CN201845815U - Lithium battery pack protection device and lithium battery pack - Google Patents
Lithium battery pack protection device and lithium battery pack Download PDFInfo
- Publication number
- CN201845815U CN201845815U CN201020219494XU CN201020219494U CN201845815U CN 201845815 U CN201845815 U CN 201845815U CN 201020219494X U CN201020219494X U CN 201020219494XU CN 201020219494 U CN201020219494 U CN 201020219494U CN 201845815 U CN201845815 U CN 201845815U
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- Prior art keywords
- lithium battery
- protective device
- lower house
- shell
- upper shell
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- Expired - Fee Related
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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
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Abstract
The utility model discloses a lithium battery pack protection device and a lithium battery pack. The lithium battery pack protection device comprises a lower shell, an upper shell and a fastening piece, wherein the periphery of the upper end of the lower shell is provided with an extending edge which extends outwards, and the extending edge has a multi-step projection; the lower end of the upper shell is provided with the extending edge and a groove which are matched with the extending edge and the projection of the upper end of the lower shell; and the fastening piece connects the upper shell with the lower shell. After adopting the technical scheme, the water inlet path of the shell can be increased due to the mutually-matched extending edges of the upper and the lower shells, the contact area of the two extending edges is large, the fastening piece is used for increasing the pressure of the two extending edges to left a clearance seal therebetween, so water can be prevented from entering the shell. When rainwater enters the connection part of the upper and the lower shell, the projection and the groove which are mutually matched on the extending edges of the upper and the lower shells can effectively prevent the water from entering the shell. Compared with the prior art, the technical scheme solves the problem that the waterproof function loses efficacy because the tightness of the existing shell is bad after long-term vibration.
Description
Technical field
The utility model relates to the battery technology field, more particularly, and particularly lithium battery group protective device and lithium battery pack.
Background technology
Lithium battery is that a class is negative material, the battery that uses non-aqueous electrolytic solution by lithium metal or lithium alloy.Lithium battery is since succeeding in developing, because its operating voltage height, temperature limit is wide, self-discharge rate is low, have extended cycle life, pollution-free, special advantages such as security performance is good, has obtained application widely.Comprising a plurality of lithium batteries are formed the lithium battery group, be placed in the battery container, then it is installed in the electric motor car, as the power source of electric motor car.
Existing battery container is coated with the mode of encapsulant by after adopting the jointless mosaic of going up lower house in the junction, realize water-proof function.But battery container is through after shaking for a long time, and its sealing can be destroyed, the forfeiture water-proof function, and when electric motor car travelled in the rainy day, rainwater can enter housing, the phenomenon of the battery that is damaged.
The utility model content
For solving the problems of the technologies described above, the utility model provides a kind of lithium battery group protective device and lithium battery pack, with solve existing housing through long-time vibrations back casing sealing destroyed after, the problem of water-proof function forfeiture.
The utility model provides a kind of lithium battery group protective device, comprising:
Have the lower house of outward extending extension edge around the upper end, described Extendible flake has multistage scalariform projection;
The lower end has the extension edge that is complementary with described extension edge and described projection and the upper shell of groove;
The securing member that connects described upper shell and described lower house.
The utility model also provides a kind of lithium battery pack, comprising: the lithium battery group also comprises: protective device, and described protective device comprises: upper shell, lower house and be connected the securing member of described upper shell and lower house;
Described lower house has outward extending extension edge around the upper end, and described Extendible flake has multistage scalariform projection;
Described upper shell lower end has extension edge and the groove that is complementary with described extension edge and described projection;
Described lithium battery group is installed in the seal cavity of described upper shell and described lower house composition.
Use technique scheme, the extension edge that upper and lower casing has mutual coupling can increase the distance that water enters housing, and the contact-making surface of two extension edges is big, and the pressure that strengthens both by securing member makes and has clearance seal between the two, enters housing to prevent water.When the junction of upper and lower casing entered rainwater, the projection and the groove of coupling can prevent that effectively sealing enters in the housing mutually on the last lower house Extendible flake.Compared with prior art, the technical program solved existing housing through long-time vibrations back casing sealing destroyed after, the problem of water-proof function forfeiture.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing in the utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the lithium battery group protective device that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the decomposing schematic representation of protective device shown in Figure 1;
The another kind of structural representation of the lithium battery group protective device that Fig. 3 provides for the utility model embodiment;
Fig. 4 is the decomposing schematic representation of protective device shown in Figure 3;
Fig. 5 is the fundamental diagram of control relay in the protective device shown in Figure 3;
Fig. 6 is the enlarged drawing of A frame among Fig. 3.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills belong to protection range of the present utility model not making the every other embodiment that is obtained under the creative work prerequisite.
The lithium battery group protective device that the utility model embodiment provides can prevent that effectively sealing enters housing.Fig. 1 is the structural representation of protective device, and Fig. 2 is the decomposing schematic representation of Fig. 1, and this protective device comprises: upper shell 1, lower house 2 and securing member 3.Wherein:
Have outward extending extension edge around the upper end of lower house 2, have the projection of multistage scalariform on this Extendible flake, the length of this projection is successively decreased from bottom to top successively.The lower end of upper shell 1 has extension edge that extension edge and projection with lower house 1 be complementary and groove.The multistage scalariform projection and the groove of coupling can prevent that water enters housing when water enters the junction of lower house mutually on the extension edge.Be connected and fixed by securing member 3 between upper shell 1 and the lower house 2.
In order to ensure the sealing of last lower house junction, enter housing better to prevent sealing from the junction of last lower house, between last lower house, fill sealing ring 4, as shown in Figure 3.
Use technique scheme, the extension edge that upper shell 1 and lower house 2 have mutual coupling can increase the distance that water enters housing, and the contact-making surface of two extension edges is big, makes by securing member 3 both pressure of increasing to have clearance seal between the two, enters housing to prevent water.When the junction of upper shell 1 and lower house 2 entered rainwater, the projection and the groove of coupling can prevent that effectively sealing enters in the housing mutually on the last lower house Extendible flake.Compared with prior art, the technical program solved existing housing through long-time vibrations back casing sealing destroyed after, the problem of water-proof function forfeiture.
After water enters protective device; water also can penetrate into lithium battery interior simultaneously; cause the lithium battery electric leakage; therefore; for anti-sealing enters the problem that housing causes the lithium battery electric leakage; the protective device that the utility model embodiment provides also comprises: relay 5, level sensor 6 and controller 7, as shown in Figure 3 and Figure 4.Wherein:
Each relay 5 is connected between each lithium battery positive and negative electrode by lead.Level sensor 6 is installed on lower house 2 madial walls, and touch with lower house 2 bottom connections its bottom.Controller 7 is connected between relay 5 and the level sensor 6.The fundamental diagram of control relay as shown in Figure 5, its operation principle is: after water penetrates into enclosure interior, the water level that level sensor 6 detects enclosure interior surpasses preset water level, level sensor 6 sends the signal of disconnection relay to controller 7, after controller 7 receives signal, disconnect connected all relays 5 simultaneously, thereby cut off the circuit in all lithium batteries, prevent the lithium battery electric leakage, and then avoid the person is damaged.
In order well to place relay 5, lower house 2 internal fixation have median septum 8, have aperture on the median septum 8, make the connecting line between relay 5 and the lithium battery both positive and negative polarity can pass aperture, guarantee the enclosure interior line clear.Figure 6 shows that the enlarged drawing of A frame in the protective device shown in Figure 3, the annexation between the clear displaying upper shell 1 of this figure, lower house 2, sealing ring 4 and the median septum 8 makes things convenient for those skilled in the art to understanding of the present utility model.
Use technique scheme, can prevent effectively that sealing enters the problem of the lithium battery electric leakage that is caused behind the lower house 2, and then guarantee personal safety.
In order to prevent that housing from rocking, the protective device that the utility model embodiment provides also comprises: fixed support 9 and installation auricle 10.Fixed support 9 is used for fixing the lithium battery group, prevents that it from rocking in housing, and then prevents because the lithium battery group is rocked the housing that is caused and rocked.Installation auricle 10 is installed in the both sides of lower house 2, prevents that housing from rocking in electric motor car.
The securing member 3 that the utility model embodiment provides can be the bolt that nut and the described nut of rain are complementary, and also can be snap device.
The utility model embodiment also provides a kind of lithium battery pack, comprising: the lithium battery group also comprises: protective device, protective device comprises: upper shell, lower house and be connected upper shell and the securing member of lower house.Wherein:
Lower house has outward extending extension edge around the upper end, and this Extendible flake has multistage scalariform projection.The upper shell lower end has extension edge and the groove that is complementary with extension edge and projection.The lithium battery group is installed in the seal cavity of upper shell and lower house composition.
Use technique scheme, protective device can prevent that effectively sealing enters protective device, infringement lithium battery group.
Protective device also comprises: relay, level sensor and controller.Wherein: relay is connected between each lithium battery positive and negative electrode.Level sensor is installed in the lower house madial wall.Controller is connected between relay and the level sensor.
Use technique scheme; after entering water in the protective device; the water level that level sensor detects protective device inside surpasses preset water level; level sensor sends the signal of disconnection relay to controller; after controller receives signal, disconnect connected all relays simultaneously, thereby cut off the circuit in all lithium batteries; prevent the lithium battery electric leakage, and then avoid the person is damaged.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment is conspicuous to those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and the corresponding to wide region of features of novelty.
Claims (10)
1. a lithium battery group protective device is characterized in that, comprising:
Have the lower house of outward extending extension edge around the upper end, described Extendible flake has multistage scalariform projection;
The lower end has the extension edge that is complementary with described extension edge and described projection and the upper shell of groove;
The securing member that connects described upper shell and described lower house.
2. protective device according to claim 1 is characterized in that, also comprises:
Be filled in the sealing ring between described upper shell and the described lower house.
3. protective device according to claim 2 is characterized in that, also comprises:
Be connected the relay between each lithium battery positive and negative electrode;
Be installed in the level sensor of described lower house madial wall;
Be connected the controller between described relay and the described level sensor.
4. protective device according to claim 3 is characterized in that, also comprises:
Be fixed on the described lower house, and support the median septum of described relay.
5. according to any described protective device of claim 1-4, it is characterized in that, also comprise:
The fixed support of fixing described lithium battery group.
6. protective device according to claim 5 is characterized in that, also comprises:
Be installed in the installation auricle of described lower house both sides.
7. according to any described protective device of claim 1-4, it is characterized in that described securing member is nut and the bolt that is complementary with described nut.
8. according to any described protective device of claim 1-4, it is characterized in that described securing member is a snap device.
9. lithium battery pack comprises: the lithium battery group, it is characterized in that, and also comprise: protective device, described protective device comprises: upper shell, lower house and be connected the securing member of described upper shell and lower house;
Described lower house has outward extending extension edge around the upper end, and described Extendible flake has multistage scalariform projection;
Described upper shell lower end has extension edge and the groove that is complementary with described extension edge and described projection;
Described lithium battery group is installed in the seal cavity of described upper shell and described lower house composition.
10. lithium battery pack according to claim 9 is characterized in that, described protective device also comprises: relay, level sensor and controller;
Described relay is connected between each lithium battery positive and negative electrode;
Described level sensor is installed in described lower house madial wall;
Described controller is connected between described relay and the described level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020219494XU CN201845815U (en) | 2010-06-08 | 2010-06-08 | Lithium battery pack protection device and lithium battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020219494XU CN201845815U (en) | 2010-06-08 | 2010-06-08 | Lithium battery pack protection device and lithium battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201845815U true CN201845815U (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020219494XU Expired - Fee Related CN201845815U (en) | 2010-06-08 | 2010-06-08 | Lithium battery pack protection device and lithium battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201845815U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779514A (en) * | 2013-12-26 | 2014-05-07 | 国家电网公司 | Base plate type waterproof battery box |
| CN111211269A (en) * | 2020-03-09 | 2020-05-29 | 永康珀帐锂电池科技有限公司 | Lithium battery protection device |
-
2010
- 2010-06-08 CN CN201020219494XU patent/CN201845815U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779514A (en) * | 2013-12-26 | 2014-05-07 | 国家电网公司 | Base plate type waterproof battery box |
| CN103779514B (en) * | 2013-12-26 | 2016-06-01 | 国家电网公司 | Chassis type Waterproof battery case |
| CN111211269A (en) * | 2020-03-09 | 2020-05-29 | 永康珀帐锂电池科技有限公司 | Lithium battery protection device |
| CN111211269B (en) * | 2020-03-09 | 2020-08-21 | 永康珀帐锂电池科技有限公司 | Lithium battery protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20150608 |
|
| EXPY | Termination of patent right or utility model |