Demagnetizing structure and battery preparation system

Abstract

The utility model relates to a demagnetizing structure and a battery preparation system, the demagnetizing structure comprises a pipeline main body and a magnetic suction assembly, and the pipeline main body is provided with a first channel; the first channel is used for communicating between the stirring device and the liquid inlet module; the magnetic attraction assembly is arranged in the first channel so as to divide the first channel into at least two first sub-channels; the first sub-channel is used for transmitting the electrolyte, and the magnetic attraction assembly is used for adsorbing magnetic substances in the electrolyte, so that efficient demagnetization before the electrolyte is injected into the battery is realized, the contact area of the electrolyte and the magnetic attraction assembly is increased, the magnetic attraction assembly can fully contact and adsorb the magnetic substances in the electrolyte, and the demagnetization efficiency of the electrolyte is improved; the influence of magnetic substances in the electrolyte on the battery performance is reduced; when the demagnetizing structure needs to be cleaned, only the demagnetizing structure needs to be detached from the position between the stirring device and the liquid inlet module, and the detaching and cleaning process of the demagnetizing structure is simplified.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a demagnetization structure and a battery preparation system. Background Art

[0002] Excessive levels of magnetic material can pose a significant safety risk to lithium-ion batteries. For example, during the charge and discharge process, organic matter in the electrolyte can aggregate and grow around the magnetic material, forming sharp corners or spikes. Furthermore, this magnetic material can oxidize at the positive electrode and then reduce at the negative electrode. During this movement, the magnetic material can easily pierce the battery separator, causing an internal short circuit and rapid self-discharge, leading to heating, combustion, and even explosion. Therefore, the content of magnetic material in lithium-ion battery electrode materials must be strictly controlled during production. The level of magnetic material content is an important criterion for measuring the quality of lithium-ion battery electrode materials.

[0003] In existing demagnetization equipment, the magnetic substance in the powder material or liquid is usually adsorbed by a magnetic body, and then the magnetic body is demagnetized and the magnetic substance is washed off the magnetic body to discharge the magnetic substance. However, the adsorption effect of the magnetic substance by the existing demagnetization equipment is poor. Utility Model Content

[0004] Based on this, a demagnetization structure and a battery preparation system are provided.

[0005] In a first aspect, the present application provides a demagnetization structure, comprising:

[0006] The pipeline body is provided with a first channel; the first channel is used to communicate between the stirring device and the liquid inlet module;

[0007] The magnetic attraction component is arranged in the first channel to divide the first channel into at least two first sub-channels; the first sub-channels are used to transmit electrolyte, and the magnetic attraction component is used to absorb magnetic substances in the electrolyte.

[0008] In one embodiment, the magnetic attraction assembly includes at least two magnetic attraction plates, and the magnetic attraction plates are arranged at intervals.

[0009] In one embodiment, the magnetic plate includes at least one bent section, and the bent section of any magnetic plate is opposite to and spaced apart from the bent section of an adjacent magnetic plate;

[0010] Or the bending section of any magnetic attraction plate is staggered and spaced apart from the bending section of an adjacent magnetic attraction plate.

[0011] In one embodiment, the magnetic plate includes at least one first bending section and at least one second bending section;

[0012] Each first bending section is connected to each second bending section in an alternating manner; the protruding direction of the first bending section is opposite to the protruding direction of the second bending section.

[0013] In one embodiment, each magnetic plate is fixedly connected or detachably connected in the first channel.

[0014] In one embodiment, a plurality of limiting grooves are provided in the first channel; and each magnetic attraction plate is provided in each limiting groove in a one-to-one correspondence.

[0015] In one embodiment, the pipe body further includes a first interface and a second interface; the first channel is connected between the first interface and the second interface;

[0016] The first interface is used for detachably connecting to the stirring device, and the second interface is used for detachably connecting to the liquid inlet module.

[0017] In one embodiment, the first channel is a magnetic channel.

[0018] In one embodiment, the first channel is provided with a power supply interface group; the power supply interface group is used to connect to the power supply module.

[0019] In a second aspect, the present application provides a battery preparation system, comprising a stirring device, a liquid inlet module, and a demagnetization structure as described above; the demagnetization structure is connected between the stirring device and the liquid inlet module.

[0020] One of the above technical solutions has the following advantages and beneficial effects:

[0021] The above-mentioned demagnetization structure includes a pipe body and a magnetic attraction component, and the pipe body is provided with a first channel; the first channel is used to connect between the stirring device and the liquid inlet module; the magnetic attraction component is provided in the first channel to divide the first channel into at least two first sub-channels; the first sub-channel is used to transmit electrolyte, and the magnetic attraction component is used to adsorb magnetic substances in the electrolyte, thereby realizing efficient demagnetization of the electrolyte before it is injected into the battery. The present application divides the first channel into at least two first sub-channels by providing a magnetic attraction component, so that the electrolyte output by the stirring device can be transmitted from each first sub-channel, thereby increasing the contact area between the electrolyte and the magnetic attraction component, so that the magnetic attraction component can fully contact and adsorb the magnetic substances in the electrolyte, thereby improving the demagnetization efficiency of the electrolyte; the demagnetized electrolyte is injected into the battery through the liquid inlet module, thereby reducing the influence of the magnetic substances in the electrolyte on the battery performance, and reducing the safety performance problems of the battery such as heating, combustion, explosion, etc. caused by the magnetic substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the demagnetization structure from a first perspective in an embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the partial structure of the demagnetization structure from a first perspective in an embodiment of the present application;

[0024] Figure 3 This is a schematic structural diagram of the magnetic plate from a first perspective in an embodiment of the present application;

[0025] Figure 4 This is a schematic diagram of the partial structure of the magnetic plate from a first perspective in an embodiment of the present application;

[0026] Figure 5 Schematic diagram of the connection structure of the demagnetization structure in the embodiment of the present application.

[0027] Reference numerals:

[0028] 10. Pipeline body; 110. First channel; 112. First sub-channel; 120. First interface; 130. Second interface; 20. Magnetic assembly; 210. Magnetic plate; 212. First bending section; 214. Second bending section; 30. Stirring device; 40. Liquid inlet module. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0030] It should be noted that the terms "first," "second," and the like in the specification and claims of the present application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the numerals used in this manner are interchangeable where appropriate for the embodiments of the present application described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover inclusions that are not listed. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products, or apparatus.

[0031] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0032] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] Additionally, the term "plurality" shall mean two or more.

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In one embodiment, Figure 1 、 Figure 2 and Figure 5 As shown, a demagnetization structure is provided, including a pipe body 10 and a magnetic attraction component 20, the pipe body 10 is provided with a first channel 110; the first channel 110 is used to connect between the stirring device 30 and the liquid inlet module 40; the magnetic attraction component 20 is arranged in the first channel 110 to divide the first channel 110 into at least two first sub-channels 112; the first sub-channel 112 is used to transmit electrolyte, and the magnetic attraction component 20 is used to adsorb magnetic substances in the electrolyte.

[0036] The pipe body 10 may be cylindrical, rectangular, or elliptical. The pipe body 10 may be composed of one pipe segment. In another example, the pipe body 10 may be composed of at least two pipe segments connected in series. The pipe segments may be arranged in parallel or at a predetermined angle (e.g., 90°).

[0037] The pipe body 10 is provided with a first channel 110. The shape of the first channel 110 can be, but is not limited to, cylindrical, square, or elliptical. For example, the first channel 110 is based on a first port and a second port. The first port of the first channel 110 can be detachably connected to the output end of the stirring device 30, and the second end of the first channel 110 can be detachably connected to the input end of the liquid inlet module 40. The stirring device 30 can be used to stir the slurry to produce an electrolyte. The liquid inlet module 40 can be used to inject the demagnetized electrolyte into the battery.

[0038] The magnetic attraction component 20 can be an electromagnet component. The magnetic attraction component 20 is arranged in the first channel 110. The magnetic attraction component 20 divides the first channel 110 into at least two first sub-channels 112. When the stirring device 30 transmits electrolyte to the first port of the first channel 110, the electrolyte can enter each first sub-channel 112 for transmission, so that the magnetic attraction component 20 can fully absorb the magnetic substance in the electrolyte to achieve demagnetization of the electrolyte. The demagnetized electrolyte can be injected into the battery through the liquid inlet module 40 to avoid the impact on battery performance due to excessive content of magnetic substances in the electrolyte.

[0039] For example, after the demagnetization structure has been used for a period of time, the pipe body 10 can be removed from between the stirring device 30 and the liquid inlet module 40, thereby facilitating the cleaning of the magnetic component 20 in the pipe body 10, thereby conveniently removing the magnetic material adsorbed by the magnetic component 20 and simplifying the disassembly structure of the demagnetization structure.

[0040] In the above-mentioned demagnetization structure, a first channel 110 is provided through the pipe body 10; the first channel 110 is used to connect between the stirring device 30 and the liquid inlet module 40; the magnetic attraction component 20 is provided in the first channel 110 to divide the first channel 110 into at least two first sub-channels 112; the first sub-channel 112 is used to transmit electrolyte, and the magnetic attraction component 20 is used to adsorb magnetic substances in the electrolyte to achieve efficient demagnetization of the electrolyte before it is injected into the battery. The present application divides the first channel 110 into at least two first sub-channels 112 by setting a magnetic attraction component 20, so that the electrolyte output by the stirring device 30 can be transmitted from each first sub-channel 112, thereby increasing the contact area between the electrolyte and the magnetic attraction component 20, so that the magnetic attraction component 20 can fully contact and adsorb the magnetic substance in the electrolyte, thereby improving the demagnetization efficiency of the electrolyte; the demagnetized electrolyte is injected into the battery through the liquid inlet module 40, thereby reducing the impact of the magnetic substance in the electrolyte on the battery performance, and reducing the safety performance problems of the battery such as heating, combustion, and explosion caused by the magnetic substance; when the demagnetization structure needs to be cleaned, it is only necessary to remove the demagnetization structure from between the stirring device 30 and the liquid inlet module 40, which simplifies the disassembly and cleaning process of the demagnetization structure.

[0041] In one embodiment, Figure 1 As shown, the magnetic assembly 20 includes at least two magnetic plates 210 , and the magnetic plates 210 are arranged at intervals.

[0042] Among them, the magnetic attraction plate 210 can be a magnetic attraction plate 210 made of electromagnet material. Each magnetic attraction plate 210 is respectively arranged in the first channel 110, and each magnetic attraction plate 210 is arranged at intervals, thereby dividing the first channel 110 into at least two first sub-channels 112. It should be noted that the magnetic attraction plates 210 can be arranged at equal intervals or at non-equal intervals. The magnetic attraction plate 210 can be in a regular shape such as a flat plate or a corrugated shape; in another example, the magnetic attraction plate 210 can also be provided with a plurality of protrusions and / or recesses, and each protrusion and / or recess can be arranged regularly or irregularly.

[0043] When the stirring device 30 transmits electrolyte to the first port of the first channel 110, the electrolyte can enter each first sub-channel 112 for transmission respectively, so that each magnetic plate 210 can fully contact the electrolyte, and then can more effectively adsorb the magnetic substance in the electrolyte, thereby achieving demagnetization of the electrolyte; the demagnetized electrolyte is injected into the battery through the liquid inlet module 40, avoiding the impact of the excessive content of magnetic substances in the electrolyte on the battery performance, and reducing the accidents of battery heating, combustion, explosion, etc. caused by the excessive content of magnetic substances in the electrolyte. For example, after the demagnetization structure has been used for a period of time, the pipeline body 10 can be removed from between the stirring device 30 and the liquid inlet module 40, thereby facilitating the cleaning of each magnetic plate 210 in the pipeline body 10, and realizing the convenient removal of the magnetic substances adsorbed by each magnetic plate 210.

[0044] In one embodiment, Figure 3 As shown, the magnetic plate 210 includes at least one bending section, and any magnetic bending section is opposite to and spaced apart from the bending section of the adjacent magnetic plate 210; or any magnetic bending section is staggered and spaced apart from the bending section of the adjacent magnetic plate 210.

[0045] The shape of the bent section can be, but is not limited to, an arc, a serrated or square shape. The bending directions of the corresponding bent sections of two adjacent magnetic plates 210 are the same, thereby reducing the gap between the two adjacent magnetic plates 210 and increasing the contact area between the magnetic plates 210 and the electrolyte within the limited space of the first channel 110. When the electrolyte flows through the corresponding first sub-channel 112, the corresponding magnetic plate 210 can more fully contact the electrolyte, and the magnetic material in the electrolyte can be adsorbed on the surface of the corresponding magnetic plate 210, thereby improving the demagnetization efficiency of the electrolyte.

[0046] The two adjacent magnetic plates 210 are spaced apart, and the bent section of any one magnetic plate 210 is arranged opposite the bent section of the adjacent magnetic plate 210. This can reduce the space between the two adjacent magnetic plates 210 to form the corresponding first sub-channel 112, allowing the electrolyte flowing through the corresponding first sub-channel 112 to fully contact the corresponding magnetic plate 210, thereby increasing the contact area between the magnetic plate 210 and the electrolyte, thereby achieving a better effect of removing magnetic substances contained in the electrolyte. In another example, the two adjacent magnetic plates 210 are spaced apart, and the bent section of any one magnetic plate 210 is arranged in an interlaced manner with the bent section of the adjacent magnetic plate 210. This can increase the space between the two adjacent magnetic plates 210 to form the corresponding first sub-channel 112, thereby increasing the transmission speed of the electrolyte flowing through the corresponding first sub-channel 112 and increasing the contact area between the magnetic plate 210 and the electrolyte.

[0047] It should be noted that the bottom of the first channel 110 is spaced apart from the adjacent magnetic plates 210, and the bottom of the first channel 110 and the adjacent magnetic plates 210 are enclosed to form a corresponding first sub-channel 112. The top of the first channel 110 is spaced apart from the adjacent magnetic plates 210, and the top of the first channel 110 and the adjacent magnetic plates 210 are enclosed to form a corresponding first sub-channel 112, thereby dividing the first channel 110 into a plurality of first sub-channels 112. When the electrolyte is transmitted in each first sub-channel 112, the magnetic plates 210 can fully contact and absorb the magnetic substances in the electrolyte, thereby improving the demagnetization efficiency of the electrolyte.

[0048] In one embodiment, Figure 4 As shown, the magnetic plate 210 includes at least one first bending section 212 and at least one second bending section 214; each first bending section 212 is staggeredly connected with each second bending section 214; the protruding direction of the first bending section 212 is opposite to the protruding direction of the second bending section 214.

[0049] Each first bending segment 212 and each second bending segment 214 are integrally formed, and have the same shape and size as the second bending segment 214. In another example, the shape of the first bending segment 212 and the shape of the second bending segment 214 can be different, and the size of the first bending segment 212 and the size of the second bending segment 214 can be different.

[0050] Each first bending section 212 is staggered with each second bending section 214, that is, any first bending section 212 is adjacent to the corresponding second bending section 214, and the convex direction of the first bending section 212 is set to be opposite to the convex direction of the second bending section 214, so that the magnetic plate 210 has a corrugated structure. By setting each magnetic plate 210 at intervals in the first channel 110, the electrolyte output by the stirring device 30 can be transmitted from each first sub-channel 112, thereby increasing the contact area between the electrolyte and the corresponding magnetic plate 210. Therefore, each magnetic attraction plate 210 can fully contact and absorb the magnetic substance in the electrolyte, thereby improving the demagnetization efficiency of the electrolyte; the demagnetized electrolyte is injected into the battery through the liquid inlet module 40, thereby reducing the influence of the magnetic substance in the electrolyte on the battery performance, and reducing the safety performance problems of the battery such as heating, combustion, and explosion caused by the magnetic substance; when the demagnetization structure needs to be cleaned, it is only necessary to remove the demagnetization structure from between the stirring device 30 and the liquid inlet module 40, and then the magnetic attraction plates 210 in the demagnetization structure can be disassembled and cleaned.

[0051] In one embodiment, each magnetic plate 210 is fixedly connected or detachably connected to the first channel 110 .

[0052] Each magnetic plate 210 can be fixedly mounted in the first channel 110 by welding or bonding. After the demagnetization structure has been used for a period of time, it can be removed from between the stirring device 30 and the liquid inlet module 40. After the removed demagnetization structure is powered off, each magnetic plate 210 is demagnetized, thereby removing and cleaning the magnetic material adsorbed on the inside of each magnetic plate 210. After the magnetic material adsorbed on the magnetic plate 210 is removed, the demagnetization structure can be reinstalled between the stirring device 30 and the liquid inlet module 40 to achieve reuse of the demagnetization structure.

[0053] The magnetic plates 210 can also be arranged in the first channel 110 through detachable connection. For example, the magnetic plates 210 can be arranged in the first channel 110 through clamping, and for example, a plurality of limiting grooves are arranged in the first channel 110; each magnetic plate 210 is arranged in each limiting groove one by one, thereby facilitating assembly of each magnetic plate 210. By clamping each magnetic plate 210 on the corresponding limiting groove in the first channel 110, the first channel 110 is divided into each first sub-channel 112, thereby the electrolyte output by the stirring device 30 can be transmitted from each first sub-channel 112, increasing the contact area of the electrolyte with each magnetic plate 210, so that each magnetic plate 210 can fully contact and adsorb the magnetic substances in the electrolyte, improving the demagnetization efficiency of the electrolyte; the demagnetized electrolyte is injected into the battery through the liquid inlet module 40, thereby reducing the influence of the magnetic substances in the electrolyte on the performance of the battery, reducing the safety performance problems such as heating, burning and explosion of the battery caused by the magnetic substances; when the demagnetization structure needs to be cleaned, only one end of the demagnetization structure needs to be taken out from the first channel 110, and each magnetic plate 210 can be taken out, thereby the magnetic substances adsorbed by each magnetic plate 210 can be cleaned; after the magnetic substances adsorbed by the magnetic plates 210 are removed, the magnetic plates 210 can be inserted into the corresponding limiting grooves in the first channel 110 again, realizing the reuse of the demagnetization structure.

[0054] For example, the magnetic plate 210 can be arranged in the first channel 110 by magnetic attraction. For example, the first channel 110 is a magnetic channel, and the first channel 110 can be a channel made of an electromagnet. Thus, the magnetic plate 210 can be arranged in the first channel 110 by magnetic attraction, so as to divide the first channel 110 into first sub-channels 112. Thus, the electrolyte output by the stirring device 30 can be transmitted from the first sub-channels 112, and the contact area between the electrolyte and the magnetic surface (the surface of the first channel 110 and the magnetic plate 210) can be further increased. Thus, the surface of the first channel 110 and the magnetic plate 210 can fully contact and adsorb the magnetic substances in the electrolyte, and the demagnetization efficiency of the electrolyte can be further improved. After demagnetization, the electrolyte is injected into the battery through the liquid inlet module 40, so as to reduce the influence of the magnetic substances in the electrolyte on the performance of the battery, and reduce the safety performance problems such as heating, burning and explosion of the battery caused by the magnetic substances. When the demagnetization structure needs to be cleaned, the demagnetization structure can be removed from between the stirring device 30 and the liquid inlet module 40, and the removed demagnetization structure can be powered off. Thus, the magnetic plate 210 and the first channel 110 can be demagnetized, so as to remove the magnetic substances adsorbed in the magnetic plate 210 and the first channel 110. After the magnetic substances adsorbed by the magnetic plate 210 and the first channel 110 are removed, the demagnetization structure can be reinstalled between the stirring device 30 and the liquid inlet module 40, so as to realize the reuse of the demagnetization structure. It should be noted that the pipeline body 10 can also be an electromagnet pipeline body 10.

