CN101180749A - Battery module and its manufacturing method - Google Patents

Abstract

In a battery module of the invention, a first battery row and a second battery row have the same number of cylindrical batteries (2) arranged side by side, and both ends in the battery axis direction of each of the battery rows are held by holding frames (3). Each holding frame (3) is formed in a rectangular solid where an inner frame (4) and two outer frames (7, 8) are separably connected to each other. In each holding frame (3), semicircular arc-shaped cutout-like holding receiving sections (4a, 7b, 8b) of the same number as the number of the batteries in the battery rows are formed in both sides of the inner frame (4) and in those sides of the two outer frames (7, 8) which face the inner frame (4), and half sections of the cylindrical batteries (2) are fitted in the holding receiving sections (4a, 7b, 8b). Two adjacent cylindrical batteries (2) are electrically connected via an inter-battery connection plate (9).

Description

Battery module and manufacture method thereof

Technical field

The present invention relates to want in order to obtain the monocell of the required number of output voltage to arrange and be electrically connected and mechanically link and battery module that constitutes and the manufacture method that can assemble this battery module with high production rate.

Background technology

In recent years, the portability of AV equipment or electronic equipments such as personal computer and portable communication device and battery fast development, driving power as these electric equipments, because reliability is high and maintenance is easy, therefore, cadmium-nickel storage cell, nickel-hydrogen accumulator or lithium rechargeable battery etc. have been used.

On the other hand, in hybrid electric automobile,,, used nickel-hydrogen accumulator as the electric power source of the battery driven motor of the drive source that is used to travel by the combination internal combustion engine.In addition, in the purposes of the back standby emergency power supply unit when having a power failure etc. owing to disasters such as earthquake and typhoons, current main employing lead accumulator, but the practicability of the nickel-hydrogen accumulator of in the future big capacity of expectation and energy heavy-current discharge.In addition, also expectation will have the illumination of using when pantograph lifting that jumbo nickel-hydrogen accumulator is used in emergency power supply unit such as unmanned communication base station and electric car stops with supply unit or electric car power supply and light a lamp in the purposes with railway power supply source apparatus such as back-up power apparatus.

Aforesaid supply unit generally is between each heteropole power supply terminal that has interconnected in a plurality of cylindrical batteries and constitute battery module, has interconnected this battery module that needs number that is used to obtain the output voltage of wanting and has been assembled into power brick.The present patent application people has at first proposed for vibration and has impacted the battery module (for example, with reference to patent documentation 1) with strong fastness.

The structure of above-mentioned battery module has plastic support case, described support case have with the battery shaft of cylindrical battery to length formed the battery outer portion that row or multiple row connect about equally in the cuboid of thickness on thickness direction, described battery outer portion is the foursquare shape of facing that has with diameter one side about equally of cylindrical battery, and described battery module utilizes the tabular connecting plate to be electrically connected mutually between the heteropole of each 2 cylindrical battery of the adjacency in each cylindrical battery that is accommodated in one by one in each battery outer portion.The production method for electric device assembly and electric device assembly that interconnects each 2 cylindrical battery of adjacency is, in cylindrical battery, be formed near its periphery in the localities to the connection electrode portion of the outstanding ring-type of axial foreign side, the tabular connecting plate is striden in the connection electrode portion and the bottom surface of another cylindrical battery of frame in each 2 cylindrical battery of adjacency, utilize welding engaged respectively connecting plate and connection electrode portion and with each contact position of the bottom surface of battery container.

This battery module is owing to remain under the state of complete electric insulation by each cylindrical battery is accommodated in each battery outer portion, therefore, do not need dead ring and outer tubulature road, can realize the reduction of cost and the raising of productivity ratio, owing to fix each cylindrical battery under the state that joins in 4 places of each cylindrical battery periphery and 4 next doors that form battery outer portion, therefore, play for vibrating and impact the significant effect of not rocking and keeping reliably.

In addition, as existing power brick, known electric property and the mechanicalness a plurality of cylindrical batteries of row of having connected constitute battery modules, above becoming, insert the above-mentioned battery module of maintenance according to the configuration arranged side by side of multiple row multistage in the synthetic resin system support case of the square box-shaped of opening, in the support case, be positioned at the bus (for example, with reference to patent documentation 2) that is provided with on each end plate on the both ends between the terminal that is electrically connected battery module.Above-mentioned support case has formed battery module on end walls the monnolithic case of taking in several is the through hole of circle that is used to insert battery module of elongate cylindrical shape, simultaneously, between end walls, be provided with abreast and be used for the stable midfeather that keeps battery module, on this midfeather also with end walls with quantity ground opening circular through hole.This battery module is inserted in each through hole of end walls and midfeather and remains on the fixed position of support case.

This power brick can improve the bearing strength and the rigidity of battery module extraordinarily, simultaneously only just can be with battery module and busbar combination with the fastening operation of bolt etc., thus obtained to the support case operation of the battery module simple easy effect that becomes of packing into.

Patent documentation 1: TOHKEMY 2003-162993 communique

Patent documentation 2: Japanese kokai publication hei 10-270006 communique

But, in above-mentioned existing battery module, be predetermined the number that is accommodated in the battery in 1 battery module, therefore, each user and purposes are being expected under the situation of difform battery module, just must redesign and make the battery module of the structure that meets its shape, therefore just the problem that can not in time respond requirement be arranged.Also existing in addition needs the further problem of improvement.Promptly, the heat transmission hole of the cover of the both ends open of above-mentioned battery module by covering battery outer portion, space between the next door in four angles that are formed on the battery outer portion of having taken in each cylindrical battery, cylindrical battery and battery outer portion is communicated with, thereby guarantee the heat transmission path, the wind that utilization is flowed in lid heat transmission path obtains the cooling effect of each cylindrical battery, therefore, abundant inadequately for the cooling effect of more a plurality of cylindrical batteries.

And say the practicability of the large-scale cylindrical battery of expectation in the future as nickel-hydrogen accumulator with big capacity about 100Ah and the bigger weight about 1.6Kg.But can expect, in existing battery module, be difficult to be suitable for above-mentioned large-scale cylindrical battery on its structure and make its practicability.This be because, make above-mentioned battery module through the respectively welding sequence of 2 cylindrical batteries that in all batteries incorporating section of support case, inserts the operation of cylindrical battery one by one and utilize the welding at the both ends of connecting plate to interconnect the adjacency that is received in the battery outer portion respectively, it is contemplated that under the situation of the large-scale cylindrical battery of packing into through such operation, the operability variation, productivity significantly reduces.In addition, each cylindrical battery is fixed into a pair of cover of the both ends open on the thickness direction that utilizes inaccessible support case, close in the battery outer portion it upwards careless not mobile in battery shaft, therefore, under the situation of using large-scale cylindrical battery, be used for keeping reliably their fastness not enough, the intensity when being vibrated and impacting is a problem.

In addition, in above-mentioned battery module, after in each whole battery outer portion of support case, having taken in cylindrical battery, the two end portions by will striding the connecting plate that frame disposes on each 2 cylindrical battery of adjacency and the negative terminal solder bond of positive pole and another cylindrical battery of a cylindrical battery, be electrically connected each 2 cylindrical battery of adjacency mutually, make above-mentioned battery module through above-mentioned such operation, but in this welding sequence,, just must exchange the whole cylindrical battery that has been accommodated in the support case to joint one failure of any 1 cylindrical battery.In addition, in this battery module, become and be electrically connected whole cylindrical batteries by the connecting plate on the electrode terminal that is welded on whole cylindrical batteries, therefore, think that the cylindrical battery of a part has consumed under the situation with deterioration when safeguarding etc., must the communicating battery module all, operating cost increases.

On the other hand, the battery module that constitutes above-mentioned power brick has be covered electric property and mechanicalness of the resinous outer tubulature road with electric insulating quality and heat-shrinkable and is connected into all structures of the cylindrical battery of a number of wanting that is listed as, for example, configuration arranged side by side according to vertical 7 row of horizontal 3 row remains in the support case, and these each battery modules make air stream cool off to the cooling structure that the air export mouth flows from the air introducing port of support case with regard to utilizing.This cooling structure constitutes utilization and adjusts the plate main body of heat sink plate is adjusted flow direction from fin adjustment air stream to the outstanding cooling of two directions and flow velocity from cooling.Thereby, abundant for the cooling effect of each battery module in above-mentioned power brick, but owing to have the cooling structure of extremely complicated structure, so cost is quite high.

In addition, this power brick becomes in the inserting hole that forms in the both sides of support case end wall and cold sink plate respectively inserts the logical structure that keeps the battery module of elongate cylindrical shape, and described battery module is at battery shaft the connected cylindrical battery of regulation number of single-row configuration and electric property that makes progress.Thereby the heat that produces than compact battery in the purposes that the large-scale cylindrical battery that this power brick is stated in the use constitutes is many, therefore can not adopt eventually.In addition, outer peripheral face as a plurality of cylindrical batteries of the utilization welding series connection of the battery module of structural element is all covered by outer tubulature road, therefore, thinks that a part of cylindrical battery has consumed under the situation with deterioration when safeguarding etc., must the communicating battery module all, operating cost increases.

Summary of the invention

Therefore, the present invention is in view of above-mentioned existing problem, even its purpose is to provide a kind of large-scale battery also can high production rate and easily make, have sufficient radiating effect and fastness, also have the battery module of the structure that can only exchange the cylindrical battery that has consumed with deterioration simply in addition, and can be efficiently and the manufacture method of assembling this battery module exactly.

Realize the battery module of the present invention of above-mentioned purpose, have: a plurality of monocells; With the maintenance frame, constitute by a plurality of frame portion that has in that portion is born in the chimeric maintenance of a part of the outer peripheral face of above-mentioned monocell, utilize battery shaft that the maintenance portion of bearing of each frame portion of above-mentioned maintenance frame keeps above-mentioned monocell to both ends, each 2 monocell of adjacency are electrically connected mutually.。

By such formation,, therefore, obtain the outstanding effect of versatility owing to can freely assemble the maintenance frame that keeps monocell according to the structure of the battery module of expecting.

In addition, can monocell be cylindrical battery also, have: battery strings, a plurality of cylindrical batteries will battery shaft separately be parallel to each other configuration and side by side configuration form; With the maintenance frame, the battery shaft of above-mentioned cylindrical battery to freely the above-mentioned a plurality of frame portions of binding and one turn to cuboid and form with loading and unloading mutually at both ends, in the above-mentioned mutual relative frame portion that respectively keeps in the frame, set with the battery number of above-mentioned battery strings with quantity, bear portion with the maintenance of the outer surface butt of above-mentioned cylindrical battery, bear portion in the above-mentioned maintenance that respectively keeps each the mutual relative frame portion in the frame to be provided with, the battery shaft that grips above-mentioned cylindrical battery to both ends, the cylindrical battery that adjoins each other in the above-mentioned battery strings is electrically connected mutually by connecting plate between battery each other.

According to such structure, since each cylindrical battery that constitutes battery strings respectively with the maintenance frame keep each battery shaft to both ends, the outer surface except both ends of each cylindrical battery exposes externally, therefore, compare with existing battery module, radiating effect is especially high.In addition, owing to keep frame to become the structure that is divided into 2 frame portions at least, with be arranged on the battery shaft that keeps whole cylindrical batteries under the state that 2 each maintenance portions of bearing in each the frame portion that keeps frames sandwich to both ends, therefore, with need in this wise as existing battery module each cylindrical battery is inserted in the battery outer portion one by one or will connect that to insert the operation of leading in the through hole different for the battery strings of a plurality of cylindrical batteries in the battery shaft electric property that makes progress, even large-scale cylindrical battery also can easily be encased in it in regulation place that keeps frame.And, owing to keep frame to have the structure that freely has linked 2 frame portions, therefore, can easily decompose with loading and unloading, can only replace consumption or deterioration cylindrical battery.

