CN100444430C - Flat batteries and battery pack using same - Google Patents

Flat batteries and battery pack using same Download PDF

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Publication number
CN100444430C
CN100444430C CNB2006100925489A CN200610092548A CN100444430C CN 100444430 C CN100444430 C CN 100444430C CN B2006100925489 A CNB2006100925489 A CN B2006100925489A CN 200610092548 A CN200610092548 A CN 200610092548A CN 100444430 C CN100444430 C CN 100444430C
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China
Prior art keywords
platypelloid type
voltage detection
type battery
battery
detection department
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Expired - Fee Related
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CNB2006100925489A
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CN1881650A (en
Inventor
高松俊文
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The invention is directed towards flat battery for use in a battery pack. The flat battery includes an electrode terminal that conducts to the exterior of the exterior member and connects to the battery elements within the interior region. Electrode terminals of the flat battery are formed using a connection section, and a voltage detection section that connects a voltage detection line to a control device that detects an output voltage. A notch established between the connection section and the voltage detection section mutually separates the connection section and the voltage detection section. Because of a difference in thickness between spacer sections between the connection sections and the voltage detection section, the connection section is movable in the lamination direction of the flat battery between the spacers, while the voltage detection section is fixed.

Description

Platypelloid type battery and adopt the battery pack of this platypelloid type battery
Technical field
The battery pack that the present invention relates to be suitable for the platypelloid type battery under the vibration environment and adopt this platypelloid type battery.
Background technology
In recent years, as various power supplys, the two-dimentional battery (following one-tenth platypelloid type battery) of platypelloid type that satisfies the requirement of lightweight and slimming receives publicity.The platypelloid type battery comprises cell device, electrode assemblie (title electrode terminal) and the battery outer package that is formed by laminate film.Cell device is made of multilayer electrode and electrolyte, and this multilayer electrode replaces a plurality of being laminated by positive plate with positive electrode active material layer and the negative plate with negative electrode active material layer via separating component.The battery outer package is pasted the outer peripheral edges of two laminate films and is formed, and cell device is taken in inside.Electrode assemblie (electrode terminal) is connected with cell device, draws the outside from battery outer package inside.
A plurality of platypelloid type battery stack like this by connections such as weldings, are applicable to (for example with reference to patent documentations 1) such as high electric motor car of exporting of needs and hybrid cars as battery pack between electrode terminal.
In such battery pack, usually, connect the voltage detecting line on the electrode terminal of each platypelloid type battery, detect voltage, control discharging and recharging of each platypelloid type battery according to testing result by control device.
Patent documentation 1: the spy opens the 2004-227921 communique
But, above-mentioned like this under the situation that connects the voltage detecting line on the electrode terminal of platypelloid type battery, under the environment of input such as the vibration of vehicle etc., the vibration input electrode terminal of voltage detecting line.At this, the stress that vibration causes concentrates on the part of electrode terminal, and the life-span of electrode terminal reduces, and the reliability of the electrical connection between the platypelloid type battery reduces.
Summary of the invention
The present invention is in view of the above problems and research and development, and its purpose is to provide a kind of and can prevents because the battery that reduces of the life-span of the electrode terminal that the vibration of voltage detecting line causes and the battery pack that comprises this battery.
(1) platypelloid type battery of the present invention has the tabular electrode terminal that the cell device that will produce electric power is sealed in inner outer package parts and is connected and guides into from described outer package components interior the outside with described cell device, with a plurality of described platypelloid type battery stack and will be on stacked direction the electrode terminal of adjacent platypelloid type battery be connected to each other and obtain battery pack, it is characterized in that, the electrode terminal of described platypelloid type battery has connecting portion and voltage detection department, described connecting portion is connected with other platypelloid type batteries, and described voltage detection department is connected via the voltage check device of voltage detecting line with the output voltage that detects above-mentioned platypelloid type battery, be provided with otch between the connecting portion of described electrode terminal and the voltage detection department, make voltage detection department and connecting portion be separated from each other.
(2) battery pack of the present invention forms by the platypelloid type battery in stacked a plurality of (1), the connecting portion of the electrode terminal of platypelloid type battery freely swings with respect to the stacked direction of above-mentioned platypelloid type battery, and voltage detection department is fixed with respect to the stacked direction of above-mentioned platypelloid type battery.
The invention effect
Because the electrode terminal separation is separated with voltage detection department by connecting portion in the platypelloid type battery of the present invention, so connect voltage check device via the voltage detecting line on the voltage detection department, thereby, also have vibration hardly to the connecting portion transmission from voltage detecting alignment voltage detection department inputted vibration.Therefore, can prevent because the life-span of the electrode terminal that the stress of the vibration of input voltage test section causes reduces.
Description of drawings
Fig. 1 is the stereogram of an example of the platypelloid type battery of expression first execution mode;
Fig. 2 is the profile along the 2-2 line of Fig. 1;
Fig. 3 is the stereogram of the state of stacked a plurality of platypelloid type batteries in expression first execution mode;
Fig. 4 is the stereogram that is illustrated in the battery pack of stacked a plurality of platypelloid type batteries in first execution mode;
Fig. 5 is the profile of seeing along the 5-5 line of Fig. 4;
Fig. 6 is the profile of seeing along the 6-6 line of Fig. 4;
Fig. 7 is the stereogram of other platypelloid type batteries of first execution mode;
Fig. 8 is the stereogram of an example of the platypelloid type battery of expression second execution mode;
Fig. 9 is the stereogram of the state of stacked a plurality of platypelloid type batteries in expression second execution mode;
Figure 10 is the stereogram of the battery pack of stacked a plurality of platypelloid type batteries in expression second execution mode;
Figure 11 is the profile of seeing along the 6-6 line of Figure 10.
Description of reference numerals
10 platypelloid type batteries
20 cell devices
22 collector bodies
24 positive electrode active material layers
26 separating components
28 negative electrode active material layers
30 outer package parts
32 lamination sheets
40a, 40b electrode terminal (electrode assemblie)
42 connecting portions (efferent)
44 voltage detection departments
50 battery pack
60 liners
70 multi-electrode type connectors
75 voltage detecting lines
80 control device
100 platypelloid type batteries
120 cell devices
130 outer package parts
140a, 140b electrode terminal (electrode assemblie)
141,143 connecting portions
142,144 voltage detection departments
150 battery pack
160 liners
165 liners
170 multi-electrode type connectors
175 voltage detecting lines
180 control device
Embodiment
Followingly be divided into " first execution mode " and " second execution mode " illustrates embodiments of the present invention with reference to accompanying drawing.
" first execution mode "
(platypelloid type battery)
Fig. 1 is the stereogram of an example of expression platypelloid type battery, and Fig. 2 is the profile along the 2-2 line of Fig. 1.In addition, for being illustrated more clearly in, the thickness of parts such as for example lamination sheets of representing among the figure and size exaggeration expression.
As shown in Figure 1, 2, platypelloid type battery 10 has the outer package parts 30 of the cell device 20 that produces electric power, sealed cell element 20, draws outside tabular electrode assemblie (electrode terminal) 40a, 40b from the inside of outer package parts 30.
Cell device 20 is for example shown in Figure 2, by stacked above one another have the positive electrode active material layer positive plate 24, separating component 26, have the negative electrode active material layer negative plate 28 and multilayer electrode and not shown electrolyte constitute, produce electric power.
Outer package parts 30 are wrapped in cell device 20 in it and protect.Outer package parts 30 are formed by two lamination sheets (chip part 32).Lamination sheets 32 has the three-decker of the two sides of aluminium lamination by the resin bed covering.At least one lamination sheets 32 is wrapped in space in it for being provided with cell device 20, is processed into the high shape in middle part.The outer peripheral edges of two lamination sheets 32 form the junction surface by joints such as thermal weldings.Thus, outer package parts 30 inner sealing cell devices 20.
Electrode assemblie 40a, 40b are connected with negative plate 28 with the positive plate 24 of cell device 20 respectively, are the electrode terminals of drawing electric power from cell device 20.
Electrode assemblie 40a for example is the tabular anode electrode terminal that is formed by aluminium, is connected with the positive plate 24 of cell device 20, and draws the outside between two lamination sheets at the junction surface of outer package parts 30.
In addition, electrode assemblie 40b for example is the tabular negative electrode terminal that is formed by copper, is connected with the negative plate 28 of the cell device 20 of outer package parts 30 inside, and draws the outside from 32,32 of two lamination sheets at the junction surface of outer package parts 30.Electrode assemblie 40b is separated into connecting portion 42 and voltage detection department 44 by the otch that extends along the derivation direction of this electrode assemblie 40b is set in the part that is drawn out to outer package parts 30 outsides.
Connecting portion 42 when a plurality of platypelloid type batteries 10 are electrically connected as battery pack as described later, is connected with the electrode assemblie 40a of other platypelloid type batteries 10.Voltage detection department 44 when battery pack is imbedded platypelloid type battery 10, is the voltage of detection platypelloid type battery 10, and shown in Figure 6 as described later, becomes the terminal that is connected with control device 80 (voltage check device) via voltage detecting line 75.
At this, electrode assemblie 40b, preferably, shown in dotted line in Fig. 1, d position from 32,32 of two lamination sheets of the bonding part that is positioned at lamination sheets 32 is provided with otch to the fore-end that exposes above-mentioned outer package parts 30 outsides, is separated with voltage detection department 44 by connecting portion 42.In other words, preferable separate becomes the ramification point of connecting portion 42 and voltage detection department 44 to be sandwiched in 32,32 of lamination sheets.
(battery pack)
Then, the situation of first execution mode that a plurality of above-mentioned platypelloid type batteries 10 are connected in series as battery pack 50 describes.
Fig. 3 is the stereogram of battery pack of first execution mode of the stacked a plurality of platypelloid type batteries 10 of expression.
As shown in Figure 3, platypelloid type battery 10 is prepared the platypelloid type battery 10 shown in Figure 1 and the platypelloid type battery 10 of minute surface symmetry, carries out alternately laminated.At this, electrode assemblie 40a and electrode assemblie 40b alternately arrange at stacked direction, and the connecting portion 42 that makes electrode assemblie 40a and electrode assemblie 40b is discharged row and decided the posture of platypelloid type battery 10 at the stacked direction of platypelloid type battery 10.Thus, the connecting portion 42 of electrode assemblie 40a and electrode assemblie 40b is when stacked direction is arranged in row, and voltage detection department 44 also is arranged in row at stacked direction.
Stacked electrode assemblie 40a and the connecting portion 42 of electrode assemblie 40b up and down is connected by welding etc.Wherein, electrode assemblie 40a that stacked direction is arranged and the connecting portion 42 (being called connecting portion 42 to place an order) of electrode assemblie 40b all are connected and short circuit, so in the electrode assemblie 40a of platypelloid type battery 10 and the connecting portion 42 one with the electrode assemblie 40a of other platypelloid type batteries 10 on the upper strata (stacked direction of platypelloid type battery is to be upside under the situation up and down) of this platypelloid type battery 10 and connecting portion 42 in other situations about being connected under, other of this platypelloid type battery 10 to be electrode assemblie 40a is connected with the platypelloid type battery on upper strata in the connecting portion 42 that with the electrode assemblie 40a of other platypelloid type batteries 10 of lower floor's (under the situation of the stacked direction of platypelloid type battery about being is downside) and connecting portion 42 in one be connected.That is, under the situation that the connecting portion 42 of the electrode assemblie 40a of certain platypelloid type battery 10 and other platypelloid type batteries 10 on its upper strata is connected, the connecting portion 42 of this platypelloid type battery 10 is connected with the electrode assemblie 40a of other platypelloid type batteries 10 of lower floor.In addition, electrode assemblie that on stacked direction, does not connect in the electrode assemblie 40a of adjacent platypelloid type battery and the connecting portion 42 and connecting portion 42 do not contact and between electrode assemblie that does not connect and connecting portion 42 plate-like washer 60 of configuration insulating properties.
Liner 60 as shown in Figure 3, with the thickness direction size at the stacked position of voltage detection department 44 than thick with the thickness direction size of the stacked part of connecting portion 42.
Among Fig. 3, be simplified illustration, the situation of stacked four the platypelloid type batteries 10 of example shown, the but in fact situation greater than four is more, for example stacked eight platypelloid type batteries 10 and form battery pack.Stacked eight platypelloid type batteries 10 and four liners 60, so more, then form the battery pack of execution mode shown in Figure 4.
Fig. 4 is that stereogram, Fig. 5 of the battery pack 50 of stacked a plurality of platypelloid type batteries 10 is to be the profile of seeing along the 6-6 line of Fig. 4 along profile, Fig. 6 that the 5-5 line of Fig. 4 is seen.
In Fig. 4~6, represent the state of the battery pack that stacked eight platypelloid type batteries 10 form.
Shown in Fig. 4~5, the connecting portion 42 of electrode assemblie 40a and electrode assemblie 40b is connected in the gap of 60 of liners.60 of liners are because gapped, thus connecting portion 42 relatively the battery stack direction fix, that is, freely swing.And as Fig. 4 and shown in Figure 6, voltage detection department 44 is clipped by liner 60, fixes with fixing spacing.Fixing voltage detection department 44 inserts multi-electrode type connector 70 as shown in Figure 6 easily, and this multi-electrode type connector 70 can once be connected the voltage detecting line 75 integrated bundles of bundle with each voltage detection department 44.The multi-electrode type connector 70 that inserts is connected with control device 80 as shown in Figure 6 via voltage detecting line 75, carries out the deterioration state of each platypelloid type battery 10 and the control that discharges and recharges according to the magnitude of voltage of detected platypelloid type battery 10 respectively.
Connect platypelloid type battery 10 as shown above, can form battery pack 50.
The platypelloid type battery 10 of present embodiment and the effect of battery pack 50 are as follows.
According to the platypelloid type battery 10 of present embodiment, the front end of electrode assemblie 40b is separated into connecting portion 42 and voltage detection department 44.Detect under the voltage condition of platypelloid type battery 10, control device 80 is connected with voltage detection department 44 via voltage detecting line 75.Therefore, platypelloid type battery 10 is applicable under the situation of vibration environments such as vehicle that the vibration of voltage detecting line 75 also can be passed on the connecting portion 42 hardly.As a result, can not cause connecting portion 42 disrumpent feelings, thereby can not cut off the output of platypelloid type battery 10 because of the stress of vibration.
In addition, from 32,32 folded position d of two lamination sheets of the connecting portion of outer package parts 30 front end to electrode assemblie 40b, by forming otch, electrode assemblie 40b difference becomes connecting portion 42 and voltage detection department 44.That is, the ramification point of connecting portion 42 and voltage detection department 44 is in the connecting portion of lamination sheets 32,32.Therefore, can improve the intensity of the ramification point periphery of electrode assemblie 40b, prevent that electrode assemblie 40b's is disrumpent feelings.
According to the battery pack 50 of present embodiment, with the together stacked liner 60 of electrode assemblie 40a, b, with the thickness direction size at the stacked position of voltage detection department 44 than thick with the stacked position thickness direction size of connecting portion 42.Therefore, connecting portion 42 freely swings on the stacked direction of platypelloid type battery 10 60 of liners.Therefore, connecting portion 42 is together fixed with respect to the stacked direction of platypelloid type battery 10 with voltage detection department 44, then for example under the situation of the different vibration of output and voltage detection department 44 and platypelloid type battery 10, the stress that the vibration difference of voltage detecting line 75 and platypelloid type battery 10 causes is concentrated in meeting on connecting portion 42 and voltage detection department 44, life-span is reduced, but,, can prevent that stress is concentrated so swing with platypelloid type battery one because connecting portion 42 is fixing.As a result, can prevent that at least the life-span of connecting portion 42 from reducing, prevent that the reliability of electrical connection between the platypelloid type battery 10 from reducing.
And because the fixed-site of voltage detection department 44, so insert the multi-electrode type connector easily.Under the loose situation in the position of voltage detection department 44, the position of the stacked direction of the platypelloid type battery of voltage detection department 44 becomes freedom, is difficult for inserting simply the multi-electrode type connector.
In addition, in the above-described embodiment, as shown in Figure 1, can form gap separate mesh electrode assembly 40b thereby otch is set at connecting portion 42 and 44 of voltage detection departments.But, be not limited to this.Fig. 7 is the stereogram of other platypelloid type batteries 10 of expression.As shown in Figure 7, also can on electrode assemblie 40b, form otch simply, and be separated into connecting portion 42 and voltage detection department 44.That is, otch can simply be an otch, perhaps, also can be thin slit, can suitably change.
" second execution mode "
(platypelloid type battery)
Fig. 8 is the stereogram of an example of expression platypelloid type battery, and the 2-2 profile of platypelloid type battery shown in Figure 8 is identical with profile shown in Figure 2, so its explanation is omitted.
