CN210921971U - Battery cell baking equipment - Google Patents
Battery cell baking equipment Download PDFInfo
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- CN210921971U CN210921971U CN201921854244.0U CN201921854244U CN210921971U CN 210921971 U CN210921971 U CN 210921971U CN 201921854244 U CN201921854244 U CN 201921854244U CN 210921971 U CN210921971 U CN 210921971U
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Abstract
The utility model discloses an electric core baking equipment belongs to battery manufacture equipment technical field, which comprises a bod, set up the inner chamber in the organism, a heating mechanism for heating the inner chamber, a dry gas conveying mechanism for being used for carrying dry gas to the evacuation mechanism of inner chamber evacuation and being used for to the interior intracavity, be provided with water content detection mechanism in the inner chamber, temperature-detecting mechanism, vacuum detection mechanism and platform of weighing, water content detection mechanism is arranged in measuring the water content in the interior intracavity gas, the platform of weighing is configured into the initial mass who supports electric core and measure electric core. The utility model discloses a gaseous water content of water content detection mechanism real-time measurement intracavity, through the initial quality of weighing platform measurement electric core, when the ratio of the gaseous water content of intracavity and the initial quality of electric core is less than the default, confirm that electric core toasts and targets in place, not only improve the uniformity of electric core water content, can improve moreover and toast the productivity.
Description
Technical Field
The utility model relates to a battery manufacture equipment technical field especially relates to an electricity core toasts equipment.
Background
The lithium cell toasts the drying and is the essential key process of present lithium cell manufacturing, and its degree and the uniformity of toasting dry directly influence the performance quality of lithium cell, but always, toasting of lithium cell all adopts the time control method, under the prerequisite of confirming the oven function, toasts the toasting of time completion lithium cell through the specified oven, and this kind of mode of toasting has apparent defect, mainly shows: different batches of lithium cell initial stage moisture often is different in different seasons, has very big difference even, and initial moisture is few just dries easily, and the time of toasting that initial moisture is many will be some long, according to the same time of toasting or some time of toasting overlength, or some toast inadequately, toast the in-process in lithium cell batch automation, and every case electric core all goes the selective examination, even the selective examination has not necessarily represented this case of electric core and has just toasted in place. In order to ensure that the battery cells can be baked in place, the baking time of the battery cells can be prolonged as much as possible, so that the baking capacity is influenced, and the energy is greatly wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electricity core toasts equipment to solve the want that exists among the prior art and ensure that electricity core all toasts and target in place, can only prolong the toasting time of electricity core as far as possible, thereby the productivity that the influence toasted causes the very big extravagant problem of the energy.
As the conception, the utility model adopts the technical proposal that:
the utility model provides an electric core toasts equipment, includes the organism, set up in inner chamber in the organism, be used for right the inner chamber carries out the heating mechanism that heats, be used for right the evacuation mechanism of inner chamber evacuation and be used for to the dry gas conveying mechanism of dry gas is carried to the inner chamber, the intracavity is provided with and is used for measuring water content detection mechanism, temperature detection mechanism and the vacuum detection mechanism and the platform of weighing of water content in the gas of inner chamber, the platform of weighing is configured into and supports electric core and measure the initial quality of electric core.
Further, the weighing platform is an electronic scale.
Further, the water content detection mechanism is a water content tester.
Further, dry gas conveying mechanism includes dry gas supply structure and conveyer pipe, conveyer pipe one end connect in dry gas supply structure, the other end communicate in the inner chamber, be provided with first control valve on the conveyer pipe.
Further, the vacuumizing mechanism comprises a vacuum pump and a connecting pipe, one end of the connecting pipe is connected with the vacuum pump, the other end of the connecting pipe is communicated with the inner cavity, and a second control valve is arranged on the connecting pipe.
Further, heating mechanism includes the heat-conducting plate and set up in heater strip on the heat-conducting plate, the heat-conducting plate set firmly in the inner chamber.
Further, a box door is arranged on the machine body, the box door can close or open the inner cavity, and a handle is arranged on the box door.
The utility model has the advantages that:
the utility model provides an equipment is toasted to electric core, through including intracavity set up water content detection mechanism and weighing platform, can the real-time measurement interior intracavity gaseous water content and the initial quality of electric core, then judge through the ratio of the gaseous water content of interior intracavity and the initial quality of electric core whether toast and target in place, and when the ratio of the gaseous water content of intracavity and the initial quality of electric core is less than the default including, confirm to toast and target in place, can come the control according to the initial quality of different batches of electric core and toast the time, not only improve the uniformity of the water content of interior intracavity electric core, and can improve and toast the productivity, avoid the waste of the energy.
Drawings
Fig. 1 is the utility model discloses a battery core toasts the schematic diagram of equipment.
In the figure:
1. a body; 11. an inner cavity; 2. a heating mechanism; 3. a vacuum pumping mechanism; 4. a dry gas delivery mechanism; 5. a temperature detection mechanism; 6. a water content detection mechanism; 7. a vacuum degree detection mechanism; 8. a weighing platform;
10. and (5) battery cores.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1, the present embodiment provides a battery cell baking device, where the battery cell baking device includes a machine body 1, an inner cavity 11 is provided in the machine body 1, and a battery cell 10 is placed in the inner cavity 11 for baking. This electric core toasts equipment still includes and is used for carrying out the heating mechanism 2 that heats to inner chamber 11, be used for carrying out the evacuation mechanism 3 of vacuum pumping to inner chamber 11 and be used for carrying the dry gas conveying mechanism 4 of dry gas to inner chamber 11, still be provided with water content detection mechanism 6 in the above-mentioned inner chamber 11, temperature-detecting mechanism 5, vacuum detection mechanism 7 and weighing platform 8, water content detection mechanism 6 is used for detecting the water content in the inner chamber 11 internal gas, temperature-detecting mechanism 5 is used for detecting the temperature in the inner chamber 11. The vacuum degree detection mechanism is used for detecting the vacuum degree in the inner cavity 11. The weighing platform 8 is used to support the cell 10 and measure the initial mass of the cell 10. The battery core baking equipment further comprises a controller, wherein the controller is a PLC (programmable logic controller), and the controller is electrically connected with the heating mechanism 2, the vacuumizing mechanism 3, the dry gas conveying mechanism 4, the water content detection mechanism 6, the temperature detection mechanism 5 and the vacuum degree detection mechanism 7 respectively.
Further, in this embodiment, weighing platform 8 is the electronic scale that can high temperature resistance, and of course in other embodiments, weighing platform 8 can also include the support frame, is provided with the ladder groove on the support frame, has set up the backup pad on the ladder face in ladder groove, is provided with the inductor of weighing between four angles of backup pad and the ladder face, and the inductor of weighing is connected in the controller, can will detect weight information and send to the controller, and the controller reachs the quality of electric core 10 after calculating.
Further, the water content detection mechanism 6 is a water content test, such as a vaisala dew point meter.
Further, dry gas conveying mechanism 4 includes dry gas supply structure and conveyer pipe, and conveyer pipe one end is connected in dry gas supply structure, and the other end communicates in inner chamber 11, is provided with first control valve on the conveyer pipe, and when first control valve opened, dry gas supply structure can be through conveyer pipe to the interior dry gas of 11 transport of inner chamber.
Further, the vacuumizing mechanism 3 comprises a vacuum pump and a connecting pipe, one end of the connecting pipe is connected to the vacuum pump, the other end of the connecting pipe is communicated with the inner cavity 11, and a second control valve is arranged on the connecting pipe. When the second control valve is opened, the vacuum pump can vacuumize the inner cavity 11 through the connecting pipe.
Further, the heating mechanism 2 comprises a heat conducting plate and a heating wire arranged on the guide plate, and the heat conducting plate is fixedly connected in the inner cavity 11. The controller heats or stops heating the inner cavity 11 by controlling the on-off of the current in the heating wire.
Further, a box door (not shown in the figure) is arranged on the machine body 1, the box door can open or close the inner cavity 11, and a handle is arranged on the box door, so that an operator can open or close the box door conveniently.
The battery cell baking equipment provided by the embodiment can bake the battery cell 10, and after the battery cell 10 is placed on the weighing platform 8 of the inner cavity 11, the weighing platform 8 sends the measured information to the controller to obtain the initial mass of the battery cell 10. And then, the box door is closed, the second control valve is opened, the first control valve is closed, and the controller controls the heating mechanism 2 and the vacuumizing mechanism 3 to start working until the temperature in the inner cavity 11 reaches the preset temperature T and the vacuum degree reaches the preset vacuum degree P. Reach at the temperature of inner chamber 11 and predetermine temperature T, after vacuum reached predetermineeing vacuum P, toast electric core 10 under this environment to toast first preset time, the inside free water of electric core 10 and combine water gasification gradually, enter into the gas environment of inner chamber 11, at this in-process, the water content in the inner chamber 11 increases gradually, the aforesaid is predetermine temperature T and is predetermine vacuum P and all can set up according to actual need. Then, the second control valve is closed, the first control valve is opened, and the dry gas is introduced into the inner cavity 11 until the air pressure in the inner cavity 11 reaches the normal pressure (the atmospheric pressure in the external environment). And then vacuumizing the inner cavity 11 again until the vacuum degree of the inner cavity 11 reaches a preset vacuum degree P, then continuously baking for a first preset time, then filling dry gas into the inner cavity 11 again until the pressure in the inner cavity 11 reaches normal pressure, repeating the two processes until the ratio of the water content of the gas in the inner cavity 11 to the initial mass of the battery cell 10 is less than or equal to the preset value, then stopping heating, and filling the dry gas into the inner cavity 11 until the pressure in the inner cavity 11 reaches normal pressure.
Specifically, the water content of the gas in the inner cavity 11 is detected in real time through the water content detection mechanism 6 and the controller. When the battery cell 10 is baked, after the nth time of air inflation and drying, the water content y of the gas in the inner cavity 11 is (An + Bn)/(An + Bn + Z), where An is the mass of the water in the inner cavity 11 after the nth time of vacuum pumping is finished; bn is the mass of water in the battery cell 10 diffused into the inner cavity 11 in the nth dry gas charging process; z is the quality of the dry gas that lets in to the inner chamber 11 at every turn, and Z is the definite value, can set up according to actual need. Both An and Bn are related to n, and the larger the value of n, the smaller both An and Bn. When the battery cell 10 is baked, the water content Y of the battery cell 10 after the nth drying gas charging is equal to Mn/M, where Mn is the residual water quality inside the battery cell 10 after the nth drying gas charging, and M is the initial quality of the battery cell. Since the mass Z of the drying gas per flush into the inner cavity 11 is much greater than An and Bn, it can be deduced that y ≈ An + Bn)/Z. Since Mn is positively correlated with (An + Bn), the larger Mn, it is understood that the larger (An + Bn), the larger the Mn, indicates that the mass of water remaining in the battery cell 10 is relatively greater after n times of dry gas charging, so that Y M Y Z can be deduced from Y M Mn a An a + Bn a Y Z, and since Z is a fixed value, Y/M is finally obtained, that is, Y is positively correlated with Y/M, and the larger Y/M, the larger Y is; the smaller the Y/M is, the smaller the Y is, so that the moisture content in the battery cell 10 can be judged by judging the Y/M, when the value of the Y/M is less than or equal to the preset value, it can be judged that the battery cell 10 is baked in place, and at this time, baking can be stopped. The preset value can be set according to actual needs, and can be obtained through multiple tests.
The water existing in the battery cell 10 is mainly divided into bound water and unbound water, the temperature of the battery cell 10 is increased in the baking process of the battery cell 10, and in the first stage, the water content of the battery cell 10 is gradually reduced mainly by the external diffusion of the unbound water; in the second stage, the water content of the battery cell 10 is further reduced by mainly using the external diffusion of the unbound water and the internal diffusion of the bound water; in the third stage, the water content of the battery cell 10 is further reduced by mainly utilizing the outer diffusion of the bound water; in the fourth stage, the diffusion rate of moisture in the battery cell 10 is the same as the moisture adsorption rate of the battery cell 10, and the water content of the battery cell 10 tends to be stable. In the process of baking the battery cell 10, in the vacuum baking process, moisture in the battery cell 10 is volatilized into the inner cavity 11, and the water content of gas in the inner cavity 11 is gradually increased; in the process of filling the drying gas, the drying gas enters the inner cavity 11, the total amount of the gas in the inner cavity 11 is increased, and the water content of the gas in the inner cavity 11 is rapidly reduced. In the next evacuation process, the gas in the inner chamber 11 is taken out, and the moisture that volatilizes in the electricity core 10 this moment is discharged from the inner chamber 11, and at this in-process because heating mechanism 2 is in the course of the work all the time, consequently the water content of the gaseous also can rise gradually in the inner chamber 11, stops until the evacuation process, toasts the in-process in the vacuum afterwards, and the water content of the gaseous inner chamber 11 still can rise gradually, lets in dry gas until next time. In summary, the water content in the battery cell 10 and the water content in the inner cavity 11 are related, so that the water content in the battery cell 10 can be judged by the water content of the gas in the inner cavity 11.
In summary, the battery cell baking device provided in this embodiment, through setting the water content detection mechanism 6 and the weighing platform 8 in the inner cavity 11, the water content of the gas in the inner cavity 11 and the initial mass of the battery cell 10 can be measured in real time, then it is determined whether the battery cell 10 is baked in place through the ratio of the water content of the gas in the inner cavity 11 to the initial mass of the battery cell 10, and when the ratio of the water content of the gas in the inner cavity 11 to the initial mass of the battery cell 10 is smaller than a preset value, it is determined that the battery cell is baked in place, the baking time can be controlled according to the initial mass of the battery cells 10 of different batches, the uniformity of the water content of the battery cell 10 in the inner cavity 11 is improved, the baking.
The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides an electric core toasts equipment, its characterized in that, include organism (1), set up in inner chamber (11) in organism (1), be used for right heating mechanism (2) that inner chamber (11) go on heating, be used for right evacuation mechanism (3) of inner chamber (11) evacuation and be used for to dry gas conveying mechanism (4) of dry gas in inner chamber (11), be provided with water content detection mechanism (6), temperature detection mechanism (5), vacuum detection mechanism (7) and platform of weighing (8) in inner chamber (11), water content detection mechanism (6) are used for measuring water content in the inner chamber (11) gas, platform of weighing (8) are configured into support electric core (10) and measure the initial quality of electric core (10).
2. The cell baking apparatus according to claim 1, wherein the weighing platform (8) is an electronic scale.
3. The cell baking apparatus according to claim 1, wherein the water content detection mechanism (6) is a water content tester.
4. The cell baking apparatus according to claim 1, wherein the dry gas delivery mechanism (4) includes a dry gas supply structure and a delivery pipe, one end of the delivery pipe is connected to the dry gas supply structure, the other end of the delivery pipe is communicated with the inner cavity (11), and a first control valve is disposed on the delivery pipe.
5. The cell baking apparatus according to claim 1, wherein the vacuum pumping mechanism (3) comprises a vacuum pump and a connecting pipe, one end of the connecting pipe is connected to the vacuum pump, the other end of the connecting pipe is communicated with the inner cavity (11), and a second control valve is arranged on the connecting pipe.
6. The cell baking apparatus according to claim 1, wherein the heating mechanism (2) includes a heat conducting plate and a heating wire disposed on the heat conducting plate, and the heat conducting plate is fixedly disposed in the inner cavity (11).
7. The battery cell baking device according to claim 1, wherein a door is disposed on the machine body (1), the door can close or open the inner cavity (11), and a handle is disposed on the door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921854244.0U CN210921971U (en) | 2019-10-30 | 2019-10-30 | Battery cell baking equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921854244.0U CN210921971U (en) | 2019-10-30 | 2019-10-30 | Battery cell baking equipment |
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| CN210921971U true CN210921971U (en) | 2020-07-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767942A (en) * | 2019-10-30 | 2020-02-07 | 东莞维科电池有限公司 | Battery cell baking method and baking equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767942A (en) * | 2019-10-30 | 2020-02-07 | 东莞维科电池有限公司 | Battery cell baking method and baking equipment |
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