In addition, have first battery strings and second battery strings as battery strings, this first battery strings and second battery strings by the cylindrical battery of same number each battery shaft is disposed in parallel to each other and respectively side by side configuration form; The battery shaft that is arranged on first and second battery strings to both ends respectively keep frame, freely load and unload link interior members of frame, housing parts that dispose along an one limit respectively mutually and another housing parts of disposing along another limit and one turn to cuboid and form; In above-mentioned the dual-side of members of frame, housing parts with above-mentioned in the limit of the relative side of members of frame and another housing parts with above-mentioned on the limit of the relative side of members of frame, set respectively with the battery number equal number of above-mentioned battery strings, bear portion with the outer surface butt of above-mentioned cylindrical battery and the maintenance that keeps; Be arranged in above-mentioned first battery strings each cylindrical battery battery shaft to both ends, gripped to be embedded into the state that above-mentioned each maintenance that respectively keeps mutual relative housing parts in the frame and interior members of frame bears in the portion, be arranged in above-mentioned second battery strings each cylindrical battery battery shaft to both ends, gripped to be embedded into the state that above-mentioned each maintenance that respectively keeps another mutual relative housing parts in the frame and interior members of frame bears in the portion, be electrically connected the cylindrical battery that adjoins each other in above-mentioned first and second battery strings mutually by connecting plate between battery, and, be electrically connected 2 cylindrical batteries that are positioned at each end in above-mentioned two battery strings mutually by connecting plate between battery.

According to such structure, since each cylindrical battery that constitutes first and second battery strings respectively with the maintenance frame keep each battery shaft to both ends, the outer surface except both ends of each cylindrical battery exposes externally, therefore, compare with the structure of taking in cylindrical battery as existing battery module in this wise in battery outer portion one by one, radiating effect is especially high.In addition, owing to keep frame to become the structure that is divided into interior members of frame and 2 housing parts at least, in these frame portions, form simultaneously the maintenance that the outer surface butt with cylindrical battery keeps and born portion, therefore, can the battery shaft that keeps frame portions to sandwich whole cylindrical batteries with 2 to the state at both ends under install and keep frame, therefore, with need in this wise as existing battery module each cylindrical battery is inserted in the battery outer portion one by one or will connect that to insert the operation of leading in the through hole different for the battery strings of a plurality of cylindrical batteries in the battery shaft electric property that makes progress, even large-scale cylindrical battery also can easily be encased in it in regulation place that keeps frame.And, owing to keep frame to have the structure that freely has linked interior members of frame and 2 housing parts, therefore, can easily decompose with loading and unloading, can only replace consumption or deterioration cylindrical battery.

In addition, owing to have semicircular arc with the corresponding radius of curvature of profile of battery if each that forms in each the frame portion with above-mentioned maintenance frame keeps the portion of bearing to be set at, just can each battery shaft that utilize to keep frame to fix being in cylindrical battery to both ends the time, making the maintenance of the semicircular arc that forms in each frame portion bear each 2 outer peripheral face for cylindrical battery in the portion, sandwich ground from both sides chimeric, therefore, bigger a little with the diameter that must set the through hole that is used for slotting logical cylindrical battery than the diameter of cylindrical battery, being provided for easy existing mode of inserting logical space compares, even large-scale cylindrical battery, maintenance frame that also can enough cuboids do not rock and also fixedly secure and the battery shaft that always stably keeps this each cylindrical battery to both ends, become structure with high fastness.

In addition, on bearing each position between portion, each maintenance of 2 of adjacency in the direction of the side of each frame portion of above-mentioned maintenance frame forms respectively screwed hole in the upwardly extending shape in side that is orthogonal to above-mentioned side, screw togather fastening by inserting fixed screw in the above-mentioned screwed hole that when relatively making up each frame portion mutually, connects, the free above-mentioned frame of binding portion just mutually with loading and unloading, at the weld part of connecting plate between self-contained battery on each positive terminal or the negative terminal, and screwed togather each 2 the cylindrical battery that behind each connecting portion that stretches out near direction, has been electrically connected adjacency from above-mentioned weld part mutually mutually with freely loading and unloading, according to this structure, think when safeguard waiting that the cylindrical battery of a part has consumed or the situation of deterioration under, as long as from keeping frame to pull out fixedly each screw of usefulness, just can will keep frame to be decomposed into interior members of frame and 2 housing parts simply by the utmost point, simultaneously by pull down fixedly each screw of usefulness from connecting plate between battery, just can be decomposed into cylindrical battery one by one, therefore, can easily only exchange necessary cylindrical battery.Therefore, also want all situations of communicating battery module to compare, have the outstanding advantage that can reduce operating cost significantly even this battery module has had a part of in this wise battery consumption or deterioration now with picture.

In addition, in interior members of frame, 2 relative maintenances are born and have been formed the cylindrical battery fixing hole that connects between each central portion in the portion between dual-side, inserted in fixing hole simultaneously and had shape and the flexible fixing latch of growing with the length dimension of fixing hole than this cylindrical battery of using at above-mentioned each cylindrical battery, according to this structure, the fixing outer surface that utilizes its elastic recovering force and opposed each cylindrical battery of 2 with latch that compresses in fixing hole at the cylindrical battery of interior members of frame in both sides, play the effect that absorbs the external force that has been subjected to vibration and has impacted when, therefore, can further not rock and stably keep each cylindrical battery.

In addition, keep in each outer surface side of a plurality of frame portion in frame at each, with each maintenance bear the part except middle body in the portion form from outer surface recessed inwards the lowland of step of regulation, utilization is in guided bearing portion that the linearity that extends in parallel in the orientation of portion is born in each 2 the maintenance that adjoins each other, from the recessed inwards position of outer surface, connect above-mentioned each maintenance and bear portion, from the recessed inwards position of outer surface, the guided bearing portion that utilizes linearity to extend, being connected to form in above-mentioned 2 maintenances on the end in the members of frame bears between portion, between relative 2 above-mentioned guided bearing portions, embed the connecting portion of connecting plate between battery, according to this structure, connecting plate and their screw bolt and nut of interfixing are included in regard to the existence that utilizes step and keep in the frame between each battery, all do not give prominence to outside, therefore, do not need special setting to be used to prevent the seal of the electric short circuit between cylindrical battery, simultaneously when use needs this battery module of number to constitute power brick, interfix by many battery modules of permutation and combination in length and breadth, just can easily constitute.In addition, limit the position owing to connecting plate between each battery is embedded between 2 relative guided bearing portions, therefore, so just constitute the higher structure of fastness, the best is applicable to the situation of large-scale cylindrical battery as monocell of using.And, under the positioning states that assembling the time is overlapping, further keep the connecting portion of connecting plate between each battery of 2 of adjacency reliably, improve the operability that screws togather.

In addition, the battery shaft that keeps each cylindrical battery to a distolateral maintenance frame and to keep another distolateral maintenance frame be identical shaped, keep above-mentioned another distolateral maintenance frame according to winding along the structural arrangements of the battery shaft rotation of the orientation of battery strings, according to this structure, since can utilize battery shaft that identical maintenance frame keeps each cylindrical battery in 2 battery strings to both ends, therefore, can reach further cost reduces.

In addition, 2 frame portions that utilize maintenance in the part have the outer peripheral face that is entrenched in monocell respectively to bear portion have constituted the maintenance frame in the above-mentioned battery module, according to this structure, can be according to the number and the structure of monocell, easily make the battery module that has constituted the fewer monocell of quantity.

In addition, maintenance frame in the above-mentioned battery module has the interior members of frame that 2 housing parts and two sides have the portion of bearing with the maintenance of shape, portion is born in the maintenance that described 2 housing parts have on single face respectively in the part of the outer peripheral face that is entrenched in monocell, combine above-mentioned housing parts with each face of above-mentioned interior members of frame, mutually relative above-mentioned in the maintenance of the members of frame maintenance of bearing portion and above-mentioned housing parts bear the above-mentioned monocell of clamping between the portion, perhaps in this battery module at the interior members of frame that has between 2 housing parts more than 2, according to this structure, can freely set the maintenance frame of the monocell of the corresponding quantity of capacity that can keep and expect.

In addition, if will keep the shape of the portion of bearing to form having semicircular arc with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of monocell, just can stably keep monocell.

In addition, portion is born in the maintenance that keeps a side of the mutual relative frame portion in the frame to have forming having the corresponding shape of radius of curvature more than the half cycle with monocell, another frame portion has the maintenance that forms the shape of corresponding radius of curvature below the half cycle that has with the outer peripheral face of monocell and bears portion, make these frame portion relative mutually with another frame portion in conjunction with the time, the shape that portion is born in the maintenance that forms both sides just becomes the circular shape with radius of curvature corresponding with the full week of the outer peripheral face of monocell, like this, before the combination that keeps frame, monocell has been embedded in the maintenance of a frame portion and has born in the portion, monocell is not offset from assigned position in conjunction with a frame portion and another frame portion the time, so the packaging efficiency of battery module improves.

In addition, the shape that keeps the portion of bearing formed make peace greatly and the consistent polygon of the corresponding radius of curvature of the outer peripheral face of monocell, perhaps form the semicircular arc that has with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of monocell, on the face of this semicircular arc, form a plurality of otch, the line that perhaps forms each summit that links step becomes the step shape of the semicircular arc consistent with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of monocell of making peace greatly, the line that perhaps forms each summit that links broach becomes the broach shape of the semicircular arc consistent with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of monocell of making peace greatly, like this, fixing monocell and bear a little gap of formation between the portion with maintenance exactly just at the outer peripheral face of monocell, therefore, can utilize these gaps to distribute the heat that when the discharging and recharging of battery, produces.

In addition, the shape that keeps the portion of bearing formed to have made up have and the circular arc portion of the corresponding radius of curvature of outer peripheral face of monocell and the shape of right angle part, like this, except cylindrical battery, also can keep rectangular cell in addition, when having kept cylindrical battery, keep the right angle part of the portion of bearing to play the function in the gap that is used to dispel the heat, when having kept rectangular cell, keep the circular arc portion of the portion of bearing to play the function in the gap that is used to dispel the heat.

In addition, constitute maintenance with material springy and bear portion,, obtain to suppress the effect of monocell skew in vibration and impact according to this structure.

In addition, according to making the end that keeps the portion of bearing extend out to the structure of the roughly overall dimension of monocell, can enough 1 frame portions keep the roughly all of monocell, therefore do not need to make the frame portion of a part that keeps monocell and the frame portion that keeps remainder, therefore, can realize being accompanied by the reduction of cost of the reduction of number of components.In addition,, only just can keep monocell all, therefore, can simplify the structure of another frame portion, realize the reduction of further cost in conjunction with flat board as another frame portion because the maintenance in this structure is born in the end of portion.

In addition, in said structure, to have maintenance that the end that keeps the portion of bearing extend out to the roughly overall dimension of monocell bear the interior members of frame of portion be combined into identical with the housing parts towards, the end of bearing portion with the maintenance of above-mentioned interior members of frame combines flat board, according to this structure, can either realize being accompanied by the reduction of cost of the reduction of number of components, the capacity that can freely set again with expectation keeps frame accordingly.

In addition, at this moment, be provided for the fixedly fixed part of monocell on the line consistent of making peace greatly in the end that keeps the portion of bearing with the corresponding radius of curvature of the outer peripheral face of monocell, like this, before the combination that keeps frame, monocell bears between portion and the fixed part with regard to the maintenance that is embedded in frame portion, make housing parts and interior members of frame and dull and stereotyped in conjunction with the time, monocell is not from the assigned position skew, and therefore, the packaging efficiency of battery module improves.

In addition, in the face that on the frame portion link direction each other of above-mentioned frame portion, extends, with the direction of the link direction quadrature of frame portion in form screwed hole, after having linked a plurality of frame portion, with the union body of the binding same length length of above-mentioned butt and frame portion, fixed screw by above-mentioned union body and above-mentioned screwed hole screw togather fastening fix to combine keep frame, according to this structure, utilize above-mentioned union body securely in conjunction with keeping frame, the rigidity of battery module improves.

In addition, each maintenance of 2 in adjacency in the direction of the side of each frame portion that keeps frame is born between portion, be respectively formed at the inserting hole that extends on the link direction equidirectional with frame portion, screw togather fastening by inserting ball screw in the above-mentioned inserting hole that when having linked a plurality of frame portion, has connected, fix in conjunction with keeping frame, according to this structure, the maintenance frame that can be enough easy sound construction ground combination is made of a plurality of frame portion.

Have again, at this moment, according to utilizing nut to screw togather the structure of fastening ball screw, just assembled battery module more neatly.

In addition, according to utilizing the fixing structure that keeps frame of base plate, case or framework, can easily supply with the outstanding battery module of versatility as power brick.

