CN114498798A - Battery management system containing anti-reverse switch assembly - Google Patents
Battery management system containing anti-reverse switch assembly Download PDFInfo
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- CN114498798A CN114498798A CN202011270664.1A CN202011270664A CN114498798A CN 114498798 A CN114498798 A CN 114498798A CN 202011270664 A CN202011270664 A CN 202011270664A CN 114498798 A CN114498798 A CN 114498798A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a battery management system containing an anti-reverse switch assembly, which comprises a battery string formed by connecting a plurality of batteries in series, wherein the battery string and the anti-reverse switch assembly 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 electrode and the negative electrode of the energy storage matrix are respectively connected with 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 adopted communication management unit is respectively in communication connection with each battery cluster; the communication management unit is in communication connection with the central management system and the acquisition communication management unit respectively; the central management system is respectively connected with the charger and the driver. According to the battery management system of the present invention, the reliability of preventing thermal runaway is greatly improved.
Description
Technical Field
The invention relates to the technical field of electricity, in particular to a battery management system with an anti-reverse switch assembly.
Background
Lithium batteries are the highest energy density secondary power source to date. There are many advantages, but there are also potential risks, the most significant of which are the safety management and dynamic consistency life issues of the battery. The grouping technology of the existing power lithium battery mostly adopts single-channel BMS management, and is a single-channel centralized management mode. At present, a plurality of parallel modules are formed by connecting an electric core in parallel, all the parallel modules are connected in series to achieve certain target voltage, all sampling information of the modules is transmitted to a centralized BMS unit in a communication mode, and finally, a battery system which is required by system application is formed by safety management through a set of switch assembly and single channel output. In the process of battery management, the BMS collects concentrated data of each path of each parallel module, the collected content comprises voltage, current, temperature and the like, the collected data are uploaded to a centralized BMS management system and a control unit, and the BMS controls a protection switch of a terminal in real time.
Although the traditional battery management mode is seemingly simple in structure and has certain intelligence, the traditional battery management mode has the following problems:
1. because each parallel module has too large electric quantity, balance can not be implemented, and thus serious consistency attenuation problems of the battery in long-term use and repeated charge and discharge processes can be caused.
2. The single-channel design mode inevitably causes the load pressure of the channel under the condition of high-power operation. Taking an electric vehicle as an example, since the design voltage of a battery pack of the electric vehicle is generally over 300 volts, higher requirements are put on all management and control switching devices, and the improvement of the withstand voltage level represents the cost improvement and the reliability reduction. In addition, not only are there hundreds of welding points on the channel, but all the drive power of the vehicle is realized by the channel. In the process, the working current of the channel is generally more than 200-300 amperes, and the peak current causes the channel overheating even thousands of times, so that the battery overheating is caused, and the thermal runaway is caused.
3. The reaction time of thermal runaway is generally less than 5 seconds and the power is high. Once thermal runaway occurs, it cannot be controlled or suppressed.
Disclosure of Invention
In order to solve the above problems, the present invention provides a battery management system including an anti-reverse switch assembly, including: the battery string is formed by connecting a plurality of batteries in series, and the battery string and the anti-reverse switch assembly 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 electrode and the negative electrode of the energy storage matrix are respectively connected with a Parallel Battery Management System (PBMS); the parallel battery management system comprises an acquisition communication management unit, an operation unit, a communication management unit and a central management system; the adopted communication management unit is respectively in communication connection with each battery cluster; the communication management unit is in communication connection with the central management system and the acquisition communication management unit respectively; the central management system is respectively connected with the charger and the driver.
According to a specific embodiment of the present invention, the battery pack further comprises a surge suppressor connected in parallel with the plurality of battery clusters.
According to an embodiment of the invention, the battery pack further comprises a Sudoku temperature adoption block, and the Sudoku temperature adoption block is used for carrying out temperature measurement control on the plurality of batteries connected in series.
According to a specific embodiment of the present invention, wherein the anti-reverse switch assembly comprises: the power terminal, the main channel switch, the electronic switch, the current limiting unit, the signal acquisition management unit and the management power input and communication interface; the power terminal is connected with the main channel switch in series; the electronic switch is connected with the current limiting unit in series, and the electronic switch and the current limiting unit are connected in parallel with the main channel switch after being connected; the signal acquisition management unit acquires information at the main channel switch and information at the electronic switch and controls the main channel switch and the electronic switch; and the signal acquisition management unit is respectively connected with the communication interface and the management power supply input.
According to a specific embodiment of the present invention, the anti-reverse switch assembly includes: the power terminal, the double-touch double-bridge switch, the diode, the current limiting unit, the electronic switch, the signal acquisition management unit and the management power input and communication structure; the double-contact double-bridge switch comprises a contact 1 and a contact 2, wherein the contact 1 is connected with the contact 2 in parallel; the power wiring end is connected with the contact 1 in series; the diode is connected with the contact 2 in series, and the diode and the contact 2 are connected in parallel with the contact 1 after being connected; the electronic switch is connected with the current limiting unit in series, and the electronic switch and the current limiting unit are connected in parallel with the contact 1 after being connected; the signal acquisition management unit acquires information at the contact 1, the diode and the electronic switch and controls the double-contact double-bridge switch and the electronic switch; the signal acquisition management unit is respectively connected with the communication interface and the management power supply input.
According to a specific embodiment of the present invention, the double-touch double-bridge switch comprises: the first switch comprises 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 electrified, so that the first linkage bridge drives the first contact to realize contact or disconnection, and the first linkage bridge triggers the first position sensing element; the second switch comprises 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 electrified, so that the second linkage bridge drives the second contact to realize contact or disconnection, and the second linkage bridge triggers the second position sensing element; and a frame including a first mount and a second mount, the first and second switches being mounted in the first and second mounts, respectively.
According to a specific embodiment of the present invention, the first position sensing element comprises a first micro switch, when the first coil drives the first link bridge to move to the end position, the first link bridge triggers the first micro switch, so that the first micro switch opens the circuit of the first coil; the second position sensing element comprises a second microswitch, and when the second coil drives the second linkage bridge to move to the tail end position, the second linkage bridge triggers the second microswitch, so that the second microswitch disconnects the circuit of the second coil.
According to a specific embodiment of the present invention, wherein the first position sensing element comprises a first position sensor, when the first coil drives the first linkage bridge to move to an end position, the first linkage bridge triggers the first position sensor, so that the first position sensor sends an open signal to open the circuit of the first coil; the second position sensing element includes a second position sensor that is triggered by the second linkage bridge when the second coil drives the second linkage bridge to move to an end position such that the second position sensor sends an open signal to open the circuit of the second coil.
Compared with the prior art, the invention has the following advantages:
every battery of energy storage matrix self has independent management and protect function and to outer transport signal, carries out the in-process that the single channel is established ties when a plurality of battery clusters, in case certain battery cell in a certain battery cluster is unusual the condition appears, the 1 st level protection is implemented the outage by the battery cluster from the mechanical switch who takes, informs abnormal signal simultaneously, prevents the anti-parallel connection ware, has three kinds of states this moment:
the battery protection circuit has the advantages that firstly, in an overcharging state, the anti-reverse switch is turned off secondarily, but single-channel current-limiting discharge of the battery is not influenced.
And secondly, in an over-discharge state, the anti-reverse switch is switched off for the second time, but the single-channel current-limiting charging of the battery is not influenced.
③ thermal runaway state: in the system, each battery cluster is better than an isolation cabin, the isolation cabin is supported by an internal phase-change material, a shell material is flame-retardant, the consistency of the batteries is ensured by a dynamic balance function, and the safety protection of the batteries is ensured by a switch assembly of the battery cluster. In the process of abnormal thermal control, the module is automatically powered off and isolated from the channel, and the channel is powered off again and isolated from the system through the anti-reverse switch assembly. The module is internally subjected to primary energy absorption by a phase-change material, and a flame-retardant shell piece is subjected to secondary energy absorption and isolation to avoid chain reaction. Practice proves that the system architecture can ensure that the overall consistency of the battery is good, and the blocking capability of thermal runaway is improved by two orders of magnitude compared with that of the traditional lithium battery system.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference characters generally refer to the same or similar parts.
FIG. 1 is a schematic diagram of a battery management system including an anti-reverse switch assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an anti-reverse switch assembly 1 according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of an anti-reverse switch assembly 2 according to an embodiment of the invention;
fig. 4 is a schematic diagram of a double-touch double-bridge switch in the structure of the anti-reverse switch assembly 2 according to an embodiment of the invention.
Detailed Description
The present invention is described in detail below with reference to specific embodiments in order to make the concept and idea of the present invention more clearly understood by those skilled in the art. It is to be understood that the embodiments presented herein are only a few of all embodiments that the present invention may have. Those skilled in the art who review this disclosure will readily appreciate that many modifications, variations, or alterations to the described embodiments, either in whole or in part, are possible and within the scope of the invention as claimed.
In this document, the term "embodiment" does not imply that the pertinent description applies to only one particular embodiment, but rather that the description may apply to additional embodiment(s). Those of skill in the art will understand that any of the descriptions given herein for one embodiment can be combined with, substituted for, or combined with the descriptions of one or more other embodiments to produce new embodiments, which are readily apparent to those of skill in the art and are intended to be within the scope of the present invention.
Example 1: referring to fig. 1, a battery management system including an anti-reverse switch assembly according to the present embodiment includes: a battery string formed by connecting a plurality of batteries in series, wherein the battery string is connected with the anti-reverse switch component 42 in series 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 poles of the energy storage matrix 50 are connected to a Parallel Battery Management System (PBMS)49, respectively; the parallel battery management system 49 comprises an acquisition communication management unit 43, an arithmetic unit 44, a communication management unit 45 and a central management system 47; the communication management unit 43 is in communication connection with each battery cluster; the communication management unit 43 is in communication connection with the central management system 47 and the acquisition communication management unit 43 respectively; the central management system 47 is connected to a charger 46 and a driver 48, respectively.
Example 2: referring to fig. 2, the anti-reverse switch assembly 42 of the battery management system including the anti-reverse switch assembly according to the embodiment includes: the power terminal 7, the main channel switch 10, the electronic switch 8, the current limiting unit 11, the signal acquisition management unit 9, the management power input 14 and the communication interface 13; the power terminal is connected with the main channel switch in series; the electronic switch 8 is connected in series with the current limiting unit 11, and is connected in parallel with the main channel switch 10 after being connected; the signal acquisition management unit 9 acquires information at the main channel switch 10 and information at 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. A temperature sampling block 12 is also included. The temperature sampling block 12 is a squared temperature sampling block. The electronic switches 8 are two, and the two electronic switches 8 are connected in series. The signal acquisition management unit 9 acquires signals of the two electronic switches 8 respectively and controls the two electronic switches 8.
Example 3: referring to fig. 3, the anti-reverse switch assembly 42 of the battery management system including the anti-reverse switch assembly according to the embodiment includes: the power terminal 2(30), the double-contact double-bridge switch (34), the diode, the current limiting unit (31), the electronic switch (36), the signal acquisition management unit (32), the management power input (38) and the communication structure (37); the double-contact double-bridge switch comprises a contact 1(35) and a contact 2(33), wherein the contact 1(35) is connected with the contact 2(33) in parallel; a power terminal (30) is connected in series with the contacts 1 (35); the diode is connected in series with the contact 2(33), and is connected in parallel with the contact 1 (35); the electronic switch (36) is connected with the current limiting unit (31) in series, and is connected with the contact 1(35) in parallel; the signal acquisition management unit (32) acquires information at the contact 1(35), the diode and the electronic switch (36) and controls the double-contact double-bridge switch (34) and the electronic switch (36); the signal acquisition management unit (32) is respectively connected with the communication interface (37) and the management power supply input (38).
Example 4: referring to fig. 4, the anti-reverse switch assembly according to the present embodiment 3, wherein the double-touch double-bridge switch 34 includes: the first switch 101, the first switch 101 includes 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 electrified, so that the first linkage bridge 121 drives the first contact 131 to realize contact or disconnection, and the first linkage bridge 121 triggers the first position sensing element 141; the second switch 102, the second switch 102 includes a second coil 112, a second contact 132, a second linkage bridge 122 and a second position sensing element 142, the second coil 112 drives the second linkage bridge 122 after being electrified, so that the second linkage bridge 122 drives the second contact 132 to realize contact or disconnection, and the second linkage bridge 122 triggers the second position sensing element 142; and a frame 160, the frame 160 including a first mount 151 and a second mount 152, the first and second switches 101, 102 being mounted in the first and second mounts 151, 152, respectively.
According to the embodiment, the on-off of the switch and the triggering of the position sensing element are simultaneously realized through the linkage bridge, which is beneficial to increasing the function of the double-touch double-bridge switch 34. In addition, the two switches are mounted together by the frame to form the double-touch double-bridge switch 34, which is advantageous in increasing the compactness of the entire circuit structure requiring the two switches and facilitating the wiring and mounting of the entire circuit.
In one embodiment, the coils (111, 112) may refer to windings wound with mutually insulated wires. The coils may be classified into air-core coils, ferrite coils, iron-core coils, copper-core coils, and the like, according to the properties of the magnetizer. The coil may be classified into an antenna coil, an oscillation coil, a choke coil, a trap coil, a deflection coil, etc. according to the operational property. The coil may be classified into a single-layer coil, a multi-layer coil, a honeycomb coil, a stacked coil, etc. according to the winding structure. The superimposed coil may be a coil formed by winding two or more wires.
In one embodiment, the contacts (131, 132) may refer to a structure capable of performing connection and disconnection of an electric circuit by contact and disconnection of two conductive members, respectively. According to the different movement modes of the contacts, the contacts can be divided into a contact consisting of a moving contact and a fixed contact (the moving contact moves to be in contact with the fixed contact), a contact consisting of two moving contacts (the two moving contacts approach each other until contacting), a contact consisting of a moving contact and two fixed contacts (the moving contact moves between the two fixed contacts), and the like. The contacts may be classified into a-type contacts, b-type contacts, and c-type contacts according to the contact structure. The a-type contact can be a normally open contact, that is, in a normal state, two contacts forming the contact are separated, and the contact is contacted after a switch button is pressed; the b-type contact can be a normally closed contact, namely, in a normal state, two contact terminals forming the contact are contacted, and the contact is disconnected when a switch button is pressed; the c-type contact can be characterized by comprising two fixed contacts and a moving contact, wherein the moving contact moves between the two fixed contacts, and when the moving contact is contacted with one fixed contact, a circuit is disconnected, and when the moving contact is contacted with the other fixed contact, the circuit is connected.
In one embodiment, the linkage bridge (121, 122) may refer to an intermediate transmission capable of driving or effecting linkage of two or more components, such as an intermediate component capable of effecting linkage of the contacts and the position sensing element (i.e., simultaneous actuation of the contacts and the position sensing element). In one embodiment, the linkage bridge may be an elongated rod-shaped member having one end connected to the contact and the other end connected to the position sensing element, the translational movement of the rod-shaped member causing both movement of the contact and activation of the position sensing element; or a pivotable member, one side of the pivot point is connected with the contact, the other side is connected with 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 a resilient member having a resiliently movable portion that simultaneously connects the contacts and the position sensing element, which when moved, simultaneously causes movement of the contacts and activation of the position sensing element.
In one embodiment, the position sensing element (141, 142) may refer to an element having a position sensing function and capable of performing a corresponding action or response according to sensed position information. In an embodiment, the position sensing element is independent of the contacts, i.e. the reaction of the contacts to the movement of the linkage bridge is not a reaction of the position sensing element. In one embodiment, the position sensing element may be used to sense the position or motion of the bridge and react or respond accordingly based on a change in position or a state of motion of the bridge. In one embodiment, the position sensing element may be referred to as a microswitch, in which case a subtle movement of the linkage bridge triggers a reaction of the microswitch, causing the microswitch to turn on or off; it may also refer to a proximity switch, in which case the movement of the ganged bridge towards or away from the proximity switch causes a reaction of the proximity switch, causing the proximity switch to take the action of making or breaking the circuit; the linkage bridge can also be a position sensor, in this case, the movement of the linkage bridge is sensed by the position sensor, and the position sensor sends different signals to a certain control circuit according to different movements of the linkage bridge; the linkage bridge control system can also be a camera, in this case, the motion of the linkage bridge is shot by the camera, the camera transmits the motion image of the linkage bridge to the control center, and the control center sends different instructions according to different actions of the linkage bridge.
In one embodiment, the coil is powered on to drive the linkage bridge, which may mean that a magnetic field generated by the powered coil acts on the linkage bridge to move the linkage bridge. In one embodiment, the coil is powered on to drive the linkage bridge, and the realization mode can be that a magnetic field generated after the coil is powered on directly acts on the linkage bridge to enable the linkage bridge to move; or the magnetic field generated after the coil is electrified passes through the iron core, so that the iron core is magnetized, and magnetic attraction force aiming at the linkage bridge is generated, so that the linkage bridge moves; the magnetic field that produces after the coil circular telegram can also be through the iron core for the iron core is magnetized, produces the magnetic attraction to a driving medium, makes the driving medium take place the motion, and the motion conduction of driving medium to the linkage bridge makes the linkage bridge take place the motion then.
In one embodiment, the linkage bridge brings the contacts into and out of contact, which may mean that movement of the linkage bridge causes movement of the relevant part of the contacts, which in turn causes the contacts to make and break contact, which can result in the closing and opening of the circuit. In an embodiment, the linkage bridge drives the contact to contact or separate, which may be implemented by operatively connecting the linkage bridge with a moving contact in the contact, and the movement of the linkage bridge drives the moving contact to move, so that the moving contact is contacted with or separated from a fixed contact in the contact; the movement of the linkage bridge can also cause a transmission component to move, and the movement of the transmission component causes the moving contact of the contact to move, so that the moving contact is contacted with or separated from the fixed contact; the linkage bridge may be operatively connected to two movable contacts of the contact, and movement of the linkage bridge causes the two movable contacts to move toward or away from each other, thereby causing the contact to be contacted or separated.
In one embodiment, the position sensing element is triggered by the bridge, which may mean that the bridge causes the position sensing element to react. In one embodiment, the position sensing element is triggered by the link bridge, and the link bridge moves to the vicinity of the position sensing element, and the position sensing element senses that the link bridge enters a sensing range and generates a corresponding reaction action; or the linkage bridge moves to a part contacting or pushing the position sensing element, the part converts the contact or pushing of the linkage bridge into a corresponding signal and transmits the signal to the position sensing element, and the position sensing element makes a corresponding reaction action; it is also possible that the position sensing element monitors the link bridge in real time, and once any movement of the link bridge occurs, the position sensing element generates a corresponding reaction action.
In an embodiment, the coil is powered on to drive the linkage bridge, so that the linkage bridge drives the contact to be contacted or separated, and the linkage bridge triggers the position sensing element, which may mean that the linkage bridge moves after the coil is powered on, such movement of the linkage bridge causes a part or a moving contact of the contact to move, so that the contact is contacted or separated, and the movement of the linkage bridge also causes the position sensing element to generate a certain reaction action.
In one embodiment, the frame 160 may refer to a structure that supports and/or protects the dual-contact dual-bridge switch 34 as a whole, is a separate piece that is dedicated to the dual-contact dual-bridge switch 34, and is not a more macroscopic structure, such as a frame or housing of an entire circuit, battery management system, or battery module. In an embodiment, a mounting seat may refer to a structure, such as a platform, a recess, a bracket, a housing, etc., that is capable of allowing an object to be mounted in a certain position and to perform a corresponding supporting and/or protecting function.
In an embodiment, the frame 160 includes the first and second mounting seats 151 and 152, which may mean that the frame 160 has a portion for mounting two switches in an overall structure, 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 a first mounting seat 151 and a second mounting seat 152, which may mean that the two mounting seats form an integral part of the frame 160 and are connected together by 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 having two recesses for mounting two switches in a rigid integral structure of the frame 160, the two recesses being surrounded by a main body portion of the frame 160 structure, the two recesses forming the two mounting seats; alternatively, the plurality of rod-shaped support structures of the frame 160 may enclose a space sufficient to accommodate two switches, which are installed in the space and fixedly connected to the support structures of the frame 160 in multiple directions, and the space forms two mounting seats; alternatively, the frame 160 may be a sealed housing, the bottom of the housing has two bases, two switches are respectively mounted on the two bases and surrounded by the sealed housing, and the two bases and the space above the two bases form two mounting seats.
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 a corresponding position preset for the mounting seat, so that the switch can be stably installed in the mounting seat and perform a predetermined function. In an embodiment, the first and second switches 101 and 102 are respectively installed in the first and second installation seats 151 and 152, which may mean that the first switch 101 is installed in the first installation seat 151 and the second switch 102 is installed in the second installation seat 152.
The following describes another embodiment of the present invention, which is a specific example of the embodiment of fig. 3 and may include one or more features of one or more of all of the embodiments described above.
According to the present embodiment, the first position sensing element 141 includes a first micro switch, 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 micro switch, so that the first micro switch opens the circuit of the first coil 111; the second position sensing element 142 includes a second micro switch, and when the second coil 112 drives the second link bridge 122 to move to the end position, the second link bridge 122 triggers the second micro switch, so that the second micro switch disconnects the circuit of the second coil 112.
The double-touch double-bridge switch 34 according to the present embodiment senses the movement of the link bridge through the micro switch, facilitates sensing the position of the link bridge at a low cost, and facilitates improving the sensitivity of position detection. Moreover, the circuit of the coil is disconnected when the link bridge moves to the end position, which is beneficial to saving the electric energy provided for the coil.
In one embodiment, the micro switch may be a switch with a press pin capable of sensing external micro motion, a relatively small contact distance and a relatively high sensitivity, which is also called a sensitive switch or a snap switch. The microswitch is of a common type, a small type and a microminiature type according to the volume. According to the breaking form, the micro switch has a single connection type, a double connection type and a multiple connection type. According to the protection performance, the micro switch has a waterproof type, a dustproof type and an explosion-proof type. The micro switch has common type, direct current type, micro current type and large current type according to the breaking capacity. The micro switch has common type, high temperature resistant type and super high temperature resistant ceramic type according to the use environment. The micro switch is divided into a push-button type, a reed roller type, a lever roller type, a short movable arm type, a long movable arm type and the like according to the form of a press pin.
In one embodiment, the end position may refer to an end position or a dead point position of the range of motion. For example, the position of the upper dead point and the lower dead point of a piston moving in a cylinder is the end position. The object may have an end position, such as the highest point to which the end of the pendulum can swing; there may be two end positions, such as a rod-like structure that moves back and forth lengthwise, to the farthest and closest points to which one end can move; there may be three end positions, for example three corner positions on a track to which a trolley moving on a triangular track can move; there may be a plurality of end positions, for example a knob that can be rotated 360 degrees around a central point, each of which movement positions is possible as an end position.
In one embodiment, the movement of the bridge linkage to the end position may refer to the movement of the bridge linkage to or near the end position within its range of motion. In one embodiment, the coil drives the link bridge to move to the end position, which may mean that the magnetic field generated by the coil directly or indirectly acts on the link bridge to move the link bridge to the end position. In one embodiment, the coil drives the linkage bridge to move to the end position, which may be realized by directly acting the magnetic field generated by the coil on the linkage bridge to move the linkage bridge to the end position; or the magnetic field generated by the coil passes through the iron core, so that the iron core is magnetized, magnetic attraction force aiming at the linkage bridge is generated, and the linkage bridge moves to the tail end position; the magnetic field generated by the coil passes through the iron core, so that the iron core is magnetized, magnetic attraction to a transmission piece is generated, the transmission piece moves, the movement of the transmission piece is transmitted to the linkage bridge, and then the linkage bridge moves to the tail end position.
In an embodiment, the micro switch disconnects the circuit of the coil, which may mean that the micro switch is connected to a circuit for supplying power to the coil, and the micro switch causes the circuit of the coil to be disconnected when the state of the micro switch is switched. In an embodiment, the microswitch opens the circuit of the coil, which may be achieved in that the microswitch is directly connected into the circuit of the coil, the operating state of the microswitch is changed from an on state to an off state, thereby causing the circuit of the coil to be opened; it is also possible that the microswitch is connected to a further circuit associated with the coil circuit, the element of which further circuit is able to control the coil circuit to be switched off after a transition of the operating state of the microswitch (from on to off or from off to on).
In an embodiment, when the coil drives the linkage bridge to move to the end position, the linkage bridge triggers the micro switch to disconnect the circuit of the coil, which may mean that the linkage bridge is driven by a magnetic field generated by the coil to move toward the end position, and when the linkage bridge reaches the end position, the linkage bridge can move a sensitive element (such as a press pin or a reed) of the micro switch, so as to switch the state of the micro switch, and then disconnect the circuit for supplying power to the coil.
The following describes a specific example of the embodiment of fig. 4, which may include one or more features of one or more of all of the embodiments described above, in accordance with another embodiment of the present invention.
According to the present embodiment, the first position sensing element 141 includes a first position sensor, and 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 an open signal to open the circuit of the first coil 111; the second position sensing element 142 includes a second position sensor that is triggered by the second linkage bridge 122 when the second coil 112 drives the second linkage bridge 122 to the end position such that the second position sensor sends an open signal to open the circuit of the second coil 112.
The double-touch double-bridge switch 34 according to the present embodiment senses the movement of the link bridge through the position sensor, which is advantageous to improve the accuracy of determining the position of the link bridge. Further, it is advantageous to save electric power supplied to the coil by transmitting a disconnection signal to disconnect the circuit of the coil when the link bridge moves to the end position.
In one embodiment, the position sensor may refer to a sensor capable of sensing a position or a position change of an object to be measured and converting it into an output signal. Position sensors can be broadly classified into two broad categories, touch sensors and proximity sensors. The contact sensor can be a sensor which can enable a measured object to react only by contacting a certain part of the sensor, and comprises a travel switch, a two-dimensional matrix position sensor and the like; the proximity sensor may be a sensor that can react with a measured object only when the measured object enters a certain setting range of the sensor, and includes an electromagnetic type, a photoelectric type, a differential transformer type, an eddy current type, a capacitor type, a reed switch, a hall type, and the like.
In one embodiment, the linkage bridge triggers the position sensor, which may mean that the position sensor senses the existence of the linkage bridge somewhere or the movement state change of the linkage bridge, thereby causing the position sensor to react. In one embodiment, the position sensor is triggered by the ganged bridge, which may be implemented by the ganged bridge entering the sensing range of the position sensor, causing the position sensor to sense the ganged bridge, thereby reacting; or, the linkage bridge moves, so that the position sensor senses the position change of the linkage bridge, and then the reaction is made; it is also possible that the link bridge enters the sensing range of the position sensor and continues to move within this range, and the position sensor senses the movement of the link bridge, thereby reacting.
In an embodiment, the open signal may refer to a signal capable of directly or indirectly opening a specific circuit. In one embodiment, the position sensor sends an open signal, which may mean that the position sensor sends a specific signal according to the sensed position or position change, which can cause the specific circuit to open. In one embodiment, the position sensor sends an opening signal to open the circuit of the coil, which may mean that the position sensor sends a signal, which is directly or indirectly transmitted to a device capable of controlling the opening and closing of the circuit of the coil, and the device opens the circuit of the coil according to the signal or a received instruction. In one embodiment, the position sensor sends an opening signal to open the circuit of the coil, which may be realized by the position sensor sending a signal, which is transmitted to the controller, the controller sending a circuit opening command to a switch connected in the circuit of the coil according to the signal, the switch performing an opening action according to the command; the position sensor may transmit a current signal, the current signal may be directly received by a switch connected to the coil circuit, and the switch may generate an opening operation upon receiving the current signal.
In an embodiment, when the coil drives the linkage bridge to move to the end position, the linkage bridge triggers the position sensor, so that the position sensor sends a disconnection signal to disconnect the circuit of the coil, which may mean that the linkage bridge is driven by a magnetic field generated by the coil to move towards the end position, and when the end position is reached, the position sensor senses a position change of the linkage bridge or the linkage bridge, so as to send a specific signal, and the signal is directly or indirectly transmitted to a device capable of controlling the on-off of the coil circuit, so that the device is switched in state, and the circuit of the coil is disconnected.
The concepts, principles and concepts of the invention have been described above in detail in connection with specific embodiments (including examples and illustrations). It will be appreciated by persons skilled in the art that embodiments of the present invention are not limited to the specific forms set forth herein, and that many modifications, alterations, and equivalents of the steps, methods, apparatus, and components described in the above embodiments may be made by those skilled in the art after reading this specification, and that such modifications, alterations, and equivalents are to be considered as falling within the scope of the present invention. The scope of the invention is only limited by the claims.
Claims (8)
1. A battery management system including an anti-reverse switch assembly, comprising:
the battery string is formed by connecting a plurality of batteries in series, and the battery string and the anti-reverse switch assembly 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 method is characterized in that:
the positive electrode and the negative electrode of the energy storage matrix are respectively connected with a Parallel Battery Management System (PBMS);
the parallel battery management system comprises an acquisition communication management unit, an operation unit, a communication management unit and a central management system;
the adopted communication management unit is respectively in communication connection with each battery cluster;
the communication management unit is in communication connection with the central management system and the acquisition communication management unit respectively;
the central management system is respectively connected with the charger and the driver.
2. The battery management system of claim 1 further comprising a surge suppressor in parallel with the plurality of battery clusters.
3. The battery management system with the anti-reverse switch assembly according to claim 1, further comprising a Sudoku temperature adoption block, wherein the Sudoku temperature adoption block performs temperature measurement control on the plurality of batteries connected in series.
4. A battery management system including an anti-reverse switch assembly according to any of claims 1-3, wherein the anti-reverse switch assembly comprises:
the power terminal, the main channel switch, the electronic switch, the current limiting unit, the signal acquisition management unit and the management power input and communication interface;
the power terminal is connected with the main channel switch in series;
the electronic switch is connected with the current limiting unit in series, and the electronic switch and the current limiting unit are connected in parallel with the main channel switch after being connected;
the signal acquisition management unit acquires information at the main channel switch and information at the electronic switch and controls the main channel switch and the electronic switch;
the signal acquisition management unit is respectively connected with the communication interface and the management power supply input.
5. A battery management system including an anti-reverse switch assembly according to any of claims 1-3, wherein the anti-reverse switch assembly comprises:
the power terminal, the double-touch double-bridge switch, the diode, the current limiting unit, the electronic switch, the signal acquisition management unit and the management power input and communication structure;
the double-contact double-bridge switch comprises a contact 1 and a contact 2, wherein the contact 1 is connected with the contact 2 in parallel;
the power wiring end is connected with the contact 1 in series;
the diode is connected with the contact 2 in series, and the diode and the contact 2 are connected in parallel with the contact 1 after being connected;
the electronic switch is connected with the current limiting unit in series, and the electronic switch and the current limiting unit are connected in parallel with the contact 1 after being connected;
the signal acquisition management unit acquires information at the contact 1, the diode and the electronic switch and controls the double-contact double-bridge switch and the electronic switch;
the signal acquisition management unit is respectively connected with the communication interface and the management power supply input.
6. The battery management system including an anti-reverse switch assembly of claim 5, wherein the two-touch, two-bridge switch comprises:
the first switch comprises 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 electrified, so that the first linkage bridge drives the first contact to realize contact or disconnection, and the first linkage bridge triggers the first position sensing element;
the second switch comprises 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 electrified, so that the second linkage bridge drives the second contact to realize contact or disconnection, and the second linkage bridge triggers the second position sensing element; and
a frame including a first mount and a second mount, the first and second switches being mounted in the first and second mounts, respectively.
7. The battery management system including an anti-reverse switch assembly according to claim 6,
the first position sensing element comprises a first microswitch, and when the first coil drives the first linkage bridge to move to the tail end position, the first linkage bridge triggers the first microswitch, so that the first microswitch disconnects the circuit of the first coil;
the second position sensing element comprises a second microswitch, and when the second coil drives the second linkage bridge to move to the tail end position, the second linkage bridge triggers the second microswitch, so that the second microswitch disconnects the circuit of the second coil.
8. The battery management system including an anti-reverse switch assembly according to claim 6,
the first position sensing element comprises a first position sensor that triggers the first position sensor when the first coil drives the first linkage bridge to move to an end position such that the first position sensor sends an open signal to open the circuit of the first coil;
the second position sensing element includes a second position sensor that triggers the second position sensor when the second coil drives the second linkage bridge to move to an end position such that the second position sensor sends an open signal to open the circuit of the second coil.
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| CN202011270664.1A CN114498798A (en) | 2020-11-13 | 2020-11-13 | Battery management system containing anti-reverse switch assembly |
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| CN202011270664.1A CN114498798A (en) | 2020-11-13 | 2020-11-13 | Battery management system containing anti-reverse switch assembly |
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