CN218733314U - Electric system of spare lithium battery of motor home - Google Patents
Electric system of spare lithium battery of motor home Download PDFInfo
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- CN218733314U CN218733314U CN202222465193.0U CN202222465193U CN218733314U CN 218733314 U CN218733314 U CN 218733314U CN 202222465193 U CN202222465193 U CN 202222465193U CN 218733314 U CN218733314 U CN 218733314U
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model belongs to the technical field of car as a house stand-by power supply, concretely relates to car as a house reserve lithium cell electric system, the switch contact of the charging relay who sets up through establishing ties and the switch contact of the relay that discharges form lithium cell charge-discharge circuit to parallelly connected the same and opposite diode and the diode that discharges of direction and lithium cell charge-discharge circuit's discharge current direction of switching on respectively on charging relay and the relay that discharges, with the switch contact of the relay that discharges of breaking off under lithium cell full charge state, break off the switch contact of the relay that discharges under lithium cell under-voltage state. The lithium battery charging and discharging circuit is formed by connecting the switch contact of the charging relay and the switch contact of the discharging relay in series, so that charging and discharging are realized, and the lithium battery can be protected in a full-charge or under-voltage state based on the fact that the discharging diode and the charging diode are respectively connected in parallel on the switch contact of the charging relay and the switch contact of the discharging relay.
Description
Technical Field
The utility model belongs to the technical field of car as a house stand-by power supply, concretely relates to car as a house spare lithium cell electrical system.
Background
At present, most of the standby lithium battery products of motor homes adopt a single-relay same-port charging and discharging electrical system, a multi-relay different-port charging and discharging electrical system or a protection board same-port electrical system. In the single-relay same-port charging and discharging electrical system, because lithium batteries need to be fully charged or over-discharged for protection, the relays need to be disconnected to protect the lithium batteries, so that the power failure of a living area of a motor home is caused, and the customer experience is influenced; the multi-relay different-port charging and discharging system can be used for charging and discharging through different loops, so that the problem of power failure in a living area caused by full charging or over-discharging protection of a lithium battery is solved, but an electrical system is complex, so that the modification difficulty is high, and the parallel connection of one loop of the whole vehicle charging and discharging equipment is difficult to realize by adopting the multi-relay different-port charging and discharging system; in addition, the current inside the electrical system of the protection board is detected as a shunt resistor, so that the large current or the small current of the electrical system cannot be well detected, the residual electric quantity (called SOC) of the battery cannot be accurately calculated, the SOC of the battery jumps, and the use experience of touring car clients is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a car as a house spare lithium cell electrical system for when solving prior art and adopting the different mouthful charge-discharge system of many relays, there is the problem that the electrical system complicacy leads to the repacking degree of difficulty to be big.
In order to solve the technical problem, the utility model provides a standby lithium battery electrical system for a motor home, which comprises a lithium battery module and a lithium battery charging and discharging loop; the lithium battery charging and discharging loop comprises a switch contact of a charging relay and a switch contact of a discharging relay which are arranged in series; a switch contact of the charging relay is connected with a discharging diode in parallel, wherein the conducting direction of the discharging diode is the same as the discharging current direction of the lithium battery charging and discharging loop; the switch contact of the charging relay is used for being disconnected under the full-electricity state of the lithium battery, and the switch contact of the discharging relay is used for being disconnected under the under-voltage state of the lithium battery.
The beneficial effects are as follows: the charging and discharging relay is connected with the discharging relay in parallel to form a lithium battery charging and discharging loop in series, the charging and discharging are realized, the discharging diode and the charging diode are connected in parallel respectively based on the switching contact of the charging relay and the switching contact of the discharging relay, the switching contact of the charging relay can be disconnected in the full-charge state of the lithium battery, the lithium battery can be discharged outwards through the discharging diode and the switching contact of the discharging relay, the switching contact of the discharging relay is disconnected in the undervoltage state of the lithium battery, the charging process of the lithium battery can be performed through the charging diode and the switching contact of the charging relay, namely, the charging and discharging process under the normal condition can be realized through setting the relay, the protection process under the lithium battery protection state (under the full-charge state or the undervoltage state of the lithium battery) is realized, the charging and discharging different ports are avoided through the setting, one loop of the charging and discharging equipment can be connected in parallel, the circuit connection is reduced, the lithium battery electric system is simplified, the vehicle electric system is reduced, and the refitting difficulty of the charging and discharging is realized seamlessly.
Further, the switch contact of the charging relay and the switch contact of the discharging relay are connected by BMS control.
The on-off of the switch contact of the charging relay and the switch contact of the discharging relay is controlled by a BMS (battery management system), so that the charging and discharging loop of the lithium battery is switched on and off, and the lithium battery is protected under the protection state of the lithium battery (the full-charge state or the undervoltage state of the lithium battery).
Further, the lithium battery module supplies power and is connected with the BMS, and the BMS and the power supply loop of the lithium battery module are also provided with switch contacts of the self-locking relay in series for being disconnected under the undervoltage state of the lithium battery module.
Through connecting electrical system with the lithium battery module power supply, can use the lithium cell from the power supply system for the BMS power supply to when the lithium cell is undervoltage, can initiatively discern the power supply circuit who cuts off the controller, reduce the battery and cross the probability of putting, protect the lithium cell.
Further, still the cluster is equipped with binary channels hall current sensor's magnetic face on the lithium cell charge-discharge circuit, and BMS is connected to binary channels hall current sensor's detection output.
When the low channel 20A range and the high channel 350A range of the two-channel Hall current sensor are equipped, the accurate detection of the currents as low as 0.2A and as high as 350A can be realized, the problem that a series of small currents such as the discharging of small-power electric appliances of motor homes and the low-power charging of solar energy cannot be detected can be effectively solved, and the accurate calculation of the SOC value of the standby lithium battery of the motor homes is realized.
And further, the lithium battery charging and discharging circuit further comprises a switch contact of a magnetic latching relay connected in series on the lithium battery charging and discharging circuit, and the switch contact of the magnetic latching relay is used for being disconnected when the switch contact of the charging relay or the switch contact of the discharging relay fails.
Be equipped with magnetic latching relay, only need provide the impulse current that is less than 1S during the action, utilize magnetic latching relay electromagnetic property, the actuation state is power consumptive not, can reduce lithium electric system from power consumptive power consumption to a certain extent, improve battery system available energy, negative pole magnetic latching relay has increased control redundancy simultaneously, when the switch contact trouble (for example adhesion) of charge-discharge relay promptly, the switch contact disconnection of accessible impulse current control magnetic latching relay, and then cut off charge-discharge circuit, make car as a house reserve lithium cell electrical system safe and reliable more.
Further, the magnetic latching relay also comprises a pre-charging circuit which is connected in parallel with two ends of the switch contact of the magnetic latching relay.
By connecting the pre-charging circuit on the magnetic latching relay in parallel, before the switch contact of the magnetic latching relay is closed (namely before the lithium battery charging and discharging loop is conducted), the pre-charging loop is closed first, so that the impact current of an external capacitor at the moment of electrifying the standby lithium battery electrical system of the motor home is reduced, and the current when the lithium battery charging and discharging loop is closed is further reduced.
Further, still include the heating circuit, the heating circuit includes the switch contact and the heating film of the heating relay that set up in series to when ambient temperature is less than the low temperature threshold, for lithium cell group heating.
Through setting up heating circuit, when the battery is in low temperature environment, can heat for lithium cell group through heating circuit, guarantee that lithium cell group can normally work under low temperature environment still, avoided because low temperature leads to the condition of the unusual living area outage of lithium cell group.
Further, the heating circuit is connected in parallel at the two ends of the external output port of the lithium battery charging and discharging circuit.
Through parallelly connected at lithium cell charge and discharge circuit's the export both ends to outside with heating circuit, under low temperature environment, can enough supply power to heating circuit with the mode of outside power supply, in order to realize the heating to lithium cell group, again can be when the outage of external power supply system, the discharge process through charge and discharge circuit supplies power to heating circuit, in order to realize heating to lithium cell group, the heating process to lithium cell group has been guaranteed promptly under low temperature environment, and then the normal work of lithium cell group under low temperature environment has been guaranteed.
Further, the lithium battery charging and discharging circuit further comprises a fuse serially connected to the lithium battery charging and discharging circuit.
The fuse is that when the electric current surpassed the specified value, the fuse-element fusing is made to the heat that produces to self, and the short-circuit protection is carried out through setting up the fuse to the electrical apparatus of open circuit, and then guarantees car as a house reserve lithium cell electrical system's equipment safety.
Further, the lithium battery pack further comprises a fuse which is connected in series with a power supply loop of the BMS and the lithium battery module.
Through set up the fuse between BMS and lithium cell group, can be when the electric current that flows to BMS is too big, disconnection lithium cell group and the power supply connecting circuit between the BMS reach the effect of protection BMS.
Drawings
Fig. 1 is the utility model discloses a car as a house reserve lithium cell electrical system schematic diagram.
Wherein, 1, a discharge diode; 2. a charging diode; 3. a charging relay; 4. a discharge relay; 5. a fuse; 6. A latching relay; 7. a negative pole magnetic latching relay; 8. a pre-charging relay; 9. pre-charging a resistor; 10. a double-channel Hall current sensor; 11. heating the membrane with silica gel; 12. heating the relay; 13. a 10A fuse; 14. an output positive connector; 15. an output negative connector; 16. and a reset switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the following description, in conjunction with the accompanying drawings and embodiments, will explain the technical principles and practical applications of the present invention in further detail.
The embodiment of the electric system of the lithium battery for the caravan comprises the following steps:
the electric system of the spare lithium battery for the motor home in the embodiment comprises a lithium battery and a lithium battery charging and discharging loop, as shown in fig. 1, an output positive connector 14 and an output negative connector 15 are used for being externally connected with charging and discharging equipment, a switch contact of a charging relay 3 and a switch contact of a discharging relay 4 are serially arranged on the lithium battery charging and discharging loop, the switch contact of the charging relay and the switch contact of the discharging relay are respectively connected with a discharging diode 1 and a charging diode 2 in parallel, the direction of current flowing through the discharging diode 1 is the same as the direction of discharging current of the lithium battery charging and discharging loop, and the direction of current flowing through the charging diode 2 is the same as the direction of charging current of the lithium battery charging and discharging loop. The switch contact of the charging relay is used for being disconnected in the state that the lithium battery is fully charged, and the switch contact of the discharging relay is used for being disconnected in the state that the lithium battery is undervoltage.
The lithium battery charging and discharging circuit is formed by connecting a switch contact of a charging relay and a switch contact of a discharging relay in series, so that the charging and discharging of the same port are realized, the discharging diode and the charging diode are respectively connected in parallel on the basis of the switch contact of the charging relay and the switch contact of the discharging relay, the lithium battery can be charged by disconnecting the switch contact of the charging relay under the state that the lithium battery is fully charged, namely, the charging and discharging process under the normal condition can be realized by arranging the relay, the corresponding diode and the control over the relay under the condition that the lithium battery is undervoltage, the protection process under the lithium battery protection state (under the full-power or undervoltage state of the lithium battery) can be realized by disconnecting the switch contact of the discharging relay, the charging and discharging different ports can be avoided through the arrangement, the parallel connection of the charging and discharging equipment in one loop can be realized, the line connection can be reduced, the spare lithium battery electric system of the motor home can be simplified, the refitting difficulty of the motor home electric system can be reduced, and the seamless charging and discharging can be realized.
The electric system of the spare lithium battery of the motor home in the embodiment further comprises a pre-charging system, a heating system, a self-power supply system, a short-circuit protection device, a high-precision current detection system, a magnetic holding switch and a battery management system.
The battery management system (namely BMS) is used for controlling the on-off of a switch in the electric system of the standby lithium battery of the motor home so as to control the on-off of the corresponding loop and further ensure the normal work of the corresponding loop.
The pre-charging system is arranged between the negative electrode end of the lithium battery and the output negative connector, the pre-charging system comprises a pre-charging relay 8 and a pre-charging resistor 9, a switch contact of the pre-charging relay 8 and the pre-charging resistor 9 are connected in series to form a pre-charging loop, and the pre-charging loop is conducted to pre-charge external connection equipment of the standby lithium battery electrical system of the motor home. The switch contact of negative pole magnetic latching relay 7 establishes ties on lithium cell charge-discharge circuit, and parallelly connected with the pre-charging system, after the pre-charging is finished, the switch contact of closed magnetic latching relay, switch on lithium cell charge-discharge circuit, make lithium cell charge-discharge circuit can normal work, and be equipped with the magnetic latching relay, only need provide the pulse current that is less than 1s during the action, utilize magnetic latching relay electromagnetic property, the actuation state is power consumptive, can reduce lithium electric system from power consumptive power consumption to a certain extent, improve battery system available energy, negative pole magnetic latching relay has increased control redundancy simultaneously, when charging-discharging relay adhesion promptly, the switch contact disconnection of magnetic latching relay is controlled to accessible pulse current, and then cut off charge-discharge circuit, make car as a house reserve lithium cell electrical system safe and reliable more.
The heating system of this embodiment is including the heating circuit that the switch contact and the silica gel heating film 11 of the heating relay 12 of series connection setting formed to heating circuit connects in parallel in the both ends of exporting positive connector and export negative connector, can enough realize the heating process through the mode of outside power supply through this setting, also can discharge through the inside lithium cell of car as a house spare lithium cell electrical system and realize the heating process, has avoided the unable condition of working of heating system after the outage of outside power supply equipment.
The self-powered system is a self-powered system for the battery management system, namely a lithium battery is powered and connected with the battery management system, so that the power supply for the battery management system is realized, a switch contact of the self-locking relay 6 and a 10A fuse 13 are also serially arranged on a circuit (namely a power supply loop of the BMS and the lithium battery module) for the lithium battery pack to be powered and connected with the battery management system, and the fuse is arranged to block large current for the battery management system, so that the effect of protecting the battery management system is achieved; the switch contact of the self-locking relay is arranged on a self-powered loop of the battery management system, so that when the lithium battery is under-voltage, the power supply loop of the cut-off controller can be actively identified, the over-discharge probability of the battery is reduced, and the lithium battery is protected.
The short-circuit protection device is a fuse 5 serially arranged on a lithium battery charging and discharging loop, the fuse fuses a melt by heat generated by the fuse when the current exceeds a specified value, and an electric appliance of a circuit is disconnected to perform short-circuit protection by arranging the fuse, so that the equipment safety of a lithium battery electric system for a motor home is ensured. High-precision current detection system is including detecting the binary channels hall current sensor 10 of lithium cell charge-discharge circuit electric current, as figure 1, binary channels hall current sensor 10's magnetic induction face is established on charge-discharge circuit in series, and BMS connects binary channels hall current sensor 10's signal output part in order to receive the electric current of lithium cell charge-discharge circuit, binary channels hall current sensor in this embodiment uses low pass way 20A range, high pass way 350A range, and can realize down to 0.2A based on binary channels hall current sensor's precision, the accurate detection of high to 350A electric current, can effectively solve car as a house miniwatt with electrical apparatus discharge, the unable problem that detects of a series of undercurrents such as solar energy low-power charging, realize the reserve lithium cell SOC value accurate calculation of car as a house.
Based on the spare lithium battery electrical system for the motor home in this embodiment, the output signal end of the dual-channel hall current sensor is connected with the BMS, the current signal of the lithium battery charging and discharging loop can be transmitted to the BMS, so that a corresponding current control strategy can be made after the BMS receives the current signal, the temperature collecting end ST2 in fig. 1 is connected with the temperature sensor of the lithium battery, so that the temperature condition of the lithium battery can be received, the voltage collecting end ST2 is further connected with the lithium battery, and is used for collecting the voltage condition of the lithium battery, and transmitting the collected voltage condition of the lithium battery and the collected temperature condition of the lithium battery to the BMS, so that the BMS can perform a corresponding voltage control strategy (for example, a control strategy when the lithium battery is fully charged or undervoltage of the lithium battery) and a temperature control strategy (for example, a control strategy when the temperature of the lithium battery is lower than a low temperature threshold), and the following processes can be specifically realized:
the hand is released after the external reset switch is pressed for 2 seconds, the lithium battery pack supplies power to the battery management system through the switch, the self-locking relay is closed after the battery management system has no fault through self-checking (temperature, voltage, insulation and current), and the system enters an initialization power-on process. During electrification, the pre-charging system is closed, the charging and discharging relays are sequentially closed, the external electrical components of the whole motor home are pre-charged, the magnetic latching negative electrode relay is closed after pre-charging is successful, the pre-charging relay is disconnected, initialization electrification is completed, and the standby power supply of the motor home can be charged and discharged normally. Under the lithium cell normal condition, the charge-discharge return circuit is the same, and under the lithium cell protection state, the charge-discharge current passes through the inside rectifier bridge of battery system and fills, the different return circuits of discharge relay, realizes that the outside charge-discharge of lithium cell system is with mouthful. Meanwhile, the electric system can easily realize maximum 20kA short-circuit current breaking through the fuse, realize accurate detection of current as low as 0.2A and as high as 350A through the dual-channel Hall current sensor, and realize accurate calculation of the SOC value of the standby lithium battery of the motor home; the PTC silica gel heating film (other types of heating films can be selected as other embodiments) can heat the battery in the low-temperature environment of the battery, so that the power battery pack can continuously output, and the cycle life of the battery is prolonged.
The lithium battery of the spare lithium battery electrical system for the motor home is a lithium battery core group, and the lithium battery core group is formed by lithium iron phosphate or ternary lithium batteries through series-parallel connection and is adaptive to 12V, 24V and 48V electric voltage platforms of the motor home; this BMS power supply mode is the self-power mode, lithium cell group output is just being connected to the 10A fuse through the wire, prevent the switch contact that anti-reverse diode is connected to outside reset switch 16 and latching relay, closed reset switch 16 back, reset switch 16 connects to latching relay's switch contact and BMS (being battery management system) power supply keyon department through plug-in components (CN 3), press reset switch when manual, after the BMS power supply, inhale and latching relay, latching relay's switch contact closure, loosen outside reset switch this moment, the BMS power supply is through latching relay power supply. After the battery reaches the undervoltage protection state, BMS disconnection latching relay, BMS outage realizes battery system power-off protection.
This car as a house spare battery electrical system power-on process: and (3) switching on an external reset switch 16, supplying power to the BMS, self-checking the temperature, voltage, insulation and current of the lithium battery by the BMS, attracting a self-locking relay to self-power the BMS, and then entering a pre-charging flow. During pre-charging, the charging relay, the discharging relay and the pre-charging relay are sequentially attracted, the pre-charging is carried out for 3s, the negative pole magnetic latching relay is attracted, the switch contact of the pre-charging relay is disconnected after 1s, the pre-charging is completed, and the battery is electrified.
This reserve electrical system of car as a house rectification switching-over system theory of operation: under normal conditions, the battery is charged and discharged through a charging relay-discharging relay-output positive connector; when the battery is fully charged, the charging relay is disconnected, the system cannot be charged and can be discharged, the battery is discharged outside through the discharging diode-discharging relay-output positive connector, so that charging overvoltage protection is realized, and when the battery is discharged to the preset electric quantity value, the charging relay is closed, and the battery is allowed to be charged; when the battery is under-voltage, the discharging relay is switched off, the system cannot discharge and can be charged, the battery charges the battery through the output positive connector, the charging diode and the charging relay, so that discharging under-voltage protection is realized, and when the battery is charged to the preset electric quantity value, the discharging relay is closed, and the battery is allowed to discharge.
This car as a house spare battery electrical system is equipped with PTC silica gel heating film heating circuit, control through heating relay, PTC silica gel heating film can effectively avoid the battery dry combustion method problem, the mode of taking the charging heating battery under the battery low temperature environment (temperature is less than 0 ℃), when the equal charging equipment power of solar energy is not enough or the charging equipment disconnection, adopt the mode heating battery of battery self-heating, prevent the unusual living area outage of lithium cell, make the low temperature of power battery group continue to export, increase battery cycle life. The main heating process is as follows: when the ambient temperature is lower than 0 ℃, the lithium battery detects the charging current, the BMS closes the heating relay, the charging relay is cut off to heat the lithium battery, and the charging current cannot enter the battery at the moment, so that the lithium battery is prevented from being charged at low temperature; when the solar energy equal-charging equipment is insufficient in power or the charging equipment is disconnected, the battery heats the battery through a discharging diode-discharging relay-heating film path in a self-discharging mode, when the temperature of the battery is heated to a preset temperature, the charging relay is closed by the system, the heating relay is disconnected, and the lithium battery system is restored to a charging and discharging state.
Through the pre-charging circuit, external capacitor impact current of the electric system of the standby lithium battery of the motor home at the moment of electrifying the whole electric system of the motor home is reduced, and current when a charging and discharging loop of the lithium battery is closed is further reduced; the charging/power consumption of small-power charging/discharging equipment (solar charging and lighting in a car) of the motor home is accurately detected through the two-channel high-precision Hall current sensor; the charging and discharging control of the lithium battery system of the motor home at the same port is realized through a rectification reversing system (namely a discharging diode 1 and a charging diode 2), and the lithium battery system of the motor home is in seamless connection with a motor home inverter, a generator, a lead-acid battery, a solar controller and a charger; the self-power consumption of the lithium battery system is reduced to a certain extent by the characteristic that the negative pole magnetism keeps the relay not to consume power; through the self-powered system, the over-discharge risk of the lithium battery can be effectively reduced. And then can enough satisfy the normal work of the reserve lithium cell electrical system of car as a house through setting up the reserve lithium cell electrical system of car as a house of this embodiment, also guaranteed the safe operation of the reserve lithium cell electrical system of car as a house to the reserve lithium cell electrical system of car as a house effectively solves the different mouthful problem of car as a house lithium cell charge-discharge based on the embodiment, reduces the line connection, simplifies the reserve electricity electrical system of car as a house, reduces the car as a house electrical system repacking degree of difficulty, has realized the seamless linking of charge-discharge.
Claims (10)
1. A spare lithium battery electrical system for a motor home is characterized by comprising a lithium battery module and a lithium battery charging and discharging loop; the lithium battery charging and discharging loop comprises a switch contact of a charging relay and a switch contact of a discharging relay which are arranged in series; a switch contact of the charging relay is connected with a discharging diode in parallel, wherein the conducting direction of the discharging diode is the same as the discharging current direction of the lithium battery charging and discharging loop; the switch contact of the charging relay is used for being disconnected under the full-electricity state of the lithium battery, and the switch contact of the discharging relay is used for being disconnected under the under-voltage state of the lithium battery.
2. The lithium battery backup electrical system for a recreational vehicle of claim 1, wherein the switch contacts of the charging relay and the switch contacts of the discharging relay are connected by BMS control.
3. The lithium battery electrical system for the caravan standby according to claim 2, wherein the lithium battery module is in power supply connection with a BMS (battery management system), and a switch contact of a self-locking relay is further arranged on a power supply loop of the BMS and the lithium battery module in series and is used for being disconnected under the undervoltage state of the lithium battery module.
4. The electrical system of the lithium battery for the motor home as claimed in claim 2 or 3, wherein the lithium battery charging and discharging loop is further provided with a magnetic sensing surface of a dual-channel Hall current sensor in series, and a detection output end of the dual-channel Hall current sensor is connected with the BMS.
5. The lithium battery electrical system for caravan standby according to claim 1, further comprising a switch contact of a magnetic latching relay serially connected to a charge and discharge circuit of the lithium battery, the switch contact of the magnetic latching relay being configured to be opened when the switch contact of the charge relay or the switch contact of the discharge relay fails.
6. The lithium battery electrical system for caravan backup according to claim 5, further comprising a pre-charge circuit connected in parallel across the switch contacts of the magnetic latching relay.
7. The lithium battery backup electrical system for a recreational vehicle of claim 1, further comprising a heating circuit including switch contacts of a heating relay and a heating membrane arranged in series to heat the lithium battery cell pack when an ambient temperature is below a low temperature threshold.
8. The lithium battery electrical system for the caravan standby according to claim 7, wherein the heating circuit is connected in parallel to two ends of an external output port of the lithium battery charging and discharging circuit.
9. The lithium battery electrical system for motor home as claimed in claim 1, further comprising a fuse serially connected to the lithium battery charging and discharging circuit.
10. The lithium battery electrical system for a caravan of claim 3, further comprising a fuse connected in series to a power supply circuit of the BMS and the lithium battery module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222465193.0U CN218733314U (en) | 2022-09-15 | 2022-09-15 | Electric system of spare lithium battery of motor home |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222465193.0U CN218733314U (en) | 2022-09-15 | 2022-09-15 | Electric system of spare lithium battery of motor home |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218733314U true CN218733314U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222465193.0U Active CN218733314U (en) | 2022-09-15 | 2022-09-15 | Electric system of spare lithium battery of motor home |
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| CN (1) | CN218733314U (en) |
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- 2022-09-15 CN CN202222465193.0U patent/CN218733314U/en active Active
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