Have again, the manufacture method of the battery module of the present invention that is used to achieve the above object has: the semicircular arc that has only on top formed the regulation number every 2 of predetermined distance configurations keeps bearing housing parts of portion, bear an end of embedding cylindrical battery in the portion and separately half of another end in the maintenance of these 2 housing parts, and the operation of putting the cylindrical battery of regulation number; Be embedded in the maintenance of avris down in separately half of the end that makes above-mentioned cylindrical battery respectively and another end and bear under the state in the portion, make on top with bottom in formed the regulation number semicircular arc keep the operation of 2 the interior members of frame and above-mentioned 2 the housing parts butt of the portion of bearing; Be electrically connected the operation of each cylindrical battery of 2 of adjacency with connecting plate between battery; Above-mentioned cylindrical battery one distolateral and another distolateral in, utilize the operation fixedly screw togather above-mentioned 2 side's housing parts and above-mentioned 2 interior members of frame respectively; An end of embedding cylindrical battery in the portion and separately half of another end are born in the maintenance of avris on above-mentioned 2 interior members of frame, and the operation of putting the cylindrical battery of regulation number; Make respectively above-mentioned in these maintenances that generally are embedded into separately of a end of cylindrical battery on the members of frame and another end bear under the state in the portion, only make the semicircular arc that has formed the regulation number in bottom keep the operation of 2 another housing parts and above-mentioned 2 the interior members of frame butt of the portion of bearing; Be connected electrically in the operation of each cylindrical battery of 2 of adjacency between above-mentioned interior members of frame and another housing parts with connecting plate between battery; Above-mentioned cylindrical battery one distolateral and another distolateral in, utilize the operation fixedly screw togather another above-mentioned 2 housing parts and above-mentioned 2 interior members of frame respectively, utilize this manufacture method, constituted and utilized axial one distolateral and another a pair of maintenance frame in the distolateral battery module of a plurality of cylindrical batteries of clamping respectively that is provided in cylindrical battery.

According to this manufacture method, even under the situation of using large-scale cylindrical battery to constitute, also can be enough with the maintenance portion of bearing of the corresponding shape of shape of the outer peripheral face of cylindrical battery easily and the battery shaft of extremely fixing to efficient these each cylindrical batteries to both ends, make battery module of the present invention with high production rate.

Have again, before assembling procedure, with above-mentioned 2 housing parts every predetermined distance be configured to the assembling with the base station shape after the utilization screw togather carry out temporary fixed, after finishing, the assembling of battery module unloads above-mentioned assembling base station, like this, even large-scale cylindrical battery also can utilize accurate in locating to stablize and carry out exactly the packing into to 2 maintenance frames of these cylindrical batteries on assembling with base station.

In addition, after butt under the state that makes the inside casing piece cover on housing parts, respectively to connect above-mentioned in each relative maintenance of 2 in the members of frame bear in each cylindrical battery usefulness fixing hole between each middle body of portion, insertion has than shape and flexible fixing the use latch of this cylindrical battery with the length dimension length of fixing hole, make this fixing with latch the tip and the outer surface butt of above-mentioned cylindrical battery after withstand above-mentioned cylindrical battery, utilization screws togather and makes above-mentioned interior members of frame and 2 housing parts integrations form the maintenance frames, pushing said fixing respectively with each outer surface in the cylindrical battery of these both end sides makes it compress in fixing hole at above-mentioned cylindrical battery with latch, like this, just can utilize the fixing latch of using, under oriented state, remain in connecting plate between each battery in each cylindrical battery of 2 of adjacency, therefore, screw togather that the operability of connecting plate further improves between battery, and, because compression is fixing with the outer surface butt that can enough its elastic recovering forces after the latch makes it with relative 2 cylindrical battery exactly, so can become freedom from vibration and the outstanding structure of impact resistance.

In addition, according to the outstanding round about mutually configuration of the connecting portion of connecting plate between a pair of battery or above-mentioned connecting portion mutually to the outstanding configuration of orthogonal direction, each weld part of connecting plate in advance and between the fixing a pair of battery of the positive lateral electrode terminal of each cylindrical battery and minus side electrode terminal welding, after the maintenance frame has been installed above-mentioned cylindrical battery, make from the connecting portion of each cylindrical battery of 2 of adjoining each other connecting plate between outstanding 2 batteries of the direction that is positioned at mutually close position and overlap and screw togather, be electrically connected each cylindrical battery of 2 of adjacency mutually, like this, just can utilize and screw togather mutual electrical connection and mechanicalness links connecting plate between the battery of predetermined fixed on them, therefore, do not need to be used in this wise being electrically connected the welding sequence of the cylindrical battery that is enclosed in support case etc. as existing battery module, owing to cut down this welding sequence, even under with the situation of large-scale cylindrical battery as structural element, also can be easily and efficient interconnect and assemble.

Description of drawings

Fig. 1 is the approximate three-dimensional map of appearance images that the battery module of an embodiment of the invention is shown.

Fig. 2 is the stereogram that connecting plate between the battery of each cylindrical battery of 2 of the adjacency that is used for being electrically connected mutually above-mentioned battery module is shown.

Fig. 3 A illustrates to use connecting plate between above-mentioned battery to be electrically connected the stereogram of production method for electric device assembly and electric device assembly of 2 cylindrical batteries of adjacency mutually, and Fig. 3 B is the amplification profile that the A-A line along Fig. 3 A cuts off.

Fig. 4 A～Fig. 4 B be illustrated in respectively constitute implement in advance before the above-mentioned battery module to cylindrical battery the stereogram of the mode of connecting plate between battery is installed.

Fig. 5 is the front view that only shows the connection status of the whole cylindrical batteries in the above-mentioned battery module.

Fig. 6 is the summary decomposition elevation that is used to illustrate the assembling process of above-mentioned battery module.

Fig. 7 is a stereogram of only seeing the maintenance frame the above-mentioned battery module from foreign side's side of battery module.

Fig. 8 is a stereogram of seeing above-mentioned maintenance frame from the inboard of battery module.

Fig. 9 is the stereogram that has cut off a part of above-mentioned maintenance frame.

Figure 10 is the front view of above-mentioned battery module.

Figure 11 is the plane graph of above-mentioned battery module.

Figure 12 is the plane graph of structure that the maintenance frame of other examples of the present invention is shown.

Figure 13 A is illustrated in the plane graph that has used the structure of 1 interior members of frame in the above-mentioned maintenance frame, and Figure 13 B is the plane graph that the structure of having used 2 interior members of frame is shown.

Figure 14 shows the figure in conjunction with an example of maintenance frame of the present invention.

Figure 15 shows the figure in conjunction with the other example of maintenance frame of the present invention.

Figure 16 illustrates to be provided with the plane graph of structure that the housing parts of portion are born in polygonal maintenance.

Figure 17 illustrates to be provided with the plane graph of structure that the housing parts of portion are born in the maintenance that is combined into by circular arc portion and right angle part.

Figure 18 illustrates to be provided with the plane graph of structure that the housing parts of portion are born in the maintenance with otch.

Figure 19 illustrates to be provided with the plane graph of structure that the housing parts of portion are born in step-like maintenance.

Figure 20 A～Figure 20 B illustrates and is provided with the structure that the housing parts of portion are born in the maintenance with hollow hole part and ventilation road, and Figure 20 A is a plane graph, and Figure 20 B is the enlarged drawing of major part.

Figure 21 illustrates the plane graph of structure that the housing parts of portion are born in the maintenance that is provided with the broach shape.

Figure 22 is illustrated in the major part enlarged drawing that the structure of the housing parts that have many projections in the portion is born in maintenance.

Figure 23 is the plane graph that the structure of the maintenance frame in the other example of the present invention is shown.

Figure 24 is the plane graph that the structure of the housing parts in the other example of the present invention is shown.

Figure 25 A is the plane graph that the structure of the maintenance frame that has used the tabular housing parts of above-mentioned housing parts peace is shown, and Figure 25 B illustrates the plane graph of structure of maintenance frame of interior members of frame of shape that the both ends of having used tabular housing parts of above-mentioned housing parts peace and maintenance to bear portion extend out to the roughly peripheral dimension of monocell.

Figure 26 is that the plane graph of the structure that is provided with the fixed part that is used for fixing monocell in the portion is born in the maintenance that is illustrated in above-mentioned housing parts and/or interior members of frame.

Embodiment

Below, with reference to accompanying drawing, describe preferred forms of the present invention in detail.Fig. 1 is the approximate three-dimensional map of appearance images that the battery module 1 of an embodiment of the invention is shown.This battery module 1 following formation: divide 2 sections setting battery strings up and down, described battery strings is that 10 cylindrical batteries 2 are formed according to having disposed 5 side by side along the configuration of battery axially parallel; Respectively with keep frame 3 fixing keep this battery shaft that amounts to 10 cylindrical batteries 2 to both ends.In addition, in this battery module 1, be connected under the state that the outer surface of 10 cylindrical batteries 2 except both ends separately is exposed on the external, therefore compare, especially improve radiating effect with existing structure of in battery outer portion, taking in cylindrical battery respectively.

In addition, in the present embodiment illustration as cylindrical battery 2, use the situation of the large cylinder-shaped battery 2 as nickel-hydrogen accumulator with big capacity about 100Ah and the bigger weight about 1.6Kg, even this battery module 1 aforesaid large cylinder-shaped battery 2, also can high production rate and assemble efficiently, and can become structure with sufficient fastness.About being described in detail after this.

By members of frame in the mutual combination 4 and be configured in its up and down first and second housing parts 7,8 and can fix with freely loading and unloading, with a pair of maintenance frame 3 on the front and back position of Fig. 1 as a whole and one turns to the cuboid with rectangular profile.Interior members of frame 4 and first, second housing parts 7,8 all are the one-body molded product of being made by synthetic resin, but also can be the one-body molded product made of aluminum of having considered thermal diffusivity, and in addition, a pair of maintenance frame 3 before and after being configured in is all identical.But, this a pair of maintenance frame 3 according to mutually in the opposite direction and the relative position of upper-lower position upset dispose in parallel to each other.By under the state that has overlapped the part of connecting plate 9 between the battery of fixing one by one, utilize the fastening binding that screws togather of bolt 10 and nut (not shown), will on the battery strings direction, be electrically connected mutually by each 2 cylindrical battery 2 of adjacency.Battery module 1 shown in Fig. 1 is an example that keeps the structure of 10 cylindrical batteries 2, but if use maintenance frame 3 of the present invention like this, the maintenance frame that does not just need to make the special use that is used to keep 10 cylindrical batteries 2, by the independent assortment first housing parts 7, the second housing parts 8 and interior members of frame 4, can constitute the battery module that has different different shapes for various users and purposes, obtain in time to solve the extraordinary effect of versatility of various requirement.Below, describe successively about the details of this battery module 1.

Fig. 2 is the stereogram that connecting plate 9 between above-mentioned battery is shown, and connecting plate 9 only has a kind of identical shape between this battery.That is, utilize connecting plate 9 mutual each 2 cylindrical battery 2 that is electrically connected whole adjacency between identical battery.Connecting plate 9 has to have connected integratedly with the welding means by stage portion 13 and is fixed on the weld part 11 on the battery case described later and the shape of the connecting portion 12 that stretches out from this weld part 11 between this battery, and weld part 11 becomes the lowland with respect to connecting portion 12 dented stage portion 13.

Fig. 3 A illustrates to use connecting plate 9 between above-mentioned battery to be electrically connected each 2 cylindrical battery 2 of adjacency mutually, and the stereogram of the production method for electric device assembly and electric device assembly that has mechanically linked, Fig. 3 B illustrates the amplification profile that cuts off along the A-A line of Fig. 3 A respectively, with reference to the remark additionally shape of connecting plate 9 between above-mentioned battery of Fig. 3 A～3B.Above-mentioned weld part 11 has the shape of the semicircular arc that comprises in the circular end surface in the battery container 14 of cylindrical battery 2.Specifically, shape with the semi arch that surrounds with perimembranous 11a in semicircular and semicircular peripheral part 11b, perimembranous 11a has the bigger a little radius of curvature of all end faces than the electrode tip daughter board 17 of the circle that has formed cylindrical battery 2 in described, described peripheral part 11b have with battery container 14 in the corresponding radius of curvature of inner peripheral surface of caulking part 18 of circle of open end side.On this weld part 11, be provided with the salient point 19 that a plurality of (being 4 in this embodiment) means of spot welds is used, and the position between each 2 salient point 19 of adjacency is formed with slit 20.

