CN207817107U - A kind of short circuit detector of battery core - Google Patents
A kind of short circuit detector of battery core Download PDFInfo
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- CN207817107U CN207817107U CN201721837745.9U CN201721837745U CN207817107U CN 207817107 U CN207817107 U CN 207817107U CN 201721837745 U CN201721837745 U CN 201721837745U CN 207817107 U CN207817107 U CN 207817107U
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- battery core
- temperature
- short
- short circuit
- detecting device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model is related to lithium ion battery detection technique fields, provide a kind of short circuit detector of battery core, heating device, for being heated to battery core；Temperature-detecting device, the temperature for detecting battery core；Short-circuit detecting device, it is whether short-circuit for detecting the battery core after heated device heats；Control device, control device first end are connect with heating device, and second end is connect with temperature-detecting device, and third end is connect with short-circuit detecting device.Strength reduction after the diaphragm temperature of battery core increases under hot environment can more effectively detect the short circuit for being not easy to detect in routine test and micro-short circuit battery core so that undesirable element is amplified.And since the undesirable element of battery core under high temperature is amplified, even if short-circuit detecting device tests battery core in the environment of low pressure, it also can effectively there will be the battery cores of undesirable element detected, it is therefore prevented that when testing battery core short circuit under normal temperature high voltage environment the problem of existing manufacturing scrap.
Description
Technical field
The utility model is related to lithium ion battery detection technique field more particularly to a kind of short circuit detectors of battery core.
Background technology
With the continuous development of lithium battery technology, the advantages that long-life, light, high appearance, obtains the favor of consumer, especially
It is applied widely in electric vehicle industry lithium battery.Battery with two side terminals and security facing tightened up as a result,
It is required that.And in the production process of lithium ion battery, the short-circuit risks for being directly related to battery security are even more to produce detection process
Middle key procedure directly decides the quality of produced product, and quality determines the life of enterprise.
Existing lithium ion battery is the hot pressing shaping under normal temperature environment to the short-circuit test of battery core in production process
It carries out afterwards or in hot pressing reforming process.Make the undesirable elements such as particle present in battery core, burr by loading high pressure
Diaphragm is pierced through, thus short-circuit detecting device detects battery core short circuit, there are the electricity that particle, burr etc. there are short-circuit risks to reject
Core is allowed to that lower process can not be flowed into.
In the short-circuit test carried out under the above normal temperature environment, the high pressure of use is generally 200-300V or so.Using such
Whether high voltage tester battery core is short-circuit, there are a very important risk, namely originally under normal operation will not be by
The diaphragm of arc through can lead to meaningless manufacturing scrap by high electrical breakdown.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
One of the utility model purpose is：A kind of short circuit detector of battery core is provided, is solved in the prior art
Can there are problems that manufacturing scrap when testing battery core short circuit under existing normal temperature high voltage environment.
In order to realize the purpose, the utility model provides a kind of short circuit detector of battery core, and heating device is described to add
Thermal is for heating the battery core；Temperature-detecting device, the temperature-detecting device is for detecting the battery core
Temperature；Short-circuit detecting device, whether the short-circuit detecting device is for detecting the battery core after the heating devices heat
Short circuit；Control device, the control device first end are connect with the heating device, and second end connects with the temperature-detecting device
It connects, third end is connect with the short-circuit detecting device；Wherein, the control device is according to the temperature-detecting device received
The temperature value detected controls the short-circuit detecting device and is detected to the battery core.
Preferably, the heating device includes heater and the first electric-controlled switch for being connect with the heater；It is described
Short-circuit detecting device includes detector and the second electric-controlled switch for being connect with the detector；The control device and the temperature
The connection of degree detection device controls described first to receive the temperature of the battery core detected according to the temperature value of the battery core
The break-make of electric-controlled switch and second electric-controlled switch.
Preferably, the control device includes comparing module, setting value is previously stored in the comparing module, and can incite somebody to action
The temperature of the battery core is compared with the setting value：It is described when the temperature of the battery core reaches the setting value
Control device controls first electric-controlled switch and disconnects and control the second electric-controlled switch closure.
Preferably, the control device includes comparing module and timing module；It is previously stored with and sets in the comparing module
Definite value, and the temperature of the battery core can be compared with the setting value；When the temperature of the battery core reaches the setting value
When, the timing module starts timing；And when the timing module timing reaches setting duration, the control device controls institute
The first electric-controlled switch is stated to disconnect and control the second electric-controlled switch closure.
Preferably, the setting value is 85 DEG C -100 DEG C.
Preferably, the temperature-detecting device be temperature sensor, the temperature sensor include probe and with the spy
The sensing line of head connection, and the probe is contacted with the battery core.
Preferably, the heating device is baking oven.
Preferably, the short-circuit detecting device includes probe, is contacted with the lug of the battery core by the probe, to institute
Battery core is stated to be detected.
Preferably, the short-circuit detecting device can set test voltage, and the test voltage is less than the work of the battery core
Make voltage.
Preferably, the test voltage is 100~150V.
The technical solution of the utility model has the following advantages：The short circuit detector of the battery core of the utility model, packet
Include heating device, so as to by heating devices heat to high temperature, and under high temperature environment test battery core short-circuit conditions.High temperature
The diaphragm temperature of battery core is raised intensity and is lowered under environment, so that particle, foreign matter, burr in battery core etc. is easier to pierce
Diaphragm is worn, undesirable element is amplified, and can more effectively detect the short circuit for being not easy to detect in routine test and micro-short circuit battery core.And
And since the undesirable element of battery core under high temperature is amplified, even if short-circuit detecting device surveys battery core in the environment of low pressure
Examination, also can effectively there will be the battery cores of undesirable element detected, it is therefore prevented that battery core short circuit is tested under normal temperature high voltage environment
When existing manufacturing scrap the problem of.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the connection relationship diagram of the battery core short circuit detector of the utility model embodiment one；
Fig. 2 is the operating diagram of the short circuit detector of the battery core of embodiment one；
Fig. 3 and Fig. 4 is the operating diagram of the short circuit detector of battery core when heating device uses baking oven；
In figure：1, baking oven；2, pallet；3, detector；4, probe；5, temperature sensor；6, line is sensed；7, conducting wire；8, electric
Core；9, the second electric-controlled switch；10, pressing device.
Specific implementation mode
In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
In the description of the present invention, it should be noted that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and should not be understood as
Instruction implies relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, it can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment one
Refer to Fig. 1 and Fig. 2, the short circuit detector of the battery core 8 of embodiment one, the equipment include for battery core 8 into
The heating device of row heating；Temperature-detecting device for detecting 8 temperature of battery core, temperature-detecting device are preferably temperature sensor
5；For detect the battery core 8 after the heating of heated device whether the short-circuit detecting device of short circuit, if the detection of short-circuit detecting device
Internal resistance is more than or equal to the normal internal resistance of battery core 8, then battery core 8 is not short-circuit, if detection internal resistance is less than the normal internal resistance of battery core 8, electricity
8 short circuit of core or micro-short circuit；And control device, control device first end are connect with heating device, second end is filled with temperature detection
Connection is set, third end is connect with short-circuit detecting device；Wherein, control device is detected according to the temperature-detecting device received
Temperature value control short-circuit detecting device is detected battery core 8.
The short circuit detector of the battery core 8 of the present embodiment one comprising heating device, so as to which battery core 8 is heated to
High temperature, and the short-circuit conditions of battery core 8 are tested under high temperature environment.The diaphragm of battery core 8, temperature are raised intensity under hot environment
It is lowered, so that particle, foreign matter, burr in battery core 8 etc. is easier to pierce through diaphragm, undesirable element is amplified, can more have
The short circuit for detecting to be not easy to detect in routine test of effect and micro-short circuit battery core 8.Also, due under high temperature battery core 8 it is bad because
Element is amplified, even if short-circuit detecting device can effectively there will be bad if tested battery core 8 in the environment of low pressure
The battery core 8 of factor detected, it is therefore prevented that when testing 8 short circuit of battery core under normal temperature high voltage environment the problem of existing manufacturing scrap.
In the present embodiment one, short-circuit test is carried out to battery core 8, qualified battery core 8 is obtained and normally circulates by flow, short circuit electricity
Core 8, which is done, does over again or scraps processing.
Further, the heating device includes heater and the first electric-controlled switch (figure with the fever body running
In do not show), the short-circuit detecting device includes detector 3 and the second electric-controlled switch 9 with 3 break-make of the detector.Institute
Control device is stated to be connect with the temperature sensor 5 to obtain the temperature value of the battery core, and according to the temperature value of the battery core
Control the break-make of first electric-controlled switch and second electric-controlled switch 9.To which control device is opened by the way that control first is automatically controlled
Pass and the second electric-controlled switch 9 achieve the purpose that control heating device and short-circuit detecting device.
It should be noted that heating device listed herewith and short-circuit detecting device, do not constitute and protect model to the application
The limitation enclosed.
In Fig. 2, detector 3 is connected by conducting wire 7 and battery core 8.
In the present embodiment one, heating device and short-circuit detecting device are controlled by the way that control device is arranged, so as to realize
The automation of the short circuit detector of battery core 8.To which when the temperature value of battery core 8 reaches setting value, control device controls
Heating device disconnects automatically, and controls short-circuit detecting device and be closed automatically to test the short-circuit conditions of battery core 8.
Specifically, the control device includes comparing module, it is previously stored with setting value in the comparing module, and by institute
The temperature and the setting value for stating battery core are compared, when the temperature of the battery core reaches the setting value, the control
Device processed controls first electric-controlled switch and disconnects and control the closure of the second electric-controlled switch 9.
It should be noted that control device is not limited by illustrating herein, as long as can be controlled according to the temperature of battery core 8
The work of electric-heating assembly and short-circuit detecting device, any form of control device should all be included in the protection model of the application
In enclosing.
Wherein, pre-stored setting value is preferably between 85 DEG C -100 DEG C, to which 8 temperature of battery core reaches in comparing module
When 85 DEG C -100 DEG C, the short-circuit conditions of battery core 8 are tested.Wherein, it is 85 DEG C -100 DEG C why to select setting value,
It is because battery core 8 is when 85 DEG C -100 DEG C, particle, foreign matter, burr etc. in battery core 8 are easier to pierce through diaphragm, namely should
At a temperature of the undesirable element of battery core be easier to be found.Further preferably 90-95 DEG C, still more preferably 91~93 DEG C.
In the present embodiment one, in order to accurately measure the temperature value of battery core 8, temperature sensor 5 include probe and with it is described
The sensing line 6 of probe connection, and the probe is contacted with the battery core 8.Certainly, as long as the temperature of battery core 8 can be measured accurately
Degree, the type and structure type of temperature sensor 5 are unrestricted, and sensor disclosed in any prior art may be used
Type.Preferably, the core of probe access battery core 8, when the core of core 8 has reached 85 DEG C, core 8 is whole to be can reach
Demand for heat, while avoiding temperature is excessively high from damaging every film strength, diaphragm cannot restore due intensity after restoring room temperature.
In Fig. 3 and Fig. 4, heating device uses the form of baking oven 1.To which in order to be heated to battery core 8, battery core 8 be put
Enter into baking oven 1.In the case of this kind, various avoid holes can be set on baking oven 1, to ensure that temperature sensor 5 and short circuit are examined
Surveying device can be linked into baking oven 1 by avoid holes.And when so that battery core 8 is in baking oven 1, the short circuit inspection of battery core 8
Measurement equipment can accurately measure the short-circuit conditions of battery core 8, and high temperature battery core 8 is taken out to the process for surveying short circuit after eliminating baking
Existing security risk also improves the efficiency of test.
Can be in heat safe special trays 2 and it is possible to which battery core 8 is placed on, and pressing device is set on pallet 2
10, after battery core 8 is placed on pallet 2, battery core 8 is pressed on pallet 2 by pressing device 10.It is basic herein
On, pallet 2 is placed into baking oven 1, to be heated to battery core 8.
Wherein, pressing device 10 is preferably but necessarily using shrapnel simple in structure.
Certainly, the heating device of the present embodiment one is not limited by attached drawing 3 and Fig. 4, is heated disclosed in any prior art
Mode can be included within the protection domain of the application.For example, the heating device of the present embodiment one is carried out using heater strip
When heating, the heating requirements to battery core 8 are not only met, but also facilitate the setting of temperature sensor 5 and short-circuit detecting device.
In the present embodiment one, in order to ensure effective connection between short-circuit detecting device and battery core 8, preferably short-circuit detecting
Device includes probe 4, is contacted with the lug of the battery core 8 by the probe 4, is detected to the battery core 8.
In addition, short-circuit detecting device preferably still necessarily uses short circuit of polar detection device, so as to directly judge
The short-circuit conditions of battery core 8.
Due to being usually to need to be assembled into battery modules to be used after the completion of single battery production, the present embodiment one
In, the test voltage of the short-circuit detecting device is less than the operating voltage of the battery core 8.
If it is using the test voltage higher than 8 operating voltage of battery core to be measured, has more battery cores 8 qualification is not achieved and want
It asks, but battery core to be measured 8 will not work in this high voltage range, an innocent person for thus causing part battery core 8 scraps, and reduces
First-pass yield, increases cost.And test voltage is less than the operating voltage of battery core 8, it is ensured that do not do lost work, both met
The work requirements of battery modules also avoid excessively scrapping using higher than caused by the test voltage of 8 operating voltage of battery core to be measured.
In order to avoid battery core 8 is punctured by high-voltage arc, in the present embodiment one, preferably but necessarily short-circuit detecting device
Test voltage be 100~150V, further preferred 110~140V, still more preferably 120~130V, particularly preferred 122V,
124V, 125V, 127V and 129V..
In the present embodiment, when heating device uses baking oven 1, what the short circuit detector of battery core 8 tested battery core 8
Schematic diagram is please with further reference to Fig. 3 and Fig. 4.It is found by Fig. 3, battery core 8 is pressed on pallet 2, and passes through probe 4 and short circuit
Detection device connects.
Embodiment two
The difference is that, the short circuit detector of the battery core 8 of the present embodiment two, control device is not only with embodiment one
Further include timing module including comparing module.
Specifically, the battery core for being previously stored with setting value in the comparing module, and temperature sensor 5 being measured
Temperature is compared with the setting value；When the temperature of the battery core reaches the setting value, the timing module starts to count
When.And when the timing module timing reaches setting duration, the control device controls first electric-controlled switch and disconnects, simultaneously
Second electric-controlled switch 9 is controlled to be closed.
That is, in the present embodiment two so that battery core 8 maintains specific temperature to reach setting duration and then carried out to battery core 8
Short-circuit test.
In the present embodiment two, the undesirable element of battery core 8 is more fully amplified, and has been measured so as to significantly more efficient
The battery core 8 of problem.
The short circuit detector of the battery core 8 of above example can will influence whether electricity in cell production process
The battery core 8 of pond safety is rejected, and is improved the safety of entire lithium ion battery production process, is reduced the life of entire production process
Produce cost and testing cost.
Embodiment of above is merely to illustrate the utility model rather than limitations of the present invention.Although with reference to implementation
The utility model is described in detail in example, it will be understood by those of ordinary skill in the art that, to the technology of the utility model
Scheme carries out various combinations, modification or equivalent replacement should all without departure from the spirit and scope of technical solutions of the utility model
Cover in the right of the utility model.
Claims (10)
1. a kind of short circuit detector of battery core, which is characterized in that the equipment includes：
Heating device, the heating device is for heating the battery core；
Temperature-detecting device, the temperature-detecting device are used to detect the temperature of the battery core；
Whether short-circuit detecting device, the short-circuit detecting device are short for detecting the battery core after the heating devices heat
Road；
Control device, the control device first end are connect with the heating device, and second end connects with the temperature-detecting device
It connects, third end is connect with the short-circuit detecting device；Wherein, the control device is according to the temperature-detecting device received
The temperature value detected controls the short-circuit detecting device and is detected to the battery core.
2. the short circuit detector of battery core according to claim 1, which is characterized in that
The heating device includes heater and the first electric-controlled switch for being connect with the heater；
The short-circuit detecting device includes detector and the second electric-controlled switch for being connect with the detector；
The control device is connect with the temperature-detecting device to receive the temperature of the battery core detected, and according to described
The temperature value of battery core controls the break-make of first electric-controlled switch and second electric-controlled switch.
3. the short circuit detector of battery core according to claim 2, which is characterized in that
The control device includes comparing module, setting value is previously stored in the comparing module, and can be by the battery core
Temperature is compared with the setting value：
When the temperature of the battery core reaches the setting value, it is disconnected that the control device controls first electric-controlled switch
It opens and controls second electric-controlled switch and be closed.
4. the short circuit detector of battery core according to claim 2, which is characterized in that
The control device includes comparing module and timing module；It is previously stored with setting value in the comparing module, and can incite somebody to action
The temperature of the battery core is compared with the setting value；When the temperature of the battery core reaches the setting value, the timing
Module starts timing；And
When the timing module timing reaches setting duration, the control device controls first electric-controlled switch and disconnects, simultaneously
Second electric-controlled switch is controlled to be closed.
5. the short circuit detector of battery core according to claim 3 or 4, which is characterized in that the setting value be 85 DEG C-
100℃。
6. the short circuit detector of battery core as claimed in any of claims 1 to 4, which is characterized in that the temperature
Detection device is temperature sensor, and the temperature sensor includes probe and the sensing line with the probe connection, and the spy
Head is contacted with the battery core.
7. the short circuit detector of battery core as claimed in any of claims 1 to 4, which is characterized in that the heating
Device is baking oven.
8. the short circuit detector of battery core as claimed in any of claims 1 to 4, which is characterized in that the short circuit
Detection device includes probe, is contacted with the lug of the battery core by the probe, is detected to the battery core.
9. the short circuit detector of battery core as claimed in any of claims 1 to 4, which is characterized in that the short circuit
Detection device can set test voltage, and the test voltage is less than the operating voltage of the battery core.
10. the short circuit detector of battery core according to claim 9, which is characterized in that the test voltage be 100~
150V。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721837745.9U CN207817107U (en) | 2017-12-25 | 2017-12-25 | A kind of short circuit detector of battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721837745.9U CN207817107U (en) | 2017-12-25 | 2017-12-25 | A kind of short circuit detector of battery core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207817107U true CN207817107U (en) | 2018-09-04 |
Family
ID=63330474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721837745.9U Expired - Fee Related CN207817107U (en) | 2017-12-25 | 2017-12-25 | A kind of short circuit detector of battery core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207817107U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881941A (en) * | 2021-01-08 | 2021-06-01 | 东莞市嘉仕新能电子仪器设备有限公司 | Insulation test method capable of detecting capillary short circuit of battery core and corresponding battery conduction insulation detector |
| CN113311346A (en) * | 2021-05-19 | 2021-08-27 | 北京车和家信息技术有限公司 | Battery cell early warning method and device, cloud platform and storage medium |
-
2017
- 2017-12-25 CN CN201721837745.9U patent/CN207817107U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881941A (en) * | 2021-01-08 | 2021-06-01 | 东莞市嘉仕新能电子仪器设备有限公司 | Insulation test method capable of detecting capillary short circuit of battery core and corresponding battery conduction insulation detector |
| CN113311346A (en) * | 2021-05-19 | 2021-08-27 | 北京车和家信息技术有限公司 | Battery cell early warning method and device, cloud platform and storage medium |
| CN113311346B (en) * | 2021-05-19 | 2024-02-06 | 北京车和家信息技术有限公司 | Battery cell early warning method and device, cloud platform and storage medium |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180904 Termination date: 20201225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |