A battery management system including an anti-reverse switch component

Abstract

The present invention provides a battery management system including an anti-reverse switch component, comprising a battery string formed by a plurality of batteries connected in series, wherein the battery string and the anti-reverse switch component are connected in series to form a battery cluster; the plurality of battery clusters are connected in parallel to form an energy storage matrix; the positive and negative electrodes of the energy storage matrix are respectively connected to a parallel battery management system; the parallel battery management system comprises an acquisition communication management unit, an operation unit, a communication management unit and a central management system; the communication management unit is respectively connected to each of the battery clusters for communication; the communication management unit is respectively connected to the central management system and the acquisition communication management unit for communication; the central management system is respectively connected to a charger and a driver. According to the battery management system of the present invention, the reliability of preventing thermal runaway is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of electrical technology, and in particular to a battery management system including an anti-reverse 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 costs 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, causing the channel to overheat, which in turn causes the battery to overheat and cause thermal runaway.

[0006] 3. The reaction time of thermal runaway is generally within 5 seconds, and the power is great. 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 containing an anti-reverse switch component, comprising: a battery string formed by multiple batteries connected in series, the battery string and the anti-reverse switch component are connected in series to form a battery cluster; the multiple battery clusters are connected in parallel to form an energy storage matrix; the positive and negative electrodes of the energy storage matrix are respectively connected to a parallel battery management system (PBMS); the parallel battery management system includes a collection and communication management unit, a calculation unit, a communication management unit and a central management system; the communication management unit is respectively communicated with each of the battery clusters; the communication management unit is respectively communicated with the central management system and the collection and communication management unit; the central management system is respectively connected to a charger and a driver.

[0008] According to a specific embodiment of the present invention, a surge suppressor is further included, and the surge suppressor is connected in parallel with the plurality of battery clusters.

[0009] According to a specific embodiment of the present invention, it also includes a nine-grid temperature adoption block, and the nine-grid temperature adoption block performs temperature measurement and control on a plurality of batteries connected in series.

[0010] According to a specific embodiment of the present invention, the anti-reverse switch assembly includes: a power terminal, a main channel switch, an electronic switch, a current limiting unit, a signal acquisition management unit, a management power input and a communication interface; the power terminal is connected in series with the main channel switch; the electronic switch is connected in series with the current limiting unit, and after the two are connected, they are connected in parallel with the main channel switch; the signal acquisition management unit collects information at the main channel switch and the electronic switch, and controls the main channel switch and the electronic switch; the signal acquisition management unit is respectively connected to the communication interface and the management power input.

[0011] According to a specific embodiment of the present invention, the anti-reverse switch assembly includes: a power terminal, a double-touch double-bridge switch, a diode, a current limiting unit, an electronic switch, a signal acquisition management unit, a management power input and a communication structure; the double-touch double-bridge switch includes a contact 1 and a contact 2, and the contact 1 and the contact 2 are connected in parallel; the power terminal is connected in series with the contact 1; the diode is connected in series with the contact 2, and the two are connected in parallel with the contact 1 after being connected; the electronic switch is connected in series with the current limiting unit, and the two are connected in parallel with the contact 1 after being connected; the signal acquisition management unit collects information at the contact 1, the diode and the electronic switch, and controls the double-touch double-bridge switch and the electronic switch; the signal acquisition management unit is respectively connected to the communication interface and the management power input.

[0012] According to a specific embodiment of the present invention, the double-touch double-bridge switch includes: a first switch, the first switch includes a first coil, a first contact, a first linkage bridge and a first position sensing element, the first coil drives the first linkage bridge after being energized, so that the first linkage bridge drives the first contact to achieve contact or disengagement, and the first linkage bridge triggers the first position sensing element; a second switch, the second switch includes a second coil, a second contact, a second linkage bridge and a second position sensing element, the second coil drives the second linkage bridge after being energized, so that the second linkage bridge drives the second contact to achieve contact or disengagement, and the second linkage bridge triggers the second position sensing element; and a frame, the frame includes a first mounting seat and a second mounting seat, and the first and second switches are respectively mounted in the first and second mounting seats.

[0013] According to a specific embodiment of the present invention, the first position sensing element includes a first microswitch, and when the first coil drives the first linkage bridge to move to the end position, the first linkage bridge touches the first microswitch, so that the first microswitch disconnects the circuit of the first coil; the second position sensing element includes a second microswitch, and when the second coil drives the second linkage bridge to move to the end position, the second linkage bridge touches the second microswitch, so that the second microswitch disconnects the circuit of the second coil.

[0014] According to a specific embodiment of the present invention, the first position sensing element includes a first position sensor, and when the first coil drives the first linkage bridge to move to the end position, the first linkage bridge triggers the first position sensor, so that the first position sensor sends a disconnection signal to disconnect the circuit of the first coil; the second position sensing element includes a second position sensor, and when the second coil drives the second linkage bridge to move to the end position, the second linkage bridge triggers the second position sensor, so that the second position sensor sends a disconnection signal to disconnect the circuit of the second coil.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 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:

[0017] 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.

[0018] 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.

[0019] 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, dynamic balancing function to ensure battery consistency, and the switch components of the battery cluster to ensure battery safety protection. 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 components absorb and isolate 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

[0020] 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.

[0021] 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;

[0022] Figure 2 The figure is a schematic structural diagram of an anti-reverse switch assembly 1 according to an embodiment of the present invention;

[0023] Figure 3 The figure is a schematic structural diagram of an anti-reverse switch assembly 2 according to an embodiment of the present invention;

[0024] 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. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] Example 1: Combination Figure 1 According to the present embodiment, a battery management system including an anti-reverse switch component includes: a battery string formed by a plurality of batteries connected in series, wherein the battery string is connected in series with an anti-reverse switch component 42 to form a battery cluster; the plurality of battery clusters are connected in parallel to form an energy storage matrix 50; the positive and negative electrodes of the energy storage matrix 50 are respectively connected to a parallel battery management system (PBMS) 49; the parallel battery management system 49 includes a collection and communication management unit 43, an operation unit 44, a communication management unit 45 and a central management system 47; the communication management unit 43 is respectively connected to each of the battery clusters for communication; the communication management unit 43 is respectively connected to the central management system 47 and the collection and communication management unit 43 for communication; the central management system 47 is respectively connected to a charger 46 and a driver 48.

[0028] Example 2: Combination Figure 2 According to a battery management system including an anti-reverse switch component of this embodiment, the anti-reverse switch component 42 includes: a power terminal 7, a main channel switch 10, an electronic switch 8, a current limiting unit 11, a signal acquisition management unit 9, a management power input 14 and a communication interface 13; the power terminal is connected in series with the main channel switch; the electronic switch 8 is connected in series with the current limiting unit 11, and the two are connected in parallel with the main channel switch 10; the signal acquisition management unit 9 collects information at the main channel switch 10 and the electronic switch 8, and controls the main channel switch 10 and the electronic switch 8; the signal acquisition management unit 9 is connected to the communication interface 13 and the management power input 14 respectively. It also includes a temperature sampling block 12. The temperature sampling block 12 is a nine-grid temperature sampling block. There are two electronic switches 8, and the two electronic switches 8 are connected in series. The signal acquisition management unit 9 collects signals of the two electronic switches 8 respectively and controls the two electronic switches 8.

[0029] Example 3: Combination Figure 3According to a battery management system including an anti-reverse switch assembly of this embodiment, the anti-reverse switch assembly 42 includes: a power terminal 2 (30), a double-touch double-bridge switch (34), a diode, a current limiting unit (31), an electronic switch (36), a signal acquisition management unit (32), a management power input (38) and a communication structure (37); the double-touch double-bridge switch includes a contact 1 (35) and a contact 2 (33), the contact 1 (35) and the contact 2 (33) are connected in parallel; the power terminal (30) is connected in series with the contact 1 (35); the diode is connected to the The contact 2 (33) is connected in series, and after the two are connected, they are connected in parallel with the contact 1 (35); the electronic switch (36) is connected in series with the current limiting unit (31), and after the two are connected, they are connected in parallel with the contact 1 (35); the signal acquisition management unit (32) collects information at the contact 1 (35), the diode and the electronic switch (36), and controls the double-touch double-bridge switch (34) and the electronic switch (36); the signal acquisition management unit (32) is respectively connected to the communication interface (37) and the management power input (38).

[0030] Example 4: Combination Figure 4 According to the anti-reverse switch assembly of the present embodiment 3, the double-touch double-bridge switch 34 comprises: a first switch 101, the first switch 101 comprises a first coil 111, a first contact 131, a first linkage bridge 121 and a first position sensing element 141, the first coil 111 drives the first linkage bridge 121 after being energized, so that the first linkage bridge 121 drives the first contact 131 to achieve contact or disengagement, and the first linkage bridge 121 triggers the first position sensing element 141; a second switch 102, the second switch 102 comprises a second A coil 112, a second contact 132, a second linkage bridge 122 and a second position sensing element 142. When the second coil 112 is energized, it drives the second linkage bridge 122, so that the second linkage bridge 122 drives the second contact 132 to achieve contact or disengagement, and the second linkage bridge 122 triggers the second position sensing element 142; and a frame 160. The frame 160 includes a first mounting seat 151 and a second mounting seat 152. The first and second switches 101 and 102 are respectively mounted in the first and second mounting seats 151 and 152.

[0031] According to this embodiment, the on-off of the switch and the triggering of the position sensing element are simultaneously realized through the linkage bridge, which is conducive to increasing the functions of the double-touch double-bridge switch 34. In addition, the two switches are installed together through the frame to form the double-touch double-bridge switch 34, which is conducive to increasing the compactness of the entire circuit structure requiring two switches and facilitating the wiring and installation of the entire circuit.

[0032] In one embodiment, the coil (111, 112) may refer to a winding formed by mutually insulated 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. Among them, the superimposed coil may refer to a coil formed by winding two or more wires.

[0033] In one embodiment, the contact (131, 132) 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, and type C contacts. Among them, type A contacts may refer to normally open contacts, that is, in a normal state, the two contacts constituting the contacts are separated, and the contacts touch after the switch button is pressed; type B contacts may refer to normally closed contacts, that is, in a normal state, the two contacts constituting the contacts are in contact, and the contacts touch after the switch button is pressed; type C contacts may refer to contacts 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 touches one of the stationary contacts, and the circuit is connected when the moving contact touches the other stationary contact.

[0034] In one embodiment, the linkage bridge (121, 122) may refer to an intermediate transmission member capable of driving or realizing the linkage of two or more components, for example, an intermediate member capable of realizing the linkage of a contact and a 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 member, 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 member simultaneously causes the movement of the contact and the triggering of the position sensing element; it may also refer to a pivotable member, 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 member causes the movement of the contact and the triggering of the position sensing element; it may also refer to an elastic member, the elastically movable part of which is simultaneously connected to the contact and the position sensing element, and when the part moves, the movement of the contact and the triggering of the position sensing element are simultaneously caused.

[0035] In one embodiment, the position sensing element (141, 142) 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 contact, that is, the reaction of the contact 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 turn on or off; 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 turn on or off 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 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 issues different instructions according to different movements of the linkage bridge.

[0036] 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 realized 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.

[0037] In one embodiment, the linkage bridge drives the contacts to make contact or disengage, 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 disengage, which can cause the circuit to be connected or disconnected. In one embodiment, the linkage bridge drives the contacts to make contact or disengage, 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 moving contact to move, so that the moving contact makes contact with or disengages from the stationary contact in the contact; 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 makes contact with or disengages from the stationary contact; 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 from each other, thereby causing the contacts to make contact or disengage.

[0038] 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 by the linkage bridge moving to the vicinity of the position sensing element, the position sensing element sensing 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, 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 performs a corresponding reaction action; 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 generates a corresponding reaction action.

[0039] 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.

[0040] 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, and is an independent part that is specifically for the double-touch double-bridge switch 34, and is not a more macroscopic structure, such as a frame or housing of the entire circuit, battery management system, or battery module. In one embodiment, the mounting seat may refer to a structure that allows the mounted object to be mounted in a certain position and achieves corresponding support and / or protection, such as a platform, a recess, a bracket, a housing, etc.

[0041] In one embodiment, the frame 160 includes the first mounting seat 151 and the 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. In one embodiment, the frame 160 includes the first mounting seat 151 and the second mounting seat 152, which may mean that the two mounting seats constitute an integral part 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 can be implemented in that the rigid integral structure of the frame 160 has two recesses for mounting two switches, and the two recesses are surrounded by the main body of the frame 160 structure, and the two recesses form two mounting seats; or, a plurality of rod-shaped supporting structures of the frame 160 enclose a space, and the space is large enough to accommodate two switches, and the two switches are installed in the space and fixedly connected to the supporting structure of the frame 160 in multiple directions, and the space forms two mounting seats; or, the frame 160 is a sealed shell, and the bottom of the shell has two bases, and the two switches are respectively installed on the two bases and surrounded by the sealed shell, and the two bases and the space above them form two mounting seats.

[0042] In one embodiment, the switch is installed in the mounting seat, which may mean that each component of the switch is fixed or connected to the corresponding position preset by the mounting seat, so that the switch can be safely placed in the mounting seat and play a predetermined function. In one embodiment, the first and second switches 101 and 102 are installed in the first and second mounting seats 151 and 152 respectively, 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.

[0043] 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.

[0044] According to this embodiment, the first position sensing element 141 includes a first microswitch. 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. 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.

[0045] The double-touch double-bridge switch 34 according to this embodiment senses the movement of the linkage bridge through a micro switch, which is conducive to sensing the position of the linkage bridge at a lower cost and 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 conducive to saving the electric energy provided to the coil.

[0046] In one embodiment, a micro switch may refer to a switch with 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, micro switches include ordinary, small and ultra-small types. According to the breaking form, micro switches include single-connection type, double-connection type and multi-connection type. According to protection performance, micro switches include waterproof type, dustproof type and explosion-proof type. According to breaking capacity, micro switches include ordinary type, DC type, micro-current type and high-current type. According to the use environment, micro switches include ordinary type, high-temperature resistant type and ultra-high-temperature resistant ceramic type. According to the form of the push pin, micro switches include button type, reed type, reed roller type, lever roller type, short arm type, long arm type and the like.

[0047] In one embodiment, the end position may refer to the end position or dead point position of the range of motion. For example, the position of the top dead center and the bottom dead center of a piston moving in a cylinder is the end position. An object may have one end position, such as the highest point that the end of a swing rod 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 the length direction can move to; it may have three end positions, such as the three corner positions on the track that a trolley moving 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, and each of its movement positions may become an end position.

[0048] 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 range of motion. 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 acting directly or indirectly 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 by the magnetic field generated by the coil directly acting 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.

[0049] In one embodiment, the micro switch disconnects the circuit of the coil, which may mean that the micro switch is connected to the circuit that supplies power to the coil, and the coil circuit is disconnected when the micro switch switches state. In one embodiment, the micro switch disconnects the circuit of the coil, which may be achieved by directly connecting the micro switch to the circuit of the coil, and the operating state of the micro switch changes from the on state to the off state, thereby causing the circuit of the coil to be disconnected; or the micro switch is connected to another circuit associated with the coil circuit, and after the operating state of the micro switch changes (from on to off or from off to on), the elements of the other circuit can control the coil circuit to be disconnected.

[0050] 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.

[0051] 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.

[0052] According to this embodiment, the first position sensing element 141 includes a first position sensor. 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 disconnection signal to disconnect the circuit of the first coil 111; the second position sensing element 142 includes a second position sensor. 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 disconnection signal to disconnect the circuit of the second coil 112.

[0053] The double-touch double-bridge switch 34 according to this embodiment senses the movement of the linkage bridge through a position sensor, which is conducive to improving the accuracy of judging the position of the linkage bridge. Moreover, when the linkage bridge moves to the end position, a disconnection signal is sent to disconnect the circuit of the coil, which is conducive to saving the electric energy provided to the coil.

[0054] 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. Position sensors can generally be divided into two categories: contact sensors and proximity sensors. Among them, contact sensors may refer to sensors in which the object to be measured needs to contact a certain part of the sensor to make the sensor react, including travel switches, two-dimensional matrix position sensors, etc.; proximity sensors may refer to sensors in which the object to be measured can make the sensor react as long as it enters a certain set range of the sensor, including electromagnetic, photoelectric, differential transformer, eddy current, capacitive, reed switch, Hall, etc.

[0055] In one embodiment, the linkage bridge triggers the position sensor, which may mean that the position sensor senses the presence of the linkage bridge at a certain location or the change in 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 by the linkage bridge entering 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, causing the position sensor to sense the movement of the linkage bridge and react.

