CN206208421U - A kind of utilization foil gauge determines the device of battery core degrees of expansion - Google Patents
A kind of utilization foil gauge determines the device of battery core degrees of expansion Download PDFInfo
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- CN206208421U CN206208421U CN201621246992.7U CN201621246992U CN206208421U CN 206208421 U CN206208421 U CN 206208421U CN 201621246992 U CN201621246992 U CN 201621246992U CN 206208421 U CN206208421 U CN 206208421U
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- battery core
- foil gauge
- expansion
- bolt
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Abstract
The utility model is related to a kind of utilization foil gauge to determine the device of battery core degrees of expansion, including bolt, nut, foil gauge, measurement apparatus and rigid fixture；Bolt hole and battery core installation region are provided with two panels rigidity fixture；Mutual corresponding two bolt hole lines pass through battery core installation region；Foil gauge arrangement area is provided with bolt, foil gauge is arranged on foil gauge arrangement area and is connected with measurement apparatus.In the technical solution of the utility model, battery core is acted when expanding to rigid fixture, the bolt of rigid fixture is deformed upon in the presence of expansive force, cause the foil gauge deformation being arranged on the bolt, determine its deformation by the resistance variations of measuring strain piece, and then determine bolt deformation and then determine battery core degrees of expansion, be can determine according to the degrees of expansion and answered between battery core and battery core or battery core and housing reserving gaps size.Corresponding bolt line passes through battery core installation region, by corresponding line grid, can specifically determine the degrees of expansion of battery core diverse location.
Description
Technical field
The utility model belongs to field of batteries, and in particular to a kind of utilization foil gauge determines the device of battery core degrees of expansion.
Background technology
Electric automobile industry development was swift and violent in recent years, and electric automobile course continuation mileage is constantly broken through, with stylish problem
Continuously emerge, battery system can safe handling be increasingly becoming maximum hidden danger.There is chemistry in charge and discharge process inside battery
Reaction, if there is impurity in electrolyte, especially water, will occur vigorous reaction and discharge gas in battery, cause battery
Expansion, and in charge and discharge process battery temperature raise be also cell expansion major reason.Case swells may result in electricity
The assembling failure of pond module, cause battery or module cannot normal work, when expansive force reaches back casing rupture electrolysis to a certain degree
Mass flow goes out, and may cause the major safety problems such as burning and blast.For cell expansion problem, existing battery and module generally make
This is prevented with the design of reserved certain interval, and the size in gap is then to design by rule of thumb, the survey of cell expansion degree
Amount method and device missing, fails to accomplish reasonable at the beginning of design, therefore it is battery and mould to be badly in need of the corresponding device of exploitation
The design of group provides theoretical foundation.
Utility model content
For the problems of in the prior art, the purpose of this utility model is to provide a kind of to determine using foil gauge
The device of battery core degrees of expansion, the expansive force produced when can will determine battery core discharge and recharge by the technical scheme, is existing
The design of battery and module preset clearance size provides foundation.
To reach above-mentioned utility model purpose, the technical solution of the utility model is as follows：
A kind of utilization foil gauge determines the device of battery core degrees of expansion, including bolt, nut, foil gauge, measurement apparatus and
The two panels rigidity fixture of mutual cooperation；Battery core installation region is provided between the rigid fixture；Rigid fixture described in two panels
Bolt hole is provided with corresponding position；Each bolt hole has another bolt hole to correspond to therewith on same rigid fixture, phase
The line of mutual corresponding two bolts hole passes through the battery core installation region；Be located on the bolt rigid fixture described in two panels it
Between part be provided with foil gauge arrangement area, the foil gauge is arranged in foil gauge arrangement area and connects with measurement apparatus
Connect.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, and the rigid fixture sets four head
The four edges that tail is sequentially connected, to be separately positioned on the rigid fixture relative for mutual corresponding two bolts hole on same rigid fixture
Both sides on.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, at least one on the rigid fixture
Set on bar side and be no less than 2 bolts hole.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, in each edge of the rigid fixture
It is respectively provided with no less than 2 bolts hole.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, and the edge of the rigid fixture is set
The extending seat at the edge is stretched out, the bolt hole described in is provided with each extending seat.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, the edge of the battery core installation region
It is provided with spacing draw-in groove.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, and the rigid fixture lower end is provided with
Clip leg.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, bolt head and corresponding rigid fixture
Between be provided with pad.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, and the measurement apparatus are resistance measurement
Device or deformeter.
Further, above-mentioned utilization foil gauge determines the device of battery core degrees of expansion, and the strain gauge adhesion is answered described
Become in piece arrangement area.
The utility model has the advantages that：
In the technical solution of the utility model, battery core is acted when expanding to rigid fixture, and the bolt of rigid fixture exists
Deformed upon in the presence of expansive force, cause the foil gauge deformation being arranged on the bolt, by the resistance of measuring strain piece
Change determines its deformation, and the deflection is identical with bolt deformation, and then can determine that battery core degrees of expansion, according to the degrees of expansion energy
Enough determine to answer reserving gaps size between battery core and battery core or battery core and housing.Corresponding bolt line passes through battery core installation region,
By the corresponding line grid, the degrees of expansion of battery core diverse location can be specifically determined.
Brief description of the drawings
Fig. 1 is the structural representation of the device that the utility model determines battery core degrees of expansion using foil gauge；
Fig. 2 is that the schematic diagram of battery core expanding position is determined using said apparatus in the utility model specific embodiment.
In above-mentioned accompanying drawing, 1, rigid fixture；2nd, battery core pole；3rd, foil gauge；4th, spacing draw-in groove；5th, bolt；6th, nut；7、
Pad；8th, clip leg；9th, tape test sample；10th, extending seat.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the utility model provides the device that a kind of utilization foil gauge determines battery core degrees of expansion, using electricity
Core expansive force causes the foil gauge deformation being attached on bolt 5, and battery core degrees of expansion is determined by being reached to foil gauge measurement
Purpose.The device of this specific embodiment includes the two panels rigidity of bolt 5, nut 6, foil gauge 3, measurement apparatus and mutual cooperation
Fixture 1；Battery core installation region is set between rigid fixture 1；Spiral shell is provided with the corresponding position of rigid fixture 1 described in two panels
Keyhole；Each bolt hole has another bolt hole to correspond to therewith on same rigid fixture 1, the company of mutual corresponding two bolts hole
Line passes through the battery core installation region；The part being located on the bolt 5 between rigid fixture 1 described in two panels is provided with foil gauge
Arrangement area, the foil gauge 3 is arranged in the foil gauge arrangement area and is connected with measurement apparatus.The rigid fixture 1 is set
There are the four edges that four head and the tail are sequentially connected, preferably rectangular, mutually corresponding two bolts hole difference on same rigid fixture 1
It is arranged on the relative both sides of the rigid fixture 1.The measurement apparatus are electric resistance measuring apparatus or deformeter.In the present embodiment
The measurement apparatus are that electric resistance measuring apparatus realize battery or mould by the cooperation of bolt 5, nut 6 and the rigid upper bolt hole of fixture 1
Group fix, it is ensured that contacted between battery or module and supporting rigid fixture 1, to each bolt 5 apply same torque after in spiral shell
The surface mount foil gauge 3 of bolt 5, charge and discharge process battery core inside chemically reacts, and battery or module expand and lead to expansive force
Cross shell and pass to rigid fixture 1, clamping two pieces of bolts of fixture 5 can then produce certain deformation, cause and be pasted onto on bolt 5
Each group strains the change of sheet resistance values, the resistance value of foil gauge 3 everywhere can be converted into strain by deformeter, measures swollen with this
The size of expansive force simultaneously determines that where degrees of expansion is maximum.Charged for ease of battery or module, the battery electrode column of the rigid fixture 1
Place reserves charging space of lines.
Based on such scheme, for the comparing of each several part degrees of expansion in further determining that battery or module, this practicality is new
The technical scheme of type also has following feature：Set at least in a line on rigid fixture 1 and be no less than 2 bolts hole.It is described
It is respectively provided with each edge of rigid fixture 1 no less than 2 bolts hole.In this way, due on both sides relative on same rigid fixture 1
Bolt hole correspond, and the one-to-one bolt hole line pass through battery core installation region, then for installed in described
The battery or module of battery core installation region, pass through with a plurality of corresponding bolt hole line, and comparing should on each corresponding bolt 5
Become the resistance of piece 3, determine the position of battery corresponding to the intersection point of maximum intersecting two line of degrees of expansion or module i.e.
It is the position that degrees of expansion is maximum.
Fig. 2 provides a kind of specific embodiment, 16 bolts hole has been uniformly arranged at the edge of rigid fixture 1, according to above-mentioned
It is a-p by being numbered to foil gauge in figure 3 clockwise after mode installs bolt 5, nut 6 and foil gauge 3, wherein foil gauge d,
Bolt 5 where h, l and p is separately mounted to four angles of rigid fixture 1, and remaining bolt 5 is evenly distributed on the 4 of rigid fixture 1
On individual side.Corresponding bolt hole line a-k, b-j, c-i, d-h, o-e, n-f, m-g, l-p both pass through battery core installation region.In order to
More preferably determine deformation position, it is to avoid the influence of adjacent bolt 5, the edge of the rigid fixture 1 sets and stretches out prolonging for the edge
Seat 10 is stretched, a bolt hole is provided with each extending seat 10.The edge of the battery core installation region is provided with spacing draw-in groove 4,
Prevent battery or module movement in measurement process.Pad 7 is provided between bolt head and corresponding rigidity fixture 1, is easy to spiral shell
Female 6 apply torsion.
Determine that the method that battery or module expand is as follows using device in this specific embodiment：
The installation method of rigid fixture 1 and bolt 5 is, sample to be tested 9 (battery or its in groups module) has been inserted into two pieces just
Property fixture 1 spacing draw-in groove 4 in, applying certain power from both sides makes housing on the outside of sample be fit together with fixture inwall, sharp
It is placed in the experiment plane of stabilization with the clip leg 8 of the bottom of rigid fixture 1, by bolt 5 through this two panels rigidity correspondence of fixture 1
Bolt hole after nut 6 is screwed in bolt 5 (being each equipped with pad 7 on bolt 5 and nut 6 in the present embodiment) respectively, then make
It is the pretightning force that each bolt 5 applies same torque with torque wrench.
The method of attaching step of foil gauge 3 is bolt 5 to be cleared up using alcohol cotton stick, in the bolt 5 after the dry tack free of bolt 5
Foil gauge arrangement area surface uniform application strain gauge alite paste, the both sides of foil gauge 3 are gently clamped with tweezers, be attached to test specimen
Smear alite paste position, after to be bonded dose of drying, binding post glue is bonded at foil gauge 3 and draws line front end, firmly after
The lead-in of foil gauge 3 and output line are welded on leading-in terminal and lead-out terminal, are connected using High Precision Multimeter after the completion of welding
Connect that lead-in conductor tests whether to connect with output lead and whether foil gauge resistance deviates nominal resistance.
Battery and module degrees of expansion method of testing are that foil gauge 3 is pasted after finishing and for positive and negative electrode cable to be welded on battery core
On pole 2, and the cable is connected to test power supply.Connect circuit carries out charge and discharge to it, and being used during charge and discharge should
Become strain and environment temperature, humidity change that instrument constantly reads and records foil gauge 3, until charge and discharge are completed.Determined before experiment
The elastic modelling quantity of bolt 5 is E, foil gauge 3 paste it is good in the case of bolt 5 and the foil gauge 3 obtained by deformeter strain
It is equal, ε is designated as, the expansive force of battery or module is designated as σ during discharge and recharge, then can draw each bolt 5 by generalized Hooke law
Suffered stress σ=E ε, show that respective strain obtains suffered on bolt 5 answering with this by foil gauge a and foil gauge k change in resistance
Power, takes the average expansion power that the stress average value of two bolt 5 can obtain battery or module on line a-k, can similarly try to achieve respectively
The battery of line b-j, c-i, d-h, o-e, n-f, m-g, l-p or the expansive force of module, thereby determine that battery in charge and discharge process
Or module where degrees of expansion is maximum.
According to battery or the degrees of expansion at each position of module, the seam of suitable size is reserved when can make battery of the same type
Gap.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this practicality to the utility model
New spirit and scope.So, if belonging to the utility model claim to these modifications of the present utility model and modification
And its within the scope of equivalent technology, then the utility model is also intended to comprising these changes and modification.
Claims (10)
1. a kind of utilization foil gauge determines the device of battery core degrees of expansion, it is characterised in that including bolt (5), nut (6), answer
Become two panels rigidity fixture (1) of piece (3), measurement apparatus and mutual cooperation；Battery core installation is provided between the rigid fixture (1)
Region；Bolt hole is provided with the corresponding position of rigid fixture (1) described in two panels；Each on same rigid fixture (1)
Bolt hole has another bolt hole to correspond to therewith, and the line of mutual corresponding two bolts hole passes through the battery core installation region；
The part being located on the bolt (5) between rigid fixture (1) described in two panels is provided with foil gauge arrangement area, the foil gauge
(3) it is arranged in the foil gauge arrangement area and is connected with measurement apparatus.
2. the device of battery core degrees of expansion is determined using foil gauge as claimed in claim 1, it is characterised in that the rigidity folder
Tool (1) sets the four edges that four head and the tail are sequentially connected, and mutual corresponding two bolts hole set respectively on same rigid fixture (1)
Put on the relative both sides of the rigid fixture (1).
3. the device of battery core degrees of expansion is determined using foil gauge as claimed in claim 2, it is characterised in that the rigidity folder
Set at least in a line on tool (1) and be no less than 2 bolts hole.
4. the device of battery core degrees of expansion is determined using foil gauge as claimed in claim 3, it is characterised in that the rigidity folder
Have in each edge of (1) and be respectively provided with no less than 2 bolts hole.
5. the device of battery core degrees of expansion is determined using foil gauge as claimed in claim 4, it is characterised in that the rigidity folder
The edge for having (1) sets the extending seat (10) for stretching out the edge, and the bolt hole described in is provided with each extending seat.
6. the utilization foil gauge as described in claim 1-5 is any determines the device of battery core degrees of expansion, it is characterised in that described
The edge of battery core installation region is provided with spacing draw-in groove (4).
7. the utilization foil gauge as described in claim 1-5 is any determines the device of battery core degrees of expansion, it is characterised in that described
Rigid fixture (1) lower end is provided with clip leg (8).
8. the utilization foil gauge as described in claim 1-5 is any determines the device of battery core degrees of expansion, it is characterised in that bolt
Pad (7) is provided between head and corresponding rigid fixture (1).
9. the utilization foil gauge as described in claim 1-5 is any determines the device of battery core degrees of expansion, it is characterised in that described
Measurement apparatus are electric resistance measuring apparatus or deformeter.
10. the utilization foil gauge as described in claim 1-5 is any determines the device of battery core degrees of expansion, it is characterised in that institute
Foil gauge (3) is stated to be pasted onto in the foil gauge arrangement area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621246992.7U CN206208421U (en) | 2016-11-18 | 2016-11-18 | A kind of utilization foil gauge determines the device of battery core degrees of expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621246992.7U CN206208421U (en) | 2016-11-18 | 2016-11-18 | A kind of utilization foil gauge determines the device of battery core degrees of expansion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206208421U true CN206208421U (en) | 2017-05-31 |
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ID=58750551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621246992.7U Active CN206208421U (en) | 2016-11-18 | 2016-11-18 | A kind of utilization foil gauge determines the device of battery core degrees of expansion |
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| Country | Link |
|---|---|
| CN (1) | CN206208421U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595914A (en) * | 2016-11-18 | 2017-04-26 | 常州普莱德新能源电池科技有限公司 | Method and device for determining cathode mix swelling degree by using strain gauges |
| CN109342825A (en) * | 2018-11-12 | 2019-02-15 | 中电科仪器仪表有限公司 | A kind of coaxial resonance test device and test method |
| CN111829737A (en) * | 2019-04-18 | 2020-10-27 | 中国科学院宁波材料技术与工程研究所 | Air tightness detection method of solid oxide fuel cell |
-
2016
- 2016-11-18 CN CN201621246992.7U patent/CN206208421U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595914A (en) * | 2016-11-18 | 2017-04-26 | 常州普莱德新能源电池科技有限公司 | Method and device for determining cathode mix swelling degree by using strain gauges |
| CN109342825A (en) * | 2018-11-12 | 2019-02-15 | 中电科仪器仪表有限公司 | A kind of coaxial resonance test device and test method |
| CN111829737A (en) * | 2019-04-18 | 2020-10-27 | 中国科学院宁波材料技术与工程研究所 | Air tightness detection method of solid oxide fuel cell |
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