CN113540703B - Battery pack and electrical connection device - Google Patents
Battery pack and electrical connection device Download PDFInfo
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- CN113540703B CN113540703B CN202110801797.5A CN202110801797A CN113540703B CN 113540703 B CN113540703 B CN 113540703B CN 202110801797 A CN202110801797 A CN 202110801797A CN 113540703 B CN113540703 B CN 113540703B
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- structural member
- electrical connection
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- battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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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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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
A battery pack for connecting an electrical connection device includes a first space case, a first electrical connection portion, a battery cell assembly, a first structural member and a second structural member. The shell comprises a first wall and an opening arranged on the first wall, and the opening is communicated with the first space. The first electric connection part is at least partially arranged in the opening, and the first electric connection part is in plug-in connection with the second electric connection part of the electric connection device. The electric core assembly is arranged in the first space. The first structural member is disposed between the first wall and the electric core assembly, the first structural member being configured to be compressed when the electric core assembly expands. The second structural member is arranged between the first structural member and the electric core component. The second structural member includes a first portion configured to push the second structural member when the core assembly expands, causing the first portion to push the second electrical connection and occupy at least a portion of the opening, restricting the first electrical connection from electrically connecting with the second electrical connection. The battery pack and the electric connecting device can cut off the connection between the battery pack and the outside, and reduce the probability and harm of the battery pack out of control.
Description
Technical Field
The application relates to the technical field of energy storage, in particular to a battery pack and an electric connection device.
Background
After a plurality of electric cores form the battery package through the series-parallel connection, when normally using, misusing, abusing, probably because reasons such as external force extrusion, external force puncture, high temperature circulation, high temperature storage, overcharge, short circuit lead to the electric core to appear abnormal expansion, and then produce stress deformation, weeping, the risk of thermal runaway even, but present battery can't be after electric core abnormal expansion, independently cut off the circuit, reduce electric core probability and harm out of control.
Disclosure of Invention
In view of the above, it is desirable to provide a battery pack and an electrical connection device, which can cut off the external energy input and reduce the probability and harm of runaway.
Embodiments of the present application provide a battery pack for connection to an electrical connection device, including a housing, a first electrical connection portion, an electrical core assembly, a first structural member, and a second structural member. The casing is equipped with first space, and the casing includes first wall and locates the opening of first wall, opening and first space intercommunication. The first electric connection part is at least partially arranged in the opening and can be used for being in plug-in connection with the second electric connection part of the electric connection device. The electric core component is arranged in the first space. A first structural member is disposed between the first wall and the electric core assembly, the first structural member being configured to be compressed when the electric core assembly is expanded. The second structural member is arranged between the first structural member and the electric core assembly. The second structural member includes a first portion configured to push the second structural member when the cell assembly expands such that the first portion pushes the second electrical connection and occupies at least a portion of the opening to restrict electrical connection of the first electrical connection and the second electrical connection.
When the first electrical connection part and the second electrical connection part are electrically connected, the battery cell pushes the second structural member when expanding, so that the first part of the second structural member pushes the second electrical connection part and breaks the electrical connection between the first electrical connection part and the second electrical connection part, when the first electric connection part and the second electric connection part are not electrically connected, the electric core pushes the second structural member when expanding, so that the first part of the second structural member occupies the position of the opening, the second electric connection part is limited to be electrically connected with the first electric connection part, the external energy is limited to be continuously input into the electric core assembly or the electric core assembly outputs energy to the outside, and the connection between the battery pack and the external energy is cut off in time, and occupy the position of opening, restrict second electric connection portion and first electric connection portion and realize the electricity and connect, reduce electric core subassembly probability and harm out of control.
Further, in some embodiments of the present application, the battery cell assembly includes a plurality of battery cells stacked in a first direction. Each cell includes a receiving portion for receiving an electrode assembly of the cell. The second structural member includes a second portion connected to the first portion. The second portion includes a first section disposed between the receptacle and the first structural member in the first direction.
Further, in some embodiments of the present application, the second structural member further includes a second section connecting the first portion and the first section, the second section extending out of the receptacle along an extending direction of the second portion.
The above embodiment is used to make the surface of the second structural member fully cover the surface of the accommodating portion in the second direction Y, so as to receive the expansion force generated by the expansion of any position of the battery cell, improve the response force of the battery pack 100 when the battery cell expands, and cut off the external energy input in time.
Further, in some embodiments of the present application, the opening includes a first opening and a second opening, the first electrical connection is at least partially disposed in the first opening, the second opening is operable to receive at least a portion of the second electrical connection, and the second opening is configured to push the first portion into the second opening when the core assembly expands, such that the first portion pushes the second electrical connection and breaks the electrical connection between the first electrical connection and the second electrical connection.
Further, in some embodiments of the present application, the second structural member further includes a third portion disposed along the first direction, the third portion being connected to an end of the second portion facing away from the first portion, and a distance between the third portion and the first wall is greater than a distance between the first portion and the first wall along the first direction.
The above-described embodiments are for enabling the first portion to enter the second opening to push the second electrical connection.
Further, in some embodiments of the present application, the first structural member includes a first component and a second component. The second structural member is disposed between the first component and the second component. The first component is arranged between the electric core assembly and the second structural member. The second component is arranged between the first wall and a second structural member, and the second structural member is rotatably connected to the shell. When the battery core expands, the first component is pressed and the second component is pressed and rotated by the second structural member, so that the first part pushes the second electric connection part and the first electric connection part and the second electric connection part are disconnected.
Further, in some embodiments of the present application, the first electrical connection portion includes a first terminal, the second electrical connection portion includes a second terminal, and when the first electrical connection portion and the second electrical connection portion are inserted in opposition in the first direction, an insertion connection distance of the first terminal and the second terminal is L 1 The distance between the third part and the first wall is L 2 ，L 2 Greater than L 1 。
The above-described embodiments are used to separate the second electrical connection portion from the first electrical connection portion.
Further, in some embodiments of the present application, the first electrical connection portion has a distance L in the first direction 3 ，L 3 Greater than L 1 ，L 2 Greater than L 3 。
The embodiment is used for enabling the second electric connection part to be completely separated from the shell, so that the possibility of electric reconnection after the second electric connection part is separated from the first electric connection part is reduced, and the safety of the battery pack is improved.
Further, in some embodiments of the present application, one end of the second structural member is rotatably connected to the housing, and the other end is provided with a first portion, and the length of the first portion is greater than the insertable distance of the first electrical connection portion along the first direction.
Further, in some embodiments of the present application, one end of the second portion is provided with a movable wheel connected to the housing, and the other end is rotatably connected to the first portion for adjusting the position of the first portion.
The above-mentioned embodiment facilitates the adjustment of the angle of the first portion with respect to the second portion, so that the first portion can enter the second opening accurately.
Further, in some embodiments of the present application, the first structural member comprises foam.
An embodiment of the present application further provides an electrical connection device, including the above battery pack.
When the first electrical connection part and the second electrical connection part are electrically connected, by arranging the first structural member and the second structural member in the shell, the battery cell pushes the second structural member when expanding, so that the first part of the second structural member pushes the second electric connection part and breaks the electric connection between the first electric connection part and the second electric connection part, when the first electric connection part and the second electric connection part are not electrically connected, the electric core pushes the second structural member when expanding, so that the first part of the second structural member occupies the position of the opening, the second electric connection part is limited to be electrically connected with the first electric connection part, the external energy is limited to be continuously input into the electric core assembly or the electric core assembly outputs energy to the outside, and the connection between the battery pack and the external energy is cut off in time, and occupy the position of opening, the restriction makes second electric connection portion and first electric connection portion realize the electricity and connect, reduces electric core subassembly probability and harm out of control.
Drawings
Fig. 1 shows a schematic diagram of the structure of a battery pack in some embodiments.
Fig. 2 shows a schematic sectional structure of a battery pack in some embodiments.
Fig. 3 illustrates a schematic view of the second electrical connection being disconnected from the battery pack in some embodiments.
Fig. 4 shows a schematic structural diagram of a cell in some embodiments.
FIG. 5 illustrates a schematic of a second structural member in some embodiments.
Fig. 6 illustrates a schematic view of another perspective of the second structural member in some embodiments.
Fig. 7 shows a schematic view of the second structural element in further exemplary embodiments.
Fig. 8 shows a schematic cross-sectional view of a battery pack in further embodiments.
Fig. 9 is a schematic view showing a structure in which the second electrical connection portion is detached from the battery pack in other embodiments.
Fig. 10 shows a schematic structural diagram of an electrical connection device in an embodiment.
Description of the main element symbols:
The first space 10a
First opening 121
First electrical connection 20
First structural member 40
Second structural member 50
The movable wheels 52a
Second electrical connection 200
First direction X
Second direction Y
The following specific examples will further illustrate the application in conjunction with the above figures.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
It will be understood that when two elements are disposed in the same direction when they are disposed in parallel/perpendicular, there can be an angle between the elements, a tolerance of 0- ± 5% between the elements, and a tolerance of 0- ± 10% greater, equal or less than the tolerance allowed.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following embodiments, features of the embodiments may be combined with each other without conflict.
Referring to fig. 1 and 2, an embodiment of the present invention provides a battery pack 100, wherein the battery pack 100 includes a housing 10, a first electrical connection portion 20, a battery cell assembly 30, a first structural member 40, and a second structural member 50. In the casing 10 was located to cell subassembly 30, first electric connection 20 was located on casing 10 and was connected in the electric cell subassembly 30, and first electric connection 20 is used for to plug-in connection with external electric connection's second electric connection 200 to make external electric connection carry out energy input or cell subassembly 30 carries out energy output to external electric connection to cell subassembly 30. The first structural member 40 is disposed in the housing 10, the second structural member 50 is disposed between the first structural member 40 and the electric core assembly 30, the first structural member 40 is configured to be compressed when the electric core assembly 30 expands, the second structural member 50 is configured to push the second structural member 50 when the electric core assembly 30 expands, so that the second structural member 50 pushes the second electric connection portion 200, when the first electric connection portion 20 and the second electric connection portion 200 are electrically connected, the electric connection between the first electric connection portion 20 and the second electric connection portion 200 is disconnected, the external energy is limited to continue to be input into the electric core assembly 30 or the electric core assembly 30 continues to be output to the external electric connection device, the connection between the battery pack 100 and the external energy is cut off in time, when the first electric connection portion 20 and the second electric connection portion 200 are not electrically connected, the electric core assembly 30 pushes the second structural member 50 when expanding, so that the second structural member 50 occupies the position where the first electric connection portion 20 and the second electric connection portion 200 are oppositely inserted, the second electrical connection portion 200 is restricted from being electrically connected with the first electrical connection portion 20, and the probability and harm of the electric core assembly 30 being out of control are reduced. The housing 10 has a first space 10a for accommodating the electric core assembly 30. The housing 10 includes a first wall 11 and an opening 12, the opening 12 is disposed on the first wall 11 and is communicated with the first space 10a, the first electrical connection portion 20 is at least partially disposed in the opening 12, and the second electrical connection portion 200 is at least partially disposed in the opening 12 when the plug-in connection is performed. In one embodiment, the second electrical connection 200 includes a charging and discharging contact of an external electrical connection device.
Referring to fig. 1 and fig. 2, in an embodiment, the opening 12 includes a first opening 121 and a second opening 122, wherein the first opening 121 is at least partially disposed in the first opening 121, and the first electrical connection portion 20 is at least partially disposed in the first opening 121. It is understood that the first electrical connection portion 20 may be disposed entirely within the first opening 121, or a portion may be disposed within the first opening 121 and another portion may be disposed within the second opening 122. In an embodiment, the first electrical connection portion 20 may be embedded in the first wall 11 of the casing 10, or partially protrude from the first wall 11. The second opening 122 may be used to receive at least a portion of the second electrical connection 200. It is understood that when the second electrical connection portion 200 is connected to the first electrical connection portion 20, a portion of the second electrical connection portion 200 is disposed within the first opening 121 and another portion is disposed within the second opening 122. When the electric core assembly 30 expands, the electric core assembly 30 pushes the second structure 50 to move and enter the second opening 122 by the expansion force, so that the second structure 50 pushes the second electric connection portion 200, and the second electric connection portion 200 is separated from the first electric connection portion 20, so as to disconnect the electric connection of the first electric connection portion 20 and the second electric connection portion 200. When the first electrical connection portion 20 and the second electrical connection portion 200 are not electrically connected, the electrical core assembly 30 pushes the second structural member 50 when expanding, so that the second structural member 50 moves and occupies the second opening 122, and the electrical connection of the second electrical connection portion 200 and the first electrical connection portion 20 is limited.
The first electrical connection portion 20 includes a first terminal 21, the second electrical connection portion 200 includes a second terminal 201, and when the first electrical connection portion 20 and the second electrical connection portion 200 are inserted into each other, the first terminal 21 and the second terminal 201 are inserted into each other and electrically connected. The first terminal 21 and the second terminal 201 are inserted by a distance L along the first direction X 1 The first electrical connection portion 20 has a length L 3 Wherein L is 3 Greater than L 1 For locating the first terminal 21 in the first electrical connectionIn the portion 20, the first terminal 21 is protected, so that the possibility that the first terminal 21 is impacted by external force is reduced, and the probability that the first terminal 21 is damaged is reduced.
In an embodiment, the first electrical connection portion 20 may be embedded in the first wall 11 of the casing 10, or partially protrude from the first wall 11.
Referring to fig. 3 and 4, the cell assembly 30 includes a plurality of cells 31 stacked along the first direction X, and foam 32 is disposed between adjacent cells 31. The battery cell 31 includes an electrode assembly 311, a cell casing 313, and an electrode terminal 315, wherein the electrode terminal 315 is connected to the electrode assembly 311 and protrudes from the cell casing 313. The electrode assembly 311 includes a winding type structure formed by winding a positive electrode tab, a negative electrode tab, and a separator. The cell case 313 includes a receiving portion 313a for receiving the electrode assembly 311 and a sealing portion 313b extending outward from the receiving portion 313a, and the electrode terminal 315 extends out of the cell case 313 from the sealing portion 313 b. It is understood that the cell assembly 30 may be provided as a single cell 31.
In one embodiment, the cell casing 313 includes a first region 313c and a second region 313d, the first region 313c is provided with a second space 3131, the electrode assembly 311 is disposed in the second space 3131, the first region 313c is connected to the second region 313d, the side edges of the first region 313c are connected to the side edges of the second region 313d to form a plurality of edge sealing portions 313b, and the electrode terminal 315 extends out of the cell casing 313 from one edge sealing portion 313 b.
Referring to fig. 3, 5 and 6, the second structural member 50 includes a first portion 51 and a second portion 52 connected to the first portion 51. The first portion 51 is used for pushing the second portion 52 to move and making the first portion 51 enter the second opening 122 along the first direction X by the expansion force of the electric core assembly 30 when the electric core assembly 30 expands, so that the first portion 51 pushes the second electric connection portion 200 and the second electric connection portion 200 is separated from the first electric connection portion 20 to disconnect the electric connection of the first electric connection portion 20 and the second electric connection portion 200.
The second portion 52 is disposed along a second direction Y perpendicular to the first direction X, and the second portion 52 includes a first section 521, and the first section 521 is disposed between the accommodating portion 313a and the first structural member 40 along the first direction X. In an embodiment, the first section 521 includes a first side 521a and a second side 521b along the first direction X, the first structural member 40 includes a third side 40a and a fourth side 40b along the first direction X, the first side 521a abuts against the accommodating portion 313a, that is, the first side 521a contacts with a surface of the accommodating portion 313a along the first direction X, the first side 521a is connected to the accommodating portion 313a by adhesion or the like, the second side 521b is connected to the third side 40a, and the fourth side 40b is spaced from or abuts against the first wall 11.
In another embodiment, the first side 521a is connected to the accommodating portion 313a, the fourth side 40b is connected to the first wall 11, and the second side 521b is spaced apart from the third side 40 a.
In another embodiment, the first side 521a is spaced apart from the receiving portion 313a, the second side 521b is connected to the third side 40a, and the fourth side 40b is connected to the first wall 11.
In an embodiment, the second portion 52 further includes a second section 522, the second section 522 is disposed at two ends of the first section 521 along the second direction Y, wherein the second section 522 at one end connects the first portion 51 and the first section 521. The second section 522 extends out of the accommodating portion 313a along the extending direction of the second portion 52, and in the second direction Y, the length of the projection of the second portion 52 on the first wall 11 along the first direction X is greater than the length of the projection of the accommodating portion 313a on the first wall 11 along the first direction X, which is beneficial for the surface of the second structural member 50 to completely cover the surface of the accommodating portion 313a in the second direction Y, so that the expansion force generated by the expansion of any position of the battery cell 31 can be received, the response force of the battery pack 100 when the battery cell 31 expands can be improved, and the external energy input can be cut off in time.
Referring to fig. 3, in an embodiment, the second structural member 50 further includes a third portion 53, the third portion 53 is disposed along the first direction X and connected to an end of the second portion 52 away from the first portion 51, and the second section 522 connects the third portion 53 and the first section 521. The third portion 53 is spaced apart from the first wall 11 along the first direction X, and limits a distance of the first portion 51 moving along the first direction X. The distance between the third portion 53 and the first wall 11 is greater than the distance between the first portion 51 and the first wall 11 along the first direction X, which can be used to enable the first portion 51 to be movedInto the second opening 122 to push the second electrical connection 200. The distance between the third portion 53 and the first wall 11 along the first direction X is L 2 ，L 2 Is larger than the insertion distance L of the first terminal 21 and the second terminal 201 1 And can be used to separate the second electrical connection portion 200 from the first electrical connection portion 20.
In an embodiment, the distance L between the third portion 53 and the first wall 11 2 Is also larger than the mutual insertion distance L of the first terminal 21 and the second terminal 201 1 The battery pack can be used for completely separating the second electrical connection part 200 from the housing 10, reducing the possibility of electrical reconnection after the second electrical connection part 200 is separated from the first electrical connection part 20, and improving the safety of the battery pack 100. It will be appreciated that when the first portion 51 pushes the second electrical connection portion 200, the first portion 51 is disposed in the second opening 122, occupying the insertion position of the second electrical connection portion 200, limiting the reinsertion of the second electrical connection portion 200 into the first electrical connection portion 20, reducing the likelihood of continued use of the battery pack 100 in a risk situation.
In an embodiment, the first structural member 40 is disposed between the first portion 51 and the third portion 53 along the second direction Y.
Referring to fig. 7, 8 and 9, in another embodiment, the first structural member 40 includes a first component 41 and a second component 42. The second structural member 50 is disposed between the first component 41 and the second component 42, and the second structural member 50 is rotatably connected to the housing 10. Along the first direction X, the first component 41 is disposed between the accommodating portion 313a and the second structural member 50, and the second component 42 is disposed between the second structural member 50 and the first wall 11. When the battery cell 31 expands, the expansion force generated by the battery cell 31 presses the first component 41, the second component 50 rotates via the first component 41 and presses the second component 42, and during the rotation of the second component 50, the first portion 51 pushes the second electrical connection portion 200 and disconnects the electrical connection between the first electrical connection portion 20 and the second electrical connection portion 200.
In one embodiment, the first structural member 40 comprises foam. In an embodiment, when the casing 10 is filled with a potting adhesive, the first structural member 40 may also be a potting adhesive. When the battery cell 31 expands, the expansion force generated by the battery cell 31 is transmitted to the second structural member 50 through the potting adhesive. It will be appreciated that the first structural member 40 has a compressive force, which reduces the chance of the second structural member 50 being erroneously pushed by a shock or a fall.
In an embodiment, along the first direction X, the first component 41 abuts against the accommodating portion 313a, the second component 42 is connected to the first wall 11, and the second portion 52 of the second structural member 50 is disposed between the first component 41 and the second component 42 and is respectively connected to the first component 41 and the second component 42.
In an embodiment, the second component 42 is connected to the first wall 11 along the first direction X, the first component 41 is spaced apart from the receiving portion 313a, and the second portion 52 of the second structural member 50 is disposed between the first component 41 and the second component 42 and is connected to the first component 41 and the second component 42, respectively. Alternatively, the second structural member 50 is connected in contact with the first component 41, and the second structural member 50 is connected in contact with the second component 42.
In one embodiment, the first component 41 is connected to the receiving portion 313a, the second component 42 is spaced apart from the first wall 11, and the second portion 52 of the second structural member 50 is disposed between the first component 41 and the second component 42 and connected to the first component 41 and the second component 42, respectively, along the first direction X. Alternatively, the second structural member 50 is connected in contact with the first component 41, and the second structural member 50 is connected in contact with the second component 42.
In the second direction Y, the length of the projection of the first component 41 on the first wall 11 along the first direction X is greater than the length of the projection of the accommodating portion 313a on the first wall 11 along the first direction X, so that the surface of the first component 41 entirely covers the surface of the accommodating portion 313a in the second direction Y, the first component 41 can receive the expansion force generated by the expansion of any position on the surface of the accommodating portion 313a, the response force of the battery pack 100 when the battery cell 31 expands is improved, and the external energy input is cut off in time.
The first portion 51 and the second portion 52 of the second structural member 50 are connected by a rotating portion 50a, and the rotating portion 50a facilitates adjusting an angle of the first portion 51 relative to the second portion 52 to allow the first portion 51 to enter the second opening 122. The end of the second part 52 facing away from the first part 51 is provided with a movable wheel 52a,the movable wheels 52a are fixed inside the housing 10, and the second structural member 50 is rotated by the movable wheels 52 a. The length of the first portion 51 is at least longer than the insertion distance L of the first terminal 21 and the second terminal 201 1 . In an embodiment, the length of the first portion 51 is greater than the insertable distance L of the first electrical connection 20 along the first direction X 3 For the first portion 51 to separate the first electrical connection 20 and the second electrical connection 200 and to push the second electrical connection 200 away from the housing 10.
The present application will be further illustrated by the following specific examples.
Example 1
The mode that the second structural member 50 translates along the first direction X is adopted, and the verification is performed in the non-pouring sealant battery pack 100, the whole battery pack 100 is not processed, and the battery is expanded by overcharging the whole battery pack 100 with the voltage 1.6 times that of the battery pack 100 under the condition that the protection device is removed.
Example 2
Verification is performed in the pouring sealant battery pack 100 by adopting a mode that the second structural member 50 translates along the first direction X, wherein the pouring sealant is filled in the battery pack 100, the whole battery pack 100 is not subjected to any treatment, and the battery is expanded by overcharging the whole battery pack 100 under the condition that the protection device is removed by 1.6 times of voltage.
Example 3
The rotation of the second structural member 50 is adopted to verify that the whole battery pack 100 is not processed, and the battery is expanded by overcharging the whole battery pack 100 with 1.6 times of voltage under the condition of removing the protection device in the battery pack 100 without pouring sealant.
Example 4
Verification is performed in the pouring sealant battery pack 100 by adopting a mode that the second structural member 50 rotates, wherein the pouring sealant is filled in the battery pack 100, the whole battery pack 100 is not subjected to any treatment, and the battery is expanded by overcharging the whole battery pack 100 under the condition that the protective device is removed by 1.6 times of voltage.
Comparative example 1
In the battery pack without the pouring sealant, verification is carried out, the whole battery pack is not processed, and the battery is expanded by overcharging the whole battery pack under the condition that the protection device is removed by 1.6 times of voltage.
Comparative example 2
The verification is carried out in the pouring sealant battery pack, wherein the pouring sealant is filled in the battery pack, the whole battery pack is not processed, and the battery is expanded by overcharging the whole battery pack under the condition of removing the protection device by 1.6 times of voltage.
Examples 1-4 and comparative examples 1-2, above, were run 10 times per embodiment, with the following validation criteria: the charging joint is ejected out in the overcharging process, the charging loop is broken, namely the test is passed, and the test results are as follows:
| example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | |
| Number of |
10 | 6 | 10 | 10 | 0 | 0 |
It can be seen that ten trials of example 1, example 3 and example 4 all passed, and ten trials of comparative example 1 and comparative example 2 all failed. The battery pack 100 can cut off connection between the battery pack 100 and external energy in time, and probability and harm of out-of-control battery pack assembly 30 are reduced. Wherein the passing times of the example 2 is 6, and the passing times of the example 4 is 10. In the potting adhesive battery pack 100, the second structure member 50 is rotated, so that the effect of blocking the charging loop is further improved.
Referring to fig. 10, the present application further provides an electrical connection device 300 using the battery pack 100, which can be used by connecting the first electrical connection portion 20 through a wire. In one embodiment, the electrical connection device 300 of the present application may be, but is not limited to, a portable facsimile machine, a portable copier, a portable printer, a video recorder, a liquid crystal television, a handheld cleaner, a transceiver, a backup power source, an electric motor, an electric car, an electric motorcycle, an electric power assisted bicycle, an electric power tool, a large household battery, a charger, a charging gun, and the like.
According to the battery pack 100 and the electric connection device 300, the first structural member 40 and the second structural member 50 are arranged in the casing 10, so that when the battery cell 31 expands, the expansion force generated by the battery cell 31 is used for pushing the second structural member 50, the first part 51 of the second structural member 50 pushes the second electric connection part 200, the electric connection between the first electric connection part 20 and the second electric connection part 200 is disconnected, the external energy is prevented from being continuously input into the battery cell assembly 30 or the battery cell assembly 30 is prevented from continuously outputting external equipment, the connection between the battery pack 100 and the external energy is cut off in time, when the first electric connection part 20 and the second electric connection part 200 are not electrically connected, the first part 51 of the second structural member 50 occupies the insertion position of the second electric connection part 200, the electric connection between the first electric connection part 20 and the second electric connection part 200 is prevented, and the probability and the hazard of the electric connection part 30 being out of control are reduced.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present application and are not to be taken as limiting the present application, and that suitable changes and modifications to the above embodiments are within the scope of the present disclosure as long as they are within the spirit and scope of the present application.
Claims (10)
1. A battery pack for connection to an electrical connection device, comprising:
the shell is provided with a first space and comprises a first wall and an opening arranged on the first wall, and the opening is communicated with the first space;
the first electric connection part is at least partially arranged in the opening and can be used for being in plug-in connection with the second electric connection part of the electric connection device;
the electric core assembly is arranged in the first space;
a first structural member disposed between the first wall and the electric core assembly, the first structural member configured to be compressed when the electric core assembly is expanded;
the second structure is arranged between the first structure and the electric core assembly and comprises a first part, and the second structure is configured to push the second structure when the electric core assembly expands, so that the first part pushes the second electric connection part and occupies at least part of the opening to limit the electric connection of the first electric connection part and the second electric connection part.
2. The battery of claim 1, wherein the cell assembly comprises:
the battery pack comprises a plurality of battery cells stacked along a first direction, wherein each battery cell comprises a containing part for containing an electrode assembly of the battery cell;
the second structure includes a second portion connected to the first portion, the second portion including a first section, the first section being disposed between the receiving portion and the first structure along the first direction.
3. The battery of claim 2, wherein the second structural member further comprises a second section connecting the first portion and the first section, the second section extending out of the receptacle in a direction of extension of the second portion.
4. The battery of claim 1, wherein the opening comprises a first opening and a second opening, the first electrical connection being at least partially disposed in the first opening, the second opening being operable to receive at least a portion of the second electrical connection, the second opening being configured such that expansion of the battery assembly pushes the first portion into the second opening such that the first portion pushes the second electrical connection and breaks the electrical connection between the first electrical connection and the second electrical connection.
5. The battery of claim 3, wherein the second structural member further comprises a third portion disposed along the first direction, the third portion being connected to an end of the second portion facing away from the first portion, wherein a distance between the third portion and the first wall is greater than a distance between the first portion and the first wall along the first direction.
6. The battery of claim 2, wherein the first structural member comprises a first component and a second component, the second structural member disposed between the first component and the second component, the first component disposed between the cell assembly and a second structural member disposed between the first wall and the second structural member, the second structural member rotatably coupled to the housing.
7. The battery pack of claim 5, wherein the first electrical connection portion includes a first terminal and the second electrical connection portion includes a second terminal, and wherein the first and second terminals are inserted into each other along the first direction by an insertion distance L 1 A distance L between the third portion and the first wall 2 Said L is 2 Greater than L 1 。
8. The battery pack according to claim 7, wherein the first electrical connection portion has a distance L in the first direction 3 Said L is 3 Greater than L 1 Said L is 2 Greater than said L 3 。
9. The battery of claim 1, wherein the first structural member comprises foam.
10. An electrical connection device comprising a battery pack as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801797.5A CN113540703B (en) | 2021-07-15 | 2021-07-15 | Battery pack and electrical connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801797.5A CN113540703B (en) | 2021-07-15 | 2021-07-15 | Battery pack and electrical connection device |
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| CN113540703A CN113540703A (en) | 2021-10-22 |
| CN113540703B true CN113540703B (en) | 2022-08-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0883600A (en) * | 1994-09-13 | 1996-03-26 | Nikkiso Co Ltd | Safety device for secondary battery and nonaqueous electrolyte secondary battery having safety device |
| JP2002151050A (en) * | 2000-11-09 | 2002-05-24 | Alps Electric Co Ltd | Current shut-off element for battery |
| JP2015056380A (en) * | 2013-09-13 | 2015-03-23 | 株式会社豊田自動織機 | Current interrupting device and power storage device using the same |
| CN212062535U (en) * | 2020-06-17 | 2020-12-01 | 东莞新能安科技有限公司 | Battery pack and electronic device having the same |
| CN113097665A (en) * | 2021-03-30 | 2021-07-09 | 东莞新能安科技有限公司 | Battery module and electric device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5220588B2 (en) * | 2005-05-02 | 2013-06-26 | エルジー・ケム・リミテッド | Medium or large improved battery pack with improved safety |
| KR102259412B1 (en) * | 2017-08-31 | 2021-06-01 | 주식회사 엘지에너지솔루션 | Battery bodule comprising a connector breaking device |
-
2021
- 2021-07-15 CN CN202110801797.5A patent/CN113540703B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0883600A (en) * | 1994-09-13 | 1996-03-26 | Nikkiso Co Ltd | Safety device for secondary battery and nonaqueous electrolyte secondary battery having safety device |
| JP2002151050A (en) * | 2000-11-09 | 2002-05-24 | Alps Electric Co Ltd | Current shut-off element for battery |
| JP2015056380A (en) * | 2013-09-13 | 2015-03-23 | 株式会社豊田自動織機 | Current interrupting device and power storage device using the same |
| CN212062535U (en) * | 2020-06-17 | 2020-12-01 | 东莞新能安科技有限公司 | Battery pack and electronic device having the same |
| CN113097665A (en) * | 2021-03-30 | 2021-07-09 | 东莞新能安科技有限公司 | Battery module and electric device |
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| Publication number | Publication date |
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| CN113540703A (en) | 2021-10-22 |
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