Battery relay, relay control strategy, battery and power consuming device

Abstract

The application provides a battery relay, a relay control strategy, a battery and a power utilization device, wherein the battery relay comprises a first contact, a second contact, a detection element and a driving mechanism, the first contact is a normally open contact, the second contact is in series with the first contact, and the second contact is a normally closed contact. The detection element is used to detect a potential difference between the first contact and the second contact; the driving mechanism is connected to the first contact and the second contact, and is used to control the first contact and the second contact to be closed or disconnected according to the potential difference. The battery relay can discover adhesion in time, prevent adhesion from being further intensified, and effectively avoid the harm caused by adhesion.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery relay, a relay control strategy, a battery, and an electrical device. Background Technology

[0002] Batteries have advantages such as high energy density and high power density, and are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] In the development of battery technology, besides improving battery performance, safety is also a crucial issue that cannot be ignored. If battery safety cannot be guaranteed, then the battery cannot be used. Therefore, how to enhance battery safety is a pressing technical problem that needs to be solved in battery technology. Summary of the Invention

[0004] In view of the above problems, this application provides a battery relay that can enhance battery safety.

[0005] In a first aspect, this application provides a battery relay, comprising: a first contact, a second contact, a detection element, and a driving mechanism. The first contact is a normally open contact, and the second contact is connected in series with the first contact and is a normally closed contact. The detection element is used to detect the potential difference between the first contact and the second contact; the driving mechanism is connected to the first contact and the second contact, and the driving mechanism is used to control the first contact and the second contact to close or open according to the potential difference.

[0006] In the technical solution of this application embodiment, the driving mechanism is connected to the first contact and the second contact in series to control the closing or opening of the first contact and the second contact. When the first contact is opened and the detection element detects that the potential difference between the first contact and the second contact is less than a preset value, it indicates that the first contact has stuck together. The relay continues to be energized, and the driving mechanism operates to disconnect the second contact, thereby de-energizing the relay. This avoids the adhesion from being aggravated due to the first contact continuing to be energized, effectively avoids the harm caused by adhesion, improves the safety of the battery relay, and thus improves the safety of the battery.

[0007] In some embodiments, the first contact includes a first stationary contact and a first moving contact that are matched together, and the second contact includes a second moving contact and a second stationary contact that are matched together. Both the first moving contact and the second moving contact are connected to a driving mechanism. The first moving contact can engage or disengage from the first stationary contact under the action of the driving mechanism, and the second moving contact can engage or disengage from the second stationary contact under the action of the driving mechanism.

[0008] In the above scheme, the driving mechanism can act on the first moving contact to make the first moving contact engage or disengage from the first stationary contact, and the driving mechanism can act on the second moving contact to make the second moving contact engage or disengage from the second stationary contact, thereby realizing the closure or opening of the first and second contacts.

[0009] In some embodiments, the driving mechanism includes a first magnet, a second magnet, and an electromagnetic induction armature. The first magnet is connected to a first moving contact, and the second magnet is connected to a second moving contact. The electromagnetic induction armature is used to drive the first magnet to engage the first moving contact with the first stationary contact and to drive the second magnet to disengage the second moving contact from the first stationary contact.

[0010] In the above scheme, the electromagnetic induction armature can drive the first magnet and the second magnet to move through the magnetic force between them, thereby causing the first moving contact on the first magnet and the second moving contact on the second magnet to move.

[0011] In some embodiments, the electromagnetic induction armature is provided with a control circuit, which is used to control the direction of the magnetic field generated by the electromagnetic induction armature.

[0012] In the above scheme, the control circuit can make the electromagnetic induction armature generate a magnetic field and change the magnetic field generated by the electromagnetic induction armature, so that the electromagnetic induction armature can exert forces on the first magnet and the second magnet respectively.

[0013] In some embodiments, the drive mechanism further includes a first spring and a second spring. The two ends of the first spring are respectively connected to the inner wall of the relay and the first magnet to disengage the first stationary contact and the first moving contact, so that the first contact can remain in a normally open state. The two ends of the second spring are respectively connected to the inner wall of the relay and the second magnet to engage the second stationary contact and the second moving contact, so that the second contact can remain in a normally closed state.

[0014] In some embodiments, the battery relay further includes a limiting mechanism, which includes a first limiting block and a second limiting block disposed on the inner wall of the relay. The first limiting block is used to limit the displacement of the first magnet, and the second limiting block is used to limit the displacement of the second magnet.

[0015] In some embodiments, the first spring is a compression spring, the second spring is a tension spring, the first limiting block is disposed on the side of the first magnet away from the first spring, and the second limiting block is disposed on the side of the second magnet close to the second spring.

[0016] In the above scheme, the compression spring can hold the first magnet against the first limiting block, so that the first moving contact on the first magnet is away from the first stationary contact; the tension spring can pull the second magnet to the second limiting block, so that the second moving contact on the second magnet is engaged with the second stationary contact.

[0017] In some embodiments, the battery relay further includes a first slide rail and a second slide rail spaced apart on the inner wall of the relay, and a first magnet and a second magnet are slidably connected between the first slide rail and the second slide rail.

[0018] In the above scheme, the first slide rail enables the first magnet to move along the arrangement direction of the first slide rail, so that the first magnet can move in a preset direction, and the second slide rail enables the second magnet to move along the arrangement direction of the second slide rail, so that the second magnet can move in a preset direction.

[0019] In some embodiments, the first contact includes two first stationary contacts, the second contact includes two second stationary contacts, one first stationary contact and one second stationary contact are connected in series, and the detection element is used to detect the potential difference between the other first stationary contact and the other second stationary contact.

[0020] In the above scheme, the detection element ensures that it can detect the potential difference between the first contact and the second contact by detecting the potential difference between the other first stationary contact and the other second stationary contact.

[0021] In some embodiments, the battery relay also includes an alarm that is electrically connected to the detection element.

[0022] In the above scheme, the alarm can issue an alarm based on the potential difference between the first and second contacts detected by the detection element, reminding the operator that adhesion has occurred.

[0023] Secondly, this application provides a relay control strategy for implementing the control of the battery relay provided by any of the above-mentioned solutions. The relay control strategy includes:

[0024] Energize the relay;

[0025] Determine whether the potential difference between the first contact and the second contact is greater than or equal to the preset value. If it is, it means that the battery relay is not stuck. Otherwise, it means that the battery relay is stuck.

[0026] When the relay is stuck together, the relay alarms and the second contact opens;

[0027] When the second contact is disconnected, determine whether the potential difference between the first and second contacts is greater than or equal to a preset value. If so, maintain the relay; otherwise, evacuate personnel.

[0028] In the above scheme, detecting whether the potential difference between the first and second contacts is greater than or equal to a preset value after the relay is energized can detect whether the relay is stuck before use. This allows for timely detection of relay sticking. If sticking is found, the second contact disconnects, cutting off the circuit and preventing the first contact from further sticking due to energization, effectively avoiding the hazards caused by sticking. Furthermore, when the second contact disconnects, the potential difference between the first and second contacts is again checked to ensure it is greater than or equal to the preset value. This allows for timely detection of whether the relay has a failure to disconnect, facilitating the operator's decision to perform relay maintenance or evacuate personnel, thus ensuring safety.

[0029] In some embodiments, once it is confirmed that the relay is not stuck, the first contact is closed or opened as needed, ensuring that the first contact is used in a non-sticky state and guaranteeing the safe use of the relay.

[0030] Thirdly, this application provides a battery, comprising:

[0031] Multiple battery packs;

[0032] The battery relay provided by any of the above solutions is used to electrically connect multiple battery packs.

[0033] Fourthly, this application also provides an electrical device, wherein the battery provided by the above solution is used to provide electrical energy.

[0034] This application provides a battery relay, which includes a first contact, a second contact, a detection element, and a drive mechanism. The drive mechanism is connected in series with the first and second contacts to control the closing or opening of the first and second contacts. When the first contact is open and the detection element detects that the potential difference between the first and second contacts is less than a preset value, it indicates that the first contact has stuck together. The relay is continuously energized, and the drive mechanism operates to disconnect the second contact, thereby de-energizing the relay and preventing the adhesion from worsening due to the continued energization of the first contact, effectively avoiding the harm caused by adhesion.

[0035] This application also provides a relay control strategy. In this strategy, after the relay is energized, detecting whether the potential difference between the first and second contacts is greater than or equal to a preset value allows for the detection of relay sticking before use. This enables timely detection of relay sticking. If relay sticking is present, the second contact disconnects, cutting off the circuit and preventing the first contact from further sticking due to energization, effectively avoiding the hazards caused by sticking. When the second contact disconnects, the potential difference between the first and second contacts is again checked to see if it is greater than or equal to the preset value. This allows for timely detection of whether the relay has a fault that prevents it from disconnecting, facilitating the operator's decision to maintain the relay or evacuate personnel, thus ensuring safety.

[0036] This application also provides a battery that has high safety because it includes the relay provided by the above-described technical solution.

[0037] This application also provides an electrical device that has high safety because it includes the battery provided by the above-described technical solution.

[0038] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0040] Figure 1 These are schematic diagrams of the vehicle structure in some embodiments;

[0041] Figure 2 These are schematic diagrams of the battery structure in some embodiments;

[0042] Figure 3 These are schematic diagrams of the internal structure of the battery relay in some embodiments;

[0043] Figure 4 This is a flowchart of a relay control strategy for some embodiments.

[0044] The reference numerals in the detailed embodiments are as follows:

[0045] 1 First contact, 11 First stationary contact, 12 First moving contact;

[0046] 2 Second contact, 21 Second stationary contact, 22 Second moving contact;

[0047] 3. Drive mechanism, 31. First magnet, 32. Second magnet, 33. Electromagnetic induction armature, 331. First control line connector, 332. Second control line connector, 333. Third control line connector, 34. First spring, 35. Second spring;

[0048] 41 First limit block, 42 ​​Second limit block;

[0049] 51 First slide rail, 52 Second slide rail;

[0050] 6 detection elements;

[0051] 100 battery, 101 battery pack, 102 relay, 103 maintenance switch;

[0052] 200 controller,

[0053] 300 motors

[0054] 1000, vehicles. Detailed Implementation

[0055] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0056] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0057] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0058] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0059] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0060] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0062] The inventors have noticed that because of its high voltage, the battery system is prone to breakdown and arcing at the contacts in the circuit, which makes the relays used prone to sticking together, causing the circuit to remain energized and posing a serious hazard.

[0063] Currently, dual relays are commonly used to mitigate the hazards caused by adhesion, or the lifespan of the relay is extended by improving the shape or material of the contacts. Dual relays are not only more expensive but also occupy more space, increasing system cost and footprint. Although existing technologies include methods to forcibly break adhesion by rubbing the contact points together, these methods, like those involving improving the contacts, cannot prevent further adhesion and cannot avoid the hazards caused by adhesion.

[0064] To alleviate the problem of relay contact sticking in batteries, the applicant discovered that additional protection can be provided to the relay by adding a second contact. Specifically, a second contact is added in series with the original first contact of the relay. When the first contact sticks, the added second contact disconnects to cut off the circuit power, preventing the first contact from sticking further and avoiding serious damage caused by sticking. This improves the safety of the battery relay and thus enhances the safety of the battery.

[0065] Based on the above considerations, in order to solve the problem of relay sticking, the inventors conducted in-depth research and designed a battery-powered relay. By adding a second contact in the circuit of the battery-powered relay and connecting the second contact in series with the first contact, the relay can be switched on and off together. When the second contact is disconnected, the relay circuit is disconnected, and the relay cannot be powered on.

[0066] In such a battery relay, if the first contact sticks together and the relay continues to be energized, the second contact will disconnect, thus de-energizing the relay. This prevents the first contact from continuing to be energized, which could worsen the sticking and effectively avoid the damage caused by sticking, ensuring the safety of the battery relay and thus enhancing the safety of the battery.

[0067] When a battery-operated relay is in use, the high battery voltage can easily cause the first contact, which controls the relay's on / off function, to break down and spark. The first contact is also prone to sticking, causing it to remain energized even when attempting to disconnect. Disconnecting the second contact, which is connected in series with the circuit, allows the relay to open. When the first contact fails to disconnect due to sticking, the second contact opens, preventing further sticking caused by continued energization of the first contact. This effectively avoids the hazards of sticking and ensures the safety of the battery-operated relay, thus enhancing battery safety. It should be noted that the second contact can be a relay contact with the same structure as the first contact, or a relay contact with a different structure.

[0068] The relays disclosed in this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be composed of a relay disclosed in this application, a battery, etc. This helps to avoid the aggravation of adhesion caused by continued energization of the first contact, effectively preventing the hazards caused by adhesion, improving the safety of the relay, and thus significantly improving the safety of the battery and the electrical device.

[0069] This application provides an electrical device that uses a battery as its power source. The electrical device can be a vehicle, mobile phone, portable device, laptop, ship, spacecraft, electric toy, or power tool, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical device.

[0070] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.

[0071] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0072] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0073] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a battery 100 provided in some embodiments of this application. The battery 100 includes a battery pack 101 and a relay 102. The relay 102 is used to electrically connect multiple battery packs 101, enabling the opening and closing of the circuit in the battery 100, and realizing the charging and discharging of the battery 100. It is understood that the battery 100 circuit also includes a maintenance switch 103, which facilitates disconnecting the circuit during maintenance to reduce operational risks.

[0074] In battery 100, there can be multiple battery packs 101, which can be connected in series or in parallel to meet the requirements of battery 100 to supply power to the outside.

[0075] Each battery pack 101 comprises multiple battery cells, which can be connected in series, parallel, or a combination thereof. A combination of series and parallel connections is used. The battery cells can be secondary or primary batteries; they can also be lithium-sulfur, sodium-ion, or magnesium-ion batteries, but are not limited to these. The battery cells can be cylindrical, flat, cuboid, or other shapes.

[0076] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the internal structure of a battery relay 102 provided in some embodiments of this application. The relay 102 is an electrical control device that plays a role in automatic adjustment, safety protection, and circuit switching in a circuit. The relay 102 mainly includes a contact group and a coil. The coil controls the closing or opening of the contact group by controlling the current flowing through it, thereby realizing the closing or opening of the relay 102. The coil is made of wound cable. When current flows through the coil, it generates a magnetic field. The magnetic field interacts with the contact group to realize the closing or opening of the contact group.

[0077] According to some embodiments of this application, refer to Figure 3 The relay 102 of the battery includes a first contact 1, a second contact 2, a detection element 6, and a drive mechanism 3. The first contact 1 is a normally open contact, and the second contact 2 is a normally closed contact. The second contact 2 is connected in series with the first contact 1, so that both the second contact 2 and the first contact 1 can control the on / off state of the relay 102. The detection element 6 is used to detect the potential difference between the first contact 1 and the second contact 2 to determine whether the first contact 1 and the second contact 2 are connected. The drive mechanism 3 is connected to the first contact 1 and the second contact 2, and is used to control the first contact 1 and the second contact 2 to close or open based on the potential difference between them.

[0078] The first contact 1 and the second contact 2 are both contact groups set in the circuit of the relay 102. The two are connected in series to control the disconnection of the relay 102, so that the disconnection of the first contact 1 and the disconnection of the second contact 2 can both cause the relay 102 to disconnect.

[0079] In this application, the contact form of the first contact 1 and the second contact 2 can be point contact. It is understood that the contact form of the first contact 1 and the second contact 2 can also be line contact or surface contact, and those skilled in the art can set the contact form of the first contact 1 and the second contact 2 according to the actual situation. Furthermore, when the first contact 1 and the second contact 2 are closed, both the first contact 1 and the second contact 2 have contact pressure, which not only ensures good contact and minimizes the contact resistance of the relay 102, but also prevents the growth of surface films and contamination of the contact surface.

[0080] A normally open contact is a contact that is open when the coil is not energized. A normally closed contact is a contact that is closed when the coil is not energized.

[0081] The detection element 6 can be a voltmeter, used to measure the potential difference between the first contact 1 and the second contact 2, so that the continuity of the circuit between the first contact 1 and the second contact 2 can be determined based on the potential difference between the first contact 1 and the second contact 2.

[0082] The driving mechanism 3 may include the coil mentioned in the aforementioned scheme, using the magnetic field generated by the coil as the source of driving force to drive the first contact 1 and the second contact 2 to actuate. The driving mechanism 3 may also include other mechanisms with insulation function capable of generating mechanical action, such as hydraulic cylinders, linear motors, etc., to drive the first contact 1 and the second contact 2 to actuate.

[0083] Specifically, when the detection element 6 detects that the potential difference between the first contact 1 and the second contact 2 is greater than or equal to a preset value, it indicates that the circuit between the first contact 1 and the second contact 2 is open. Since the second contact 2 is a normally closed contact, it means that the first contact 1 is open and has not stuck together. When the detection element 6 detects that the potential difference between the first contact 1 and the second contact 2 is less than the preset value, it indicates that the circuit between the first contact 1 and the second contact 2 is connected. Since the second contact 2 is a normally closed contact, it means that the first contact 1 is also closed. If the first contact 1 is not closed under the control of the driving mechanism 3 at this time, it means that the first contact 1 has stuck together. The driving mechanism 3 can drive the second contact 2 to open, thereby de-energizing the relay 102 and preventing the sticking from worsening due to the continued energization of the first contact 1, effectively avoiding the harm caused by sticking. In this application, the preset value is 5V. A potential difference of 5V can effectively determine whether the circuit between the first contact 1 and the second contact 2 is open. It is understood that the preset value can also be other values, and those skilled in the art can set the specific value according to the actual situation. In some embodiments of this application, the first contact 1 includes a first stationary contact 11 and a first moving contact 12 that are matched and configured, and the second contact 2 includes a second moving contact 22 and a second stationary contact 21 that are matched and configured. The first moving contact 12 and the second moving contact 22 are both connected to the driving mechanism 3. The first moving contact 12 can be driven by the driving mechanism 3 to engage or disengage with the first stationary contact 11, thereby realizing the closing or opening of the first contact 1; the second moving contact 22 can be driven by the driving mechanism 3 to engage or disengage with the second stationary contact 21, thereby realizing the closing or opening of the second contact 2.

[0084] The first stationary contact 11 and the first moving contact 12, which are matched and configured, form the first contact 1 as a contact group and function as a switch. The second moving contact 22 and the second stationary contact 21, which are matched and configured, form the second contact 2 as a contact group and function as a switch.

