CN112858105A - Device for measuring liquid absorption performance of battery, measuring method and application thereof - Google Patents
Device for measuring liquid absorption performance of battery, measuring method and application thereof Download PDFInfo
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- CN112858105A CN112858105A CN202110117830.2A CN202110117830A CN112858105A CN 112858105 A CN112858105 A CN 112858105A CN 202110117830 A CN202110117830 A CN 202110117830A CN 112858105 A CN112858105 A CN 112858105A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
Abstract
The invention provides a device for measuring the liquid absorption performance of a battery, a measuring method and application thereof, wherein the measuring device comprises a liquid storage device arranged at the top of the battery, electrolyte is injected into the battery and stored in the battery through the liquid storage device, a sealing structure is arranged in the liquid storage device and clings to the liquid level, and after the electrolyte is injected, the sealing structure is used for preventing the electrolyte from volatilizing and keeping the pressure in the liquid storage device unchanged; on being connected to the battery with the reservoir, inject the electrolyte and set up seal structure in to the battery through the reservoir, the battery begins work, the height of liquid level in the record reservoir. The invention measures the imbibition parameter in the working process of the battery in real time, can evaluate the imbibition capability of the battery in situ, provides important reference basis for battery manufacture, system research and development, battery service life and the like, and has the characteristics of simple structure, convenient implementation, accurate measurement and the like.
Description
Technical Field
The invention belongs to the technical field of batteries, relates to a device for measuring the liquid absorption performance of a battery, and particularly relates to a device for measuring the liquid absorption performance of the battery, a measuring method and application thereof.
Background
According to the continuous popularization of electric vehicles, people have higher and higher requirements on the electric vehicles, how to fully evaluate the performance of the battery has important significance on the use of the battery, the evaluation on the performance of the battery is equivalent to physical examination on the battery, the health state of the battery can be fully understood, and important bases are provided for screening the battery and how to use the battery. The positive plate, the negative plate and the diaphragm are important components of the lithium ion battery, and the liquid absorption performance, namely the electrolyte absorption capacity of the lithium ion battery directly influences the performance of the lithium ion battery.
At present, the method for measuring the liquid absorption performance of the battery mainly adopts the following method, wherein firstly, a pole group which is not charged and discharged is adopted for evaluation, the pole group which is not charged and discharged is mainly used for soaking the electrolyte, and the amount of the electrolyte absorbed is weighed after the pole group is fully soaked; secondly, the residual electrolyte amount in the battery is weighed before the battery is charged or tested, and then the residual electrolyte amount in the battery is weighed after the battery is fully charged or tested. The two methods cannot fully reflect the absorption speed of the electrolyte in the battery testing process, have certain errors, can only represent the total absorption amount of the electrolyte before and after the battery testing or charging and discharging, cannot ensure that a plurality of factors such as pressure change, liquid absorption amount of a battery pole group after the constraint of a steel shell is relieved and the like in the battery disassembling process influence the absorption amount of the electrolyte of the battery pole group, and in addition, the disassembling time of the battery after the testing and the like influence the absorption amount of the electrolyte of the battery pole group. Most importantly, the electrolyte suction amount in the battery testing or charging process cannot be monitored in real time, and the electrolyte suction amount of the battery pole group cannot be tested in situ.
CN106291377A discloses a method for detecting liquid absorption performance of a lithium ion battery, which comprises: the first step is as follows: weighing an object to be detected by using balance, recording the quality data of the object to be detected before liquid absorption, and then soaking the object to be detected in electrolyte, wherein the electrolyte is filled in a container; the second step is that: placing said container in a vacuum oven; the third step: heating and vacuumizing the vacuum drying oven to enable the temperature and the vacuum degree of the vacuum drying oven to respectively reach a preset temperature data interval and a preset vacuum degree value interval; the fourth step: and after the object to be detected is placed in the electrolyte in the vacuum drying box for a preset time, detecting the liquid absorption amount of the object to be detected. The invention can not monitor the liquid absorption performance of the battery in real time in the battery test and charge-discharge processes.
CN108152751A discloses a device and a method for testing liquid absorption capacity of a lithium ion battery cell, wherein the detection device comprises: the device comprises a sealed container base, a sealed container upper cover, a sliding support column, a cross beam, a digital display electronic scale, a chuck, a container, a digital display thermocouple, a heating device, an air vent and a vacuum pressure gauge. The imbibition parameters were tested by heating and pressurizing the cell. It still fails to monitor the wicking performance of the cell in real time during operation.
CN110850309A discloses a lithium ion battery electricity core liquid absorption volume testing arrangement, including the support frame, be fixed with the container that is used for holding electrolyte on the support frame, be connected with the fixture who is used for centre gripping battery electricity core through the over-and-under type of second grade elevating system on the link, slidable mounting has the sliding plate on the support frame, is equipped with the electronic scale that is used for weighing to battery electricity core on the sliding plate. According to the invention, the battery cell clamped and fixed by the clamping mechanism realizes fine adjustment of vertical height, so that the depth adjustment of the electrolyte when the battery cell extends into the container is ensured, and the sufficient absorption of the electrolyte by the battery cell is ensured. But still do not allow for measurement of the wicking performance during cell operation.
The existing liquid absorption performance measuring device has the problems of complex structure and incapability of measuring the liquid absorption performance in the working process of the battery, so that the problem that the liquid absorption performance in each stage in the working process of the battery needs to be solved urgently at present can be solved by how to measure the liquid absorption performance in each stage in the working process of the battery under the condition that the liquid absorption performance measuring device is simple in structure.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device for measuring the liquid absorption capacity of a battery, a measuring method and application thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a device for measuring the liquid absorption performance of a battery, which comprises a liquid storage device arranged at the top of the battery, wherein electrolyte is injected into the battery through the liquid storage device and is stored in the battery, a sealing structure is arranged in the liquid storage device and is close to the liquid level, and after the electrolyte is injected, the sealing structure is used for preventing the electrolyte from volatilizing and keeping the pressure in the liquid storage device unchanged.
The liquid storage device is arranged at the top of the battery, liquid absorption parameters in the working process of the battery are measured in real time through the change of the electrolyte in the liquid storage device, the electrolyte is prevented from volatilizing and the pressure in the liquid storage device is kept unchanged through the arrangement of the sealing structure, the accuracy in the measuring process is further ensured, the liquid absorption capacity of the battery in the using process can be evaluated in situ, the liquid absorption capacity of the battery is accurately measured, important reference basis is provided for the manufacturing, system development, the service life of the battery and the like of the battery, and the liquid absorption device has the characteristics of simple structure, convenience in implementation, accurate measurement and.
As a preferred technical scheme of the invention, the liquid reservoir is a transparent liquid reservoir.
Preferably, the transparent liquid reservoir is provided with liquid level scale marks.
Preferably, a liquid level sensor is arranged on the liquid reservoir and used for detecting and recording the liquid level height in the liquid reservoir.
As a preferred technical scheme of the invention, the sealing structure is a piston or a nonvolatile liquid layer.
It should be noted that, the material of the non-volatile liquid layer is not specifically required or limited, and those skilled in the art know that the material of the non-volatile liquid layer should have a density less than that of the electrolyte and not react with and dissolve in the electrolyte.
Preferably, the material of the non-volatile liquid layer comprises vaseline.
Preferably, a sealing member is arranged at the joint of the liquid reservoir and the battery, and the sealing member is used for preventing the electrolyte in the battery from leaking.
In a second aspect, the present invention provides a method for measuring a battery by using the device for measuring the liquid absorption performance of a battery according to the first aspect, the method comprising:
the method comprises the following steps of taking a battery to be tested, connecting a liquid storage device with the battery to be tested, injecting electrolyte into the battery through the liquid storage device, setting a sealing structure, working the battery to be tested, recording the height of liquid level in the liquid storage device, and obtaining liquid absorption parameters of the battery to be tested.
As a preferred technical solution of the present invention, the measuring method specifically includes the steps of:
taking a battery to be tested, forming a hole in the battery to be tested and connecting a liquid storage device, filling electrolyte into the battery to be tested through the liquid storage device, storing the electrolyte in the liquid storage device, and putting a sealing structure into the liquid storage device to prevent the electrolyte from volatilizing and keep the pressure in the liquid storage device unchanged;
(II) after the battery to be tested is placed in the sealing structure, the initial liquid level height in the liquid storage device is recorded after the battery to be tested is placed still for a certain time at a set temperature;
(III) the battery to be tested starts to work, and the liquid level height in the liquid storage device at each moment is recorded to obtain the liquid absorption parameter of the battery to be tested.
In a preferred embodiment of the present invention, in the step (I), the pressure in the liquid reservoir is 100 to 101.5kPa, for example, 100.0kPa, 100.1kPa, 100.2kPa, 100.3kPa, 100.4kPa, 100.5kPa, 100.6kPa, 100.7kPa, 100.8kPa, 100.9kPa, 101.0kPa, 101.1kPa, 101.2kPa, 101.3kPa, 101.4kPa, or 101.5 kPa.
In a preferred embodiment of the present invention, in the step (II), the set temperature is 20 to 40 ℃, for example, 20 ℃, 22 ℃, 24 ℃, 26 ℃, 28 ℃, 30 ℃, 32 ℃, 34 ℃, 36 ℃, 38 ℃ or 40 ℃.
As a preferred technical solution of the present invention, in the step (ii), the certain time is 7 to 9 hours, for example, the certain time is 7 hours, 7.2 hours, 7.4 hours, 7.6 hours, 7.8 hours, 8.0 hours, 8.2 hours, 8.4 hours, 8.6 hours, 8.8 hours or 9.0 hours.
According to the invention, the battery is kept still for 7-9 hours, so that the overall temperature in the battery reaches a set temperature, and the temperature of the whole system of the battery is stabilized.
In a third aspect, the present invention provides a use of the device for measuring the liquid absorption performance of a battery according to the first aspect, for measuring a liquid absorption parameter of the battery, wherein the liquid absorption parameter comprises the liquid absorption amount and/or the liquid absorption rate during the operation of the battery.
The recitation of numerical ranges herein includes not only the above-recited numerical values, but also any numerical values between non-recited numerical ranges, and is not intended to be exhaustive or to limit the invention to the precise numerical values encompassed within the range for brevity and clarity.
Compared with the prior art, the invention has the beneficial effects that:
the liquid storage device is arranged at the top of the battery, liquid absorption parameters in the working process of the battery are measured in real time through the change of the electrolyte in the liquid storage device, the electrolyte is prevented from volatilizing and the pressure in the liquid storage device is kept unchanged through the arrangement of the sealing structure, the accuracy in the measuring process is further ensured, the liquid absorption capacity of the battery in the using process can be evaluated in situ, the liquid absorption capacity of the battery is accurately measured, important reference basis is provided for the manufacturing, system development, the service life of the battery and the like of the battery, and the liquid absorption device has the characteristics of simple structure, convenience in implementation, accurate measurement and.
Drawings
FIG. 1 is a schematic structural diagram of a device for measuring liquid absorption performance of a battery according to an embodiment of the present invention;
FIG. 2 is a graph showing the change with time of the charging voltage and the liquid suction amount in example 1 of the present invention.
Wherein, 1-battery; 2-a liquid reservoir; 3-sealing structure; 4-a seal; 5-electrolyte.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments.
In one embodiment, the present invention provides a device for measuring the liquid absorption performance of a battery 1, as shown in fig. 1, the device comprises a liquid reservoir 2 disposed at the top of the battery 1, an electrolyte 5 is injected into the battery 1 through the liquid reservoir 2 and stored, a sealing structure 3 is disposed in the liquid reservoir 2 and closely attached to the liquid level, and after the electrolyte 5 is injected, the sealing structure 3 is used for preventing the electrolyte 5 from volatilizing and keeping the pressure in the liquid reservoir 2 constant.
According to the invention, the liquid storage device 2 is arranged at the top of the battery 1, liquid absorption parameters in the working process of the battery 1 are measured in real time through the change of the electrolyte 5 in the liquid storage device 2, the volatilization of the electrolyte 5 is prevented and the pressure in the liquid storage device 2 is kept unchanged through the arrangement of the sealing structure 3, the accuracy in the measuring process is further ensured, the liquid absorption capacity of the battery 1 in the using process can be evaluated in situ, the liquid absorption capacity of the battery 1 is accurately measured, important reference basis is provided for the manufacturing, system development, service life of the battery 1 and the like of the battery 1, and the device has the characteristics of simple structure, convenience in implementation, accurate.
Further, the liquid storage device 2 is a transparent liquid storage device 2, and liquid level scale marks (not shown in the figure) are arranged on the transparent liquid storage device 2; a liquid level sensor (not shown) is disposed on the liquid reservoir 2 and is used for detecting and recording the liquid level in the liquid reservoir 2.
Furthermore, the sealing structure 3 is a piston or a non-volatile liquid layer, and the non-volatile liquid layer is made of vaseline; the junction of the reservoir 2 and the battery 1 is provided with a seal 4, and the seal 4 is used for preventing the electrolyte 5 in the battery 1 from leaking.
In another embodiment, the present invention provides a method for measuring a battery 1 by using the above-mentioned device for measuring the liquid absorption performance of a battery 1, wherein the method specifically comprises the following steps:
taking a battery 1 to be tested, forming a hole in the battery 1 to be tested and connecting a liquid storage device 2, filling electrolyte 5 into the battery 1 to be tested through the liquid storage device 2, storing the electrolyte 5 in the liquid storage device 2, placing a sealing structure 3 in the liquid storage device 2, preventing the electrolyte 5 from volatilizing and keeping the pressure in the liquid storage device 2 unchanged, wherein the pressure in the liquid storage device 2 is 100-101.5 kPa;
(II) after the sealing structure 3 is placed, standing the battery 1 to be tested for 7-9 hours at the set temperature of 20-40 ℃, and then recording the initial liquid level height in the liquid storage device 2;
(III) the battery 1 to be tested starts to work, and the liquid level height in the liquid storage device 2 at each moment is recorded to obtain the liquid absorption parameter of the battery 1 to be tested.
Example 1
The present embodiment provides a device for measuring the liquid absorption performance of a battery 1, which is based on the measuring device described in one specific embodiment, wherein the liquid reservoir 2 is a transparent liquid reservoir 2, liquid level scale marks are arranged on the transparent liquid reservoir 2, and the sealing structure 3 is a piston.
The present embodiment further provides a method for measuring a charging process of the battery 1 by using the above apparatus for measuring the liquid absorption performance of the battery 1, wherein the method specifically includes the following steps:
taking a battery 1 to be tested, discharging the battery 1 to be tested to 2.8V (0% SOC, SOC is the charge state of the battery 1) at 25 ℃, opening a hole in the battery 1 to be tested and connecting a liquid storage device 2, filling electrolyte 5 into the battery 1 to be tested through the liquid storage device 2, storing the electrolyte 5 in the liquid storage device 2, placing a sealing structure 3 in the liquid storage device 2, preventing the electrolyte 5 from volatilizing, keeping the pressure in the liquid storage device 2 unchanged, and keeping the pressure in the liquid storage device 2 at 101.3 kPa;
(II) after the sealing structure 3 is placed, the battery 1 to be tested is kept stand for 8 hours at the set temperature of 25 ℃, and then the initial liquid level height in the liquid storage device 2 is recorded;
(III) the battery 1 to be tested starts to be charged, and the liquid level height in the liquid storage device 2 at each moment is recorded, so that the liquid absorption parameter of the battery 1 to be tested is obtained.
The liquid absorption amount at each time period during charging was calculated, and a graph showing the change in the charging voltage and the liquid absorption amount with time as shown in fig. 2 was prepared, in which the slope, i.e., the liquid absorption rate at that time point, was plotted on the curve of the liquid absorption amount with time.
Example 2
The embodiment provides a device for measuring the liquid absorption performance of a battery 1, which is based on the measuring device described in the specific embodiment, wherein a liquid level sensor is arranged on a liquid storage device 2, a sealing structure 3 is a non-volatile liquid layer, and the non-volatile liquid layer is made of vaseline.
The present embodiment further provides a method for measuring the discharging process of the battery 1 by using the above apparatus for measuring the liquid absorption performance of the battery 1, wherein the method specifically includes the following steps:
taking a battery 1 to be tested, charging the battery 1 to be tested to 4.2V (100% SOC, SOC is the charge state of the battery 1) at 25 ℃, forming a hole in the battery 1 to be tested and connecting a liquid storage device 2, filling electrolyte 5 into the battery 1 to be tested through the liquid storage device 2, storing the electrolyte 5 in the liquid storage device 2, placing a sealing structure 3 in the liquid storage device 2, preventing the electrolyte 5 from volatilizing, keeping the pressure in the liquid storage device 2 unchanged, and keeping the pressure in the liquid storage device 2 at 100 kPa;
(II) after the sealing structure 3 is placed, standing the battery 1 to be tested for 9 hours at the set temperature of 40 ℃, and recording the initial liquid level height in the liquid storage device 2;
(III) the battery 1 to be tested starts to discharge, and the liquid level height in the liquid storage device 2 at each moment is recorded to obtain the liquid absorption parameter of the battery 1 to be tested.
Example 3
The present embodiment provides a device for measuring the liquid absorption performance of a battery 1, which is based on the measuring device described in one specific embodiment, wherein the liquid reservoir 2 is a transparent liquid reservoir 2, liquid level scale marks are arranged on the transparent liquid reservoir 2, and the sealing structure 3 is a piston.
The present embodiment further provides a method for measuring a charging process of the battery 1 by using the above apparatus for measuring the liquid absorption performance of the battery 1, wherein the method specifically includes the following steps:
taking a battery 1 to be tested, discharging the battery 1 to be tested to 2.8V (0% SOC, SOC is the charge state of the battery 1) at 25 ℃, opening a hole in the battery 1 to be tested and connecting a liquid storage device 2, filling electrolyte 5 into the battery 1 to be tested through the liquid storage device 2, storing the electrolyte 5 in the liquid storage device 2, placing a sealing structure 3 in the liquid storage device 2, preventing the electrolyte 5 from volatilizing, keeping the pressure in the liquid storage device 2 unchanged, and keeping the pressure in the liquid storage device 2 at 101.3 kPa;
(II) after the sealing structure 3 is placed, the battery 1 to be tested is stood for 7 hours at the set temperature of 20 ℃, and then the initial liquid level height in the liquid storage device 2 is recorded;
(III) the battery 1 to be tested starts to be charged, and the liquid level height in the liquid storage device 2 at each moment is recorded, so that the liquid absorption parameter of the battery 1 to be tested is obtained.
Through the embodiment, the liquid storage device 2 is arranged at the top of the battery 1, the liquid absorption parameters of the battery 1 in the working process are measured in real time through the change of the electrolyte 5 in the liquid storage device 2, the volatilization of the electrolyte 5 is prevented and the pressure in the liquid storage device 2 is kept unchanged through the arrangement of the sealing structure 3, the accuracy in the measuring process is further ensured, the liquid absorption capacity of the battery 1 in the using process can be evaluated in situ, the liquid absorption capacity of the battery 1 is accurately measured, important reference basis is provided for the manufacturing, system research and development of the battery 1, the service life of the battery 1 and the like, and the liquid absorption measuring device has the characteristics of simple structure, convenience in implementation.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The device for measuring the liquid absorption performance of the battery is characterized by comprising a liquid storage device arranged at the top of the battery, electrolyte is injected into the battery through the liquid storage device and stored in the battery, a sealing structure is arranged in the liquid storage device and clings to the liquid level, and after the electrolyte is injected, the sealing structure is used for preventing the electrolyte from volatilizing and keeping the pressure in the liquid storage device unchanged.
2. A measuring device according to claim 1, wherein the reservoir is a transparent reservoir;
preferably, the transparent liquid reservoir is provided with liquid level scale marks.
3. A measuring device according to claim 1 or 2, wherein a level sensor is provided on the reservoir for detecting and recording the level of liquid in the reservoir.
4. A measuring device according to any of claims 1-3, wherein the sealing structure is a piston or a layer of non-volatile liquid;
preferably, the material of the nonvolatile liquid layer comprises vaseline;
preferably, a sealing member is arranged at the joint of the liquid reservoir and the battery, and the sealing member is used for preventing the electrolyte in the battery from leaking.
5. A method for measuring a battery by using the apparatus for measuring a liquid absorption property of a battery according to any one of claims 1 to 4, the method comprising:
the method comprises the following steps of taking a battery to be tested, connecting a liquid storage device with the battery to be tested, injecting electrolyte into the battery through the liquid storage device, setting a sealing structure, working the battery to be tested, recording the height of liquid level in the liquid storage device, and obtaining liquid absorption parameters of the battery to be tested.
6. The measurement method according to claim 5, characterized in that the measurement method comprises the following steps:
taking a battery to be tested, forming a hole in the battery to be tested and connecting a liquid storage device, filling electrolyte into the battery to be tested through the liquid storage device, storing the electrolyte in the liquid storage device, and putting a sealing structure into the liquid storage device to prevent the electrolyte from volatilizing and keep the pressure in the liquid storage device unchanged;
(II) after the battery to be tested is placed in the sealing structure, the initial liquid level height in the liquid storage device is recorded after the battery to be tested is placed still for a certain time at a set temperature;
(III) the battery to be tested starts to work, and the liquid level height in the liquid storage device at each moment is recorded to obtain the liquid absorption parameter of the battery to be tested.
7. The method according to claim 6, wherein in the step (I), the pressure in the reservoir is 100 to 101.5 kPa.
8. The method according to claim 6 or 7, wherein in the step (II), the set temperature is 20 to 40 ℃.
9. The method according to any one of claims 6 to 8, wherein in step (II), the predetermined time is 7 to 9 hours.
10. Use of a device for measuring the liquid absorption capacity of a battery as claimed in any one of claims 1 to 4, wherein the device is used for measuring liquid absorption parameters of a battery, and the liquid absorption parameters comprise the liquid absorption amount and/or the liquid absorption rate during the operation of the battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110117830.2A CN112858105A (en) | 2021-01-28 | 2021-01-28 | Device for measuring liquid absorption performance of battery, measuring method and application thereof |
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| CN202110117830.2A CN112858105A (en) | 2021-01-28 | 2021-01-28 | Device for measuring liquid absorption performance of battery, measuring method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062929A (en) * | 2021-11-15 | 2022-02-18 | 蜂巢能源科技有限公司 | Design method of lithium battery expansion space and equipment for designing lithium battery expansion space |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271316A (en) * | 2017-06-27 | 2017-10-20 | 淄博君行电源技术有限公司 | The method for testing rare earth new power battery core pick up |
| CN206930555U (en) * | 2017-07-19 | 2018-01-26 | 天津市捷威动力工业有限公司 | Lithium battery diaphragm pole piece wet-out rate test device |
| CN207976367U (en) * | 2018-03-28 | 2018-10-16 | 宜丰钜力新能源有限公司 | A kind of new device of quick detection lead accumulator AGM partition boards pressurization rate of liquid aspiration |
| CN210269498U (en) * | 2019-07-11 | 2020-04-07 | 天津市捷威动力工业有限公司 | Device for rapidly testing infiltration capacity of lithium battery electrolyte to pole piece |
| CN212008200U (en) * | 2020-01-20 | 2020-11-24 | 东莞东阳光科研发有限公司 | Pole piece imbibition capability test device |
-
2021
- 2021-01-28 CN CN202110117830.2A patent/CN112858105A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271316A (en) * | 2017-06-27 | 2017-10-20 | 淄博君行电源技术有限公司 | The method for testing rare earth new power battery core pick up |
| CN206930555U (en) * | 2017-07-19 | 2018-01-26 | 天津市捷威动力工业有限公司 | Lithium battery diaphragm pole piece wet-out rate test device |
| CN207976367U (en) * | 2018-03-28 | 2018-10-16 | 宜丰钜力新能源有限公司 | A kind of new device of quick detection lead accumulator AGM partition boards pressurization rate of liquid aspiration |
| CN210269498U (en) * | 2019-07-11 | 2020-04-07 | 天津市捷威动力工业有限公司 | Device for rapidly testing infiltration capacity of lithium battery electrolyte to pole piece |
| CN212008200U (en) * | 2020-01-20 | 2020-11-24 | 东莞东阳光科研发有限公司 | Pole piece imbibition capability test device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062929A (en) * | 2021-11-15 | 2022-02-18 | 蜂巢能源科技有限公司 | Design method of lithium battery expansion space and equipment for designing lithium battery expansion space |
| CN114062929B (en) * | 2021-11-15 | 2023-09-22 | 蜂巢能源科技有限公司 | Design method of expansion space of lithium battery and equipment for designing expansion space of lithium battery |
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