CN116557615B

CN116557615B - Electromagnetic liquid discharge valve, battery and electricity utilization device

Info

Publication number: CN116557615B
Application number: CN202310846269.0A
Authority: CN
Inventors: 岳贵成; 黄嘉玮; 刘逸飞; 潘鑫; 刘磊
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2023-12-01
Anticipated expiration: 2043-07-11
Also published as: CN116557615A

Abstract

The application discloses an electromagnetic liquid discharge valve, a battery and an electricity utilization device, wherein the electromagnetic liquid discharge valve comprises: the valve body is internally provided with an accommodating space, a first opening communicated with the accommodating space is formed at the first end of the valve body, and a second opening communicated with the accommodating space is formed on the side wall of the valve body; an electromagnet arranged in the accommodating space and opposite to the first opening; the magnet piston is arranged in the accommodating space and covers the first opening; one end of the movable connecting piece is connected with the electromagnet, and the other end of the movable connecting piece is connected with the magnet piston; when the electromagnet is not electrified, the magnet piston is positioned at the first opening, when the electromagnet is electrified, the magnet piston moves towards the electromagnet, and the first opening and the second opening are communicated through the accommodating space. Through the mode, the electromagnet is used for attracting the magnet piston to move, so that the first opening at one end of the valve body and the second opening at the side edge are conducted, and the structure is simple.

Description

Electromagnetic liquid discharge valve, battery and electricity utilization device

Technical Field

The application belongs to the field of batteries, and particularly relates to an electromagnetic liquid discharge valve, a battery and an electric device.

Background

In some vehicles, particularly electric or hybrid vehicles, a large number of batteries are required to power the vehicle. In the battery, a cooling device is usually provided to cool down the battery in order to ensure that the battery is not too high in temperature and that problems such as combustion occur. In the cooling device, the cooling effect and the cost of the liquid cooling device are good, and the cooling device is suitable for mass application.

In some cases, in order to prevent the coolant in the cooling device from leaking, the coolant contacts the battery cell, affecting the working condition of the battery cell, a liquid sensor and a drain valve are provided, and the coolant is discharged. After the liquid sensor senses the cooling liquid, the drain valve is controlled to be opened, so that the cooling liquid is discharged. The existing drain valve has a relatively complex structure.

Disclosure of Invention

The application provides an electromagnetic liquid discharge valve, a battery and an electricity utilization device, which can solve the problem of complex structure of a drain valve in the battery.

In order to solve the technical problems, the application adopts a technical scheme that: there is provided an electromagnetic drain valve comprising: the valve body is provided with a containing space, a first opening communicated with the containing space is formed at the first end of the valve body, and a second opening communicated with the containing space is formed on the side wall of the valve body; an electromagnet arranged in the accommodating space and opposite to the first opening; the magnet piston is arranged in the accommodating space and covers the first opening; one end of the movable connecting piece is connected with the electromagnet, and the other end of the movable connecting piece is connected with the magnet piston; when the electromagnet is not electrified, the magnet piston is positioned at the first opening, when the electromagnet is electrified, the magnet piston moves towards the electromagnet, and the first opening and the second opening are communicated through the accommodating space.

Through the mode, the electromagnet is used for attracting the magnet piston to move, so that the first opening at one end of the valve body and the second opening at the side edge are conducted, and the structure is simple.

In some embodiments, the moveable connection is an elastic member.

The elastic piece can drive the magnet piston to restore after the electromagnet is powered off, and the first opening is continuously covered, so that the structure is simple, and other control components are not required to be added.

In some embodiments, a third opening is formed at the second end of the valve body, the third opening is communicated with one end of the accommodating space far away from the first opening, the electromagnet is arranged at the third opening and covers the third opening, and the first end and the second end of the valve body are arranged opposite to each other.

The arrangement mode enables only the movable connecting piece to be connected between the electromagnet and the magnet piston, and no other obstruction exists, so that attractive force between the magnet and the magnet piston can be enhanced.

In some embodiments, a side wall of the valve body is provided with a fourth opening at one side of the second end of the valve body, the fourth opening is communicated with the third opening, the electromagnet is provided with a plurality of protruding parts, and the protruding parts are arranged in the fourth opening.

The arrangement of the fourth opening ensures that the position of the electromagnet is fixed and cannot slide into the accommodating space along the third opening.

In some embodiments, the fourth opening is formed in plurality, and a plurality of the fourth openings are disposed around the second end of the valve body.

This arrangement makes the electromagnet more stable and no tilting occurs.

