A battery management system including an anti-reverse parallel switch assembly

Abstract

The present invention provides a battery management system including an anti-reverse parallel switch component, including a battery, a surge suppressor, an energy storage matrix, an anti-reverse switch component and a matrix battery management and energy dispatching system. A plurality of batteries are connected in series to form a battery string. The connection end of the battery string is connected in series with the connection end of the anti-reverse switch component to form a battery cluster. The positive and negative electrodes of the energy storage matrix are electrically connected to the connection end of the matrix battery management and energy dispatching system, respectively. The matrix battery management and energy dispatching system includes a charging end, a communication unit, an operation unit, an energy dispatching unit and a central management system. The connection end of the communication unit is electrically connected to the connection end of the central management system. The other end of the central management system is connected to the charging end. The central management system is communicatively connected to the anti-reverse switch components in a plurality of battery clusters. According to the battery management system of the present invention, the reliability of preventing thermal runaway is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of electrical technology, and in particular to a battery management system including an anti-reverse parallel switch component. Background Art

[0002] Lithium batteries are the secondary power source with the highest energy density to date. There are many advantages, but there are also hidden dangers. The biggest hidden danger is the safety management of batteries and the problem of dynamic consistency life. Most of the existing power lithium battery grouping technologies use single-channel BMS management, which is a "single-channel centralized" management mode. At present, electric vehicles and power storage stations first form parallel modules by connecting multiple cells in parallel, and then connect all parallel modules in series to achieve a certain target voltage. All sampling information of the module is transmitted to the centralized BMS unit through communication, and finally a set of switch components are used for safety management and single channel output to form a battery system required by the system application. In the process of battery management, BMS collects data from each parallel module in a centralized manner, including voltage, current, temperature, etc., and uploads them to a centralized BMS management system to the control unit, and controls the terminal protection switch in real time through BMS.

[0003] Although this traditional battery management model appears to be simple in structure and has a certain degree of intelligence, it has the following problems:

[0004] 1. Since the power of each parallel module is too large, balancing cannot be implemented, which will cause serious consistency attenuation problems of the battery during long-term use and repeated charging and discharging.

[0005] 2. The single-channel design mode will inevitably cause channel load pressure under high-power working conditions. Taking electric vehicles as an example, since the design voltage of the battery pack of electric vehicles is generally above 300 volts, higher requirements are placed on all control switch devices. The increase in the withstand voltage level means increased cost and decreased reliability. In addition, there are not only hundreds of welding points on the channel, but all the driving power of the car is realized by this channel. In this process, the operating current of the channel is generally above 200 to 300 amperes, and the peak current is even thousands, which causes the channel to overheat, and then causes the battery to overheat, causing thermal runaway.

[0006] 3. The reaction time of thermal runaway is generally within 5 seconds, and it is powerful. Once thermal runaway occurs, it cannot be controlled or suppressed. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a battery management system including an anti-reverse parallel switch component, including a battery, a surge suppressor, an energy storage matrix, an anti-reverse switch component and a matrix battery management and energy scheduling system, wherein a plurality of batteries are connected in series to form a battery string, and a connection end of the battery string is connected in series with a connection end of the anti-reverse switch component to form a battery cluster, and a positive electrode and a negative electrode of the energy storage matrix are electrically connected to a connection end of the matrix battery management and energy scheduling system, respectively. The matrix battery management and energy scheduling system includes a charging end, a communication unit, an operation unit, an energy scheduling unit and a central management system, wherein a connection end of the communication unit is electrically connected to a connection end of the central management system, and the other end of the central management system is connected to a charging end, and the central management system is communicatively connected to the anti-reverse switch components in a plurality of battery clusters, and the anti-reverse switch components are communicatively connected to the battery string, and the connection ends of the surge suppressor are respectively connected in parallel with the connection ends of the plurality of battery clusters.

[0008] According to a specific embodiment of the present invention, the anti-reverse switch assembly includes a first power terminal, a first electronic switch, a first signal acquisition management unit, a main channel switch, a first current limiting unit, a temperature sampling block, a first communication interface and a first management power input, the connection end of the first power terminal is connected in series with the connection end of the main channel switch, the connection end of the first electronic switch is connected in series with the connection end of the first current limiting unit, the connection ends of the first electronic switch and the first current limiting unit are connected in parallel with the connection end of the main channel switch, the connection ends of the first signal acquisition management unit are electrically connected to the main channel switch and the first electronic switch, respectively, the connection ends of the first signal acquisition management unit are electrically connected to the first communication interface and the connection ends of the first management power input, the number of the first electronic switches is two, and the connection ends of the two first electronic switches are connected in series.

[0009] According to a specific embodiment of the present invention, the anti-reverse switch assembly includes a second power terminal, a second current limiting unit, a second signal acquisition management unit, a double-touch double-bridge switch, a diode, a second electronic switch, a second communication interface and a second management power input. The double-touch double-bridge switch includes contact one and contact two, the connection end of contact one and the connection end of contact two are connected in parallel, the connection end of the second power terminal is connected in series with the connection end of contact one, the connection end of the diode is connected in series with the connection end of contact two and in parallel with the connection end of contact one, the connection end of the second electronic switch is connected in series with the connection end of the second current limiting unit and then in parallel with the connection end of contact one, and the connection end of the second signal acquisition management unit is electrically connected to the connection ends of the double-touch double-bridge switch, contact one, the diode, the second electronic switch, the second communication interface and the second management power input respectively.

[0010] According to a specific embodiment of the present invention, the double-touch double-bridge switch includes a first switch, a second switch and a frame:

[0011] The first switch comprises a first coil, a first linkage bridge, a first contact and a first position sensing element, wherein the first coil, the first linkage bridge, the first contact and the connection end of the first position sensing element are electrically connected;

[0012] The second switch comprises a second coil, a second linkage bridge, a second contact and a second position sensing element, and the second coil, the second linkage bridge, the second contact and the connecting ends of the second position sensing element are electrically connected;

[0013] The frame includes a first mounting seat and a second mounting seat, and the first switch and the second switch are respectively mounted inside the first mounting seat and the second mounting seat.

[0014] According to a specific embodiment of the present invention, the first position sensing element includes a first micro switch, and the first coil, the first linkage bridge and the connection end of the first micro switch are electrically connected;

[0015] The second position sensing element includes a second micro switch, and the second coil, the second linkage bridge and the connecting end of the second micro switch are electrically connected.

[0016] According to a specific embodiment of the present invention, the first position sensing element includes a first position sensor, and the first coil, the first linkage bridge and the connection end of the first position sensor are electrically connected;

[0017] The second position sensing element includes a second position sensor, and the second coil, the second linkage bridge and the connecting end of the second position sensor are electrically connected.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] Each battery cluster in the energy storage matrix has its own independent management and protection functions and transmits signals to the outside. When multiple battery clusters are connected in series in a single channel, once a single battery in a battery cluster is abnormal, the first level of protection is to cut off the power by the mechanical switch of the battery cluster itself, and at the same time inform the abnormal signal to the anti-reverse parallel device. At this time, there are three states:

[0020] ① In overcharge state, the anti-reverse switch is disconnected for the second time, but it does not affect the single-channel current limiting discharge of the battery.

[0021] ② In the over-discharge state, the anti-reverse switch is disconnected for the second time, but it does not affect the single-channel current-limited charging of the battery.

[0022] ③ Thermal runaway state: In this system, each battery cluster is like an isolation cabin, supported by internal phase change materials, flame-retardant outer shell materials, and dynamic balancing functions to ensure battery consistency. The switch components of the battery cluster ensure the safety protection of the battery. In the process of abnormal thermal control, the module first cuts off the power and isolates itself from the channel. The channel is powered off again and isolated from the system through the anti-reverse switch component. The phase change material inside the module absorbs the energy once, and the flame-retardant outer shell absorbs and isolates the energy twice to prevent chain reactions. Practice has proved that this system architecture can ensure good overall consistency of the battery, and the thermal runaway blocking capability is two orders of magnitude higher than that of traditional lithium battery systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the drawings, the same reference numerals generally represent the same or similar parts.

[0024] Figure 1 The figure is a schematic structural diagram of a battery management system including an anti-reverse switch assembly according to an embodiment of the present invention;

[0025] Figure 2 The figure is a schematic structural diagram of an anti-reverse switch assembly 1 according to an embodiment of the present invention;

[0026] Figure 3 The figure is a schematic structural diagram of an anti-reverse switch assembly 2 according to an embodiment of the present invention;

[0027] Figure 4 Shown is a schematic diagram of a double-touch double-bridge switch in the structure of an anti-reverse switch assembly 2 according to an embodiment of the present invention.

