JP3906706B2 - Battery module - Google Patents

Battery module Download PDF

Info

Publication number
JP3906706B2
JP3906706B2 JP2002038164A JP2002038164A JP3906706B2 JP 3906706 B2 JP3906706 B2 JP 3906706B2 JP 2002038164 A JP2002038164 A JP 2002038164A JP 2002038164 A JP2002038164 A JP 2002038164A JP 3906706 B2 JP3906706 B2 JP 3906706B2
Authority
JP
Japan
Prior art keywords
battery cell
bus bar
battery
row
adjacent
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 - Fee Related
Application number
JP2002038164A
Other languages
Japanese (ja)
Other versions
JP2003242956A (en
Inventor
丈 清川
健 秋元
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2002038164A priority Critical patent/JP3906706B2/en
Publication of JP2003242956A publication Critical patent/JP2003242956A/en
Application granted granted Critical
Publication of JP3906706B2 publication Critical patent/JP3906706B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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 or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery module that is mounted on, for example, an aircraft or space equipment and has a relatively large capacity and requires measures against generated EMI (Electromagnetic Interference).
[0002]
[Prior art]
FIG. 5 is an external view of a conventional battery module. 1A to 1J are cells, 2A to 2D, 3 and 4A to 4D are bus bars.
FIG. 6 is a diagram showing the arrangement of cells and the current path by the conventional battery module shown in FIG. 5, where 5A to 5J are positive terminals and 6A to 6J are negative terminals.
[0003]
In order to create a battery with a capacity that cannot be realized with one cell, a plurality of cells may be connected to form a single module.
One battery module connects the positive terminal 5A of the cell 1A and the negative terminal 6B of the cell 1B using the bus bar 2A, and connects the positive terminal 5B of the cell 1B and the negative terminal 6C of the cell 1C using the bus bar 2B. 1C plus terminal 5C and cell 1D minus terminal 6D are connected using bus bar 2C, cell 1D plus terminal 5D and cell 1E minus terminal 6E are connected using bus bar 2D, plus terminal 5E and minus terminal 6F. Are connected using bus bar 3, plus terminal 5F of cell 1F and minus terminal 6G of cell 1G are connected using bus bar 4A, and plus terminal 5G of cell 1G and minus terminal 6H of cell 1H are used using bus bar 4B. Connect the positive terminal 5H of the cell 1H to the negative terminal 6I of the cell 1I using the bus bar 4C, and connect the positive terminal 5I of the cell 1I to the cell 1J. By connecting the Inasu terminal 6J with busbar 4D, between the cells are connected.
[0004]
The connection between the cells is not limited to the bus bar, and may be connected by a cable or the like.
[0005]
In addition, as the capacity of the battery module increases, the number of cells required increases, and the length of cables, bus bars, and the like connecting the cells increases.
FIG. 7 is a diagram showing a current path in the conventional battery module shown in FIG. 6, and 7 is a current loop (linkage loop) formed at this time.
[0006]
[Problems to be solved by the invention]
In such a large-capacity battery module, EMI generated by a magnetic flux (hereinafter referred to as an interlinkage magnetic flux) generated along the interlinkage loop is increased due to the magnitude of the flowing current, and countermeasures are required. As a simple measure, there is a method to prevent the influence of EMI outside the module by isolating the battery module in a closed space with a shielding plate called a shield, but an increase in mass and an increase in the size of the module itself can be avoided. Absent. Especially in space equipment, the total mass and the size of the launch are very limited, making it difficult to take sufficient measures.
[0007]
At the same time, the larger the capacity of the battery module, the larger the amount of current flowing, so the amount of heat generated in the connection path increases, and a heat dissipation measure is required. As a simple countermeasure, it is possible to install a heat radiating fin. However, an increase in mass and an increase in the size of the module are unavoidable. At the same time, the risk of shorting the connection path is unavoidable, and countermeasures must be taken into account. .
[0008]
Further, as the number of cells constituting the battery module increases, the variation in assembly that occurs at the time of assembly increases, and the effect of the generated EMI or the like also varies. In order to reduce the assembling variation, the assembling conditions may be simply tightened, but there is a problem that productivity is lowered.
[0009]
The present invention has been made to solve the above-described problems, and an object of the present invention is to realize a battery module that does not require a special electric circuit or shield and can prevent an increase in mass and an increase in size.
[0010]
[Means for Solving the Problems]
The battery module of the present invention is a battery module formed by connecting a plurality of battery cells having a pair of electrode terminals of opposite polarity.
A battery cell row configured by arranging the battery cells in a row so that the polarities of the electrode terminals between the adjacent battery cells are staggered,
Between the different battery cells in the battery cell row, a planar bus bar with insulation that individually connects the electrode terminals with different polarities, and
The battery cells in the adjacent different battery cell rows are provided with other bus bars having a planar shape with insulation for interconnecting the electrode terminals having different polarities,
The bus bar connects the electrode terminal of the battery cell in the battery cell row to an electrode terminal of a different polarity in the next battery cell after skipping the adjacent battery cell, and other adjacent to the connection line between the electrode terminals. Connect the electrode terminals of each battery cell in order so that the connection line flows the current in the opposite direction,
The battery cell rows adjacent to each other are arranged in parallel so that the homopolar electrode terminals of the battery cells face each other,
The other bus bar includes a current path that flows from the adjacent one battery cell row to the other battery cell row via the bus bar and the other bus bar, and is folded back in the other battery cell row to return the bus bar and the other bus bar. The adjacent battery cell rows are connected to each other so that the direction of current flow is opposite to the other current path that returns to one battery cell row via the.
[0011]
The battery cell may be a lithium ion battery, a nickel metal hydride battery, or a nickel cadmium battery .
[0012]
It should be noted that the bus bar and other bus bars may have a structure shielded so as not to emit an electromagnetic field to the outside .
[0013]
Further, the number of the battery cells may be ten, the number of the battery cell rows may be two, and the bus bar and the other bus bars may be configured by seven types of plates that are insulated from each other in height and shape .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is an external view of a 100 Ah battery module showing Embodiment 1 according to the present invention, 8A, 8B, 9, 10, 11, 12A, 12B, 13 and 14 are bus bars, and 1A to 1J are diagrams of the prior art. This is the same as the description in FIG.
[0016]
One battery module is configured by connecting cells 1A to 1J using a bus bar 8A, a bus bar 8B, a bus bar 9, a bus bar 10, a bus bar 11, a bus bar 12A, a bus bar 12B, a bus bar 13 and a bus bar 14.
[0017]
FIG. 2 is a diagram showing cell arrangement and current paths according to the first embodiment. 1A to 1J are the same as those in FIG. 5, and 5A to 5J and 6A to 6J are the same as those in FIG.
[0018]
The arrangement of the cell 1 of the battery module is shown, and the terminals of the adjacent cells 1 are alternately arranged with the plus terminal 5 and the minus terminal 6, and the minus terminals of the plus terminal 5A of the cell 1A and the minus of the cell 1C are shown. The terminals 6C are connected by the bus bar 8a, the plus terminal 5C of the cell 1C and the minus terminal 6E of the cell 1E are connected by the bus bar 8b, and the plus bar 5D of the cell 1D and the minus terminal 6B of the cell 1B are connected by the bus bar 9. Is connected using the bus bar 10 between the positive terminal 5F of the cell 1F and the negative terminal 6D of the cell 1D, and is connected between the positive terminal 5E of the cell 1E and the negative terminal 6G of the cell 1G using the bus bar 11. Then, the positive terminal 5H of the cell 1H and the negative terminal 6F of the cell 1F are connected using the bus bar 12a, and the positive terminal 5J of the cell 1J and the negative terminal 6 of the cell 1H are connected. The bus bar 12b is used to connect the positive terminal 5G of the cell 1G to the negative terminal 6I of the cell 1I using the bus bar 13, and the positive bar 5I of the cell 1I and the negative terminal 6J of the cell 1J are connected to the bus bar 14 It is the arrangement to connect using.
[0019]
FIG. 3 is a diagram showing a current loop formed according to the first embodiment, and 15 shows a linkage loop formed.
Since the flow directions of the currents in the interlinkage loops 15A and 15B formed by the present embodiment are different from each other, an effect of canceling the generated interlinkage magnetic fluxes can be obtained.
[0020]
FIG. 4 is a diagram showing the direction of current flowing through the bus bar according to the first embodiment, and 8A, 8B, 9-11, 12A, 12B, 13, and 14 are the same as those in FIG.
[0021]
The bus bar 8A, the bus bar 8B, the bus bar 9 to the bus bar 11, the bus bar 12A, the bus bar 12B, the bus bar 13, and the bus bar 14 are configured by seven types having different heights and shapes so as to realize the current path shown in FIG. Each of them is insulated by applying a laminate.
The bus bars have a planar shape, and the bus bars are locally parallel plates.
[0022]
As a result, not only can the short circuit between the bus bars be prevented, but a local capacitor can be formed, so that an effect of reducing EMI can be obtained.
[0023]
At the same time, by adopting a planar shape, the surface area is increased, and the heat transfer area and the radiation area are increased, whereby high heat dissipation is obtained.
[0024]
At the same time, since the surface area is increased, the high frequency impedance is reduced by the skin effect, and voltage drop and heat generation by the connection path can be suppressed.
[0025]
In FIG. 4, the direction of the current flowing in the bus bar is shown, and it can be seen that there are portions where the directions of the flowing current are opposite to each other.
This has the effect of canceling out the magnetic fields generated along the current.
[0026]
Further, by using a material with a low degree of freedom such as a bus bar, it is possible to reduce the position variation due to the assembly, and the effect of reducing the change in the amount of EMI generated due to the position variation in the module can be obtained.
[0027]
At the same time, the efficiency of production can be increased by determining the position of the mounting screw at the time of connection.
[0028]
In the above embodiment, a lithium ion battery is used as the battery cell, but a nickel metal hydride battery or a nickel cadmium battery may be used.
[0029]
In the above embodiment, 10 cells and 7 types of bus bars are used, but the number and shape thereof are not limited to this.
[0030]
In the above embodiment, the bus bar is used, but this need not be the case when a parallel plate can be formed.
[0031]
In the above embodiment, the bus bar is laminated, but this is not necessarily limited as long as the insulating property can be maintained.
[0032]
Although the bus bar is used in the above-described embodiment, this is not necessary as long as the material has a low degree of freedom.
[0033]
At the same time, by devising the shape of the bus bar, the effect of efficiently radiating the connection path can be obtained.
[0034]
At the same time, by devising the shape of the bus bar, the effect of reducing the voltage drop and heat generation in the connection path can be obtained.
[0035]
At the same time, by laminating the bus bar, not only the effect of preventing the connection path from being short-circuited but also the effect of reducing the EMI by the capacitor effect can be obtained efficiently.
[0036]
By creating a portion in which the direction of the locally flowing current is opposite, an effect of canceling out the magnetic field generated along the flow can be obtained.
[0037]
【The invention's effect】
As described above, the battery module of the present invention can efficiently obtain the effect of reducing the EMI generated by the interlinkage magnetic flux by devising the cell arrangement and connection order in the connection between a plurality of cells. it can.
[Brief description of the drawings]
FIG. 1 is an external view of a battery module showing a first embodiment according to the present invention.
FIG. 2 is a diagram illustrating a cell arrangement and a current path according to the first embodiment.
FIG. 3 is a diagram showing a current loop formed by the first embodiment.
FIG. 4 is a diagram illustrating a direction of current flowing through a bus bar according to the first embodiment.
FIG. 5 is an external view of a conventional battery module.
FIG. 6 is a diagram showing a cell arrangement and a current path according to a conventional battery module.
FIG. 7 is a diagram showing a current loop formed by a conventional battery module.
1 cell, 2 bus bar, 3 bus bar, 4 bus bar, 5 plus terminal, 6 minus terminal, 7 current loop, 8 bus bar, 9 bus bar, 10 bus bar, 11 bus bar, 12 bus bar, 13 bus bar, 14 bus bar, 15 current loop

Claims (4)

  1. In a battery module formed by connecting a plurality of battery cells having a pair of electrode terminals of opposite polarity,
    A battery cell row configured by arranging the battery cells in a row so that the polarities of the electrode terminals between the adjacent battery cells are staggered,
    Between the different battery cells in the battery cell row, a planar bus bar with insulation that individually connects the electrode terminals with different polarities, and
    Between the adjacent battery cells in different battery cell rows, provided with a bus bar for inter-column connection in a planar shape provided with insulation to interconnect electrode terminals with different polarities,
    The battery cell rows adjacent to each other are arranged in parallel so that the homopolar electrode terminals of the battery cells face each other,
    The bus bar connects the electrode terminal of the battery cell in the battery cell row to an electrode terminal of a different polarity in the next battery cell after skipping the adjacent battery cell, and other adjacent to the connection line between the electrode terminals. Connect the electrode terminals of each battery cell in order so that the connection line flows the current in the opposite direction,
    By connecting the bus bar above,
    From one electrode of the battery cell at one column end in one adjacent battery cell column, through the battery cell at the other column end and one inter-connection bus bar, one column in the other adjacent battery cell column One interlaced loop formed by a current path that sequentially flows in adjacent battery cell rows to the end battery cell;
    One row in the one battery cell row is folded at one row end of the other battery cell row, passes through the battery cell at the other row end in the other battery cell row and the other inter-connection bus bar. With the other interlaced loop formed by other current paths that sequentially flow in adjacent battery cell rows until reaching the other electrode of the end battery cell,
    A battery module , wherein the adjacent battery cell rows are connected by the bus bar for connection between the one and the other rows intersecting each other so that the currents flowing through the chain loops are in opposite directions .
  2.   2. The battery module according to claim 1, wherein the battery cell comprises a lithium ion battery, a nickel metal hydride battery, or a nickel cadmium battery.
  3. 3. The battery module according to claim 1, wherein the bus bar and the inter-row connection bus bar are shielded so as not to emit an electromagnetic field to the outside alone.
  4. 2. The battery cell according to claim 1, wherein the number of the battery cells is 10, the number of the battery cell rows is two, and the bus bar and the inter-row connecting bus bar are composed of seven types of plates that are insulated from each other in height and shape. The battery module according to any one of claims 3 to 4.
JP2002038164A 2002-02-15 2002-02-15 Battery module Expired - Fee Related JP3906706B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002038164A JP3906706B2 (en) 2002-02-15 2002-02-15 Battery module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002038164A JP3906706B2 (en) 2002-02-15 2002-02-15 Battery module

Publications (2)

Publication Number Publication Date
JP2003242956A JP2003242956A (en) 2003-08-29
JP3906706B2 true JP3906706B2 (en) 2007-04-18

Family

ID=27779548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002038164A Expired - Fee Related JP3906706B2 (en) 2002-02-15 2002-02-15 Battery module

Country Status (1)

Country Link
JP (1) JP3906706B2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007250413A (en) * 2006-03-17 2007-09-27 Gs Yuasa Corporation:Kk Nonaqueous electrolyte solution secondary battery
CA2776912C (en) * 2009-10-07 2015-08-11 Research In Motion Limited Low noise battery
US8541117B2 (en) * 2009-11-11 2013-09-24 Blackberry Limited Low noise battery with a magnetic compensation structure for wireless mobile communication device
US9240610B2 (en) 2009-11-23 2016-01-19 Blackberry Limited Rechargeable battery with reduced magnetic leak
DE102010064303A1 (en) * 2010-12-29 2012-07-05 Robert Bosch Gmbh battery module
JP5578088B2 (en) * 2011-01-18 2014-08-27 日産自動車株式会社 assembled battery
JP5931756B2 (en) * 2011-02-08 2016-06-08 三洋電機株式会社 Pack battery
DE102012223589A1 (en) * 2012-12-18 2014-04-03 Robert Bosch Gmbh Electrical energy storage cell and electrical energy storage module
KR101428331B1 (en) * 2012-12-27 2014-08-07 현대자동차주식회사 Safety apparatus of battery module for vehicle
JP6152747B2 (en) 2013-08-21 2017-06-28 トヨタ自動車株式会社 Assembled battery
DE102014200304A1 (en) * 2014-01-10 2015-07-16 Robert Bosch Gmbh Battery pack with a plurality of electrochemical battery cells with a device for measuring a difference between two cell currents of two different battery cells
JP6363645B2 (en) * 2016-03-09 2018-07-25 株式会社東芝 Battery module, battery, storage battery, and electrical device
JP6635309B2 (en) * 2016-11-17 2020-01-22 トヨタ自動車株式会社 Battery pack

Also Published As

Publication number Publication date
JP2003242956A (en) 2003-08-29

Similar Documents

Publication Publication Date Title
JP6222975B2 (en) Battery pack
US10115954B2 (en) Battery module
JP6025319B2 (en) Battery module
US8455122B2 (en) Voltage sensing assembly for battery module and battery module employed with the same
US9640790B2 (en) Middle or large-sized battery module
EP2421070B1 (en) Battery pack
EP2388845B1 (en) Battery pack
JP5259599B2 (en) Battery module interface
US8349485B2 (en) High voltage modular battery with electrically-insulated cell module and interconnector peripheries
US8865337B2 (en) Modular battery, an interconnector for such batteries and methods related to modular batteries
US7393608B2 (en) Rechargeable battery and battery module using the same
US9490465B2 (en) Z-shaped bus bar for a battery pack
JP4127060B2 (en) Lithium ion batteries for vehicles
TWI317185B (en) Terminal-connecting means
CA2496092C (en) Battery pack
JP5367731B2 (en) Electrode terminal connection member for battery module
CN104854729B (en) Flexible circuit board in battery module as high voltage interconnection
EP1991880B1 (en) Voltage sensing member and battery module employed with the same
US9564663B2 (en) Battery module and battery assembly comprising the same
EP2654099B1 (en) Battery module and battery pack
US8125192B2 (en) Power switching module for battery module assembly
US20140234683A1 (en) Thermal Insulation of Battery Cells
US6806679B2 (en) Low internal impedance current pool for a charging/discharging device
US9318734B2 (en) Bimetal buss bar assembly
JP3826895B2 (en) Battery pack

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20040223

Free format text: JAPANESE INTERMEDIATE CODE: A621

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20040707

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050425

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050510

A521 Written amendment

Effective date: 20050708

Free format text: JAPANESE INTERMEDIATE CODE: A523

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050802

A521 Written amendment

Effective date: 20050929

Free format text: JAPANESE INTERMEDIATE CODE: A523

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

Effective date: 20061226

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070108

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

Year of fee payment: 3

Free format text: PAYMENT UNTIL: 20100126

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

Free format text: PAYMENT UNTIL: 20110126

Year of fee payment: 4

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

Year of fee payment: 5

Free format text: PAYMENT UNTIL: 20120126

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

Free format text: PAYMENT UNTIL: 20130126

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees