CN114865233A - High-capacity battery shell, high-capacity battery with shell and series battery pack - Google Patents
High-capacity battery shell, high-capacity battery with shell and series battery pack Download PDFInfo
- Publication number
- CN114865233A CN114865233A CN202210332848.9A CN202210332848A CN114865233A CN 114865233 A CN114865233 A CN 114865233A CN 202210332848 A CN202210332848 A CN 202210332848A CN 114865233 A CN114865233 A CN 114865233A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- conductor
- battery
- capacity battery
- deformable connecting
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/545—Terminals formed by the casing of the cells
-
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
-
- 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
- H01M50/271—Lids or covers for the racks or secondary casings
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to a high-capacity battery shell and a high-capacity and series-connection battery pack with the same, and the high-capacity battery shell is characterized by comprising the following components in parts by weight: the battery comprises a cover plate and a cylinder, wherein the cover plate comprises a first cover plate and a second cover plate which are respectively a positive electrode and a negative electrode of a battery, the cover plate and the cylinder enclose to form a battery shell, and the cover plate is connected with the cylinder in an insulating way; a deformable connecting part is arranged between the first cover plate and the second cover plate, and the deformable connecting part has conductivity; in the first state, the deformable connecting part keeps the original shape and is not simultaneously contacted with the first cover plate and the second cover plate; and in a second state, the deformable connecting part is deformed, and the first cover plate and the second cover plate are simultaneously contacted so as to enable the first cover plate and the second cover plate to be electrically connected. When the battery is out of control due to heat, the deformable connecting component deforms to enable the cover plate to be electrically connected with the cylinder, the battery shell is further made to be a conductor, the battery out of control due to heat is eliminated from the battery in series, and the problem that the whole battery pack in series cannot be used is avoided.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a high-capacity battery shell, a high-capacity battery with the shell and a series battery pack.
Background
The square battery of the maximum capacity of the lithium battery in the current market is 300Ah, the cylindrical battery of the maximum capacity is not more than 100Ah, the energy storage industry is expected to be developed greatly, but is influenced by the battery capacity, the lithium battery needs to be connected in series and in parallel with a plurality of batteries when the energy storage is applied, so that connecting spare and accessory parts are various, the connecting steps are complex and cumbersome, the using amount of a battery management system, a wire rod and a battery box is very large, and the energy storage cost is high.
Do big with battery capacity, can save many accessories such as BMS, connecting wire among the energy storage system, reduce energy storage system's cost, but large capacity battery quality is big, in case a certain battery thermal runaway opens circuit the back, entire system will be cut off the power supply, and the battery is changed the trouble and is difficult to in time handle, causes very big puzzlement to the application.
Disclosure of Invention
In order to solve the problem that the whole battery pack cannot be used due to inconvenient replacement after a certain battery of a high-capacity series battery pack is damaged, the invention adopts a solution scheme that a high-capacity battery shell, a high-capacity battery with the shell and a series battery pack are provided, and the high-capacity battery shell comprises:
a cover plate and a cylinder body,
the cover plate comprises a first cover plate and a second cover plate which are respectively an anode and a cathode of a battery, the cover plate and the cylinder body enclose to form a battery shell, and the cover plate is connected with the cylinder body in an insulating way;
a deformable connecting part is arranged between the first cover plate and the second cover plate, and the deformable connecting part has conductivity;
in the first state, the deformable connecting part keeps the original shape and is not simultaneously contacted with the first cover plate and the second cover plate;
and in a second state, the deformable connecting part is deformed, and the first cover plate and the second cover plate are simultaneously contacted so as to enable the first cover plate and the second cover plate to be electrically connected.
Preferably, the deformable connecting member includes: a first conductor, a second conductor,
the first conductor is arranged on one side of the first cover plate facing the cylinder,
the second conductor is arranged on one side of the second cover plate facing the cylinder,
one surface of the first conductor, which is far away from the first cover plate, is provided with a raised fixing part, and at least one side surface of the fixing part is provided with a deformable block;
one surface of the second conductor, which is far away from the second cover plate, is provided with a groove which is sleeved with the first conductor;
a gap is arranged at the overlapping part of the fixing part and the groove so as to insulate the first cover plate and the second cover plate;
the part of the first conductor, which is overlapped with the groove, is insulated and sealed;
and after the deformable connecting part is deformed, the gap is partially filled so that the first cover plate and the second cover plate are electrically connected.
