.

Fig. 6 is the wind direction trend graph of Fig. 5 battery pack.

Fig. 7 is the another kind of layout plan of battery in groups time.

Fig. 8 is the axial cutaway view of embodiment 2 batteries.

Fig. 9 is the B portion enlarged drawing of Fig. 8.

Figure 10 is the axial view of housing.

Figure 11 is end cover structure figure.

Figure 12 is the local structural graph of embodiment 3.

Figure 13 is the axial cutaway view of embodiment 4 batteries.

Figure 14 is the C portion enlarged drawing of Figure 13.

Figure 15 is end cover structure figure.

Figure 16 is the axial view of housing.

Figure 17 is one end axial view of embodiment 5 battery containers.

Figure 18 is the axial cutaway view of embodiment 5 batteries.

Figure 19 is the D portion enlarged drawing of Figure 18.

The battery pack that Figure 20 is comprised of several embodiment 5 batteries.

Figure 21 is the local structural graph of embodiment 6 batteries.

Figure 22 is the local structural graph of embodiment 7 batteries.

Figure 23 is the local structural graph of embodiment 8 batteries.

Figure 24 is embodiment 9 module support plate structure charts.

Figure 25 is the A-A cutaway view of Figure 24.

Figure 26 is the B-B cutaway view of Figure 24.

Figure 27 is the vertical view while being assembled into battery pack.

Figure 28 is the ground plan while being assembled into battery pack.

Figure 29 is connecting block structure schematic diagram.

Embodiment

Below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated.

Embodiment 1: as Figure 1-4, battery comprises housing 1, battery core 2, and housing 1 is cylindrical, the in-built battery core 2 of housing 1.The two ends of housing 1 all form opening, draw respectively positive pole, the negative pole of battery, and the structure at both ends is identical or symmetrical, below an end structure are wherein explained.

The opening of housing is by end cap 3 cappings, and the middle part of end cap 3, through pole 4, is sealed and matched between the two.Pole 4 inner sides are connected with battery core 2 by lug 5, and pole 4 is bolted with lug 5, and the outside of pole 4 screws by nut 6 and end cap 3.Pole 4 outer ends also connect bus 8 by nut 7.

The both ends of housing 1 form an annular breach 11 along inwall respectively, and it is for rabbeting and the end cap that is sealed and matched.The outer wall of housing 1, along the uniform heat radiation convex tendon 12 of short transverse, strengthens radiating effect.

When Fig. 5 has shown that battery in groups, each battery is 2X 7 to be arranged, Fig. 6 has shown trend when wind blows towards battery pack, and it takes away the heat that battery distributes.

When Fig. 7 has shown that battery in groups, each battery is 2X 7 to be arranged, but is staggered between two row batteries.

Housing adopts columniform slim-lined construction, and forms heat radiation convex tendon in its outer wall, and battery is easily dispelled the heat; By adjusting the length of battery, can change the capacity of battery; The volume of this battery case structure is smaller (180-200Wh/L) comparatively speaking, and weight is also light; It is also convenient in groups, and the structure being arranged side by side is applicable to being installed on electric coach.

Embodiment 2: as shown in Fig. 8-11, battery comprises housing 1, and housing 1 is cylindrical, the in-built battery core 2 of housing 1, an interior stay tube 3 is supported along axis direction in battery core 2 middle parts.The two ends of housing 1 all form opening, draw respectively positive pole, the negative pole of battery, and the structure at battery both ends is identical or symmetrical, below anticathode structure described in detail.

The end of housing 1 forms an annular breach 1-1 along inwall, and it is for the use of the end cap 12 that is sealed and matched.The outer wall of housing 1, along the uniform heat radiation convex tendon of short transverse 1-2, easily dispels the heat housing.

End cap 12 is made by a circular aluminum alloy, and the circumferential periphery of end cap 12 is along sheathed insulated enclosure circle 8, and sealing ring 8 is two sides turnover and encase the end cap upper and lower surface near circumferential edge edge up and down also.The annular breach 1-1 of shell end embeds the end cap 12 with sealing ring 8, and both contact positions are sealed and matched.The end outer wall of housing 1 forms screw thread, and the screw-cap 15 that spins, and screw-cap 15 compresses upper surface and be surrounded by the end cap 12 of sealing ring 8, and end cap 12 and housing 1 are closely cooperated.Between screw-cap 15 and sealing ring 8, be also encased inside annular gasket 14, further to strengthen the sealing of contact site.

End cap 12 middle parts have through hole 12-1, and this through hole is used for the pole that stretches through.The edge outsourcing insulated enclosure cover 7 of the middle through-hole 12-1 of end cap, insulated enclosure cover 7 also upwards turns down below and end cap 12 is encased near the surfaces externally and internally of middle through-hole.

End cap 12 also has two arc-shaped through-holes, and referring to Figure 11, two arc-shaped through-holes are symmetrical to be laid, and weldering one safety diaphragm 13 is pasted at arc-shaped through-hole place.When inside battery gas acquires a certain degree, the safety diaphragm 13 on its end cap can be flicked, and emits inside battery gas.Certainly, safety diaphragm can paste one of weldering, three or more individual as required, and it also can adopt other shape.

It is lug 4 that the end face connection negative pole of battery core 2 confluxes, and negative pole confluxes 4 in housing 1.

Pole 6 is divided into three sections, comprises in-flanges 6-1, stage casing 6-2, outwardly projecting portion 6-3, and the external diameter of in-flanges 6-1 is greater than the external diameter of stage casing 6-2, and the external diameter of stage casing 6-2 is greater than the external diameter of outwardly projecting portion 6-3, three in one moulding.The middle through-hole 12-1 of the external diameter of stage casing 6-2 and end cap 12 matches, and stage casing 6-2 also forms external screw thread.The middle through-hole 12-1 of end cap 12 stretch through and the be sealed and matched stage casing 6-2 of negative pole pole 6, the outer wall of pole stage casing 6-2 and the through-hole section of insulated enclosure cover 7 in end cap are touched mutually and compress.The inner side of pole 6 and negative pole conflux and 4 touch mutually, and are confluxed and 4 be connected by conflux hold-down bolt 5 and negative pole.

The in-flanges 6-1 of pole and the inner surface portion phase-splitting of insulated enclosure cover 7 in end cap are touched and are compressed.

The external screw thread of pole stage casing 6-2 is screwed into pole locking nut 9 and itself and end cap 12 is compressed, and nut 9 touches mutually and compresses with the outer surface portion of insulated enclosure cover 7 in end cap.

The outwardly projecting portion 6-3 of pole 6 is outside housing 1, and it forms an inner hexagonal hole 6-2, and during installation, this hole is used for locating pole 6, prevents its rotation.The outwardly projecting portion 6-3 connection of pole 6 is stacked by multi-disc the bus 10 forming, and bus 10 is pressed in outwardly projecting portion 6-3 by negative pole clamp nut 11.

The battery other end is anodal, and anode structure is identical with negative pole or symmetrical, can, with reference to foregoing, no longer describe in detail.

In the present embodiment, sealing shroud/circle is inserted in the contact position of the end cap of battery and housing, end cap and pole, has strengthened the sealing of battery end, has improved fail safe and the useful life of battery.

Embodiment 3: as shown in figure 12, the open end cover of housing 1 has the fillet of screw 18, the fillet of screw 18 welds with the outer wall of housing 1 weld part 19 that forms a border.

The external diameter of housing 1 port is less than the external diameter of end cap 12, the external diameter of the external diameter of end cap 12 and the fillet of screw 18 is corresponding, the port cap upper end cover 12 of housing 1, then screw and end cap 12 fixed to the sheathed sealing ring 16 of shell end outer wall contacting with end cap 12 by nut 17 and the fillet of screw 18.

Other content of the present embodiment can reference example 2.

Embodiment 4: as shown in Figure 13-16, battery comprises that housing 1, battery core 2, positive pole conflux, negative pole confluxes 4, Positive Poles, negative pole pole 6, end cap 12, bus 10, it is elongated cylindrical that housing 1 is, the in-built battery core 2 of housing 1, and an interior stay tube 3 is supported along axis direction in battery core 2 middle parts.The two ends of housing 1 all form opening, draw respectively positive pole, the negative pole of battery.The edge, both ends of housing 1 forms an annular breach 1-1 along inwall respectively, and it is for rabbeting and the end cap that is sealed and matched.The outer wall of housing 1 is along the uniform heat radiation convex tendon of short transverse 1-2, to strengthen the radiating effect of housing.

Battery both ends are respectively anodal, negative pole, and the structure at both ends is identical or symmetrical, below the structure of anticathode described in detail.

It is lug 4 that one end face connection negative pole of battery core 2 confluxes, and negative pole confluxes 4 in housing 1.

The end loops v notch v 1-1 of housing 1 embeds circular Aluminum Alloy Cover 12, and the end face of end cap 12 outer surfaces and housing 1 maintains an equal level.End cap 12 middle parts have through hole 12-1, and this through hole is used for the pole that stretches through.On end cap 12, also have another arc-shaped through-hole, the safety diaphragm 13 that this arc-shaped through-hole place subsides weldering shape, size match.When inside battery gas acquires a certain degree, the safety diaphragm 13 on its end cap can be flicked, and emits inside battery gas.Certainly, safety diaphragm can paste two of welderings, three or more individual as required, and shape also can be selected arbitrarily.

The contact site of the edge of end cap 12 and housing 1 welds and the weld part 8 of formation one border.

The middle through-hole 12-1 edge outsourcing insulated enclosure cover 7 of end cap 12, insulated enclosure cover 7 also turns down outward up and down and end cap 12 is encased near the surfaces externally and internally of middle through-hole.

Pole 6 is divided into three sections, comprises in-flanges 6-1, stage casing 6-2, outwardly projecting portion 6-3, and the middle through-hole 12-1 of the profile of stage casing 6-2 and end cap 12 matches, and the inner side of stage casing 6-2 forms in-flanges 6-1 to turning up, the lateral evagination of stage casing 6-2 and form outwardly projecting portion 6-3.The stretch through stage casing 6-2 of negative pole pole 6 of the middle through-hole 12-1 of end cap 12, confluxed and 4 be connected by conflux hold-down bolt 5 and negative pole in the inner side of pole 6, the lateral surface of pole stage casing 6-2, the in-flanges 6-1 of pole respectively with insulated enclosure cover 7 through-hole section in end cap, inner surface portion touch mutually and compress.

6-2 outside portion, pole stage casing is screwed into pole locking nut 9 itself and end cap 12 is compressed, and nut 9 touches mutually and compresses with the outer surface portion of insulated enclosure cover 7 in end cap.

The outwardly projecting portion 6-3 of pole 6 also forms an inner hexagonal hole 6-2, and during installation, this hole is used for locating pole 6, prevents its rotation.Outwardly projecting portion 6-3 connection is stacked by multi-disc the bus 10 forming, and bus 10 is pressed in the outwardly projecting portion 6-3 of pole 6 by negative pole clamp nut 11.

The battery other end is anodal, and anode structure is identical with negative pole or symmetrical, with reference to foregoing, no longer describes in detail.

In the present embodiment, between the end cap of battery and housing, weld, and be encased inside sealing shroud between end cap and pole, greatly strengthened the sealing of battery end, improved fail safe and the useful life of battery.

Embodiment 5: as shown in Figure 17-20, battery comprises housing 1, battery core 2, and housing 1 is cylindrical, the in-built battery core 2 of housing 1.The two ends of housing 1 all form opening, and opening is by end cap 3 cappings, and the middle part of end cap 3, through pole 4, is sealed and matched between the two.Pole 4 inner sides are connected with battery core 2 by lug 5, and pole 4 is bolted with lug 5, and the outside of pole 4 screws by nut 6 and end cap 3.Pole 4 outer ends also connect bus 8 by nut 7.

Referring to Figure 17, the outer wall of housing 1 is along the uniform heat radiation convex tendon of short transverse, to strengthen radiating effect.

The structure at battery two ends is identical or symmetrical, below an end construction is wherein described in detail.

The end cap seal rubber sleeve 9 of housing 1, seal rubber sleeve 9 by the exposed parts and components cover of battery end in the inner.Seal rubber sleeve 9 is with the outer wall contact site of housing 1 to convex, and this outer wall forms a circle depression, and depressed part is inserted in spring coil 10, the fastness that further enhanced leaktightness gum cover 9 coordinates with shell 1.The bus 8 that draw battery end is through seal rubber sleeve 9, and bus 8 outsides are also overlapped gum cover 19, and this gum cover 19 is connected with seal rubber sleeve 9.Seal rubber sleeve can make the parts of battery-end portion avoid the pollutions such as extraneous dust, aqueous vapor.

In the present embodiment, it sets up a water proof and dust proof seal rubber sleeve in battery end, the parts of battery end are comprised to the component covers such as bus, pole in the inner, separate with the external world, prevent by pollutions such as aqueous vapor, dusts, improved the security reliability that battery is used, and extended its useful life.

Figure 20 has shown the battery pack being assembled by two batteries, and the structure of single battery is described above, and two batteries are arranged side by side by two support plates 11 (this support can adopt the module support plate of embodiment 9), and the bus of two batteries is also connected.

Embodiment 6: referring to Figure 21, two battery positioned opposite of this battery pack, both also positioned opposite of seal rubber sleeve 9, wherein a seal rubber sleeve 9 has the hole of the holding wire that stretches through, for the holding wire 12 that stretches through.Bus 8 overcoats have 19, two seal rubber sleeves of gum cover 9 to be connected by gum cover 19.

The structure of the present embodiment single battery can reference example 5.

Embodiment 7: referring to Figure 22, side by side in groups, one seal rubber sleeve 9 has the hole 9-1 of the holding wire that stretches through to two batteries of this battery pack.

The structure of the present embodiment single battery can reference example 5.

Embodiment 8: referring to Figure 23, seal rubber sleeve 9 has the hole of the holding wire that stretches through, for the holding wire 12 that stretches through.

Bus 8 is through after seal rubber sleeve 9, by two rivets 13, connect another bus 14, the Sealed casing pipe support 15 of both connecting portion peripheral hardware annulars, the outer wall of Sealed casing pipe support 15 forms twice ring-shaped depression, seal rubber sleeve 16 is dome shape, and its end is to convex, and the outer wall of this end forms a ring-shaped depression, the interior protuberance of seal rubber sleeve 16 snaps in wherein one ring-shaped depression of Sealed casing pipe support 15, and the ring-shaped depression of its outer wall is inserted in Packing spring circle 17.The syndeton of Sealed casing pipe support 15 and seal rubber sleeve 18 as hereinbefore.

Seal rubber sleeve

9,16 is connected by gum cover 19, and gum cover 19 is coated at bus 8.Another battery that bus 14 is drawn, bus 14 stretches out seal rubber sleeve 18 parts by gum cover 20 outsourcings, and seal rubber sleeve 18 is connected with gum cover 20.Like this, all parts of battery end are all separated by corresponding gum cover and the external world, and anti-sealing, dirt produce harmful effect to battery.

The structure of the present embodiment single battery can reference example 5.

Aforementioned multiple embodiment is to housing both ends open, and the structure of drawing respectively anode, negative pole is described in detail.Certainly, those of ordinary skill in the art should be familiar with, and two deriving structure is the preferred technical solution of the present invention.The present invention also can draw from of housing positive pole, the negative pole of battery, and now, end cap need be through two poles, and fit structure between end cap and pole, end cap and housing can adopt the content of previous embodiment, no longer describes in detail.

Embodiment 9: as shown in Figure 24-29, the present embodiment relates to a kind of battery pack, the structure of single battery can adopt any structure of aforementioned multiple embodiment, and the present embodiment is mainly set forth the package assembly of battery pack.Each battery assembles by module support plate 22, and module support plate 22 is square, and offers four manhole 22-1.Single battery comprises housing 1, battery core etc., and the profile of housing is cylindrical, its in-built battery core, and the external diameter of housing and the manhole of module support plate are suitable.Bus 10 is drawn in one end of battery.Referring to Figure 27,28, four batteries, stretch into the manhole of module support plate and fit together, between battery, by bus, connecting.The present embodiment has two module support plates, the top and the bottom in battery respectively so that the assembling of four batteries is more firm, stable.

Dovetail groove 22-2 is all offered at four middle parts, edge of module support plate 22.Referring to Figure 29, contiguous block 23 form two with the suitable connecting portion 23-1 of the dovetail groove of module support plate, two connecting portions are symmetrical.While assembling two module support plates, both edges are affixed, make both dovetail grooves corresponding, then insert contiguous block.By this structure, the module support plate that polylith can be equipped with to several batteries is connected and is assembled into battery pack.

Certainly, can select according to the length of single battery the quantity of module support plate, as shorter, module support plate; If longer, two, three, four, even more.

The module support plate of the present embodiment can be fitted together formation battery pack by several battery pack, and the module support plate that also polylith can be equipped with to several batteries connects, and forms the battery pack of another kind of form.Its assembling and dismounting are all comparatively easy, and without special machine, have reduced cost.

In addition, according to the number needs of battery, select sizeable module to prop up piece, and offer required battery through hole, and be that module support plate can be assembled into battery pack without connecting without interconnecting; Battery through hole can be also other shape as square, its profile according to battery is determined; The shape of module support plate can be also other shape; The link slot of module support plate can be also other shape.

Those of ordinary skill in the art will be appreciated that, the present invention is not limited to above-described embodiment, any conversion of the present invention, modification all fallen into protection scope of the present invention.

Claims

1. a battery, comprises end cap, housing, battery core, lug, pole, bus, and housing at least forms a port, and port is sealed by the end cap that has through hole; Battery core is housed in housing, and battery core is connected with lug, and lug is in housing, and lug is connected with pole, and pole stretches out outside housing by the through hole of end cap, and pole outside is connected with bus; It is characterized in that: housing is cylindrical, housing outer wall forms heat radiation convex tendon; The port part outer wall cover of described housing has and welds a fillet of screw; End cap screws by nut and the fillet of screw and end cap is pressed in to the port edge of housing, and the shell end outer wall contacting with end cap is inserted in a sealing ring; Housing forms two-port, and described battery is drawn respectively positive pole, negative pole from the two ends of housing.

2. battery as claimed in claim 1, is characterized in that: described end cap has the through hole that pastes weldering safety diaphragm, and weldering safety diaphragm is pasted in this through hole of end cap.

3. a battery pack, is characterized in that being assembled by module support plate by multiple batteries as described in claim 1-2 any one, and described module support plate has the through hole that battery is installed; Described module support plate edge forms groove; If a contiguous block, this contiguous block form two with the suitable connecting portion of the groove of described module support plate, while assembling two module support plates, two connecting portions of described contiguous block insert respectively the groove of two module support plates.