Above-mentioned connecting portion 12 roughly forms rectangle, have an opposite side 12a, 12b and with the end limit 12c of this side 12a, 12b quadrature, one opposite side 12a, 12b be greater than the distance between the both ends of weld part 11, and stretch out in parallel to each other from weld part 11 with the interval smaller a little than the diameter of battery container 14.Formed central portion from end limit 12c to the slit 21 that dual- side 12a, 12b extend in parallel in this connecting portion 12, simultaneously the position has formed a pair of binding with hole 22 near the both ends of end limit 12c.Have again, as shown in Figure 2, in connecting portion 12 sometimes also in advance be welded on its lower face side with link with hole 22 consistent location on fix a pair of nut 23.

Above-mentioned stage portion 13 is semicircular arcs of overlooking that the semicircular external 11b from weld part 11 erects, the lateral surface of connecting portion 12 sides is formed the semicircular arc of the consistent radius of curvature of interior lateral circle surface in the caulking part 18 with the open end of battery container 14, and have the bigger a little height of distance of 18 axial end portion from hush panel 24 to caulking part than cylindrical battery 2.To process the material of nickel or nickel, iron, copper as the material material at the upper surface of single face at least of iron or copper, integrally formed have by stage portion 13 connected connecting plate 9 between the battery of shape of weld part 11 and connecting portion 12 integratedly, and be set at low resistance.

Have, the cylindrical battery 2 of connecting object that becomes the battery module 1 of present embodiment is aforesaid big capacity and large-scale nickel-hydrogen accumulator again, then, with reference to Fig. 3 B, describes about the schematic configuration of this cylindrical battery 2.This cylindrical battery 2 utilizes an end opening portion of the battery container that round-ended cylinder shape is arranged 14 of seal body 32 inaccessible double as negative poles, and this seal body 32 comprises: hush panel 24, the electrode tip daughter board 17 that engages with the outside of this hush panel 24, be fixed on this electrode tip daughter board 17 central portion section U word shape gap-like positive terminal 29 and be configured in rubber valve body 30 and insulated enclosure pad 31 in the space between this gap-like positive terminal 29 and the electrode tip daughter board 17.

The open end of the circumference of above-mentioned hush panel 24 and battery container 14, the riveting of undergauge is processed to form caulking part 18 by implementing to the inside to the open end of battery container 14 under the state that insulated enclosure pad 31 is set between them, by utilizing the insulated enclosure pad 31 of these caulking part 18 compressions, at the circumference of the fixing above-mentioned hush panel 24 of mutual airtight conditions lower seal and the open end of battery container 14.Connecting plate 9 can not cause battery container 14 and hush panel 24 electrical shorts by the existing of the dead ring 27 installed with the state that covers caulking part 18 between battery.Because weld part 11 has the shape of the semicircular arc in the circular end surface that is included in the battery container 14, therefore, can be with the positive terminal in having engaged cylindrical battery 2 hush panel 24 of gap-like positive terminal 29 and the battery container 14 that becomes negative terminal bottom surface 28 both connecting plate 9 between above-mentioned battery commonly is installed.

When welding weld part 11 is installed between battery connecting plate 9 on the hush panel 24 of cylindrical battery 2, after weld part 11 being positioned on the hush panel 24 of cylindrical battery 2, the lateral surface one of stage portion 13 is attached on the interior lateral circle surface of dead ring 27, just the lateral surface of stage portion 13 is formed semicircular arc with the roughly consistent radius of curvature of the interior lateral circle surface of dead ring 27, therefore, at the lateral surface of having located stage portion 13 for the roughly chimeric state lower seal of the interior lateral circle surface of dead ring 27, therefore, can under the state that has stably kept connecting plate 9 between battery weld part 11 be welded on the hush panel 24.Therefore, can between weld part 11 that is welded to each other and hush panel 24, obtain the high engagement state of fastness always not at random and that have high weld strength.

When above-mentioned welding, make welding electrode respectively with weld part 11 in carry out projection welding with a pair of salient point 19 corresponding position butts.Like this, the salient point 19 that the little contact resistance of contact area is big so welding current flows to regard to concentration of local ground and the contact portion of hush panel 24 utilize its heat that sends, and weld part 11 and hush panel 24 are bonded with each other after salient point 19 fusions.At this moment, the idle current the when slit 20 of weld part 11 reduces projection welding can make the hush panel 24 and the distortion of weld part 11 absorb simultaneously easily owing to there being slit 20, therefore can weld reliably.

On the other hand, when connecting plate 9 between the bottom surface 28 welded and installed batteries of the battery container 14 of cylindrical battery 2, weld part 11 is attached on the bottom surface 28 of the battery container 14 in the cylindrical battery 2, carries out projection welding under in making welding electrode and weld part 11 respectively and the states a pair of salient point 19 corresponding position butts.Like this, the salient point 19 that the little contact resistance of contact area is big so welding current flows to regard to concentration of local ground and the contact portion of bottom surface 28 utilize its heat that sends, and weld part 11 and bottom surface 28 are bonded with each other after salient point 19 fusions.At this moment, the idle current the when slit of weld part 11 20 reduces projection weldings, and can make weld part 11 and bottom surface 28 absorb different distortion mutually easily by distortion owing to there is slit 20, therefore can weld reliably.

Then, shown in Fig. 3 A～3B, along battery shaft under the situation of 2 cylindrical batteries 2 of configured in parallel electric diametrically property ground series connection with them, make the open end side and the bottom surface 28 difference radius vectors of the battery container 14 the connecting plate 9 between 2 batteries overlap configuration towards rightabout mutually to each outstanding connecting portion 12 of foreign side, be positioned at and make on the position of each a pair of binding with hole (not shown) consistent relative configuration of inserting logical illustrated bolt 10, fastening by screwing togather from the nut 23 that each 2 binding of coincidence status are inserted the bolt 10 that leads to and opposite side with the side in hole, connecting plate 9 between above-mentioned 2 battery is connected into the state of mutual electrical connection.When this connects, can therefore can weld accurately easily by the mutual different distortion of connecting plate 9 between distortion absorption both sides' battery owing to there is each slit 21.Have again, this production method for electric device assembly and electric device assembly is all commonly installed connecting plate 9 between identical battery with the hush panel 24 and the bottom surface 28 of the side of the positive electrode of battery container 14, but if in advance on a face of connecting plate 9 between the battery that usefulness is installed to the bottom surface 28 of battery container 14, utilization is welded on and links with hold-down nut 23 on the hole consistent location, then can be more easily and promptly carry out above-mentioned binding operation.

At each cylindrical battery 2 of the battery module 1 that is used for pie graph 1, before making, utilize in advance to be welded on connecting plate 9 between battery is installed under the installment state that illustrates respectively among Fig. 4 A～4B.Under the situation of the battery module 1 that constitutes 10 cylindrical batteries 2 of having connected as shown in Figure 1, on 8 cylindrical batteries 2 in these 10, shown in Fig. 4 A, according to their connecting portion 12 towards the outstanding configuration of mutually opposite direction, utilize welding respectively, engage connecting plate 9 between a pair of battery with the hush panel 24 and the bottom surface 28 of the side of the positive electrode of battery container 14.In remaining 2 cylindrical batteries 2, respectively as using among Fig. 4 B shown in solid line and the double dot dash line, respectively in the outstanding 2 kinds of configurations of different orthogonal directions, utilize welding to engage connecting plate 9 between a pair of battery with the hush panel 24 and the bottom surface 28 of the side of the positive electrode of battery container 14 in advance according to their connecting portion 12 respectively.Have again, in this embodiment, according to link with the consistent configuration in hole 22, utilizing welding to be fixed on nut 23 with the bottom surface 28 of battery container 14 in advance is between the battery that is connected of negative terminal on the connecting plate 9.

Fig. 5 only shows the connection status of 10 cylindrical batteries 2 in the battery module 1 of Fig. 1.8 cylindrical batteries 2 except left end 2 cylindrical battery 2A, the 2B up and down that are positioned at this figure, all fixed connecting plate 9 between a pair of battery according to the configuration of Fig. 4 A in advance, for each 2 cylindrical battery 2 of adjacency respectively, be electrically connected mutually according to production method for electric device assembly and electric device assembly illustrated in fig. 3 at figure the place ahead and rear.The cylindrical battery 2A on left end top in Fig. 4 B with predetermined fixed in the configuration shown in the double dot dash line connecting plate 9 between a pair of battery, and the cylindrical battery 2B of left end bottom in Fig. 4 B with predetermined fixed in the configuration shown in the solid line connecting plate 9 between a pair of battery, this left end cylindrical battery 2A, 2B up and down is electrically connected by connecting plate 9 between each battery mutually at the rear of figure.Like this, 10 cylindrical batteries 2,2A, 2B are connected, at the figure at the both ends that are arranged in this series connection right-hand member cylindrical battery 2 up and down, utilize bolt 10, on the connecting portion 12 of connecting plate 9 between the fixing battery in the place ahead of each figure, outside terminal for connecting plate 33 has been installed.Externally be provided with terminal screw 34 on the terminal for connecting plate 33.

Then, the assembling procedure about the battery module 1 of Fig. 1 describes.Fig. 6 is the summary decomposition elevation that is used to illustrate the number of assembling steps of battery module 1, among this figure illustration be the state of Fig. 1 according to state from the battery module 1 that spun upside down Fig. 1, the configuration of the transposing situation of assembling mutually around about the vertical axle rotation back of cylindrical battery 2.In addition, the same maintenance frame 3 that constitutes by interior members of frame 4 and first, second housing parts 7,8 of configuration assembling on the front and back position of Fig. 6.But, spin upside down after the horizontal rotational shaft of left and right directions by the maintenance frame 3 that makes illustrated front face side, make the maintenance frame 3 of rear side is arranged to respect to the maintenance frame 3 of front side towards on the contrary.

At first, at the front side difference mounting first housing parts 7 of assembling with the figure in the base station 37, the rear side mounting second housing parts 8 at figure, with each 3 screwed hole 7a, the 8a that is provided with in these housing parts 7,8 be positioned to assemble with the installing hole 37a of base station 37 consistent after, make bolt 38 insert logical each installing hole 37a and screw togather with screwed hole 7a, 8a.Like this, just in assembling with the front side and the rear side of base station 37, relative configuration according to the rules is promptly under in accordance with regulations the opposed positioning states of spaced and parallel, the temporary fixed first housing parts 7 and the second housing parts 8.

Then, be in be temporarily fixed at assembling in each top on the first and second housing parts 7,8 on the front and back position on the base station 37 per respectively 5 maintenances that form the semicircle arcuation of an incision-like bear among the 7b of portion, the 8b, from above under the state that falls into embedding cylindrical battery 2,2A battery shaft to both ends.At this moment, begin the configuration that after the axle rotation of left and right directions, spins upside down, embed 5 cylindrical batteries 2,2A according to shown position from Fig. 5.Like this, 5 cylindrical batteries 2,2A just bear the 7b of portion and are in maintenance in the second housing parts 8 of rear side and bear under the state on the 8b of portion striding maintenance that frame is being in the first housing parts 7 of front side, embed and be supported each battery shaft to both ends.Above-mentioned maintenance is born the 7b of portion, 8b and is formed the semicircular arc that has with the corresponding radius of curvature of profile of cylindrical battery 2,2A, and half one at the both ends of cylindrical battery 2,2A remains on and keeps bearing the chimeric state of the 7b of portion, 8b.

Then, on the first and second housing parts 7,8 of front and back, cover inside casing parts 4 respectively, make half one of each cylindrical battery 2,2A be embedded into the maintenance that an avris below interior members of frame 4 forms the semicircular arc of incision-like and bear in the 4a of portion.This maintenance is born the 4a of portion and is formed the semicircular arc that has with the corresponding radius of curvature of profile of cylindrical battery 2,2A, the inner face 4c of the outer face 4b at the both ends of interior members of frame 4 and its inside respectively with the both ends that are in the first and second housing parts 7,8 in outer face 7c, 8c and inner face 7d, the 8d butt of its inside.Thereby, with the maintenance of bearing the 7b of portion, 8b and interior members of frame 4 with the maintenance of the first and second housing parts 7,8 bear the 4a of portion from sandwich up and down battery shaft to the state in full week of outer peripheral face at both ends, keep 5 cylindrical batteries 2,2A.

Then, with members of frame in utilizing 4 and first, second housing parts 7,8 keeping battery shaft to 5 cylindrical batteries 2, the 2A at both ends, the binding that is positioned to be separately fixed at the connecting portion 12 in the connecting plate 9 between the battery on each 2 of adjacency of cylindrical battery 2,2A is consistent with each other with hole 22.In this positioning states, 5 cylindrical batteries connecting of the central portion keeping bearing the 4a of portion from the interior members of frame 4 forwards, backwards of top insert fixing with rubber bolt 40 with fixing hole 4d respectively as shown by arrows.The outer surface butt of the lower end of this each fixing usefulness rubber bolt 40 and cylindrical battery 2,2A.Have, fixing have than the cylindrical battery longer a little size of fixing hole 4d with rubber bolt 40 again, outstanding a little with the upper end open of the figure of fixing hole 4d from cylindrical battery in the insertion state.

As mentioned above, under the state of the connecting portion 12 between the battery that has overlapped each cylindrical battery 2 of 2 of adjacency, 2A in the connecting plate 9,, utilize fastening 5 cylindrical batteries 2, the 2A of interconnecting that screw togather of bolt 10 and nut 23 by linking with hole 22.Like this, the cylindrical battery 2 of 5 of hypomeres, 2A just series connection constitute first battery strings.But it is outstanding upward that connecting plate 9 between the battery that is fixed on the rear side of the cylindrical battery 2A that is in Fig. 6 right-hand member is arranged to its connecting portion 12, at this moment not with other battery between connecting plate 9 be connected.During owing to connecting plate 9 between each battery of 2 of binding, according to nut 23 and link with the consistent configuration in hole 22, predetermined fixed is on the connecting portion 12 promptly inboard near the cylindrical battery 2 in 2 connecting portions 12 that overlap, 2A, therefore, as long as bolt 10 inserted 2 bindings of leading to coincidence status with in the hole 22 and screw togather just passablely, can promptly carry out with easy operation with nut 23.

In addition, with each 4 fixed screw 39 of front and back, from assembling each inserting hole 37b with the front and back of base station 37, by the inserting hole 7e in the first housing parts 7 that are in front side be in inserting hole 8e in the second housing parts 8 of rear side, screw togather fasteningly with each screwed hole 4e of the lower side of interior members of frame 4 respectively, and link first housing parts 7 of front side and the second housing parts 8 and interior members of frame 4 of interior members of frame 4 and rear side respectively mutually.Like this, 5 cylindrical batteries 2,2A just utilize incorporate in members of frame 4 and the first housing parts 7 and the second housing parts 8 firmly fixed respectively battery shaft to both ends.In other words, bear the 4a of portion in the maintenance of the maintenance of the first and second housing parts 7,8 being born the 7b of portion, 8b and interior members of frame 4 and seamlessly run through under the state in the fit retaining hole that forms the both ends that keep 5 cylindrical batteries 2,2A respectively.

Then, begin around the horizontal rotational shaft of left and right directions and the configuration that spins upside down according to shown position from Fig. 5, with epimere 5 cylindrical batteries 2,2B be embedded in each of front and back members of frame 4 above other limits on the maintenance of the semicircular arc that forms bear among the 4a of portion.The maintenance of members of frame 4 is born the 4a of portion and is formed the semicircular arc that has with the corresponding radius of curvature of profile of cylindrical battery 2,2A in above-mentioned.Therefore, each battery shaft of 5 cylindrical batteries 2,2B to the both ends maintenance that almost seamlessly is embedded into the interior members of frame 4 of front side and rear side bear among the 4a of portion, stride frame and bear on the 4a of portion in the maintenance of front and back.

Then, cover the second and first housing parts 8,7 respectively on the interior members of frame 4 of front and back, the maintenance that makes the first half of each cylindrical battery 2,2A be embedded into the semicircular arc that forms in the second and first housing parts 8,7 is born in the 8b of portion, the 7b.This maintenance is born the 8b of portion, 7b and is also formed the semicircular arc that has with the corresponding radius of curvature of profile of cylindrical battery 2,2B, be in inner face 8d, the 7d of outer face 8c, the 7c at the both ends in the second and first housing parts 8,7 and their the insides, respectively with the outer face 4b at the both ends of interior members of frame 4 and the inner face 4c butt of its inside.Thereby, bear the maintenance of the 8b of portion, 7b and interior members of frame 4 in the maintenance that utilizes the second and first housing parts 8,7 and bear the 4a of portion, from seamlessly sandwich up and down battery shaft to the state in full week of outer peripheral face at both ends under, keep 5 cylindrical batteries 2,2B.

Then, 5 cylindrical batteries 2,2B orientate as with epimere, and the binding of the connecting portion 12 between the battery of fixing respectively in each 2 of adjacency on their battery strings direction in the connecting plate 9 is consistent with each other with hole 22.Give prominence to the fixing of some by each cylindrical battery a little with the upper end open of fixing hole 4d with the outer surface butt of rubber bolt 40 with self from interior members of frame 4, withstand each cylindrical battery 2,2B behind this location, the binding that remains on the connecting portion in the connecting plate 9 12 between battery is with hole 22 positioning states consistent with each other.

Under the hold mode of having withstood epimere 5 cylindrical batteries 2,2B as mentioned above, utilize the slotting bolt 10 that leads in the intercommunicating pore 22 fastening with screwing togather of nut 23, interconnect each connecting portion 12 in the connecting plate 9 between the battery of each 2 cylindrical battery 2 of being in adjacency on the battery strings direction, 2B, and utilize screwing togather of bolt 10 and nut 23 fastening, interconnect the cylindrical battery 2B of right-hand member and each connecting portion 12 of the cylindrical battery 2A below its.10 cylindrical batteries 2,2A, 2B like this, just all connect.When linking between above-mentioned each battery of 2 connecting plate 9, because according to nut 23 configuration consistent with linking usefulness hole 22, with the close cylindrical battery 2 of nut 23 predetermined fixed in 2 connecting portions 12 that overlap, the connecting portion 12 of 2A, therefore, as long as bolt 10 inserted 2 bindings of leading to coincidence status with coming in the hole 22 and nut 23 screws togather just passablely, can promptly carry out with easy operation.

At last, to illustrate same fixed screw 39 with the below, by the inserting hole 8e in the second housing parts 8 that are in front side be in inserting hole 7e in the first housing parts 7 of rear side, screw togather fasteningly with the screwed hole 4f of the upper side of interior members of frame 4 respectively, link second housing parts 8 of front side and the first housing parts 7 and interior members of frame 4 of interior members of frame 4 and rear side respectively mutually.Like this, 5 cylindrical batteries 2 of epimere, 2B just utilize incorporate in members of frame 4 and the second housing parts 8 and the first housing parts 7 keeping securely respectively battery shaft to both ends, form second battery strings, finished the assembling of the battery module 1 of Fig. 1.

In the battery module 1 after this assembling is finished, utilize the fastening of fixed screw 39 up and down, under 5 fixing states that compress from the pressure that is subjected to cylindrical battery 2,2A, 2B up and down with rubber bolt 40, be pressed into cylindrical battery with in the fixing hole 4d, play with its recuperability being crimped on cylindrical battery 2 up and down, 2A, the 2B, do not keep the function of cylindrical battery 2,2A, 2B loosely.At last, pull out bolt 38 and unload assembling base station 37.

The battery module 1 of present embodiment is by assembling through aforesaid operation, though having about the 1.6kg that states in the use than under the situation of greater weight cylindrical battery 2 as monocell, also can be easily and efficient ground assemble.Promptly, since keep frame 3 be three be divided in the structure of members of frame 4 and first, second housing parts 7,8, therefore, the maintenance that can be with whole cylindrical battery 2 be inserted into each frame portion 4,7,8 from the top with the state that falls into is one by one born in the 4a of portion, 7b, the 8b and is assembled.Thereby, with need in this wise as existing battery module each cylindrical battery is inserted in the battery outer portion one by one or will connect that to insert the operation of leading in the through hole different for the battery strings of a plurality of cylindrical batteries 2 in the battery shaft electric property that makes progress, even large-scale cylindrical battery 2 also can be encased in it easily in the regulation place that keeps frame 3 and keeps.

In addition, can utilize screwing togather of bolt 10 and nut 23 fastening, electrical connection and mechanicalness link connecting plate 9 between the battery of predetermined fixed on being arranged on each cylindrical battery 2 that keeps in the frame 3 mutually.Therefore, do not need as existing battery module, to be used for being electrically connected the welding sequence of cylindrical battery 2 of support case etc. of having packed into, owing to cut down this welding sequence, therefore even under with the situation of large-scale cylindrical battery 2 as structural element, also can be easily and interconnect efficiently and assemble.

In addition, when assembled battery module 1, be temporarily fixed at assembling with location, back on the base station 37 owing at first will be configured in the first and second housing parts 7,8 on front and back position the most the next, therefore, can stablize and carry out packing into of large cylinder-shaped battery 2 exactly.

On the other hand, when the both ends that each battery shaft of utilizing maintenance frame 3 to be fixed in cylindrical battery 2 makes progress, since make in each frame portion 4,7,8 maintenance of the semicircular arc that forms bear each 2 outer peripheral face among the 4a of portion, 7b, the 8b with respect to cylindrical battery 2 sandwich from both sides carry out chimeric, therefore, the maintenance of semicircular arc can be born the 4a of portion, 7b, 8b and be set at the semicircular arc that has with the corresponding radius of curvature of profile of cylindrical battery 2.Promptly, in as existing battery module, making cylindrical battery 2 slotting structures of leading in the through hole, the diameter that must set through hole is bigger a little than the diameter of cylindrical battery 2, be provided for inserting easily logical space, but present embodiment is different with it, can set that to bear the external diameter of fit through hole that forms of the 4a of portion, 7b, 8b and cylindrical battery 2 by the maintenance of each semicircular arc of 2 roughly the same.Therefore, in this battery module 1, even large-scale cylindrical battery 2, maintenance frame 3 that also can enough cuboids loosening and also fixedly secure and the battery shaft that always stably keeps this each cylindrical battery 2 to both ends, become structure with high fastness.

In addition, the fixing effect of compressing in fixing hole 4d at the cylindrical battery of interior members of frame 4 with rubber bolt 40 is, utilizes the outer surface crimping of its recuperability and relative up and down each cylindrical battery 2 of 2, absorbs the external force that has been subjected to vibration and has impacted when.Therefore, further do not rock and stably keep each cylindrical battery 2.

In addition, above-mentioned battery module 1 think when safeguard waiting that the cylindrical battery 2 of a part has consumed or the situation of deterioration under, as long as pull out each fixed screw 39, just can will keep frame 3 to be decomposed into interior members of frame 4 and first, second housing parts 7,8 simply, simultaneously by pulling down the bolt on the connecting plate 9 10 between battery, just can unload each cylindrical battery 2, therefore, can only exchange necessary cylindrical battery 2.Therefore, also want all situations of communicating battery module to compare, have the outstanding advantage that can reduce operating cost significantly even this battery module 1 has had a part of in this wise battery consumption or deterioration now with picture.

Then, the detailed part about above-mentioned battery module 1 describes.Fig. 7 to Fig. 9 only shows the maintenance frame 3 of assembled state, Fig. 7 is a stereogram of seeing the maintenance frame 3 of the front side the above-mentioned battery module 1 from front side, show the outer surface side in the battery module 1 that keeps frame 3, Fig. 8 is a stereogram of seeing the maintenance frame 3 of the rear side the above-mentioned battery module 1 from front side, show the inner surface side in the battery module 1 that keeps frame 3, Fig. 9 is the stereogram that cuts off a part.

As shown in Figure 8, the inner surface side of interior members of frame 4 and first, second housing parts 7,8 is born the square peripherally lowland that becomes of the 4a of portion, 7b, 8b in each maintenance, but these lowlands only form and are used for as profiled part Meat pulls out I, on the function with plane to have formed the situation of bearing the place the 4a of portion, 7b, the 8b except each maintenance identical.

On the other hand, as Fig. 7 and shown in Figure 9, interior members of frame 4 and first, the second housing parts 7,8 outer surface side forms except these each frame portions 4,7, the 4a of portion is born in 8 maintenance, 7b, part beyond the central portion of the semicircular arc among the 8b from outer surface recessed inwards the lowland N of step d1 of regulation, simultaneously, the 4a of portion is born in the maintenance that each that adjoins each other in the left and right directions of figure is 2,7b, among the 8b, on the position of the recessed inwards step d2 littler from outer surface, utilize and bear the 4a of portion to each maintenance than above-mentioned step d1,7b, the a pair of guided bearing portion 41 up and down of the linearity that the orientation of 8b extends in parallel connects.In addition, 2 relative up and down maintenances of the left end of Fig. 7 in the interior members of frame 4 (being right-hand member in Fig. 9) are born between the 4a of portion, 4a, recessed inwards on the position of above-mentioned step d2, utilize guided bearing portion 42 to connect at the upwardly extending linearity of upper and lower from outer surface.

In the left and right directions with the left end of Fig. 7 the opposite of the maintenance wall portion 43 of relative guided bearing portion 42 and interior members of frame 4 be set at apart from part R and Fig. 2 between the battery that illustrated the width between one opposite side 12a, the 12b of the connecting portion 12 in the connecting plate 9 roughly the same.

Thereby, when utilizing above-mentioned maintenance frame 3 to fix 10 cylindrical batteries 2, on each cylindrical battery 2 of 2 with adjacency between fixing battery the connecting portion 12 of connecting plate 9 be embedded between the relative up and down a pair of guided bearing portion 41, simultaneously, on 2 cylindrical batteries 2 with the adjacency up and down of the left end of Fig. 7 between fixing battery the connecting portion 12 of connecting plate 9 be embedded between the upwardly extending guided bearing of upper and lower portion 42 and maintenance wall portion 43.

Set the step d2 apart from outer surface of guided bearing portion 41,42 bigger a little than the summation that is in the height of the threaded portion of each thickness in the connecting plate 9 and bolt 10 between 2 batteries.In addition, poor (d1-d2) with step d1 and step d2 sets greatlyyer a little than the height from the threaded portion that the nut 23 that screws togather bolt 10 exceeds.Like this, promptly shown in Figure 11 as the plane graph of the battery module 1 of Fig. 1, connecting plate 9, bolt 10 and nut 23 just are included in and keep in the frame 3 between each battery, all outstanding outside.Therefore, in this battery module 1, do not need special setting to be used to prevent the seal of the electric short circuit of 2 of each cylindrical batteries.

In addition, promptly shown in Figure 10 as the front view of above-mentioned battery module 1, taking in of being communicated with inserting hole 7e, 8e taking in lowland 7f, the 8f interfix in the threaded portion of fixed screw 39 of members of frame 4 and first, second housing parts 7,8.Therefore, when this battery module 1 that uses the regulation number constitutes power brick, connecting plate 9, bolt 10 and nut 23 are included in and keep in the frame 3 between each battery, there are not any parts of giving prominence to from a pair of maintenance frame 3 of cuboid, therefore, just can easily constitute by interfixing according to the combination of having arranged many battery modules 1 in length and breadth.

In addition, as battery module 1, since limit connecting plate 9 between each battery be embedded between the relative up and down a pair of guided bearing portion 41 and guided bearing portion 42 and maintenance wall portion 43 between the position, therefore, become the higher structure of fastness, be suitable for using the situation of large-scale cylindrical battery 2 as monocell.And in when assembling, the connecting portion 12 of connecting plate 9 between the battery that each of the adjacency that can overlap is 2 further keeps reliably in that itself and each are linked under the positioning states consistent with hole 22, and bolt 10 and nut 23 are screwed togather operability raising when fastening.

As shown in figure 10, forwardly in the maintenance frame 3 of side, do not use on the left and right directions every one guided bearing portion 41 and guided bearing portion 42 and keep wall portion 43 as battery between the supporting of connecting plate 9 use.On the other hand, according to the maintenance frame 3 that makes front side in the maintenance frame 3 of the rear side that the configuration of the axle rotation of cylindrical battery 2 is provided with, used in the front side in left and right directions obsolete guided bearing portion 41,42 and kept wall portion 43 to use as the supporting of connecting plate between battery 9.Promptly, at the lateral surface that keeps frame 3, each maintenance of 2 of adjacency is born and has all been formed guided bearing portion 41 between the 4a of portion, 7b, 8b in left and right directions, and the maintenance of adjacency is born and has been formed guided bearing portion 42 between the 4a of portion, 4a and kept wall portion 43 in the above-below direction of left end, therefore, can before and after the maintenance frame 3 of both sides shared same shape.At this, fasten in the pass that connects 10 cylindrical batteries 2 according to the connection status shown in Fig. 5, produce untapped as described above maintenance and bear the 4a of portion or guided bearing portion 42 and keep wall portion 43, but on as the function that keeps frame 3 without any problem.

Have again, in the above-described embodiment, as two housing parts 7 shown in Fig. 6, each inner face 7d of 8, the structure of the mutual butt of inner face 4c of 8d and interior members of frame 4, illustrated and utilized each corresponding 2 semicircular arc to keep bearing the 7b of portion, 4a, 8b, the situation of the through hole of the corresponding circle of profile of 4a formation and cylindrical battery 2, but members of frame 4 and two housing parts 7 in described, 8, also can constitute only each outer face 4b, 7c, 8c is butt each other, set each inner face 4c, 7d, 8d is shorter than diagram, produces the structure in gap between them.Under this situation, when screwing togather fastening fixed screw 39, make each frame portion 4,7,8 strain a little, just can make that each keeps bearing the 4a of portion, 7b, 8b closely contacts with the outer peripheral face of cylindrical battery 2, can further keep cylindrical battery securely.

Below, with reference to Figure 12～Figure 26, other shape examples of bearing portion about other structure example and the maintenance of maintenance frame of the present invention describe.

Figure 12 is the plane graph that the structure of the maintenance frame 50 in other examples of the present invention is shown.Keep frame 50 to be made of housing parts 51 and housing parts 52, each housing parts 51,52 have respectively with the maintenance of the outer peripheral face butt of cylindrical battery 2 and bear portion 71,72.These maintenances are born portion 71,72 and are formed the semicircular arc that has respectively with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of cylindrical battery 2, when having constituted maintenance frame 50, keeping bearing the outer peripheral face that almost seamlessly embeds cylindrical battery 2 in the portion 71,72 in conjunction with housing parts 51,52.In addition, be provided with in the members of frame 51 outside and bound fractions housing parts 52 and cooperate protuberance 67, make housing parts 51 and the 52 non-migration ground combinations of housing parts, be provided with and the cooperating recesses 68 that cooperates protuberance 67 corresponding shapes in the members of frame 52 outside and bound fractions housing parts 51.

Figure 13 A～Figure 13 B is the plane graph that has made up the structure of the maintenance frame 50 that interior members of frame 53 constitutes except above-mentioned housing parts 51,52.Form the semicircular arc that has with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of cylindrical battery 2 on the two sides of interior members of frame 53 and kept bearing portion 73, in a face side of interior members of frame 53 cooperation protuberance 67 in conjunction with usefulness is being set, be provided with and the cooperating recesses 68 that cooperates protuberance 67 corresponding shapes in another face side, therefore, can suitably select is to constitute as shown in FIG. 13A in conjunction with an interior members of frame 53 and housing parts 51,52 can keep the maintenance frame 50 of maximum 4 cylindrical batteries 2, still constitute shown in Figure 13 B in conjunction with 2 interior members of frame 53 and housing parts 51,52 can keep the maintenance frame 50 of maximum 6 cylindrical batteries 2.Have again, be not limited to illustrated embodiment, also can freely constitute the maintenance frame 50 of the cylindrical battery 2 that can keep the quantity expected after the quantity of members of frame 53 in the suitable increase.

Below, use 51,52 and 1 interior members of frame 53 of 2 housing parts to constitute an example of the associated methods when keeping frame 50 shown in Figure 14.At first, be embedded into by cooperation protuberance 67 in the cooperating recesses 68 of interior members of frame 53, combine housing parts 51 and interior members of frame 53 with not having skew housing parts 51.Then, be embedded into by cooperation protuberance 67 in the cooperating recesses 68 of another housing parts 52, do not combine interior members of frame 53 and another housing parts 52 of having combined with housing parts 51 with just having skew interior members of frame 53.Then, make the union body 65 of length of the length (left and right directions of figure) of the frame portion after roughly being equivalent to link, with upwardly extending the butt in side that links each other in each 51,52,53 center portion of frame portion, with fixed screw 39, by the regulation connect apertures 65a in the localities that is arranged on union body 65, with the regulation that is arranged on housing parts 51,52 and interior members of frame 53 screwed hole 64 in the localities screw togather fastening, the fixing frame 50 that keeps.Have again,, be not only the method that union body 65 is set on the face of any side that keeps frame 50, also can be arranged on the two sides that keeps frame 50, screw togather fastening method with fixed screw 39 in the two sides side as the fixing means that keeps frame 50.In addition,, also union body 65 can be set to cross section L font, perhaps on union body 65, ribs be set in order to improve intensity for bending.

Constitute the other example of the associated methods when keeping frame 50 shown in Figure 15.Maintenance frame 50 shown in Figure 15 is made of housing parts 51g, 52g and interior members of frame 53g.Bear between the 71g of portion, 72g, the 73g in each maintenance of 2 along the direction adjacency of each side of these housing parts 51g, 52g and interior members of frame 53g, be not provided with and cooperate protuberance and cooperating recesses, replace and be separately positioned on the inserting hole 61,62,63 that extends on the frame portion link direction each other, made up a housing parts 51g and another housing parts 52g and in during members of frame 53g, each inserting hole 61,62,63 becomes a continuous inserting hole.Then, the direction shown in the arrow from figure is inserted logical ball screw 80 to the inserting hole that connects, by screw togather the tip of fastening ball screw 80 with inner nut, securely in conjunction with keeping frame 50.In addition, also can be that the tip of the inserting hole 61 in Figure 15 is provided with inner nut (not shown), come in conjunction with the structure that keeps frame 50 by the tip that screws togather fastening ball screw 80 with nut.Have again, the length of ball screw 80 is prepared in advance multiple, by suitable use and the corresponding ball screw 80 of length (left and right directions of figure), can freely set the maintenance frame 50 of the cylindrical battery 2 of the quantity that keeps expectation according to the maintenance frame 50 of the quantity respective change of interior members of frame 53g.

The various variation that keep the portion of bearing are shown below.Housing parts 51a shown in Figure 16 is provided with the structure that the 71a of portion is born in polygonal maintenance.Like this, if be provided with and the structure of bearing the 71a of portion corresponding to the roughly consistent polygonal maintenance of the radius of curvature of the roughly half cycle of the outer peripheral face of cylindrical battery 2, then owing to having produced some gaps between the outer peripheral face that bears 71a of portion and cylindrical battery 2 in maintenance, therefore, can either keep cylindrical battery 2 securely, and can utilize this gap to distribute heat when discharging and recharging.In addition, be polygon owing to keep bearing the 71a of portion, therefore, can be more neatly keep corresponding to the form variations of battery outer peripheral face.

Housing parts 51b shown in Figure 17 be provided with keep the structure bear the 71b of portion, this maintenance bear the 71b of portion by with corresponding to the curvature of the outer peripheral face of cylindrical battery 2 constituting of the consistent arc sections 83 of radius and right angle portion 84 roughly.By being set, such maintenance bears the 71b of portion, can not only keep cylindrical battery 2, also can keep rectangular cell, in addition, when keeping cylindrical battery 2, the function in the gap that is used to dispel the heat plays in the right angle portion 84 that keeps bearing the 71b of portion, and when keeping rectangular cell, the arc sections 83 that keeps bearing the 71b of portion plays the function in the gap that is used to dispel the heat.

Housing parts 51c shown in Figure 18 be provided with keep the structure bear the 71c of portion, described maintenance bear the 71c of portion with face corresponding to the roughly consistent semicircular arc of the radius of curvature of the roughly half cycle of the outer peripheral face of cylindrical battery 2 on, have otch 81.Bear the 71c of portion according to such maintenance, when having kept cylindrical battery 2, otch 81 plays the function in the gap that is used to dispel the heat.

Housing parts 51d shown in Figure 19 has the structure that the 71d of portion is born in step-like maintenance, the line that links the summit of this each step becomes semicircular arc, and the radius of curvature of this semicircular arc is roughly consistent with radius of curvature corresponding to the roughly half cycle of the outer peripheral face of cylindrical battery 2.Bear the 71d of portion according to so step-like maintenance, the function in the gap that is used to dispel the heat is just played in the gap that has formed between the outer peripheral face of cylindrical battery 2 and each step when having kept cylindrical battery 2.

