CN103840104A - Battery box and battery pack using same - Google Patents
Battery box and battery pack using same Download PDFInfo
- Publication number
- CN103840104A CN103840104A CN201410071696.7A CN201410071696A CN103840104A CN 103840104 A CN103840104 A CN 103840104A CN 201410071696 A CN201410071696 A CN 201410071696A CN 103840104 A CN103840104 A CN 103840104A
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- CN
- China
- Prior art keywords
- detection
- casing
- battery case
- busbar
- battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a battery box and a battery pack using the same. A detection line is arranged in a box body and comprises two conductive buses which are arranged at the junctions between one side wall of the box body as well as the opposite side wall thereof or two opposite side walls and the bottom surface, each conductive bus extends corresponding to the length or width direction of the box body and is provided with a detection terminal which is connected with a detection power supply; each conductive bus is connected with a group of conductive branch wires which extends towards the bottom surface of the box body and are arranged at intervals, and the two groups of conductive branch wires are distributed alternatively at intervals. A detection circuit is arranged in the box body, the positive and negative conductive branch lines of the detection circuit are distributed on the bottom surface and the side walls of the box body alternatively at intervals in a meshy manner, thus covering the whole detection area, solving the defects that the existing insulating detection circuit is poor in independence, has dead zones, and is small in detection range and incapable of discovering hidden local early-stage insulating failure hazard, and the like, thus realizing the full-range insulating detection of the box body.
Description
Technical field
The invention belongs to electrokinetic cell field, be specifically related to a kind of Battery case and use the battery pack of this battery case.
Background technology
Along with the day by day exhaustion of fossil energy and the raising day by day of environmental requirement, the new-energy automobiles such as growing, electronic/mixed moving big bus of electric automobile and Development of HEV Technology demand and private car are nowadays no longer strange.As the core component in new-energy automobile field, battery technology is directly to concern the key technology whether above-mentioned new-energy automobile can be applied.
Wherein the security performance of battery system is most important, has occurred a lot of electric automobile security incidents both at home and abroad, has caused serious consequence.The above-mentioned security incident of analysis and summary, the short circuit wherein causing because of Battery case failure of insulation is one of them main factor.Battery case failure of insulation causes short-circuit fire, and indivedual extreme cases are that inside battery electrolyte leakage causes short circuit, causes electrolyte burning.
In addition, electric automobile is affected by environment in running, easily enters conducting liquid and dust and cause battery system insulation to reduce in Battery case.Cause that local location self-discharge of battery rate increases, battery long-term work will cause battery system consistency variation in this environment, the actual active volume of the system that affects.
For above-mentioned failure of insulation problem, carry out in the industry research in this respect.Mainly, by the detection of insulating of auxiliary battery management system, its general principle is the voltage difference of positive and negative end and the test point of control cell system.Chinese Patent Application No. 201120437971.4 discloses the test circuit of lithium battery and battery case insulating properties in a kind of electric automobile, and the voltage at the virtual resistance two ends by measuring battery plus-negative plate and Battery case composition calculates insulation resistance between lithium battery and Battery case.There is following drawback through practical application in this test mode: the insulation of auxiliary battery management system detects independent poor performance, exists larger detection dead band, detection range limited, can not find local failure of insulation hidden danger in early stage.
Summary of the invention
The object of this invention is to provide a kind of battery case, to solve the problem that test circuit independence is poor, detection range is limited of existing detection battery case insulating properties, provide a kind of battery pack that uses this battery case simultaneously.
In order to realize above object, the technical scheme that battery case of the present invention adopts is: a kind of battery case, comprise casing, in described casing, be provided with detection line, two busbars that described detection line comprises respectively on sidewall of casing and sidewall corresponding thereto or the junction of two opposite side walls and bottom surface arranges, every busbar all corresponding along casing length or Width extends and every bus on be equipped with one for the detection terminal that detects power supply and be connected; On each busbar, be all connected with one group and extend and spaced conductive branch towards tank floor direction, alternately lay at two groups of conductive branch intervals.
Every group of conductive branch at least extends to sidewall and the junction, bottom surface and non-intersect with another busbar that the busbar corresponding with it is relative.
In one of them of two detection terminals corresponding with two busbars, be connected with detection indicating device.
Described detection indicating device is light-emitting diode.
Between two detection terminals, be connected with detection power supply.
The technical scheme that battery pack of the present invention adopts is: a kind of battery pack, comprise battery case and be installed on the battery module in casing, described battery case comprises casing, in described casing, be provided with detection line, two busbars that described detection line comprises respectively on sidewall of casing and sidewall corresponding thereto or the junction of two opposite side walls and bottom surface arranges, every busbar all corresponding along casing length or Width extends and every bus on be equipped with one for the detection terminal that detects power supply and be connected; On each busbar, be all connected with one group and extend and spaced conductive branch towards tank floor direction, alternately lay at two groups of conductive branch intervals.
Every group of conductive branch at least extends to sidewall and the junction, bottom surface and non-intersect with another busbar that the busbar corresponding with it is relative.
In one of them of two detection terminals corresponding with two busbars, be connected with detection indicating device.
Described detection indicating device is light-emitting diode.
Between two detection terminals, be connected with detection power supply.
Battery case of the present invention and use the battery pack of this battery case to lay testing circuit in casing, detection line just, negative pole conductive branch is on the bottom surface and sidewall that netted interval is alternately arranged in casing, cover whole surveyed area, and while detection, only need connect and detect power supply and detect indicating device, easy to use, solve existing insulation detecting circuit independence poor, dead band, detection range is little, can not find the drawbacks such as failure of insulation hidden danger in local early stage, realize the initiatively insulation detection of casing gamut, can understand in real time the insulation situation of casing, obviously improve the electrical insulation properties of Battery case.
Brief description of the drawings
Fig. 1 is the structure principle chart of battery case of the present invention;
Fig. 2 is the structure principle chart of the another kind of embodiment of battery case of the present invention;
Fig. 3 is the detection schematic diagram of battery case testing circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be illustrated in figure 1 the structure principle chart of battery case of the present invention, as seen from the figure, this battery case comprises casing, in casing, be provided with detection line, detection line comprises respectively in two busbar 7(figure that arrange on sidewall of casing and sidewall corresponding thereto and only shows wherein one, another root is not shown), every busbar is all corresponding to being equipped with a detection terminal (not shown) for being connected with detection power supply on casing length or Width extension and every bus; On each busbar, being all connected with one group extends and the alternately laying of 6 and 8, two groups of conductive branch intervals of spaced conductive branch towards tank floor direction.
Because Battery case failure of insulation generally appears on the bottom surface of casing, therefore, in order to realize complete detection, every group of conductive branch of the present embodiment at least extends to sidewall and the junction, bottom surface and non-intersect with another busbar that the busbar corresponding with it is relative.Certainly, consider fortuitous event, need to also detect wall box, also the position of busbar can be arranged near the top of corresponding sidewall, and conductive branch continues to extend to the detection position that opposing sidewalls place needs as far as possible.Position and the Extendible Extent of busbar and conductive branch are determined by actual needs.
Two busbars shown in Fig. 1 are to be arranged at respectively on two relative sidewalls, certainly also have other execution mode.For example, as shown in Figure 2, two busbars 7 and 9 also can be arranged at the junction of two opposite side walls and bottom surface, also can realize the detection of tank floor, but because conductive branch can not be communicated with another relative busbar, therefore, this layout structure can cause near the part position of two opposite side walls and junction, bottom surface and be missed, therefore preferred structure as shown in Figure 1.
In addition, the mode preferably evenly arranging when alternately lay at two groups of conductive branch intervals, certainly, as long as non-homogeneous laying meets service condition.
For convenient in the time detecting, can in one of them of two detection terminals corresponding with two busbars, connect and detect indicating device, like this, only need prepare a detection power supply while detecting insulate.
Further, for the ease of detecting in real time the insulation situation of casing, can in the time of design casing, directly detection power supply be connected in testing circuit, be about to detect power supply and be connected between two detection terminals, ensure that testing circuit is available in real time.Like this, once failure of insulation appears in casing, the testing circuit instruction of can reporting to the police immediately, reminds user to note maintenance, avoids occurring security incident.Certainly, also can, by insulating signal by corresponding other circuit transmission supervisory control system afield, realize remote monitor.