[0085] Furthermore, the first contact 1 in this application may include two first stationary contacts 11 and one first moving contact 12, and the second contact 2 may include two second stationary contacts 21 and one second moving contact 22. One first stationary contact 11 and one second stationary contact 21 are connected in series. The first moving contact 12 can engage with both first stationary contacts 11 simultaneously, and the second moving contact 22 can engage with both second stationary contacts 21 simultaneously. The detection element 6 is used to detect the potential difference between another first stationary contact 11 and another second stationary contact 21 to ensure that the detection range of the detection element 6 can completely include the first contact 1 and the second contact 2.

[0086] In some embodiments, the first contact 1 may include a first stationary contact 11 and a first moving contact 12, and the second contact 2 may include a second stationary contact 21 and a second moving contact 22. The first moving contact 12 and the second moving contact 22 are connected in series. The first moving contact 12 can engage with the first stationary contact 11, and the second moving contact 22 can engage with the second stationary contact 21. The detection element 6 is used to detect the potential difference between the first stationary contact 11 and the second stationary contact 21 to ensure that the detection range of the detection element 6 can completely encompass the first contact 1 and the second contact 2. It is understood that the first contact 1 and the second contact 2 can also have other structural forms, as long as it ensures that the detection range of the detection element 6 can completely encompass the first contact 1 and the second contact 2.

[0087] In some embodiments, the drive mechanism 3 includes a first magnet 31, a second magnet 32, and an electromagnetic induction armature 33. The first magnet 31 is connected to the first moving contact 12, and the second magnet 32 ​​is connected to the second moving contact 22. The electromagnetic induction armature 33 drives the first magnet 31 to move by the electromagnetic force generated between the first magnet 31 and the second magnet 32, so that the first moving contact 12 engages with the first stationary contact 11, and drives the second magnet 32 ​​to move so that the second moving contact 22 disengages from the first stationary contact 11.

[0088] The electromagnetic induction armature 33 here functions as the coil in the above scheme to generate a magnetic field, which acts on the first magnet 31 and the second magnet 32 ​​to drive the first magnet 31 and the second magnet 32 ​​to move, so that the first moving contact 12 and the second moving contact 22 move accordingly.

[0089] In some embodiments, the electromagnetic induction armature 33 is provided with a control circuit to control the magnetic field generated by the electromagnetic induction armature 33, so that when needed, the electromagnetic force between the electromagnetic induction armature 33 and the first magnet 31 can drive the first magnet 31 to move, causing the first moving contact 12 to engage with the first stationary contact 11 to close the first contact 1. Also, when needed, the electromagnetic force between the electromagnetic induction armature 33 and the second magnet 32 ​​can drive the second magnet 32 ​​to move, causing the second moving contact 22 to disengage from the second stationary contact 21 to open the second contact 2. The control circuit can be a cable wound around the outer peripheral surface of the main body of the electromagnetic induction armature 33, and the electromagnetic induction armature 33 can generate a magnetic field when current flows through the cable.

[0090] Specifically, the control circuit includes a first control line connector 331, a second control line connector 332, and a third control line connector 333. The first control line connector 331 and the second control line connector 332 are connected by a cable wound around the outer peripheral surface of the electromagnetic induction armature 33, and the second control line connector 332 and the third control line connector 333 are connected by a cable wound around the outer peripheral surface of the electromagnetic induction armature 33. The first control line connector 331 and the second control line connector 332 are used to control the interaction between the electromagnetic induction armature 33 and the first magnet 31 to control the action of the first contact 1. The second control line connector 332 and the third control line connector 333 are used to control the interaction between the electromagnetic induction armature 33 and the second magnet 32 ​​to control the action of the second contact 2.

[0091] In some embodiments, the battery relay 102 further includes a controller, which is electrically connected to the control circuit of the drive mechanism 3 and the detection element 6. When the first contact 1 fails to close under the drive of the drive mechanism 3 and the potential difference is less than a preset value, it indicates that the first contact 1 has become stuck. The controller controls the drive mechanism 3 to disconnect the second contact 2, thereby de-energizing the relay 102 and preventing the adhesion from worsening due to the continued energization of the first contact 1, thus effectively avoiding the harm caused by adhesion.

[0092] In this embodiment, the controller can be a centralized or distributed controller. For example, the controller can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control the drive mechanism 3 and the detection element 6 to achieve their functions.

[0093] In some embodiments, the drive mechanism 3 further includes a first spring 34 and a second spring 35. The two ends of the first spring 34 are respectively connected to the inner wall of the relay 102 and the first magnet 31 to keep the first stationary contact 11 and the first moving contact 12 disengaged under normal conditions, thereby making the first contact 1 a normally open contact. The two ends of the second spring 35 are respectively connected to the inner wall of the relay 102 and the second magnet 32 ​​to keep the second stationary contact 21 and the second moving contact 22 engaged under normal conditions, thereby making the second contact 2 a normally closed contact.

[0094] The relay 102 of the battery also includes a limiting mechanism, which includes a first limiting block 41 and a second limiting block 42 disposed on the inner wall of the relay 102. The first limiting block 41 is used to limit the displacement of the first magnet 31 so that the first magnet 31 can be within the magnetic field range of the electromagnetic induction armature 33; the second limiting block 42 is used to limit the displacement of the second magnet 32 ​​so that the second magnet 32 ​​can be within the magnetic field range of the electromagnetic induction armature 33.

[0095] The first limiting block 41 and the second limiting block 42 are both components that play a limiting role. The first limiting block 41 and the second limiting block 42 are disposed on the inner wall of the relay 102. The first limiting block 41 can block the displacement of the first magnet 31 to achieve the limiting of the first magnet 31, and the second limiting block 42 can block the displacement of the second magnet 32 ​​to achieve the limiting of the second magnet 32.

[0096] It is understood that the limiting mechanism may also include a first limiting protrusion and a second limiting protrusion disposed on the inner wall of the relay 102. The first limiting protrusion blocks the displacement of the first magnet 31 to limit the first magnet 31, ensuring that the first magnet 31 can be within the magnetic field range of the electromagnetic induction armature 33; the second limiting protrusion blocks the displacement of the second magnet 32 ​​to limit the second magnet 32, ensuring that the second magnet 32 ​​can be within the magnetic field range of the electromagnetic induction armature 33.

[0097] Specifically, the first spring 34 is a compression spring, and the first limiting block 41 is disposed on the side of the first magnet 31 away from the first spring 34. Under normal conditions, the compression spring can hold the first magnet 31 against the first limiting block 41, so that the first moving contact 12 on the first magnet 31 is away from the first stationary contact 11. The second spring 35 is a tension spring, and the second limiting block 42 is disposed on the side of the second magnet 32 ​​close to the second spring 35. The tension spring can pull the second magnet 32 ​​onto the second limiting block 42, so that the second moving contact 22 on the second magnet 32 ​​remains engaged with the second stationary contact 21.

[0098] A compression spring is a helical spring that bears axial pressure. It is typically made of a circular cross-section material. There is a certain gap between the coils of a compression spring. When subjected to an external load, the spring contracts and deforms, storing deformation energy, allowing it to hold the first magnet 31 against the first limiting block 41. A tension spring is a helical spring that bears axial tension. Tension springs are generally made of a circular cross-section material. When not under load, the coils of a tension spring are usually tightly closed without gaps. When subjected to an external load, the spring stretches and deforms, storing deformation energy, allowing it to pull the second magnet 35 onto the first limiting block 41.

[0099] By using a compression spring, the first contact 1 remains normally open under normal conditions, meaning the first contact 1 is a normally open contact. By using a tension spring, the first contact 1 remains normally closed under normal conditions, meaning the second contact 2 is a normally closed contact.

[0100] In some embodiments, the battery relay 102 further includes a first slide rail 51 and a second slide rail 52 that are parallel to and spaced apart on the inner wall of the relay 102. A first magnet 31 and a second magnet 32 ​​are slidably connected between the first slide rail 51 and the second slide rail 52, allowing both the first magnet 31 and the second magnet 32 ​​to move along the arrangement direction of the first slide rail 51 and the second slide rail 52. Specifically, the first slide rail 51 and the second slide rail 52 are arranged parallel to the extension direction of the center line of the electromagnetic induction armature 33, which not only facilitates the arrangement of the first slide rail 51 and the second slide rail 52 but also allows the first magnet 31 and the second magnet 32 ​​to move along a preset direction.

[0101] The first slide rail 51 and the second slide rail 52 can be tracks formed by slotting on the inner wall of the relay 102. The first magnet 31 and the second magnet 32 ​​have sliding portions. The sliding portion of the first magnet 31 is loosely fitted into the first slide rail 51, achieving a sliding connection between the first magnet 31 and the first slide rail 51. The sliding portion of the second magnet 32 ​​is loosely fitted into the second slide rail 52, achieving a sliding connection between the second magnet 32 ​​and the second slide rail 52. Alternatively, the first slide rail 51 and the second slide rail 52 can be track-shaped protrusions provided on the inner wall of the relay 102. The first magnet 31 and the second magnet 32 ​​have sliding grooves. The first slide rail 51 is loosely fitted into the sliding groove of the first magnet 31, achieving a sliding connection between the first magnet 31 and the first slide rail 51. The second slide rail 52 is loosely fitted into the sliding groove of the second magnet 32, achieving a sliding connection between the second magnet 32 ​​and the second slide rail 52.

[0102] In some embodiments, the battery relay 102 further includes an alarm electrically connected to the detection element 6 or the controller, which can issue an alarm signal when the first contact 1 becomes stuck. The alarm signal is a signal that can attract the attention of the operator and surrounding personnel, so that the operator and surrounding personnel can quickly realize that the first contact 1 has become stuck after receiving the alarm signal, so that the operator and surrounding personnel can take appropriate measures in a timely manner.

[0103] The alarm signal can be either an audible or visual signal. The alarm signal allows operators to promptly notify them that relay 102 has stuck, enabling them to take timely maintenance or other corrective measures. In other words, the alarm can be either an audible or visual alarm.

[0104] According to some embodiments of this application, this application also provides a relay control strategy for implementing the control of the battery relay 102 provided in the above-described solution, such as... Figure 4 As shown, the relay control strategy includes:

[0105] Energize relay 102;

[0106] In other words, after the relay 102 is installed in the circuit, the circuit containing the relay 102 is energized. It can be understood that the relay 102 here is an open relay 102.

[0107] Determine whether the potential difference between the first contact 1 and the second contact 2 is greater than or equal to a preset value. If it is, it means that the battery relay 102 is not stuck. Otherwise, it means that the battery relay 102 is stuck.

[0108] In other words, the detection element 6 determines whether the potential difference between the first contact 1 and the second contact 2 is greater than or equal to a preset value. If the potential difference between the first contact 1 and the second contact 2 is greater than or equal to the preset value, it indicates that the first contact 1 and the second contact 2 are disconnected, and the relay 102 of the battery is not stuck. If the potential difference between the first contact 1 and the second contact 2 is less than the preset value, it indicates that the first contact 1 and the second contact 2 are connected, which means that the first contact 1, which should be normally open, has closed, that is, the first contact 1 has stuck.

[0109] When relay 102 is stuck together, relay 102 alarms and the second contact 2 opens;

[0110] In other words, when relay 102 sticks together, relay 102 issues an alarm, and drive mechanism 3 drives second contact 2 to disconnect, cutting off the circuit of relay 102 and preventing relay 102 from being continuously energized. This avoids the aggravation of sticking caused by the first contact 1 continuing to be energized, and effectively avoids the harm caused by sticking together.

[0111] When the second contact 2 is open, determine whether the potential difference between the first contact 1 and the second contact 2 is greater than or equal to a preset value. If so, perform maintenance on the relay 102; otherwise, evacuate personnel.

[0112] In other words, when the second contact 2 is disconnected, it is determined whether the potential difference between the first contact 1 and the second contact 2 is greater than or equal to a preset value. If the potential difference is greater than or equal to the preset value, it means that the relay 102 has been disconnected by disconnecting the second contact 2, and the operator can perform maintenance work on the relay 102 of the battery to eliminate the adhesion in the first contact 1 of the relay 102 of the battery. If the potential difference is less than the preset value, it means that even if the second contact 2 is disconnected, the relay 102 cannot be disconnected, and the relay 102 of the battery has malfunctioned. People in the surrounding area should be evacuated in time to avoid danger.

[0113] After relay 102 is energized, the potential difference between the first contact 1 and the second contact 2 is checked to see if it is greater than or equal to a preset value. This allows for the detection of whether relay 102 is stuck before use. If the relay 102 is stuck, the second contact 2 disconnects, cutting off the circuit and preventing the first contact 1 from becoming stuck due to continuous energization, thus effectively avoiding the hazards caused by sticking. Furthermore, when the second contact 2 disconnects, the potential difference between the first contact 1 and the second contact 2 is checked again to see if it is greater than or equal to the preset value. This allows for timely troubleshooting of whether relay 102 has a failure to disconnect, facilitating the operator's decision on whether to maintain relay 102 or evacuate personnel, thus ensuring the safe use of relay 102.

[0114] Once it is confirmed that the relay 102 is not stuck, the first contact 1 is closed or opened as needed, ensuring that the first contact 1 is used in a non-sticky state and ensuring the safe use of the relay 102.

[0115] In other words, when the potential difference between the first contact 1 and the second contact 2 is greater than or equal to a preset value, the first contact 1 is closed as needed. If it needs to be closed, the first contact 1 is closed. After the power-on is completed and the relay 102 has finished its use, the first contact 1 is opened, ready for the relay 102 to enter the next cycle of the relay control strategy. If it is not necessary to close the first contact 1, the first contact 1 remains open without action.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery-powered relay (102), characterized in that, include: First contact (1), the first contact (1) is a normally open contact; The second contact (2) is connected in series with the first contact (1), and the second contact (2) is a normally closed contact; The detection element (6) is used to detect the potential difference between the first contact (1) and the second contact (2); A drive mechanism (3) is connected to the first contact (1) and the second contact (2), and the drive mechanism (3) is used to control the first contact (1) and the second contact (2) to close or open according to the potential difference.

2. The battery relay (102) according to claim 1, characterized in that, The first contact (1) includes a first stationary contact (11) and a first moving contact (12) that are matched together. The second contact (2) includes a second moving contact (22) and a second stationary contact (21) that are matched together. The first moving contact (12) and the second moving contact (22) are both connected to the driving mechanism (3). The first moving contact (12) can engage or disengage with the first stationary contact (11) under the action of the driving mechanism (3). The second moving contact (22) can engage or disengage with the second stationary contact (21) under the action of the driving mechanism (3).

3. The battery relay (102) according to claim 2, characterized in that, The driving mechanism (3) includes a first magnet (31), a second magnet (32), and an electromagnetic induction armature (33). The first magnet (31) is connected to the first moving contact (12), and the second magnet (32) is connected to the second moving contact (22). The electromagnetic induction armature (33) is used to drive the first magnet (31) to engage the first moving contact (12) with the first stationary contact (11) and to drive the second magnet (32) to disengage the second moving contact (22) from the first stationary contact (11).

4. The battery relay (102) according to claim 3, characterized in that, The electromagnetic induction armature (33) is provided with a control circuit, which is used to control the magnetic field generated by the electromagnetic induction armature (33).

5. The battery relay (102) according to claim 3, characterized in that, The drive mechanism (3) further includes a first spring (34) and a second spring (35). The two ends of the first spring (34) are respectively connected to the inner wall of the relay (102) and the first magnet (31) to disengage the first stationary contact (11) and the first moving contact (12). The two ends of the second spring (35) are respectively connected to the inner wall of the relay (102) and the second magnet (32) to engage the second stationary contact (21) and the second moving contact (22).

6. The battery relay (102) according to claim 5, characterized in that, It also includes a limiting mechanism, which includes a first limiting block (41) and a second limiting block (42) disposed on the inner wall of the relay (102). The first limiting block (41) is used to limit the displacement of the first magnet (31), and the second limiting block (42) is used to limit the displacement of the second magnet (32).

7. The battery relay (102) according to claim 6, characterized in that, The first spring (34) is a compression spring, the second spring (35) is a tension spring, the first limiting block (41) is disposed on the side of the first magnet (31) away from the first spring (34), and the second limiting block (42) is disposed on the side of the second magnet (32) close to the second spring (35).

8. The battery relay (102) according to claim 2, characterized in that, The first contact (1) includes two first stationary contacts (11), the second contact (2) includes two second stationary contacts (21), one first stationary contact (11) and one second stationary contact (21) are connected in series, and the detection element (6) is used to detect the potential difference between another first stationary contact (11) and another second stationary contact (21).

9. The battery relay (102) according to claim 3, characterized in that, The battery relay (102) further includes a first slide rail (51) and a second slide rail (52) spaced apart on the inner wall of the relay (102), and the first magnet (31) and the second magnet (32) are slidably connected between the first slide rail (51) and the second slide rail (52).

10. The battery relay (102) according to claim 1, characterized in that, The relay (102) of the battery also includes an alarm that is electrically connected to the detection element (6).

11. A relay control strategy, characterized in that, For controlling the relay (102) of the battery as described in any one of claims 1-10, the relay control strategy includes: Energize relay (102); Determine whether the potential difference between the first contact (1) and the second contact (2) is greater than or equal to a preset value. If it is, it indicates that the relay (102) of the battery is not stuck. Otherwise, it indicates that the relay (102) of the battery is stuck. When the relay (102) is stuck together, the second contact (2) is disconnected; When the second contact (2) is disconnected, determine whether the potential difference between the first contact (1) and the second contact (2) is greater than or equal to the preset value. If so, maintain the relay (102); otherwise, evacuate personnel.

12. The relay control strategy according to claim 11, characterized in that, When the relay (102) is not stuck, if there is a need to close the relay (102), the first contact (1) will close; if there is no need to close the relay (102), the first contact (1) will not operate.

13. A battery (100), characterized in that, include: Multiple battery packs (101); The battery relay (102) as described in any one of claims 1-10, wherein the battery relay (102) is used to electrically connect a plurality of the battery packs.

14. An electrical appliance, characterized in that, Includes the battery (100) as described in claim 13, the battery (100) being used to provide electrical energy.

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