CN208111601U - Lithium battery and its battery case - Google Patents
Lithium battery and its battery case Download PDFInfo
- Publication number
- CN208111601U CN208111601U CN201820181557.3U CN201820181557U CN208111601U CN 208111601 U CN208111601 U CN 208111601U CN 201820181557 U CN201820181557 U CN 201820181557U CN 208111601 U CN208111601 U CN 208111601U
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- Prior art keywords
- shell
- battery
- inner casing
- battery case
- cover board
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to a kind of lithium battery and its battery case, battery case includes the inner casing being arranged concentrically and shell, two cover boards and two electrode assemblies.Inner casing is contained in shell, and two cover boards are connect with the edge seal of shell both ends open respectively, and with the opening at sealing shell both ends, and inner casing is held between two cover boards.The battery core of lithium battery is cyclic structure and is sheathed on inner casing, and when lithium battery work, the calorific value inside hollow battery core will be significant less.Moreover, the interior contact of inner casing and battery core, therefore may also function as conductive force.Therefore, the heat that generates can be also quickly conducted by inner casing on the cover board at both ends and further distributing when battery core works.On the one hand above-mentioned lithium battery can reduce the calorific value inside battery core, on the other hand can also accelerate the heat inside battery core and distribute.As it can be seen that the thermal diffusivity of above-mentioned lithium battery and its battery case is effectively improved.
Description
Technical field
The utility model relates to energy storage device technical field, in particular to a kind of lithium battery and its battery case.
Background technique
Lithium battery is very widely used in work and life, and lithium battery storage performance and discharge performance are preferable, by big
The welcome of most people.As the fields of new energy applications such as the fast development of lithium battery technology and electric car are to lithium battery
Requirement it is higher and higher, capacity, the power of lithium battery are also increasing.
And with battery capacity, the increase of power, calorific value of the lithium battery in working condition also increases.Heat is for example too late
When disperse, will lead to internal temperature of battery raising, and eventually lead to cell deformation, influence battery charging and discharging quality in addition cause it is quick-fried
It is fried.
However, common lithium battery is generally adopted by rectangular or circular solids structure, the thermal diffusivity of the structure is poor.And
After battery capacity increases, the volume of battery core is consequently increased.It is come out at this point, the heat inside battery core is then difficult to Quick diffusing.Cause
This, heat, which gradually accumulates, will lead to thermal runaway, then generate the safety accidents such as on fire from explosion, there are great security risks.
Utility model content
Based on this, it is necessary to for the problem that existing heat dissipation of lithium battery is poor, provide a kind of preferable lithium electricity of thermal diffusivity
Pond and its battery case.
A kind of battery case, including：
Shell, in the hollow columnar structures of both ends open；
Two cover boards are connect with the edge seal of the shell both ends open respectively, to seal opening for the shell both ends
Mouthful；
It is in the form of a column the inner casing of structure, be contained in the shell and is arranged concentrically with the shell, in the shell
Accommodating chamber is formed between inner wall and the outer wall of the inner casing, the inner casing is held between described two cover boards；And
Two electrode assemblies, the electrode assembly include electrode column and collector, and the collector accommodates and is fixed on institute
It states in shell, the electrode column is arranged in the cover board and is electrically connected with the collector.
Described two cover boards removably connect with the edge seal of the shell both ends open in one of the embodiments,
It connects.
It in one of the embodiments, further include sealing ring and threaded fastener, the edge of the cover board and the shell
The corresponding position in the end face of opening offers screw hole, the threaded fastener and the screwhole spiro bonding, and the sealing ring is pressed from both sides
It is held between the cover board and the end face of the shell aperture.
In one of the embodiments, further include explosion-proof valve, is offered at least one described cover board and the accommodating chamber
The liquid injection port of connection, the explosion-proof valve are removably installed in the edge of the liquid injection port and cover the liquid injection port.
Described two electrode assemblies are located at the both ends of the shell in one of the embodiments, and described two
The electrode column in electrode assembly is respectively arranged on described two cover boards.
The electrode column in each electrode assembly is two in one of the embodiments, and two electrodes
Column is arranged at intervals on the cover board.
One end that the electrode column is located in the shell in one of the embodiments, is provided with external screw thread, the collection
Fluid is provided with tool internal thread sleeve, and the electrode column is screwed togather with the sleeve.
One end that the electrode column is located on the outside of the cover board in one of the embodiments, is provided with external screw thread, is located at
One end on the inside of the cover board is provided with the limiting section of annular, offers mounting hole on the cover board, the electrode assembly also wraps
Fastening nut is included, the fastening nut is provided with described externally threaded one end with the electrode column and screws togather, so that the limiting section
It is supported with the inner wall of cover board.