The detection indicating device of the present embodiment is light-emitting diode, as other execution modes, also can adopt other audible-visual annunciator, for example similar indicator light or buzzer.
The present invention also provides a kind of battery pack, comprises battery case and is installed on the battery module in casing, and the structure of described battery case is described above.
In testing circuit in the present embodiment casing, after being connected with the both positive and negative polarity that detects power supply with two detection terminals, two busbars have respectively different polarity, and its positive and negative electrode conductive branch of drawing is netted alternate intervals and is distributed in battery case bottom and sidewall.The spacing distance of positive and negative electrode conductive branch can suitably be adjusted according to the actual requirements, and the adjustment of spacing distance will cause the variation of insulation detecting circuit sensitivity.For example, if desired heighten the sensitivity that insulation detects, need to reduce the spacing distance of positive and negative electrode conductive branch; If desired reduce the sensitivity that insulation detects, its spacing distance is carried out to contrary adjustment.
As shown in Figure 3, the present embodiment uses direct current 2VDC power supply as detecting power supply 3 to the detection principle of battery case testing circuit of the present invention, and DC2V supply voltage is starkly lower than safe voltage, will not exert an influence to personal security.Secondly, adopt low-voltage to there is safety assurance to the fuel gas that may exist in battery case or gas-liquid mixture, do not produce obvious electric spark and cause burning or blast.
Be parallel net distribution at battery case bottom and sidewall with the positive and negative electrode conductive branch 2 and 1 that detects power supply connection, positive and negative electrode conductive branch is parallel netted being alternately distributed, and forms open circuit.The conducting voltage of connecting in testing circuit is that the LED light-emitting diode 4 of 1.8V is opened a way as load formation, and light-emitting diode is series at the positive terminal that detects power supply, and its positive pole is connected with the positive pole that detects power supply, and its negative pole is connected with corresponding conductive branch.Light-emitting diode is as the indicating device of insulation detection device, in the time there is the conducting medium such as conducting liquid or dust in battery case, conducting medium is communicated with corresponding positive and negative electrode conductive branch, and circuit forms path, light-emitting diode is lighted, and indicates this battery case inside to have the situation of failure of insulation.For example, in battery case, exist conducting liquid and dust 5 can cause detection return path.
The light-emitting diode of the present embodiment is series at the positive terminal that detects power supply, as other execution modes, also can be serially connected with the negative pole end that detects power supply, now, the negative pole of Light-Emitting Diode need be connected with the negative pole end that detects power supply.
Above embodiment is only for helping to understand core concept of the present invention; can not limit the present invention with this; for those skilled in the art; every foundation thought of the present invention; the present invention is modified or is equal to replacement; any change of doing in specific embodiments and applications, within all should being included in protection scope of the present invention.
Claims (10)
1. a battery case, comprise casing, it is characterized in that: in described casing, be provided with detection line, two busbars that described detection line comprises respectively on sidewall of casing and sidewall corresponding thereto or the junction of two opposite side walls and bottom surface arranges, every busbar all corresponding along casing length or Width extends and every bus on be equipped with one for the detection terminal that detects power supply and be connected; On each busbar, be all connected with one group and extend and spaced conductive branch towards tank floor direction, alternately lay at two groups of conductive branch intervals.
2. battery case according to claim 1, is characterized in that: every group of conductive branch at least extends to sidewall and the junction, bottom surface and non-intersect with another busbar that the busbar corresponding with it is relative.
3. battery case according to claim 1, is characterized in that: in one of them of two detection terminals corresponding with two busbars, be connected with detection indicating device.
4. battery case according to claim 3, is characterized in that: described detection indicating device is light-emitting diode.
5. battery case according to claim 3, is characterized in that: between two detection terminals, be connected with detection power supply.
6. a battery pack, comprise battery case and be installed on the battery module in casing, described battery case comprises casing, it is characterized in that: in described casing, be provided with detection line, two busbars that described detection line comprises respectively on sidewall of casing and sidewall corresponding thereto or the junction of two opposite side walls and bottom surface arranges, every busbar all corresponding along casing length or Width extends and every bus on be equipped with one for the detection terminal that detects power supply and be connected; On each busbar, be all connected with one group and extend and spaced conductive branch towards tank floor direction, alternately lay at two groups of conductive branch intervals.
7. battery pack according to claim 6, is characterized in that: every group of conductive branch at least extends to sidewall and the junction, bottom surface and non-intersect with another busbar that the busbar corresponding with it is relative.
8. battery pack according to claim 6, is characterized in that: in one of them of two detection terminals corresponding with two busbars, be connected with detection indicating device.
9. battery pack according to claim 8, is characterized in that: described detection indicating device is light-emitting diode.
10. battery pack according to claim 8, is characterized in that: between two detection terminals, be connected with detection power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071696.7A CN103840104A (en) | 2014-02-28 | 2014-02-28 | Battery box and battery pack using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071696.7A CN103840104A (en) | 2014-02-28 | 2014-02-28 | Battery box and battery pack using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103840104A true CN103840104A (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410071696.7A Pending CN103840104A (en) | 2014-02-28 | 2014-02-28 | Battery box and battery pack using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103840104A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987795A (en) * | 2015-02-12 | 2016-10-05 | 比亚迪股份有限公司 | Water inflow detection device of battery box and detection method |
| CN108075194A (en) * | 2016-11-18 | 2018-05-25 | 大众汽车有限公司 | Battery unit |
| CN111613751A (en) * | 2020-06-15 | 2020-09-01 | 中国第一汽车股份有限公司 | Power battery assembly and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001222991A (en) * | 2000-02-07 | 2001-08-17 | Kenwood Corp | Secondary battery, method to identify battery, charging equipment and electric apparatus therewith |
| US6337559B1 (en) * | 1999-09-10 | 2002-01-08 | Sony Corporation | Battery pack with leakage detection and current interrupting means |
| JP2007273353A (en) * | 2006-03-31 | 2007-10-18 | Toyota Motor Corp | Battery structure |
| CN202631206U (en) * | 2012-05-25 | 2012-12-26 | 上海捷能汽车技术有限公司 | Liquid leakage detection device |
| CN203760537U (en) * | 2014-02-28 | 2014-08-06 | 中航锂电（洛阳）有限公司 | Battery box and battery pack utilizing same |
-
2014
- 2014-02-28 CN CN201410071696.7A patent/CN103840104A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6337559B1 (en) * | 1999-09-10 | 2002-01-08 | Sony Corporation | Battery pack with leakage detection and current interrupting means |
| JP2001222991A (en) * | 2000-02-07 | 2001-08-17 | Kenwood Corp | Secondary battery, method to identify battery, charging equipment and electric apparatus therewith |
| JP2007273353A (en) * | 2006-03-31 | 2007-10-18 | Toyota Motor Corp | Battery structure |
| CN202631206U (en) * | 2012-05-25 | 2012-12-26 | 上海捷能汽车技术有限公司 | Liquid leakage detection device |
| CN203760537U (en) * | 2014-02-28 | 2014-08-06 | 中航锂电（洛阳）有限公司 | Battery box and battery pack utilizing same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987795A (en) * | 2015-02-12 | 2016-10-05 | 比亚迪股份有限公司 | Water inflow detection device of battery box and detection method |
| CN105987795B (en) * | 2015-02-12 | 2019-04-19 | 比亚迪股份有限公司 | A kind of water inlet detecting device and its detection method of Battery case |
| CN108075194A (en) * | 2016-11-18 | 2018-05-25 | 大众汽车有限公司 | Battery unit |
| CN108075194B (en) * | 2016-11-18 | 2022-01-11 | 大众汽车有限公司 | Battery unit |
| CN111613751A (en) * | 2020-06-15 | 2020-09-01 | 中国第一汽车股份有限公司 | Power battery assembly and vehicle |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140604 |
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| RJ01 | Rejection of invention patent application after publication |