[0055] In one embodiment, as shown in FIG. 1, Figure 5 The pipeline body 10 further includes a first interface 120 and a second interface 130. The first channel 110 is connected between the first interface 120 and the second interface 130. The first interface 120 is used for detachably connecting the stirring device 30, and the second interface 130 is used for detachably connecting the liquid inlet module 40.

[0056] The first interface 120 can be arranged at the first port of the first channel 110 by screwing, welding or inserting, so as to realize the connection between the first interface 120 and the first channel 110. The second interface 130 can be arranged at the second port of the first channel 110 by screwing, welding or inserting, so as to realize the connection between the second interface 130 and the first channel 110.

[0057] The first interface 120 can be connected to the stirring device 30 through plug-in, clamping or screwing, etc. The second interface 130 can be connected to the liquid inlet module 40 through plug-in, clamping or screwing, etc. When the stirring device 30 transmits the electrolyte to the first channel 110, the electrolyte can enter each first sub-channel 112 for transmission, so that the magnetic attraction assembly 20 can fully adsorb the magnetic substances in the electrolyte, and the demagnetization of the electrolyte can be realized. When the demagnetization structure is used for a period of time, the first interface 120 of the pipeline body 10 can be detached from the stirring device 30, and the second interface 130 of the pipeline body 10 can be detached from the liquid inlet module 40, so that the magnetic attraction assembly 20 in the detached pipeline body 10 can be conveniently cleaned, the magnetic substances adsorbed by the magnetic attraction assembly 20 can be conveniently removed, and the disassembly structure of the demagnetization structure is simplified. After the magnetic substances adsorbed by the magnetic attraction assembly 20 are removed, the first interface 120 of the pipeline body 10 is connected to the stirring device 30 again, and the second interface 130 of the pipeline body 10 is connected to the liquid inlet module 40 again, so that the demagnetization structure can be reused, and the assembly convenience and cleaning convenience of the demagnetization structure are improved.

[0058] In one embodiment, the first channel 110 is provided with a power supply interface group; the power supply interface group is used for connecting a power supply module.

[0059] The power supply interface group can include a positive power supply interface and a negative power supply interface, the power supply module is electrically connected to the positive power supply interface and the negative power supply interface respectively, the first channel 110 is electrically connected to the magnetic attraction assembly 20, when the power supply module is powered on, the magnetic attraction assembly 20 is in a magnetic attraction state, and when the electrolyte enters the first sub-channel 112 for transmission, the magnetic attraction assembly 20 can fully adsorb the magnetic substances in the electrolyte, and the demagnetization of the electrolyte can be realized. When the demagnetization structure is used for a period of time, the pipeline body 10 is detached from the stirring device 30 and the liquid inlet module 40, and the detached pipeline body 10 is powered off, so that the magnetic attraction assembly 20 is in a demagnetization state, and the magnetic attraction assembly 20 in the detached pipeline body 10 can be conveniently cleaned, the magnetic substances adsorbed by the magnetic attraction assembly 20 can be conveniently removed, and the disassembly structure of the demagnetization structure is simplified.

[0060] In one embodiment, the application provides a battery preparation system, which includes a stirring device, a liquid inlet module and a demagnetization structure according to any one of the above embodiments; the demagnetization structure is connected between the stirring device and the liquid inlet module.

[0061] The specific description of the stirring device, the liquid inlet module and the demagnetization structure can be referred to the specific description of the stirring device, the liquid inlet module and the demagnetization structure in the above embodiments, which will not be repeated here.

[0062] By setting the demagnetization structure between the stirring device and the liquid inlet module, the demagnetization structure includes a pipeline body and a magnetic attraction component, and a first channel is set through the pipeline body; the first channel is used to connect between the stirring device and the liquid inlet module; the magnetic attraction component is set in the first channel to divide the first channel into at least two first sub-channels; the first sub-channel is used to transmit electrolyte, and the magnetic attraction component is used to adsorb magnetic substances in the electrolyte, thereby achieving efficient demagnetization of the electrolyte before it is injected into the battery.

[0063] In the above embodiment, the first channel is divided into at least two first sub-channels by arranging a magnetic attraction component, and the electrolyte output by the stirring device can be transmitted from each first sub-channel, thereby increasing the contact area between the electrolyte and the magnetic attraction component, so that the magnetic attraction component can fully contact and adsorb the magnetic substance in the electrolyte, thereby improving the demagnetization efficiency of the electrolyte; the demagnetized electrolyte is injected into the battery through the liquid inlet module, thereby reducing the influence of the magnetic substance in the electrolyte on the battery performance, and reducing the safety performance problems of the battery such as heating, combustion, and explosion caused by the magnetic substance; when the demagnetization structure needs to be cleaned, it is only necessary to remove the demagnetization structure from between the stirring device and the liquid inlet module, thereby simplifying the disassembly and cleaning process of the demagnetization structure.

[0064] It should be noted that the battery preparation system may also include components such as a transmission mechanism. The specific battery preparation system may include more components than those described in the above embodiments, or combine certain components, or have a different component arrangement.

[0065] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A demagnetization structure, characterized in that: include: a pipe body, wherein the pipe body is provided with a first channel; The first channel is used to communicate between the stirring device and the liquid inlet module; a magnetic attraction component, the magnetic attraction component being disposed in the first channel to divide the first channel into at least two first sub-channels; The first sub-channel is used to transmit electrolyte, and the magnetic attraction component is used to absorb magnetic substances in the electrolyte.

2. The demagnetization structure according to claim 1, characterized in that: The magnetic attraction component includes at least two magnetic attraction plates, and the magnetic attraction plates are arranged at intervals.

3. The demagnetization structure according to claim 2, characterized in that: The magnetic plate includes at least one bent section, and the bent section of any magnetic plate is opposite to and spaced apart from the bent section of an adjacent magnetic plate; Or the bent section of any one of the magnetic attraction plates is staggered and spaced apart from the bent section of the adjacent magnetic attraction plate.

4. The demagnetization structure according to claim 2, characterized in that: The magnetic plate includes at least one first bending section and at least one second bending section; Each of the first bending sections is connected to each of the second bending sections in an alternating manner; and a protruding direction of the first bending section is opposite to a protruding direction of the second bending section.

5. The demagnetization structure according to claim 2, characterized in that: Each of the magnetic plates is fixedly connected or detachably connected in the first channel.

6. The demagnetization structure according to claim 5, characterized in that: A plurality of limiting grooves are provided in the first channel; and the magnetic plates are provided in a one-to-one correspondence with the limiting grooves.

7. The demagnetization structure according to claim 1, characterized in that: The pipeline body further includes a first interface and a second interface; the first channel is connected between the first interface and the second interface; The first interface is used for detachably connecting to the stirring device, and the second interface is used for detachably connecting to the liquid inlet module.

8. The demagnetization structure according to any one of claims 1 to 7, characterized in that: The first channel is a magnetic channel.

9. The demagnetization structure according to claim 8, characterized in that: The first channel is provided with a power supply interface group; the power supply interface group is used to connect to the power supply module.

10. A battery preparation system, characterized in that: It comprises a stirring device, a liquid inlet module and a demagnetization structure according to any one of claims 1 to 9; the demagnetization structure is connected between the stirring device and the liquid inlet module.

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