[0028] In the figure: 7, first power terminal; 8, first electronic switch; 9, first signal acquisition management unit; 10, main channel switch; 11, first current limiting unit; 12, temperature sampling block; 13, first communication interface; 14, first management power input; 30, second power terminal; 31, second current limiting unit; 32, second signal acquisition management unit; 33, contact 2; 34, double-touch double-bridge switch; 101, first switch; 111, first coil; 121, first linkage bridge; 131, first contact; 141, first position sensing element; 102, second switch off; 112, second coil; 122, second linkage bridge; 132, second contact; 142, second position sensing element; 160, frame; 151, first mounting seat; 152, second mounting seat; 35, contact one; 36, second electronic switch; 37, second communication interface; 38, second management power input; 60, surge suppressor; 61, energy storage matrix; 62, anti-reverse switch assembly; 63, charging terminal; 64, communication unit; 65, operation unit; 66, energy dispatching unit; 67, matrix battery management and energy dispatching system; 68, central management system. DETAILED DESCRIPTION

[0029] In order to make those skilled in the art understand the concept and thought of the present invention more clearly, the present invention is described in detail below in conjunction with specific embodiment.It should be understood that the embodiment provided herein is only a part of all embodiments that the present invention may have.Those skilled in the art, after reading the specification of the application, have the ability to make improvements, transformations, or replacements to part or the whole of the following embodiments, and these improvements, transformations, or replacements are also included in the scope of the present invention.

[0030] In this document, the term "embodiment" does not mean that the relevant description is only applicable to a specific embodiment, but rather means that the description may also be applicable to one or more other embodiments. It should be understood by those skilled in the art that in this document, any description made for a certain embodiment can be replaced, combined, or otherwise combined with the relevant description in one or more other embodiments, and the new embodiment generated by the replacement, combination, or other combination is easily conceivable by those skilled in the art and falls within the scope of protection of the present invention.

[0031] Example 1: Combination Figure 1According to the present embodiment, a battery management system including an anti-reverse parallel switch component includes a battery, a surge suppressor 60, an energy storage matrix 61, an anti-reverse switch component 62 and a matrix battery management and energy scheduling system 67. A plurality of batteries are connected in series to form a battery string. The connection end of the battery string is connected in series with the connection end of the anti-reverse switch component 62 to form a battery cluster. The positive and negative electrodes of the energy storage matrix 61 are electrically connected to the connection end of the matrix battery management and energy scheduling system 67, respectively. The matrix battery management and energy scheduling system 67 includes a charging end 63, a communication unit 64, an operation unit 65, an energy scheduling unit 66 and a central management system 68. The connection end of the communication unit 64 is electrically connected to the connection end of the central management system 68. The other end of the central management system 68 is connected to the charging end 63. The central management system 68 is connected to the anti-reverse switch components 62 in the plurality of battery clusters in communication. The anti-reverse switch components 62 are connected to the battery string in communication. The connection ends of the surge suppressor 60 are connected in parallel with the connection ends of the plurality of battery clusters.

[0032] Example 2: Combination Figure 2 According to a battery management system including an anti-reverse parallel switch component of the present embodiment, the anti-reverse switch component 62 includes a first power terminal 7, a first electronic switch 8, a first signal acquisition management unit 9, a main channel switch 10, a first current limiting unit 11, a temperature sampling block 12, a first communication interface 13 and a first management power input 14, the connection end of the first power terminal 7 is connected in series with the connection end of the main channel switch 10, the connection end of the first electronic switch 8 is connected in series with the connection end of the first current limiting unit 11, the connection ends of the first electronic switch 8 and the first current limiting unit 11 are connected in parallel with the connection end of the main channel switch 10, the connection ends of the first signal acquisition management unit 9 are electrically connected to the main channel switch 10 and the first electronic switch 8 respectively, the connection ends of the first signal acquisition management unit 9 are electrically connected to the connection ends of the first communication interface 13 and the first management power input 14 respectively, the number of the first electronic switches 8 is two, and the connection ends of the two first electronic switches 8 are connected in series.

[0033] Example 3: Combination Figure 3According to a battery management system including an anti-reverse parallel switch component of the present embodiment, the anti-reverse switch component 62 includes a second power terminal 30, a second current limiting unit 31, a second signal acquisition management unit 32, a double-touch double-bridge switch 34, a diode, a second electronic switch 36, a second communication interface 37 and a second management power input 38, the double-touch double-bridge switch 34 includes a contact 1 35 and a contact 2 33, the connection end of the contact 1 35 and the connection end of the contact 2 33 are connected in parallel, the connection end of the second power terminal 30 is connected in series with the connection end of the contact 1 35, the connection end of the diode is connected in series with the connection end of the contact 2 33, and is connected in parallel with the connection end of the contact 1 35, the connection end of the second electronic switch 36 is connected in series with the connection end of the second current limiting unit 31, and then connected in parallel with the connection end of the contact 1 35, and the connection end of the second signal acquisition management unit 32 is electrically connected to the connection ends of the double-touch double-bridge switch 34, the contact 1 35, the diode, the second electronic switch 36, the second communication interface 37 and the second management power input 38 respectively.

