CN209327254U - The detection device of battery core thermal coefficient - Google Patents
The detection device of battery core thermal coefficient Download PDFInfo
- Publication number
- CN209327254U CN209327254U CN201821858980.9U CN201821858980U CN209327254U CN 209327254 U CN209327254 U CN 209327254U CN 201821858980 U CN201821858980 U CN 201821858980U CN 209327254 U CN209327254 U CN 209327254U
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- CN
- China
- Prior art keywords
- battery core
- detection device
- fastener
- cooling piece
- storage case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model discloses a kind of detection device of battery core thermal coefficient, the detection device includes the storage case for accommodating the battery core, the respectively arranged cooling piece in two sides in the battery core first direction, the heating sheet inside the battery core, the heater wire of the connection heating sheet, the inside thermometric line of at least one internal temperature measuring point temperature of the measurement battery core, the external thermometric line of measurement at least one surface temperature measurement point temperature of battery core and the compressing member that can be close to the cooling piece, the battery core and the heating sheet along first direction；The internal temperature measuring point is arranged in a one-to-one correspondence in said first direction with the surface temperature measurement point.The detection device of the utility model embodiment improves the accuracy of the battery core thermal coefficient measured.
Description
Technical field
The utility model relates to battery tester, in particular to a kind of detection device of battery core thermal coefficient.
Background technique
Battery can generate a large amount of heat in charge and discharge process, these heats can be in single battery, mould group and battery pack
It is inside diffused and propagates.Battery, mould group and battery pack design engineer need to assess the main direction of transfer and battery core of heat
The size of diffusion heat ability outward, thermal coefficient is the important indicator for measuring substance heat-transfer capability, if leading for battery core can be measured
Hot coefficient, it will facilitate core strueture design and the exploitation of battery thermal management system, battery thermal management simulation result can be made
It is more accurate, shorten product development cycle, improves efficiency.Test device of thermal conductivity coefficient at this stage be to object heating one end,
Other end thermometric, but since battery core is that multiple material winding is made, then when heating to battery core one end, heat can be along
Flow to thermometric end close to the collector of fire end, i.e. heat can be flowed along the direction a as shown in Figure 1, without longitudinally through
Battery core, i.e. heat will not be flowed along the direction b as shown in Figure 1, cause to measure numerical value inaccuracy.
Utility model content
In order to solve the above technical problems, the utility model embodiment provides a kind of detection device of battery core thermal coefficient.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
The utility model embodiment provides a kind of detection device of battery core thermal coefficient, and the detection device includes accommodating
The storage case of the battery core, in the respectively arranged cooling piece in two sides of the battery core first direction, inside the battery core
The inside thermometric of temperature measuring point temperature inside at least one of heating sheet, the heater wire of the connection heating sheet, the measurement battery core
Line, measurement at least one surface temperature measurement point temperature of battery core external thermometric line and can be along first direction by the cooling
The compressing member that part, the battery core and the heating sheet are close to；The internal temperature measuring point and the surface temperature measurement point are described first
It is arranged in a one-to-one correspondence on direction.
In above scheme, the cooling piece of the battery core at least side includes one-to-one with the surface temperature measurement point
Through-hole, the external thermometric line are arranged in the through-hole.
In above scheme, the detection device further includes the insulation for preventing heat from transmitting to the battery core side, described
Insulation is mounted on the receiving box inner wall and is close to the side of the battery core or/and the cooling piece.
In above scheme, the inner sidewall of the storage case is tight with the side of the battery core and the side of the cooling piece simultaneously
Patch；Or the storage case is located between two cooling pieces, and the inner sidewall of the storage case and the side of the battery core are tight
Patch.
In above scheme, the storage case is equipped with collection string holes, and the internal thermometric line and the heater wire pass through institute
Collection string holes is stated to stretch to outside the storage case.
In above scheme, the surface of two sides is equidistant in a first direction for the heating sheet and the battery core.
In above scheme, the cooling piece includes coldplate and the phase-change material in the coldplate, the cooling
Plate is bonded with the battery core.
In above scheme, the compressing member includes at least one set of clip；Clip described in every group includes the first Fastener,
Two Fasteners and fastener, first Fastener are located in one of the side of cooling piece, and second Fastener is located at another
The side of one cooling piece, the fastener connect first Fastener and second Fastener.
In above scheme, the storage case accommodates the cooling piece, offers multiple guide grooves on the storage case, described
First Fastener and the second Fastener are arranged in the corresponding guide groove respectively.
In above scheme, the surface temperature measurement point at least interval setting in both directions in the same plane；
Or/and the distribution shape of the surface temperature measurement point is cross, and one of them described surface temperature measurement point is located at institute
State the center of battery core.
The utility model embodiment provides a kind of detection device of battery core thermal coefficient, and heating sheet is arranged as heat source
Inside battery core, battery core is located between two cooling pieces, and storage case is cooling for accommodating battery core or for accommodating battery core and cooling piece
The temperature difference is formed between part and heating sheet so that the heat that heating sheet generates is flowed along the longitudinal direction of battery core.Internal thermometric line is used for
The temperature inside battery core is measured, the temperature on battery core surface can be measured using external thermometric line, it can according to measured temperature
The thermal coefficient of battery core is obtained, the detection device of the utility model embodiment improves the accurate of the battery core thermal coefficient measured
Degree.
Detailed description of the invention
Fig. 1 is one optional structural schematic diagram of battery core in the utility model embodiment；
Fig. 2 is one optional structural schematic diagram of detection device in the utility model embodiment；
Fig. 3 be Fig. 2 in A-A to cross-sectional view.
Appended drawing reference: storage case 10；Guide groove 11；Collect string holes 12；Cooling piece 20；Coldplate 21；Phase-change material 22；Through-hole
23；Internal thermometric line 30；Heater wire 40；Heating sheet 50；Compressing member 60；First Fastener 61；Second Fastener 62；Nut 63；
Stud 64；External thermometric line 70；Insulation 80；Battery core 90, the gap 91 of battery core.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.Obviously, described
Embodiment is a part of the embodiment of the utility model, rather than whole embodiments.Reality based on described the utility model
Example is applied, those skilled in the art's every other embodiment obtained belongs to scope of protection of the utility model.
In the utility model embodiment, the orientation or positional relationship of the instructions such as "upper", "lower", "inner", "outside", " side "
For based on attached orientation or positional relationship shown in FIG. 1.First direction refers in Fig. 1 upper and lower in the direction of arrow b meaning or Fig. 2
To.
Thermal coefficient can be according to Fourier lawIt acquiresWherein,For
The temperature inside battery core 90 measured by least one internal thermometric line 30, i.e.,For the temperature that internal temperature measuring point side obtains,
Temperature for 90 surface of battery core measured by least one external thermometric line 70, i.e.,For the temperature of surface temperature measurement point, q is
The heating power being applied on heating sheet 50, the thickness of battery core 90 of the δ between internal temperature measuring point and respective external temperature measuring point, λ
For thermal coefficient.Due to q it is known that δ can be easier to measure using tools such as micrometers, it need to only measureWithValue
Thermal coefficient λ can be calculated.The detection device of the utility model embodiment is to pass through measurementWithValue ask indirectly
Obtain thermal coefficient.
Detection device provided by the embodiment of the utility model includes the storage case 10 for accommodating battery core 90, in 90 first party of battery core
To the respectively arranged cooling piece 20 in two sides, the heating sheet 50 inside battery core 90, connect heating sheet 50 heater wire, measurement
The inside temperature line 30 of the internal temperature measuring point temperature of at least one of battery core 90 measures at least one the surface temperature measurement point temperature of battery core 30
The external compressing member 60 thermometric line 70 and can be close to cooling piece 20, battery core 90 and heating sheet 50 along first direction；Inside is surveyed
Warm spot is arranged in a one-to-one correspondence in a first direction with surface temperature measurement point.
First direction can refer to Fig. 2 and up and down direction shown in Fig. 3.In order to facilitate the internal temperature measuring point of measurement and respective external
The thickness of battery core 90 between temperature measuring point, apart from battery core 90, the surface of two sides is equidistant heating sheet 50 in a first direction, i.e.,
Heating sheet 50 is located at the middle part of battery core 90.Generally, battery core 90 is wound by pole piece coiling needle, after the completion of winding, volume needle from
It is detached in battery core 90, thus, 90 center of battery core has gap 91, and heating sheet 50 may be mounted in the gap 91.Therefore, it heats
The equal part battery core 90 of thickness is separated between piece 50 is equal between the two sides of first direction and two cooling pieces 20.At this point, δ is whole
The 1/2 of a 90 thickness value of battery core.
As shown in Figures 2 and 3, one end of heater wire 40 is connected with heating sheet 50, and the other end stretches out storage case 10；Heating sheet
50 place in the horizontal direction, and the two sides up and down of heating sheet 50 are close to battery core 90 respectively.Specifically, heating sheet 50 runs through battery core 90
The gap 91 at center, the cross-sectional area of heating sheet 50 are preferably equal with the cross-sectional area in the gap 91.The utility model is real
The detection device for applying example further includes heating device, such as power supply, and power supply carries out invariable power q to heating sheet 50 by heater wire 40 and adds
Heat.
The detection device of the utility model embodiment needs that temperature sensor is cooperated to use, temperature sensor by with inside
The contact of thermometric line 30 carries out temperature measurement, and the quantity of internal thermometric line 30 and internal temperature measuring point correspond, internal thermometric line 30
Can be set one, but preferably, the setting at the internal interval at the different location of battery core 90 of thermometric line 30 two or two with
On, as battery core 90 different location at the internal thermometric lines 30 of setting 5 to measure the temperature values of 5 different internal temperature measuring points, this
When,For the average value of 5 temperature values.Multiple internal thermometric lines 30 are set and internal temperature measuring point can be improved measurement accurately
Property, reduce error.
As shown in figure 3, the two sides up and down of battery core 90 are difference one cooling piece 20 of each setting, cooling piece 20 and heating sheet 50
Cooperation provide temperature difference, guarantee heat self-heating piece 50 along battery core 90 longitudinal direction to cooling piece 20 transmit, avoid heat to
The transmitting of other directions, improves the accuracy of measurement result.Further, the cooling piece 20 of at least side of battery core 90 includes and table
The one-to-one through-hole 23 of face temperature measuring point, external thermometric line 70 are arranged in through-hole 23.Through-hole 23 and external thermometric line 70 1 are a pair of
It answers, external thermometric line 70 is arranged in through-hole 23 to contact with 90 surface of battery core, to measure the temperature on 90 surface of battery core.This is practical
The detection device of new embodiment needs that temperature sensor is cooperated to use, temperature sensor by contacted with external thermometric line 70 into
Trip temperature measurement, as shown in Fig. 2, the quantity of through-hole 23 and external thermometric line 70 is the interval setting at 90 different location of battery core
5, at this point,For the average value for 5 temperature values that 5 through holes measure.
Through-hole 23 can be provided on one of cooling piece 20, can also be respectively provided on two cooling pieces 20, due to position
90 structure of part battery core in about 50 two sides of heating sheet is essentially identical, through-hole only can be arranged on a cooling piece 20 wherein
23。
In order to guarantee the accuracy of measurement, at least interval setting in both directions in the same plane of surface temperature measurement point.Such as
Shown in Fig. 2, the distribution shape of surface temperature measurement point is cross, and one of surface temperature measurement point is located at the center of battery core 90.
Cooling piece 20 includes coldplate 21 and the phase-change material 22 in coldplate 21, and coldplate 21 and battery core 90 are pasted
It closes.Phase-change material 22 can absorb heat using phase transformation, improve the cooling effect of cooling piece 20.Phase-change material 22 can be selected
Paraffin well-known to those skilled in the art, fatty acid, sulfate, nitrate etc..
The detection device of the utility model embodiment further includes the insulation 80 for preventing heat from transmitting to 90 side of battery core, absolutely
Warmware 80 is mounted on 10 inner sidewall of storage case and is close to the side of battery core 90 or/and cooling piece 20.Further, insulation 80 is
It is attached to the adiabatic membrane of 10 inner wall of storage case, adiabatic membrane can choose the preferable material of heat-insulating property, such as aluminium oxide ceramics, stone
Cotton, polyurethane foam plastics, glass fibre etc..Storage case 10 can only accommodate battery core 90, it may be assumed that storage case 10 is located at two coolings
Between part 20, and the inner sidewall of storage case 10 is close to the side of battery core 90.About 10 storage case is open at this time, to cool down
Part 20 is close to battery core 90, and insulation 10 is only close to the side of battery core 90, and battery core 90 is made to be close to not only avoid with insulation 80
Storage case 10 inner air has an impact heat transfer, it is thus also avoided that the heat that heating sheet 50 generates in battery core 90 is from battery core 90
Side is scattered and disappeared, and the accuracy of measurement is improved.Moreover it is preferred that storage case 10 can accommodate battery core 90 and cooling piece 20 simultaneously,
That is: the inner sidewall of 10 storage case 10 of storage case is close to the side of the side of battery core 90 and cooling piece 20 simultaneously.At this point, insulation
80 are close to battery core 90 and cooling piece 20 simultaneously, avoid heat respectively and scatter and disappear from battery core 90 and cooling piece 20 to side, into one
Step improves the accuracy of measurement result.The insulated part 80 of surrounding in order to guarantee cooling piece 20 and battery core 90 is heat-insulated, accommodates
Height of the height of case 10 commonly greater than the cooling piece 20 for being located at the top.Storage case 10 can be as shown in Figures 2 and 3 top
With opening, battery core 90 and cooling piece 20 are put into storage case 10 from upper opening.Underlying cooling piece 20 is close to hold
It receives the bottom of case 10, only opens up through-hole 23 on the cooling piece 20 being located above.In the unshowned embodiment of the utility model,
Storage case 10 can also be open up and down.
It is understood that in order to further increase insulation effect, storage case 10 can also select heat-insulating material to make.
Storage case 10 is equipped with collection string holes 12, and internal thermometric line 30 and heater wire 40 stretch to storage case by collecting string holes 12
Outside 10.Collection string holes 12 keeps harness distribution clean and tidy, convenient for detection operation.
Compressing member 60 can fit closely cooling piece 20, battery core 90 and heating sheet 50, improve accuracy of measurement.This is practical
In the novel embodiment shown, compressing member 60 includes at least one set of clip；Every group of clip includes the first Fastener 61, second card
Tight part 62 and fastener, the first Fastener 61 are located in one of the side of cooling piece 20, and the second Fastener 62 is located at another
The side of cooling piece 20, fastener connect first Fastener 61 and the second Fastener 62.First Fastener 61, the second clamping
Cooling piece 20, battery core 90 and heating sheet 50 are clipped in the middle by part 62, are then locked using fastener,
When storage case 10 can accommodate simultaneously battery core 90 and cooling piece 20, for the ease of the installation of clip, storage case 10
On offer multiple guide grooves 11, the first Fastener 61 and the second Fastener 62 are arranged in corresponding guide groove 11 respectively.Such as Fig. 2 and
Shown in Fig. 3, compressing member 60 includes spaced two groups of clips, sets that there are two guide grooves 11 above storage case 10, due to being located at
The lower section of cooling piece 20 of downside is abutted with 10 bottom of storage case, and the second Fastener 62 is arranged in 10 bottom outside of storage case, in order to
10 bottom of storage case is set to keep smooth, correspondingly, the bottom of storage case 10 also opens up two guide grooves 11；About storage case 10
Guide groove 11 correspond.Further, the both ends of the first Fastener 61 are equipped with the first mounting hole, the second Fastener 62
Both ends are equipped with the second mounting hole corresponding with the first mounting hole, and fastener is arranged in the first mounting hole and corresponding second peace
Fill hole.Specifically, fastener includes stud 64 and nut 63, and stud 64 is worn corresponding first mounting hole and the second installation
Then hole is locked with nut 63.
It is understood that compressing member 60 can also be used with flowering structure in the unshowned embodiment of the utility model:
Compressing member 60 include elevating mechanism and compression bar, elevating mechanism be able to drive compression bar along first direction move with by cooling piece 20, electricity
Core 90 and heating sheet 50 are close to.Elevating mechanism is driven by cylinder or oil cylinder, and compression bar is located at the top of storage case 10.
The detection device of the utility model embodiment use the following steps are included: S10, measurement 90 parameter of battery core, with thousand
The thickness for dividing ruler measurement battery core 90, is denoted as δ for the 1/2 of measured 90 thickness of battery core；S20, installation sample to be tested: by heating sheet
50 and internal thermometric line 30 be mounted on 90 center of battery core, be then in close contact heating sheet 50, internal thermometric line 30 and battery core 90,
Form sample to be tested；Above-mentioned sample to be tested is placed in storage case 10, and is placed in sample to be tested in two cooling pieces 20
Between, internal thermometric line 30 and heater wire 40 are connected to outside storage case 10 by collection string holes 12；Using bolt by 61 He of the first Fastener
The connection of second Fastener 62 guarantees that sample to be tested is fitted closely with two cooling pieces 20, and contact is good；S30, sample test: it gives
Heating sheet 50 carries out invariable power q heating, observes each monitoring temperature point temperature variations, after temperature is stablized, records temperature value,
It is denoted as by the temperature mean value that internal thermometric line 30 measuresIt is denoted as by the temperature mean value that external thermometric line 70 measuresMeter
It calculatesS40, basisCalculate 90 thermal coefficient λ of battery core.
To those skilled in the art according to the other structures of the detection device of the utility model embodiment and operation
All it is to be understood that and easy to accomplish, therefore is not described in detail.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (10)
1. a kind of detection device of battery core thermal coefficient, which is characterized in that the detection device includes accommodating the appearance of the battery core
Receive case, the respectively arranged cooling piece in two sides in the battery core first direction, the heating sheet inside the battery core, connection institute
State the heater wire of heating sheet, the inside thermometric line of at least one internal temperature measuring point temperature of the measurement battery core, the measurement electricity
The external thermometric line of at least one surface temperature measurement point temperature of core and can be along first direction by the cooling piece, the battery core and institute
State the compressing member of heating sheet abutting；The internal temperature measuring point corresponds in said first direction with the surface temperature measurement point to be set
It sets.
2. detection device according to claim 1, which is characterized in that the cooling piece of the battery core at least side includes
With the one-to-one through-hole of the surface temperature measurement point, the external thermometric line is arranged in the through-hole.
3. detection device according to claim 1, which is characterized in that the detection device further includes preventing heat to described
The insulation of battery core side transmitting, the insulation be mounted on the receiving box inner wall and with the battery core or/and described cold
But the side of part is close to.
4. detection device according to claim 1, which is characterized in that the inner sidewall of the storage case simultaneously with the battery core
Side and the cooling piece side be close to；Or the storage case is located between two cooling pieces, and the storage case
Inner sidewall be close to the side of the battery core.
5. detection device according to claim 1, which is characterized in that the storage case is equipped with collection string holes, the inside
Thermometric line and the heater wire are stretched to outside the storage case by the collection string holes.
6. detection device according to claim 1, which is characterized in that the heating sheet and the battery core in a first direction two
The surface of side is equidistant.
7. detection device according to claim 1, which is characterized in that the cooling piece includes coldplate and is located at described cold
But the phase-change material in plate, the coldplate are bonded with the battery core.
8. detection device according to claim 1, which is characterized in that the compressing member includes at least one set of clip；Every group
The clip includes the first Fastener, the second Fastener and fastener, and first Fastener is located in one of cooling piece
Side, second Fastener is located at the side of another cooling piece, and the fastener connects first Fastener
With second Fastener.
9. detection device according to claim 8, which is characterized in that the storage case accommodates the cooling piece, the appearance
It receives and offers multiple guide grooves on case, first Fastener and the second Fastener are arranged in the corresponding guide groove respectively.
10. detection device according to claim 1, which is characterized in that the surface temperature measurement point is in the same plane at least
Interval setting in both directions；
Or/and the distribution shape of the surface temperature measurement point is cross, and one of them described surface temperature measurement point is located at the electricity
The center of core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821858980.9U CN209327254U (en) | 2018-11-12 | 2018-11-12 | The detection device of battery core thermal coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821858980.9U CN209327254U (en) | 2018-11-12 | 2018-11-12 | The detection device of battery core thermal coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209327254U true CN209327254U (en) | 2019-08-30 |
Family
ID=67710094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821858980.9U Expired - Fee Related CN209327254U (en) | 2018-11-12 | 2018-11-12 | The detection device of battery core thermal coefficient |
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| Country | Link |
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| CN (1) | CN209327254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879811A (en) * | 2020-06-22 | 2020-11-03 | 国联汽车动力电池研究院有限责任公司 | Battery parameter measuring equipment and method |
-
2018
- 2018-11-12 CN CN201821858980.9U patent/CN209327254U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879811A (en) * | 2020-06-22 | 2020-11-03 | 国联汽车动力电池研究院有限责任公司 | Battery parameter measuring equipment and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20201112 |