The outer wall of the shell and inner casing set is arranged with insulation sleeve in one of the embodiments,.
A kind of lithium battery, including：
Battery case as described in any one of above preferred embodiment accommodates electrolyte in the accommodating chamber；And
The battery core of annular is contained in the shell and is sheathed on the shell, and the collector is electrically connected with the battery core
It connects.
Above-mentioned lithium battery and its battery case, battery core is cyclic structure and is sheathed on inner casing, and when lithium battery work, in
Calorific value inside empty battery core will be significant less.Moreover, the interior contact of inner casing and battery core, therefore may also function as conductive force.
Therefore, the heat that generates can be also quickly conducted by inner casing on the cover board at both ends and further distributing when battery core works.It is above-mentioned
On the one hand lithium battery can reduce the calorific value inside battery core, on the other hand can also accelerate the heat inside battery core and distribute.On as it can be seen that
The thermal diffusivity for stating lithium battery and its battery case is effectively improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of battery case in the utility model preferred embodiment；
Fig. 2 is the explosive view of battery case shown in Fig. 1；
Fig. 3 is the cross-sectional view of battery case shown in Fig. 1；
Fig. 4 is the structural schematic diagram of electrode column in battery case shown in Fig. 1.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes to the utility model
The understanding of disclosure is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
The utility model provides a kind of lithium battery and its battery case.Wherein, lithium battery include above-mentioned battery case and
It is contained in the intracorporal battery core of above-mentioned battery case.Battery core is formed by positive electrode, diaphragm and negative electrode material.Specifically, positive electrode
It can be manganese dioxide, lithium alloy metals oxide, negative electrode material can be lithium metal, graphite etc..
Fig. 1 and Fig. 2 is please referred to, the battery case 100 in the utility model preferred embodiment includes shell 110, cover board
120, inner casing 130 and electrode assembly 140.
Shell 110 is in the hollow columnar structures of both ends open.Specifically, its shape can be according to the required outside of lithium battery
Profile is adjusted, and can be the other shapes such as cylindrical, rectangular.Shell 110 is generally made of metal material.Moreover, in order to
Prevent short circuit, the outer wall of the shell 110 in the present embodiment is arranged with insulation sleeve (figure is not marked).
Cover board 120 is mainly used for the opening of sealing shell 110, and material can meet for metal, plastics or other intensity
It is required that material.Wherein, cover board 120 is two, and is connect respectively with the edge seal of 110 both ends open of shell, outer to seal
The opening at 110 both ends of shell.Cover board 120 can be connect with shell 110 by welding, can also pass through other removably modes
Realize connection.
In the present embodiment, two cover boards 120 are removably connect with the edge seal of 110 both ends open of shell.Specifically
, it can be realized by modes such as screw threads for fastening, engagings and removably be sealed.Therefore, shell 110 is repeatable opens or closes.When
After battery core or other elements damage in lithium battery, openable shell 110 is replaced, so that battery case 100 can be realized
Recycling.
Moreover, because without being welded in the seal process of shell 110, therefore can be conducive to save cost and improve lithium
The packaging efficiency of battery.
Further, in the present embodiment, battery case 100 further includes sealing ring 150 and threaded fastener 160.Cover board
The corresponding position in end face of 120 edge and shell 110 opening offers screw hole (not shown), threaded fastener 160 and screw hole
It screws togather, sealing ring 150 is held between the end face that cover board 120 and shell 110 are open.
The mode of screw threads for fastening can make cover board 120 be connected firmly with shell 110, and sealing ring 150 can realize it is effectively close
Envelope.Moreover, multiple screw holes and multiple threaded fasteners 160 are between the circumferential direction of cover board 120 in order to obtain better fixed effect
Every distribution.
Also referring to Fig. 3, inner casing 130 is in the form of a column structure.Specifically, the material and shape of inner casing 130 and shell 110 are equal
It is similar.But the radial dimension of inner casing 130 is less than shell 110, and inner casing 130 may be either hollow, can also be solid construction.And
And short circuit occurs in order to prevent, the outer wall of the inner casing 130 in the present embodiment is also arranged with insulation sleeve (figure is not marked).Wherein, inner casing
130 are contained in shell 110 and are arranged concentrically with shell 110, with the shape between the inner wall of shell 110 and the outer wall of inner casing 130
At accommodating chamber 101.Moreover, inner casing 130 is held between two cover boards 120.
In above-mentioned lithium battery, accommodating chamber 101 accommodates electrolyte.Moreover, battery core is annular in shape, and it is sheathed on inner casing 130
On.Due to the interior contact of inner casing 130 and battery core, therefore inner casing 130 may also function as conductive force.Therefore, it is generated when battery core works
Heat can quickly conduction therefore can improve hot inside battery core on the cover board 120 at both ends and further distributing by inner casing 130
The emission efficiency of amount.
Specifically in the present embodiment, inner casing 130 is hollow structure, and is offered respectively and inner casing 130 on two cover boards 120
The ventilation hole (not shown) of connection.The heat generated inside battery core can be conducted to inner casing 130 first.Further, both ends
Ventilation hole is conducive to form cross-ventilation in hollow inner casing 130, to rapidly take away heat.Therefore, battery case
100 heat dissipation performance is further promoted.
In the present embodiment, battery case 100 further includes explosion-proof valve 170, offers and accommodates at least one cover board 120
The liquid injection port 121 that chamber 101 is connected to.Explosion-proof valve 170 is removably installed in the edge of liquid injection port 121 and covers liquid injection port 121.
Specifically, explosion-proof valve 170 can be installed on the edge of liquid injection port 121 by way of screw threads for fastening.Wherein, explosion-proof valve
Explosion rupture disk (not shown) on 170 is installed on by welding on explosion-proof valve 170.When 101 electrolyte inside temperature of accommodating chamber
It is excessively high, when pressure is excessive, explosion rupture disk can be rushed to open, to play the role of pressure release, to prevent lithium battery from exploding.In addition, will prevent
Quick-fried valve 170 can be such that liquid injection port 121 is exposed after dismantling, and by liquid injection port 121 can to the benefit electrolyte in accommodating chamber 101 into
Row supplement.
Electrode assembly 140 is two, is respectively used to the anode and cathode as lithium battery.Wherein, two electrode assemblies 140
Both it may be disposed at the same end of lithium battery, the both ends of lithium battery can also be respectively arranged at.Electrode assembly 140 includes electrode column 141
And collector 143.Collector 143 is accommodated and is fixed in shell 110, and electrode column 141 is arranged in cover board 120 and and collector
143 electrical connections.
Specifically, 141 a part of electrode column is located at the outside of shell 110, for making lithium battery and electrical appliance or other electricity
Source carries out energy exchange.Moreover, by sealing and insulation processing between electrode column 141 and cover board 120.
In the present embodiment, one end that electrode column 141 is located in shell 110 is provided with external screw thread, and collector 143 is arranged
There is tool internal thread sleeve 1432.Electrode column 141 is screwed togather with sleeve 1432, so that electrode column 141 and collector 143 realize electricity
Connection.
Therefore, without being connect so as to avoid the occurrence of rosin joint and reduce by welding between electrode column 141 and collector 143
Electric shock resistance, can improve the water conservancy diversion efficiency of lithium battery interior to a certain extent.
In above-mentioned lithium battery, collector 143 is electrically connected with battery core, for collecting electric current.Specifically, as anode
Electrode assembly 140 in collector 143 be electrically connected with the positive electrode in battery core；And the electrode assembly as battery cathode
Collector 143 in 140 is then electrically connected with the negative electrode material in battery core.Moreover, in order to increase the contact area with battery core, this reality
It applies the collector 143 in example and carries out laser welding with battery core by the way of full tab.
In the present embodiment, two electrode assemblies 140 are located at the both ends of shell 110, and in two electrode assemblies 140
Electrode column 141 be respectively arranged on two cover boards 120.
That is, the positive and negative electrode of lithium battery is drawn from both ends respectively.On the one hand, the corresponding collector 143 of positive and negative anodes can
The both ends of shell 110 are respectively arranged at, to be conducive to 110 inner current collector body 143 of shell layout.On the other hand, battery is being just
Cathode is located at both ends, can facilitate the use of lithium battery.
In the present embodiment, the electrode column 141 in each electrode assembly 140 is two, and two electrode columns 141 are spaced
It is set on cover board 120.
Specifically, output electric current when work can also be promoted when the battery capacity of lithium battery is promoted.Therefore, pass through
Two electrode columns 141 are set, area of passage can be effectively increased, to can guarantee the safety in test and use process.In addition,
One can be arbitrarily chosen in two electrode columns 141 for power output.Therefore, when being used to lithium battery group dressing up battery pack,
Convenient for packing and lead.
Referring to Figure 4 together, in the present embodiment, one end that electrode column 141 is located at 120 outside of cover board is provided with outer spiral shell
Line, the limiting section 1412 of annular is provided with positioned at one end of 120 inside of cover board, and it is (not shown to offer mounting hole on cover board 120.
Electrode assembly 140 further includes fastening nut 145, and one end that fastening nut 145 is located at 120 outside of cover board with electrode column 141 screws togather,
So that limiting section 1412 and the inner wall of cover board 120 support.
Specifically, the outside and inside of cover board 120 refer respectively to cover board 120 backwards to accommodating chamber 101 and towards accommodating chamber
101 side.Wherein, electrode column 141 clamps with cover board 120 by limiting section 1412 and the cooperation of fastening nut 145 and realizes installation.
Therefore, electrode column 141 is also detachable, convenient for the assembling of lithium battery and the recycling of battery case 100.
Above-mentioned lithium battery and its battery case 100, battery core is cyclic structure and is sheathed on inner casing 130, and lithium battery work
When making, the calorific value inside hollow battery core will be significant less.Moreover, the interior contact of inner casing 130 and battery core, therefore may also function as
Conductive force.Therefore, when battery core works the heat that generates can also by inner casing 130 quickly conduction to the cover board 120 at both ends simultaneously
Further distribute.On the one hand above-mentioned lithium battery can reduce the calorific value inside battery core, on the other hand can also pass through the inner casing of setting
Heat inside 130 quickening battery cores distributes.As it can be seen that the thermal diffusivity of above-mentioned lithium battery and its battery case 100 is effectively changed
It is kind.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of battery case, which is characterized in that including：
Shell, in the hollow columnar structures of both ends open；
Two cover boards are connect with the edge seal of the shell both ends open respectively, to seal the opening at the shell both ends；
It is in the form of a column the inner casing of structure, be contained in the shell and is arranged concentrically with the shell, in the inner wall of the shell
Accommodating chamber is formed between the outer wall of the inner casing, the inner casing is held between described two cover boards；And
Two electrode assemblies, the electrode assembly include electrode column and collector, and the collector is accommodated and is fixed on described outer
In shell, the electrode column is arranged in the cover board and is electrically connected with the collector.
2. battery case according to claim 1, which is characterized in that described two cover boards removably with the shell two
The edge seal of end opening connects.
3. battery case according to claim 2, which is characterized in that further include sealing ring and threaded fastener, the lid
The corresponding position in the edge of plate and the end face of the shell aperture offers screw hole, the threaded fastener and the screw hole spiral shell
It closes, the sealing ring is held between the cover board and the end face of the shell aperture.
4. battery case according to claim 1, which is characterized in that further include explosion-proof valve, at least one described cover board
The liquid injection port being connected to the accommodating chamber is offered, the explosion-proof valve is removably installed in the edge of the liquid injection port and covering
The liquid injection port.
5. battery case according to claim 1, which is characterized in that described two electrode assemblies are located at the shell
Both ends, and the electrode column in described two electrode assemblies is respectively arranged on described two cover boards.
6. battery case according to claim 5, which is characterized in that the electrode column in each electrode assembly is two
It is a, and two electrode columns are arranged at intervals on the cover board.
7. battery case according to claim 1, which is characterized in that one end that the electrode column is located in the shell is set
It is equipped with external screw thread, the collector is provided with tool internal thread sleeve, and the electrode column is screwed togather with the sleeve.
8. battery case according to claim 1, which is characterized in that the electrode column is located at one end on the outside of the cover board
It is provided with external screw thread, one end on the inside of the cover board is provided with the limiting section of annular, mounting hole is offered on the cover board,
The electrode assembly further includes fastening nut, and the fastening nut and the electrode column are provided with externally threaded one end spiral shell
It closes, so that the inner wall of the limiting section and cover board supports.
9. battery case according to claim 1, which is characterized in that the outer wall of the shell and inner casing set is arranged
There is insulation sleeve.
10. a kind of lithium battery, which is characterized in that including：
Such as the described in any item battery cases of the claims 1 to 9, electrolyte is accommodated in the accommodating chamber；And
The battery core of annular is contained in the shell and is sheathed on the shell, and the collector is electrically connected with the battery core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820181557.3U CN208111601U (en) | 2018-01-31 | 2018-01-31 | Lithium battery and its battery case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820181557.3U CN208111601U (en) | 2018-01-31 | 2018-01-31 | Lithium battery and its battery case |
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| Publication Number | Publication Date |
|---|---|
| CN208111601U true CN208111601U (en) | 2018-11-16 |
Family
ID=64129645
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820181557.3U Active CN208111601U (en) | 2018-01-31 | 2018-01-31 | Lithium battery and its battery case |
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| CN (1) | CN208111601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199091A (en) * | 2018-01-31 | 2018-06-22 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Lithium battery and its battery case |
| CN114050363A (en) * | 2021-11-17 | 2022-02-15 | 广东嘉尚新能源科技有限公司 | All-solid-state lithium battery |
-
2018
- 2018-01-31 CN CN201820181557.3U patent/CN208111601U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199091A (en) * | 2018-01-31 | 2018-06-22 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Lithium battery and its battery case |
| CN114050363A (en) * | 2021-11-17 | 2022-02-15 | 广东嘉尚新能源科技有限公司 | All-solid-state lithium battery |
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