In some embodiments, a seal is disposed on an inner sidewall of the first end of the valve body, the seal disposed around the magnet piston, and the seal is in releasable interference connection with the magnet piston.

The sealing element can prevent liquid and the like from penetrating through the gap between the valve body and the magnet piston, and has good anti-penetration effect.

In some embodiments, the valve body has a groove formed in an inner sidewall of the first end, and the seal is disposed in the groove.

The sealing element can be fixed through the arrangement of the grooves, the sealing element is prevented from moving, and the anti-seepage effect of the sealing element is stabilized.

In some embodiments, the first opening has a cross-sectional area perpendicular to the length direction of the valve body that is smaller than a cross-sectional area of the receiving space perpendicular to the length direction of the valve body.

The first opening is smaller, so that the magnet piston can be prevented from falling out of the accommodating space, and the magnet piston is limited.

In some embodiments, the second opening is formed in plurality, and the plurality of second openings are spaced around the sidewall of the valve body.

The arrangement mode ensures the integral strength of the valve body and simultaneously can discharge liquid as much as possible.

In some embodiments, the first end of the valve body is provided with a connecting portion, the connecting portion is formed by extending the first end of the valve body to be perpendicular to the length direction of the valve body, and the connecting portion is provided with a fixing hole.

The connecting portion can make the electromagnetic drain valve and the external member easier to connect.

In some embodiments, the cross section of the magnet piston in the direction perpendicular to the length direction of the valve body is the same as the cross section of the accommodating space in the length direction of the valve body.

This arrangement allows the magnet piston to be adapted to the receiving space, just to be movable along the receiving space.

In order to solve the technical problems, the application adopts a technical scheme that: the utility model provides a battery, the battery includes box, electromagnetism flowing back valve, sensor and battery monomer, electromagnetism flowing back valve the battery monomer and the sensor set up in the box, the outlet has been seted up to the bottom of box, electromagnetism flowing back valve is above-mentioned arbitrary electromagnetism flowing back valve, electromagnetism flowing back valve set up in outlet department, electromagnetism flowing back valve the sensor and battery monomer interconnect, battery monomer is the electromagnet and the sensor provides electric power.

Through the mode, the electromagnetic liquid discharge valve is directly controlled through the sensor, the structure is simpler, and the reaction is quicker during liquid discharge.

In some embodiments, the first opening is located in the drain opening or the first opening communicates with the drain opening.

The electromagnet is used for attracting the magnet piston to move, so that the first opening at one end of the valve body and the second opening at the side edge are conducted, and the structure is simple.

In some embodiments, the battery further comprises a cooling device disposed in the case, the cooling device containing a cooling liquid therein, and the sensor is disposed at the bottom of the case and corresponding to the cooling device.

The sensor is arranged corresponding to the cooling device, and can be contacted with leaked cooling liquid as soon as possible, so that the electromagnetic liquid discharge valve is started, and excessive accumulation of the cooling liquid in the box body is prevented.

In order to solve the technical problems, the application adopts a technical scheme that: an electrical device is provided, the electrical device comprising a battery as described in any one of the above, the battery being configured to provide electrical power to the electrical device.

Through the mode, the electromagnet is used for attracting the magnet piston to move, so that the first opening at one end of the valve body and the second opening at the side edge are conducted, liquid in the box body of the battery in the power utilization device can be rapidly discharged, and the structure is simple.

Drawings

For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a simplified schematic illustration of a vehicle according to some embodiments;

fig. 2 is an exploded view of a battery according to some embodiments;

fig. 3 is an exploded view of a battery according to other embodiments;

FIG. 4 is a schematic cross-sectional view of an electromagnetic drain valve according to some embodiments;

FIG. 5 is a schematic diagram of an exploded construction of an electromagnetic drain valve according to some embodiments;

fig. 6 is a schematic cross-sectional structure of a battery according to some embodiments;

fig. 7 is a schematic circuit configuration of a battery according to some embodiments.

Marking:

vehicle 1, battery 10, battery cell 20, controller 30, motor 40;

the box body 11, the cover body 111, the box shell 112, the bottom plate 112a, the electric cavity 11a, the converging part 12 and the supporting beam 114;

the electromagnetic liquid discharge valve 50, the sensor 60, the cooling device 19, the valve body 51, the electromagnet 52, the magnet piston 53, the movable connecting piece 54, the sealing piece 55, the accommodating space 511, the first opening 512, the second opening 513, the third opening 514, the fourth opening 515, the groove 516, the connecting portion 517, the boss 521 and the water discharge port 119.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings showing various embodiments according to the present application, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art without undue burden on the person of ordinary skill in the art based on the embodiments described herein, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising," "including," "having," "containing," and the like in the description of the present application and in the claims and drawings are used for open ended terms. Thus, a method or apparatus that "comprises," includes, "" has "or" has, for example, one or more steps or elements, but is not limited to having only the one or more elements. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be understood that the terms "center", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the described embodiments of the application may be combined with other embodiments.

As noted above, it should be emphasized that the term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

The terms "a" and "an" in this specification may mean one, but may also be consistent with the meaning of "at least one" or "one or more". The term "about" generally means that the value mentioned is plus or minus 10%, or more specifically plus or minus 5%. The term "or" as used in the claims means "and/or" unless explicitly indicated to the contrary, only alternatives are indicated.

The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

Reference to a battery in the presently disclosed embodiments refers to a single physical module that includes one or more battery cells to provide a predetermined voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like. The battery cells are basic units in the battery, and can be generally divided into: cylindrical battery cells, prismatic battery cells, and pouch battery cells. Hereinafter, it will be mainly spread around the prismatic battery cells. It should be understood that the embodiments described hereinafter are also applicable in certain respects to cylindrical battery cells or pouch battery cells. The battery cells may also be referred to as cells.

The battery cell comprises a positive pole piece, a negative pole piece, electrolyte and a separation film. The lithium ion battery cell mainly relies on movement of lithium ions between the positive electrode sheet and the negative electrode sheet. For example, lithium ion battery cells use an intercalated lithium compound as an electrode material. The positive electrode materials currently used as lithium ion batteries are mainly commonly: lithium cobalt oxide (LiCoO 2), lithium manganate (LiMn 2O 4), lithium nickelate (LiNiO 2), and lithium iron phosphate (LiFePO 4). The separator is disposed between the positive pole piece and the negative pole piece to form a thin film structure having three layers of materials. The membrane structure is generally manufactured into an electrode assembly having a desired shape by winding or stacking. For example, a three-layer material film structure in a cylindrical battery cell is wound into a cylindrical shape of an electrode assembly, while a prismatic battery cell is wound or stacked into an electrode assembly having a substantially rectangular parallelepiped shape.

Multiple cells may be connected in series and/or parallel via electrode terminals for use in various applications. In some high power applications, such as electric vehicles, the application of batteries includes three levels: battery cell, battery module, and battery. The battery module is formed by electrically connecting a certain number of battery cells together. The battery is the final state of the battery system incorporated in the electric vehicle. The battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells. The case is generally composed of a cover and a case, which generally includes a bottom plate and an outer side plate. The outer side plate extends from the edge of the bottom plate and is generally perpendicular to the bottom plate, and the bottom plate and the outer side plate form a containing space with an opening for containing the battery cells or the battery modules. The cover body covers the opening of the accommodating space, is arranged opposite to the bottom plate and is connected with the outer side plate. The case shell and the cover body can be detachably connected or can be in sealed connection. Most of the current batteries are fabricated by assembling various control and protection systems such as a Battery Management System (BMS), a thermal management unit, etc. on one or more battery modules. As technology advances, this hierarchy of battery modules may be omitted, i.e., the battery is formed directly from the battery cells. This improvement results in a significant reduction in the number of components while the gravimetric energy density, volumetric energy density of the battery system is improved. The battery referred to in the present application includes a battery module or a battery.

A pressure relief mechanism is typically provided on a battery cell, which refers to an element or component that can be actuated to relieve the internal pressure of the battery cell when the internal pressure or temperature of the battery cell reaches a predetermined threshold. The pressure relief mechanism is also called an explosion-proof valve, an air valve, a pressure relief valve, a safety valve or the like. The pressure release mechanism may specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature of the battery cell reaches a predetermined threshold, the pressure release mechanism performs an action or a weak structure provided in the pressure release mechanism is destroyed, thereby forming an opening or a channel through which the internal pressure can be released.

