CN101185183A

CN101185183A - lead battery

Info

Publication number: CN101185183A
Application number: CNA2005800499362A
Authority: CN
Inventors: 山口义彰; 河田裕泰; 秋本尚
Original assignee: Yuasa Battery Corp
Current assignee: GS Yuasa International Ltd
Priority date: 2005-05-30
Filing date: 2005-05-30
Publication date: 2008-05-21
Anticipated expiration: 2025-05-30
Also published as: HK1120929A1; WO2006129340A1; CN100576606C

Abstract

The present invention provides a lead storage battery adopting a collective exhaust method, which is excellent in gas discharge function and electrolyte escape prevention function, and does not leak electrolyte even when the battery is overturned. In the lead-acid storage battery that has exhaust mechanism together, configure the partition wall that surrounds the opening that is made of electrolyte return port (33) and gas discharge port (34), have through this partition wall and exhaust chamber (37, 37 ', 37 " ) separated unit cell communication chamber (35), the unit cell communication chamber (35) communicates with the exhaust chamber (37, 37 ', 37 ") through the gap (36) provided on the partition wall, the gap (36 ) other than the unit cells communicated with the chamber (35) and the exhaust chamber (37, 37 ', 37 ") through the partition wall.

Description

Lead accumulator

Technical field

The present invention relates to a kind ofly have when preventing that electrolyte from overflowing, discharge the lead accumulator of the exhaust structure of gas.

Background technology

Exhaust structure with integral type lead accumulator of a plurality of element cells (cell) roughly is divided into exhaust mode and exhaust mode respectively in the lump, exhaust mode is on each element cell blow-cook to be set respectively, exhaust mode is temporarily to import exhaust chamber from the gas that each element cell is discharged in the lump, concentrates gas and discharges to the outside from this exhaust chamber.Compare exhaust mode respectively, in the lump exhaust mode have that amount of parts is few, the volume of the upper space that can reduce pole plate and do not reduce battery capacity and just can realize the miniaturization of battery and the advantages such as escaped quantity that reduce electrolyte, therefore be widely used in the vehicle mounted lead accumulator.

In the past,, just prevented that electrolyte from overflowing to outside batteries with the form of mist or steam about the exhaust in the lump of lead accumulator, successfully discharge gas and do not make battery in press and rise this respect and propose to have several schemes.For example, proposition has following structure: the gas along continuous straight runs of the mist that contains electrolyte or steam is flowed, thereby the mist of its chien shih electrolyte or devaporation divided gas flow and electrolyte, discharge gas to the outside, the electrolyte that will condense is back in the element cell (with reference to patent documentation 1, patent documentation 2) simultaneously.

Patent documentation 1: No. 4486516 specification of United States Patent (USP)

Patent documentation 2: the spy of Japan opens flat 8-22815 communique

In addition, in order to improve the separative efficiency of gas and electrolyte, proposed to prolong the exhaust structure in the lump (with reference to patent documentation 3) of the mobile distance of gas along continuous straight runs as far as possible.

Patent documentation 3: the spy of Japan opens the 2001-84981 communique

In addition, following exhaust structure has also been proposed: at the configuration of the gas discharge outlet from the exhaust chamber to outside batteries porous filter, the mist or the steam that prevent electrolyte are discharged from, and it is wetting and cause stopping up (with reference to patent documentation 4) by electrolyte to prevent filter simultaneously at the downside of filter the space to be set.

Patent documentation 4: the spy of Japan opens flat 6-176748 communique

In the vehicle mounted lead accumulator, electrolysis liquid surface rises and falls during the car vibration, and electrolysis liquid surface tilted when car went up a slope.In the mode that above-mentioned patent documentation 1～3 proposes, when electrolysis liquid surface fluctuating, inclination, electrolyte is by the gas discharge outlet of connected unit battery and exhaust chamber, and the electrolyte in the element cell may fly out in the exhaust chamber.Electrolyte may spill into outside batteries from exhaust chamber when in addition, mistake made the battery rollover.Have, can't guarantee the space in the loam cake side of concentrating exhaust chamber, may damage the gas discharge function, perhaps filter is fallen the bottom surface of concentrating exhaust chamber and the function that can't bring into play filter.

Summary of the invention

Therefore, the present invention is in view of adopting the shortcoming of the existing lead accumulator of exhaust mode in the lump, and first purpose is to provide a kind of lead accumulator, the anti-effusion function excellence of the discharge function of its gas, electrolyte, even and battery when rollover electrolyte can not spill yet.

In addition, be used to realize that the structure of exhaust in the lump also has setting and the method for the direct exhaust that links of each element cell with path except that exhaust chamber, be adjacent to any one exhaust chamber at least of counting the exhaust chamber of same number configuration with element cell concentrated exhaust chamber is set, exhaust gas is laterally moved between exhaust chamber, after importing concentrated exhaust chamber, via concentrated exhaust chamber to the outside batteries exhaust, so this mode is because the space in footpath, simple in structure and exhaust passage is little preferred.In the battery of existing exhaust mode in the lump, with the position consistency of (towards the element cell side) element cell spaced walls of uniformly-spaced dispose in battery cell case and below the middle cover (element cell spaced walls directly over), dispose and be used to form the exhaust chamber spaced walls of counting the exhaust chamber of same number with element cell.Volume with the exhaust chamber of concentrated exhaust chamber adjacency in this existing exhaust structure diminishes, and gas can't fully carry out by condensing of electrolyte in the process of exhaust chamber, and electrolyte may spill when battery tilted.In addition, when the side of middle cover was provided with suspension strut and uses hook, the volume that is positioned at the exhaust chamber at battery both ends diminished, and existed and the identical shortcoming of exhaust chamber of described concentrated exhaust chamber and adjacency.

Therefore, the present invention adopts the shortcoming of the lead accumulator of exhaust mode in the lump in view of existing, and second purpose is to provide a kind of lead accumulator, the recovery function excellence of the discharge function of its gas, electrolyte, even electrolyte can not spill yet when battery tilted, has the excellent anti-function that spills.

Among the present invention,, the exhaust structure of lead accumulator reaches described first purpose thereby being made following structure.

(1) lead accumulator of the present invention, has mechanism to outside batteries exhaust in the lump, this mechanism is by the battery cell case 2 that holds a plurality of element cells, cover the top middle cover 3 of this battery cell case 2 and cover the space that the loam cake 4 of the recess 31 of this middle cover 3 is surrounded, with exhaust chamber spaced

walls

43,44,45 cut apart this space and the exhaust chamber 37 of counting same number with described element cell are set, 37 ', 37 "; by in described exhaust chamber spaced walls 43; 44; the breach or the open-work 67 that are provided with on 45 make adjacent exhaust chamber 37; 37 '; 37 " communicate with each other,

exhaust chamber

37,37 ', 37 " with the open communication of element cell; have and this exhaust chamber 37 by constituting by electrolyte refluxing opening 33 that on the diapire 32 of middle cover 3, is provided with and gas discharge outlet 34; 37 '; 37 " the concentrated exhaust chambers 41 that are communicated with, to import described exhaust chamber 37 from the gas that described element cell produces, 37 ', 37 " after; via described concentrated exhaust chamber 41 to outside batteries exhaust in the lump; it is characterized in that; the next door of the opening that is made of described electrolyte refluxing opening 33 and gas discharge outlet 34 is surrounded in configuration; have by this next door and described exhaust chamber 37; 37 ', 37 " element cell that separates is communicated with cell 35; make this element cell be communicated with cell 35 and exhaust chamber 37 by the breach 36 that is provided with on the next door; 37 '; 37 " are communicated with, are communicated with cell 35 and exhaust chamber 37 by next door isolated location battery beyond this breach 36.

(2) lead accumulator of the present invention, storage battery according to described (1) record, it is characterized in that, described

exhaust chamber

37,37 ', 37 " diapire 32 has inclination; the distance apart from the interconnecting part that is communicated with cell 35 connections with element cell is near more then low more; the distance apart from the interconnecting part that is communicated with cell 35 connections with element cell is far away more then high more; described exhaust chamber 37; 37 '; 37 " by at least two

next doors

46,47 are divided into the exhaust cell 38 more than three, 39,40, this

next door

46,47 have at least one

breach

48,49,

adjacent exhaust cell

38,39,40 pass through each other in described next door 46, the breach 48 that is provided with on 47,49 are communicated with, this

breach

48,49 in addition by described

next door

46,47 isolate, will be in adjacent next door 46, the described breach 48 that is provided with on 47, the tilted configuration of 49 relative diapires 32 is in flexuose position.

(3) lead accumulator of the present invention, storage battery according to described (2) record, it is characterized in that, with described

exhaust chamber

37,37 ', 37 " be divided into the inclination diagonal of 46, the 47 relative bottom surfaces, next door of

exhaust cell

38,39,40; the angle θ that this

next door

46,47 and described exhaust chamber spaced

walls

43,44,45 forms is an acute angle, and the extreme lower position of diapire 32 is provided with described

breach

48,49 among this

next door

46,47.

(4) lead accumulator of the present invention, storage battery according to described (2) record, it is characterized in that, with described a plurality of

exhaust chambers

37,37 ', 37 " among; be arranged in config set exhaust chamber 41 at least one exhaust chamber adjoining position of exhaust chamber 37 at battery both ends; separate described exhaust chamber 37 and concentrated exhaust chamber 41 with next door 50;; the exhaust cell 40 that is communicated with cell 35 away from described element cell is communicated with concentrated exhaust chamber 41, and this breach or open-work 51 pass through next door 50 separate row air chambers 37 and concentrated exhaust chamber 41 in addition by breach or the open-work 51 that on this next door 50, is provided with.

(5) lead accumulator of the present invention, storage battery according to described (1) record, it is characterized in that, described concentrated exhaust chamber 41 built-in porous filters 71, two spaces up and down that separate into loam cake 4 sides and middle cover 3 sides by this porous filter 71, the space of described loam cake 4 sides is communicated with outside batteries by exhaust passage 73, concentrate the bottom surface of exhaust chamber 41 to have inclination, then high more away from the interconnecting part that is communicated with exhaust chamber 37 more, in the described exhaust passage 73 of position configuration near the interconnecting part of concentrating exhaust chamber 41 and exhaust chamber 37.

(6) lead accumulator of the present invention, storage battery according to described (5) record, it is characterized in that, inner face at the loam cake 4 that forms described concentrated exhaust chamber 41 is provided with protuberance 72, the described porous filter 71 chimeric concentrated exhaust chambers that are arranged on the loam cake 4 that are installed in are separated with on the cylindrical bulkhead 50, form the space of described loam cake 4 sides.

(7) lead accumulator of the present invention, storage battery according to described (1) record, it is characterized in that, the fluid injection opening 54 to each element cell opening of counting same number with element cell is set on the diapire 32 of described middle cover 3, separate fluid injection chamber 52 by surrounding this fluid injection with the next door 53 and the loam cake 4 of opening 54, make this fluid injection chamber 52 and described exhaust chamber 37 and outside batteries hermetic closed.

(8) lead accumulator of the present invention, storage battery according to described (1) record, it is characterized in that, described middle cover 3 and loam cake 4 are made of thermoplastic resin forming body, on described middle cover 3 and the both sides of the inner face of loam cake 4 outer peripheral sidewall 65 is set, described exhaust chamber spaced

walls

43,44,45, described element cell is communicated with the next door of cell 35, the next door 50 of described concentrated exhaust chamber 41, be divided into described

exhaust cell

38,39,40

next door

46,47, melt by heat and to be bonded on middle cover 3 and the loam cake 4 outer peripheral sidewall 65 that is provided with each other, isolate the inside and outside of battery, melt the exhaust chamber spaced walls 43 that is bonded in setting on middle cover 3 and the loam cake 4 by heat, 44,45 each other, form with element cell and count the exhaust chamber 37 of same number, 37 ', 37 ", form element cell and be communicated with cell 35; exhaust cell 38; 39; 40; concentrate exhaust chamber 41.

(9) lead accumulator of the present invention, storage battery according to described (8) record, it is characterized in that, separate among the next door 50 of concentrating exhaust chamber 41 and exhaust chamber 37, at the thickness in the next door 50 that is provided with on the inner face of loam cake 4 thickness greater than the next door 50 that on middle cover 3, is provided with.

(10) lead accumulator of the present invention, the storage battery according to described (9) record is characterized in that, the lateral surface in the next door 50 that the inner face of described loam cake 4 is provided with is provided with along this next door the rib 74 that 50 short transverse is extended.

(11) lead accumulator of the present invention, the storage battery according to described (8) record is characterized in that, is provided with loam cake 4 contraposition when overlapping with pin 55 on described middle cover 3, on loam cake 4, be provided be used for this contraposition with the chimeric tubular hole 66 of pin 55.

Among the present invention, the exhaust structure of lead accumulator is made following structure reach described first purpose equally.

(12) lead accumulator of the present invention, has mechanism to outside batteries exhaust in the lump, this mechanism is by the battery cell case 2 that holds a plurality of element cells, cover the top middle cover 3 of this battery cell case 2, covering the space that the loam cake 4 of the recess 31 of this middle cover 3 surrounded has with exhaust chamber spaced

walls

43,44, the exhaust chamber 37 of 45 element cell same number that cut apart and described, 37 ', 37 " and with this exhaust chamber 37; 37 '; 37 " at least one concentrated exhaust chamber 41 that is communicated with, at

exhaust chamber

37,37 ', 37 " have on the diapire 32 and be communicated with described element cell and exhaust chamber 37; 37 '; 37 " electrolyte refluxing opening 33 and gas discharge outlet 34, the gas that will produce from described element cell is via described

exhaust chamber

37,37 ', 37 " and concentrated exhaust chamber 41 to outside batteries exhaust in the lump; it is characterized in that; at described exhaust chamber 37; 37 '; 37 " the wall towards element cell of diapire 32 be provided with cylindrical body 62 of surrounding described electrolyte refluxing opening 33 and in element cell, extending and the cylindrical body 63 of surrounding gas discharge outlet 34 and in element cell, extending, on the wall of the cylindrical body 63 of surrounding described gas discharge outlet 34 and in element cell, extending, be provided with breach or open-work 75.

(13) lead accumulator of the present invention, the storage battery according to described (12) record is characterized in that, described gas discharge outlet 34 is oval or rectangular opening.

(14) lead accumulator of the present invention, storage battery according to described (12) record, it is characterized in that, with described

exhaust chamber

37,37 ', 37 " diapire 32 among, be provided with the local diapire 32 of described gas discharge outlet 34 ' be configured in and compare around it diapire away from the position of the electrolysis liquid surface of element cell.

Among the present invention,, the exhaust structure of lead accumulator reaches described second purpose thereby being made following structure.

(15) lead accumulator of the present invention, has mechanism to outside batteries exhaust in the lump, this mechanism has accommodates the element cell spaced walls 57 that disposes by uniformly-spaced, 58,59 and the battery cell case 2 of a plurality of element cells of isolating mutually, cover the top middle cover 3 of this battery cell case 2 and the loam cake 4 of the recess 31 that covers this middle cover 3, described middle cover 3 has described element cell spaced walls 57 on the wall of element cell, 58,59, on the wall of loam cake 4, has the exhaust chamber 37 that to separate to become by the recess 31 of described middle cover 3 and space that loam cake 4 is surrounded with the element cell same number, 37 ', 37 " exhaust chamber spaced walls 43; 44; 45; by in described exhaust chamber spaced walls 43; 44; breach or the open-work 67 that are provided with on 45 make

adjacent exhaust chamber

37,37 ', 37 " communicate with each other; exhaust chamber 37; 37 '; 37 " and the openings 33 of element cell by on the diapire 32 of middle cover 3, being provided with, 34 are communicated with, have and described

exhaust chamber

37,37 ', 37 " among at least one exhaust chamber 37 in abutting connection with and the concentrated exhaust chamber 41 that is communicated with this exhaust chamber 37; will import described exhaust chamber 37 from the gas of described element cell generation; 37 '; 37 " after, via described concentrated exhaust chamber 41 to outside batteries exhaust in the lump, it is characterized in that, make at least separate with the exhaust chamber 37 of concentrated exhaust chamber 41 adjacency and the exhaust chamber 37 adjacent with this exhaust chamber 37 ' part or all of exhaust chamber spaced walls 43 compare and separate by opening 33,34 and with these two exhaust chambers 37, element cell spaced walls 5 staggered positions of two element cells of 37 ' connection.

(16) lead accumulator of the present invention, storage battery according to described (15) record, it is characterized in that, with the exhaust chamber 37 that is positioned at the battery end in abutting connection with the described concentrated exhaust chamber 41 of configuration, part or all that makes described exhaust chamber spaced walls 43 compared element cell spaced walls 57 and staggered to the battery central side.

(17) lead accumulator of the present invention, storage battery according to described (16) record, it is characterized in that, element cell spaced

walls

57,58,59 is set abreast with minor face 11 among the side of battery, with the exhaust chamber 37 of the end that is positioned at two minor faces, 11 sides in abutting connection with described concentrated exhaust chamber 41 is set.

(18) lead accumulator of the present invention, storage battery according to described (15) record, it is characterized in that, be provided with suspension strut with hook 42 in the central authorities of two minor faces of described middle cover 3, part or all that makes exhaust chamber spaced walls 43 compared element cell spaced walls 57 staggered positions, described exhaust chamber spaced walls 43 separate with the exhaust chamber 37 of this minor face adjacency and adjacent exhaust chamber 37 ', described element cell spaced walls 57 separates by opening 33,34 two element cells with this two exhaust chambers 37,37 ' be communicated with.

According to the battery of the present invention of described (1) record, even can make the lead accumulator that battery when rollover electrolyte spills the also little exhaust mode in the lump of possibility.

According to the battery of the present invention of described (2), (4) record, can make the lead accumulator of the exhaust gas and the separation function excellence of the mist that is included in electrolyte wherein, steam.In addition, even can make the lead accumulator of the littler exhaust mode in the lump of possibility that battery when rollover electrolyte spills.

According to the battery of the present invention of described (3) record, can make the lead accumulator of the backflow of carrying out the electrolyte that in exhaust chamber, condenses smoothly.

Battery of the present invention according to described (5) record can suppress to hinder because of plugged filter the discharge of gas.

According to the battery of the present invention of described (6) record, can guarantee to concentrate the filter of configuration in the exhaust chamber and the space between the loam cake inner face really.

According to the battery of the present invention of described (7), (8) record, can make after middle cover is installed and can carry out the fluid injection of electrolyte, and, even battery also can not spill the lead accumulator of electrolyte when turning on one's side.

According to the battery of the present invention of described (9), (10) record, can prevent from the upper end to melt when bonding with middle cover heat, because of the next door that makes chimeric installation filter is out of shape, filter comes off.

According to the battery of the present invention of described (11) record, can in cover good position ground loam cake be installed, and can suppress contraposition with auxiliary section nip water, foreign matter.

According to the battery of the present invention of described (12) and (14) record, even the electrolysis liquid surface that can make in the element cell rises and falls, when perhaps battery tilts, the lead accumulator of the exhaust mode in the lump that the possibility that electrolyte spills is also little.

According to the battery of the present invention of described (13), (14) record, can make gas discharge outlet and be difficult to be stopped up, and can make gas successfully move to the lead accumulator of exhaust chamber from element cell by electrolyte, foreign matter.

Battery of the present invention according to described (15) record, even with form by the next door count among the exhaust chamber of same number with element cell, arbitrary exhaust chamber is in abutting connection with being provided with when concentrating exhaust chamber, about with the exhaust chamber of this concentrated exhaust chamber adjacency, in the process in gas stream is crossed this exhaust chamber, can form the needed enough big exhaust chamber of mist, devaporation of the electrolyte of sneaking in the exhaust gas.In addition, even when invading exhaust chamber, also can form and accommodate the electrolyte of invading exhaust chamber, the not enough big exhaust chamber that spills to the outside because of the electrolyte in the battery tilting unit battery.

According to the battery of the present invention of described (16) record, can set from concentrating exhaust chamber to lead to the exhaust passage of outside batteries shortly.

According to the battery of the present invention of described (17) record,, also can discharge gas to outside batteries via another concentrated exhaust chamber even a concentrated exhaust chamber stops up.

According to the battery of the present invention of described (18) record, can make to have and carry easy suspension strut hook, and be formed with the lead accumulator that has with the enough big equally exhaust chamber of the lead accumulator of (15).

Description of drawings

Fig. 1 is the stereogram from the state of opening loam cake of the lead accumulator of oblique upper observation present embodiment;

Fig. 2 is the plane graph of middle cover of observing the lead accumulator of the same execution mode from the top;

Fig. 3 is the plane graph of middle cover of observing the lead accumulator of the same execution mode from the element cell side;

Fig. 4 is the plane graph of inner face of loam cake of the lead accumulator of the same execution mode of expression;

Fig. 5 is the state that loam cake is installed at the recess of the middle cover of the lead accumulator of the same execution mode, along the cutaway view of the A-A line of Fig. 2, Fig. 4;

Fig. 6 is the cross section of upper cover part of concentrated exhaust chamber of lead accumulator of the same execution mode of expression and the figure of side.

Fig. 7 is the state that loam cake is installed at the recess of the middle cover of the lead accumulator of the same execution mode, along the cutaway view of the B-B line of Fig. 3;

Fig. 8 (a) is the cutaway view along the C-C line of Fig. 7, (b) is the variation of (a).

Symbol description

1 ... lead accumulator, 2 ... battery cell case, 3 ... middle cover, 4 ... loam cake, 5 ... positive terminal, 6 ... negative terminal, 11 ... minor face, 21 ... sidewall, 31 ... recess, 32 ... diapire, 32 ' ... local diapire, 33 ... the electrolyte refluxing opening, 34 ... gas discharge outlet, 35 ... element cell is communicated with cell, 36 ... breach, 37,37 ', 37 " ... exhaust chamber; 38; 39; 40 ... the exhaust cell, 41 ... concentrate exhaust chamber, 42 ... the suspension strut hook, 43,44,45 ... the exhaust chamber spaced walls, 46,47 ... the next door, 48,49 ... breach, 50 ... the next door, 51 ... breach or open-work, 52 ... the fluid injection chamber, 53 ... the next door, 54 ... opening (liquid injection port), 55 ... contraposition pin (pin shape protuberance), 56 ... engage and use protuberance, 57,58,59 ... the element cell spaced walls, 60 ... sidewall, 61 ... the next door, 62,63 ... cylindrical body, 64 ... the lower end, 65 ... the periphery next door, 66 ... the tubular hole, 67 ... breach or open-work, 68 ... baffle plate, 69 ... breach, 70 ... baffle plate, 71 ... porous body (filter), 72 ... protuberance, 73 ... the exhaust passage, 74 ... rib, 75 ... breach or open-work

Embodiment

Below, describe the present invention in detail by an execution mode, but the present invention is not limited thereto.

Fig. 1 is a stereogram of observing six element cell monolithic devices lead accumulators 1 of one embodiment of the present invention from oblique upper.2 of Fig. 1 is battery cell cases, its inside by with the battery side in five next doors (not shown) of minor face configured in parallel be divided into six element cells, the electrolyte (not shown) that each element cell holds the pole plate group of being made up of a group of positive plate, negative plate and dividing plate respectively and is made of dilute sulfuric acid.3 of Fig. 1 is middle covers of installing on battery cell case 2, the 4th, and the loam cake of installing at the recess of middle cover 3.Battery cell case 2, middle cover 3, loam cake 4 all are the formed bodys of polypropylene system, the side wall lower ends (not shown) of sidewall upper of battery cell case 2 (not shown) and middle cover 3 and melted by heat in the lower end (not shown) in the next door of the upper end in the next door that the recess of middle cover 3 is provided with and loam cake 4 bonding, respectively by airtight joint.In addition, the 5th, the positive terminal of lead alloy system, the 6th, the negative terminal of lead alloy system.

Among Fig. 1, with among the exhaust chamber that is provided with on the middle cover 3, near the end exhaust chamber of the short side of battery in abutting connection with two concentrated exhaust chambers 41 are set, and, a suspension strut is set with hook 42 respectively in the central authorities of two short sides of middle cover 3.By hanging with band with screens on the hook 42, can under the state that hangs battery, carry, so carrying easily in this suspension strut.

Fig. 2 is the figure that observes middle cover 3 from the top.The recess 31 that is provided with on middle cover 3 is separated inner space and outer space for battery by next door (part of oblique line), and the inner space of battery is spaced and is identical with the element cell number six, be respectively

exhaust chamber

37,37 ', 37 " (three of left-half; because left-right symmetric is so right half part omits label symbol, following dependency structure too).

Be used for realizing the structure of exhaust in the lump, also has a kind of method that path is used in the exhaust that directly links with each element cell that except that exhaust chamber, is provided with, exhaust chamber 41 in the config set of the end of battery, make exhaust gas six

exhaust chambers

37,37 corresponding with each element cell ', 37 " laterally move and it imported and concentrate exhaust chamber 41; from concentrating exhaust chamber 41 to the outside batteries exhaust, this mode is because the space of exhaust pathway simple in structure is little and preferred.In this mode, need to be communicated with six sections forming by described next door so that exhaust gas can laterally move.But, during battery uses in order not make the poor of liquid measure that produce electrolysis between element cell, need the

exhaust chamber

37,37 of each element cell correspondence ', 37 " in the electrolyte that condenses be not laterally to move at section, but it is back in corresponding element cell.Therefore, between six sections, laterally move, preferably the exhaust chamber spaced walls among the described

next door

43,44,45 is provided as barrier in order to prevent electrolyte.

As described later, inner face at loam cake 4 also is provided with the exhaust chamber next door, accordingly the inner space of battery being separated with the exhaust chamber spaced

walls

43,44,45 of middle cover 3 is six chambers, is provided with breach on this exhaust chamber next door, so that gas can indoorly laterally move at six.Relative therewith, the situation of middle cover 3 is: breach is not set the chamber being divided on six the exhaust chamber spaced

walls

43,44,45, preferably with this exhaust chamber spaced

walls

43,44,45 as the barrier that is used to prevent that electrolyte from laterally moving at six sections.

Adopt

exhaust chamber

37,37 ', 37 " in an exhaust chamber 37 describe for example; the 35th, element cell is communicated with cell; this element cell is communicated with cell 35 and element cell is communicated with element cell by electrolyte refluxing opening 33, gas discharge outlet 34; wherein electrolyte refluxing opening 33 will be back at the electrolyte that exhaust chamber 37 condenses in the element cell, gas discharge outlet 34 will be discharged to element cell connection cell 35 at the gas that element cell produces.Element cell is communicated with cell 35 and separates by next door and exhaust chamber 37, is communicated with exhaust chamber 37 by the breach 36 that is provided with on the next door, isolates by next door and exhaust chamber 37 beyond this breach 36.

In addition, it is three

exhaust cells

38,39,40 that exhaust chamber 37 is spaced by two

next doors

46,47, a breach (48,49) is set respectively on this

next door

46,47, is communicated with by the

breach

48,49 that is provided with on the

next door

46,47 between the adjacent exhaust cell (38,39,40).As described later, the bottom surface of exhaust chamber 37 keeps tilting along the minor face of middle cover 3, and it is low more to be communicated with cell 35 sides the closer to element cell, and it is high more to be communicated with cell 35 away from element cell more.The

breach

48,49 that is provided with on the

next door

46,47 is configured on the straight line of the dip-parallel that is provided with in the bottom surface with exhaust chamber 37 not overlapping (being in flexuose position among the figure), to prolong the stream by the gas of exhaust chamber 37.Thus,, can make the mist or the devaporation of the electrolyte of sneaking into exhaust gas efficiently, from exhaust gas, remove by in the process of exhaust chamber 37.

Above-mentioned concentrated exhaust chamber 41 separates by next door 50 and exhaust chamber 37 (being exhaust cell 39 among the figure), by the breach 51 that is provided with on the next door 50, with among three

exhaust cells

38,39,40, be positioned at exhaust cell 40 connections that are communicated with cell 35 away from element cell.

The 52nd, the fluid injection chamber has the opening of offering 54 on element cell, separates by next door 53 and exhaust chamber 37 (being exhaust cell 40 among the figure) on every side.The 55th, the contraposition pin when the recess 31 of middle cover 3 is installed loam cake 4, chimeric with the tubular described later hole that on loam cake 4, is provided with.The 56th, engage and to use protuberance, be used to strengthen and the engaging of loam cake 4.

Be illustrated in following (element cell side wall surface) last element cell spaced walls that is provided with of middle cover 3 among Fig. 2 by 57,58,59 of dotted line, exhaust chamber spaced walls 43 between exhaust chamber 37 and the concentrated exhaust chamber 41 that is adjacent staggers to the battery central side from the position of element cell spaced walls 57, this element cell spaced walls 57 be disposed at by described exhaust chamber 37,37 ' and the diapire 32 of middle cover 3 between two element cells being communicated with of the opening (electrolyte refluxing opening 33, gas discharge outlet 34) that is provided with.If make the position of exhaust chamber spaced walls 43 and the position consistency of element cell spaced walls 57, then the spatial volume of exhaust chamber 37 and other exhaust chambers 37 ', 37 " compare and become minimum; can not fully carry out condensing of electrolyte in the above-mentioned exhaust chamber 37; electrolyte can escape to outside batteries in exhaust chamber 37, the recovery function of electrolyte, the anti-function that spills can variation.To this, according to present embodiment, can make with the spatial volume of the exhaust chamber 37 of concentrated exhaust chamber 41 adjacency and other exhaust chambers 37 ', 37 " identical, prevent that perhaps it from becoming minimum.In the present embodiment, in addition, along with exhaust chamber spaced walls 43 is staggered to the battery central side, exhaust chamber spaced walls 44 is compared element cell spaced walls 58 and is also staggered to the battery central side.So staggered in the position of exhaust chamber spaced walls 43,44 by comparing element cell spaced walls 57,58, can make three exhaust chambers 37,37 ', 37 " spatial volume roughly the same.

Fig. 3 is from observe the figure of middle cover 3 towards the direction of element cell.The part of oblique line is to melt the end face of the bonding sidewall that engages 60 and the end face of element cell spaced

walls

57,58,59 with the sidewall of not shown battery cell case 2 and the open end of element cell spaced walls by heat.It is six element cells that battery is spaced by five element cell spaced walls.As mentioned above, be provided with on the diapire 32 of middle cover 3 by counting the electrolyte refluxing opening 33 of same number and the opening that gas discharge outlet 34 is formed with element cell, element cell and exhaust chamber are by this open communication.

In addition, in the configuration cylindrical body 62 and the cylindrical body 63 on the wall of element cell of the diapire 32 of middle cover 3, cylindrical body 62 is surrounded electrolyte refluxing openings 33 and is extended to element cell, and cylindrical body 63 is surrounded gas discharge outlets 34 and extended to the direction of element cell.

Fig. 4 is the figure that observes loam cake 4 from inner face, with next door (exhaust chamber spaced walls and the periphery next door) position overlapped that is arranged at above the middle cover 3 on have exhaust chamber spaced

walls

43,44,45 and periphery next door 65, and have and the described contraposition that on middle cover 3, is provided with the chimeric tubular hole 66 of pin 55.Space segmentation becomes on six the exhaust chamber spaced

walls

43,44,45 to be respectively equipped with breach 67 in battery, forms the path that exhaust gas can laterally move between exhaust chamber.In addition, be useful on the baffle plate 68 that inhibition electrolyte moves in position configuration with these breach 67 subtends.And on the next door of electrolyte refluxing opening 33 sides that separate element cell connection cell 35 and gas exhaust port 34 sides, be provided with breach 69, the gas that formation is discharged from element cell is to path that exhaust chamber 37 moves, in the position configuration with these breach 69 subtends baffle plate 70 is arranged, inhibition entrained gas and the electrolyte of discharging from element cell move to exhaust chamber 37.

During installation loam cake 4, the next door of the next door of middle cover 3 and loam cake 4 is configured in the position that overlaps fully on the recess 31 of middle cover 3, and bonding the joint melted by heat in the lower end in the next door of the upper end in the next door of middle cover 3 and loam cake 4.All isolated the breach that the so next door by engaging middle cover 3 and the next door of loam cake 4, element cell are communicated with between cell 35 and exhaust chamber 37, the adjacent exhaust cell (38,39,40), exhaust chamber 37 and concentrated exhaust chamber 41 are provided with on next door.

In addition, as Fig. 2 with shown in Figure 4ly on the next door 53 that surrounds fluid injection chamber 52, breach is not set, the next door by engaging loam cake 4 and the next door of middle cover 3, fluid injection chamber 52 and exhaust chamber 37, the airtight isolation in fluid injection chamber 52 and outside batteries space.

Fig. 5 is illustrated in loam cake 4 is installed on the recess 31 of middle cover 3, makes next door that the recess 31 at middle cover 3 is provided with and the figure of the state that engages in the next door that the inner face of loam cake 4 is provided with, is the cutaway view of part shown in the A-A line of Fig. 2, Fig. 4.The diapire 32 of the recess 31 of middle cover 3 keeps tilting, and it is low more to be communicated with cell 35 the closer to element cell, and is high more away from the position of element cell connection cell 35 more.In addition, as shown in Figure 2, make exhaust chamber 37 is divided into the inclination of next door 46,47 relative diapires 32 of three exhaust cells 38,39,40 and diagonal, the angle θ that exhaust chamber spaced walls 43,44,45 and next door 46,47 are formed acutangulates, and the breach 48,49 in next door 46,47 is configured in the extreme lower position of the bottom surface of above-mentioned inclination, so battery is under common state (state of horizontal positioned), the electrolyte that condenses in exhaust chamber 37 moves to electrolyte refluxing opening 33 sides along the inclination that is provided with on the diapire 32 of exhaust chamber, can not be detained.

The inner space of element cell is the breach 36 in the next door that is provided with except being used for connected unit battery connection cell 35 and exhaust chamber 37, with exhaust chamber 37 and then hermetic closed with the space outerpace of battery.Mistake makes battery when rollover, and electrolyte spills into element cell from element cell and is communicated with cell 35 and is full of this element cell and be communicated with cell 35, and electrolysis liquid surface arrives and is used for that the connected unit battery is communicated with cell 35 and exhaust chamber 37 and the breach 36 in the next door that is provided with.As mentioned above, except this breach 36, the inner space of element cell and the airtight isolation of the space outerpace of battery, so under the state that breach 36 is stopped up by electrolyte, air can't be invaded in the element cell, be applied in atmospheric pressure arriving on the electrolysis liquid surface of breach 36, therefore when element cell is communicated with cell 35 overturnings and is downside and element cell when being communicated with cell 35 overturnings and being upside etc. in any case, the electrolyte that can stop in the element cell invades exhaust chamber 37.

In addition, when 35 overturnings of element cell connection cell are downside, the electrolyte that condenses in the exhaust chamber 37 moves to element cell by the breach 48,49 that is provided with and is communicated with cell 35 sides on the next door 46,47 that exhaust chamber 37 is divided into exhaust cell 38,39,40, can prevent that therefore electrolyte from invading concentrated exhaust chamber 41.And when element cell is communicated with cell 35 rollovers for upside, as Fig. 2, shown in Figure 4, in exhaust chamber 37, dispose two (present embodiment is two) next doors 46 at least, 47, will be in each next door 46, the breach 48 that is provided with on 47, the tilted configuration of the bottom surface of 49 relative exhaust chambers 37 is in a zigzag, and be configured to not overlap on the straight line with dip-parallel, so even battery rollover each other can be not overlapping at above-below direction after wall yet, therefore can prevent to cross and exhaust cell 39 in the middle of not going at the electrolyte that the exhaust cell 38 that is communicated with cell 35 near element cell condenses.In addition, make next door 46,47 diagonals of cutting apart exhaust chamber 37, the angle θ of exhaust chamber spaced walls 43,44,45 and next door 46,47 formation is set as acute angle, thereby each exhaust cell (38,39,40) forms the storage liquid space, prevents that the electrolyte that condenses in exhaust chamber 37 from moving to concentrated exhaust chamber 41.In order to enlarge the storage liquid space,, preferably will be communicated with direction (the low direction of the diapire 32 of the exhaust chamber 37) bending of cell 35 to element cell with the end that the breach 48,49 in next door 46,47 joins as Fig. 2, shown in Figure 4.

In addition, more preferably make the substantial middle of concentrating exhaust chamber 41 to be positioned at the minor face of loam cake 4, concentrate exhaust chamber 41 and exhaust cell 40 connections that are communicated with cell 35 away from element cell, being communicated with cell 35 rollovers at element cell is under the state of downside, element cell is communicated with cell 35 and is positioned at the upside of this exhaust cell 40, thereby can prevent that the electrolyte that condenses in exhaust chamber 37 from moving to concentrated exhaust chamber 41.

The mist or the steam of the electrolyte of sneaking into from the exhaust gas that element cell is discharged condense in the process by exhaust chamber 37, and its major part was removed before arriving concentrated exhaust chamber 41.But, also may contain micro-electrolyte among the exhaust gas of the concentrated exhaust chamber 41 of arrival.In order to remove this micro-electrolyte, as shown in Figure 5, at the porous body 71 of the inboard chimeric polypropylene system in the next door 50 of the loam cake 4 of enclosure aggregate exhaust chamber 41, ceramic as filter.In order not improve the just exhaust smoothly of pressure in the exhaust chamber 37, preferred exhaust gas passes through along the thickness direction of filter 71.Therefore, need between the internal face of filter 71 and loam cake 4, the space be set.This filter 71 is entrenched on the cylindrical bulkhead 50 of concentrating exhaust chamber 41 and blocks, so be difficult to the location, but protuberance 72 can be set by the inner face at loam cake 4, thereby is provided with at interval between the internal face of loam cake 4 and filter 71.Because this method is easy, so and can guarantee that certain interval is preferred.Shape, the quantity of protuberance 72 are not particularly limited, but spaced and parallel for the internal face that makes filter 71 and loam cake 4, preferably make the annular stepped that the interior circumferential portion at the concentrated exhaust chamber 41 of the internal face of loam cake 4 is provided with, perhaps at least three protuberances 72 are uniformly-spaced disposed.By this structure, move to the gas of concentrating exhaust chamber 41, move in the filter 71 along the thickness direction of filter 71, arrive the loam cake 4 side spaces of concentrating exhaust chamber 41, be discharged to the outside by exhaust passage 73.

