JP3774977B2 - Battery power unit and end plate used for it - Google Patents

Battery power unit and end plate used for it Download PDF

Info

Publication number
JP3774977B2
JP3774977B2 JP06995697A JP6995697A JP3774977B2 JP 3774977 B2 JP3774977 B2 JP 3774977B2 JP 06995697 A JP06995697 A JP 06995697A JP 6995697 A JP6995697 A JP 6995697A JP 3774977 B2 JP3774977 B2 JP 3774977B2
Authority
JP
Japan
Prior art keywords
battery
battery module
power supply
battery power
end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP06995697A
Other languages
Japanese (ja)
Other versions
JPH10270006A (en
Inventor
修平 丸川
貴樹 小林
豊彦 江藤
泰祥 深尾
功 渡辺
克巳 高津
Original Assignee
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to JP06995697A priority Critical patent/JP3774977B2/en
Priority claimed from EP20000107968 external-priority patent/EP1030389B1/en
Priority claimed from EP20030016665 external-priority patent/EP1376733A3/en
Publication of JPH10270006A publication Critical patent/JPH10270006A/en
Application granted granted Critical
Publication of JP3774977B2 publication Critical patent/JP3774977B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/10Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M2/1016Cabinets, cases, fixing devices, adapters, racks or battery packs
    • H01M2/1072Cabinets, cases, fixing devices, adapters, racks or battery packs for starting, lighting or ignition batteries; Vehicle traction batteries; Stationary or load leading batteries
    • H01M2/1083Fixing on vehicles
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/63Control systems
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/64Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643Cylindrical cells
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561Gases
    • H01M10/6563Gases with forced flow, e.g. by blowers
    • H01M10/6565Gases with forced flow, e.g. by blowers with recirculation or U-turn in the flow path, i.e. back and forth
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561Gases
    • H01M10/6566Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20Fuel cells in motive systems, e.g. vehicle, ship, plane
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40Application of hydrogen technology to transportation

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery power supply device used as a motor drive power source for an electric vehicle, and an end plate used for the battery power supply device.
[0002]
[Prior art]
As this seed battery power supply device, a large number of battery modules formed by connecting a plurality of unit cells electrically and mechanically in series in a row are arranged in parallel and held in a holder case, and these battery modules are electrically connected. What was connected so that high voltage power could be taken out in series was known.
[0003]
[Problems to be solved by the invention]
The inventors have arranged a large number of battery modules in parallel in a holder case composed of a case main body and both end plates, hold the end portions of the battery modules in holding holes provided in the end plates, and on the outer surface of the end plates. A battery power supply device has been developed in which the battery modules are electrically connected in series by fastening the ends of the battery modules to a metal path bar.
[0004]
However, according to this prior example, since the end plate and the pass bar are separate, there is a problem that the support strength and rigidity of the battery module are insufficient, and the work of assembling the battery module into the holder case becomes complicated. In addition, there is a problem of erroneous insertion in which the positive electrode and the negative electrode of the battery module are mistakenly assembled into the holder case, and a problem that twisting occurs between the single cells when the battery module is fastened to the pass bar.
[0005]
The present invention solves the above-mentioned problems of the prior examples, and also provides a battery power supply device that can reasonably perform battery module voltage detection and single cell abnormal temperature rise detection with a simple structure. The main objective is to provide an end plate to be used.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a battery case in which a plurality of battery modules, each of which is formed by connecting a plurality of unit cells electrically and mechanically in series, are arranged in parallel and held in a holder case. A battery power supply device in which each end plate located at both ends is provided with a pass bar that electrically connects the terminals of the battery module. The end plate is made of a resin plate, and the pass bar is fixed to the end plate by insert molding. It is characterized by being made.
[0007]
The battery power supply device of the present invention has the above-described configuration, so that the pass bar is integrated into the end plate, so that the support strength and rigidity of the battery module can be significantly improved and fastening of bolts or the like can be achieved. As a result of the battery module being coupled to the pass bar only by the work, the work of assembling the battery module into the holder case becomes easy and easy.
[0008]
In the above invention, the unit cell is configured to be a nickel hydride secondary battery, and all the battery modules arranged in the holder case are alternately connected by the pass bar of one end plate and the pass bar of the other end plate. Preferably, the battery modules are configured to be electrically connected in series as a whole, and further, the battery modules are arranged horizontally and vertically in a matrix and held in a holder case.
[0009]
In the battery power supply device of the present invention, a lead wire for measuring the voltage between terminals of one or a plurality of battery modules is embedded in the end plate by insert molding, and the lead for measuring the voltage between terminals. A fuse is arranged in the middle of the wire, and the fuse is attached to a fuse mounting piece fixed to the end plate by insert molding, and each lead wire is collected in one place and taken out from the end plate In addition, the lead wire is embedded in only one of the two end plates by insert molding, and each lead wire is connected to each pass bar so that the voltage between the terminals of the two battery modules can be measured. Can be configured.
[0010]
By adopting such a configuration, the lead plate for measuring the voltage between the terminals of one or more battery modules is built into the end plate, which is convenient for handling, has no miswiring, and has a simple structure. A voltage detection device for a battery module can be provided, and safety in a short circuit can be achieved by the fuse.
[0011]
In the battery power supply device of the present invention, a temperature sensor whose electrical resistance increases suddenly when the temperature rises is attached to each unit cell from the outside, and these temperature sensors are connected in series to detect an abnormality in temperature rise at least for each battery module. In addition, the holding piece for holding the end of the connection line connecting each temperature sensor in series is fixed to the end plate by insert molding, and each battery module unit is provided with a connection line. The holding pieces for holding the end portions are electrically connected in series, and configured to detect a temperature rise abnormality in units of a plurality of battery modules, and the connecting pieces for electrically connecting the holding pieces in series. It is configured to be fixed to the end plate by insert molding, and a temperature sensor that increases the electrical resistance rapidly when the temperature rises is attached to all the cells arranged in the holder case from the outside. Connect the temperature sensor Rasubete in series, it can be configured to sense the temperature increase abnormality.
[0012]
By adopting such a configuration, the abnormal temperature rise of the unit cell can be detected at least in the unit of the battery module, and in some cases, the abnormal temperature rise of all the unit cells belonging to the battery power supply device can be taken out only by two. It can be detected with a simple structure having a wire, and the holding piece and the connecting piece connecting the holding pieces are integrally formed on the end plate, thereby simplifying the structure and facilitating the connecting work. Can do.
[0013]
In the battery power supply device of the present invention, a non-circular nut member serving as a positive electrode is provided at one end of the battery module, and a non-circular nut member serving as a negative electrode is provided at the other end. By fastening the screw member screwed through the provided through hole, the battery module is fixed to the pass bar of both end plates, and the outer shape of the nut member that becomes the positive electrode and the outer shape of the nut member that becomes the negative electrode When the two shapes are overlapped with each other, both are not completely included in the other, and the end plate has a holding recess having a shape corresponding to the outer shape of the nut member. Provided, and a configuration in which the nut member is fitted and held in the holding recess, and the shape of the holding recess for fitting and holding the nut member serving as a positive electrode The holding recess which fits holding the nut member comprising a source electrode and a shape can be formed by the different shapes.
[0014]
With such a configuration, the battery module can be easily fixed to the pass bar by fastening the screw member, and the screw member is fastened by holding the non-circular nut member in the holding recess fitted therein. As a result, the battery module can be prevented from co-rotating at the time of fastening, so that the fastening work can be easily performed and the occurrence of twisting between the single cells can be prevented, and a nut member that becomes a positive electrode. And the shape of the holding | maintenance recessed part corresponding to this, the nut member used as a negative electrode, and the shape of the holding | maintenance recessed part corresponding to this differ, The problem of incorrect insertion of a battery module can be solved.
[0015]
In the battery power supply device of the present invention, one end plate of the holder case is fixed to the holder case body, and the other end plate is supported by the holder case body so as to be movable in the longitudinal direction of the battery module. it can.
[0016]
With such a configuration, the battery module can always be reliably supported even if the relationship between the holder case and the battery module changes due to the difference in thermal expansion coefficient.
[0017]
In the battery power supply device of the present invention, the holder case includes a battery module support plate parallel to both end plates, and the battery module support plate is provided with an insertion hole for loosely inserting each battery module, and the vibration isolation corresponding to each insertion hole. The anti-vibration sheet with an integrated ring is assembled along the battery module support plate by press-fitting each anti-vibration ring into each insertion hole. The battery module is configured to be supported by the battery module support plate in a state of being inserted into the vibration ring, and the battery module is provided with an insulating ring at a connection portion between the single cells, and is inserted into the vibration isolation ring therein. The insulating ring has a larger outer diameter than the other insulating rings, and the battery module support plate further includes a partition that partitions the battery module placement space in the holder case. Can be configured in which are integrally formed on the holder case.
[0018]
With such a configuration, it is possible to realize a vibration isolation structure that protects the battery module from external vibration with a simple configuration.
[0019]
In the present invention, it is possible to configure a battery power supply unit that includes a plurality of the battery power supply devices, and the battery power supply devices are electrically connected in series. In this battery power supply device, the battery power supply devices are connected to each other. The connecting cable can be flexible.
[0020]
According to the battery power supply collective device, high voltage power can be taken out, and it is suitable for a motor drive power source of an electric vehicle. Further, by connecting the battery power supply devices with a flexible connection cable, both battery power supplies Even when the relative position of the apparatus fluctuates, both can be reliably connected.
[0021]
In order to solve the above-described problems, the present invention provides a battery case in which a plurality of battery modules, each of which is formed by connecting a plurality of unit cells electrically and mechanically in series, are arranged in parallel and held in a holder case. An end plate used in a battery power supply device in which a path bar for electrically connecting battery module terminals is provided on end plates located at both ends, and is configured by a resin plate, and the pass bar is formed by insert molding. The holding recess that fits and holds the end of the battery module on one surface of the resin plate is formed so as to expose the portion to which the battery module end of the pass bar is connected, and on the other surface of the resin plate, The fastening recess is formed so as to expose a portion in contact with a screw member that fastens the end of the battery module of the pass bar.
[0022]
Since the end plate of the present invention has the above-described configuration, the support strength and rigidity of the battery module can be remarkably improved, and the work for assembling the battery module into the holder case can be simplified.
[0023]
In the end plate of the present invention, the shape of the holding recess that fits and holds the end of the battery module that becomes the positive electrode, and the shape of the holding recess that fits and holds the end of the battery module that becomes the negative electrode So that when the two shapes are overlapped, both are not completely included in the other, and the holding recess and fastening recess are functionally compatible. The fastening recess located on the back side of the holding recess that fits and holds the end of the battery module that serves as the positive electrode is fitted with the end of the battery module that serves as the negative electrode. The fastening recess formed on the back side of the holding recess that fits and holds the end of the battery module that is to be the negative electrode is formed so as to be a holding recess that holds the battery module positively. It can be configured to be formed as can be the holding recess which fits holding an end portion of the composed side.
[0024]
