CN116505107B - Battery BMS protection board and battery pack - Google Patents
Battery BMS protection board and battery pack Download PDFInfo
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- CN116505107B CN116505107B CN202310784099.8A CN202310784099A CN116505107B CN 116505107 B CN116505107 B CN 116505107B CN 202310784099 A CN202310784099 A CN 202310784099A CN 116505107 B CN116505107 B CN 116505107B
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- 230000007246 mechanism Effects 0.000 claims abstract description 126
- 239000007788 liquid Substances 0.000 claims abstract description 86
- 230000017525 heat dissipation Effects 0.000 claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 239000002609 medium Substances 0.000 description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 37
- 230000008878 coupling Effects 0.000 description 16
- 238000010168 coupling process Methods 0.000 description 16
- 238000005859 coupling reaction Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 238000003825 pressing Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to the field of battery protection, and discloses a battery BMS protection plate and a battery assembly, wherein the battery BMS protection plate comprises a connection assembly and a battery assembly, the connection assembly is used for being inserted into the battery assembly to form electric connection, the battery assembly comprises a battery shell, a battery body, a heat dissipation mechanism, a BMS protection plate and a recognition device are arranged in the battery shell, the heat dissipation mechanism is used for carrying out liquid cooling heat dissipation on the battery body after the connection assembly is inserted into the battery assembly, the BMS protection plate is matched with the recognition device to recognize the connection assembly, if the connection assembly is matched with the battery assembly, the BMS protection plate sends out a signal, the recognition device and the connection assembly form electric connection, and if the connection assembly is not matched with the battery assembly, the BMS protection plate does not send out a signal, the recognition device cannot form electric connection with the connection assembly, and the recognition device takes liquid flow of the heat dissipation mechanism as a driving medium to realize connection with the connection assembly.
Description
Technical Field
The invention relates to the field of battery protection, in particular to a battery BMS protection plate and a battery assembly.
Background
Along with the continuous development of technology, emerging technologies such as electric automobile, unmanned aerial vehicle and the like are continuously improved, battery technologies such as lithium battery become important energy storage carriers, however, problems such as overcharge, overdischarge, short circuit and the like are easy to occur in the use process of the lithium battery, and battery damage and even safety are possibly endangered, so a BMS battery protection board is generated, and becomes a key component for ensuring battery safety, and the BMS battery protection board mainly has the functions of battery charge and discharge state monitoring, overcharge and overdischarge protection, temperature protection and balance management, and achieves the purposes of improving battery performance, ensuring safety and prolonging battery life, however, the current battery technology still has the following defects: during charging and discharging, a plug assembly for connection between equipment and a battery is generally limited in specification, if the battery and the plug assembly are damaged due to careless and incorrect use, a fire accident can be seriously caused, for example, an electric vehicle is taken as an example for illustration: the battery specifications of the battery commonly used in the market are 48v/60v/72v,48v is divided into 48v12ah, 48v20ah and 48v32ah, and the motor power is 350W and 400W, so that the battery cars with each battery specification are provided with corresponding matched chargers, and the chargers cannot be used commonly, however, in the actual use process, sometimes a car owner forgets to take the chargers, and the chargers of the battery cars beside the car are used, at the moment, although the specifications of the chargers are different, the charger can also be used for charging, but the service lives of the battery (i.e. a battery) and the charger are easily influenced, even fire accidents easily occur, and the current BMS battery protection plate does not have the function of identifying whether the plug or the charger connected with the battery is corresponding matched, so that the BMS battery protection plate and the battery assembly are required to be improved and optimized.
Based on the above, the present invention provides a battery BMS protection plate and a battery pack.
Disclosure of Invention
In order to solve the problems mentioned in the background above, the present invention provides a battery BMS protection plate and a battery pack.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
The utility model provides a battery BMS protection shield and battery pack, including coupling assembling and battery pack, coupling assembling is used for inserting the battery pack and constitutes the electricity and be connected, battery pack includes battery case, be provided with the battery body in the battery case, heat dissipation mechanism, BMS protection shield and recognition device, heat dissipation mechanism is used for carrying out the heat dissipation to the battery body through the liquid cooling mode after coupling assembling inserts the battery pack, BMS protection shield and recognition device cooperation are used for discerning coupling assembling, if coupling assembling matches with the battery pack, then BMS protection shield sends out the signal, recognition device constitutes electrically conductive connection with coupling assembling, recognition device constitutes electrically conductive connection with the battery body, if coupling assembling does not match with the battery pack, then BMS protection shield does not send the signal, recognition device can't constitute electrically conductive connection with coupling assembling, recognition device is used for using heat dissipation mechanism's liquid flow as driving medium, realize the electrically conductive connection with coupling assembling.
Further, the identification device comprises a mounting shell, the mounting shell is opened towards one end of the socket and is internally provided with a mounting frame, an identification mechanism, an unlocking mechanism, a connecting mechanism and a pulling switch are arranged in the mounting shell, and the identification mechanism is used for being matched with the BMS protection board to identify the connecting assembly;
the connecting mechanism is arranged to switch between a locking state, an unlocking state and a connecting state, wherein the connecting mechanism is locked and cannot be connected with the connecting component in the locking state, the locking of the connecting mechanism is removed in the unlocking state, and the connecting mechanism is connected with the connecting component in the connecting state;
the unlocking mechanism is used for receiving signals sent by the BMS protection plate and switching the connecting mechanism from a locking state to an unlocking state by taking liquid flow in the heat dissipation mechanism as a driving medium;
the extraction switch is used for being manually pressed and driven by a user to enable the connecting mechanism to be switched from the connecting state to the locking state.
Further, be provided with the socket that is used for supplying coupling assembling plug on the battery case, coupling assembling includes the plug, the terminal surface of plug is provided with protruding and well projection in the side perpendicularly, the side is protruding to be provided with two sets of and is located the both sides of plug respectively, the protruding one side that is on the back of both sides is provided with the slot, the tank bottom of slot is provided with sheetmetal one, well projection is located between two sets of side archs, the inside cavity and the inside of well projection are provided with the resistance, two sets of trepanning have been seted up to the free end terminal surface of well projection, all be provided with the sleeve in every set of trepanning, the both ends of resistance stretch into in the sleeve with two telescopic connection and tip respectively.
Further, recognition mechanism is including setting up the connecting rod on the mounting bracket, and the extending direction of connecting rod is on a parallel with the extending direction of socket, and the one end of connecting rod orientation socket is provided with conductive contact, is connected through wiring one between conductive contact and the BMS protection shield, and the connecting rod corresponds the resistance and is provided with two sets of, and the outside slidable mounting of connecting rod has the slide, and the outside of connecting rod still overlaps and is equipped with spring one, and the elasticity of spring one orders about the slide to be the removal that is close to the socket on the connecting rod.
Further, the connecting mechanism comprises two groups of connecting members which are respectively positioned at two sides of the identifying mechanism, the connecting members comprise a locking unit and a connecting unit, the connecting unit is used for forming connection with the connecting assembly, and the locking unit is used for preventing the connecting unit from being connected with the connecting assembly;
the locking unit comprises a limiting rod which is slidably arranged on the mounting frame and a spring IV which is used for driving the limiting rod to move close to the socket, the sliding direction of the limiting rod is parallel to the extending direction of the socket, and a limiting groove is formed in one side, facing the identification mechanism, of the limiting rod;
the locking unit further comprises a limiting block which is slidably arranged on the mounting frame, the limiting block is positioned on one side of the limiting rod, which faces the identification mechanism, the sliding direction of the limiting block is perpendicular to the sliding direction of the limiting rod, in an initial state, the free end of the limiting block is inserted into the limiting groove, and the locking unit further comprises a spring five for driving the limiting block to move close to the limiting rod;
the mounting frame is also hinged with a deflection rod, the two ends of the deflection rod are respectively a stress end and a force application end, one side of the limiting block, which faces the deflection rod, extends to form a linkage bulge, and the force application end of the deflection rod is contacted with the linkage bulge.
Further, the connecting unit comprises a support body which is slidably mounted on the mounting frame and a spring six which is used for driving the support bodies in the two groups of connecting members to move close to each other, the sliding direction of the support body is parallel to the sliding direction of the limiting block, a lug is arranged on the support body and located on one side of the limiting rod, which is away from the identifying mechanism, a metal sheet II is arranged on the side face of the lug, which faces the limiting rod, and the metal sheet II is connected with the battery body through a wiring II.
Further, the unlocking mechanism is arranged between the two groups of connecting members and comprises a pump shell, convex plates are arranged in the pump shell, the convex plates are in an annular shape and are provided with two groups, an inner fixing shell is fixedly arranged between the inner annular surfaces of the two groups of convex plates, the center of the inner fixing shell coincides with the center of the pump shell, middle holes are formed in the middle positions of the two end surfaces of the inner fixing shell, which are hollow in the inner part and along the sliding direction of the support body, opposite orifices of the two middle holes coaxially extend to form a sleeve, an annular inner piston is sleeved between the sleeve and the cavity wall of the inner fixing shell, and a second spring is arranged between the inner piston and the end part of the inner fixing shell;
two groups of pump plugs respectively positioned at two sides of the inner fixed shell are sleeved in the pump shell, push rods coaxially extend from the end surfaces of the two groups of pump plugs, the free ends of the push rods extend out of the pump shell and are in contact with the stress end of the deflection rod, and the linkage protrusions and the free ends of the push rods are positioned at the same side of the deflection rod.
Further, one end of the pump plug is opened, one end of the pump plug is closed, the push rod is arranged at the closed end, the outer circular surface of the pump plug is provided with a circular groove, the bottom of the circular groove is provided with connecting holes, the connecting holes are used for communicating the circular groove with the pump shell, the connecting holes are arranged in an array manner along the circumferential direction of the pump plug, and damping units used for preventing the push rod from moving are arranged at two ends of the pump shell along the sliding direction of the bracket body;
the side face of the pump shell is provided with a liquid inlet nozzle and a liquid outlet nozzle, the orifice area of the liquid outlet nozzle is equal to half of the orifice area of the liquid inlet nozzle, the liquid outlet nozzle is provided with two groups and is respectively positioned at one side of the two groups of pump plugs opposite to each other, and when the pump plugs are contacted with the end part of the pump shell, the liquid outlet nozzle is completely communicated with the annular groove;
the area between the two groups of convex plates is a middle area, the middle area is communicated with the inner fixed shell through a liquid inlet, the middle area is also communicated with a liquid inlet nozzle, and the liquid inlet nozzle and the liquid outlet nozzle are connected in series on a liquid flow path of the heat dissipation mechanism.
Further, the disconnecting frame is slidably mounted on the mounting frame, the sliding direction of the disconnecting frame is parallel to the sliding direction of the limiting rod, the disconnecting frame is provided with a first inclined plane located between two groups of support bodies, the first inclined plane is provided with two groups of inclined planes, the distance between the first inclined planes is increased along the sliding direction of the disconnecting frame and the direction from the socket to the inside of the battery shell, the first inclined plane contacts with the support bodies, and the pulling switch is used for driving the disconnecting frame to move close to the socket.
Further, a trigger switch is further arranged on the liquid flow path of the heat dissipation mechanism, and the trigger switch is used for being triggered to drive the disconnection frame to move close to the socket when the temperature of the liquid medium of the heat dissipation mechanism exceeds a preset value.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the connecting assembly can be identified by the identifying device and the BMS protection plate, if the connecting assembly is matched with the battery assembly, the BMS protection plate sends out a signal, the identifying device and the connecting assembly form conductive connection, and the identifying device and the battery body form conductive connection, so that the battery body can be charged or powered by the connecting assembly, if the connecting assembly is not matched with the battery assembly, the BMS protection plate does not send out a signal, and the identifying device and the connecting assembly cannot form conductive connection, so that the identifying purpose is achieved, and the technical problems mentioned in the background art are solved;
the invention has the core that the unlocking mechanism takes the flowing of the liquid medium of the heat dissipation mechanism as a driving medium, on one hand, the function of saving the installation space can be achieved, on the other hand, the description of the working process of the unlocking mechanism in the specific implementation mode can be referred to, in the process of driving the connecting mechanism to be in an unlocking state, finally, after driving is finished, the pump plug is not moved and the liquid outlet is completely communicated with the annular groove, and the sum of the orifice areas of the two groups of liquid outlet is equal to the orifice area of the liquid inlet, namely the flowing-in and flowing-out channel cross section area of the liquid medium in the pump shell is equal, so that after the connecting assembly and the battery assembly are inserted, when the micro water pump drives the flowing of the liquid medium to dissipate heat of the battery assembly, the internal structure of the micro water pump is in a normal pressure state and the pressure fluctuation is very small, the micro water pump can be regarded as no fluctuation, the damage to the micro water pump is not caused, the service life of the micro water pump is prolonged, and the pump which is required to be in a state of fluctuation for a long time, when the pump driving the flowing of the liquid medium is in the micro water pump, the state is in a state, the state of the micro water pump is not influenced by the structure in the fluctuation for a long time, so that the internal structure of the micro water pump is not influenced by the internal structure of the micro water pump is influenced by the flowing, and the flowing of the liquid medium, and the micro water pump is in the condition of the whole is in the condition of the normal pressure and is not required to be in the condition similar to be in the condition after the condition of being inserted.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a connection assembly;
FIG. 3 is a schematic diagram of a battery assembly;
FIG. 4 is a schematic diagram II of a battery assembly;
FIG. 5 is a schematic diagram of a heat dissipation mechanism and an identification device;
FIG. 6 is a schematic view of a sink;
FIG. 7 is a schematic diagram of an identification device;
FIG. 8 is a second schematic diagram of an identification device;
FIG. 9 is a schematic diagram III of an identification device;
FIG. 10 is a partial schematic view of an identification device;
FIG. 11 is a cross-sectional view of the unlocking mechanism I;
FIG. 12 is a second cross-sectional view of the unlocking mechanism;
FIG. 13 is a cross-sectional view of the trigger switch;
FIG. 14 is a schematic view of a connection mechanism;
fig. 15 is a schematic view of a tap changer.
The reference numerals in the drawings are:
100. a connection assembly; 101. a plug; 102. a side projection; 103. a slot; 104. a middle convex column; 105. a sleeve; 106. a resistor;
200. a battery assembly; 201. a battery case; 202. a battery body; 203. a fan; 204. a micro water pump; 205. a water tank; 2051. a first fin; 2052. a second fin; 206. a bottom plate; 207. a heat sink; 208. a first connecting pipe; 209. a second connecting pipe; 210. a third connecting pipe; 211. a connecting pipe IV;
300. BMS protection board;
400. an identification device; 410. an identification mechanism; 411. a connecting rod; 412. a slide plate; 413. a first spring; 414. wiring I; 420. an unlocking mechanism; 421. a pump housing; 4211. a liquid inlet nozzle; 4212. a liquid outlet nozzle; 422. an inner fixed shell; 423. an inner piston; 424. a second spring; 425. a pump plug; 4251. a ring groove; 4252. a connection hole; 426. a push rod; 427. a damping body; 428. a third spring; 429. a fifth connecting pipe; 430. a connecting mechanism; 431. a limit rod; 432. a spring IV; 433. a limiting block; 434. a spring V; 435. a deflection rod; 436. a bracket body; 437. a spring six; 438. a bump; 439. wiring II; 440. taking a pull switch; 441. pressing a pressing rod; 442. a convex frame; 443. a spring seven; 450. triggering a switch; 451. a trigger housing; 452. triggering a plug; 453. a plug rod; 454. a spring eight; 460. the frame is disconnected.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1 to 15, a battery BMS protection plate and a battery pack includes a connection assembly 100 and a battery pack 200, wherein the connection assembly 100 refers to a charging plug or a power taking plug for being inserted into the battery pack 200 to form an electrical connection.
The battery assembly 200 comprises a battery shell 201, a battery body 202, a heat dissipation mechanism, a BMS protection plate 300 and an identification device 400 are arranged in the battery shell 201, the heat dissipation mechanism is used for dissipating heat to the battery body 202 through a liquid cooling mode after the connection assembly 100 is inserted into the battery assembly 200, the BMS protection plate 300 and the identification device 400 are used for identifying the connection assembly 100, if the connection assembly 100 is matched with the battery assembly 200, the BMS protection plate 300 sends out a signal, the identification device 400 and the connection assembly 100 form conductive connection, the identification device 400 and the battery body 202 form conductive connection, so the battery body 202 can be charged or powered through the connection assembly 100, if the connection assembly 100 is not matched with the battery assembly 200, the BMS protection plate 300 does not send out a signal, the identification device 400 cannot form conductive connection with the connection assembly 100, the identification purpose is achieved, and the technical problem mentioned in the background art is solved.
Further, since the internal space of the battery assembly 200 is limited, the identification device 400 uses the liquid flow of the heat dissipation mechanism as a driving medium to realize the conductive connection with the connection assembly 100, thereby achieving the purposes of dissipating heat from the battery body 202 and identifying the connection assembly 100 in the limited internal space of the battery assembly 200.
Heat dissipation mechanism:
as shown in fig. 3 to 6, the heat dissipation mechanism includes a water tank 205, a micro water pump 204, and a bottom plate 206, wherein a storage chamber is provided in the water tank 205, a liquid medium, such as an aqueous medium or an insulating oil, is stored in the storage chamber for heat dissipation, heat dissipation grooves 207 distributed in a wave shape are provided in the bottom plate 206, and the battery body 202 is mounted on the bottom plate 206.
The storage chamber is communicated with one end of the heat dissipation groove 207 through a first connecting pipe 208, the liquid inlet end of the micro water pump 204 is communicated with the storage chamber through a second connecting pipe 209, the liquid outlet end of the micro water pump 204 is communicated with the identification device 400 through a third connecting pipe 210, and the identification device 400 is communicated with the other end of the heat dissipation groove 207 through a fourth connecting pipe 211.
The heat dissipation mechanism further comprises a fan 203 facing the water tank 205, and the battery shell 201 is provided with heat dissipation holes facing the water tank 205.
In the process of inserting the connection assembly 100 into the socket arranged on the battery shell 201, the identification device 400 and the BMS protection plate 300 are matched to identify the connection assembly 100, if the connection assembly is correct, the micro water pump 204 is started, so that liquid medium flows in the water tank 205, the heat dissipation tank 207 and the identification device 400, on one hand, heat dissipation of the battery body 202 is achieved, and on the other hand, the conductive connection between the identification device 400 and the connection assembly 100 is achieved by utilizing the flow of the liquid medium.
Further, a first fin 2051 is arranged in the storage cavity of the water tank 205, a second fin 2052 is arranged on the outer surface of the water tank 205, the contact area between the water tank and the liquid medium is increased through the first fin 2051, the contact area between the air flow and the water tank 205 is increased through the second fin 2052, the two are matched, the heat dissipation of the water tank 205 by the fan 203 is improved, and the heat dissipation effect of the heat dissipation mechanism to the battery body 202 is further improved.
Identification device 400:
as shown in fig. 7 to 9, the recognition device 400 includes a mounting case in which a recognition mechanism 410, an unlocking mechanism 420, a connection mechanism 430, and a withdrawal switch 440 are disposed, wherein the recognition mechanism 410 is used to cooperate with the BMS protection plate 300 to recognize the connection assembly 100.
The connection mechanism 430 is configured to switch between a locked state, in which the connection mechanism 430 is locked and cannot be connected to the connection assembly 100, an unlocked state, in which the locking of the connection mechanism 430 is removed, and a connected state, in which the connection mechanism 430 is connected to the connection assembly 100.
The unlocking mechanism 420 is used for receiving a signal sent by the BMS protection plate 300 and switching the connection mechanism 430 from the locked state to the unlocked state by using the flow of the liquid medium in the heat dissipation mechanism as a driving medium.
The pull switch 440 is used to be manually pressed by a user to switch the connection mechanism 430 from the connected state to the locked state.
The connection assembly 100 and the identification mechanism 410:
as shown in fig. 2, the connection assembly 100 includes a plug 101, the end surface of the plug 101 is vertically provided with two sets of side protrusions 102 and a middle protrusion 104, wherein the side protrusions 102 are respectively located at two sides of the plug 101, one side of the two sets of side protrusions 102 opposite to each other is provided with a slot 103, and the slot 103 is provided with a metal sheet one at the bottom thereof, which corresponds to a copper pin in the prior art plug.
The middle convex column 104 is positioned between the two groups of side bulges 102, the inside of the middle convex column 104 is hollow, a resistor 106 is arranged in the middle convex column 104, two groups of sleeve holes are formed in the end face of the free end of the middle convex column 104, sleeves 105 are arranged in each group of sleeve holes, two ends of the resistor 106 are respectively connected with the two sleeves 105, and the end parts of the resistor 106 extend into the sleeves 105.
As shown in fig. 10, the mounting case is opened toward one end of the socket provided on the battery case 201, and the inside is provided with a mounting frame, the recognition mechanism 410 includes a connection rod 411 provided on the mounting frame, the extension direction of the connection rod 411 is parallel to the extension direction of the socket, one end of the connection rod 411 toward the socket is provided with a conductive contact, the conductive contact is connected with the BMS protection plate 300 through a first connection wire 414, the connection rod 411 is provided with two groups corresponding to the resistor 106, preferably, in this drawing, the resistor 106 is provided with two groups, and then the connection rod 411 is correspondingly provided with four groups.
The outer part of the connecting rod 411 is slidably provided with a sliding plate 412, the outer part of the connecting rod 411 is also sleeved with a first spring 413, and the elastic force of the first spring 413 drives the sliding plate 412 to move on the connecting rod 411 to approach the socket.
In the process of inserting the connecting assembly 100 into the socket, the sleeve 105 on the middle convex column 104 is sleeved outside the connecting rod 411 in advance, before the connecting assembly 100 is connected with the connecting mechanism 430, the end part of the resistor 106 is contacted with the conductive contact, so that the resistor 106 is connected with the BMS protection plate 300 in series, a test element for testing the resistance value of the resistor 106 is integrated on the BMS protection plate 300, the resistance value test can be realized in the prior art, and the following insertion of the connecting assembly 100 cannot be performed by the connecting assembly 100 when the resistance value of the resistor 106 accords with a preset value, if the resistance value is not the preset value, the signal is not sent by the BMS protection plate 300, and the connecting assembly 100 cannot be inserted next.
The connection assembly 100 and the connection mechanism 430:
as shown in fig. 7-9, the connection mechanism 430 includes two sets of connection members that are respectively located on both sides of the identification mechanism 410.
As shown in fig. 14, the coupling member includes a locking unit and a coupling unit, the latter constituting a coupling with the coupling assembly 100, the former preventing the latter from being coupled with the coupling assembly 100.
The locking unit comprises a limiting rod 431 slidably mounted on the mounting frame and a fourth spring 432 for driving the limiting rod 431 to move close to the socket, the sliding direction of the limiting rod 431 is parallel to the extending direction of the connecting rod 411, and a limiting groove is formed in one side of the limiting rod 431, facing the identification mechanism 410.
The locking unit further comprises a limiting block 433 which is slidably mounted on the mounting frame, the limiting block 433 is located on one side of the limiting rod 431 facing the identification mechanism 410, the sliding direction of the limiting block 433 is perpendicular to the sliding direction of the limiting rod 431, in an initial state, the free end of the limiting block 433 is inserted into the limiting groove, and the locking unit further comprises a spring five 434 used for driving the limiting block 433 to move close to the limiting rod 431.
The mounting rack is also hinged with a deflection rod 435, two ends of the deflection rod 435 are respectively named as a stress end and a force application end, wherein a linkage protrusion extends towards one side of the deflection rod 435 from the limiting block 433, and when the force application end of the deflection rod 435 contacts with the linkage protrusion and the deflection rod 435 deflects, the linkage protrusion can be shifted to enable the limiting block 433 to be separated from the limiting groove or reversely deflect to cancel the shifting of the linkage protrusion.
The connecting unit comprises a bracket body 436 which is slidably arranged on the mounting frame and a spring six 437 which is used for driving the bracket bodies 436 in the two groups of connecting members to move close to each other, the sliding direction of the bracket body 436 is parallel to the sliding direction of the limiting block 433, a bump 438 is arranged on the bracket body 436, the bump 438 is positioned on one side of the limiting rod 431, which is away from the identifying mechanism 410, a metal sheet II is arranged on the side of the bump 438, which faces the limiting rod 431, and the metal sheet II is connected with the battery body 202 through a wiring two 439.
In the initial state, the spring six 437 is in a compressed state.
In the process of inserting the connection assembly 100 into the socket, when the resistance value of the resistor 106 accords with the preset value, the connection assembly 100 is matched, the BMS protection plate 300 sends a signal to the unlocking mechanism 420, the unlocking mechanism 420 drives the deflection rod 435 to deflect, the limiting block 433 is separated from the limiting groove, the connection mechanism 430 is switched to an unlocking state, meanwhile, as the plug 101 is inserted into the socket by holding the connection assembly 100 by the hand of a user, the limiting block 433 is separated from the limiting groove, the limiting rod 431 is retracted under the pushing of the side boss 102, when the slot 103 is aligned with the boss 438, the blocking of the limiting rod 431 is lost, the spring six 437 releases elasticity, the boss 438 is inserted into the slot 103, the metal sheets I and II are contacted, at this time, the connection mechanism 430 is switched to a connection state, the connection assembly 100 completes connection with the battery assembly 200, and as the boss 438 is inserted into the slot 103, the connection assembly 100 is firmly positioned in the battery assembly 200;
in addition, after the connection is completed, the end part of the limiting block 433 is contacted with the limiting rod 431, the limiting block 433 is not moved under the limiting obstruction of the limiting rod 431, and the spring five 434 is kept compressed;
when the connection assembly 100 needs to be pulled out, the pull switch 440 is pressed to move the support bodies 436 of the two groups of connection members away from each other, the protruding blocks 438 are separated from the slots 103, the spring IV 432 releases the elastic force to enable the limit rod 431 to advance and reset, the plug 101 is pushed out, the spring V434 releases the elastic force to enable the end part of the limit block 433 to be reinserted into the limit groove after the limit rod 431 is reset, and the connection mechanism 430 is switched to a locking state.
Unlocking mechanism 420:
as shown in fig. 7-10, the unlocking mechanism 420 is disposed between the two sets of connecting members.
As shown in fig. 10-12, the unlocking mechanism 420 includes a pump casing 421, an inner fixing casing 422 is fixedly disposed in the pump casing 421, specifically, a convex plate is disposed in the pump casing 421, the convex plate is in a ring shape and is provided with two groups, the inner fixing casing 422 is fixedly disposed on inner annular surfaces of the two groups of convex plates, the center of the inner fixing casing 422 coincides with the center of the pump casing 421, middle holes are formed in the inner hollow of the inner fixing casing 422 and along the middle positions of two end surfaces of the support body 436 in the sliding direction, two opposite orifices coaxially extend to form a sleeve, an annular inner piston 423 is sleeved between the sleeve and the cavity wall of the inner fixing casing 422, a second spring 424 is disposed between the inner piston 423 and the end part of the inner fixing casing 422, and the inner piston 423 and the second spring 424 are correspondingly provided with two groups.
Two groups of pump plugs 425 are sleeved in the pump shell 421, the two groups of pump plugs 425 are respectively positioned at two sides of the inner fixed shell 422, push rods 426 are coaxially extended from two opposite end surfaces of the two groups of pump plugs 425, the free ends of the push rods 426 extend out of the pump shell 421 and are contacted with the stress ends of the deflection rods 435, and the linkage protrusions and the free ends of the push rods 426 are positioned at the same side of the deflection rods 435.
One end of the pump plug 425 is opened, one end of the pump plug 425 is closed, the push rod 426 is arranged at the closed end, the outer circular surface of the pump plug 425 is provided with a ring groove 4251, the bottom of the ring groove 4251 is provided with a connecting hole 4252, the connecting hole 4252 is used for communication between the ring groove 4251 and the pump shell 421, and a plurality of connecting holes are arranged in an array along the circumferential direction of the pump plug 425.
The pump shell 421 is provided with damping units along the two ends of the sliding direction of the support body 436, and is used for preventing the push rod 426 from moving and further preventing the pump plug 425 from moving, specifically, a damping hole is formed in the end portion of the pump shell 421, a hole cover is arranged at the position, deviating from the hole opening of the push rod 426, a damping body 427 and a third spring 428 located between the damping body 427 and the hole cover are sleeved in the damping hole, a damping groove is formed in the outer circular surface of the push rod 426, the damping body 427 is located in the damping groove in an initial state, and the pump plug 425 is in contact with the end portion of the inner fixing shell 422.
The side of the pump case 421 is provided with a liquid inlet nozzle 4211 and a liquid outlet nozzle 4212, the aperture area of the liquid outlet nozzle 4212 is equal to half of the aperture area of the liquid inlet nozzle 4211, the liquid outlet nozzle 4212 is provided with two groups and is respectively positioned at the opposite sides of the two groups of pump plugs 425, and when the pump plugs 425 are in contact with the end parts of the pump case 421, the liquid outlet nozzle 4212 is completely communicated with the ring groove 4251.
The area between the two sets of convex plates is named as a middle area, the outer circular surface of the inner fixed shell 422 is provided with a liquid inlet hole for communicating the inner cavity of the inner fixed shell with the middle area, and the middle area is also communicated with the liquid inlet nozzle 4211.
The liquid inlet nozzle 4211 is communicated with the third connecting pipe 210, the fifth connecting pipe 429 is arranged at the liquid outlet nozzle 4212, and the heat dissipation groove 207 is communicated with the fifth connecting pipes 429 of the two groups through the fourth connecting pipe 211.
When the resistance of the resistor 106 meets the preset value, the connection assembly 100 is matched, and the BMS protection board 300 sends a signal to the micro water pump 204 and the unlocking mechanism 420:
the micro water pump 204 starts to drive the liquid medium to flow, the liquid medium in the water tank 205 flows into the inner fixed shell 422 sequentially through the connecting pipe II 209, the micro water pump 204, the connecting pipe III 210, the liquid inlet nozzle 4211, the middle area and the liquid inlet hole, and the push rod 426 and the pump plug 425 are not moved at first because of the limitation of the damping unit to the push rod 426, and the pressure in the inner fixed shell 422 increases gradually along with accumulation of the liquid medium, the inner piston 423 retreats, and the spring II 424 is compressed to achieve the pressure accumulation function;
then, when the pressure accumulated in the inner fixed shell 422 reaches the critical point, the pressure in the damping unit is enough to overcome the limit of the damping unit to the push rod 426, the damping body 427 in the damping unit is retracted back into the damping hole, the accumulated pressure is matched with the compressed spring II 424 to drive the pump plug 425 to move at an extremely high speed, so that the pump plug 425 is instantly contacted with the end part of the pump shell 421, meanwhile, the push rod 426 moves to push the deflection rod 435 to deflect the stop block 433 to be separated from the limit groove, the end part of the stop block 433 is close to the notch of the limit groove, the connection mechanism 430 is further switched to an unlocking state, and as the movement of the pump plug 425 is too fast, the liquid medium in the pump shell 421 is not discharged out of the liquid medium through the liquid outlet 4212, and the liquid medium is still continuously injected into the damping hole, so that the pump plug 425 is still supported by the pressure of the liquid medium in the pump shell 421, and meanwhile, the push rod 426 is pressed by the damping body 427, the pressure support is pressed, so that the contact between the pump plug 425 and the end part of the pump shell 421 can be kept for a period of time, the user inserts the plug 101 into the socket, the connection mechanism 430 is switched to a connection state, and the connection mechanism 433 is switched to the state, and the stop rod 431 is kept out of contact with the stop rod 433 and the stop rod 433 after the stop rod 433 is further kept against the stop rod 433, and the stop rod 433 is kept in contact with the stop state;
then, the liquid medium in the pump case 421 flows back into the water tank 205 through the liquid outlet 4212, the fifth connecting pipe 429, the fourth connecting pipe 211, the heat dissipation tank 207, and the first connecting pipe 208 in this order.
From the above, it can be seen that: besides, the unlocking mechanism 420 takes the flowing of the liquid medium of the heat dissipation mechanism as a driving medium, so that the installation space can be saved, in addition, in the process of driving the connecting mechanism 430 to be in an unlocking state, the unlocking mechanism 420 can finally ensure that the pump plug 425 does not move and the liquid outlet nozzles 4212 are completely communicated with the annular groove after driving is finished, and the sum of the orifice areas of the two groups of liquid outlet nozzles 4212 is equal to the orifice area of the liquid inlet nozzle 4211, namely the cross section area of the flowing-in and flowing-out channel of the liquid medium in the pump shell 421 is equal, the micro water pump 204 drives the liquid medium to dissipate heat of the battery assembly 200, the micro water pump 204 is in a normal pressure state, pressure fluctuation can be regarded as no, the damage to the micro water pump 204 is avoided, and the service life of the micro water pump 204 is prolonged.
Pull switch 440:
as shown in fig. 7-9, the mounting frame is slidably provided with a disconnection frame 460, the sliding direction of the disconnection frame 460 is parallel to the sliding direction of the limiting rod 431, the disconnection frame 460 is provided with first inclined planes positioned between two groups of bracket bodies 436, the first inclined planes are provided with two groups, the distance between the first inclined planes increases along the sliding direction of the disconnection frame 460 and the direction from the socket to the inside of the battery shell 201, and the first inclined planes are in contact with the bracket bodies 436; by driving the disconnecting rack 460 to move close to the socket, the bracket bodies 436 in the two groups of connecting members can be pushed to move away from each other through the inclined plane, the connecting mechanism 430 is switched to the locking state, in addition, in the process of switching the connecting mechanism 430 to the unlocking state, the bracket bodies 436 push to infer that the disconnecting rack 460 moves away from the socket through the inclined plane, and the disconnecting rack 460 does not influence the switching of the connecting mechanism 430 to the unlocking mechanism.
As shown in fig. 15, the pull-out switch 440 includes a pressing hole formed on the outer surface of the battery case 201, a pressing rod 441 is slidably mounted in the pressing hole, one end of the pressing rod 441 is located outside the battery case 201 and provided with a button, the other end of the pressing rod extends into the battery case 201 and is provided with a second inclined surface, the second inclined surface can contact with the disconnection frame 460, and the disconnection frame 460 can be pushed to move close to the socket by the second inclined surface.
The outer surface of the battery shell 201 is provided with a convex frame 442, the free end of the convex frame 442 extends into the pressing rod 441, and a spring seven 443 is arranged between the button and the convex frame 442; after the push button is pressed, the push button is released, the push rod 441 is reversely moved under the driving of the spring seven 443 to reset the extraction switch 440, and in addition, the push rod 441 can be limited by the convex frame 442, so that the push rod 441 is prevented from being separated from the pressing hole.
In the preferred embodiment, the battery assembly 200 inevitably generates a large amount of heat during the charge and discharge process, and although the heat dissipation mechanism is used for liquid cooling, if the battery assembly 200 cannot timely dissipate heat due to the reasons of excessively large instantaneous output power, damage to the heat dissipation mechanism, etc., the explosion accident caused by fire easily occurs when the internal temperature of the battery assembly 200 is excessively high, so that:
as shown in fig. 10 and 13, the fifth connecting pipe 429 is provided with a trigger switch 450 for actively driving the connecting mechanism 430 to switch to a locking state when the internal temperature of the battery assembly 200 is abnormal, so as to disconnect the connecting assembly 100 from the battery assembly 200.
Specifically, as shown in fig. 13, the trigger switch 450 is located at one side of the disconnecting rack 460 away from the socket, the trigger switch 450 includes a trigger shell 451, a trigger plug 452 is sleeved in the trigger shell 451, a plug rod 453 extends from the end surface of the trigger plug 452 towards the disconnecting rack 460, the free end of the plug rod 453 extends out of the trigger shell 451, a spring eight 454 is sleeved outside the plug rod 453, the area of the trigger shell 451 located at one side of the trigger plug 452 away from the disconnecting rack 460 is named as a thermal expansion area, a thermal expansion medium is arranged in the thermal expansion area, and a connecting pipe five 429 passes through the thermal expansion area; regardless of whether the heat dissipation mechanism is damaged or not, based on the nature of liquid heat conduction, heat generated inside the battery assembly 200 is absorbed by the liquid medium and then is conducted to the thermal expansion medium in the thermal expansion area, if the temperature inside the battery assembly 200 is normal, the thermal expansion medium does not or slightly thermally expand, if the temperature inside the battery assembly 200 is abnormal, namely, the temperature rises, the thermal expansion medium thermally expands, the pushing trigger plug 452 and the plug rod 453 move, the pushing frame 460 is pushed by the plug rod 453 to move, the connection mechanism 430 is switched to a locking state, and the connection assembly 100 and the battery assembly 200 are disconnected.
The working principle of the invention is as follows:
the user holds the plug 101 and inserts it into the socket of the battery assembly 200 during the insertion process:
firstly, the sleeve 105 on the middle convex column 104 is sleeved outside the connecting rod 411 firstly, so that the end part of the resistor 106 is contacted with the conductive contact, the resistor 106 and the BMS protection plate 300 are connected in series, a test element for testing the resistance value of the resistor 106 is integrated on the BMS protection plate 300, if the resistance value of the resistor 106 accords with a preset value, the connection assembly 100 is matched, the BMS protection plate 300 sends out a signal, and if the resistance value is not the preset value, the BMS protection plate 300 does not send out a signal;
when the resistance value of the resistor 106 accords with the resistance value, the BMS protection board 300 sends a signal to the micro water pump 204 and the unlocking mechanism 420, the micro water pump 204 operates to drive the liquid medium to flow, heat is dissipated in the charging and discharging process of the battery assembly 200, meanwhile, the unlocking mechanism 420 uses the liquid medium to flow as the driving medium to drive the connecting mechanism 430 to be switched to an unlocking state, meanwhile, a user continuously applies force to enable the plug 101 to be inserted into the socket, the connecting mechanism 430 is further switched to the connecting state, and the connecting assembly 100 is connected with the battery assembly 200.
After the charge and discharge are finished, the user presses the button to push the opening frame 460 to move close to the socket through the second inclined plane, and the opening frame 460 moves to push the bracket bodies 436 in the two groups of connecting members to move away from each other through the first inclined plane, so that the connecting mechanism 430 is switched to a locking state, and the connecting assembly 100 and the battery assembly 200 are disconnected.
During charging and discharging, when the internal temperature of the battery assembly 200 is abnormal, the thermal expansion medium thermally expands, the pushing trigger plug 452 and the plug rod 453 move, the plug rod 453 pushes the pushing frame 460 to move, the connection mechanism 430 is switched to a locked state, and the connection assembly 100 and the battery assembly 200 are disconnected.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (9)
1. A battery assembly, characterized in that: the battery pack comprises a battery shell, a battery body, a heat dissipation mechanism, a BMS protection plate and a recognition device are arranged in the battery shell, the heat dissipation mechanism is used for dissipating heat of the battery body through a liquid cooling mode after the battery pack is inserted into the battery pack, the BMS protection plate is matched with the recognition device to recognize the battery pack, if the battery pack is matched with the battery pack, the BMS protection plate sends out a signal, the recognition device and the connection pack form conductive connection, the recognition device and the battery body form conductive connection, if the battery pack is not matched with the battery pack, the BMS protection plate does not send out a signal, the recognition device cannot form conductive connection with the connection pack, and the recognition device is used for realizing conductive connection with the connection pack by taking liquid flow of the heat dissipation mechanism as a driving medium;
the identification device comprises a mounting shell, the mounting shell is provided with an installation frame towards one end opening of a socket, an identification mechanism, an unlocking mechanism, a connecting mechanism and a pulling switch are arranged in the mounting shell, the identification mechanism is used for being matched with a BMS protection plate to identify the connecting assembly, the connecting mechanism is arranged to be switched among a locking state, an unlocking state and a connecting state, when the connecting mechanism is in the locking state, the connecting mechanism cannot be connected with the connecting assembly, when the connecting mechanism is in the unlocking state, the locking of the connecting mechanism is withdrawn, when the connecting mechanism is in the connecting state, the connecting mechanism is connected with the connecting assembly, the unlocking mechanism is used for receiving signals sent by the BMS protection plate and taking liquid flow in the heat dissipation mechanism as a driving medium, so that the connecting mechanism is switched into the unlocking state from the locking state, and the pulling switch is used for being manually pressed and driven by a user, and the connecting mechanism is switched into the locking state from the connecting state.
2. A battery assembly according to claim 1, wherein: the battery shell is provided with a socket for plugging a connecting component, the connecting component comprises a plug, the end face of the plug is vertically provided with side protrusions and middle protruding columns, the side protrusions are provided with two groups and are respectively located at two sides of the plug, one side of each of the two groups of side protrusions is provided with a slot, the slot bottom of each slot is provided with a metal sheet I, the middle protruding column is located between the two groups of side protrusions, the inside of the middle protruding column is hollow and is internally provided with a resistor, the end face of the free end of the middle protruding column is provided with two groups of trepanning, sleeves are respectively arranged in each group of trepanning, and two ends of the resistor are respectively connected with the two sleeves and the end part of each resistor stretches into the sleeve.
3. A battery pack according to claim 2, wherein: the recognition mechanism comprises a connecting rod arranged on the mounting frame, the extending direction of the connecting rod is parallel to the extending direction of the socket, a conductive contact is arranged at one end of the connecting rod, which faces the socket, a connection is arranged between the conductive contact and the BMS protection plate through a wiring, the connecting rod is provided with two groups corresponding to the resistor, and a test element for testing the resistance value is integrated on the BMS protection plate.
4. A battery assembly according to claim 1 or 3, wherein: the connecting mechanism comprises two groups of connecting members which are respectively positioned at two sides of the identifying mechanism, the connecting members comprise a locking unit and a connecting unit, the connecting unit is used for forming connection with the connecting assembly, and the locking unit is used for preventing the connecting unit from being connected with the connecting assembly;
the locking unit comprises a limiting rod which is slidably arranged on the mounting frame and a spring IV which is used for driving the limiting rod to move close to the socket, the sliding direction of the limiting rod is parallel to the extending direction of the socket, and a limiting groove is formed in one side, facing the identification mechanism, of the limiting rod;
the locking unit further comprises a limiting block which is slidably arranged on the mounting frame, the limiting block is positioned on one side of the limiting rod, which faces the identification mechanism, the sliding direction of the limiting block is perpendicular to the sliding direction of the limiting rod, in an initial state, the free end of the limiting block is inserted into the limiting groove, and the locking unit further comprises a spring five for driving the limiting block to move close to the limiting rod;
the mounting frame is also hinged with a deflection rod, the two ends of the deflection rod are respectively a stress end and a force application end, one side of the limiting block, which faces the deflection rod, extends to form a linkage bulge, and the force application end of the deflection rod is contacted with the linkage bulge.
5. A battery pack according to claim 4, wherein: the connecting unit comprises a support body which is slidably arranged on the mounting frame and a spring six which is used for driving the support bodies in the two groups of connecting members to move close to each other, the sliding direction of the support body is parallel to the sliding direction of the limiting block, a lug is arranged on the support body and located on one side of the limiting rod, which is away from the identifying mechanism, the side face of the lug, which faces the limiting rod, is provided with a metal sheet II, the metal sheet II is connected with the battery body through a wiring II, and the spring six is in a compressed state in an initial state.
6. A battery pack according to claim 5, wherein: the unlocking mechanism is arranged between the two groups of connecting members and comprises a pump shell, convex plates are arranged in the pump shell, the convex plates are in an annular shape and are provided with two groups, an inner fixing shell is fixedly arranged between the inner annular surfaces of the two groups of convex plates, the center of the inner fixing shell coincides with the center of the pump shell, middle holes are formed in the inner hollow part of the inner fixing shell and in the middle positions of the two end surfaces along the sliding direction of the support body, two opposite orifices of the middle holes coaxially extend to form a sleeve, an annular inner piston is sleeved between the sleeve and the cavity wall of the inner fixing shell, and a second spring is arranged between the inner piston and the end part of the inner fixing shell;
two groups of pump plugs respectively positioned at two sides of the inner fixed shell are sleeved in the pump shell, push rods coaxially extend from the end surfaces of the two groups of pump plugs, the free ends of the push rods extend out of the pump shell and are in contact with the stress end of the deflection rod, and the linkage protrusions and the free ends of the push rods are positioned at the same side of the deflection rod.
7. A battery pack according to claim 6, wherein: one end of the pump plug is opened, one end of the pump plug is closed, the push rod is arranged at the closed end, the outer circular surface of the pump plug is provided with a circular groove, the bottom of the circular groove is provided with connecting holes, the connecting holes are used for communication between the circular groove and the pump shell, the connecting holes are arranged in an array manner along the circumferential direction of the pump plug, and the two ends of the pump shell along the sliding direction of the bracket body are provided with damping units for preventing the push rod from moving;
the side face of the pump shell is provided with a liquid inlet nozzle and a liquid outlet nozzle, the orifice area of the liquid outlet nozzle is equal to half of the orifice area of the liquid inlet nozzle, the liquid outlet nozzle is provided with two groups and is respectively positioned at one side of the two groups of pump plugs opposite to each other, and when the pump plugs are contacted with the end part of the pump shell, the liquid outlet nozzle is completely communicated with the annular groove;
the area between the two groups of convex plates is a middle area, the middle area is communicated with the inner fixed shell through a liquid inlet, the middle area is also communicated with a liquid inlet nozzle, and the liquid inlet nozzle and the liquid outlet nozzle are connected in series on a liquid flow path of the heat dissipation mechanism.
8. A battery pack according to claim 5 or 7, wherein: the installation rack is provided with a disconnecting rack in a sliding mode, the sliding direction of the disconnecting rack is parallel to the sliding direction of the limiting rod, the disconnecting rack is provided with a first inclined plane which is positioned between two groups of support bodies, the first inclined plane is provided with two groups of inclined planes, the distance between the first inclined planes is increased along the sliding direction of the disconnecting rack and the direction of the socket pointing to the inside of the battery shell, the first inclined plane contacts with the support bodies, and the pulling switch is used for driving the disconnecting rack to move close to the socket.
9. A battery pack according to claim 8, wherein: the liquid flow path of the heat dissipation mechanism is also provided with a trigger switch, and the trigger switch is used for being triggered to drive the disconnection frame to move close to the socket when the temperature of the liquid medium of the heat dissipation mechanism exceeds a preset value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310784099.8A CN116505107B (en) | 2023-06-29 | 2023-06-29 | Battery BMS protection board and battery pack |
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| CN202310784099.8A CN116505107B (en) | 2023-06-29 | 2023-06-29 | Battery BMS protection board and battery pack |
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| CN116505107B true CN116505107B (en) | 2023-09-08 |
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| CN116914892B (en) * | 2023-09-08 | 2023-11-17 | 深圳市岳松科技有限公司 | Lithium battery protection board and abnormal protection device with same |
| CN117335050B (en) * | 2023-12-01 | 2024-02-02 | 深圳市山木新能源科技股份有限公司 | Solid-state energy storage battery pack |
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| CN217824381U (en) * | 2022-07-27 | 2022-11-15 | 浙江科强电子科技有限公司 | Efficient charger |
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| CN116505107A (en) | 2023-07-28 |
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