Housing parts 51e shown in Figure 20 A～20B is provided with the structure that the 71e of portion is born in maintenance, described maintenance bear the 71e of portion with face corresponding to the roughly consistent semicircular arc of the radius of curvature of the roughly half cycle of the outer peripheral face of cylindrical battery 2 on, have many hollow hole parts 69.It is the double-decker that the semicircular arc face by the semicircular arc face of inboard and the outside constitutes that the 71e of portion is born in this maintenance, inboard semicircular arc face becomes and the roughly consistent shape of radius of curvature corresponding to the roughly half cycle of the outer peripheral face of cylindrical battery 2, is provided with many ventilation roads 82 between the semicircular arc face in the semicircular arc face (71e of portion is born in maintenance) of inboard and the outside.With the semicircular arc face of the inboard of the outer peripheral face butt of cylindrical battery 2 on be provided with many hollow hole parts 69, therefore, the heat that when these hollow hole parts 69 distribute battery charging and discharging by ventilation road 82, produces.Have again, can suitably set quantity and its spread geometry of hollow hole part 69 according to the heat dissipation capacity of battery.

Housing parts 51f shown in Figure 21 is provided with the structure that the 71f of portion is born in the maintenance of broach shape, and the line that links the summit of each broach shape becomes and the roughly consistent semicircular arc of radius of curvature corresponding to the roughly half cycle of the outer peripheral face of cylindrical battery 2.The 71f of portion is born in maintenance according to such broach shape, has both kept cylindrical battery 2 securely, and the gap between each broach can be played the function in the gap that is used to dispel the heat again.Have again, above-mentioned illustrated embodiment only is illustrated about the structure of some housing parts, but can with respectively with these each housing parts 51a～51f corresponding other the housing parts and the maintenance of interior members of frame bear portion, be set to bear the identical shape of the 71a～71f of portion with the maintenance of housing parts 51a～51f.

In addition, as shown in figure 22, also the maintenance of members of frame 51h is outside born the 71h of portion many projection 71i is set.Among the housing parts 51h shown in Figure 22, each top line each other that has linked many projection 71i becomes and the roughly consistent semicircular arc of radius of curvature corresponding to the outer peripheral face of cylindrical battery 2, therefore, when having kept cylindrical battery 2 with this maintenance frame 51h, the gap that produces between the 71h of portion corresponding to the height of these projections 71i is born in outer peripheral face and maintenance at cylindrical battery 2, therefore, the function in the gap that is used to distribute the heat that produces when discharging and recharging is just played in this gap.Have, the shape of projection 71h is not limited to illustrated circle again, can be multiple shape.

The other structure that keeps frame 50 shown in Figure 23.The maintenance frame 50 of Figure 23 is made of housing parts 54 and another housing parts 55, described housing parts 54 are provided with and keep bearing portion 74, this maintenance bear portion 74 have with corresponding to the roughly consistent shape of radius of curvature more than the half cycle of the outer peripheral face of cylindrical battery 2, described housing parts 55 are provided with and keep bearing portion 75, this maintenance bear portion 75 have with corresponding to the roughly consistent shape of radius of curvature below the half cycle of the outer peripheral face of cylindrical battery 2.When combining housing parts 54 and another housing parts 55, the maintenance of mutual opposed combination is born portion 74,75 and is formed the circular shape with radius of curvature corresponding with the full week of the outer peripheral face of cylindrical battery 2.By embedding the cooperation protuberance 67 that is provided with in the housing parts 54 in the cooperating recesses 68 that is provided with in the members of frame 55 outside, carry out the combination of housing parts 54,55.According to such structure, owing to before constituting maintenance frame 50, stably keep being embedded into the cylindrical battery 2 that keeps bearing in the portion 74, therefore, do not need to be provided with in addition fixture, this fixture is used for making it not be offset from assigned position what keep frame 50 in conjunction with operation stationary cylinder shape battery 2, therefore, realize the simplification and the low cost of operation.Have again, the structure of the maintenance frame 50 that has only used housing parts 54,55 has been shown among Figure 23, but be not limited thereto, as long as use side's side have with bear corresponding to the maintenance of the roughly consistent shape of the radius of curvature below the half cycle of the outer peripheral face of cylindrical battery 2 portion, the opposing party's side have and corresponding to the radius of curvature more than the half cycle of the outer peripheral face of cylindrical battery 2 roughly the maintenance of the shape of unanimity bear the interior members of frame of portion, just can freely set the maintenance frame 50 of the cylindrical battery 2 that can keep desired amt according to purposes.In addition, as the fixing means of these housing parts 54,55 and interior members of frame, can be the method for utilizing union body 65 shown in Figure 14, and the method for utilizing ball screw 80 shown in Figure 15.

The other example that keeps frame 50 shown in Figure 24～Figure 26.Housing parts 56 shown in Figure 24 are to be provided with the structure that keeps bearing portion 76, and described maintenance is born portion 76 and comprised: circular-arc part, and its radius of curvature is roughly consistent with radius of curvature corresponding to the roughly half cycle of the outer peripheral face of cylindrical battery 2; And line part, extend out to the roughly overall dimension of cylindrical battery 2 from the both ends of this circular-arc part.Another housing parts 57 that combine formation maintenance frame 50 with these housing parts 56 are the tabulars shown in Figure 25 A.If use the housing parts 56,57 of such shape, can keep cylindrical battery 2 by enough housing parts 56, therefore, except the structure of simplifying another housing parts 57 realizes also obtaining the effect that operability improves the reduction of cost.In addition, shown in Figure 25 B, be provided with the interior members of frame 58 that the structure of portion 78 is born in maintenance if use, described maintenance bear portion 78 by with constitute corresponding to roughly consistent circular-arc part of the radius of curvature of the roughly half cycle of the outer peripheral face of cylindrical battery 2 and the line part that extend out to the roughly overall dimension of cylindrical battery 2 from the both ends of this circular-arc part, just can freely set the maintenance frame 50 that can keep the cylindrical battery 2 of desired amts according to purposes with 56,57 combinations of housing parts.In addition, as shown in figure 26, if the structure that is provided with the fixed part 60 that is used to keep cylindrical battery 2 in the straight line portion of portion 76 (78) is born in the maintenance of members of frame 56 (interior members of frame 58) outside, can utilize this fixed part 60 stable cylindrical batteries that keep, the frame 50 that is maintained in conjunction with operation the time the effect that improves of operability.Have again, associated methods as the maintenance frame 50 shown in Figure 24～Figure 26, except the method for utilizing ball screw 80 shown in the method for utilizing union body 65 shown in Figure 14 and Fig. 15, also can be utilize that binding agent, hot melt apply, the several different methods of thermal weld, ultrasonic bonding, sealing spring etc.

Have again, be arranged on Figure 12～Figure 26 housing parts 51,51a～51h, 52,54～57 and interior members of frame 53,58 in screwed hole 64 be to be used for using union body 65 to screw togather the screwed hole of fastening fixed screw 39 when keeping frames 50, the terminal screwed hole 66 that is arranged among housing parts 51, the 51a～51h, 52,54～57 is the screwed holes that are used to screw togather fastening terminal screw 34.In addition, be arranged on housing parts 51,51a～51h, 52,54～57 and the inner nut installing hole 70 everywhere of interior members of frame 53,58, be used to screw togather fastening in conjunction with connecting plate between battery 9 bolt 10 each other.In addition, portion 74,75,76,78 is born in maintenance about housing parts 56 shown in the housing parts shown in Figure 23 54,55 and Figure 24～Figure 26 and interior members of frame 58, can be set to bear the identical shape of the 71a～71h of portion with the maintenance as the different shape of Figure 16～shown in Figure 22.

Have again, as the material of maintenance frame of explanation in the present embodiment, can use from sex change p-poly-phenyl ether resin, sex change poly-p-phenylene oxide resin, ABS resin, polyethersulfone resin, polyetherimide resin, polyimide resin, metal material or with polyethylene terephthalate filled glass fibre compound as main material and the thermoplastic polyester composite material of mica material select at least a.In addition, also can use resilient material that rubber etc. is made of macromolecular material as material, but expectation at this moment have the Young's modulus about 1.5～7.0MPa.

In addition, the structure of having used cylindrical battery 2 mainly has been described in the above description, but has been not limited thereto, also can use various angles tubular battery, with maintenance frame formation battery module 1 with the portion of bearing with the maintenance of the corresponding shape of its overall dimension.In addition, show the example of the battery 2 in the battery module 1 of having connected in the above description, but also can be according to the purposes parallel connection.

Industrial utilizability

Ground as described above, battery module of the present invention is because except the holding frame of using in each monocell Outer surface beyond the both ends that keep all exposes externally, therefore, can access especially high loosing Thermal effect in addition, is divided into interior members of frame and 2 housing parts by constituting with holding frame three, Even large-scale monocell also can be encased in it regulation of holding frame in the localities easily, and And, because holding frame has the structure that has freely linked interior members of frame and 2 housing parts with loading and unloading, Therefore, only replace to consume after can decomposing easily and deterioration monocell. In addition, in the present invention The manufacture method of battery module in, can high production rate and easily make and have above-mentioned remarkable effect The battery module of fruit.

Claims (31)

1. a battery module is characterized in that having: a plurality of monocells (2); With maintenance frame (3,50), constitute by a plurality of frame portion (4,7,8,51～58,51a～51h, 52g, 53g) that has in that portion (4a, 7b, 8b, 71～78,71a～71h, 72g, 73g) is born in the chimeric maintenance of a part of the outer peripheral face of above-mentioned monocell

Utilize battery shaft that the maintenance portion of bearing of each frame portion of above-mentioned maintenance frame keeps above-mentioned monocell to both ends, each 2 monocell of adjacency are electrically connected mutually.

2. battery module as claimed in claim 1 is characterized in that, above-mentioned monocell (2) is a cylindrical battery, has: battery strings, a plurality of cylindrical batteries will battery shaft separately be parallel to each other configuration and side by side configuration form; With keep frame (3), the battery shaft of above-mentioned cylindrical battery to both ends mutually freely with loading and unloading binding above-mentioned a plurality of frame portions (7,8) and one turn to cuboid and form,

In the above-mentioned mutual relative frame portion that respectively keeps in the frame, set with the battery number of above-mentioned battery strings with quantity, bear portion (7b, 8b) with the maintenance of the outer surface butt of above-mentioned cylindrical battery,

Bear portion in the above-mentioned maintenance that respectively keeps mutual relative each the frame portion in the frame to be provided with, the battery shaft that grips above-mentioned cylindrical battery to both ends,

The cylindrical battery that adjoins each other in the above-mentioned battery strings is electrically connected mutually by connecting plate (9) between battery each other.

3. battery module as claimed in claim 2 is characterized in that,

Have first battery strings and second battery strings as battery strings, this first battery strings and second battery strings by the cylindrical battery (2) of same number each battery shaft is disposed in parallel to each other and respectively side by side configuration form;

The battery shaft that is arranged on first and second battery strings to both ends respectively keep frame (3), freely load and unload link interior members of frame (4), housing parts (7) that dispose along an one limit mutually respectively and another housing parts (8) of disposing along another limit and one turn to cuboid and form;

In above-mentioned the dual-side of members of frame, housing parts with above-mentioned in the limit of the relative side of members of frame and another housing parts with above-mentioned on the limit of the relative side of members of frame, set respectively with the battery number equal number of above-mentioned battery strings, bear portion (4a, 7b, 8b) with the outer surface butt of above-mentioned cylindrical battery and the maintenance that keeps;

Be arranged in above-mentioned first battery strings each cylindrical battery battery shaft to both ends, gripped to be embedded into the state that above-mentioned each maintenance that respectively keeps mutual relative housing parts in the frame and interior members of frame bears in the portion,

Be arranged in above-mentioned second battery strings each cylindrical battery battery shaft to both ends, gripped to be embedded into the state that above-mentioned each maintenance that respectively keeps another mutual relative housing parts in the frame and interior members of frame bears in the portion,

Be electrically connected the cylindrical battery that adjoins each other in above-mentioned first and second battery strings mutually by connecting plate between battery, and, be electrically connected 2 cylindrical batteries that are positioned at each end in above-mentioned two battery strings mutually by connecting plate between battery (9).

4. battery module as claimed in claim 3, it is characterized in that, each that forms in each frame portion (4,7,8) of above-mentioned maintenance frame (3) kept bearing portion (4a, 7b, 8b) be set at the semicircular arc that has with the corresponding radius of curvature of profile of battery (2).

5. battery module as claimed in claim 1 is characterized in that,

Bear each position between the portion (4a, 7b, 8b) in each 2 maintenance of adjacency on the direction of the side of each frame portion (4,7,8) of above-mentioned maintenance frame (3), form respectively with the screwed hole (4e, 7e, 8e) of the upwardly extending shape in side of above-mentioned side quadrature

By insert in the above-mentioned screwed hole that when mutually relatively making up each frame portion, connects fixed screw (39) screw togather fastening, the free above-mentioned frame of binding portion mutually with loading and unloading,

At the weld part (11) of connecting plate (9) between self-contained battery on each positive terminal or the negative terminal, and screw togather each connecting portion (12) that stretches out to mutual close direction from above-mentioned weld part mutually, be electrically connected each 2 cylindrical battery (2) of adjacency with freely loading and unloading thus.

6. battery module as claimed in claim 3, it is characterized in that, in interior members of frame (4), bear portion (4a) in opposed 2 maintenances between the dual-side and be formed with the cylindrical battery fixing hole (4d) that connects between each central portion, and inserted in fixing hole fixingly with latch (40) at above-mentioned each cylindrical battery, this is fixing to have than this cylindrical battery with the length dimension of fixing hole long shape and elasticity with latch (40).

7. battery module as claimed in claim 5, it is characterized in that, keep frame (3 at each, 50) a plurality of frame portion (4 in, 7,8,51～58,51a～51h, 52g, each outer surface side 53g), (the 4a of portion is born in each maintenance, 7b, 8b, 71～78,71a～71h, 72g, the part except middle body 73g) forms from the outer surface lowland of the step of recessed regulation (N) to the inside, and, portion is born in each 2 maintenance that adjoins each other, with than the little step of above-mentioned step from the recessed to the inside position of outer surface, by connecting in above-mentioned each guided bearing portion (41) that keeps bearing the linearity that extends in parallel in the orientation of portion; Be formed on above-mentioned in 2 maintenances on the end in the members of frame bear between the portion from the recessed to the inside position of outer surface, the guided bearing portion (42) of extending by linearity interconnects,

Between opposed 2 above-mentioned guided bearing portions, embed the connecting portion (12) that connecting plate between battery (9) are arranged.

8. battery module as claimed in claim 7, it is characterized in that, the battery shaft that keeps each cylindrical battery (2) to a distolateral maintenance frame (3,50) and to keep another distolateral maintenance frame (3,50) be identical shaped, keeps above-mentioned another distolateral maintenance frame to be configured to wind the structure of rotating along the battery shaft of the orientation of battery strings.

9. battery module as claimed in claim 1, it is characterized in that 2 frame portions (51,52,54～57,51a～51h, 52g) of being born portion (71,72,74～77,71a～71h, 72g) by the maintenance on the part that has the outer peripheral face that is entrenched in monocell (2) respectively constitute above-mentioned maintenance frame (50).

10. battery module as claimed in claim 1 is characterized in that,

Above-mentioned maintenance frame (50) has: 2 housing parts (51,52,54～57,51a～51h, 52g), and portion (71,72,74～77,71a～71h, 72g) is born in the maintenance on a part that has the outer peripheral face that is entrenched in monocell (2) on the single face respectively; And interior members of frame (53,53g, 58), have identical shaped maintenance on the two sides and bear portion (73,73g, 78),

Each face of members of frame is in conjunction with above-mentioned housing parts in above-mentioned, mutually relative above-mentioned in the maintenance of the members of frame maintenance of bearing portion and above-mentioned housing parts bear between the portion the above-mentioned monocell of clamping.

11. battery module as claimed in claim 10 is characterized in that, between above-mentioned 2 housing parts (51,52,54～57,51a～51h, 52g), has interior members of frame more than 2 (53,53g, 58).

12. battery module as claimed in claim 1, it is characterized in that, portion (71～73,71c, 71e, 71g, 71h, 72g, 73g) is born in above-mentioned maintenance form the semicircular arc that has with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of monocell (2).

13. battery module as claimed in claim 1, it is characterized in that, one side (54) of the mutual relative frame portion in the above-mentioned maintenance frame (50) has maintenance and bears portion (74), this maintenance is born portion (74) and is formed the shape that has with the above corresponding radius of curvature of half cycle of the outer peripheral face of monocell (2), another frame portion (55) has the maintenance that forms the shape of corresponding radius of curvature below the half cycle that has with the outer peripheral face of monocell and bears portion (75), make these frame portion and another frame portion relative mutually and in conjunction with the time, the shape of both sides' the maintenance portion of bearing formation becomes the circular shape with radius of curvature corresponding with the full week of the outer peripheral face of monocell.

14. battery module as claimed in claim 1 is characterized in that, the shape that portion (71a) is born in above-mentioned maintenance be made as with the roughly consistent polygon of the corresponding radius of curvature of outer peripheral face of monocell (2).

15. battery module as claimed in claim 1 is characterized in that, the shape that portion (71b) is born in above-mentioned maintenance is made as to have made up to be had and the circular arc portion (83) of the corresponding radius of curvature of outer peripheral face of monocell (2) and the shape of right angle part (84).

16. battery module as claimed in claim 1, it is characterized in that, the shape that portion (71c) is born in above-mentioned maintenance forms the semicircular arc that has with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of monocell (2), forms a plurality of otch (81) on the face of this semicircular arc.

17. battery module as claimed in claim 1, it is characterized in that, the line that the shape that portion (71d) is born in above-mentioned maintenance forms each summit that links step becomes the step shape of semicircular arc, and the radius of curvature of this semicircular arc is with roughly consistent with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of monocell (2).

18. battery module as claimed in claim 1, it is characterized in that, the line that the shape that portion (71f) is born in above-mentioned maintenance forms each summit that links broach becomes the broach shape of semicircular arc, and the radius of curvature of this semicircular arc is with roughly consistent with the corresponding radius of curvature of roughly half cycle of the outer peripheral face of monocell (2).

19. battery module as claimed in claim 1 is characterized in that, constitutes above-mentioned maintenance with material springy and bears portion (4a, 7b, 8b, 71～78,71a～71h, 72g, 73g).

20. battery module as claimed in claim 1 is characterized in that, the end that makes above-mentioned maintenance bear portion (76,78) extend out to the roughly overall dimension of monocell (2).

21. battery module as claimed in claim 20 is characterized in that, the end of bearing portion (76,78) with above-mentioned maintenance combines the flat board (57) that is used to keep monocell (2).

22. battery module as claimed in claim 1, it is characterized in that, make to have maintenance that the end that keeps bearing portion (76) extend out to the roughly overall dimension of monocell and bear the housing parts (56) of portion and be combined into towards identical with interior members of frame (58) with spline structure, with above-mentioned in the end of members of frame combine the flat board (57) that is used to keep monocell (2).

23. battery module as claimed in claim 20, it is characterized in that, on in the end of portion (56,58) and roughly consistent corresponding to the radius of curvature of the outer peripheral face of monocell (2) line are born in above-mentioned maintenance, has the fixed part (60) that is used for fixing monocell.

24. battery module as claimed in claim 1, it is characterized in that, in the face that on the frame portion link direction each other of above-mentioned frame portion (51～58,51a～51f, 51h), extends, with the direction of the link direction quadrature of frame portion on form screwed hole (64), after having linked a plurality of frame portion, union body (65) with the binding same length length of above-mentioned butt and frame portion, fixed screw (39) screws togather fastening by above-mentioned union body and above-mentioned screwed hole, secure bond keeps frame (50) thus.

25. battery module as claimed in claim 1, it is characterized in that, each 2 maintenance in adjacency on the direction of the side of each frame portion (51g, 52g, 53g) of above-mentioned maintenance frame (50) are born between the portion, be formed with respectively with the link direction equidirectional of frame portion on the inserting hole (61,62,63) that extends, screw togather fasteningly by inserting ball screw (80) in the above-mentioned inserting hole that when having linked a plurality of frame portion, has connected, fix in conjunction with keeping frame.

26. battery module as claimed in claim 25 is characterized in that, utilizes nut to screw togather fastening ball screw (80).

27. battery module as claimed in claim 1 is characterized in that, utilizes base plate, shell or framework to fix above-mentioned maintenance frame (3,50).

28. the manufacture method of a battery module, described battery module (1) is to utilize distolateral and another a pair of maintenance frame (3) in distolateral be provided in cylindrical battery, the axial both ends of a plurality of above-mentioned cylindrical batteries of clamping (2) constitute respectively, it is characterized in that having:

The semicircular arc that only on top is formed with the regulation number every 2 of predetermined distance configurations keeps bearing housing parts (7) of portion (7b), bear an end of embedding cylindrical battery in the portion and separately half of another end in the maintenance of these 2 side's housing parts, the operation of the cylindrical battery of the number of configuration regulation side by side;

Make on top with bottom in be formed with the regulation number semicircular arc keep bearing 2 interior members of frame (4) of portion (4a), being embedded in the maintenance of avris down in separately half of the end that makes above-mentioned cylindrical battery respectively and another end bears under the state in the portion, with the operation of above-mentioned 2 one side's housing parts butts;

Be electrically connected the operation of each 2 cylindrical battery of adjacency with connecting plate between battery (9);

Above-mentioned cylindrical battery one distolateral and another distolateral in, utilize the operation of fixed screw (39) respectively in conjunction with above-mentioned 2 one side's housing parts and above-mentioned 2 interior members of frame;

An end of embedding cylindrical battery in the portion and separately half of another end are born in the maintenance of avris on above-mentioned 2 interior members of frame, the operation of the cylindrical battery of the number of configuration regulation side by side;

Only make the semicircular arc that is formed with the regulation number in bottom keep bearing 2 the opposing party's housing parts (8) of portion (8b), make respectively above-mentioned in separately half of a end of cylindrical battery on the members of frame and another end be embedded into these maintenances and bear under the state in the portion, with the operation of above-mentioned 2 interior members of frame butt;

With each cylindrical battery of 2 of adjacency between members of frame in above-mentioned and another housing parts, with the operation of connecting plate (9) electrical connection between battery;

One distolateral and another is distolateral at above-mentioned cylindrical battery utilizes the operation of fixed screw (39) in conjunction with above-mentioned 2 the opposing party's housing parts and above-mentioned 2 interior members of frame respectively.

29. the manufacture method of battery module as claimed in claim 28, it is characterized in that, before assembling procedure, above-mentioned 2 side's housing parts (7) are configured in assembling base station (37) every predetermined distance, and temporary fixed by screwing togather, after finishing, the assembling of battery module (1) unloads above-mentioned assembling base station.

30. the manufacture method of battery module as claimed in claim 28 is characterized in that,

Members of frame (4) afterwards in housing parts (7) are gone up with the state butt that covers, to connect above-mentioned in each relative 2 maintenance in the members of frame bear in each cylindrical battery usefulness fixing hole (4d) between each middle body of portion (4a), insert respectively and have than the shape and the flexible fixing latch (40) of using of this cylindrical battery with the length dimension length of fixing hole, make the outer surface of this fixing above-mentioned cylindrical battery of most advanced and sophisticated butt (2) with latch and withstand above-mentioned cylindrical battery

By screw togather above-mentioned in members of frame and the integrated formation of 2 housing parts keep frames (3), push said fixing respectively with each outer surface in the cylindrical battery of these both end sides and it compressed in fixing hole at above-mentioned cylindrical battery with latch.

31. the manufacture method of battery module as claimed in claim 28, it is characterized in that, according to the outstanding round about mutually configuration of the connecting portion (12) of connecting plate (9) between a pair of battery or above-mentioned connecting portion mutually to the outstanding configuration of orthogonal direction, go up each weld part (11) that connecting plate (9) between described a pair of battery is fixed in welding at the positive lateral electrode terminal (29) and the minus side electrode terminal (28) of each cylindrical battery (2) in advance

After maintenance frame (3) has been installed above-mentioned cylindrical battery, to overlap and screw togather from the connecting portion of each cylindrical battery of 2 of adjoining each other connecting plate between outstanding 2 batteries of the direction that is positioned at mutually close position, be electrically connected each 2 cylindrical battery of adjacency mutually.

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