As shown in Figure 8, platypelloid type battery 100 has the outer package parts 130 of the cell device 120 that produces electric power, sealed cell element 120, draws outside tabular electrode assemblie (electrode terminal) 140a, 140b from the relative both sides of outer package parts 130.
Electrode assemblie 140a for example is the tabular anode electrode terminal that is formed by aluminium, is connected with the positive plate 24 (with reference to Fig. 2) of cell device 120, and draws the outside between two lamination sheets at the junction surface of outer package parts 130.
In addition, electrode assemblie 140b for example is the tabular negative electrode terminal that is formed by copper, be connected with the negative plate 28 (with reference to Fig. 2) of the cell device 120 of outer package parts 130 inside, and draw the outside from 32,32 of two lamination sheets at the junction surface of outer package parts 30.
Electrode assemblie 140a and 140b are arranged on the otch of the derivation direction extension of each electrode assemblie 140a, 140b in the part that is drawn out to outer package parts 130 outsides, thus, electrode assemblie 140a is separated with voltage detection department 142 by connecting portion 141, and electrode assemblie 140b is separated with voltage detection department 144 by connecting portion 143 in addition.
Each voltage detection department 142,144 of electrode assemblie 140a and 140b uses as the voltage detection department of the voltage that is used to detect platypelloid type battery 100.
The connecting portion 143 of each platypelloid type battery, as described later, when a plurality of platypelloid type batteries 100 are electrically connected as battery pack, with the electrode assemblie 141 of other platypelloid type batteries 100.Connect by this, the whole platypelloid type battery 100 that constitutes battery pack is connected in series.Voltage detection department 144 uses as being used to detect pack into the terminal of voltage of platypelloid type battery 100 of battery pack, is connected with control device shown in Figure 11 180 described later (voltage check device) via voltage detecting line 175.
At this, electrode assemblie 140a, 140b, preferably, shown in dotted line in Fig. 8, d position from 32,32 of two lamination sheets of the bonding part that is positioned at the lamination sheets 32 shown in Fig. 2, to the fore-end that exposes above-mentioned outer package parts 130 outsides otch is set, separates with voltage detection department 142,144 by connecting portion 141,143.In other words, the ramification point of preferably being separated with voltage detection department 144 by connecting portion 141 and voltage detection department 142 and connecting portion 143 is sandwiched in 32,32 of lamination sheets.
(battery pack)
Then, the situation of second execution mode that a plurality of above-mentioned platypelloid type batteries 100 are connected in series as battery pack 150 describes.
Fig. 9 is the stereogram of battery pack of second execution mode of the stacked a plurality of platypelloid type batteries 100 of expression.
As shown in Figure 9, platypelloid type battery 100, platypelloid type battery 100 shown in Figure 8 platypelloid type battery 100 towards on alternately stacked, and make connecting portion 141 and connecting portion 143 same columns stacked, in addition, voltage detection department 142 and voltage detection department 144 same columns are stacked.Stackedly like this go down, then connecting portion is discharged row on the stacked direction of platypelloid type battery 100, and voltage detection department is also discharged row on stacked direction simultaneously.
Promptly, as shown in Figure 9, the connecting portion of arranging on stacked direction 141 all is connected with connecting portion 143, and cause short circuit between the platypelloid type battery 100, so the connecting portion 141 of platypelloid type battery 100 and the connecting portion 143 that is positioned at these platypelloid type battery 100 lower floors (stacked direction of platypelloid type battery is to be lower floor under the situation up and down) be by electrical connections such as weldings, the connecting portion 143 of platypelloid type battery 100 and be positioned at connecting portion 141 usefulness liners 160 electric insulations of the lower floor of this platypelloid type battery 100.
On the other hand, because the voltage detection department 142 of whole platypelloid type batteries 100 and voltage detection department 144 necessary electric insulations, so insulate with liner 160 and liner 165.Liner 160 thickness to the part of the thickness comparison connecting portion 141 of the part of voltage detection department 142 and voltage detection department 144 and connecting portion 143 as shown in Figure 9 is thick.In addition, the thickness of liner 165 is identical with thickness to the part of the voltage detection department 142 of liner 160 and voltage detection department 144.
Among Fig. 9, be simplified illustration, example the situation of stacked four platypelloid type batteries 100, but in fact mostly be for example stacked eight platypelloid type batteries 100 and form battery pack greater than four.If four liners 160 and four liners 165 go down on stacked eight platypelloid type batteries 100 and the avris, then form the battery pack of execution mode shown in Figure 10.
Figure 10 is that stereogram, Figure 11 of the battery pack 150 of the stacked a plurality of platypelloid type batteries 100 of expression is the profile of seeing along the 6-6 line of Figure 10.The profile that the 5-5 line of Figure 10 is seen, the 40a of Fig. 5 change 143,42 into and change 141,60 into and change 160 into, and be then identical with Fig. 5, and its figure omits.
Among Figure 10,11, represent the state of the battery pack that stacked eight platypelloid type batteries 100 form.
Can infer that from Fig. 5 connecting portion 141 is connected in the gap of 160 of liners with connecting portion 143.160 of liners are because gapped, so connecting portion 141 and 143 is the states that are connected by welding etc., but relative battery stack direction fixes, that is, freely swing.On the other hand, and shown in Figure 10 and 11, voltage detection department 142 and voltage detection department 144 are fixed with fixing spacing by liner 160 and liner 165 clampings.Fixing voltage detection department 142 and voltage detection department 144 as shown in figure 11, insertion can be tied voltage detecting line 175 and the multi-electrode type connector 170 that once is formed by connecting with each voltage detection department 142 and voltage detection department 144 easily.The multi-electrode type connector 170 that inserts is connected with control device 180 via voltage detecting line 175, carries out the deterioration state of each platypelloid type battery 100 and the control that discharges and recharges according to the magnitude of voltage of detected platypelloid type battery 100 respectively.
Utilize pliability on the industry
The present invention is applicable to the battery pack that adopts the platypelloid type battery.

Claims (5)

1. platypelloid type battery, it is characterized in that, this platypelloid type battery has the cell device that will produce electric power and is sealed in inner outer package parts and tabular electrode terminal, this plate-shaped electrode terminals is connected with described cell device and is drawn out to described outer package parts outside in described outer package components interior
The electrode terminal of described platypelloid type battery comprises the efferent and the voltage detection department that is connected with the voltage check device that detects output voltage via the voltage detecting line of output power,
By between the efferent of described electrode terminal and voltage detection department, otch being set, voltage detection department and efferent are separated from each other.
2. platypelloid type battery as claimed in claim 1 is characterized in that, described outer package parts are sealed in inside by the junction surface that the outer peripheral edges that form two sheet components engage with cell device,
And described electrode terminal is from guiding the outside between two sheet components at described junction surface,
Described otch from described electrode terminal along drawing the front end of direction, extending between two sheet components at described junction surface away from described junction surface.
3. a battery pack is characterized in that, this battery pack is connected to each other by the described platypelloid type battery of stacked a plurality of claims 1 and with the efferent of each platypelloid type battery and forms.
4. battery pack as claimed in claim 3 is characterized in that described efferent can freely swing on the stacked direction of described platypelloid type battery,
Described voltage detection department is fixing on the stacked direction of described platypelloid type battery.
5. battery pack as claimed in claim 4, it is characterized in that, the voltage detection department nationality of described a plurality of stacked platypelloid type battery by be folded between the voltage detection department, as the alternately laminated setting of the liner of tabular insulating element, thereby fixing on the stacked direction of described platypelloid type battery.
CNB2006100925489A 2005-06-16 2006-06-15 Flat batteries and battery pack using same Expired - Fee Related CN100444430C (en)

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CN102738421A (en) * 2011-03-31 2012-10-17 Nec能源元器件株式会社 Battery pack and electric bicycle
CN102738421B (en) * 2011-03-31 2014-10-29 Nec能源元器件株式会社 Battery pack and electric bicycle
US9287591B2 (en) 2011-03-31 2016-03-15 Nec Energy Devices, Ltd. Battery pack with protective circuit board and electric bicycle including the battery pack
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CN104145350A (en) * 2012-02-29 2014-11-12 日新制钢株式会社 Exterior material for laminated battery, method for manufacturing exterior material for laminated battery, method for manufacturing laminated battery and laminated battery
CN106133950A (en) * 2014-04-09 2016-11-16 日立汽车系统株式会社 Secondary cell

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