CN118971230B - A centralized charging device and method for lithium batteries in a low temperature environment - Google Patents
A centralized charging device and method for lithium batteries in a low temperature environment Download PDFInfo
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- CN118971230B CN118971230B CN202410979242.3A CN202410979242A CN118971230B CN 118971230 B CN118971230 B CN 118971230B CN 202410979242 A CN202410979242 A CN 202410979242A CN 118971230 B CN118971230 B CN 118971230B
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 57
- 238000004321 preservation Methods 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000741 silica gel Substances 0.000 claims description 14
- 229910002027 silica gel Inorganic materials 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000012782 phase change material Substances 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
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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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明公开了一种低温环境锂电池集中充电装置及方法，包含保温箱体、Z字形操作面板、第一加热器件和第二加热器件，Z字形操作面板固定在保温箱体内，第一加热器件包含第一硅胶加热膜和托板，第一硅胶加热膜设置在托板的上侧，托板通过安装柱固定在Z字形操作面板上侧平面的下方，第二加热器件包含第二硅胶加热膜和隔板，第二硅胶加热膜设置在Z字形操作面板的下侧平面的上侧，隔板通过安装柱固定在Z字形操作面板的下侧平面的上方。本发明能够对多种型号规格的锂电池进行集中充电，通过温度控制单元可以自动维持箱内处于适于锂电池充电的温度范围，维持箱内温度均匀。
The present invention discloses a centralized charging device and method for lithium batteries in a low temperature environment, comprising a heat preservation box, a Z-shaped operation panel, a first heating device and a second heating device, wherein the Z-shaped operation panel is fixed in the heat preservation box, the first heating device comprises a first silicone heating film and a support plate, the first silicone heating film is arranged on the upper side of the support plate, the support plate is fixed below the upper plane of the Z-shaped operation panel through a mounting column, the second heating device comprises a second silicone heating film and a partition, the second silicone heating film is arranged on the upper side of the lower plane of the Z-shaped operation panel, and the partition is fixed above the lower plane of the Z-shaped operation panel through a mounting column. The present invention can centrally charge lithium batteries of various models and specifications, and can automatically maintain the box in a temperature range suitable for lithium battery charging through a temperature control unit, and maintain a uniform temperature in the box.
Description
Technical Field
The invention relates to a charging device and a charging method, in particular to a centralized charging device and a centralized charging method for lithium batteries in a low-temperature environment, and belongs to the technical field of charging devices.
Background
At present, the characteristics of the lithium battery are obviously influenced by the working environment, particularly, the electrochemical reactivity of the lithium battery is reduced at low temperature, the usability and the charge and discharge performance of the lithium battery are seriously attenuated, lithium ions can be precipitated and accumulated during low-temperature charging, the service life of the lithium battery is seriously influenced, irreversible damage is caused, and even safety accidents are caused.
The battery low-temperature heating technology mainly refers to a series of heating measures adopted in order to improve the charge and discharge performance of the battery and prolong the service life of the battery in a low-temperature environment. For the characteristics of the lithium battery, the overheat and supercooling of the external temperature can lead to the great reduction of the charging efficiency of the battery and potential safety hazards. This requires that the lithium battery charging device be able to quickly warm up to a suitable temperature under low temperature conditions, providing an external heating environment for battery charging, but also not so high as to cause excessive internal temperatures of the charging unit. The prior art methods typically heat the battery by an external heat source, such as by using a heating belt, a heater, or by placing the battery in a heated environment. Or the internal temperature of the battery charging unit is adjusted by utilizing the characteristic that the Phase Change Material (PCM) absorbs or releases heat during the phase change.
The method can provide the internal temperature environment of the charging device, but the internal local temperature overheat condition occurs, in addition, the prior art ignores the monitoring of the internal temperature environment of the box body, so that a user can not accurately grasp the internal temperature condition of the box body of the charging unit, and potential safety hazards are easily generated.
In addition, the existing military charger has single charging device suitable for charging batteries due to different battery types, so that the charging device can not charge multiple batteries in a concentrated manner, and a charging unit for guaranteeing the concentrated charging of the batteries at low temperature is not reported.
Disclosure of Invention
The invention aims to solve the technical problem of providing a centralized charging device and method for lithium batteries in a low-temperature environment, which can realize centralized charging guarantee of various types of batteries and ensure that the internal temperature is suitable for charging the lithium batteries.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides a charging device is concentrated to low temperature environment lithium cell, contains the insulation box, Z font operating panel, first heating device and second heating device, Z font operating panel fixes in the insulation box, first heating device contains first silica gel heating film and layer board, first silica gel heating film sets up the upside at the layer board, the layer board passes through the erection column to be fixed in Z font operating panel upside planar below, the second heating device contains second silica gel heating film and baffle, second silica gel heating film sets up the upside at Z font operating panel's downside planar, the baffle passes through the erection column to be fixed in Z font operating panel's downside planar top.
Further, the heat preservation box body comprises a lower side box body and an upper cover, the rear side of the upper cover is hinged with the rear side of the lower side box body, and the front side of the upper cover is detachably connected with the front side of the lower side box body through a butterfly buckle.
Further, a handle is arranged on the front side of the lower box body.
Further, a temperature display screen and a light-emitting module are arranged on the front side of the upper cover.
Further, an alternating current input interface is arranged on the side face of the upper cover, a plurality of 12V interfaces, a plurality of 36V interfaces and a plurality of USB interfaces are arranged on one side of the upper side plane of the Z-shaped operation panel, and a plurality of thermocouples are further arranged on the upper side surface of the Z-shaped operation panel.
Further, the device also comprises an AC/DC rectifying module, and the AC/DC rectifying module is fixed in the inner cavity of the sealed box body below the upper side plane of the Z-shaped operation panel.
Further, the novel fan box comprises a fan, an air inlet is formed in one side of the lower box body, an air outlet is formed in the other side of the lower box body, the fan is fixed on the inner side of the air outlet of the lower box body, and detachable fan covers are arranged on the outer sides of the air inlet and the air outlet.
Further, the temperature control unit comprises a temperature switch K1, a temperature switch K2, a temperature switch K3 and a bypass switch K4, wherein the operation temperature value of the temperature protection of the temperature switch K1 is 0-40 ℃, the operation temperature value of the temperature protection of the temperature switch K2 is 40 ℃, the operation temperature value of the temperature protection of the temperature switch K3 is 0 ℃, the light emitting module comprises a resistor R1, a rectifier diode D2 and a light emitting diode D1, one end of a starting switch SB is connected with an alternating current L line, the other end of the starting switch SB is connected with one end of a temperature display screen, one end of the temperature switch K1, one end of the temperature switch K3 and one end of the bypass switch K4, the other end of the temperature switch K1 is connected with one end of the temperature switch K2, the other end of the temperature switch K2 is connected with one end of the heating device and one end of the resistor R1, the other end of the resistor R1 is connected with the cathode of the rectifier diode D2 and the anode of the light-emitting diode D1, the other end of the temperature switch K3 is connected with the other end of the bypass switch K4 and the first input end of the AC/DC rectifier module, the 36V output end of the AC/DC rectifier module is connected with a plurality of 36V interfaces, the 12V output end of the AC/DC rectifier module is connected with a plurality of 12V interfaces, the 5V output end of the AC/DC rectifier module is connected with a plurality of USB interfaces, and the other end of the temperature display screen, the other end of the heating device, the anode of the rectifier diode D2, the cathode of the light-emitting diode D1 and the second input end of the AC/DC rectifier module are connected.
A centralized charging method of lithium batteries in a low-temperature environment is based on a centralized charging device of the lithium batteries in the low-temperature environment and comprises the following steps:
When the temperature in the box is raised to above 0 ℃, the temperature switch K3 is automatically closed, a charging circuit starts to work to charge a battery, when the temperature in the box is raised to above 40 ℃, the temperature switch K1 and the temperature switch K2 are automatically opened, a heating device loses electricity to stop working, the light-emitting diode D1 is extinguished, the charging circuit maintains a normal working state, and the battery is charged;
When the initial external environment temperature is between 0 and 40 ℃, the charging device is connected with alternating current, the starting switch SB is closed, the temperature switch K1 and the temperature switch K2 are automatically closed, the temperature switch K3 is automatically closed, at the moment, a heating device in the whole charging device works, the light emitting diode D1 is lightened, the charging circuit starts to work, and the battery is charged;
When the initial external environment temperature is above 40 ℃, the charging device is connected with alternating current, the starting switch SB is closed, the fan cover is opened, the cooling fan is operated, the temperature switch K1 and the temperature switch K2 are automatically opened, the light-emitting diode D1 is extinguished, the temperature switch K3 is automatically closed, and only the charging circuit in the whole charging device starts to work at the moment to charge the battery.
Compared with the prior art, the device and the method for intensively charging the lithium batteries in the low-temperature environment have the advantages that the device and the method for intensively charging the lithium batteries in various types and specifications can be provided, the operation is convenient, the structure is simple, the temperature in the box can be automatically maintained in a temperature range suitable for charging the lithium batteries through the temperature control unit, a user can clearly know the temperature in the box, the temperature control unit is simple in structure and low in cost, the automatic starting and the cutting-off of a heating function are realized, and the temperature uniformity in the box is maintained.
Drawings
Fig. 1 is a schematic diagram of a centralized charging device for lithium batteries in a low-temperature environment according to the present invention.
Fig. 2 is a schematic diagram of an open state of a low temperature environment lithium battery concentrated charging device according to the present invention.
Fig. 3 is an internal schematic diagram of a lithium battery centralized charging device in a low-temperature environment according to the present invention.
Fig. 4 is a control circuit diagram of a low-temperature environment lithium battery centralized charging device according to the present invention.
Detailed Description
In order to explain in detail the technical solutions adopted by the present invention to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that technical means or technical features in the embodiments of the present invention may be replaced without inventive effort, and the present invention will be described in detail below with reference to the accompanying drawings in combination with the embodiments.
As shown in fig. 1 and fig. 2, the lithium battery centralized charging device in a low-temperature environment comprises an insulation box body 1, a Z-shaped operation panel 2, a first heating device and a second heating device, wherein insulation layers are arranged on six inner sides of the insulation box body 1, so that the insulation and heat insulation of the interior are conveniently carried out in extremely cold weather. The Z-shaped operation panel 2 is fixed in the heat preservation box 1, the Z-shaped operation panel 2 is composed of an upper side plane, a vertical panel and a lower side plane, the upper side plane and the lower side plane are arranged along the horizontal direction, the vertical panel is vertically arranged, the upper side of the vertical panel is fixedly connected with one side of the upper side plane, the lower side of the vertical panel is fixedly connected with one side of the lower side plane, the height of the vertical panel is consistent with the height of the lower side box in the heat preservation box 1, after the heat preservation box is installed, the upper side plane is flush with the upper side plane of the lower side box, and the lower side plane is supported on the inner bottom surface of the heat preservation box 1. Thus, a relatively closed cavity space is formed between the upper plane and the vertical panel and the insulation box body 1 for installing the internal components of the charging device, and an open groove space on the upper side is formed between the vertical panel, the lower plane and the insulation box body 1, so that the lithium battery to be charged can be placed in the groove space.
As shown in fig. 3, the first heating device comprises a first silica gel heating film 3 and a supporting plate 4, the first silica gel heating film 3 is arranged on the upper side of the supporting plate 4, the supporting plate 4 is fixed below the upper plane of the zigzag operation panel 2 through a mounting column 5, the second heating device comprises a second silica gel heating film 6 and a partition 7, the second silica gel heating film is arranged on the upper side of the lower plane of the zigzag operation panel, and the partition is fixed above the lower plane of the zigzag operation panel through a mounting column. Because the charger and the lithium battery are required to be placed on the Z-shaped operation panel 2, in order to avoid directly heating the lithium battery, the first heating device is arranged on the supporting plate, and the upper side of the second heating device is separated by the partition plate, so that a certain space interlayer exists between the two silica gel heating films and the using interface, the direct contact with the shell or the using interface is avoided, and the heat circulation in the whole insulation box body 1 is realized through heat exchange between the heat conduction mode and the surrounding air.
The silica gel heating film can also be replaced by a positive temperature coefficient thermistor heater.
As shown in fig. 1 and 2, the heat-insulating box 1 comprises a lower box 8 and an upper cover 9, wherein the rear side of the upper cover 9 is hinged with the rear side of the lower box 8, and the front side of the upper cover 9 is detachably connected with the front side of the lower box 8 through a butterfly buckle 10. The inside of the upper cover 9 is upwardly protruded so that a large receiving space can be formed between the inside of the upper cover 9 and the upper side plane of the zigzag operating panel 2 to place various types of lithium batteries for charging.
The front side of the lower side box body 8 is provided with a handle 11, and the handle 11 can conveniently move the charging device, so that the charging device is suitable for field operations.
The front side of the upper cover 9 is provided with a temperature display screen 12 and a light emitting module 13. The temperature display screen 12 can carry out real-time show to the temperature in the insulation can 1, because when charging, insulation can 1 need be in the closed condition, and the outside at insulation can 1 is installed to temperature display screen 12, can show inside temperature in real time to the person of facilitating the use knows the inside behavior of insulation can 1 in time. The light emitting module 12 is used for prompting whether to be in a heating state, so that a user can know the internal charging state and the internal charging state in time.
The side of the upper cover 9 is provided with an ac input interface 14, and can be directly connected with ac power sources such as mains supply or field portable generators through the ac input interface 14. One side of the upper plane of the zigzag operation panel 2 is provided with a plurality of 12V interfaces 15, a plurality of 36V interfaces 16 and a plurality of USB interfaces 17, which are adapted to input voltages of communication devices such as military battery chargers, 18650 chargers, mobile phones and the like. The upper side surface of the Z-shaped operation panel 2 is also provided with a plurality of thermocouples 18, and data collected by the thermocouples 18 are displayed through the temperature display screen 12.
As shown in fig. 3, the low-temperature lithium battery centralized charging device of the invention further comprises an AC/DC rectifying module 19, wherein the AC/DC rectifying module 19 is fixed in the inner cavity of the sealed box body 1 below the upper side plane of the zigzag operation panel 2. The input range of the AC/DC rectifying module is 90V-264V and 4 Hz-63 Hz, and the AC/DC rectifying module can respectively output 36V, 12V and 5V direct current voltages for charging of other chargers or mobile phones. The AC/DC rectifying module 19 may be an integrated rectifying module with three voltage outputs, or may be a rectifying module with three different voltage outputs.
The invention relates to a centralized charging device for lithium batteries in a low-temperature environment, which further comprises a fan, wherein one side of a lower box body 8 is provided with an air inlet, the other side of the lower box body 8 is provided with an air outlet, the fan is fixed at the inner side of the air outlet of the lower box body 8, and the outer sides of the air inlet and the air outlet are provided with detachable fan covers 20. When the temperature in the sealed box body 1 is too high, the fan covers 20 on the air inlet and the air outlet are opened, the fan is started to radiate the heat in the sealed box body 1, and when the temperature is not high, the fan covers 20 are kept in a closed state so as to ensure the whole sealing and heat insulation performance of the sealed box body 1.
The invention discloses a centralized charging device for lithium batteries in a low-temperature environment, which also comprises a temperature control unit, as shown in fig. 4, wherein the temperature control unit comprises a temperature switch K1, a temperature switch K2, a temperature switch K3 and a bypass switch K4, the operation temperature value of the temperature switch K1 temperature protection is 0-40 ℃, namely, the temperature switch is kept on when the temperature in a box is lower than 0 ℃, the temperature switch is kept off when the temperature in the box is higher than 40 ℃, the operation temperature value of the temperature switch K2 temperature protection is kept on when the temperature in the box is lower than 40 ℃, the temperature switch K3 temperature protection is kept off when the temperature in the box is higher than 40 ℃, the operation temperature value of the temperature switch K3 temperature protection is 0 ℃, the temperature switch is opened below 0 ℃, and the temperature switch is kept on above 0 ℃. The light-emitting module comprises a resistor R1, a rectifier diode D2 and a light-emitting diode D1, one end of a starting switch SB is connected with an alternating current L line, the other end of the starting switch SB is connected with one end of a temperature display screen, one end of a temperature switch K1, one end of a temperature switch K3 and one end of a bypass switch K4, the other end of the temperature switch K1 is connected with one end of a temperature switch K2, the other end of the temperature switch K2 is connected with one end of a heating device and one end of the resistor R1, the other end of the resistor R1 is connected with a cathode of the rectifier diode D2 and an anode of the light-emitting diode D1, the other end of the temperature switch K3 is connected with the other end of the bypass switch K4 and a first input end of an AC/DC rectifying module, a 36V output end of the AC/DC rectifying module is connected with a plurality of 36V interfaces, a 5V output end of the AC/DC rectifying module is connected with a plurality of USB interfaces, the other end of the temperature display screen, the other end of the heating device, the anode of the rectifier diode D2 and a second input end of the AC/DC rectifying module are connected. When the temperature is lower than 0 ℃, the AC/DC rectifying module is not output due to the disconnection of the temperature switch K3, so that a military charger, a 18650 charger and a USB output module which are connected behind the AC/DC rectifying module cannot work below 0 ℃. When the battery needs to be charged below 0 ℃ under emergency conditions, a user can charge the battery by closing the bypass switch K4 to enable the military charger, the 18650 charger and the USB output module to work under low-temperature power on. The rectifying diode D2 and the light emitting diode D1 are reversely connected in series, the rectifying tube D2 is cut off when the alternating voltage is positive, the light emitting diode D1 is positively conducted to normally emit light, and meanwhile the rectifying tube D2 is clamped. The rectifier D2 is turned on when the alternating current is reversed, and the light emitting diode D1 is clamped. The light emitting diode D1 is fixed on the charging unit housing panel, and when the system is in a heating state, the light emitting diode D1 is turned on, so that a user can clearly know that the system is in the heating state.
A temperature switch is a device for measuring and controlling or detecting temperature. It can open or close the circuit when a preset temperature is reached, thereby controlling the temperature. The temperature switch is a switch made of metal elements, and the elements deform after being heated so as to drive the electric contact to act. The device adopts a temperature switch and mainly aims at controlling and maintaining the safe operation of the circuit in a preset temperature range. The circuit can avoid the harm of the over-high or over-low temperature of the environment to the battery charging, and ensure the normal charging state of the military lithium battery.
The temperature switches K1 and K2 can be replaced by temperature relays or other temperature controllers.
The invention adopts three independently arranged AC/DC rectifying modules, wherein the first AC/DC rectifying module outputs 36V voltage, the first AC/DC rectifying module is connected with a military battery charger through a fast plug interface, the fast plug interface is provided with a working state indicator lamp, the second AC/DC rectifying module outputs 12V voltage, the second AC/DC rectifying module is connected with a 18650 charger through the fast plug interface, and the third AC/DC rectifying module outputs 5V voltage, and the third AC/DC rectifying module is connected with a USB output interface through the fast plug interface. The military charger and 18650 battery charger can be designed as a charging card seat embedded in the operation panel of the charging unit and are connected with the output ends of the three AC/DC rectifying modules through an internal connecting wire. The charger can also be designed into an independent pluggable charging seat, the output end connectors of the three AC/DC rectifying modules are fixed on the charging unit operation panel, and the extended quick-plug interfaces of the military charger and the 18650 battery charger are in quick-plug connection with the fixed output interfaces of the charging unit operation panel. And the battery is convenient to charge in a concentrated way.
A centralized charging method of lithium batteries in a low-temperature environment is based on a centralized charging device of the lithium batteries in the low-temperature environment and comprises the following steps:
When the temperature in the box is raised to above 0 ℃, the temperature switch K3 is automatically closed, a charging circuit starts to work to charge a battery, when the temperature in the box is raised to above 40 ℃, the temperature switch K1 and the temperature switch K2 are automatically opened, a heating device loses electricity to stop working, the light-emitting diode D1 is extinguished, the charging circuit maintains a normal working state, and the battery is charged;
When the initial external environment temperature is between 0 and 40 ℃, the charging device is connected with alternating current, the starting switch SB is closed, the temperature switch K1 and the temperature switch K2 are automatically closed, the temperature switch K3 is automatically closed, at the moment, a heating device in the whole charging device works, the light emitting diode D1 is lightened, the charging circuit starts to work, and the battery is charged;
When the initial external environment temperature is above 40 ℃, the charging device is connected with alternating current, the starting switch SB is closed, the fan cover is opened, the cooling fan is operated, the temperature switch K1 and the temperature switch K2 are automatically opened, the light-emitting diode D1 is extinguished, the temperature switch K3 is automatically closed, and only the charging circuit in the whole charging device starts to work at the moment to charge the battery.
The invention provides a centralized charging device and a centralized charging method for lithium batteries in a low-temperature environment, which can be used for centralized charging of lithium batteries in various types and specifications, are convenient to operate and simple in structure, can automatically maintain the temperature in a box in a temperature range suitable for charging the lithium batteries through a temperature control unit, can enable a user to clearly know the temperature in the box, and is simple in structure and low in cost, namely, the automatic starting and the cutting-off of a heating function are realized, and the temperature in the box is maintained to be uniform.
The present invention is not limited to the preferred embodiments, and the present invention is described above in any way, but is not limited to the preferred embodiments, and any person skilled in the art will appreciate that the present invention is not limited to the embodiments described above, while the invention has been described with respect to specific examples including presently preferred modes of carrying out the invention, those skilled in the art will appreciate that there are numerous variations and permutations of the above described embodiments that fall within the spirit and scope of the invention as set forth in the appended claims.
Claims (7)
1. The lithium battery centralized charging device in the low-temperature environment is characterized by comprising an insulation box body, a Z-shaped operation panel, a first heating device and a second heating device, wherein the Z-shaped operation panel is fixed in the insulation box body, the first heating device comprises a first silica gel heating film and a supporting plate, the first silica gel heating film is arranged on the upper side of the supporting plate, the supporting plate is fixed below the upper side plane of the Z-shaped operation panel through a mounting column, the second heating device comprises a second silica gel heating film and a partition board, the second silica gel heating film is arranged on the upper side of the lower side plane of the Z-shaped operation panel, and the partition board is fixed above the lower side plane of the Z-shaped operation panel through the mounting column;
the heat preservation box body comprises a lower box body and an upper cover, the rear side of the upper cover is hinged with the rear side of the lower box body, and the front side of the upper cover is detachably connected with the front side of the lower box body through a butterfly buckle;
The temperature control unit comprises a temperature switch K1, a temperature switch K2, a temperature switch K3 and a bypass switch K4, wherein the operation temperature value of the temperature protection of the temperature switch K1 is 0-40 ℃, the operation temperature value of the temperature protection of the temperature switch K2 is 40 ℃, the operation temperature value of the temperature protection of the temperature switch K3 is 0 ℃, the light emitting module comprises a resistor R1, a rectifier diode D2 and a light emitting diode D1, one end of a starting switch SB is connected with an alternating current L line, the other end of the starting switch SB is connected with one end of a temperature display screen, one end of the temperature switch K1, one end of the temperature switch K3 and one end of the bypass switch K4, the other end of the temperature switch K1 is connected with one end of the temperature switch K2, the other end of the temperature switch K2 is connected with one end of a heating device and one end of the resistor R1, the other end of the resistor R1 is connected with a cathode of the rectifier diode D2 and an anode of the light emitting diode D1, the other end of the temperature switch K3 is connected with a first input end of the bypass switch K4 and an AC/DC rectifying module, one end of the AC/DC rectifying module is connected with a plurality of AC/DC output ends 36V/DC interfaces of the AC/DC output module, and a plurality of the AC/DC output ends of the AC/DC output module are connected with the AC/DC output ends of the AC/DC interface 12, and the AC interface of the AC/DC interface module is connected with the first input end of the AC/DC interface 12, and the AC interface 2, the AC interface is connected with the AC interface module, and the AC interface is connected.
2. The concentrated charging device for lithium batteries in a low-temperature environment according to claim 1, wherein a handle is arranged on the front side of the lower side box body.
3. The lithium battery concentrated charging device in a low-temperature environment according to claim 1, wherein a temperature display screen and a light-emitting module are arranged on the front side of the upper cover.
4. The lithium battery centralized charging device in a low-temperature environment according to claim 1, wherein an alternating current input interface is arranged on the side face of the upper cover, a plurality of 12V interfaces, a plurality of 36V interfaces and a plurality of USB interfaces are arranged on one side of the upper side plane of the Z-shaped operation panel, and a plurality of thermocouples are further arranged on the upper side surface of the Z-shaped operation panel.
5. The concentrated charging device for lithium batteries in a low temperature environment according to claim 1, further comprising an AC/DC rectifying module, wherein the AC/DC rectifying module is fixed in an inner cavity of the sealed box body below the upper side plane of the Z-shaped operation panel.
6. The lithium battery centralized charging device in a low-temperature environment of claim 1, further comprising a fan, wherein an air inlet is formed in one side of the lower box, an air outlet is formed in the other side of the lower box, the fan is fixed on the inner side of the air outlet of the lower box, and detachable fan covers are arranged on the outer sides of the air inlet and the air outlet.
7. A method for intensively charging lithium batteries in a low-temperature environment, based on the device for intensively charging lithium batteries in a low-temperature environment as claimed in any one of claims 1 to 6, characterized by comprising the steps of:
When the temperature in the box is raised to above 0 ℃, the temperature switch K3 is automatically closed, a charging circuit starts to work to charge a battery, when the temperature in the box is raised to above 40 ℃, the temperature switch K1 and the temperature switch K2 are automatically opened, a heating device loses electricity to stop working, the light-emitting diode D1 is extinguished, the charging circuit maintains a normal working state, and the battery is charged;
When the initial external environment temperature is between 0 and 40 ℃, the charging device is connected with alternating current, the starting switch SB is closed, the temperature switch K1 and the temperature switch K2 are automatically closed, the temperature switch K3 is automatically closed, at the moment, a heating device in the whole charging device works, the light emitting diode D1 is lightened, the charging circuit starts to work, and the battery is charged;
When the initial external environment temperature is above 40 ℃, the charging device is connected with alternating current, the starting switch SB is closed, the fan cover is opened, the cooling fan is operated, the temperature switch K1 and the temperature switch K2 are automatically opened, the light-emitting diode D1 is extinguished, the temperature switch K3 is automatically closed, and only the charging circuit in the whole charging device starts to work at the moment to charge the battery.
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| CN109546855B (en) * | 2018-12-28 | 2023-12-29 | 深圳市西林电气技术有限公司 | Structure of vehicle-mounted charger |
| AU2021101117A4 (en) * | 2021-03-02 | 2021-04-29 | Byreddy, Narmada MS | Smart ev charging time estimation system and method thereof |
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