By providing such a configuration, it is possible to solve the problem of erroneous insertion of a battery module, and to provide an end plate that can be commonly used for both battery power supply devices in a battery power supply aggregation device including a pair of left and right battery power supply devices Can do.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a hybrid type automobile in which an internal combustion engine and a battery drive motor are combined to form a travel drive source. In this hybrid type vehicle, the internal combustion engine is operated under the optimum conditions, and when output shortage occurs due to running conditions, the output shortage is compensated by the output of the battery-driven motor, and regenerative power absorption is performed during deceleration, thereby Compared to an automobile with an internal combustion engine traveling alone, the traveling distance per unit fuel is dramatically increased.
[0026]
As a power source of the battery drive motor, a nickel hydride secondary battery is used, and is housed in the battery pack unit 1 shown in FIGS. The battery pack unit 1 is disposed in a space between the rear seat 2 and the trunk room 3 behind the rear seat 2. The battery pack unit 1 includes an exterior case 4 made of a resin molded product, a blower 5 disposed inside the exterior case 4, and a pair of left and right battery power supply devices 6, 6 disposed inside the exterior case 4. Each battery power supply device 6 is provided with 126 unit cells (also referred to as battery cells) 7 that are unit batteries of a nickel-hydrogen secondary battery, electrically connected in series, Power supply with a voltage of about 125 V is possible. The left and right battery power supply devices 6 and 6 are configured in the same manner, and both are electrically connected in series to form a battery power supply collective device 8 that can supply power at a voltage of about 250V. That is, power of about 250V is supplied to the battery drive motor.
[0027]
FIG. 3 shows a battery power supply aggregation device 8 composed of a pair of left and right battery power supply devices 6, 6.
[0028]
Each battery power supply device 6 includes a battery case 9 in which six unit cells 7 are electrically and mechanically connected in series in a row, and a total of 21 battery modules 9 in three rows and seven rows are arranged in parallel in a holder case. 10 is provided.
[0029]
As shown in FIGS. 4, 5, and 6, the battery module 9 connects the single cells 7 in series using a spot welding S via a metal connection ring 50. Further, a square nut 11 provided with a seat 11a at the positive electrode end of the battery module 9 is connected to the unit cell 7 at the positive electrode end through the connection ring 50 using spot welding. Further, a hexagonal nut 12 having a seat portion 12a at the negative electrode end of the battery module 9 is connected to the unit cell 7 at the negative electrode end through the connection ring 50 using spot welding. The dimension between the opposing sides of the square nut 11 and the dimension between the opposing sides of the hexagonal nut 12 are the same, and these nuts 11 and 12 are mistakenly inserted into the rectangular holding recess 30a and the hexagonal holding recess 30b described later. It is made not to be fitted. Insulating rings 13a and 13b made of resin for preventing a short circuit between the plus electrode and the minus electrode in the same unit cell are interposed in the connection portion. There are two types of insulating rings 13a and 13b having different outer diameters, and two of the six insulating rings 13a and 13b, indicated by 13b, have a large outer diameter.
[0030]
A PTC (Positive Temperature Coefficient) sensor 14 is bonded to the side peripheral surface of each unit cell 7. This PTC sensor is a temperature sensor that detects the abnormality by rapidly increasing the electrical resistance when the cell 7 is heated due to an internal abnormality, and for example, when the temperature reaches 80 ° C., the electrical resistance increases rapidly. Something is used. The PTC sensor is also called a polysensor. Needless to say, it is possible to use a temperature sensor other than the PTC sensor. The six PTC sensors 14 are connected in series by a connection line 15, and terminal pieces 16 made of a metal plate that can be bent are attached to both ends thereof. Both terminal pieces 16, 16 are arranged so as to protrude from both ends of the battery module 9.
[0031]
The outer peripheral surface of the battery module 9 is covered with a resin outer tube 17 having electrical insulation properties and heat shrink properties such as vinyl chloride. The PTC sensor 14 and its connection line 15 are protected together with the unit cell 7 by an outer tube 17. The square nut 11 serving as the positive electrode, the hexagonal nut 12 serving as the negative electrode, and the both terminal pieces 16 and 16 are formed from the outer tube. 17 is exposed.
[0032]
As shown in FIGS. 3, 7, and 8, the holder case 10 includes a case body 18, a first end plate 19, a second end plate 20, three cooling fin plates 21, 21, 21, and two sheets. It is mainly composed of vibration-proof rubber sheets 22 and 22. The case main body 18 is a resin-integrated molded product formed in a rectangular parallelepiped box shape whose upper and lower surfaces are open. The space 26 formed in the both end walls 23, 23 and the side walls 24, 24 constituting the four vertical walls is divided into three spaces 26a by two partition walls 25, 25 parallel to the both end walls 23, 23. 26b and 26c are divided almost equally. Each of the first partition space 26a on the second end plate 20 side, the second partition space 26b in the center, and the third partition space 26c on the first end plate 19 side is located at the center portion thereof, and both end walls 23, The cooling fin plate 21 is inserted from above so as to be parallel to the head 23 and fixed to the case body 18.
[0033]
The end walls 23, 23, the partition walls 25, 25 and the cooling fin plates 21, 21, 21 have three rows (horizontal direction) of insertion holes 23 a, 25 a, 21 a for inserting the battery module 9 in the same corresponding positions. A total of 21 vertical (vertical direction) 7 rows are provided. The three horizontal rows and the seven vertical rows of insertion holes 23 a, 25 a, 21 a are provided at equal vertical and horizontal pitches, and are formed to have a diameter larger than the outer diameter of the battery module 9.
[0034]
A first end plate 19 is screwed to the end wall 23 at one end of the case body 18 using screw holes 70 at four corners. Reference numeral 27 denotes a frame portion formed around the end wall 23 of the case body 18 for accommodating the first end plate 19 in a fitted state. A second end plate 20 is held at the other end of the case body 18 so as to be detachable from the end wall 23. That is, the second end plate 20 is fitted and held in a movable state at the frame portion 27 formed at the other end of the case body 18.
[0035]
As shown in FIGS. 7 to 12, the first end plate 19 is made of a resin plate, and the path bar 28 is embedded and fixed in the resin plate by insert molding, and the battery module 9 plus is attached to the inner surface 29 of the resin plate. A rectangular holding recess 30a for fitting and holding the square nut 11 serving as the electrode end and a hexagonal holding recess 30b for fitting and holding the hexagon nut 12 serving as the negative electrode end of the battery module 9 are provided. is there. These holding recesses 30a, 30b are provided at positions corresponding to the insertion holes 23a, 25a, 21a, and a total of 21 rows of 3 rows and 7 rows are provided as a whole. Then, as shown in FIG. 10, two types of holding recesses 30a and 30b are formed in such a relationship that one of adjacent ones is a square holding recess 30a on the plus side and the other is a hexagonal holding recess 30b on the minus side. It is provided alternately. Since each holding recess 30a, 30b is formed in a shape that fits into the nut 11, 12 at the electrode end of the battery module 9, the square nut 11 is held only by the square holding recess 30a, and the square It can prevent beforehand that it is hold | maintained at the holding | maintenance recessed part 30a.
[0036]
A total of 21 fastening recesses 32a and 32b are formed on the outer surface 31 of the first end plate 19 at positions corresponding to the holding recesses 30a and 30b. There are two types of fastening recesses 32a and 32b, a rectangular shape and a hexagonal shape, and the rectangular fastening recess 32a has exactly the same shape as the rectangular holding recess 30a. The fastening recess 32b has exactly the same shape as the hexagonal holding recess 30b. As shown in FIG. 10, a hexagonal fastening recess 32b is provided on the back surface of the rectangular holding recess 30a, and a square fastening recess 32a is provided on the back surface of the hexagonal holding recess 30b. Such a configuration can be used in common as the first end plates 19 and 19 of the pair of left and right battery power supply devices 6 and 6 constituting the battery power supply assembly device 8 shown in FIG. Because. The first end plate 19 for use in the left battery power supply device 6 is assembled to the case body 18 in the state described above, but the first end plate for use in the right battery power supply device 6 is used. 19 is assembled to the case main body 18 so that the inner and outer surfaces are reversed and those corresponding to the fastening recesses 32a and 32b are used as the holding recesses 30a and 30b.
[0037]
The metal path bar 28 that electrically connects the terminals of the battery module 9 is embedded and fixed by insert molding so as to be positioned at the center of the resin plate of the first end plate 19 in the thickness direction. The pass bar 28 is exposed to the outside in the portion surrounded by the holding recesses 30a and 30b and the fastening recesses 32a and 32b. A through hole 33 is provided at the center of the exposed portion.
[0038]
The nuts 11 and 12 at the end of the battery module 9 are screwed into bolts 34 inserted through the through holes 33 from the fastening recesses 32a and 32b while being fitted and held in the holding recesses 30a and 30b. The nuts 11 and 12 are electrically and mechanically coupled to the pass bar 28 by fastening the bolts 34. Since the square nut 11 serving as the positive electrode of the battery module 9 is definitely fitted and held in the square holding recess 30a on the positive side, the positive electrode of the battery module 9 is securely connected to the positive side portion of the pass bar 28. Will be. Similarly, since the hexagonal nut 12 serving as the negative electrode of the battery module 9 is definitely fitted and held in the negative hexagonal holding recess 30b, the positive electrode of the battery module 9 is securely connected to the negative side portion of the pass bar 28. Will be connected to. Further, since the nuts 11 and 12 are prevented from rotating by the holding recesses 30a and 30b, the fastening operation by the bolts 34 can be smoothly advanced.
[0039]
As shown in FIGS. 8, 13, and 14, the second end plate 20 is made of a resin plate as in the case of the first end plate 19, and the pass bar 28 is embedded and fixed in the resin plate by insert molding. 29, holding recesses 30a and 30b, and outer recesses 31 are provided with fastening recesses 32a and 32b. As in the case of the first end plate 19, the nuts 11 and 12 at the end of each battery module 9 are electrically and mechanically coupled to the path bar 28 by bolts 34. A hexagonal holding recess 30b of the second end plate 20 is disposed at a portion of the first end plate 19 that faces the square holding recess 30a, and is opposed to the hexagonal holding recess 30b of the first end plate 19. Needless to say, the rectangular holding recess 30a of the second end plate 20 is disposed at the portion to be operated.
[0040]
The 21 battery modules 9 arranged in parallel in the battery power supply device 6 are electrically connected in series by the pass bar 28 of the first end plate 19 and the pass bar 28 of the second end plate 20. The path bar 28 embedded and fixed in the first end plate 19 is shown in FIG. 10 as (1), (3), (5), (7), (9), (11), (13), (15), ( There are eleven (17), (19) and (21), and the pass bars 28 embedded and fixed in the second end plate 20 are shown in (2), (4), (6), (8), ( 10), (12), (14), (16), (18), (20), (22), there are 11 sheets, and the connection relationship between these and each battery module 9 is shown in FIG. .
[0041]