[0056] In one embodiment, the disconnection signal may refer to a signal that can directly or indirectly disconnect a specific circuit. In one embodiment, the position sensor sends a disconnection signal, which may refer to the position sensor sending a specific signal according to 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 disconnection 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 disconnection signal to disconnect the circuit of the coil, which may be implemented by the position sensor sending a signal, which is transmitted to the controller, and the controller sends a circuit disconnection instruction to the switch connected to the circuit of the coil according to the signal, and the switch performs the disconnection action according to the instruction; or the position sensor sends a current signal, which is directly received by the switch connected to the circuit of the coil, and the switch performs the disconnection action after receiving the current signal.

[0057] 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.

[0058] 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 switch assembly, comprising: A battery string formed by connecting multiple batteries in series, wherein the battery string is connected in series with an anti-reverse switch assembly to form a battery cluster; the multiple battery clusters are connected in parallel to form an energy storage matrix; characterized in that: The positive electrode and the negative electrode of the energy storage matrix are respectively connected to a parallel battery management system (PBMS); The parallel battery management system includes a collection and communication management unit, a computing unit, a communication management unit and a central management system; The acquisition communication management unit is respectively connected to each of the battery clusters for communication; The communication management unit is connected to the central management system and the acquisition communication management unit for communication respectively; The central management system is connected to the charger and the driver respectively; Wherein, the anti-reverse switch assembly comprises: Power terminal, double-touch double-bridge switch, diode, current limiting unit, electronic switch, signal acquisition management unit, management power input and communication interface; The double-contact double-bridge switch comprises a contact 1 and a contact 2, wherein the contact 1 and the contact 2 are connected in parallel; The power terminal is connected in series with the contact 1; The diode is connected in series with the contact 2, and the two are connected in parallel with the contact 1; The electronic switch is connected in series with the current limiting unit, and the two are connected in parallel with the contact 1; The signal acquisition management unit collects information at the contact 1, the diode and the electronic switch, and controls the double-touch double-bridge switch and the electronic switch; The signal acquisition management unit is connected to the communication interface and the management power input respectively; Wherein, the double-touch double-bridge switch comprises: a first switch, the first switch comprising a first coil, a first contact, a first linkage bridge and a first position sensing element, wherein the first coil drives the first linkage bridge after being energized, so that the first linkage bridge drives the first contact to be in contact or out of contact, and the first linkage bridge triggers the first position sensing element; a second switch, the second switch comprising a second coil, a second contact, a second linkage bridge and a second position sensing element, the second coil drives the second linkage bridge after being energized, so that the second linkage bridge drives the second contact to make contact or disengage, and the second linkage bridge triggers the second position sensing element; and A frame, the frame comprising a first mounting seat and a second mounting seat, the first switch and the second switch being mounted in the first mounting seat and the second mounting seat respectively; The battery management system further includes a surge suppressor and a nine-grid temperature adoption block, wherein the surge suppressor is connected in parallel with the multiple battery clusters; and the nine-grid temperature adoption block performs temperature measurement and control on the multiple batteries connected in series.

2. The battery management system including the anti-reverse switch assembly according to claim 1, wherein: The anti-reverse switch assembly comprises: Power terminal, main channel switch, electronic switch, current limiting unit, signal acquisition management unit, management power input and communication interface; The power terminal is connected in series with the main channel switch; The electronic switch is connected in series with the current limiting unit, and after the two are connected, they are connected in parallel with the main channel switch; The signal acquisition management unit acquires information from the main channel switch and the electronic switch, and controls the main channel switch and the electronic switch; The signal acquisition management unit is connected to the communication interface and the management power input respectively.

3. The battery management system including the anti-reverse switch assembly according to claim 1, wherein: The first position sensing element includes a first micro switch. When the first coil drives the first linkage bridge to move to the end position, the first linkage bridge triggers the first micro switch, so that the first micro switch disconnects the circuit of the first coil. The second position sensing element includes a second micro switch. When the second coil drives the second linkage bridge to move to the end position, the second linkage bridge triggers the second micro switch, so that the second micro switch disconnects the circuit of the second coil.

4. The battery management system including the anti-reverse switch assembly according to claim 1, wherein: The first position sensing element includes a first position sensor. When the first coil drives the first linkage bridge to move to the end position, the first linkage bridge triggers the first position sensor, so that the first position sensor sends a disconnection signal to disconnect the circuit of the first coil. The second position sensing element includes a second position sensor. When the second coil drives the second linkage bridge to move to the end position, the second linkage bridge triggers the second position sensor, so that the second position sensor sends a disconnection signal to disconnect the circuit of the second coil.

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