In the conventional battery, a case is included for packaging a plurality of battery cells, a cooling device for cooling the battery cells, and the like, and the cooling device is generally filled with a cooling liquid. In some cases, the cooling fluid in the cooling device may leak, thereby flowing into the tank, affecting the normal operation of other components. Therefore, it is necessary to add a drain device to the tank to drain the leaked coolant. In some cases, the drainage device is an electromagnetic drainage valve, and comprises a valve body, a valve core, an elastic part, a water inlet, a water outlet and an electromagnetic coil. The valve body comprises a first barrel-shaped body and a second barrel-shaped body which are connected with each other and form a cavity; the first barrel comprises a first barrel body and a first sealing cover for fixing one end of the first barrel body, and the second barrel comprises a second barrel body and a second sealing cover for fixing one end of the second barrel body. One end of the first barrel body, which is not fixed with the first sealing cover, is connected with one end of the second barrel body, which is not fixed with the second sealing cover, the valve core is arranged in the cavity body and comprises a switch part and an electromagnetic power part, one end of the switch part is connected with one end of the switch part, the electromagnetic power part is connected with the other end of the switch part, the water inlet and the water outlet are arranged on the first barrel body, and the electromagnetic coil is arranged in the second barrel body. Under the condition of electrifying the battery coil, the electromagnetic power part can be driven to move, so that the switch part is driven to move, and the conduction between the water inlet and the water outlet is realized. However, such a drainage device requires a high position for winding the electromagnetic coil, and two cylinders are required to realize the arrangement of the electromagnetic coil, so that the structure of the valve core is also complex. Therefore, the structure of the existing electromagnetic liquid discharge valve is quite complex.

In order to solve the problem of the complicated structure of the electromagnetic drain valve, it can be noted that the main reason is that the structure of the portion that drives the valve spool is quite complicated. Particularly, the electromagnetic coil is used for driving, a more complex barrel structure is needed for arranging the electromagnetic coil, and an electromagnetic power part is needed for arranging the valve core to be matched with the electromagnetic coil. Therefore, the electromagnetic coil and the electromagnetic power part can be improved in a matching way, so that the complexity of the electromagnetic liquid discharge valve is reduced. Therefore, the electromagnetic coil can be replaced with an electromagnet, and the valve element can be replaced with a magnet piston that can be attracted after the electromagnet is energized. Therefore, an electromagnetic coil is not needed, two cylinder structures are not needed, and only one valve body with a cavity is needed. Through the mode, the disassembly process of the main control box can be simplified, and the main control line is convenient to disassemble.

Based on the above consideration, in order to solve the problem that the middle mounting device needs to penetrate through the battery, occupies the internal space of the battery and reduces the space utilization rate, a mounting device, a battery assembly and a vehicle are designed.

For example, as shown in fig. 1, which is a simplified schematic diagram of a vehicle 1 according to some embodiments, the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle, or a new energy vehicle, which may be a pure electric vehicle, a hybrid vehicle, or an extended range vehicle, or the like. The battery 10 may be provided in the interior of the vehicle 1, and for example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, for example, the battery 10 may serve as an operating power source of the vehicle 1. And the vehicle 1 may further include a controller 30 and a motor 40. The controller 30 is used to control the power supplied by the battery 10 to the motor 40, for example, for operating power requirements during start-up, navigation and travel of the vehicle 1. In another embodiment of the present application, the battery 10 may be used not only as an operating power source for the vehicle 1 but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to supply driving power to the vehicle 1. The battery 10, which is referred to hereinafter, may also be understood as a battery including a plurality of battery cells 20.

Fig. 2 and 3 illustrate exploded views of battery 10 according to some embodiments, respectively. As shown in fig. 2 and 3, the battery 10 includes a plurality of battery cells 20 and a bus member 12 for electrically connecting the plurality of battery cells 20. In order to protect the battery cells 20 from the invasion or corrosion of external liquid or foreign matter, the battery 10 includes a case 11 for enclosing a plurality of battery cells 20 and other necessary components, as shown in fig. 2 and 3. In some embodiments, the case 11 may include a cover 111 and a case 112, and the battery 10 may further include a support beam 114 extending between the cover 111 and the case 112, and the support beam 114 may extend from a bottom plate 112a of the case 112 toward the cover 111 in a direction perpendicular to the bottom plate 112 a. The cover 111 and the case 112 are hermetically combined to collectively enclose the electric chamber 11a for accommodating the plurality of battery cells 20. In other embodiments, the cover 111 and the case 112 may be combined with each other without sealing.

As shown in fig. 4 and 5, fig. 4 is a schematic cross-sectional structure of an electromagnetic liquid discharge valve according to some embodiments; fig. 5 is an exploded schematic view of an electromagnetic drain valve according to some embodiments. In some embodiments, the electromagnetic drain valve 50 includes a valve body 51, an electromagnet 52, a magnet piston 53, and a movable connection 54. A receiving space 511 is formed in the valve body 51, and a first opening 512 communicating with the receiving space 511 is formed at a first end of the valve body 51. A second opening 513 communicating with the accommodating space 511 is formed on a side wall of the valve body 51. The electromagnet 52 is disposed in the accommodating space 511 and opposite to the first opening 512. The magnet piston 53 is disposed in the accommodating space 511 and covers the first opening 512. One end of the movable connecting piece 54 is connected with the electromagnet 52, and the other end is connected with the magnet piston 53. Wherein, when the electromagnet 52 is not energized, the magnet piston 53 is located at the first opening 512; when the electromagnet 52 is energized, the magnet piston 53 moves toward the electromagnet 52, and the first opening 512 and the second opening 513 are communicated through the accommodating space 511.

The valve body 51 is a member having a receiving space 511, and the receiving space 511 may be a cavity. The valve body 51 may have a cylindrical or rectangular parallelepiped structure, and the accommodation space 511 may be a cylindrical or rectangular parallelepiped accommodation space 511. When the accommodating space 511 is a cavity, the first opening 512 is an opening of the cavity. The shapes of the first opening 512 and the second opening 513 are not limited. The first opening 512 and the second opening 513 are spaced apart from each other, and are not directly connected, but need to be connected through the accommodating space 511. The electromagnet 52 is an object having a magnetic force when energized, and may also be referred to as an electromagnet. The magnet piston 53 is an object that can be attracted to the electromagnet 52 after the electromagnet 52 is energized, and is, for example, a ferrous product or the like. When the magnet piston 53 covers the first opening 512, the first opening 512 is separated from the second opening 513, and the first opening 512 is prevented from communicating with the second opening 513. The movable connection 54 is a connection capable of allowing the magnet piston 53 to move toward or away from the electromagnet 52, and it is only necessary to connect the magnet piston 53 and simultaneously allow the magnet piston 53 to move. For example, the movable connecting piece 54 may be a guide post, and the magnet piston 53 is provided with a guide hole, and the guide post is in plug-in fit with the guide hole, so that the magnet piston 53 can move along the guide post. When the electromagnet 52 is electrified, the magnet piston 53 moves towards the electromagnet 52 along the movable connecting piece 54; and after electromagnet 52 is de-energized, magnet piston 53 continues to cover first opening 512 under the force of gravity.

In the above manner, the electromagnet 52 is used to attract the magnet piston 53 to move, thereby conducting the first opening 512 at one end of the valve body 51 and the second opening 513 at the side, and the structure is simple.

In some embodiments, the articulation piece 54 is a resilient piece.

The elastic member is, for example, a spring sheet, a combination of the spring and other structures, etc. The combination of the spring with other structures, such as a combination of the spring with a support or guide. The support may be attached to one or both ends of the spring, which in turn is attached to the electromagnet 52 and/or the magnet piston 53. The combination of the spring and the guide member is, for example, to add a spring in the embodiment of the movable connecting member 54 as a guide post, the spring is connected with the electromagnet 52 in a single-stage manner, and the other end of the spring is connected with the magnet piston 53, so that the position of the magnet piston 53 is restored after the electromagnet 52 is powered off. When the electromagnet 52 is energized, the attracting magnet piston 53 moves toward the electromagnet 52 and compresses the elastic member, causing the elastic member to elastically deform. After the electromagnet 52 is powered off, the magnetic force disappears, the magnet piston 53 loses the force of moving towards the electromagnet 52, the elastic element is restored, and the magnet piston 53 is driven to return to the original position, so that the first opening 512 is covered.

The elastic member can drive the magnet piston 53 to restore after the electromagnet 52 is powered off, so as to continuously cover the first opening 512, and the structure is simple, and other control components are not required to be added.

In some embodiments, the second end of the valve body 51 is formed with a third opening 514, the third opening 514 communicates with an end of the accommodating space 511 away from the first opening 512, the electromagnet 52 is disposed at the third opening 514, covering the third opening 514, and the first end and the second end of the valve body 51 are disposed opposite to each other.

The provision of the third opening 514 eliminates the need for the electromagnet 52 to be fitted in the accommodating space 511, and the accommodating space 511 is provided as a cavity open at both ends, thereby enabling the electromagnet 52 and the magnet piston 53 to be fitted better.

The arrangement mode enables only the movable connecting piece 54 to be connected between the electromagnet 52 and the magnet piston 53, and no other obstruction exists, so that attractive force between the magnet and the magnet piston 53 can be enhanced.

In some embodiments, the sidewall of the valve body 51 is provided with a fourth opening 515 at one side of the second end of the valve body 51, the fourth opening 515 is in communication with the third opening 514, the electromagnet 52 is provided with a plurality of protrusions 521, and the protrusions 521 are disposed in the fourth opening 515.

The fourth opening 515 may be a recess formed at the second end of the valve body 51, communicating with the third opening 514, and located at a side of the third opening 514. The boss 521 of the electromagnet 52 is formed to extend in the radial direction or the longitudinal and width directions thereof. The electromagnet 52 has a plate-like structure, and its periphery extends laterally of the valve body 51 to form a boss 521. The extending direction of the protruding portion 521 may be perpendicular to the line connecting the third opening 514 and the first opening 512.

The fourth opening 515 is provided such that the position of the electromagnet 52 is fixed and does not slide down the third opening 514 into the accommodation space 511.

In some embodiments, the fourth opening 515 is formed in plurality, and the plurality of fourth openings 515 are disposed around the second end of the valve body 51.

The fourth openings 515 are provided in plurality, and each fourth opening 515 corresponds to one boss 521 of the electromagnet 52.

This arrangement makes the electromagnet 52 more stable and no tilting occurs.

In some embodiments, a seal 55 is provided on an inner sidewall of the first end of the valve body 51, the seal 55 is provided around the magnet piston 53, and the seal 55 is detachably in interference connection with the magnet piston 53.

The seal 55 may be a seal ring, a rubber seal 55, or the like. The seal 55 is generally flexible and has good water-resistance.

The seal member 55 is provided to prevent permeation of liquid or the like through the gap between the valve body 51 and the magnet piston 53, and has a good permeation preventing effect.

In some embodiments, a groove 516 is formed on an inner sidewall of the first end of the valve body 51, and the seal 55 is disposed in the groove 516.

The inner side wall of the valve body 51, i.e., the side wall forming the accommodating space 511, is not exposed to the outside of the valve body 51, and is thus called an inner side wall.

The provision of grooves 516 enables the seal 55 to be secured against movement of the seal 55, stabilizing the permeation prevention effect of the seal 55.

In some embodiments, the cross-sectional area of the first opening 512 along a direction perpendicular to the length of the valve body 51 is smaller than the cross-sectional area of the accommodating space 511 along a direction perpendicular to the length of the valve body 51.

The magnet piston 53 is disposed in the accommodating space 511, and the first opening 512 is located at one end of the accommodating space 511, and the magnet piston 53 needs to cover the first opening 512, so the first opening 512 needs to be in a contracted arrangement relative to the accommodating space 511 to prevent the magnet piston 53 from being separated from the first opening 512. The first opening 512 has a smaller cross-sectional area perpendicular to the length direction of the valve body 51 than the receiving space 511, i.e., the valve body 51 is provided in a contracted configuration at the first end. That is, the first opening 512 is smaller than the accommodating space 511.

The first opening 512 is smaller to prevent the magnet piston 53 from falling out of the accommodating space 511, and limit the magnet piston 53.

In some embodiments, the second openings 513 are formed in plurality, and the plurality of second openings 513 are spaced around the sidewall of the valve body 51.

The second openings 513 are disposed around the side wall of the valve body 51, that is, the distances from the plurality of second openings 513 to the first opening 512 are all equal. This is provided in order to provide the second openings 513 in a plurality of directions. If the second openings 513 are not provided at intervals, the valve body 51 is divided into two parts, with no support therebetween.

This arrangement ensures the overall strength of the valve body 51 and allows as much liquid to be discharged as possible.

In some embodiments, the first end of the valve body 51 is provided with a connection portion 517, the connection portion 517 is formed by extending the first end of the valve body 51 perpendicular to the length direction of the valve body 51, and the connection portion 517 is provided with a fixing hole.

The connecting portion 517 may have any shape or structure, and may be provided with a fixing hole. In some embodiments, the connecting portion 517 is disposed coplanar with the first end of the valve body 51.

The connection 517 can make it easier to connect the electromagnetic drain valve 50 with external components.

In some embodiments, the cross-section of the magnet piston 53 perpendicular to the length direction of the valve body 51 is the same as the cross-sectional shape of the accommodating space 511 in the length direction of the valve body 51.

The same shape may enable the magnet piston 53 to be disposed exactly in the accommodation space 511 of the valve body 51. In some embodiments, the magnet piston 53 interferes with the inner sidewall of the valve body 51, but is not an interference fit. Therefore, the magnet piston 53 can move in the accommodating space 511 and can better cover the first opening 512.

This arrangement allows the magnet piston 53 to fit into the receiving space 511 and to move exactly along the receiving space 511.

Referring to fig. 6 and 7, fig. 6 is a schematic cross-sectional structure of a battery according to some embodiments, and fig. 7 is a schematic circuit structure of a battery according to some embodiments. The battery 10 includes a case 11, an electromagnetic drain valve 50, a sensor 60, and a battery cell 20. The electromagnetic drain valve 50, the battery cell 20, and the sensor 60 are provided in the case 11. The bottom of the case 11 is provided with a drain port 119, the electromagnetic drain valve 50 is any one of the above-described drain valves of the battery 10, and the electromagnetic drain valve 50 is provided at the drain port 119. The electromagnetic drain valve 50, the sensor 60, and the battery cell 20 are connected to each other.

The bottom of the tank 11 is generally the nearest side of the tank 11 to the ground, and a drain port 119 is formed in the bottom of the tank 11 to enable the liquid in the tank 11 to flow out under the action of gravity. The drain port 119 may be a through hole formed in the bottom of the housing 11. The drain 119 may be sized to fit the solenoid drain valve 50. The sensor 60 is a liquid sensor, and when the sensor 60 is in contact with a liquid, the sensor is turned on, so that the battery cell 20 and the electromagnetic drain valve 50 are turned on, and the electromagnetic drain valve 50 is operated.

By the mode, the electromagnetic liquid discharge valve 50 is directly controlled by the sensor 60, so that the structure is simpler, and the reaction is quicker during liquid discharge.

In some embodiments, the first opening 512 is located in the drain opening 119. Alternatively, in some embodiments, the first opening 512 communicates with the drain opening 119.

The drain port 119 may be sized to fit the first opening 512 or the size of the electromagnetic drain valve 50 as a whole. The battery cell 20 provides power to the electromagnet 52 and the sensor 60.

In the above manner, the electromagnet 52 is used to attract the magnet piston 53 to move, so that the first opening 512 at one end of the valve body 51 and the second opening 513 at the side are conducted, the liquid in the case 11 of the battery 10 can be rapidly discharged, the structure is simple, and the failure is not easy to occur.

In some embodiments, the battery 10 further includes a cooling device 19, the cooling device 19 being disposed in the case 11, the cooling device 19 containing a cooling fluid therein. The sensor 60 is provided at the bottom of the case 11 and is provided corresponding to the cooling device 19.

The cooling device 19 may be disposed against or around the battery cells 20. The sensor 60 may be located at the bottom of the tank 11 closest to the cooling device 19. The sensor 60 is a liquid sensor 60, which is turned on when sensing liquid, thereby turning on the battery cell 20 and the electromagnetic drain valve 50. The cooling device 19 can cool down the battery cells 20, preventing the battery cells 20 from malfunctioning due to overheating.

The sensor 60 is provided in correspondence with the cooling device 19, and can contact the leaked cooling liquid as soon as possible, thereby activating the electromagnetic liquid discharge valve 50 to prevent excessive accumulation of the cooling liquid in the tank 11.

In order to solve the technical problems, the application adopts a technical scheme that: there is provided an electrical device comprising a battery 10 according to any one of the above, the battery 10 being arranged to provide electrical power to the electrical device.

In the above manner, the electromagnet 52 is used to attract the magnet piston 53 to move, so that the first opening 512 at one end of the valve body 51 and the second opening 513 at the side edge are conducted, and the liquid in the box 11 of the battery 10 in the electric device can be rapidly discharged, so that the structure is simple, and the failure is not easy to occur.

In some specific application scenarios, aiming at the problem of complex structure of the electromagnetic drain valve 50 in the battery 10, the electromagnetic drain valve 50 of the application comprises a valve body 51, an electromagnet 52, a magnet piston 53 and a spring. A receiving space 511 is formed in the valve body 51, and a first opening 512 communicating with the receiving space 511 is formed at a first end of the valve body 51. A second opening 513 communicating with the accommodating space 511 is formed on a side wall of the valve body 51. The electromagnet 52 is disposed in the accommodating space 511 and opposite to the first opening 512. The magnet piston 53 is disposed in the accommodating space 511 and covers the first opening 512. One end of the spring is connected with the electromagnet 52, and the other end is connected with the magnet piston 53. Wherein, when the electromagnet 52 is not energized, the magnet piston 53 is located at the first opening 512; when the electromagnet 52 is energized, the magnet piston 53 moves toward the electromagnet 52, and the first opening 512 and the second opening 513 are communicated through the accommodating space 511. A groove 516 is formed in the inner side wall of the first end of the valve body 51, a seal 55 is provided in the groove 516, the seal 55 is provided around the magnet piston 53, and the seal 55 is in releasable interference connection with the magnet piston 53.

In the above manner, the electromagnet 52 is used to attract the magnet piston 53 to move, so that the first opening 512 at one end of the valve body 51 and the second opening 513 at the side are conducted, and the structure is simple and is not easy to break down. The provision of the spring allows the magnet piston 53 to be automatically reset without the need for other control structures. The seal 55 can effectively provide a waterproof effect.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims

1. An electromagnetic drain valve, characterized in that it comprises:

the valve body is provided with a containing space, a first opening communicated with the containing space is formed at the first end of the valve body, and a second opening communicated with the containing space is formed on the side wall of the valve body;

an electromagnet arranged in the accommodating space and opposite to the first opening;

the magnet piston is arranged in the accommodating space and covers the first opening;

one end of the movable connecting piece is connected with the electromagnet, and the other end of the movable connecting piece is connected with the magnet piston;

when the electromagnet is not electrified, the magnet piston is positioned at the first opening, when the electromagnet is electrified, the magnet piston moves towards the electromagnet, and the first opening and the second opening are communicated through the accommodating space.

2. The electromagnetic drain valve of claim 1, wherein the movable connector is an elastic member.

3. The electromagnetic liquid discharge valve according to claim 1, wherein a third opening is formed at the second end of the valve body, the third opening communicates with one end of the accommodating space away from the first opening, the electromagnet is disposed at the third opening to cover the third opening, and the first end and the second end of the valve body are disposed opposite to each other.

4. The electromagnetic drain valve of claim 3, wherein a side wall of the valve body defines a fourth opening on a side of the second end of the valve body, the fourth opening in communication with the third opening, the electromagnet having a plurality of bosses disposed thereon, the bosses disposed in the fourth opening.

5. The electromagnetic drain valve of claim 4, wherein a plurality of said fourth openings are formed and a plurality of said fourth openings are disposed around the second end of said valve body.

6. The electromagnetic drain valve of claim 1, wherein a seal is disposed on an inner sidewall of the first end of the valve body, the seal is disposed around the magnet piston, and the seal is in releasable interference connection with the magnet piston.

7. The electromagnetic drain valve of claim 6, wherein the first end of the valve body has a recess formed therein, the seal being disposed in the recess.

8. The electromagnetic drain valve of claim 1, wherein a cross-sectional area of the first opening along a direction perpendicular to a length of the valve body is smaller than a cross-sectional area of the receiving space along a direction perpendicular to a length of the valve body.

9. The electromagnetic drain valve of claim 1, wherein a plurality of the second openings are formed and the plurality of second openings are spaced around the sidewall of the valve body.

10. The electromagnetic drainage valve according to claim 1, wherein the first end of the valve body is provided with a connecting portion, the connecting portion is formed by extending the first end of the valve body in a direction perpendicular to the length direction of the valve body, and the connecting portion is provided with a fixing hole.

11. The electromagnetic drain valve according to claim 1, wherein a cross section of the magnet piston in a direction perpendicular to a length direction of the valve body is identical to a cross section of the accommodating space in the length direction of the valve body.

12. The battery is characterized by comprising a box body, an electromagnetic liquid discharge valve, a sensor and a battery monomer, wherein the electromagnetic liquid discharge valve, the battery monomer and the sensor are arranged in the box body, a water outlet is formed in the bottom of the box body, the electromagnetic liquid discharge valve is arranged at the water outlet, the electromagnetic liquid discharge valve is any one of the electromagnetic liquid discharge valves in claims 1-11, the electromagnetic liquid discharge valve, the sensor and the battery monomer are connected with each other, and the battery monomer provides power for the electromagnet and the sensor.

13. The battery of claim 12, wherein the first opening is located in the drain opening or the first opening communicates with the drain opening.

14. The battery of claim 13, further comprising a cooling device disposed in the housing, the cooling device containing a cooling fluid therein, the sensor disposed at a bottom of the housing and corresponding to the cooling device.

15. An electrical device comprising a battery according to any one of claims 12 to 14 for providing electrical power to the electrical device.