The pass bars shown in (1) and (22) are more appropriately referred to as the minus terminal bar and the latter as the plus terminal bar rather than the pass bar, and are not included in the concept of the pass bar of the present invention. However, for convenience of description of the present embodiment, it will be referred to as a pass bar and will be described below. The path bars shown in (2) to (21) have a contact point with a positive electrode and a contact point with a negative electrode of an adjacent battery module 9 in electrical series, and electrically connect the adjacent battery modules 9 in series. is doing. For example, as shown in FIG. 15, the path bar shown in (2) includes a plus electrode contact 2a and a minus electrode contact 2b, and the path bar shown in (21) includes a plus electrode contact 21a and a minus electrode contact 21b. In FIG. 15, a contact indicated by 1 ab is a negative terminal in the entire battery power supply assembly 8, and a connection end ring 35 a (see FIG. 7) of the power cable 35 connected to the battery drive motor is connected thereto. . Further, in FIG. 15, a contact indicated by 22ab is a positive terminal of one battery power supply device 6, and a connection end portion of a connection cable 36 (see FIG. 3) connected to the negative terminal of the other battery power supply device 6 here. Is connected. The voltage between the two contacts 1ab and 22ab is about 125V. Note that the connection cable 36 is flexible and ensures the electrical connection between the battery power supply devices 6 and 6 even when the second end plate 20 moves due to thermal expansion and contraction of the battery module 9. To be able to. As shown in FIGS. 7, 10, 12, and 15, the first end plate 19 is a resin plate formed by insert molding lead wires 37 for measuring the voltage between two battery modules 9 and 9 units. It is buried inside. As indicated by the one-dot chain line in FIG. 15, the above (1), (3), (5), (7), (9), (11), (13), (15), (17), (19) , (21) is connected to a lead wire 37, for example, the voltage V between the path bars (1) and (3). 1-3 And the voltage V between the pass bars of (19) and (21) 19-21 It is comprised so that can be measured. Said voltage V 1-3 Shows the voltage between the two battery modules 9, 9 connected in series between the (1) pass bar and the (3) pass bar, in other words, the 12 single cells 7, FIG. Indicated voltage V 3-5 , V 5-7 ... V 19-21 Shows the voltage between the two similar battery modules 9 and 9. When these voltages are measured and an abnormality is detected, an abnormality has occurred in at least one of the 12 unit cells 7 belonging to the corresponding two battery modules 9, 9. Correspondence can be limited to a relatively narrow range.
[0042]
Each lead wire 37 is wired as shown in FIG. 10 in the resin plate of the first end plate 19, collected at a predetermined position on one side of the first end plate 19, and taken out to the outside. . Then, as shown in FIG. 7, each lead wire 37 is fixed to the tape-shaped resin sheet 38 and guided to the voltage measuring unit.
[0043]
As shown in FIGS. 10 and 11, a fuse 39 is attached to the connecting portion between each lead wire 37 and the pass bar 28 to prevent an excessive current from flowing through the lead wire 37. The fuse 39 is attached to a lead wire connecting extension piece (fuse attachment piece) 40 provided integrally with the pass bar 28 by retrofitting. The front and back surfaces of the central portion of the extension piece 40 are exposed to the outside through the openings 41 and 42. After a part of the extension piece 40 is punched out by post-processing to be in a cut-off state, a cut-off portion (cut-off portion) Is indicated by a virtual line in FIG. 11B.) A fuse 39 is attached so as to be conductive on both sides. The openings 41 and 42 are then resin molded 39a.
[0044]
The wiring of the lead wire 37 is provided only on the first end plate 19 and is not provided on the second end plate 20 at all.
[0045]
As shown in FIGS. 7, 10, and 12, the first end plate 19 is provided with a holding piece 43 for connecting the terminal pieces 16 of the connection line 15 in which six PTC sensors 14 are connected in series. It is fixed to the resin plate by molding.
[0046]
The holding piece 43 includes a screw hole 45 in a portion exposed to the through opening 44 provided in the first end plate 19. Then, the terminal piece 16 is inserted into the through-opening 44 and then bent, and then the terminal piece 16 is electrically and mechanically connected to the holding piece 43 as shown in FIG. .
[0047]
The holding piece 43 has two screw holes 45 and 45 at both ends, and has a function as a pass bar for electrically connecting the terminal pieces 16 and 16 of the adjacent ones of the connecting wires 15. However, the holding piece indicated by P in FIGS. 10 and 16 has only a single screw hole 45 and serves only as a minus terminal.
[0048]
Also in the second end plate 20, as shown in FIG. 13, a holding piece 43 similar to the above is fixed to the resin plate by insert molding. The holding piece 43 of the second end plate 20 also has two screw holes 45, 45 at both ends, and functions as a pass bar. However, the holding piece indicated by Q in FIGS. 13 and 16 has only a single screw hole 45 and serves only as a plus terminal.
[0049]
FIG. 16 shows that the PTC sensor 14 bonded to all 126 unit cells 7 arranged in the battery power supply device 6 is electrically connected in series by the holding pieces 43 of the first end plate 19 and the second end plate 20. The connected state is shown. Since the battery module 9 shown in FIG. 15 is electrically connected in series using the path bar 28, detailed description thereof is omitted.
[0050]
External lead wires 47 and 48 are connected to a holding piece 43 as a negative terminal indicated by P and a holding piece 43 as a positive terminal indicated by Q (see FIG. 3), and are connected to a resistance measuring device 49. When even one of the 126 unit cells 7 is abnormally heated, the resistance value of the PTC sensor 14 adhered to the unit cell 7 is dramatically increased. As a result, the resistance measuring device 49 detects the abnormality. . Therefore, the temperature rise abnormality of all the unit cells 7 of the battery power supply device 6 can be detected by a simple structure in which the number of the external lead-out lines 47 and 48 is kept to a minimum of two. The other battery power supply device 6 constituting the battery power supply aggregation device 8 is also provided with the same device.
[0051]
As shown in FIGS. 3, 7, 8, and 9, 21 battery modules 9 are fixed to the first end plate 19 and the second end plate 20 in the holder case 10 of the battery power supply device 6. Has been supported. Each battery module 9 is supported by the insertion holes 25a of the partition walls 25 and 25 through vibration-proof rings 51 and 51 at two positions about 1/3 in length from both ends in the longitudinal direction. The vibration isolation ring 51 is integrally formed on the vibration isolation rubber sheet 22 so as to protrude from the surface thereof. The anti-vibration rubber sheet 22 having 21 anti-vibration rings 51 is attached along one surface of the partition wall 25 by press-fitting all the anti-vibration rings 51 into the insertion holes 25a of the partition wall 25.
[0052]
As already described, the holder case 10 is divided into three spaces, that is, in order from the second end plate 20 to the first end plate 19 by the two partition walls 25, 25, in order, the first partition space 26a and the second partition space 26b. The cooling adjustment fin plate 21 is inserted into the central portion of each of the partition spaces 26 a, 26 b, and 26 c from above and fixed to the case body 18. FIGS. 8 and 17 show cooling adjustment fins 52 (first stage fins 52a, second stage fins 52b, third stage fins 52c, fourth stage fins 52d, and fifth stage fins 52e formed on the cooling adjustment fin plate 21. FIG. , Sixth stage fins 52f, seventh stage fins 52g, and eighth stage fins 52h) and the battery modules 9 loosely inserted into the insertion holes 21a of the cooling adjustment fin plate 21 are shown. As is well known, the battery power supply device 6 requires means for cooling the battery in order to prevent abnormal temperature rise due to battery heat generation. In the present embodiment, the lower opening portion of the holder case 10 is the air introduction portion 53 and the upper opening portion is the air outlet portion 54, and the vertical seven rows are formed by the air flow flowing upward (downstream) from below (upstream). The battery modules 9 arranged horizontally in three horizontal rows are cooled.
[0053]
The air cooling structure of the battery module 9 will be described by taking the second partition space 26b sectioned to be located at the center as an example. Each cooling adjustment fin 52 protruding in both directions from the plate body portion 21 of the cooling adjustment fin plate 21 is illustrated in FIG. 7, As shown in FIG. 8, it extends to the position close to the partition walls 25, 25, and is configured to be able to adjust the flow direction and flow velocity of the air flow. As shown in FIG. 17, three insertion holes 21a (the first to seventh insertion holes in the lowermost stage (sometimes referred to as the first stage) are denoted by (1) to (7) in FIG. 1) A first-stage fin 52a having an arc-shaped cross section is provided around each lower side of (1), and the ratio of direct air hitting the first-stage battery module 9 is suppressed as much as possible. Three first insertion holes {circle around (1)} and three second insertion holes {circle around (2)}, three second insertion holes {circle around (2)}, and third upper thirds 3 There are three insertion holes (3), three insertion holes (3) in the third stage, and three insertion holes (4) in the fourth stage above the corresponding positions. A second-stage fin 52b, a third-stage fin 52c, and a fourth-stage fin 52d having a flat H-shape with a cut-off section are provided. The second step fin 52b has break portions t and t formed on both sides of the H-shaped section, and the third step fin 52c has a break portion t at the center of the H-shaped section. 1 The fourth step fin 52d has a wide break t at the center of the H-shaped section. 2 And the ratio of direct air hitting the second-stage battery module 9 rather than the first-stage battery module 9 is increased, and the third-stage battery module 9 is directly air rather than the second-stage battery module 9. Is increased, and the rate of direct air hitting the fourth-stage battery module 9 is increased rather than the third-stage battery module 9.
[0054]
Between the three insertion holes (4) on the fourth stage and the three insertion holes (5) on the fifth stage thereabove, there are two elliptical cross sections (the one shown in FIG. For this reason, the cross-sectional shape is hollow, but the fin may have no hollow portion. The fin may have two cross-sectionally elongated semi-elliptical shapes (even a hollow one having no hollow portion). 5th fin 52e which consists of four fins arranged side by side with the fin of (.) May be provided. Two oblong fins located in the center are located at the center point of the four left, right, top and bottom insertion holes (4), (4), (5), and (5), and on both ends. The two semi-elliptical fins in cross section are located on the outer side in the middle of the corresponding upper and lower insertion holes (4) and (5) and are in contact with the side of the plate body 21b. Between the three insertion holes (5) of the fifth stage and the three insertion holes (6) of the sixth stage above, and the three insertion holes (6) of the sixth stage and the upper Between the seven stages of three insertion holes {circle around (7)}, the sixth stage fin 52f and the seventh stage fin 52g, which are substantially the same shape as the fifth stage fin 52e and are composed of four fins at the same relative positions, are also provided. Is provided. Furthermore, at the upper position of the three insertion holes {circle around (7)} of the uppermost stage (sometimes referred to as the seventh stage), a fin having a shape in which the upper half of each fin of the seventh stage fin 52g is missing, An eighth step fin 52h made of four fins in the same relationship position as the step fin 52g is provided. The cross-sectional area of each fin of the sixth-stage fin 52f is larger than the cross-sectional area of each fin of the fifth-stage fin 52e, and the seventh-stage fin 52g is larger than the cross-sectional area of each fin of the sixth-stage fin 52f. The cross sectional area of each fin is large. Thus, by increasing the cross-sectional area of the cooling adjustment fins 52e, 52f, and 52g as it goes upward, the flow path of the air flow formed between the battery module 9 and the cooling adjustment fin 52 goes upward. The air flowing around the fifth-stage battery module 9 is made larger than the flow velocity of the air flowing around the fourth-stage battery module 9 so that the flow velocity of the air flowing around the fifth-stage battery module 9 is larger. The flow velocity of the air flowing around the sixth stage battery module 9 is made larger than the flow velocity of the sixth stage battery module 9, and flows around the seventh stage battery module rather than the flow velocity of the air flowing around the sixth stage battery module 9. The air flow rate is increased. This utilizes the fact that the cooling effect increases in proportion to the square root when the air flow velocity is increased.
[0055]
Although the air cooling structure of the battery module 9 has been described above by taking the second partition space 26b as an example, the air cooling structure in the other first partition space 26a and the third partition space 26c is configured similarly. In any case, among the many battery modules 9 arranged in parallel in a direction orthogonal to the air flow flowing upward from below, the battery modules 9 belonging to the lower group (the first stage in the case of FIG. 17). To the fourth stage), the lower side of the battery module 9 is covered with shielding fins 52a to 52d that adjust the amount of air directly hitting the battery module 9, and the lowermost stage (first stage). The amount of air hitting the battery module 9 is gradually increased toward the upper stage (second stage, third stage, and fourth stage). Thus, while preventing the overcooling of the battery module 9 at the lowermost stage and increasing the amount of air hitting the battery module 9 so as to compensate for the cooling effect of the air gradually rising due to the battery heat generation toward the upper stage, The stage (first to fourth) battery modules 9 can be cooled substantially uniformly.
[0056]
As shown in FIG. 17, the air that cools the battery modules 9 belonging to the lower group is formed between passages 55 and 55 formed between the left and right battery modules 9 and between the battery modules 9 and the side walls 24. After the passages 56 and 56 are formed, a part of the passages 56 and 56 are taken into the battery module 9 side, and then rejoin the passages 55 and 56 to reach the lower side of the fifth-stage battery module 9. The air flow is then used to cool the battery modules 9 belonging to the upper group (in the case shown in FIG. 17, those arranged in the fifth to seventh stages). Since the four-stage battery module 9 to which it belongs is cooled, the air temperature becomes considerably high, and the cooling effect is reduced. In order to compensate for this, the air flow is reduced for cooling the battery modules 9 belonging to the upper group, and the flow velocity of the air flow around the battery modules 9 is increased. Above the passages 55, 55, 56, 56, they are located obliquely below the fifth, sixth, and seventh battery modules 9 and obliquely above the seventh battery module 9. In addition, flow restricting fins 52e to 52h for increasing the air flow velocity by narrowing the distance between the battery module 9 and the upper (fifth, sixth, seventh) are arranged. In order to compensate for the decrease in the cooling effect of the air that gradually rises in temperature by gradually decreasing the interval as it goes, the flow velocity of the air flow around the battery module 9 is increased, and each stage (fifth to seventh stages) is increased. The battery module 9 of the stage) can be cooled almost uniformly.
[0057]
In this way, all the battery modules 9 from the lowermost stage to the uppermost stage are configured to be cooled substantially uniformly. In the present embodiment, the lower four-stage battery module 9 is used for the shielding fins 52a to 52d, and the upper three-stage battery module 9 is used for the flow path restriction type fins 52e to 52h to The battery module 9 is configured to be cooled almost uniformly. For example, the lower three-stage battery module 9 is made of shielding fins, and the fin corresponding to the middle fourth-stage battery module 9 is Needless to say, it is possible to adjust the air flow of the upper three-stage battery module 9 without using the flow-fining type fins.
[0058]
Since the battery used in this embodiment is a nickel hydride secondary battery, it is necessary to ensure safety against hydrogen leaking from the battery can at the time of abnormality. The air is sent into the battery power supply device 6 by the pumping of the blower 5 equipped with a sirocco fan, and the hydrogen is sent into and around the blower 5 and the motor 57 that drives the blower 5. It is especially important to take care not to get lost. Therefore, in the present embodiment, as shown in FIGS. 8, 17, and 18, the blower 5 and the motor 57 are arranged on the lower side of the holder case 10, and the blower port 58 is positioned below the holder case 10. The air pumped from the blower 5 reaches the air introduction part 53 at the lower end of the holder case 10 through the air supply chamber 59 formed in the lower part of the outer case 4 and then moves from the bottom to the top in the holder case 10. The battery module 9 flows and cools, and then exits the air outlet 54 of the holder case 10, and then passes through an air discharge chamber 60 formed above the outer case 4 to reach the upper side end of the outer case 4. It is configured to be discharged from the formed discharge port 61 to the outside of the outer case 4. By adopting such a configuration, even if hydrogen leaks from the battery module 9 in the holder case 10, it is possible to prevent hydrogen from being sent to the blower 5 side.
[0059]
FIG. 18 shows a structure in which cooling air is pumped to the left and right battery power supply devices 6, 6 with one blower 5. The blower 5 has a pair of left and right sirocco fans and air blowing ports 58 and 58, takes air in the vehicle compartment from an air intake 62, and air supply chambers 59 and 59 on the left and right from a pair of air blowing ports 58 and 58. The air is sent out evenly.
[0060]
Each air supply chamber 59 is configured by a space surrounded by the bottom plate portion 4a of the outer case 4, the front wall 4b standing at the front side position of the bottom plate portion 4a in FIG. 18, and the lower surface of the holder case 10. A plurality of curved rectifying guides 64a, 64b, and 64c for guiding the air from the blower port 58 to the back side and the side are provided upright on the bottom plate portion 4a at the inlet 63 facing the blower port 58. . The inlet 63 is provided on the center side in the width direction of the outer case 4 and is disposed so as to be positioned below the first partition space 26 a of the holder case 10. In the air supply chamber 59, the bottom plate portion 4a has a slope 65 that gradually becomes higher toward the outer side, that is, the second partition space 26b and the third partition space 26c, and gradually toward the back side. It is formed so as to have a slope 66 that becomes a high position. Further, a short wind direction guide 67 for guiding air upward is provided at a position below the boundary between the second partition space 26b and the third partition space 26c of the slope 65 (see FIG. 8).
[0061]
The air taken in from the inlet 63 passes through two air passages formed in the middle of the three rectifying guides 64a, 64b and 64c, and is guided to the back side and the second and third partition spaces 26b and 26c. At the same time, a part thereof is guided into the first partition space 26a. At this time, in order to prevent the air flow from passing through the air passage and the amount of air introduced into the first partition space 26a from being insufficient, the air is moved upward near the inlet portion of the air passage on the second end plate 20 side. A wind direction guide 68 is provided. Part of the air that has exited the two air passages is guided into the second partition space 26b, and the remaining part is guided below the third partition space 26c. At this time, the wind direction guide 67 is provided so that the amount of air guided into the second partition space 26b is not insufficient. The air guided below the third partition space 26c is guided into the third partition space 26c.
[0062]
By providing the flow straightening guides 64a, 64b, 64c, the wind direction guides 67, 68, and the slopes 65, 66 as described above, the amount of air taken into each of the partition spaces 26a, 26b, 26c is made substantially uniform, and each partition The amount of air taken in the front side and the back side in the space is prevented from becoming uneven. The two unit cells 7 arranged in the second partition space 26b are located at the center position of the battery module 9 and are affected by the heat generated by the unit cells 7 arranged in the first and third partition spaces 26a and 26c. Since it is easy to receive, compared with these single cells 7, more cooling by an airflow is required. For this reason, it is preferable to design the wind direction guide 67 so that the amount of air guided into the second partition space 26b is slightly larger than the amount of air guided into the other partition spaces 26a and 26c.
[0063]
As shown in FIGS. 18 and 8, the outer case 4 includes a holder case mounting seat 71 on the bottom plate portion 4 a, and the left and right holder cases 10 and 10 are bolts and nuts 73 at the legs 72. Installed and fixed by. Further, a peripheral portion of the outer case 4 has a flange portion 74 attached to the automobile body.
[0064]
In the above embodiment, as shown in FIG. 15, all the battery modules 9 in the battery power supply device 6 are always electrically connected in series, but in order to ensure safety during repair work or the like, It is preferable to provide a safety plug 75 for cutting the series connection. Therefore, as shown by phantom lines in FIG. 15, for example, the pass bar 28 of (17) is exposed to the opening provided in the first end plate 19, and the portion indicated by N is cut by post-processing, 17 a, What is necessary is just to provide the bypass which connected the location shown by 17b, and the safety plug 75 which can be opened and closed by conducting wire 76,77.
[0065]
【The invention's effect】
According to the present invention, it is possible to provide a battery power supply device that can remarkably improve the supporting strength and rigidity of the battery module, and that can be assembled into the holder case easily and without erroneous insertion, and an end plate used therefor. can do.
[0066]
Further, according to the present invention, when the battery module is fastened to the pass bar, it is possible to solve the problem of twisting between the single cells constituting the battery module, and to detect the voltage of the battery module and abnormal temperature rise of the single cell. It is possible to achieve an effect that the detection can be performed rationally with a simple structure.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing a relationship between an automobile and a battery pack unit.
FIG. 2 is a perspective view schematically showing a battery pack unit.
FIG. 3 is a perspective view showing a battery power supply assembly device.
4A is a front view showing a battery module, FIG. 4B is a left side view thereof, and FIG. 4C is a right side view thereof.
FIG. 5 is a perspective view of a battery module in which an exterior tube is indicated by a virtual line.
FIG. 6 is a partially cutaway cross-sectional view showing the main part of the battery module.
FIG. 7 is an exploded perspective view showing a battery power supply device.
FIG. 8 is a cross-sectional view showing a battery power supply device.
FIG. 9 is an enlarged cross-sectional view showing a main part of the battery power supply device.
FIG. 10 is a front view of the first end plate as viewed from the inner surface side.
11A is an enlarged sectional view taken along line AA in FIG. 10, and FIG. 11B is a front view thereof.
12 is an enlarged sectional view taken along line BB in FIG.
FIG. 13 is a front view of the second end plate as viewed from the outer surface side.
14 is an enlarged cross-sectional view taken along the line CC in FIG.
FIG. 15 is a principle view showing a connection state of battery modules.
FIG. 16 is a principle diagram showing a connection state of a PTC sensor.
FIG. 17 is a cross-sectional view of a battery pack unit.
FIG. 18 is an exploded perspective view of the battery pack unit.
[Explanation of symbols]
6 Battery power supply
7 cells
8 Battery power unit
9 Battery module
10 Holder case
11 Square nut (nut member)
12 Hexagon nut (nut member)
13a Insulation ring
13b Insulation ring
14 PTC sensor (temperature sensor)
15 connecting lines
18 Case body (Holder case body)
19 First end plate
20 Second end plate
22 Anti-vibration rubber sheet (anti-vibration sheet)
25 Bulkhead (Battery module support plate)
25a insertion hole
28 Passbar
30a Rectangular holding recess
30b Hex-shaped holding recess
32a Square-shaped concave recess
32b Recess for hexagonal fastening
33 Through hole
34 Bolt (screw member)
36 Connection cable
37 Lead wire
39 fuse
40 Extension piece (fuse mounting piece)
43 Holding piece (also serves as holding piece and connecting piece)
50 Connection ring
51 Anti-vibration ring

Claims (27)

  1. A large number of battery modules, in which a plurality of cells are electrically and mechanically connected in series in a row, are arranged in parallel and are held in a holder case, and each end plate located at both ends of the holder case is placed on each end plate. A battery power supply device provided with a pass bar for electrically connecting terminals of a battery module,
    A battery power supply device characterized in that the end plate is made of a resin plate, and the pass bar is fixed to the end plate by insert molding.
  2. The battery power supply device according to claim 1, wherein the single battery is a nickel hydride secondary battery.
  3. 3. All the battery modules arranged in the holder case are alternately connected by a pass bar of one end plate and a pass bar of the other end plate, and are electrically connected in series as a whole. Battery power supply.
  4. The battery power supply device according to any one of claims 1 to 3, wherein the battery modules are horizontally arranged in a matrix on a straight line and held in a holder case.
  5. The battery power supply device according to any one of claims 1 to 4, wherein a lead wire for measuring a voltage between terminals of one or a plurality of battery modules is embedded in the end plate by insert molding.
  6. The battery power supply device according to claim 5, wherein a fuse is disposed in the middle of a lead wire for measuring a voltage between terminals, and the fuse is attached to a fuse attachment piece fixed to the end plate by insert molding.
  7. The battery power supply device according to claim 5 or 6, wherein each lead wire is collected at one place and taken out from the end plate.
  8. The lead wire is embedded in only one of the two end plates by insert molding, and each lead wire is connected to each pass bar so that the voltage between the terminals of the two battery modules can be measured. Item 8. The battery power supply device according to any one of Items 5 to 7.
  9. 9. A temperature sensor whose electrical resistance increases rapidly at each cell when the temperature rises is externally attached, and these temperature sensors are connected in series to detect an abnormality in temperature rise at least in units of battery modules. A battery power supply device according to claim 1.
  10. The battery power supply device according to claim 9, wherein a holding piece for holding an end portion of a connection line connecting the temperature sensors in series is fixed to the end plate by insert molding.
  11. The battery power supply according to claim 10, wherein a connection line is provided for each battery module unit, and holding pieces for holding these end portions are electrically connected in series to detect a temperature rise abnormality in a plurality of battery module units. apparatus.
  12. The battery power supply device according to claim 11, wherein a connection piece for electrically connecting the holding pieces in series is fixed to the end plate by insert molding.
  13. 13. A temperature sensor whose electrical resistance increases rapidly when temperature rises is attached to all the single cells arranged in the holder case from outside, and all these temperature sensors are connected in series to detect temperature rise abnormalities. Battery power supply.
  14. The battery module was provided with a non-circular nut member serving as a positive electrode at one end and a non-circular nut member serving as a negative electrode at the other end, and these nut members were screwed through through holes provided in the pass bar. The battery power supply device according to claim 1, wherein the battery module is fixed to the pass bars of both end plates by fastening the screw member.
  15. Claim that the outer shape of the nut member to be the plus electrode and the outer shape of the nut member to be the minus electrode are different from each other, and when both shapes are overlapped, neither is completely included in the other Item 15. The battery power supply device according to Item 14.
  16. The battery power supply according to claim 14 or 15, wherein a holding recess having a shape corresponding to an outer shape of the nut member is provided on the end plate, and the nut member is fitted and held in the holding recess.
  17. The battery power supply device according to claim 16, wherein the shape of the holding recess for fitting and holding the nut member serving as the plus electrode and the shape of the holding recess for fitting and holding the nut member serving as the minus electrode are different.
  18. The battery power source according to claim 1, wherein one end plate of the holder case is fixed to the holder case body, and the other end plate is supported by the holder case body so as to be movable in the longitudinal direction of the battery module. apparatus.
  19. The holder case has a battery module support plate parallel to both end plates, a battery module support plate is provided with an insertion hole for loosely inserting each battery module, and a vibration isolation ring corresponding to each insertion hole is integrally provided. The sheet is assembled so that each vibration isolation ring is press-fitted into each insertion hole so as to follow the battery module support plate, and the middle part in the longitudinal direction of each battery module is inserted into each vibration isolation ring. The battery power supply device according to claim 14, which is supported by a battery module support plate.
  20. 20. The battery power source according to claim 19, wherein the battery module includes an insulating ring at a connection portion between the single cells, and an insulating ring at a portion inserted into the vibration isolating ring has a larger outer diameter than other insulating rings. apparatus.
  21. 21. The battery power supply device according to claim 19 or 20, wherein the battery module support plate is constituted by a partition partitioning a battery module installation space in the holder case, and the partition is integrally formed with the holder case.
  22. A battery power supply assembly comprising a plurality of battery power supply devices according to any one of claims 1 to 21, wherein the battery power supply devices are electrically connected in series.
  23. The battery power collecting device according to claim 22, wherein the connection cable for connecting the battery power devices is flexible.
  24. A large number of battery modules formed by electrically and mechanically connecting a plurality of single cells in a line in series are held in parallel in a holder case, and battery modules are mounted on end plates located at both ends of the holder case. An end plate used in a battery power supply device provided with a pass bar for electrically connecting the terminals of
    It is composed of a resin plate, the pass bar is embedded and fixed in the resin plate by insert molding, and the holding recess that fits and holds the end of the battery module on one surface of the resin plate is connected to the end of the battery module of the pass bar. An end characterized in that it is formed so as to be exposed, and a fastening recess is formed on the other surface of the resin plate so as to expose a portion where a screw member that fastens the battery module end of the pass bar contacts. plate.
  25. The shape of the holding recess that fits and holds the end of the battery module on the positive electrode side and the shape of the holding recess that holds and holds the end of the battery module on the side of the negative electrode are different shapes. 25. An end plate according to claim 24, wherein when the two are superposed, neither is completely contained in the other.
  26. The end plate according to claim 24 or 25, wherein the holding recess and the fastening recess are formed so as to be functionally compatible.
  27. The fastening recess located on the back side of the holding recess for fitting and holding the end of the battery module on the side serving as the positive electrode can serve as a holding recess for fitting and holding the end on the side of the battery module serving as the negative electrode. The fastening recess formed on the back side of the holding recess that fits and holds the end of the battery module on the side of the negative electrode is held to fit the end of the battery module on the side of the positive electrode. 26. The end plate according to claim 25, wherein the end plate is formed to be a recess.
JP06995697A 1997-03-24 1997-03-24 Battery power unit and end plate used for it Expired - Lifetime JP3774977B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP06995697A JP3774977B2 (en) 1997-03-24 1997-03-24 Battery power unit and end plate used for it

Applications Claiming Priority (22)

Application Number Priority Date Filing Date Title
JP06995697A JP3774977B2 (en) 1997-03-24 1997-03-24 Battery power unit and end plate used for it
EP20000107968 EP1030389B1 (en) 1997-03-24 1998-03-20 Battery housing with integrated cables for voltage measuring
EP20000107969 EP1030390B1 (en) 1997-03-24 1998-03-20 Battery power source unit
EP19980302116 EP0892450B1 (en) 1997-03-24 1998-03-20 Battery power source unit
DE1998623745 DE69823745T2 (en) 1997-03-24 1998-03-20 Power supply unit containing modular battery
EP20030016665 EP1376733A3 (en) 1997-03-24 1998-03-20 Cooling device for battery power source
DE1998621519 DE69821519T2 (en) 1997-03-24 1998-03-20 Power supply unit containing a modular battery
EP20030016666 EP1376734A3 (en) 1997-03-24 1998-03-20 Cooling device for battery power source
DE1998610659 DE69810659T2 (en) 1997-03-24 1998-03-20 Battery housing with integrated cables for voltage measurement
US09/046,416 US6111387A (en) 1997-03-24 1998-03-23 End plate incorporated in battery power source unit, and cooling device for same
KR19980009934A KR100360968B1 (en) 1997-03-24 1998-03-23 End plate incorporated in battery power source unit. and cooling device for same
CNB200610092465XA CN100492754C (en) 1997-03-24 1998-03-24 Battery power cooling device
CNB001046845A CN1181574C (en) 1997-03-24 1998-03-24 End board for battery power source and cooling device for battery power source
CNB981051332A CN1202589C (en) 1997-03-24 1998-03-24 Header for hattery power device and cooling means of battery power
CNB2004100589690A CN1303722C (en) 1997-03-24 1998-03-24 End plate incorporated in battery power source unit and cooling device for battery power source
CNB2005100551819A CN1326284C (en) 1997-03-24 1998-03-24 End plate for power supply of battery and cooling unit thereof
CNB001046837A CN1226153C (en) 1997-03-24 1998-03-24 Terminal board for accumulator power source and cooling device for accumulator power source
KR1020000024522A KR100358618B1 (en) 1997-03-24 2000-05-09 Battery power supply apparatus
KR1020000024524A KR100358619B1 (en) 1997-03-24 2000-05-09 Battery power supply apparatus, battery power supply assembly, end plate used therein, and apparatus for cooling battery power supply
US09/613,069 US6211646B1 (en) 1997-03-24 2000-07-10 End plate incorporated in battery power source unit
US09/612,678 US6211645B1 (en) 1997-03-24 2000-07-10 End plate incorporated in battery power source unit, and cooling device
JP2006102009A JP4487967B2 (en) 1997-03-24 2006-04-03 Battery power cooling system

Publications (2)

Publication Number Publication Date
JPH10270006A JPH10270006A (en) 1998-10-09
JP3774977B2 true JP3774977B2 (en) 2006-05-17

Family

ID=13417624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP06995697A Expired - Lifetime JP3774977B2 (en) 1997-03-24 1997-03-24 Battery power unit and end plate used for it

Country Status (2)

Country Link
JP (1) JP3774977B2 (en)
CN (1) CN100492754C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014134142A2 (en) 2013-02-27 2014-09-04 Ioxus, Inc. Energy storage device assembly
US9892868B2 (en) 2013-06-21 2018-02-13 Ioxus, Inc. Energy storage device assembly
US9899643B2 (en) 2013-02-27 2018-02-20 Ioxus, Inc. Energy storage device assembly

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002142B4 (en) 1999-01-28 2004-04-29 Sanyo Electric Co., Ltd., Moriguchi Power supply containing rechargeable batteries
JP3553812B2 (en) 1999-02-19 2004-08-11 三洋電機株式会社 Power supply
JP4425369B2 (en) * 1999-04-23 2010-03-03 富士重工業株式会社 Battery power supply
JP4547741B2 (en) 1999-10-06 2010-09-22 パナソニック株式会社 Battery holding device
DE10064648C2 (en) 1999-12-28 2003-09-18 Honda Motor Co Ltd battery unit
JP4863577B2 (en) * 2001-06-20 2012-01-25 トヨタ自動車株式会社 Battery pack
JP3848565B2 (en) * 2001-11-27 2006-11-22 松下電器産業株式会社 Battery connection structure, battery module, and battery pack
JP4570863B2 (en) * 2003-10-30 2010-10-27 アァルピィ東プラ株式会社 Bipolar plate stacked battery
JP4245525B2 (en) 2004-07-22 2009-03-25 三洋電機株式会社 Battery device for vehicle power supply
EP2071647B1 (en) * 2004-10-08 2018-01-17 Honda Motor Co., Ltd. Interlock structure of electric component box
JP4823535B2 (en) * 2005-02-14 2011-11-24 本田技研工業株式会社 Battery connection plate
KR100857019B1 (en) * 2005-04-19 2008-09-05 주식회사 엘지화학 Mechanically and Electrically Connecting Member
JP5127154B2 (en) 2005-05-23 2013-01-23 パナソニック株式会社 Battery module
JP4783137B2 (en) 2005-12-15 2011-09-28 日立ビークルエナジー株式会社 Battery module
JP5091427B2 (en) * 2006-06-06 2012-12-05 パナソニック株式会社 Battery holder and battery pack
JP4448111B2 (en) 2006-07-31 2010-04-07 日立ビークルエナジー株式会社 Power system
JP5254568B2 (en) 2007-05-16 2013-08-07 日立ビークルエナジー株式会社 Cell controller, battery module and power supply system
JP5481796B2 (en) * 2008-03-27 2014-04-23 株式会社デンソー Battery equipment module and battery pack having battery stack restraining means
KR101016596B1 (en) * 2009-01-29 2011-02-22 강정욱 Cell cartridge
KR101065926B1 (en) 2009-07-09 2011-09-19 삼성에스디아이 주식회사 Secondary battery
KR20120052189A (en) * 2009-07-17 2012-05-23 파나소닉 주식회사 Battery connecting member and battery module using same
CN102299390B (en) * 2010-06-23 2013-12-11 电能有限公司 Safety power supply device of set battery
JP5720544B2 (en) * 2011-11-23 2015-05-20 株式会社デンソー Battery unit
US10062934B2 (en) * 2013-07-25 2018-08-28 Johnson Controls Technology Company Cooling system and method for lithium-ion battery module
JP6249991B2 (en) 2015-06-10 2017-12-20 矢崎総業株式会社 Wiring module
CN106207028A (en) * 2016-07-13 2016-12-07 苏州新逸喆电子科技有限公司 A kind of set of cells of high current charge-discharge
JP6524051B2 (en) * 2016-12-09 2019-06-05 矢崎総業株式会社 Conductor connection structure and conductive module
JP6581958B2 (en) * 2016-12-09 2019-09-25 矢崎総業株式会社 Voltage detection structure and voltage detection module

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014134142A2 (en) 2013-02-27 2014-09-04 Ioxus, Inc. Energy storage device assembly
EP2962343A4 (en) * 2013-02-27 2016-11-09 Ioxus Inc Energy storage device assembly
US9899643B2 (en) 2013-02-27 2018-02-20 Ioxus, Inc. Energy storage device assembly
US9892868B2 (en) 2013-06-21 2018-02-13 Ioxus, Inc. Energy storage device assembly

Also Published As

Publication number Publication date
CN1893171A (en) 2007-01-10
JPH10270006A (en) 1998-10-09
CN100492754C (en) 2009-05-27

Similar Documents

Publication Publication Date Title
CN104981937B (en) For battery pack of the liquid refrigerant leakage with improved safety
JP6117308B2 (en) Secondary battery device
EP2339663B1 (en) Power source apparatus
KR100937897B1 (en) Middle or large-sized battery pack of novel air cooling structure
US8617735B2 (en) Battery module having improved cooling efficiency
US7955729B2 (en) Vibration resistant secondary battery module
JP4242665B2 (en) Battery pack cooling device and secondary battery
US7297438B2 (en) Cooling device for battery pack
JP4727668B2 (en) Cooling device for battery pack
JP5496522B2 (en) Battery system
CN1202589C (en) Header for hattery power device and cooling means of battery power
US9941554B2 (en) Battery module having a cell tray with thermal management features
EP1705743B1 (en) Battery module
JP5639835B2 (en) Battery pack and electric vehicle equipped with the same
US8507121B2 (en) Battery temperature unevenness suppressing power supply
EP0771037B1 (en) Storage battery with ventilation and cooling system
TW508852B (en) Power supply device
TWI317183B (en) Housing member for battery module
US7766544B2 (en) Temperature sensor mounting structure and battery module structure
KR100612305B1 (en) Secondary battery module
TW522588B (en) Power supply apparatus
KR100637472B1 (en) Secondary battery module
KR100839374B1 (en) Battery module
KR100413293B1 (en) Battery cooling structure
JP5023509B2 (en) Power supply

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040323

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050728

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060131

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060213

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100303

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110303

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120303

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120303

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130303

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130303

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140303

Year of fee payment: 8

EXPY Cancellation because of completion of term