CN208239203U - welding detection device and welding system - Google Patents
welding detection device and welding system Download PDFInfo
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- CN208239203U CN208239203U CN201820689248.7U CN201820689248U CN208239203U CN 208239203 U CN208239203 U CN 208239203U CN 201820689248 U CN201820689248 U CN 201820689248U CN 208239203 U CN208239203 U CN 208239203U
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Abstract
The utility model provides a kind of welding detection device and welding system, is related to welding technology field.The welding detection device is by being arranged detection unit on detection plate body, detection unit can be attached by tab actuation portion and the tab on pole piece, the pulling force of the electrode far from battery core can be applied to tab by detection plate body after being attracted connection, to realize the detection to tab welding intensity.The welding detection device structure is simple, easy to operate, will not damage in the detection process to soldered tab, and can detect simultaneously to multiple tabs in battery modules, and detection efficiency is higher.
Description
Technical field
The utility model relates to welding technology fields, in particular to a kind of welding detection device and welding system.
Background technique
Battery modules can be powered to other devices, such as can be used as the power resources of electric car.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 is bonded with pole piece not will lead to occur rosin joint or weldering in welding process closely
Phenomena such as wearing.
Utility model content
In view of this, the present invention provides a kind of welding detection device and welding systems, can solve the above problems.
In detail, the technical scheme that the utility model is provided is as follows:
A kind of welding detection device, for detecting the bonding strength of tab and battery cell in battery modules, the battery
Mould group includes multiple battery cells and at least one pole piece, is provided on the pole piece multiple with the battery cell phase
The tab matched, the pole piece are connected by the tab 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 tab, described
Detection unit includes the interconnecting piece and the tab actuation that the interconnecting piece other end is arranged in that one end is connect with the detection plate body
Portion, tab actuation portion are used to be attracted with the tab and connect.
Further, tab actuation portion includes that at least one is attracted 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 tab.
Further, the detection unit further includes felt pad, and the felt pad is arranged in the tab interconnecting piece and institute
State the side that tab is in contact.
Further, tab 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 tab side, the magnetic attracting connector passes through the magnetic patch and the tab 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 tab 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
The detection side of the plate body far from the detection unit is arranged in dynamic device, 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 in described
In connecting hole.
Further, the connecting hole is threaded hole, is provided with the spiral shell to match with the threaded hole on the interconnecting piece
Column.
The utility model additionally provides a kind of welding system, 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 tab actuation portion and the tab on pole piece, can be applied by detection plate body to tab after being attracted connection
Add the pulling force of the electrode far from battery core, to realize the detection to tab welding intensity.The welding detection device structure is simple, behaviour
Make simplicity, soldered tab will not be damaged in the detection process, and can be simultaneously to more in battery modules
A tab is detected, and detection efficiency is higher.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the schematic diagram after welding detection device provided by the embodiment of the utility model is combined with battery modules.
Fig. 2 is that the connection of the detection unit and battery cell in welding detection device provided by the embodiment of the utility model is shown
It is intended to.
Fig. 3 is the schematic diagram of pole piece provided by the embodiment of the utility model.
Fig. 4 is the enlarged diagram of the part I in Fig. 3.
Fig. 5 is a kind of schematic diagram of detection unit provided by the embodiment of the utility model.
Fig. 6 is the schematic diagram of another detection unit provided by the embodiment of the utility model.
Icon: 100- welding detection device；200- battery cell；201- pole piece；211- tab；101- detects plate body；
102- detection unit；121- interconnecting piece；122- tab actuation portion；123- elastic component.
Specific embodiment
Below in conjunction with attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of the selected embodiment of the utility model.Based on the utility model
Embodiment, those skilled in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile it is practical new at this
In the description of type, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relatively important
Property.
Battery pack can be used as the power resources of electric car, may include multiple battery modules in a battery pack, often
It 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 preset 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 guaranteed by being welded to connect
Pole piece can be reliably connected with battery core.Multiple tabs can be arranged 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 tab 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, if there is vibration or other operating conditions, tab and battery core are not connected firmly and will lead to 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 tab also can cause the internal resistance of battery core to increase, and so that battery core is easy to appear 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 tab completed on pole piece is connected with electrode, needs
The bonding strength of tab is detected, determine that tab 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 tab 211 and battery cell 200, the battery modules include multiple battery cells 200 and at least one
Pole piece 201, multiple tabs 211 to match with the battery cell 200 are provided on the pole piece 201, and the pole piece 201 is logical
The tab 211 is crossed to be connected with the battery cell 200.
The welding detection device 100 includes detection plate body 101 and detection unit 102.
Detecting plate body 101 can be using materials such as rigid plastics, 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, battery modules can be using cylindrical battery as battery
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 tab 211, institute
Stating detection unit 102 includes the interconnecting piece 121 and be arranged another in the interconnecting piece 121 that one end is connect with the detection plate body 101
The tab actuation portion 122 of one end, tab actuation portion 122 are used to be attracted with the tab 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 guarantee when the weld strength to tab 211 detects, detection unit 102 can closely be inhaled with tab 211
It closes.
It is detailed, in a specific embodiment, as shown in figure 5, tab actuation portion 122 includes at least one suction
Splice grafting head, the actuation connector includes at least one variable cavity, and the opening of the variable cavity is positioned close to the tab
211 side.Variable cavity can be made using rubber or other soft materials in 211 connector of tab, so that the variable cavity
The volume of chamber can change, after the opening of the variable cavity and tab 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 tab 211 under the action of external pressure.In order to guarantee firmly to be attracted, often
One or more actuation connectors can be set in a tab actuation portion 122.In order to easily manufactured, in the embodiment of the present application, inhale
Splice grafting head can be set to one.
When carrying out weld strength detection, the tab actuation portion 122 in welding detection device 100 and battery mould can be used
Tab 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 tab 211, then determines that each variable chamber with after the actuation connection of tab 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 tab actuation portion 122 applies the strength far from battery modules to tab 211.If tab 211 connect jail with battery cell 200
Gu tab 211 would not be detected unit 102 and be pulled away from battery cell 200.If tab 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 tab 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 tab of not prison welding
211, so as to carry out the subsequent operations such as repair welding.
Detailed, in another embodiment specific implementation mode, tab actuation portion 122 includes that at least one magnetic attracting connects
Head, the magnetic attracting connector include at least one magnetic patch for being positioned close to 211 side of tab, and the magnetic attracting connects
Head is connect by the magnetic patch with 211 magnetic attracting of tab.
In the connection procedure for realizing tab actuation portion 122 and battery cell 200 using atmospheric pressure using variable chamber,
It needs first to be bonded the opening of variable chamber closely with tab 211, then applies pressure to variable chamber.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, determined detection unit 102 and
After the position of tab 211 is corresponding, plate body 101 is detected by control, so that detection unit 102 is close to tab 211, in tab
After actuation portion 122 is in contact with tab 211, magnetic attracting connector can be with 211 magnetic attracting of tab.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 tab 211, without realizing tab 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 tab 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
One end of elastic component 123 outside portion 121, the elastic component 123 is abutted with tab 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 lower than the electrode of other battery cells 200
Condition, at this point, tab actuation portion 122 in detection unit 102 corresponding with the lower battery cell 200 in the position may cannot
It is fitted closely with the tab 211 on the battery cell 200, tab actuation portion 122 also just can not be with the attracted company of tab 211
It connects, not can be carried out the detection of weld strength.By the way that elastic component 123 is arranged, the interconnecting piece 121 of detection unit 102 can use soft
Material, under the elastic reaction of elastic component 123, which can occur a degree of elongation.It will test plate body
It, can be close by first applying to detection plate body 101 when multiple detection units 102 on 101 are all connected with corresponding tab 211
The pressure of battery modules, so that all detection units 102 on detection plate body 101 can connect with corresponding tab 211
Touching.Plane is higher than the connection in the corresponding detection unit 102 of battery cell 200 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 tab 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 detection side of the plate body 101 far from the detection unit 102 is arranged in the driving device, described
Driving device is used to that the detection plate body 101 to be driven to move to the direction far from the pole piece 201.In the weldering for carrying out tab 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 tab 211, it is also necessary to which control detection plate body 101 is mobile 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, and efficiency is lower.?
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
With connecting or separating for detection plate body 101, when needing to adjust 102 position of detection unit, unit 102 will test 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 tab is in contact with the tab 211.Or felt pad setting is close in the magnetic patch
The side of the tab 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 being shorted, to be damaged to battery modules.By in tab 211
Felt pad is arranged in the side that interconnecting piece 121 is in contact with tab 211, can be to avoid welding detection device 100 in battery modules
Battery cell 200 interfere, guarantee 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 tab actuation portion 122 and the tab 211 on pole piece 201, be attracted
The pulling force that the electrode far from battery cell 200 can be applied after connection to tab 211 by detection plate body 101, thus realization pair
The detection of 211 weld strength of tab.100 structure of welding detection device is simple, easy to operate, in the detection process will not butt welding
The tab 211 for connecing completion damages, and can detect simultaneously to multiple tabs 211 in battery modules, detection effect
Rate is higher.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.It should be noted that
To: similar label and letter indicate similar terms in following attached drawing, therefore, once determined in a certain Xiang Yi attached drawing
Justice does not need then that it is further defined and explained in subsequent attached drawing.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described with power
Subject to the protection scope that benefit requires.
Claims (10)
1. a kind of welding detection device, which is characterized in that for detecting the bonding strength of tab 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 tab that monomer matches, the pole piece are connected by the tab 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 tab, the detection
Unit includes the interconnecting piece and the tab actuation portion that the interconnecting piece other end is arranged in that one end is connect with the detection plate body, institute
Tab actuation portion is stated to connect for being attracted with the tab.
2. welding detection device according to claim 1, which is characterized in that tab actuation portion includes at least one suction
Splice grafting head, the actuation connector includes at least one variable cavity, and the opening of the variable cavity is positioned close to the tab
Side.
3. welding detection device according to claim 1, which is characterized in that the detection unit further includes felt pad, institute
It states felt pad and the side that the interconnecting piece is in contact with the tab is set.
4. welding detection device according to claim 1, which is characterized in that tab 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 tab side, the magnetism
Connector is attracted to connect by the magnetic patch with the tab magnetic attracting.
5. welding detection device according to claim 4, which is characterized in that the detection unit further includes felt pad, institute
It states felt pad and the magnetic patch is set close to the side of the tab.
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 tab 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 of the detection plate body far from the detection unit is arranged in the driving device that detection plate body is connected, the driving device
Side, the driving device are used to that the detection plate body to be driven to move to the direction far from the pole piece.
8. according to claim 1 to welding detection device described in 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 welding detection device described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820689248.7U CN208239203U (en) | 2018-05-09 | 2018-05-09 | welding detection device and welding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820689248.7U CN208239203U (en) | 2018-05-09 | 2018-05-09 | welding detection device and welding system |
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| Publication Number | Publication Date |
|---|---|
| CN208239203U true CN208239203U (en) | 2018-12-14 |
Family
ID=64582859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820689248.7U Active CN208239203U (en) | 2018-05-09 | 2018-05-09 | welding detection device and welding system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489813A (en) * | 2018-05-09 | 2018-09-04 | 华霆（合肥）动力技术有限公司 | Welding detection device and welding system |
| CN110587175A (en) * | 2019-10-25 | 2019-12-20 | 湖南弘钧电子科技有限公司 | Joint welding quality detection device |
-
2018
- 2018-05-09 CN CN201820689248.7U patent/CN208239203U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489813A (en) * | 2018-05-09 | 2018-09-04 | 华霆（合肥）动力技术有限公司 | Welding detection device and welding system |
| CN110587175A (en) * | 2019-10-25 | 2019-12-20 | 湖南弘钧电子科技有限公司 | Joint welding quality detection device |
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