[0034] Example 4: Combination Figure 4 According to a battery management system including an anti-reverse parallel switch assembly of this embodiment, the double-touch double-bridge switch 34 includes a first switch 101, a second switch 102 and a frame 160:

[0035] The first switch 101 includes a first coil 111, a first linkage bridge 121, a first contact 131 and a first position sensing element 141, and the connection ends of the first coil 111, the first linkage bridge 121, the first contact 131 and the first position sensing element 141 are electrically connected;

[0036] The second switch 102 includes a second coil 112, a second linkage bridge 122, a second contact 132 and a second position sensing element 142, and connecting ends of the second coil 112, the second linkage bridge 122, the second contact 132 and the second position sensing element 142 are electrically connected;

[0037] The frame 160 includes a first mounting seat 151 and a second mounting seat 152 , and the first switch 101 and the second switch 102 are mounted inside the first mounting seat 151 and the second mounting seat 152 , respectively.

[0038] According to this embodiment, the on and off of the switch and the triggering of the position sensing element are simultaneously realized through the linkage bridge, which is beneficial to increase the function of the double-touch double-bridge switch 34. In addition, the two switches are installed together through the frame 160 to form a double-touch double-bridge switch 34, which is beneficial to increase the compactness of the entire circuit structure requiring two switches and facilitate the wiring and installation of the entire circuit.

[0039] In one embodiment, the coil may refer to a winding formed by mutually insulated conductive wires. According to the properties of the magnetic conductor, the coil may be divided into an air-core coil, a ferrite coil, an iron core coil, a copper core coil, etc. According to the working properties, the coil may be divided into an antenna coil, an oscillation coil, a choke coil, a trap coil, a deflection coil, etc. According to the winding structure, the coil may be divided into a single-layer coil, a multi-layer coil, a honeycomb coil, a superimposed coil, etc., wherein a superimposed coil may refer to a coil formed by winding two or more conductive wires.

[0040] In one embodiment, the contact may refer to a structure that can realize the connection and disconnection of the circuit by the contact and disconnection of two conductive parts. According to the different movement modes of the contacts, the contacts can be divided into a contact consisting of a moving contact and a stationary contact (the moving contact moves until it contacts the stationary contact), a contact consisting of two moving contacts (the two moving contacts approach each other until they contact), a contact consisting of a moving contact and two stationary contacts (the moving contact moves between the two stationary contacts), etc. According to the different contact structures, the contacts can be divided into type A contacts, type B contacts, etc. Point, C-type contact, among which, type A contact can refer to a normally open contact, that is, in a normal state, the two contacts that constitute the contact are separated, and the contacts are in contact after the switch button is pressed; type B contact can refer to a normally closed contact, that is, in a normal state, the two contacts that constitute the contact are in contact, and the contacts are disengaged when the switch button is pressed; type C contact can refer to a contact with two stationary contacts and one moving contact, the moving contact moves between the two stationary contacts, the circuit is disconnected when the moving contact contacts one of the stationary contacts, and the circuit is connected when the moving contact contacts the other stationary contact.

[0041] In one embodiment, the linkage bridge may refer to an intermediate transmission member that can drive or realize the linkage of more than two components, such as an intermediate component that can realize the linkage of the contact and the position sensing element (i.e., simultaneously touching the contact and the position sensing element). In one embodiment, the linkage bridge may refer to a slender rod-shaped component, one end of which is connected to the contact and the other end is connected to the position sensing element, and the translational movement of the rod-shaped component simultaneously causes the movement of the contact and the triggering of the position sensing element; it may also refer to a pivotable component, one side of the pivot point is connected to the contact and the other side is connected to the position sensing element, and the pivoting of the pivotable component causes the movement of the contact and the triggering of the position sensing element; it may also refer to an elastic component, whose elastically movable part is simultaneously connected to the contact and the position sensing element, and when the part moves, it simultaneously causes the movement of the contact and the triggering of the position sensing element.

[0042] In one embodiment, the position sensing element may refer to an element having a position sensing function and capable of making corresponding actions or responses according to the sensed position information. In one embodiment, the position sensing element is independent of the contacts, that is, the reaction of the contacts to the movement of the linkage bridge does not belong to the reaction of the position sensing element. In one embodiment, the position sensing element may be used to sense the position or movement of the linkage bridge and make corresponding reactions or responses according to the position change or movement state of the linkage bridge. In one embodiment, the position sensing element may refer to a micro switch, in which case, the slight movement of the linkage bridge triggers the reaction of the micro switch, causing the micro switch to be connected or disconnected; it may also refer to a proximity switch, in which case, the movement of the linkage bridge approaching or moving away from the proximity switch causes the reaction of the proximity switch, causing the proximity switch to connect or disconnect the circuit; it may also refer to a position sensor, in which case, the movement of the linkage bridge is sensed by the position sensor, and the position sensor sends different signals to a control circuit according to the different movements of the linkage bridge; it may also refer to a camera, in which case, the movement of the linkage bridge is captured by the camera, and the camera transmits the movement image of the linkage bridge to the control center, and the control center sends different instructions according to the different movements of the linkage bridge.

[0043] In one embodiment, the linkage bridge is driven after the coil is energized, which may mean that the magnetic field generated after the coil is energized acts on the linkage bridge, causing the linkage bridge to move. In one embodiment, the linkage bridge is driven after the coil is energized, which may be implemented in that the magnetic field generated after the coil is energized directly acts on the linkage bridge, causing the linkage bridge to move; or, the magnetic field generated after the coil is energized passes through the iron core, causing the iron core to be magnetized, generating a magnetic attraction force for the linkage bridge, causing the linkage bridge to move; or, the magnetic field generated after the coil is energized passes through the iron core, causing the iron core to be magnetized, generating a magnetic attraction force for a transmission member, causing the transmission member to move, and the movement of the transmission member is transmitted to the linkage bridge, thereby causing the linkage bridge to move.

[0044] In one embodiment, the linkage bridge drives the contacts to achieve contact or disengagement, which may mean that the movement of the linkage bridge causes the relevant parts of the contacts to move, and the movement of the contact parts then causes the contacts to make contact or disengagement that can cause the circuit to be connected or disconnected. In one embodiment, the linkage bridge drives the contacts to achieve contact or disengagement, which may be achieved by the linkage bridge being operatively connected to the moving contact in the contact, and the movement of the linkage bridge drives the contact to move, so that the moving contact and the static contact in the contact come into contact or disengagement; or, the movement of the linkage bridge causes a transmission part to move, and the movement of the transmission part causes the moving contact of the contact to move, so that the moving contact and the static contact come into contact or disengagement; or, the linkage bridge is operatively connected to the two moving contacts of the contact, and the movement of the linkage bridge causes the two moving contacts to move closer to or farther away from each other, thereby causing the contacts to come into contact or disengagement.

[0045] In one embodiment, the linkage bridge triggers the position sensing element, which may mean that the linkage bridge causes the position sensing element to react. In one embodiment, the linkage bridge triggers the position sensing element, which may be realized in that the linkage bridge moves to the vicinity of the position sensing element, and the position sensing element senses that the linkage bridge enters the sensing range and generates a corresponding reaction action; or, the linkage bridge moves to a component that contacts or pushes the position sensing element, and the component converts the contact or push of the linkage bridge into a corresponding signal and transmits it to the position sensing element, and the position sensing element reacts accordingly; or, the position sensing element monitors the linkage bridge in real time, and once any movement of the linkage bridge occurs, the position sensing element reacts accordingly.

[0046] In one embodiment, the coil drives the linkage bridge after being energized, so that the linkage bridge drives the contacts to make contact or disengage, and the linkage bridge triggers the position sensing element. This may mean that the linkage bridge moves after the coil is energized, and such movement of the linkage bridge causes the contact components or moving contacts to move, thereby causing the contacts to make contact or disengage, and the movement of the linkage bridge also causes the position sensing element to produce a certain reaction action.

[0047] In one embodiment, the frame 160 may refer to a structure that supports and / or protects the double-touch double-bridge switch 34 as a whole. It is an independent part specifically belonging to the double-touch double-bridge switch 34, and does not belong to a more macroscopic structure, such as the entire circuit, battery management system or battery module frame or shell. In one embodiment, the mounting base may refer to a structure that allows the installed object to be installed in a certain position and achieve corresponding support and / or protection, such as a platform, recess, bracket, shell, etc.

[0048] In one embodiment, the frame 160 includes a first mounting seat 151 and a second mounting seat 152, which may mean that the overall structure of the frame 160 has a portion for mounting two switches, rather than the mounting structures of the two switches being separated from each other and regarded as one frame 160. In one embodiment, the frame 160 includes a first mounting seat 151 and a second mounting seat 152, which may mean that the two mounting seats constitute a component of the frame 160, and the two mounting seats are connected together through other parts of the frame 160. In one embodiment, the frame 160 includes a first mounting seat 151 and a second mounting seat 152, which may be implemented by the rigidity of the frame 160. The integral structure may have two recesses for mounting two switches, which are surrounded by the main body of the frame 160 structure, and the two recesses form two mounting seats; alternatively, a plurality of rod-shaped supporting structures of the frame 160 enclose a space, which is large enough to accommodate two switches, and the two switches are mounted in the space and fixedly connected to the supporting structure of the frame 160 in multiple directions, and the space forms two mounting seats; alternatively, the frame 160 is a sealed housing with two bases at the bottom of the housing, and the two switches are mounted on the two bases respectively and surrounded by the sealed housing, and the space between the two bases and their upper parts forms two mounting seats.

[0049] In one embodiment, the switch is installed in the mounting seat, which may mean that the various components of the switch are fixed or connected to the corresponding positions preset for them by the mounting seat, so that the switch can be securely placed in the mounting seat and perform the predetermined functions. In one embodiment, the first switch 101 and the second switch 102 are respectively installed in the first mounting seat 151 and the second mounting seat 152, which may mean that the first switch 101 is installed in the first mounting seat 151, and the second switch 102 is installed in the second mounting seat 152.

[0050] The following describes another embodiment according to the present invention. Figure 3 A specific instance of the embodiment may include one or more features of one or more of all the above embodiments.

[0051] According to this embodiment, the first position sensing element 141 includes a first microswitch, and the first coil 111, the first linkage bridge 121 and the connecting end of the first microswitch are electrically connected. When the first coil 111 drives the first linkage bridge 121 to move to the end position, the first linkage bridge 121 touches the first microswitch, so that the first microswitch disconnects the circuit of the first coil 111; the second position sensing element 142 includes a second microswitch, and the second coil 112, the second linkage bridge 122 and the connecting end of the second microswitch are electrically connected. When the second coil 112 drives the second linkage bridge 122 to move to the end position, the second linkage bridge 122 touches the second microswitch, so that the second microswitch disconnects the circuit of the second coil 112.

[0052] According to the present embodiment, the double-touch double-bridge switch 34 senses the movement of the linkage bridge through a micro switch, which is advantageous for sensing the position of the linkage bridge at a relatively low cost and for improving the sensitivity of position detection. Moreover, by disconnecting the circuit of the coil when the linkage bridge moves to the end position, it is advantageous for saving electric energy supplied to the coil.

[0053] In one embodiment, the micro switch may refer to a switch having a push pin capable of sensing tiny external movements, a relatively small contact spacing and a relatively high sensitivity, also known as a sensitive switch or a snap-action switch. According to volume, the micro switches include ordinary, small and ultra-small types; according to the breaking form, the micro switches include single-gang, double-gang and multi-gang types; according to protection performance, the micro switches include waterproof, dustproof and explosion-proof types; according to breaking capacity, the micro switches include ordinary, DC, microcurrent and large current types; according to the use environment, the micro switches include ordinary, high temperature resistant and ultra-high temperature resistant ceramic types; according to the push pin form, the micro switches include button type, reed type, reed roller type, lever roller type, short arm type, long arm type and the like.

[0054] In one embodiment, the end position may refer to the end position or dead point position of the motion range. For example, the upper dead point and the lower dead point of a piston moving in a cylinder are the end positions. An object may have one end position, such as the highest point that the end of a rocker arm can swing to; it may have two end positions, such as the farthest point and the closest point that one end of a rod-like structure that moves back and forth along its length can move to; it may have three end positions, such as the three corners of a track that a cart that moves on a triangular track can move to; it may have multiple end positions, such as a knob that can rotate 360 ​​degrees around a center point, each of which movement positions may become an end position.

[0055] In one embodiment, the linkage bridge moves to the end position, which may refer to the linkage bridge moving to the terminal position or its vicinity within its movement range. In one embodiment, the coil drives the linkage bridge to move to the end position, which may refer to the magnetic field generated by the coil directly or indirectly acting on the linkage bridge, so that the linkage bridge moves to its end position. In one embodiment, the coil drives the linkage bridge to move to the end position, which may be achieved in that the magnetic field generated by the coil directly acts on the linkage bridge, so that the linkage bridge moves to the end position; or the magnetic field generated by the coil passes through the iron core, so that the iron core is magnetized, and a magnetic attraction force is generated for the linkage bridge, so that the linkage bridge moves to the end position; or the magnetic field generated by the coil passes through the iron core, so that the iron core is magnetized, and a magnetic attraction force is generated for a transmission member, so that the transmission member moves, and the movement of the transmission member is transmitted to the linkage bridge, and then the linkage bridge moves to the end position.

[0056] In one embodiment, the microswitch disconnects the circuit of the coil, which may mean that the microswitch is connected to the circuit that supplies power to the coil, and the coil circuit is disconnected when the microswitch switches its state. In one embodiment, the microswitch disconnects the circuit of the coil, which may be achieved by directly connecting the microswitch to the circuit of the coil, and changing the operating state of the microswitch from an on state to an off state, thereby causing the circuit of the coil to be disconnected; or the microswitch is connected to another circuit associated with the coil circuit, and after the operating state of the microswitch changes (from on to off or from off to on), the elements of the other circuit can control the coil circuit to be disconnected.

[0057] In one embodiment, when the coil drives the linkage bridge to move to the end position, the linkage bridge triggers the microswitch, so that the microswitch disconnects the circuit of the coil. It can mean that the linkage bridge is driven by the magnetic field generated by the coil to move toward the end position. When reaching the end position, the linkage bridge can move the sensitive element of the microswitch (such as a pin or a reed), thereby causing the state of the microswitch to switch, and then causing the circuit that powers the coil to be disconnected.

[0058] The following describes another embodiment according to the present invention. Figure 4 A specific instance of the embodiment may include one or more features of one or more of all the above embodiments.

[0059] According to this embodiment, the first position sensing element 141 includes a first position sensor, and the first coil 111, the first linkage bridge 121 and the connecting end of the first position sensor are electrically connected. When the first coil 111 drives the first linkage bridge 121 to move to the end position, the first linkage bridge 121 triggers the first position sensor, so that the first position sensor sends a disconnect signal to disconnect the circuit of the first coil 111; the second position sensing element 142 includes a second position sensor, and the second coil 112, the second linkage bridge 122 and the connecting end of the second position sensor are electrically connected. When the second coil 112 drives the second linkage bridge 122 to move to the end position, the second linkage bridge 122 triggers the second position sensor, so that the second position sensor sends a disconnect signal to disconnect the circuit of the second coil 112.

[0060] According to the present embodiment, the double-touch double-bridge switch 34 senses the movement of the linkage bridge through a position sensor, which is beneficial to improving the accuracy of judging the position of the linkage bridge. Moreover, by sending a disconnect signal to disconnect the circuit of the coil when the linkage bridge moves to the end position, it is beneficial to saving electric energy provided to the coil.

[0061] In one embodiment, the position sensor may refer to a sensor that can sense the position or position change of the object to be measured and convert it into an output signal. The position sensor can generally be divided into two categories: contact sensors and proximity sensors. Among them, the contact sensor may refer to a sensor in which the object to be measured needs to touch a part of the sensor to make the sensor react, including travel switches, two-dimensional matrix position sensors, etc.; the proximity sensor may refer to a sensor in which the sensor can react as long as the object to be measured enters a certain set range of the sensor, including electromagnetic, photoelectric, differential transformer, eddy current, capacitive, reed switch, Hall type, etc.

[0062] In one embodiment, the linkage bridge triggers the position sensor, which may mean that the position sensor senses the existence of the linkage bridge at a certain place or the change of the motion state of the linkage bridge, thereby causing the position sensor to react. In one embodiment, the linkage bridge triggers the position sensor, which may be implemented in that the linkage bridge enters the sensing range of the position sensor, causing the position sensor to sense the linkage bridge and react; or the linkage bridge moves, causing the position sensor to sense the position change of the linkage bridge and react; or the linkage bridge enters the sensing range of the position sensor and continues to move within the range, and the position sensor senses the movement of the linkage bridge and reacts.

[0063] In one embodiment, a disconnect signal may refer to a signal that can directly or indirectly disconnect a specific circuit. In one embodiment, the position sensor sends a disconnect signal, which may refer to the position sensor sending a specific signal based on the sensed position or position change, and the signal can cause the specific circuit to be disconnected. In one embodiment, the position sensor sends a disconnect signal to disconnect the circuit of the coil, which may refer to the position sensor sending a signal, which is directly or indirectly transmitted to a device that can control the on and off of the circuit of the coil, and the device disconnects the circuit of the coil according to the signal or the received instruction. In one embodiment, the position sensor sends a disconnect signal to disconnect the circuit of the coil, which may be implemented in that the position sensor sends a signal, which is transmitted to a controller, and the controller sends a circuit disconnect instruction to a switch connected to the circuit of the coil according to the signal, and the switch performs a disconnect action according to the instruction; or the position sensor sends a current signal, which is directly received by a switch connected to the circuit of the coil, and the switch performs a disconnect action after receiving the current signal.

[0064] In one embodiment, when the coil drives the linkage bridge to move to the end position, the linkage bridge triggers the position sensor, causing the position sensor to send a disconnect signal to disconnect the circuit of the coil. This may mean that the linkage bridge is driven by the magnetic field generated by the coil to move toward the end position. When reaching the end position, the position sensor senses the linkage bridge or the position change of the linkage bridge, thereby sending a specific signal. The signal is transmitted directly or indirectly to a device that can control the on and off of the coil circuit, causing the device to switch state, resulting in the circuit of the coil being disconnected.

[0065] The above describes in detail the concepts, principles and ideas of the present invention in conjunction with specific implementation methods (including embodiments and examples). Those skilled in the art should understand that the implementation methods of the present invention are not limited to the several forms given above. After reading this application document, those skilled in the art can make any possible improvements, replacements and equivalent forms to the steps, methods, devices and components in the above implementation methods, and these improvements, replacements and equivalent forms should be deemed to fall within the scope of the present invention. The scope of protection of the present invention shall be subject only to the claims.

Claims

1. A battery management system including an anti-reverse parallel switch assembly, comprising a battery, a surge suppressor (60), an energy storage matrix (61), an anti-reverse switch assembly (62) and a matrix battery management and energy dispatching system (67), characterized in that: A plurality of batteries are connected in series to form a battery string, and a connection end of the battery string is connected in series with a connection end of an anti-reverse switch assembly (62) to form a battery cluster. The positive electrode and the negative electrode of the energy storage matrix (61) are respectively electrically connected to a connection end of a matrix battery management and energy dispatching system (67). The matrix battery management and energy dispatching system (67) comprises a charging end (63), a communication unit (64), an operation unit (65), an energy dispatching unit (66) and a central management system (68). The connection end of the communication unit (64) is electrically connected to a connection end of the central management system (68). The other end of the central management system (68) is connected to the charging end (63). The central management system (68) is connected in communication with the anti-reverse switch assemblies (62) in the plurality of battery clusters. The anti-reverse switch assemblies (62) are connected in communication with the battery string. The connection ends of the surge suppressor (60) are respectively connected in parallel with the connection ends of the plurality of battery clusters. The anti-reverse switch assembly (62) comprises a second power terminal (30), a second current limiting unit (31), a second signal acquisition management unit (32), a double-touch double-bridge switch (34), a diode, a second electronic switch (36), a second communication interface (37) and a second management power input (38); the double-touch double-bridge switch (34) comprises a first contact (35) and a second contact (33); a connection end of the first contact (35) and a connection end of the second contact (33) are connected in parallel; a connection end of the second power terminal (30) and a connection end of the first contact (35) are connected in parallel; The ends are connected in series, the connection end of the diode is connected in series with the connection end of the second contact (33) and is connected in parallel with the connection end of the first contact (35), the connection end of the second electronic switch (36) is connected in series with the connection end of the second current limiting unit (31) and is then connected in parallel with the connection end of the first contact (35), and the connection end of the second signal acquisition management unit (32) is electrically connected to the connection ends of the double-touch double-bridge switch (34), the first contact (35), the diode, the second electronic switch (36), the second communication interface (37) and the second management power input (38) respectively; The double-touch double-bridge switch (34) comprises a first switch (101), a second switch (102) and a frame (160): The first switch (101) comprises a first coil (111), a first linkage bridge (121), a first contact (131) and a first position sensing element (141), wherein the connection ends of the first coil (111), the first linkage bridge (121), the first contact (131) and the first position sensing element (141) are electrically connected; The second switch (102) comprises a second coil (112), a second linkage bridge (122), a second contact (132) and a second position sensing element (142), wherein the second coil (112), the second linkage bridge (122), the second contact (132) and the connection ends of the second position sensing element (142) are electrically connected; The coil is an air-core coil, a ferrite coil, an iron-core coil, a copper-core coil, an antenna coil, an oscillating coil, a choke coil, a trap coil, a deflection coil, a single-layer coil, a multi-layer coil, a honeycomb coil or a superimposed coil; The frame (160) comprises a first mounting seat (151) and a second mounting seat (152), and the first switch (101) and the second switch (102) are respectively mounted inside the first mounting seat (151) and the second mounting seat (152).

2. A battery management system comprising an anti-reverse parallel switch assembly according to claim 1, characterized in that: The first position sensing element (141) comprises a first micro switch, and the first coil (111), the first linkage bridge (121) and a connection end of the first micro switch are electrically connected; The second position sensing element (142) comprises a second micro switch, and the second coil (112), the second linkage bridge (122) and a connection end of the second micro switch are electrically connected.

3. A battery management system comprising an anti-reverse parallel switch assembly according to claim 1, characterized in that: The first position sensing element (141) comprises a first position sensor, and the first coil (111), the first linkage bridge (121) and a connection end of the first position sensor are electrically connected; The second position sensing element (142) comprises a second position sensor, and the second coil (112), the second linkage bridge (122) and a connection end of the second position sensor are electrically connected.

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