CN108489813A - Welding detection device and welding system - Google Patents
Welding detection device and welding system Download PDFInfo
- Publication number
- CN108489813A CN108489813A CN201810439355.9A CN201810439355A CN108489813A CN 108489813 A CN108489813 A CN 108489813A CN 201810439355 A CN201810439355 A CN 201810439355A CN 108489813 A CN108489813 A CN 108489813A
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- CN
- China
- Prior art keywords
- lug
- welding
- detection
- plate body
- detection device
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
Abstract
The present invention provides a kind of welding detection device and welding systems, are related to welding technology field.The welding detection device on detection plate body by being arranged detection unit, detection unit can be attached by lug actuation portion and the lug on pole piece, the pulling force of the electrode far from battery core, the detection to realization to tab welding intensity can be applied to lug by detection plate body after being attracted connection.The welding detection device is simple in structure, easy to operate, will not be damaged to soldered lug in detection process, and can be detected simultaneously to multiple lugs in battery modules, detection efficiency higher.
Description
Technical field
The present invention relates to welding technology fields, in particular to a kind of welding detection device and welding system.
Background technology
Battery modules can be powered to other devices, such as can be as the power resources of electric vehicle.Battery mould
Battery core in group in an assembling process, needs to be welded with current-collecting devices such as pole pieces.But it is in an assembling process due to battery core, electric
The electrode of core will not be bonded closely with pole piece, and electrode, which is bonded not may result in closely in welding process with pole piece, rosin joint or weldering occurs
Phenomena such as wearing.
Invention content
In view of this, the present invention provides a kind of welding detection device and welding system, can solve the above problems.
In detail, technical solution provided by the invention is as follows：
A kind of welding detection device, the bonding strength for detecting lug and battery cell in battery modules, the battery
Module includes multiple battery cells and at least one pole piece, is provided on the pole piece multiple with the battery cell phase
The lug matched, the pole piece are connected by the lug with the battery cell, and the welding detection device includes：
Detect plate body；
Multiple detection units on the detection plate body are set, and the detection unit matches with the lug, described
Detection unit includes that the interconnecting piece and the lug actuation in the interconnecting piece other end is arranged that plate body is connect are detected in one end with described
Portion, lug actuation portion are used to be attracted with the lug and connect.
Further, lug actuation portion includes at least one actuation connector, and the actuation connector includes at least one
Variable cavity, the opening of the variable cavity are positioned close to the side of the lug.
Further, the detection unit further includes felt pad, and the felt pad is arranged in the lug interconnecting piece and institute
State the side that lug is in contact.
Further, lug actuation portion includes at least one magnetic attracting connector, and the magnetic attracting connector includes
It is positioned close at least one magnetic patch of the lug side, the magnetic attracting connector passes through the magnetic patch and the lug magnetic
Property be attracted connection.
Further, the detection unit further includes felt pad, and the felt pad is arranged in the magnetic patch close to the pole
The side of ear.
Further, the detection unit further includes the elastic component being set in outside the interconnecting piece, and the one of the elastic component
End is abutted with lug actuation portion, and the other end of the elastic component is abutted with the detection plate body.
Further, the welding detection device further includes the driving device being connected with the detection plate body, the drive
Dynamic device is arranged in the detection side of the plate body far from the detection unit, and the driving device is for driving the detection plate
Body is moved to the direction far from the pole piece.
Further, multiple connecting holes are provided on the detection plate body, the interconnecting piece is removably arranged described
In connecting hole.
Further, the connecting hole is threaded hole, and the spiral shell to match with the threaded hole is provided on the interconnecting piece
Column.
The present invention also provides a kind of welding systems, including above-mentioned welding detection device.
Welding detection device provided by the embodiments of the present application, by the way that detection unit, detection unit is arranged on detection plate body
It can be attached by lug actuation portion and the lug on pole piece, can be applied to lug by detecting plate body after being attracted connection
The pulling force for adding the electrode far from battery core, to realize the detection to tab welding intensity.The welding detection device is simple in structure, behaviour
Make simplicity, soldered lug will not be damaged in detection process, and can be simultaneously to more in battery modules
A lug is detected, detection efficiency higher.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the schematic diagram after welding detection device provided in an embodiment of the present invention is combined with battery modules.
Fig. 2 is the connection signal of the detection unit and battery cell in welding detection device provided in an embodiment of the present invention
Figure.
Fig. 3 is the schematic diagram of pole piece provided in an embodiment of the present invention.
Fig. 4 is the enlarged diagram of the parts I in Fig. 3.
Fig. 5 is a kind of schematic diagram of detection unit provided in an embodiment of the present invention.
Fig. 6 is the schematic diagram of another detection unit provided in an embodiment of the present invention.
Icon：100- welding detection devices；200- battery cells；201- pole pieces；211- lugs；101- detects plate body；
102- detection units；121- interconnecting pieces；122- lug actuations portion；123- elastic components.
Specific implementation mode
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, the detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit claimed invention below
Range, but it is merely representative of the selected embodiment of the present invention.Based on the embodiment of the present invention, those skilled in the art are not doing
The every other embodiment obtained under the premise of going out creative work, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.Meanwhile the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Battery pack can may include multiple battery modules in one battery pack, often as the power resources of electric vehicle
Include multiple battery cores in a battery modules.Battery core in one battery modules is collected electric current by pole piece, in battery modules
Battery core can be cylindrical battery core, soft pack cell or square electric cell.The specification of battery core can determines according to actual conditions,
In the embodiment of the present application, battery core can select the cylindrical battery core of 18650 specifications.Multiple battery cores pass through predetermined arrangement side
Formula stationary arrangement, while being connected the positive or negative pole of multiple battery cores by pole piece.Anode can be pre-set on pole piece
End and negative pole end, positive terminal and negative pole end can serve as the anode and cathode of the battery modules.
In the assembling process of battery modules, pole piece needs are connect with the electrode of battery core, can be ensured by being welded to connect
Pole piece can be reliably connected with battery core.Can multiple lugs be set according to the arrangement mode of battery core on pole piece, by by each pole
Ear is connected with the electrode of corresponding battery core, realizes the connection of battery core and pole piece.It, can during connecting lug with battery core
With the case where using the welding manners such as laser welding, such connection type is likely to occur not prison welding, or rosin joint occur etc.
Phenomenon.In the battery modules course of work, it is connect with battery core if there is vibrations or other operating modes, lug and loosely may result in pole
Ear falls off, and causes the normal battery core in battery modules that can not export electric energy outward, leads to the reduction of battery modules capacity.Meanwhile electricity
The rosin joint of pole and lug also can cause the internal resistance of battery core to increase, and so that battery core is susceptible to overheating, or even quick-fried spray, burning occur
Etc. abnormal conditions, bring hidden danger to the normal work of battery modules.
Therefore, it in the manufacturing process of battery modules, after the operation that the lug on completing pole piece is connected with electrode, needs
The bonding strength of lug is detected, determine that lug has securely been connect with electrode, existing detection method all passes through
It is manually detected, detection efficiency is very low, and ununified examination criteria, reduces the production efficiency of battery modules.
As shown in Figures 1 to 4, the embodiment of the present application provides a kind of welding detection device 100, for detecting battery modules
The bonding strength of middle lug 211 and battery cell 200, the battery modules include multiple battery cells 200 and at least one
Pole piece 201, multiple lugs 211 to match with the battery cell 200 are provided on the pole piece 201, and the pole piece 201 is logical
The lug 211 is crossed with the battery cell 200 to be connected.
The welding detection device 100 includes detection plate body 101 and detection unit 102.
The materials such as rigid plastics may be used in detection plate body 101, and the size of detection plate body 101 can be according to battery mould
The size of group is adjusted.As previously mentioned, in the embodiment of the present application, cylindrical battery may be used as battery in battery modules
Monomer 200.Multiple cylindrical batteries can assemble in groups during assembling in groups according to predetermined spread pattern.
The setting of detection unit 102 is on detection plate body 101, and the detection unit 102 matches with the lug 211, institute
It includes that interconnecting piece 121 and setting that one end is connect with the detection plate body 101 are another in the interconnecting piece 121 to state detection unit 102
The lug actuation portion 122 of one end, lug actuation portion 122 are used to be attracted with the lug 211 and connect.
The position of each battery cell 200 in the position for the detection unit 102 being arranged on detection plate body 101 and battery modules
Match, to ensure when the weld strength to lug 211 is detected, detection unit 102 can closely be inhaled with lug 211
It closes.
It is detailed, in a specific embodiment, as shown in figure 5, lug actuation portion 122 includes at least one suction
Splice grafting head, the actuation connector include at least one variable cavity, and the opening of the variable cavity is positioned close to the lug
211 side.Rubber may be used in 211 connector of lug or variable cavity is made in other soft materials so that the variable cavity
The volume of chamber can change, after the opening of the variable cavity and lug 211 are fitted, then can be emptying by squeezing this
Chamber changes the volume of the variable cavity so that the air inside variable cavity is discharged, simultaneously because the variable cavity is using soft
Material, variable cavity can be attracted with lug 211 under the action of external pressure.In order to ensure firmly to be attracted, often
One or more actuation connectors can be set in a lug actuation portion 122.In order to easily manufactured, in the embodiment of the present application, inhale
Splice grafting head could be provided as one.
When carrying out weld strength detection, the lug actuation portion 122 in welding detection device 100 and battery mould can be used
Lug 211 in group is attracted connection one by one.It can be by squeezing above-mentioned variable chamber so that detection unit 102 passes through variable chamber
Room is connected with lug 211, then determines that each variable chamber with after the actuation connection of lug 211, can pass through and detect plate body 101
Apply the pulling force far from battery modules, battery modules are fixed in advance, and the pulling force being applied on detection plate body 101 can be by every
A lug actuation portion 122 applies the strength far from battery modules to lug 211.If lug 211 connect jail with battery cell 200
Gu lug 211 would not be detected unit 102 and be pulled away from battery cell 200.If lug 211 is not welded with battery cell 200
Securely, situations such as there are rosin joints, under the pulling force effect of detection unit 102, such lug 211 not being connected firmly will
It is pulled away from battery cell 200, is disconnected with the electrode of battery cell 200.Staff can have found the lug of not prison welding
211, so as to carry out the subsequent operations such as repair welding.
Detailed, in another embodiment specific implementation mode, lug actuation portion 122 connects including at least one magnetic attracting
Head, the magnetic attracting connector include at least one magnetic patch for being positioned close to 211 side of the lug, and the magnetic attracting connects
Head is connect by the magnetic patch with 211 magnetic attracting of the lug.
In realizing connection procedure of the lug actuation portion 122 with battery cell 200 using atmospheric pressure using variable chamber,
Need first the opening by variable chamber be bonded with lug 211 closely, then to variable chamber apply pressure.Such attracting process is such as
Fruit occurs being attracted untight situation, is just difficult to carry out the detection of weld strength.In view of this, being connect by the way that magnetic attracting is arranged
Head, using magnetic attracting connector magnetic attracting act on, when carrying out weld strength detection, determine detection unit 102 and
After the position of lug 211 is corresponding, passes through control and detect plate body 101 so that detection unit 102 is close to lug 211, in lug
After actuation portion 122 is in contact with lug 211, magnetic attracting connector can be with 211 magnetic attracting of lug.Battery modules are assembling
In the process, pole piece 201 can select nickel plating or other ferromagnetic metals, can be real by the magnetic attracting of magnetic attracting connector
The quick connection of existing detection unit 102 and lug 211, without realizing lug actuation portion 122 and pole by the extruding of variable chamber
The connection of ear 211, and connected by way of magnetic attracting more reliable, it does not appear in and a battery modules is welded
When the detection of intensity, the case where individual variable chambers are not reliably connected with lug 211.The magnetic patch being arranged on magnetic attracting connector
The size and number of magnetic attraction can be determines according to actual conditions.
In another embodiment specific implementation mode, as shown in fig. 6, the detection unit 102 further includes being set in the connection
Elastic component 123 outside portion 121, one end of the elastic component 123 are abutted with lug actuation portion 122, the elastic component 123
The other end is abutted with the detection plate body 101.In the assembling process of battery modules, the electrode of each battery cell 200 will not
Absolute is in the same plane, it may appear that feelings of the electrode for the battery cell 200 having less than the electrode of other battery cells 200
Condition, at this point, lug actuation portion 122 in detection unit corresponding with the lower battery cell 200 in the position 102 may cannot
It is fitted closely with the lug 211 on the battery cell 200, lug actuation portion 122 also just can not be with the 211 attracted company of lug
It connects, the detection of weld strength cannot be carried out.By the way that elastic component 123 is arranged, the interconnecting piece 121 of detection unit 102 may be used soft
Material, under the elastic reaction of elastic component 123, which can occur a degree of elongation.Plate body will detected
It, can be close by first applying to detection plate body 101 when multiple detection units 102 on 101 are all connected with corresponding lug 211
The pressure of battery modules so that all detection units 102 on detection plate body 101 can connect with corresponding lug 211
It touches.Plane is higher than the connection in the 200 corresponding detection unit 102 of battery cell of other 200 electrodes of battery cell where electrode
Under the elastic force effect of elastic component 123 certain compression occurs for portion 121, so that all detection units 102 can be with
Corresponding lug 211 is bonded closely, so as to more easily carry out the detection of weld strength.The elastic component 123 can be
Spring or other elastomeric elements, the embodiment of the present application are not intended to limit the concrete form of the elastic component 123.
In another embodiment specific implementation mode, the welding detection device 100 further includes being connected with the detection plate body 101
The driving device connect, the driving device is arranged in the detection side of the plate body 101 far from the detection unit 102, described
Driving device is used to drive the detection plate body 101 to be moved to the direction far from the pole piece 201.In the weldering for carrying out lug 211
It connects in the detection process of intensity, needs first to control detection plate body 101 and moved to the direction close to battery modules, in detection unit
After the completion of 102 connect with corresponding lug 211, it is also necessary to which control detection plate body 101 is moved to the direction far from battery modules again.
The operation that control detection plate body 101 moves can be completed by manual operation, but manual operation is time-consuming and laborious, less efficient.
In the embodiment of the present application, by the way that driving device is arranged, detection plate body 101 is driven to move by driving device, which can
As a source of power, detection plate body 101 can be driven to move by driving device using motors such as linear motors, improve welding
The efficiency of intensity detection.
In the embodiment of the present application, multiple connecting holes, the interconnecting piece are also provided on the detection plate body 101
121 dismountable settings are in the connecting hole.Since 200 distribution form of battery cell in different battery modules is different,
The position of battery cell 200 in different battery modules may have difference, in order to enable welding detection device 100 can fit
Different battery modules are answered, detection unit 102 can removably setting be realized in the connecting hole by stating interconnecting piece 121
It is connected or separated with detection plate body 101, when needing to adjust 102 position of detection unit, by detection unit 102 from connecting hole
It takes out, then is fixed to predetermined position, realize that welding detection device 100 can be adapted for the battery modules of different size.
In another embodiment specific implementation mode, the detection unit 102 further includes felt pad, and the felt pad is arranged in institute
State the side that 211 interconnecting piece 121 of lug is in contact with the lug 211.Or felt pad setting is close in the magnetic patch
The side of the lug 211.Since battery electrode, pole piece 201 are all made of conductive material in battery modules, welding inspection is being used
When survey device 100 is detected, it is easy to phenomena such as short circuit occur, to be damaged to battery modules.By in lug 211
Felt pad is arranged in the side that interconnecting piece 121 is in contact with lug 211, can be to avoid welding detection device 100 in battery modules
Battery cell 200 interfere, ensure weld strength detection process in safety.
In conclusion welding detection device 100 provided by the embodiments of the present application, is examined by being arranged on detection plate body 101
Unit 102 is surveyed, detection unit 102 can be attached by lug actuation portion 122 and the lug 211 on pole piece 201, is being attracted
The pulling force that the electrode far from battery cell 200 can be applied after connection to lug 211 by detection plate body 101, to realization pair
The detection of 211 weld strength of lug.The welding detection device 100 is simple in structure, easy to operate, will not butt welding in detection process
The lug 211 for connecing completion damages, and can be detected simultaneously to multiple lugs 211 in battery modules, detection effect
Rate higher.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should be noted that：Similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and is explained.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of welding detection device, which is characterized in that the bonding strength for detecting lug and battery cell in battery modules,
The battery modules include multiple battery cells and at least one pole piece, and the multiple and battery is provided on the pole piece
The matched lug of single phase, the pole piece are connected by the lug with the battery cell, the welding detection device packet
It includes：
Detect plate body；
Multiple detection units on the detection plate body are set, and the detection unit matches with the lug, the detection
Unit includes the interconnecting piece and be arranged in the lug actuation portion of the interconnecting piece other end, institute that one end is connect with the detection plate body
Lug actuation portion is stated to connect for being attracted with the lug.
2. welding detection device according to claim 1, which is characterized in that lug actuation portion includes at least one suction
Splice grafting head, the actuation connector include at least one variable cavity, and the opening of the variable cavity is positioned close to the lug
Side.
3. welding detection device according to claim 1, which is characterized in that the detection unit further includes felt pad, institute
Felt pad is stated to be arranged in the side that the lug interconnecting piece is in contact with the lug.
4. welding detection device according to claim 1, which is characterized in that lug actuation portion includes at least one magnetic
Property be attracted connector, the magnetic attracting connector includes at least one magnetic patch for being positioned close to the lug side, the magnetism
Connector is attracted to connect with the lug magnetic attracting by the magnetic patch.
5. welding detection device according to claim 4, which is characterized in that the detection unit further includes felt pad, institute
Felt pad is stated to be arranged in the magnetic patch close to the side of the lug.
6. welding detection device according to claim 1, which is characterized in that the detection unit further include be set in it is described
Elastic component outside interconnecting piece, one end of the elastic component are abutted with lug actuation portion, the other end of the elastic component and institute
Detection plate body is stated to abut.
7. welding detection device according to claim 1, which is characterized in that the welding detection device further include with it is described
One far from the detection unit in the detection plate body is arranged in the driving device that detection plate body is connected, the driving device
Side, the driving device are used to drive the detection plate body to be moved to the direction far from the pole piece.
8. according to the welding detection device described in claim 1 to 7 any one, which is characterized in that set on the detection plate body
Multiple connecting holes are equipped with, the interconnecting piece is removably arranged in the connecting hole.
9. welding detection device according to claim 8, which is characterized in that the connecting hole is threaded hole, the connection
The stud to match with the threaded hole is provided in portion.
10. a kind of welding system, which is characterized in that including the welding detection device described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810439355.9A CN108489813A (en) | 2018-05-09 | 2018-05-09 | Welding detection device and welding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810439355.9A CN108489813A (en) | 2018-05-09 | 2018-05-09 | Welding detection device and welding system |
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| Publication Number | Publication Date |
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| CN108489813A true CN108489813A (en) | 2018-09-04 |
Family
ID=63354317
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810439355.9A Pending CN108489813A (en) | 2018-05-09 | 2018-05-09 | Welding detection device and welding system |
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| CN109580356A (en) * | 2019-01-22 | 2019-04-05 | 华霆（合肥）动力技术有限公司 | Weld strength detection method and system |
| CN112345346A (en) * | 2020-10-29 | 2021-02-09 | 广东技术师范大学 | Clamp for testing welding tension of battery cell |
| CN112985984A (en) * | 2020-12-14 | 2021-06-18 | 系统电子科技（镇江）有限公司 | Many electric core solder joints quality detection device |
| CN113497309A (en) * | 2021-08-02 | 2021-10-12 | 安徽和鼎机电设备有限公司 | Lithium battery electrode series or parallel assembling and welding device |
| CN113670704A (en) * | 2021-08-27 | 2021-11-19 | 山东精工电源科技有限公司 | Method for detecting spot welding and false welding of energy storage battery pack and detection device used by same |
| CN114034575A (en) * | 2021-10-08 | 2022-02-11 | 珠海华冠科技股份有限公司 | Battery welding detection mechanism and battery welding detection method |
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| CN109580356B (en) * | 2019-01-22 | 2021-09-17 | 华霆（合肥）动力技术有限公司 | Welding strength detection method and system |
| CN112345346A (en) * | 2020-10-29 | 2021-02-09 | 广东技术师范大学 | Clamp for testing welding tension of battery cell |
| CN112345346B (en) * | 2020-10-29 | 2023-12-08 | 广东技术师范大学 | Clamp for testing welding tension of battery cell |
| CN112985984A (en) * | 2020-12-14 | 2021-06-18 | 系统电子科技（镇江）有限公司 | Many electric core solder joints quality detection device |
| CN113497309A (en) * | 2021-08-02 | 2021-10-12 | 安徽和鼎机电设备有限公司 | Lithium battery electrode series or parallel assembling and welding device |
| CN113670704A (en) * | 2021-08-27 | 2021-11-19 | 山东精工电源科技有限公司 | Method for detecting spot welding and false welding of energy storage battery pack and detection device used by same |
| CN114034575A (en) * | 2021-10-08 | 2022-02-11 | 珠海华冠科技股份有限公司 | Battery welding detection mechanism and battery welding detection method |
| CN114034575B (en) * | 2021-10-08 | 2023-11-21 | 珠海华冠科技股份有限公司 | Battery welding detection mechanism and battery welding detection method |
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