CN203760537U - Battery box and battery pack utilizing same - Google Patents
Battery box and battery pack utilizing same Download PDFInfo
- Publication number
- CN203760537U CN203760537U CN201420093485.9U CN201420093485U CN203760537U CN 203760537 U CN203760537 U CN 203760537U CN 201420093485 U CN201420093485 U CN 201420093485U CN 203760537 U CN203760537 U CN 203760537U
- Authority
- CN
- China
- Prior art keywords
- detection
- casing
- battery case
- busbar
- battery
- 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
Links
- 238000001514 detection method Methods 0.000 claims abstract description 67
- 238000009413 insulation Methods 0.000 abstract description 22
- 238000012360 testing method Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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 utility model discloses a battery box and a battery pack utilizing the same. A detection circuit is arranged in a box body and comprises two conducting buses which are respectively arranged on one side wall and an opposite side wall or on the junction between two opposite side walls and the bottom surface of the box body, each conducting bus correspondently extends in 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 conducting bus is connected with a conducting branch which extends in the direction towards the bottom surface of the box body and is arranged in a spacing manner, and the two conducting branches are alternately arranged at intervals. The detection circuit is arranged in the box body, the positive conducting branches and the negative conducting branches of the detection circuit are alternately distributed on the bottom surface and the side walls of the box body at intervals in a net shape to cover the entire detection area, so that the weaknesses that the existing insulation detection circuit is poor in independence, likely to have a dead zone and small in detection range, and the local preliminary insulation failure potential danger cannot be discovered, and the like can be solved, and the full-range active insulation detection of the box body can be realized.
Description
Technical field
The utility model belongs to electrokinetic cell field, is specifically related to a kind of Battery case and uses 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.
Utility model content
The purpose of this utility model 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, provides a kind of battery pack that uses this battery case simultaneously.
In order to realize above object, the technical scheme that the utility model battery case 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 the utility model battery pack 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 utility model 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 the utility model battery case;
Fig. 2 is the structure principle chart of the another kind of embodiment of the utility model battery case;
Fig. 3 is the detection schematic diagram of the utility model battery case testing circuit.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.
Be illustrated in figure 1 the structure principle chart of the utility model battery case, 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 utility model 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 the utility model battery case testing circuit, 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 the application's core concept; can not be as restriction; for those skilled in the art; every thought according to the application; it is modified or is equal to replacement; any change of doing in specific embodiments and applications, within all should being included in protection range of the present utility model.
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 |
|---|---|---|---|
| CN201420093485.9U CN203760537U (en) | 2014-02-28 | 2014-02-28 | Battery box and battery pack utilizing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093485.9U CN203760537U (en) | 2014-02-28 | 2014-02-28 | Battery box and battery pack utilizing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203760537U true CN203760537U (en) | 2014-08-06 |
Family
ID=51255776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420093485.9U Expired - Lifetime CN203760537U (en) | 2014-02-28 | 2014-02-28 | Battery box and battery pack utilizing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203760537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840104A (en) * | 2014-02-28 | 2014-06-04 | 中航锂电（洛阳）有限公司 | Battery box and battery pack using same |
-
2014
- 2014-02-28 CN CN201420093485.9U patent/CN203760537U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840104A (en) * | 2014-02-28 | 2014-06-04 | 中航锂电（洛阳）有限公司 | Battery box and battery pack using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |