CN205920201U - Lithium battery short circuit test equipment - Google Patents
Lithium battery short circuit test equipment Download PDFInfo
- Publication number
- CN205920201U CN205920201U CN201620862553.2U CN201620862553U CN205920201U CN 205920201 U CN205920201 U CN 205920201U CN 201620862553 U CN201620862553 U CN 201620862553U CN 205920201 U CN205920201 U CN 205920201U
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- China
- Prior art keywords
- lithium battery
- pressurizing unit
- stationary fixture
- casing
- hot
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Abstract
The utility model provides a lithium battery short circuit test equipment, includes box, mounting fixture, extrusion device, heat flux circulation device and controller, through controller control mounting fixture, extrusion device and the work of heat flux circulation device, mounting fixture include base and fixed lid, the base in be equipped with the heater, the temperature of the lithium cell in the mounting fixture is adjusted to the by heating ware, the extrusion device set up in mounting fixture's top and below the lithium cell test in to mounting fixture of extrusion device combined effect below extrusion device through mounting fixture top and the mounting fixture respectively. The utility model discloses the practicality is strong, and the measuring accuracy is high, and there have the test data that the difference in temperature arouses between the effectual temperature of avoiding the lithium cell and the effective temperature to be not accurate to the influence is to the test and the aassessment of lithium cell security performance, the temperature of is reduced it is poor, improve test effectiveness, practice thrift the energy consumption, avoid the heat energy in the getting into the concentrated relatively, influence test effectiveness.
Description
Technical field
This utility model belongs to lithium battery technical field of measurement and test and in particular to a kind of lithium battery interior short-circuit test equipment.
Background technology
Lithium battery, as a kind of high-effect, environmental protection power storage medium, has deeply been applied to various electronic products, electricity
In power driven tools and means of transportation.But, with the gradually expansion of its range of application, and the volume energy density of single lithium battery is got over
Come higher, capacity is increasing, be increasingly susceptible to more explosion accident, its security performance is increasingly closed by people
Note.Therefore, lithium battery after manufacture, needs to carry out lithium battery to carry out internal short-circuit testing experiment, as a series of in extruding, acupuncture etc.
Safety detection meets safety criterion regulation to determine lithium battery.One kind of lithium battery interior short-circuit test during squeeze test, at present
Conventional testing experiment slowly extrudes battery case using single blunt needle, causes its internal deformation, thus outer to lithium battery
Shape is observed, and the temperature to lithium battery and voltage are acquired judging whether lithium battery interior is short-circuit, with comprehensive test lithium
The internal short-circuit operating mode of battery, thus judge the security performance of lithium battery.Carried out internal short using single blunt needle extruding lithium battery
The method of drive test examination is although be capable of testing effect, but finds in practice, and single blunt needle extruding lithium battery carries out internal short-circuit
The performance of lithium battery can not comprehensively be tested during test, there is certain error in judgement.Further, since the fixation of fixing lithium battery
Fixture can not heat to lithium battery, and therefore, lithium battery can not carry out security performance test to lithium battery under different temperatures environment,
If being controlled to the temperature in test equipment casing using external equipment, but between lithium battery and casing, there is fixation clamp
Tool, so that lithium battery has certain temperature difference with the temperature in casing, affects performance.
Therefore, how to overcome the shortcomings of existing lithium battery interior short-circuit test, become lithium battery technical field of measurement and test anxious
The problem that need to solve.
Content of the invention
In view of this, the technical problems to be solved in the utility model is that a kind of measuring accuracy is high, can real-time control to be measured
The lithium battery interior short-circuit test equipment of lithium battery temperature and energy efficient.
In order to solve above-mentioned technical problem, this utility model adopts following scheme to realize: a kind of lithium battery interior short circuit is surveyed
Examination equipment, including being provided with the casing of air inlet and air outlet, be arranged in casing for placing stationary fixture, the setting of lithium battery
In casing be used for lithium battery is tested pressurizing unit, be arranged on wall box and with the hot fluid circulation connecting in casing
Device and the controller being connected with stationary fixture, pressurizing unit and hot fluid circulation device, control fixation clamp by controller
Tool, pressurizing unit and the work of hot fluid circulation device；Described stationary fixture includes the base being fixed on casing and is arranged on
The fixing lid being mutually matched above base and with base；It is provided with heater in described base, fixation clamp is adjusted by heater
The temperature of the lithium battery in tool；Described pressurizing unit is separately positioned on above and below stationary fixture, positioned at stationary fixture
The pressurizing unit of top is vertical with stationary fixture, and position is corresponding with the position of lithium battery, squeezing below stationary fixture
The quantity of pressure device is more than one, by the pressurizing unit above stationary fixture and the joint of the pressurizing unit below stationary fixture
Effect carries out test test to the lithium battery in stationary fixture.
Wherein, described hot fluid circulation device includes the hot-fluid import being arranged in casing and hot outlets, connects hot-fluid
The hot-fluid pipe of import and hot outlets, the heating element being arranged in hot-fluid pipe and blower fan.
Wherein, the air outlet being located at hot fluid circulation device in described casing is provided with deflector.
Wherein, it is equipped with the instrument connection matching with pressurizing unit position, pressurizing unit in described base and fixing lid
Through instrument connection, testing experiment is carried out to the lithium battery in stationary fixture.
Wherein, it is provided with the testing needle for being tested to lithium battery in described pressurizing unit and be arranged on testing needle
Side is used for the pressure inductor of sensing test needle force；Described testing needle is located at front end and its shapes and sizes of pressurizing unit
Match with the shapes and sizes of instrument connection.
Wherein, the quantity of the pressurizing unit below stationary fixture is one or two.
Wherein, the pressurizing unit below described stationary fixture be one, pressurizing unit be arranged on stationary fixture just under
Side；Pressurizing unit below described stationary fixture is two, is arranged on the pressurizing unit above stationary fixture and stationary fixture
The pressurizing unit of lower section is distributed in y character form structure between being two.
Wherein, described controller is arranged on the side wall of casing, and described controller is pid controller.
Compared with prior art, this utility model has practical, measuring accuracy height, by multiple pressurizing units simultaneously
Extruding li battery shell, the then temperature change according to the li battery shell change after extruding and the lithium battery of collection and voltage
Change information judges to the security performance of lithium battery, can more comprehensively test the internal short-circuit operating mode of lithium battery, carry
High test effect, reduces test error, improves the security performance precision of test lithium battery；Pass through to be provided with stationary fixture simultaneously
Heater carries out real-time adjustment and control to the temperature of lithium battery, optimizes the structure of stationary fixture, can effectively avoid lithium
There is the test data that the temperature difference causes not accurate, thus impact is to lithium battery security performance between the temperature of battery and actual temperature
Test and assessment；By being externally provided with, in casing, the hot fluid circulation fluid that hot fluid circulation device is realized in casing, in equalizing box body
Temperature so that heat energy can be in effectively utilizes and equalizing box body between core stationary fixture temperature, reduce temperature difference, improve
Test effect, energy efficient；It is provided with deflector in the hot-fluid import of hot fluid circulation device, draw to entering the hot-fluid in casing
Lead so that hot-fluid uniformly enters in casing, it is to avoid enter the heat energy Relatively centralized in casing, impact test effect.
Brief description
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the sectional view of embodiment 1.
Fig. 3 is the top view of embodiment 1.
Fig. 4 is the sectional view of the stationary fixture of embodiment 1.
Fig. 5 is the structural representation of the pressurizing unit of embodiment 1.
Fig. 6 is the explosive view of the pressurizing unit of embodiment 1.
Fig. 7 is the sectional view of embodiment 2.
Fig. 8 is the sectional view of the stationary fixture of embodiment 2.
Specific embodiment
In order to allow those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this
Utility model is further elaborated.
Embodiment 1
As shown in Figures 1 to 6, a kind of lithium battery interior short-circuit test equipment, including casing 1, is arranged in casing and is used for
Place the stationary fixture 2 of lithium battery, be arranged on the interior pressurizing unit 3 being used for lithium battery is tested of casing, be arranged on casing
Side wall and with the hot fluid circulation device 4 being connected in casing and be used for controlling stationary fixture, pressurizing unit and hot fluid circulation device
The controller 5 connecting.It is provided with described casing 1 and enter the air inlet in casing for outer gas stream and supply hot-fluid in casing to flow out
The air outlet of casing, realizes the air-flow in casing and outside circulation by air inlet and air outlet.Described controller 5 and fixation
Fixture 2, pressurizing unit 3 and hot fluid circulation device 4 connect, and control stationary fixture 2, pressurizing unit 3 and heat by controller 5
Stream circulating device 4 works, and realizes the internal short-circuit testing experiment to lithium battery to be tested.It is additionally provided with for seeing in described casing
Examine the observation panel of lithium battery extruding change, this observation panel is sealed by implosion guard, it is to avoid lithium battery explodes, cause to explode
Thing flies out outside casing.Described lithium battery is the cylinder class lithium battery of 18650 types.
In order to better control over the temperature of lithium battery, fixed jig interior heater to being fixed in fixed jig
Lithium battery carries out temperature control.Described stationary fixture 2 includes the base 21 being fixed on casing and is arranged on above base 21
And the fixing lid 22 being mutually matched with base；By consolidating that clamping or rotation are connected between described fixing lid 22 and base 21
Fixed.Described base 21 is made up of the little material of thermal deformation, and the bottom of base 21 is provided with the arc opening matching with lithium battery,
Lithium battery is fixed in arc opening.It is provided with heater 211 in described base 21, fixed by heater 211 real-time regulation
The temperature of the lithium battery in fixture 2, realizes the temperature controlled effect of lithium battery.Described base is made up of stainless steel.
In order to preferably gather the temperature of lithium battery, stationary fixture 2 is provided with temperature sensor, this temperature sensor sets
Put in base 21 and fixing lid 22, and temperature sensor is connected with controller 5, by temperature sensor real-time monitoring lithium battery
Temperature, and temperature information is delivered to controller 5.
In order to reduce pressurizing unit, lithium battery is carried out with the interference of external force during testing experiment, improves the mistake of squeeze pressure
Difference, is equipped with, in described base 21 and fixing lid 22, the instrument connection 23 matching with pressurizing unit position, pressurizing unit 3 is worn
Cross instrument connection 23 and testing experiment is carried out to the lithium battery in stationary fixture.
The quantity of described pressurizing unit 3 is two, two pressurizing units 3 be separately positioned on stationary fixture 2 top and
Lower section.One of pressurizing unit is located at directly over stationary fixture 2, and the position of pressurizing unit is corresponding with the position of lithium battery,
And described pressurizing unit is vertical with stationary fixture.Another pressurizing unit 3 is located at immediately below stationary fixture 2, pressurizing unit
Corresponding with the position of the lithium battery and described pressurizing unit in position vertical with stationary fixture so that being just located at stationary fixture
Top is on the same line and vertical with stationary fixture with the pressurizing unit of underface.Two described pressurizing units synchronously move
Dynamic, by the pressurizing unit above stationary fixture and the pressurizing unit synergy below stationary fixture to the lithium in stationary fixture
Battery carries out extruding testing experiment, thus realizing the security performance test of lithium battery to be tested.
Pressurizing unit base that described pressurizing unit includes being arranged on pressurizing unit in casing, pass through motor mounting plate
Be fixed on the reductor of motor on pressurizing unit base and motor connection, shaft coupling, by shaft coupling and reductor company
Nut that the screw mandrel connecing and screw mandrel screw togather, it is arranged on the guide rail of screw mandrel both sides by guide rails assembling plate, is arranged on guide rail side and uses
Displacement sensor in sensing nut displacement is connected with nut and the testing needle fixed plate of movement and test on guide rail
Pressure inductor installing plate that pin fixed plate connects, the pressure inductor 32 being arranged on pressure inductor installing plate, it is arranged on
The guide pillar that pressure inductor both sides are located on pressure inductor installing plate, the bearing being inserted in guide pillar, the company of two bearings of connection
Fishplate bar, the test needle holder being arranged on connecting plate and be fixed on test needle holder on testing needle 31.Described test
Pin is blunt needle.
In order to improve the precise control to compression assemblies, described motor is motor.Step motor drive reductor
Work.Described motor is 20:1 with the speed reducing ratio of reductor, and motor is combined with reductor and can reduce screw mandrel and turn
Dynamic speed.When the slewing rate of screw mandrel reduces, can effectively reduce the speed that moves up and down of nut, realize to testing needle
Control and increase the squeeze pressure of testing needle.The speed minimum of the testing needle in described pressurizing unit can reach
0.01mm/s, the maximum that pressure can reach is 2000n.Because the effect of reductor is so that survey in lithium battery interior short circuit
In examination equipment work process, the slewing rate of screw mandrel and nut can be effectively reduced, increase squeeze pressure controlled range, that is,
The control pressure scope of testing needle is 0～2000n, and the scope of the Bit andits control that testing needle pushes is 0～0.2mm.
Directly over described stationary fixture and underface two pressurizing units in the shapes and sizes of testing needle with set
The shapes and sizes putting the instrument connection 23 in base 21 and fixing lid 22 match, and the position of the position of testing needle and instrument connection
Put to corresponding so that when testing, testing needle passes through instrument connection to extrude li battery shell.
For the temperature in more preferable casing, it is provided with hot fluid circulation device 4 in the side wall of casing, real by hot fluid circulation device
Temperature control in existing casing.Described hot fluid circulation device 4 includes the hot-fluid import 41 being arranged in casing and hot outlets
42nd, hot-fluid pipe 43, the heating element 44 being arranged in hot-fluid pipe and the blower fan 45 of hot-fluid import and hot outlets are connected.Described
Blower fan is arranged on the rear of heating element, by blower fan, the heat energy that heating element distributes is delivered in casing.Position in described casing 1
Air outlet in hot fluid circulation device 4 is provided with deflector 6, and the hot-fluid being produced heated air circulation device 4 by deflector 6 is uniform
Be transported in casing, it is to avoid in casing, local heating or temperature are too high, impact test effect.
Described controller 5 is arranged on the side wall of casing, and described controller 5 is pid controller.Described pid control
Device processed is that existing pid controller is all achievable.
When internal short-circuit testing experiment is carried out to lithium battery, first lithium battery is fixed on the base of stationary fixture, then
Fixing lid 22 is coordinated fixing lithium battery with base 21.The both positive and negative polarity of lithium battery is connected with test equipment respectively, simultaneously in lithium
Battery surface is provided with the temperature inductor being connected with controller and carries out real-time monitoring to the temperature of lithium battery.Set a temperature
Value, described temperature value is the arbitrary value in 58 DEG C～65 DEG C, and now battery performance is more active, and controller controls heater
Work with heating element, and the temperature of Real-time Collection lithium battery, when the temperature of lithium battery reaches setting value, controller controls extruding
Device works.Electric motor starting in pressurizing unit, and drive testing needle to move down.Testing needle slowly extrudes lithium through instrument connection
Battery container, simultaneously controller constantly collect the magnitude of voltage of lithium battery and the temperature change of lithium battery.Testing needle continues to moving down
Dynamic, the displacement of displacement sensor record testing needle movement, observe the change of li battery shell, pressure inductor constantly records test
Pin is squeezed in the pressure value of li battery shell, the temperature change of temperature inductor record lithium battery, the lithium electricity of controller collection simultaneously
Pond be extruded during change in voltage, the temperature change value of the lithium battery being gathered by controller, voltage change, displacement become
Change value and the pressure value of li battery shell, the lithium battery items data message that tester can be gathered by software judges lithium
The security performance of battery, thus realize comprehensively testing the internal short-circuit operating mode of lithium battery.In extrusion process, if testing needle is just
Extruding lithium battery casing, observes li battery shell temperature and raises, and magnitude of voltage is zero, the lithium battery interior after being now extruded is sent out
Raw short circuit, after testing needle removes lithium battery casing, it is so zero that the voltage of lithium battery is appointed, then explanation lithium battery security performance is poor；
If after testing needle pushes maximum displacement, after testing needle extrudes the depth capacity of lithium battery casing, lithium battery observes li battery shell
Temperature raises, and magnitude of voltage is zero, and the lithium battery interior after being now extruded is short-circuited, and testing needle removes lithium battery casing
Afterwards, the voltage of lithium battery is appointed is so zero, then explanation lithium battery security performance is general；If after testing needle pushes maximum displacement, test
After pin extrudes the depth capacity of lithium battery casing, lithium battery is observed li battery shell temperature and is raised, and magnitude of voltage is zero, now by
Lithium battery interior after extruding is short-circuited, and after testing needle removes lithium battery casing, the voltage of the voltage of lithium battery recovers, then say
Bright lithium battery security performance is preferable；If after testing needle pushes maximum displacement, after testing needle extrudes the depth capacity of lithium battery casing,
Lithium battery observes li battery shell temperature change less, and magnitude of voltage is not zero, and the lithium battery interior after being now extruded is not complete
Hologony short circuit, after testing needle removes lithium battery casing, the voltage of the voltage of lithium battery recovers, then lithium battery security performance is described
Well；If after testing needle pushes maximum displacement, after testing needle extrudes the depth capacity of lithium battery casing, lithium battery observes lithium battery
There is not political reform in skin temperature, and magnitude of voltage does not also change, and the lithium battery interior after being now extruded is not short-circuited, testing needle
After removing lithium battery casing, all there is not political reform in lithium battery temperature and voltage, then explanation lithium battery security performance is outstanding.
The present embodiment extrudes lithium battery casing using many testing needles simultaneously, can improve testing efficiency and measuring accuracy,
And lithium battery security performance can be tested comprehensively, there is good practical value, be easy to promote the use of.
Embodiment 2
The mechanism of the present embodiment is substantially same as Example 1, and its difference is, the pressurizing unit in embodiment 1
Quantity be two, the quantity of the pressurizing unit in embodiment 2 is three, such as Fig. 7 and Fig. 8.When the quantity of pressurizing unit is three
When individual, the pressurizing unit above described stationary fixture is one, and pressurizing unit is arranged on the underface of stationary fixture；Described
Pressurizing unit below stationary fixture is two, is arranged on the pressurizing unit above stationary fixture and the extruding below stationary fixture
Device is distributed in y character form structure between being two.Three described pressurizing units are synchronizing moving, and other structures are all and embodiment
1 is identical, is not repeated elaboration again.
Above-described embodiment is only wherein specific implementation of the present utility model, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to this utility model the scope of the claims can not be interpreted as.It should be pointed out that the ordinary skill for this area
For personnel, without departing from the concept of the premise utility, some deformation can also be made and improve, these are apparent
Alternative forms belong to protection domain of the present utility model.
Claims (8)
1. a kind of lithium battery interior short-circuit test equipment, including being provided with the casing (1) of air inlet and air outlet, be arranged in casing
For placing the stationary fixture (2) of lithium battery, being arranged on the interior pressurizing unit (3) being used for lithium battery is tested of casing, set
Put in wall box and follow with the hot fluid circulation device (4) connecting in casing and with stationary fixture, pressurizing unit and hot-fluid
The controller (5) that loop device connects, controls stationary fixture, pressurizing unit and the work of hot fluid circulation device by controller (5)；
It is characterized in that, described stationary fixture (2) include the base (21) being fixed on casing and be arranged on above base (21) and
The fixing lid (22) being mutually matched with base；It is provided with heater (211) in described base (21), adjusted by heater (211)
The temperature of the lithium battery in section stationary fixture (2)；Described pressurizing unit (3) be separately positioned on stationary fixture (2) top and
Lower section, the pressurizing unit above stationary fixture (2) is vertical with stationary fixture, and position is corresponding with the position of lithium battery,
The quantity of the pressurizing unit below stationary fixture (2) is more than one, by the pressurizing unit above stationary fixture with admittedly
The pressurizing unit synergy of clamp tool lower section carries out test test to the lithium battery in stationary fixture.
2. lithium battery interior short-circuit test equipment according to claim 1 is it is characterised in that described hot fluid circulation device
(4) include the hot-fluid of hot-fluid import (41) and the hot outlets (42), connection hot-fluid import and hot outlets being arranged in casing
Pipe (43), the heating element (44) being arranged in hot-fluid pipe and blower fan (45).
3. lithium battery interior short-circuit test equipment according to claim 2 is it is characterised in that the described interior position of casing (1)
Air outlet in hot fluid circulation device (4) is provided with deflector (6).
4. lithium battery interior short-circuit test equipment according to claim 3 is it is characterised in that described base (21) and solid
It is equipped with, in fixed lid (22), the instrument connection (23) matching with pressurizing unit position, pressurizing unit (3) passes through instrument connection (23) right
Lithium battery in stationary fixture carries out testing experiment.
5. lithium battery interior short-circuit test equipment according to claim 4 is it is characterised in that described pressurizing unit (3)
Inside it is provided with the testing needle (31) for being tested to lithium battery and be arranged on above testing needle for sensing test needle force
Pressure inductor (32)；Described testing needle (31) is located at the front end of pressurizing unit and the shape of its shapes and sizes and instrument connection
Match with size.
6. lithium battery interior short-circuit test equipment according to claim 5 is it is characterised in that be located under stationary fixture (2)
The quantity of the pressurizing unit of side is one or two.
7. lithium battery interior short-circuit test equipment according to claim 6 is it is characterised in that below described stationary fixture
Pressurizing unit be one, pressurizing unit is arranged on the underface of stationary fixture；Pressurizing unit below described stationary fixture
For two, it is arranged on the pressurizing unit above stationary fixture and the pressurizing unit below stationary fixture for being in y font between two
Structure distribution.
8. lithium battery interior short-circuit test equipment according to claim 7 is it is characterised in that described controller (5) sets
Put the side wall in casing, and described controller (5) is pid controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620862553.2U CN205920201U (en) | 2016-08-10 | 2016-08-10 | Lithium battery short circuit test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620862553.2U CN205920201U (en) | 2016-08-10 | 2016-08-10 | Lithium battery short circuit test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205920201U true CN205920201U (en) | 2017-02-01 |
Family
ID=57871628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620862553.2U Expired - Fee Related CN205920201U (en) | 2016-08-10 | 2016-08-10 | Lithium battery short circuit test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205920201U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196155A (en) * | 2017-12-25 | 2018-06-22 | 桑德集团有限公司 | It is a kind of for detect battery roll core whether short circuit method |
| CN108828457A (en) * | 2018-07-27 | 2018-11-16 | 清华大学 | Battery thermal runaway experimental provision and its system |
| CN108872877A (en) * | 2018-07-27 | 2018-11-23 | 清华大学 | Battery thermal runaway experimental provision and its system |
| CN109164393A (en) * | 2018-07-27 | 2019-01-08 | 清华大学 | Battery thermal runaway experimental provision, system and method |
-
2016
- 2016-08-10 CN CN201620862553.2U patent/CN205920201U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196155A (en) * | 2017-12-25 | 2018-06-22 | 桑德集团有限公司 | It is a kind of for detect battery roll core whether short circuit method |
| CN108828457A (en) * | 2018-07-27 | 2018-11-16 | 清华大学 | Battery thermal runaway experimental provision and its system |
| CN108872877A (en) * | 2018-07-27 | 2018-11-23 | 清华大学 | Battery thermal runaway experimental provision and its system |
| CN109164393A (en) * | 2018-07-27 | 2019-01-08 | 清华大学 | Battery thermal runaway experimental provision, system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 Termination date: 20170810 |
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| CF01 | Termination of patent right due to non-payment of annual fee |