Concentrate the bottom surface of exhaust chamber 41 preferably to be set to, the breach that is provided with on the next door 50 the closer to being used for connected set exhaust chamber 41 and exhaust cell 40 (Fig. 2 51) is low more, high more away from breach 51 more.In addition, preferably will be used for being arranged on the position of close breach 51 to the exhaust passage 73 of outside batteries discharge gas.Under the state that rises because of the pressure in the gas exhaust chamber 37 of discharging from element cell, when since exhaust chamber 37 in air pressure, when concentrated exhaust chamber 41 moved, air-flow was easy to concentrate on the part away from the inside of the inlet (being equivalent to breach 51) of concentrating exhaust chamber 41 to gas from exhaust chamber 37.Therefore, do not condense and mist, the steam flow of the electrolyte of the trace of entrained gas also are easy to concentrate on the inside of concentrating exhaust chamber 41 at exhaust chamber 37, the part electrolyte in the inside of concentrating exhaust chamber 41 condenses and causes filter 71 to stop up.By concentrating the slanted floor of exhaust chamber 41, be made as above-mentioned structure from concentrating the configuration that exhaust chamber 41 leads to the gas exhaust passage 73 of outside batteries, can make exhaust gas equably by filter 71.

In order to shorten the length of exhaust passage 73, preferably concentrate exhaust chamber 41 in abutting connection with being provided with the exhaust chamber 37 that is positioned at the battery end.In addition, as mentioned above, at concentrated exhaust chamber 41 configuration porous filters 71, be used to prevent that the electrolyte that does not condense fully from discharging to outside batteries in exhaust chamber 37, when but a concentrated exhaust chamber 41 only is set, just in case when concentrating the filter 71 of exhaust chamber 41 to take place to stop up, may cause obstacle by supply and exhaust.For fear of this obstacle, as Fig. 2～shown in Figure 4.About preferred two concentrated exhaust chambers 41 are set, by the breach 67 that on the exhaust chamber spaced

walls

43,44,45 of the inner face of loam cake 4, is provided with, make

whole exhaust chambers

37,37 ', 37 " be communicated with.

Melt the bonding next door that engages middle cover 3 and loam cake 4 each other the time by heat, be extruding middle cover 3 and loam cake 4 under the state in heating and softening next door the next door each other, so the next door may be out of shape.The concentrated exhaust chamber that is entrenched in the inner face that is arranged at loam cake 4 in installed filters 71 on the concentrated exhaust chamber 41 of loam cake 4 forms among the cylindrical bulkhead 50 of usefulness and blocks, therefore be out of shape and the inside dimension in next door 50 when changing when the next door 50 of loam cake 4, then filter 71 may come off.In order to prevent this problem, preferably compare the next door 50 of middle cover 3, improve the mechanical strength in the next door 50 of loam cake 4, the next door 50 of loam cake 4 is difficult to produce distortion when engaging both.Particularly, as shown in Figure 5, preferably compare the thickness in the next door 50 of middle cover 3, increase the thickness in the next door 50 of loam cake 4.The ratio of both thickness is not particularly limited, but preferably is 1.5～3 times of thickness in the next door 50 of middle cover 3 with the thickness setting in the next door 50 of loam cake 4.In addition, more preferably the thickness setting with the next door 50 of loam cake 4 must be bigger, along the short transverse in next door rib 74 is set at the outer peripheral face in the next door 50 of this loam cake 4.The shape of this rib 74, size, quantity are not particularly limited, but preferably at least in three places, 50 periphery uniformly-spaced disposes along the next door.

As shown in Figure 2, on middle cover 3, be provided with liquid injection port 54.By liquid injection port 54 is set, carry out fluid injection after can on battery cell case 2, middle cover 3 being installed, in the battery assembling procedure after fluid injection, can not overflow, easily carrying even shake, vibrate battery electrolyte yet.Recess 31 at middle cover 3 after the fluid injection is installed loam cake 4, melt the next door of bonding middle cover 3 and loam cake 4 and airtight joint by heat, forms and the fluid injection chamber 52 of exhaust chamber 37 airtight isolation by the wall of next door 53 that surrounds above-mentioned liquid injection port 54 and loam cake 4, even can prevent also when battery is turned on one's side that thus the electrolyte in the element cell from escaping to exhaust chamber 37, outside batteries by liquid injection port 54.

Fig. 6 is the structure of loam cake 4 sides among the concentrated exhaust chamber 41 of expression and the figure of exhaust passage 73.Flow through the gas that comes from the below of concentrating exhaust chamber 41 by next door 57 chimeric installed filters 71, move to the space that the inner face with loam cake 4 joins, be discharged to outside batteries via exhaust passage 73.In addition, can guarantee that by protuberance 72 inner face at loam cake 4 has a certain size space in the inner face setting of loam cake 4.

Fig. 7 is the cutaway view of the B-B line along Fig. 3 when dissecing middle cover 3.In addition, for easy to understand, Fig. 7 shows the sidewall 21 of battery cell case 2, the open end of element cell spaced walls 57,58 and the part of loam cake 4.End face and the sidewall 21 of battery cell case 2, the open end of element cell spaced walls 57,58 in the next door that is provided with on the wall of element cell among the diapire 32 of middle cover 3 melt bonding and airtight joint by heat.In addition, the next door that recess is provided with on the diapire 32 of middle cover 3 and melt bonding and airtight joint by heat in the next door that the inner face (being the face of downside among the figure) of loam cake 4 is provided with forms the exhaust chamber 37 that is surrounded by middle cover 3 and loam cake 4.As mentioned above, the gas that produces from element cell arrives element cell connection cell 35 by gas discharge outlet 34, by go up in the exhaust chamber spaced walls (43,44,45) of loam cake 4 breach 67 that is provided with move to exhaust chamber (37,37 ', after 37 "); be imported into the concentrated exhaust chamber (not shown) that is communicated with exhaust chamber 37, be discharged to outside batteries via concentrated exhaust chamber.The mist of the electrolyte of entrained gas, devaporation become liquid in the process in gas moves to exhaust chamber 37, are back in the element cell from exhaust chamber 37 by electrolyte refluxing opening 33.

As mentioned above, be provided with cylindrical body 62 and cylindrical body 63 on the diapire 32 of middle cover 3, cylindrical body 62 is surrounded electrolyte refluxing opening 33 and is extended to element cell, and cylindrical body 63 is surrounded gas discharge outlet 34 and extended to element cell.The effect of this

cylindrical body

62,63 is the wall collision of summit (crest), ripple and the battery cell case 2 of ripple when preventing that electrolysis liquid surface in the element cell from rising and falling and spittle arrival electrolyte refluxing opening 33, the gas discharge outlet 34 of the electrolyte that produces.

In addition, make it immerse the electrolyte (lower end 64 of

cylindrical body

62,63 is in the state under the electrolysis liquid surface) of element cell by the lower end 64 of setting

cylindrical body

62,63, have and electrolysis liquid surface is separated into small size, the effect of electrolyte arrival electrolyte refluxing opening 33, gas discharge outlet 34 when being suppressed at the battery inclination.Rugosity, the cross sectional shape of cylindrical body 62 and cylindrical body 63 are not particularly limited, electrolyte arrives electrolyte refluxing opening 33, gas discharge outlet 34 when tilting in order to be suppressed at battery, it is desirable to electrolysis liquid surface be separated into small size as far as possible, and the preferred small size of rugosity of

cylindrical body

62,63.

In the present embodiment, preferably surrounding gas discharge outlet 34 and on the wall of the cylindrical body 63 that element cell extends, breach or open-work are being set.Size, the position of this breach or open-work are not particularly limited, but as mentioned above when preventing that electrolyte from rising and falling electrolyte arrive gas discharge outlet 34, preferred small size.But, successfully discharge from element cell in order to make gas, even when it is desirable to that electrolyte in the element cell rises and falls or battery tilts, the upper end of breach also is on the electrolysis liquid surface.And preferred size is, cylindrical body 63 liquid film that electrolyte forms when wetting by electrolyte can not stop up breach or open-work.In order to satisfy this condition, the shape that breach that is provided with or open-work are preferably lengthwise on cylindrical body 63.In view of the above, the upper end of breach or open-work is set on the electrolysis liquid surface, and thin as far as possible, electrolyte arrives gas discharge outlet 34 in the time of can preventing that electrolyte from rising and falling, and suppresses breach or open-work simultaneously and is stopped up by the liquid film of electrolyte.

Fig. 8 is the cutaway view of part shown in the C-C line of Fig. 7.On the wall of cylindrical body 63, be provided with the breach or the open-work 75 of lengthwise as mentioned above.

In the present embodiment, as mentioned above owing to surround gas discharge outlet 34 and the wall of the cylindrical body 63 of extending to element cell is provided with breach or open-work 75, so compare electrolyte refluxing opening 33, the easier arrival gas discharge outlet 34 of electrolyte spittle when electrolysis liquid surface rises and falls.The electrolyte spittle that arrives gas discharge outlet 34 can be at gas discharge outlet 34 formation liquid films and with its obstruction.If gas discharge outlet is stopped up by liquid film, the electrolyte that condenses thereon is detained, and then may hinder gas and discharge from element cell by gas discharge outlet 34.In order to prevent the formation of liquid film, as shown in Figure 7, preferably the shape with gas discharge outlet 34 is made as elongated ellipse, rectangle rather than circle, square.

In addition, stop up the drawback that the foreign matter that gas discharge outlet 34 and gas discharge outlet 34 swim on by electrolysis liquid surface (sponge (sponge) the shape lead that comes off from pole plate etc.) stops up for fear of forming liquid films at gas discharge outlet 34, as shown in Figure 7 and Figure 8, more preferably will contain the local diapire 32 of gas discharge outlet 34 ' the be configured in position higher, increase the distance of gas discharge outlet 34 and electrolysis liquid surface than the diapire 32 of middle cover 3.

In addition, the next door preferably is set, make its encirclement have on the diapire 32 of middle cover 3 the described local diapire 32 of the gas discharge outlet 34 that is provided with ', separate element cell and be communicated with cell 35, make the electrolyte that in exhaust chamber 37, condenses not enter element cell and be communicated with cell 35, simultaneously the gas of discharging from element cell by the breach 67 in exhaust chamber spaced walls (43,44, the 45) setting of loam cake 4 move to exhaust chamber (37,37 ', 37 ").

More than be explanation, as mentioned above, be provided with the pin shape protuberance of using with loam cake 4 contrapositions 55, be provided with at the inner face of loam cake 4 and be used for the tubular hole 66 chimeric with pin shape protuberance 55 at the recess 31 of middle cover 3 about the structure of present embodiment.With the contraposition parts of pin shape protuberance 55 as middle cover 3, have the following advantages: on battery cell case 2, install after middle cover 3 and the fluid injection electrolyte, in the operation of washing battery cell case 2 outsides, even when being washed water-wet above the middle cover 3, water can not remain in fitting portion yet, the foreign matter of perhaps nipping.

(battery does not tilt) suspension strut battery for stably, preferably the central authorities of two minor faces are provided with above-mentioned suspension strut hook 42 among the side of battery.In addition, even battery tilts, for the inclination that reduces electrolysis liquid surface influence as far as possible for battery cell case 2 walls, preferably with the side of battery among minor face (Fig. 2 11) dispose said units battery interval wall 57,58,59 abreast.But, if suspension strut is set with hook 42 at the minor face 11 of middle cover 3, then be provided with the space appearance of suspension strut and become minimum with the exhaust chamber 37 of minor face 11 adjacency of hook 42.According to present embodiment, as shown in Figure 2, even with the dispensing unit battery interval wall 57,58,59 abreast of minor face 11 among the side of battery, at the central configuration suspension strut of the minor face 11 of middle cover 3 battery with hook 42, by with the location independent ground of element cell spaced walls 57,58,59 configuration exhaust chamber spaced walls 43,44,45, can make and be provided with suspension strut with the spatial volume of the exhaust chamber 37 of the limit adjacency of hook 42 have not second to other (being positioned at the battery central side) exhaust chambers 37 ', 37 " size.

More than, describe the present invention in detail according to an execution mode, but the present invention is not limited to above-mentioned execution mode.Among the present invention, for example concentrate the position of exhaust chamber 41 to be not particularly limited, can separate the purpose that reaches the application with the position of the exhaust chamber spaced walls 43 of the exhaust chamber 37 of concentrated exhaust chamber 41 adjacency by location independent ground setting with element cell spaced

walls

57,58,59.

Claims

1. lead accumulator, has mechanism to outside batteries exhaust in the lump, this mechanism is by the battery cell case that holds a plurality of element cells (2), cover the top middle cover (3) of this battery cell case (2) and cover the space that the loam cake (4) of the recess (31) of this middle cover (3) is surrounded, with exhaust chamber spaced walls (43,44,45) cut apart this space and the exhaust chamber (37 of counting same number with described element cell is set, 37 ', 37 "); by the breach that is provided with in described exhaust chamber spaced walls (43; 44; 45) or open-work (67) make adjacent exhaust chamber (37; 37 '; 37 ") communicate with each other, exhaust chamber (37,37 ', 37 ") and the open communication of element cell by constituting by electrolyte refluxing opening (33) that is provided with at the diapire (32) of middle cover (3) and gas discharge outlet (34); have with this exhaust chamber (37; 37 '; the concentrated exhaust chamber (41) of 37 ") connection, to import described exhaust chamber (37 from the gas that described element cell produces, 37 ', 37 "); via described concentrated exhaust chamber (41) to outside batteries exhaust in the lump; it is characterized in that

The next door of the opening that is made of described electrolyte refluxing opening (33) and gas discharge outlet (34) is surrounded in configuration, have by this next door and described exhaust chamber (37,37 ', the element cell that separates of 37 ") is communicated with cell (35); the breach (36) that is provided with by next door make this element cell be communicated with cell (35) and exhaust chamber (37,37 ', 37 ") are communicated with, this breach (36) passes through next door isolated location battery connection cell (35) and exhaust chamber (37) in addition.

2. lead accumulator according to claim 1 is characterized in that,

Described exhaust chamber (37,37 ', 37 " diapire) (32) has inclination; the distance apart from the interconnecting part that is communicated with cell (3 5) connection with element cell is near more then low more; the distance apart from the interconnecting part that is communicated with cell (35) connection with element cell is far away more then high more; described exhaust chamber (37; 37 '; 37 ") are by at least two next doors (46,47) be divided into exhaust cell (3 8 more than three, 39,40), this next door (46,47) has at least one breach (48,49), adjacent exhaust cell (3 8,39,40) pass through each other in described next door (46,47) breach (48 of She Zhiing, 49) be communicated with, this breach (48,49) in addition by described next door (46,47) isolate, will be in adjacent next door (46,47) the described breach (48 of She Zhiing, 49) tilted configuration of relative diapire (32) is in flexuose position.

3. lead accumulator according to claim 2 is characterized in that,

With described exhaust chamber (37,37 ', 37 ") the relative inclination diagonal of bottom surface in next door (46,47) that is divided into exhaust cell (38,39,40); the angle θ of this next door (46,47) and described exhaust chamber spaced walls (43,44,45) formation is an acute angle, and the extreme lower position of diapire (32) is provided with described breach (48,49) among this next door (46,47).

4. lead accumulator according to claim 2 is characterized in that,

With described a plurality of exhaust chambers (37,37 ', among 37 "), be arranged at least one exhaust chamber adjoining position config set exhaust chamber (41) of the exhaust chamber (37) at battery both ends; separate described exhaust chamber (37) and concentrated exhaust chamber (41) with next door (50); by breach or the open-work (51) that is provided with in this next door (50); the exhaust cell (40) that is communicated with cell (35) away from described element cell is communicated with concentrated exhaust chamber (41), and this breach or open-work (51) pass through next door (50) separate row air chamber (37) and concentrated exhaust chamber (41) in addition.

5. lead accumulator according to claim 1 is characterized in that,

The built-in porous filter of described concentrated exhaust chamber (41) (71), two spaces up and down that separate into loam cake (4) side and middle cover (3) side by this porous filter (71), the space of described loam cake (4) side is communicated with outside batteries by exhaust passage (73), concentrate the bottom surface of exhaust chamber (41) to have inclination, more then high more away from the interconnecting part that is communicated with exhaust chamber (37), in the described exhaust passage of position configuration (73) near the interconnecting part of concentrating exhaust chamber (41) and exhaust chamber (37).

6. lead accumulator according to claim 5 is characterized in that,

Inner face at the loam cake (4) that forms described concentrated exhaust chamber (41) is provided with protuberance (72), the chimeric concentrated exhaust chamber that is arranged at loam cake (4) that is installed in of described porous filter (71) is separated with cylindrical bulkhead (50), form the space of described loam cake (4) side.

7. lead accumulator according to claim 1 is characterized in that,

Diapire (32) in described middle cover (3) is provided with the fluid injection opening (54) to each element cell opening of counting same number with element cell, separate fluid injection chamber (52) by surrounding this fluid injection with the next door (53) and the loam cake (4) of opening (54), make this fluid injection chamber (52) and described exhaust chamber (37) and outside batteries hermetic closed.

8. lead accumulator according to claim 1 is characterized in that,

Described middle cover (3) and loam cake (4) are made of thermoplastic resin forming body, on described middle cover (3) and the both sides of the inner face of loam cake (4) outer peripheral sidewall (65) is set, described exhaust chamber spaced walls (43,44,45), described element cell is communicated with the next door of cell (35), the next door (50) of described concentrated exhaust chamber (41), be divided into described exhaust cell (38,39,40) next door (46,47), melt by heat and to be bonded in outer peripheral sidewall (65) that middle cover (3) and loam cake (4) be provided with each other, isolate the inside and outside of battery, melt the exhaust chamber spaced walls (43 that is bonded in middle cover (3) and loam cake (4) setting by heat, 44,45) each other, form with element cell and count the exhaust chamber (37 of same number, 37 ', 37 "), form element cell and be communicated with cell (35); exhaust cell (38; 39; 40); concentrate exhaust chamber (41).

9. lead accumulator according to claim 8 is characterized in that,

Separate among the next door (50) of concentrated exhaust chamber (41) and exhaust chamber (37), at the thickness in the next door (50) that the inner face of loam cake (4) is provided with thickness greater than the next door (50) that on middle cover (3), is provided with.

10. lead accumulator according to claim 9 is characterized in that,

Lateral surface in the next door (50) that the inner face of described loam cake (4) is provided with is provided with the rib (74) that the short transverse of along this next door (50) is extended.

11. lead accumulator according to claim 8 is characterized in that,

Described middle cover (3) be provided with the contraposition of loam cake (4) when overlapping with pin (55), loam cake (4) be provided be used for and this contraposition with the chimeric tubular hole (66) of pin (55).

12. lead accumulator, has mechanism to outside batteries exhaust in the lump, this mechanism is by the battery cell case that holds a plurality of element cells (2), cover the top middle cover (3) of this battery cell case (2), covering the space that the loam cake (4) of the recess (31) of this middle cover (3) surrounded has with exhaust chamber spaced walls (43,44,45) that separate and exhaust chamber (37 described element cell same number, 37 ', 37 ") and with this exhaust chamber (37; 37 '; at least one concentrated exhaust chamber (41) that 37 ") are communicated with, at exhaust chamber (37,37 ', 37 " diapire) (32) have be communicated with described element cell and exhaust chamber (37; 37 '; the electrolyte refluxing opening (33) of 37 ") and gas discharge outlet (34), the gas that will produce from described element cell is via described exhaust chamber (37,37 ', 37 ") and concentrated exhaust chamber (41) to outside batteries exhaust in the lump; it is characterized in that

Described exhaust chamber (37,37 ', the wall towards element cell of the diapire (32) of 37 ") is provided with the cylindrical body (63) of surrounding described electrolyte refluxing opening (33) and the cylindrical body (62) of extending and surrounding gas discharge outlet (34) and extending in element cell in element cell, be provided with breach or open-work (75) at the wall of the encirclement described gas discharge outlet (34) and the cylindrical body (63) of extending in element cell.

13. lead accumulator according to claim 12 is characterized in that,

Described gas discharge outlet (34) is oval or rectangular opening.

14. lead accumulator according to claim 12 is characterized in that,

With described exhaust chamber (37,37 ', among the diapire (32) of 37 "), the local diapire (32 ') that is provided with described gas discharge outlet (34) is configured in and compares around it diapire away from the position of the electrolysis liquid surface of element cell.

15. lead accumulator, has mechanism to outside batteries exhaust in the lump, this mechanism has accommodates the element cell spaced walls (57 that disposes by uniformly-spaced, 58,59) battery cell case (2) of a plurality of element cells of isolating and mutually, cover the top middle cover (3) of this battery cell case (2) and cover the loam cake (4) of the recess (31) of this middle cover (3), described middle cover (3) has described element cell spaced walls (57 at the wall towards element cell, 58,59), has the exhaust chamber (37 that to separate to become by the recess (31) of described middle cover (3) and space that loam cake (4) is surrounded with the element cell same number at wall towards loam cake (4), 37 ', 37 " exhaust chamber spaced walls) (43; 44; 45); make adjacent exhaust chamber (37 by breach or the open-work (67) that is provided with in described exhaust chamber spaced walls (43; 44; 45), 37 ', 37 ") communicate with each other; exhaust chamber (37; 37 '; the opening (33 that 37 ") and element cell are provided with by the diapire (32) in middle cover (3), 34) be communicated with, have and described exhaust chamber (37,37 ', 37 ") at least one exhaust chamber (37) in abutting connection with and the concentrated exhaust chamber (41) that is communicated with this exhaust chamber (37); will import from the gas of described element cell generation described exhaust chamber (37; 37 '; after 37 "), via described concentrated exhaust chamber (41) to outside batteries exhaust in the lump, it is characterized in that

At least make to separate and compare element cell spaced walls (57) staggered positions that separates two element cells that are communicated with these two exhaust chambers (37,37 ') by opening (33,34) with part or all of the exhaust chamber spaced walls (43) of the exhaust chamber (37) of concentrated exhaust chamber (41) adjacency and the exhaust chamber (37 ') adjacent with this exhaust chamber (37).

16. lead accumulator according to claim 15 is characterized in that,

With the exhaust chamber that is positioned at the battery end (37) in abutting connection with configuration described concentrated exhaust chamber (41), part or all that makes described exhaust chamber spaced walls (43) compared element cell spaced walls (57) and staggered to the battery central side.

17. lead accumulator according to claim 16 is characterized in that,

With minor face (11) among the side of battery element cell spaced walls (57,58,59) is set abreast, with the exhaust chamber (37) of the end that is positioned at two minor faces (11) side in abutting connection with described concentrated exhaust chamber (41) is set.

18. lead accumulator according to claim 15 is characterized in that,

Be provided with suspension strut with hook (42) in the central authorities of two minor faces of described middle cover (3), part or all that makes exhaust chamber spaced walls (43) compared element cell spaced walls (57) staggered positions, described exhaust chamber spaced walls (43) separates and the exhaust chamber (37) of this minor face adjacency and adjacent exhaust chamber (37 '), and described element cell spaced walls (57) separates two element cells that are communicated with these two exhaust chambers (37,37 ') by opening (33,34).