Preferably, the first conductor and/or the second conductor is provided with a thermistor, when the temperature exceeds a threshold value when the shell is in the second state, the resistance of the thermistor is increased and cannot conduct electricity, so that the first conductor and/or the second conductor are electrically disconnected; when the temperature of the battery shell is lower than the threshold value, the resistance of the thermistor is reduced, the conduction is recovered, and the first conductor is electrically connected with the second conductor.
Another solution adopted by the present invention is to provide a high-capacity battery, which includes the above battery case.
In another solution, the present invention provides a series battery pack including the above-described large-capacity battery.
Preferably, the deformable attachment member is a fusible metal.
Preferably, the fusible metal has a melting point of not less than 150 ℃.
Preferably, a closed phase-change material cavity is further disposed outside/inside the first cover plate conductor and/or the second cover plate conductor to be filled with a phase-change material.
Preferably, the phase change temperature range of the phase change material is not lower than 60 ℃.
Preferably, the phase-change material is paraffin and a mixed phase-change material mainly containing paraffin.
Preferably, the gap width is not less than 0.5 mm.
The invention has the advantages that when the thermal runaway of the series battery pack occurs, the shell of the bad battery can be used as a conductor to communicate two adjacent batteries of the bad battery without dismounting the bad battery, the bad battery is automatically excluded from the series battery pack, the inconvenience brought by the replacement of the battery pack is avoided, and the invention is safe, efficient, economical and simple.
Drawings
FIG. 1 is a schematic view of a battery housing in one embodiment;
FIG. 2 is a schematic cross-sectional view of a battery case according to an embodiment;
FIG. 3 is a schematic cross-sectional view of a battery case according to an embodiment;
FIG. 4 is a schematic cross-sectional view of a battery case according to one embodiment;
FIG. 5 is a schematic cross-sectional view of a battery case according to an embodiment;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Hereinafter, embodiments of a battery pressure relief structure, a battery case having the same, and a battery according to the present invention will be specifically disclosed in detail with reference to the accompanying drawings as appropriate. But a detailed description thereof will be omitted. For example, detailed descriptions of already known matters and repetitive descriptions of actually the same configurations may be omitted. This is to avoid unnecessarily obscuring the following description, and to facilitate understanding by those skilled in the art. The drawings and the following description are provided to enable those skilled in the art to fully understand the present invention, and are not intended to limit the subject matter described in the claims.
All embodiments and alternative embodiments of the invention may be combined with each other to form new solutions, if not specifically stated. All technical and optional features of the invention may be combined with each other to form new solutions, if not otherwise specified.
The terms "comprising" and "including" as used herein mean open or closed unless otherwise specified. For example, "comprising" and "comprises" may mean that other components not listed may also be included or included, or that only listed components may be included or included.
It is to be understood that relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above summary of the present invention is not intended to describe each disclosed embodiment or every implementation of the present invention. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is merely a representative group and should not be construed as exhaustive.
Example 1
As shown in fig. 1, a large capacity battery casing includes a cover plate 1 and a cylinder 2, the cover plate 1 includes a first cover plate 11 and a second cover plate 12, in this embodiment, the first cover plate 11 is an upper cover plate, the second cover plate 12 is a lower cover plate, which are respectively a positive electrode and a negative electrode of a battery, the cover plate 1 and the cylinder 2 enclose to form a battery casing, because the cover plate 1 needs to have a conductive function as a post of the battery, the cover plate 1 and the cylinder 2 are not conductive after contacting, the cover plate 1 and the cylinder 2 are connected in an insulating manner in a normal state, and a deformable connecting member is disposed between the cover plate 1 and the cylinder 2, the deformable connecting member has a conductive property, and in the normal state, i.e. the first state, the deformable connecting member does not participate in the normal operation of the single battery, maintains the first form, and is connected only with the upper cover plate 11 (or the lower cover plate 12), and has a certain gap with the lower cover plate 12 (or the upper cover plate 11), so as to keep a certain distance and avoid short circuit of the battery caused by electric conduction; when the battery has an emergency such as thermal runaway, namely in the second state, the connecting part deforms due to high temperature, high pressure, chemical reaction and the like, the gap is filled, the upper cover plate 11 (or the lower cover plate 12) and the lower cover plate 12 (or the upper cover plate 11) are connected to serve as a lead, the bad battery is removed from the battery pack, the normal work of the whole series-connected large battery pack is maintained, and the whole large battery pack is prevented from being replaced and maintained due to the damage of a single battery.
The large-capacity battery shell shown in figure 1 is also provided with a reinforcing rib 3 and an explosion venting valve 4, wherein the reinforcing rib is used for reinforcing the compressive strength of the cylinder body 1, and the explosion venting valve 4 is used for discharging waste gas when the battery is out of control due to heat.
Example 2
As shown in fig. 2, the casing of the large capacity battery includes a cover plate, and the cover plate includes a first cover plate 11 and a second cover plate 12, in this embodiment, the first cover plate is an upper cover plate, the second cover plate is a lower cover plate 12, which are respectively a positive electrode and a negative electrode of the battery, and the cover plate 1 and the barrel enclose to form the battery casing.
As shown in fig. 2a, a deformable block 5 is disposed between the upper cover plate 11 and the cylinder 2, and the deformable block 5 has conductivity.
The upper cover plate 11 is provided with a conductor 13 facing the direction of the interior of the shell, the conductor 13 is provided with a fixing part 81, and the side surface of the fixing part 81 is provided with a deformable block 5; a conductor 14 is arranged in the direction of the lower cover plate 12 towards the inside of the shell, and a conductor 13 and a groove 82 sleeved with a fixing part 81 are arranged on one surface of the conductor 14 away from the lower cover plate 12; a gap is provided at the overlapping portion of the fixing portion 81 and the recess 82 to insulate the upper cover plate and the lower cover plate;
the part of the conductor 13 overlapped with the groove 82 is provided with an insulating gasket 9; in this embodiment, the deformable block 5 is made of fusible metal, and when the battery is in a normal operating state, the deformable block 5 does not participate in the operation of the battery, and when the battery is in a thermal runaway state, the battery can be changed in shape due to high temperature and high pressure, and can be separated from the fixing portion 81 side and leak, and fall into the gap between the fixing portion 81 and the groove 82, and the gap is partially filled, and enters the state shown in fig. 2b, so that the upper cover plate 11 and the lower cover plate 12 are electrically connected. In some cases, the fusible metal is provided on one side of the fixing portion 81, and may be provided on both sides, depending on the size of the gap between the fixing portion 81 and the conductive body 14. Normally, the gap is not less than 0.5mm, otherwise, the fusible metal is easy to slightly change, so that the upper cover plate and the lower cover plate of the battery are electrically connected, and the normal battery is damaged. The melting point of the fusible metal is not lower than 150 ℃, so that the fusible metal deforms before being used for hands, and normal batteries are damaged.
Example 3
As shown in fig. 2c and 2d, the case of the large capacity battery includes a cover plate, and the cover plate includes a first cover plate 11 and a second cover plate 12, in this embodiment, the first cover plate is an upper cover plate, the second cover plate is a lower cover plate 12, which are respectively a positive electrode and a negative electrode of the battery, and the cover plate 1 and the can enclose to form the battery case.
As shown in fig. 2c, a deformable block 5 is disposed between the upper cover plate 11 and the cylinder 2, and the deformable block 5 has conductivity.
A conductor 15 is arranged on the lower cover plate 12 in the direction towards the interior of the shell, a fixing part 81 is arranged on the conductor 15, and a deformable block 5 is arranged on the side surface of the fixing part 81; the upper cover plate 11 is provided with a conductor 16 towards the direction of the inner part of the shell, and one surface of the conductor 16 far away from the upper cover plate 11 is provided with a groove 82 which is sleeved with the conductor 15 and a fixing part 81; a gap is provided at the overlapping portion of the fixing portion 81 and the recess 82 to insulate the upper cover plate and the lower cover plate;
the part of the conductor 15 overlapped with the groove 82 is provided with an insulating sealing gasket 9; in this embodiment, the deformable block 5 is made of fusible metal, preferably fusible metal, and when the battery is in a normal operating state, the deformable block 5 does not participate in the operation of the battery, and when the battery is in a thermal runaway state, the battery can be changed in form due to high temperature and high pressure, and can be leaked from the fixing portion 81 side, and fall into the gap between the fixing portion 81 and the groove 82, and the gap is partially filled, and then the state shown in fig. 2d is entered, so that the upper cover plate 11 and the lower cover plate 12 are electrically connected. In some cases, the fusible metal is disposed on one side of the fixing portion 81, and may be disposed on both sides, depending on the size of the gap between the fixing portion 81 and the electrical conductor 16. Normally, the gap is not less than 0.5mm, otherwise, the fusible metal is easy to be slightly changed, so that the upper cover plate and the lower cover plate of the battery are electrically connected, and the normal battery is damaged. The melting point of the fusible metal is not lower than 150 ℃, so that the fusible metal deforms before being used for hands, and normal batteries are damaged.
An insulating layer is also arranged between the cover plate 1 and the cylinder body 2.
The large-capacity battery shell shown in figure 1 is also provided with a reinforcing rib 3 and an explosion venting valve 4, wherein the reinforcing rib is used for reinforcing the compressive strength of the cylinder body 1, and the explosion venting valve 4 is used for discharging waste gas when the battery is out of control due to heat. Fastening holes 7 are further formed between the upper cover plate 11 and the cylinder body 2 and between the lower cover plate 12 and the cylinder body 2 and used for installing insulating bolts. The fastening hole 7 penetrates the mounting portion and the receiver portion.
Example 4
As shown in fig. 3, the present embodiment is different from embodiment 1 or 2 in that a closed phase-change material cavity 100 is disposed outside the first conductor and/or the second conductor, and hermetically encloses a phase-change material, wherein the phase-change material is preferably paraffin or a mixed phase-change material mainly containing paraffin, and the phase-change temperature is not lower than 60 ℃. The sealed phase-change material can absorb the huge heat generated by the first cover plate and the second cover plate when in electric connection, so that the phenomenon that the cover plate is broken down due to overhigh local temperature and other batteries in the battery shell or even the battery pack are damaged is avoided.
Example 5
As shown in fig. 4, the present embodiment is different from embodiment 1 or 2 in that a sealed phase-change material cavity 100 is hermetically disposed in the first conductor and/or the second conductor, and encloses a phase-change material, which is preferably paraffin or a mixed phase-change material mainly containing paraffin, and the phase-change temperature is not lower than 60 ℃. The sealed phase-change material can absorb the huge heat generated by the first cover plate and the second cover plate when in electric connection, so that the phenomenon that the cover plate is broken down due to overhigh local temperature and other batteries in the battery shell or even the battery pack are damaged is avoided.
Example 6
As shown in fig. 5, this embodiment is different from embodiments 1 to 4 in that a Thermistor 200, preferably a Positive Temperature Coefficient Thermistor, i.e., a Positive Temperature Coefficient Thermistor (PTC), is spliced to the first and/or second electrical conductors, and the Thermistor automatically loses conductivity when the Temperature rises and gradually increases to completely conduct electricity normally when the Temperature falls. When the first cover plate and the second cover plate are electrically connected to generate huge heat, the thermistor loses conductivity under the influence of high temperature, so that the first conductor and/or the second conductor cannot conduct electricity, the first cover plate and the second cover plate are kept temporarily disconnected, and the phenomenon that the conductor is burnt out due to overhigh local temperature to damage a battery shell or even other batteries in the battery pack is avoided. When the temperature of the first conductor and/or the second conductor is gradually reduced, the thermistor gradually recovers the conductivity, so that the first conductor and/or the second conductor are electrically connected, the first cover plate and the second cover plate are further electrically connected, and the bad battery is excluded from a battery pack system.
Example 7
The present embodiment provides a large-capacity battery including a core assembly and the battery case disclosed in embodiments 1 to 5.
Example 8
This embodiment provides a series battery pack including at least 3 large-capacity batteries disclosed in embodiment 6.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (11)
1. A high capacity battery case and high capacity battery and series battery pack having the same, comprising:
a cover plate and a cylinder body,
the cover plate comprises a first cover plate and a second cover plate which are respectively an anode and a cathode of a battery, the cover plate and the cylinder body enclose to form a battery shell, and the cover plate is connected with the cylinder body in an insulating way;
a deformable connecting part is arranged between the first cover plate and the second cover plate, and the deformable connecting part has conductivity;
in the first state, the deformable connecting part keeps the original shape and is not simultaneously contacted with the first cover plate and the second cover plate;
and in a second state, the deformable connecting part deforms and then simultaneously contacts with the first cover plate and the second cover plate, so that the first cover plate and the second cover plate are electrically connected.
2. A large capacity battery case as set forth in claim 1, wherein said deformable connecting member comprises: a first conductor, a second conductor,
the first conductor is arranged on one side of the first cover plate facing the cylinder,
the second conductor is arranged on one side of the second cover plate facing the cylinder,
one surface of the first conductor, which is far away from the first cover plate, is provided with a raised fixing part, and at least one side surface of the fixing part is provided with a deformable block;
one surface of the second conductor, which is far away from the second cover plate, is provided with a groove which is sleeved with the first conductor;
a gap is arranged at the overlapping part of the fixing part and the groove so as to insulate the first conductor and the second conductor;
the part of the first conductor, which is overlapped with the groove, is insulated and sealed;
in the first state, the deformable mass retains an original shape and is not in contact with the second electrical conductor;
in the second state, the deformable connecting member is deformed to partially fill the deformable connecting member
A gap for electrically connecting the first cover plate and the second cover plate.
3. A large capacity battery case as defined in claim 2, wherein said first conductor and/or said second conductor is provided with a thermistor, and when said case is in the second state, the temperature exceeds a threshold value, and the resistance of said thermistor becomes large and non-conductive, so that said first conductor and/or said second conductor are electrically disconnected; when the temperature of the battery shell is lower than the threshold value, the resistance of the thermistor is reduced, the conduction is recovered, and the first conductor is electrically connected with the second conductor.
4. A large capacity battery case as set forth in claim 2, wherein said deformable connecting member is a fusible metal.
5. A large capacity battery case as defined in claim 4, wherein said fusible metal has a melting point of not less than 150 ℃.
6. A large capacity battery case as set forth in claim 2, wherein said first conductor and/or said second conductor is further provided with a closed phase change material chamber outside/inside to be filled with a phase change material.
7. A large capacity battery case as defined in claim 6, wherein said phase change material has a phase transition temperature range of not less than 60 ℃.
8. A large capacity battery case as claimed in claim 6, wherein said phase change material is paraffin and paraffin-based hybrid phase change material.
9. A large capacity battery case as set forth in claim 2, wherein said gap width is not less than 0.5 mm.
10. A large capacity battery characterized by comprising any one of the above battery cases.
11. A series battery pack of large-capacity batteries comprises the large-capacity batteries.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332848.9A CN114865233A (en) | 2022-03-30 | 2022-03-30 | High-capacity battery shell, high-capacity battery with shell and series battery pack |
| PCT/CN2022/143710 WO2023125886A1 (en) | 2021-12-31 | 2022-12-30 | High-capacity battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332848.9A CN114865233A (en) | 2022-03-30 | 2022-03-30 | High-capacity battery shell, high-capacity battery with shell and series battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114865233A true CN114865233A (en) | 2022-08-05 |
Family
ID=82628970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210332848.9A Pending CN114865233A (en) | 2021-12-31 | 2022-03-30 | High-capacity battery shell, high-capacity battery with shell and series battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114865233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125886A1 (en) * | 2021-12-31 | 2023-07-06 | 陕西奥林波斯电力能源有限责任公司 | High-capacity battery |
-
2022
- 2022-03-30 CN CN202210332848.9A patent/CN114865233A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125886A1 (en) * | 2021-12-31 | 2023-07-06 | 陕西奥林波斯电力能源有限责任公司 | High-capacity battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100477750B1 (en) | Electorde assembly for lithium ion cell and lithium ion cell using the same | |
| US6139986A (en) | Lithium secondary battery | |
| US9240575B2 (en) | Power supply apparatus | |
| KR101753213B1 (en) | Battery cell and Secondary battery assembly comprising the same | |
| US20160380247A1 (en) | Battery Packs Having Single Stacks of Battery Cells | |
| KR20150034498A (en) | Battery cell with venting cover and Secondary battery comprising the same | |
| KR101715695B1 (en) | Battery pack and inter-busbar applied for the same | |
| KR20180064221A (en) | Cylindrical secondary battery module | |
| KR20170027498A (en) | Battery pack | |
| KR100662174B1 (en) | Nonaqueous electrolyte secondary battery | |
| CN114865233A (en) | High-capacity battery shell, high-capacity battery with shell and series battery pack | |
| KR100804893B1 (en) | Connecting structure for battery cap and PTC device, and Secondary battery using the same | |
| KR102486134B1 (en) | Cylindrical-type Battery Comprising Gasket- Washer for High-effective Sealing | |
| KR101422656B1 (en) | Battery Cell of Novel Embedded Type Structure | |
| CN218525698U (en) | High-capacity battery shell, high-capacity battery with shell and series battery pack | |
| CN115312981A (en) | High-capacity battery shell, high-capacity battery with shell and series battery pack | |
| KR101128667B1 (en) | Secondary Battery of Improved Safety | |
| CN213660587U (en) | Battery cover plate assembly and lithium ion battery | |
| KR101112447B1 (en) | Secondary Battery of Improved Safety | |
| KR101787633B1 (en) | Battery pack with improved safety | |
| CN218414941U (en) | High-capacity battery shell, high-capacity battery with shell and series battery pack | |
| KR100803434B1 (en) | PTC device mounted to battery cap and Secondary battery having the same | |
| CN220984657U (en) | Top cover assembly for battery and battery | |
| CN115084713B (en) | Battery packaging part and sodium ion battery | |
| CN216720064U (en) | Battery cell and battery module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |