CN117622030A - Lithium titanate storage battery charge-discharge control system for starting special vehicle - Google Patents
Lithium titanate storage battery charge-discharge control system for starting special vehicle Download PDFInfo
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- CN117622030A CN117622030A CN202311563795.2A CN202311563795A CN117622030A CN 117622030 A CN117622030 A CN 117622030A CN 202311563795 A CN202311563795 A CN 202311563795A CN 117622030 A CN117622030 A CN 117622030A
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- Prior art keywords
- starting
- lithium titanate
- storage battery
- battery
- charging
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 85
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 85
- 238000007599 discharging Methods 0.000 claims abstract description 30
- 239000007858 starting material Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 3
- 239000002253 acid Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a lithium titanate storage battery charge-discharge control system for starting a special vehicle, which solves the problem that the charge-discharge performance of the lithium titanate storage battery for starting at present is greatly affected by temperature in a low-temperature environment. The system comprises a charging loop relay, a discharging loop relay, a battery management system, a lithium titanate battery pack for starting, a vehicle-mounted generator, a key switch, a starter, a lithium titanate storage battery anode for starting, a lithium titanate storage battery cathode for starting, an external charging power supply and related connecting wire harnesses; the invention surrounds the design of the charging and discharging system of the lithium titanate storage battery for starting, provides measure and guarantee for realizing effective charging and discharging of the lithium titanate storage battery for starting in various extreme environments, and simultaneously realizes the function of transmitting the power state to the whole vehicle in real time, so that the power system achieves the aims of digital and intelligent control.
Description
Technical Field
The invention relates to a battery charging and discharging system of a special vehicle, in particular to a lithium titanate storage battery charging and discharging control system for starting the special vehicle.
Background
The existing special vehicle chassis uses a lead-acid storage battery and a lithium titanate storage battery for starting, the lead-acid storage battery is used as a starting power supply with longer service time, the charging and discharging performances of the lead-acid storage battery reach the bottleneck, the deep discharging performance is limited all the time, the energy density of the lead-acid storage battery is lower, and the whole weight of the storage battery with the same required capacity is larger, so that the lead-acid storage battery has certain use limitation. However, although the lithium titanate battery for starting has a high energy density and a light weight, the battery has a large influence on the charge/discharge performance in a low-temperature environment (-40 ℃) due to temperature, and has a limitation in use.
Disclosure of Invention
The invention provides a lithium titanate storage battery charge-discharge control system for starting a special vehicle, which solves the problem that the current lithium titanate storage battery for starting has use limitation because the charge-discharge performance of the lithium titanate storage battery is greatly affected by temperature in a low-temperature environment.
The invention is realized by the following technical scheme:
the lithium titanate storage battery charge-discharge control system for starting the special vehicle comprises a charging loop relay 1, a discharging loop relay 2, a battery management system 3, a lithium titanate battery pack 4 for starting, a vehicle-mounted generator 5, a key switch 6, a starter 7, a lithium titanate storage battery anode 8 for starting, a lithium titanate storage battery cathode 9 for starting, an external charging power supply 10 and related connecting wire harnesses;
charging control circuit: the external charging power supply 10 and the vehicle-mounted generator 5 are connected with a starting lithium titanate storage battery positive electrode 8 and a starting lithium titanate storage battery negative electrode 9, the starting lithium titanate storage battery positive electrode 8 is connected with the charging loop relay 1, the charging loop relay 1 is connected with the battery management system 3 and the starting lithium titanate battery pack 4, and the starting lithium titanate storage battery negative electrode 9 is connected with the starting lithium titanate battery pack 4;
discharge control loop: the positive electrode of the lithium titanate battery pack 4 for starting is connected with the discharging loop relay 2 and the key switch 6, the discharging loop relay 2 is connected with the battery management system 3 and is controlled by the battery management system 3, the negative electrode 9 of the lithium titanate storage battery for starting is connected with the negative electrode of the lithium titanate battery pack 4 for starting, and the negative electrode 9 of the lithium titanate storage battery for starting, the discharging loop relay 2 and the key switch 6 are all connected with the starter 7 to realize the control discharging of the starter 7;
and (3) a charging control process:
when the external charging power source 10 of the lithium titanate storage battery for starting or the vehicle-mounted generator 5 starts to supply power, the battery management system 3 detects the terminal voltages of the positive electrode 8 of the lithium titanate storage battery for starting and the negative electrode 9 of the lithium titanate storage battery for starting to judge whether the charging is needed, and if the battery terminal voltage is lower than 13V, the battery management system 3 controls the charging loop relay 1 to be closed so as to realize the charging of the lithium titanate battery pack 4 for starting. If the battery terminal voltage is higher than 13V, the battery management system 3 will not control the charging loop relay 1 to be closed according to the judgment, so the charging system will not charge the starting lithium titanate battery pack 4;
and (3) a discharge control process:
when the special vehicle needs to be started, the manual control key switch 6 is closed, the battery management system 3 controls the discharge loop relay 2 to be closed when detecting the useful electricity demand of the whole vehicle, at the moment, the starter 7 obtains the current of the lithium titanate battery pack 4 for starting through the discharge loop relay 2, and the vehicle can be started after the starter 7 is electrified. Thus completing the control of the discharge process.
The invention surrounds the design of the charging and discharging system of the lithium titanate storage battery for starting, provides measure and guarantee for realizing effective charging and discharging of the lithium titanate storage battery for starting in various extreme environments, and simultaneously realizes the function of transmitting the power state to the whole vehicle in real time, so that the power system achieves the aims of digital and intelligent control.
Drawings
Fig. 1 is an electrical schematic of the present invention.
Detailed Description
The invention designs a lithium titanate storage battery charge-discharge control system for starting a special vehicle, which consists of a charging loop relay 1, a discharging loop relay 2, a battery management system 3, a lithium titanate battery pack 4 for starting, a vehicle-mounted generator 5, a key switch 6, a starter 7, a lithium titanate storage battery positive electrode 8 for starting, a lithium titanate storage battery negative electrode 9 for starting, an external charging power supply 10 and related connecting harnesses.
The circuit connection relation of the lithium titanate storage battery charge-discharge control system for starting the special vehicle is as follows:
1) Charging control circuit: the external charging power supply 10 and the vehicle-mounted generator 5 are connected with a starting lithium titanate storage battery positive electrode 8 and a starting lithium titanate storage battery negative electrode 9, the starting lithium titanate storage battery positive electrode 8 is connected with the charging loop relay 1, the charging loop relay 1 is connected with the battery management system 3 and the starting lithium titanate battery pack 4, and the starting lithium titanate storage battery negative electrode 9 is connected with the starting lithium titanate battery pack 4;
2) Discharge control loop: the positive electrode of the lithium titanate battery pack 4 for starting is connected with the discharging loop relay 2 and the key switch 6, the discharging loop relay 2 is connected with the battery management system 3 and controlled by the discharging loop relay, the negative electrode 9 of the lithium titanate storage battery for starting is connected with the negative electrode of the lithium titanate battery pack 4 for starting, and the negative electrode 9 of the lithium titanate storage battery for starting, the discharging loop relay 2 and the key switch 6 are all connected with the starter 7, so that the control discharging of the starter 7 is realized.
The working principle of the lithium titanate storage battery charging and discharging control system for starting the special vehicle is described as follows:
1) And (3) a charging control process: as shown in fig. 1, when the external charging power source 10 for the starting lithium titanate battery or the in-vehicle generator 5 starts to supply power, the battery management system 3 detects the terminal voltages of the positive electrode 8 for the starting lithium titanate battery and the negative electrode 9 for the starting lithium titanate battery to determine whether charging is necessary, and when the battery terminal voltage is lower than 13V, the battery management system 3 controls the charging circuit relay 1 to be closed to charge the starting lithium titanate battery pack 4. If the battery terminal voltage is higher than 13V, the battery management system 3 will not control the charging circuit relay 1 to be closed according to the judgment, so the charging system will not charge the starting lithium titanate battery pack 4.
2) And (3) a discharge control process: as shown in fig. 1, when a special vehicle needs to be started, the manual control key switch 6 is closed, and when the battery management system 3 detects the useful electricity demand of the whole vehicle, the discharge loop relay 2 is controlled to be closed, at the moment, the starter 7 obtains the current from the lithium titanate battery pack 4 for starting through the discharge loop relay 2, and the vehicle is started after the starter 7 is electrified. Thus completing the control of the discharge process.
The invention uses the lithium titanate storage battery for starting for special vehicles for the first time, and the lithium titanate storage battery is always used in the field of power supply before, and has the following beneficial effects:
1. the lithium titanate storage battery for starting the special vehicle is provided with a battery management system, so that the functions of information management, charge control, discharge control and the like in the battery can be realized;
2. the lithium titanate storage battery charging and discharging control system for starting the special vehicle realizes overcharge protection and overdischarge protection of a power supply by being provided with a power supply management system, and realizes effective protection of the battery;
3. the lithium titanate storage battery charge-discharge control system for starting the special vehicle realizes the maximum overcurrent capacity of 1200A by matching a high-power overcurrent relay in a discharge loop, and can effectively realize the quick starting of the special vehicle in a low-temperature environment by matching the characteristic that the lithium titanate battery is not affected by low temperature.
Claims (1)
1. A lithium titanate storage battery charge-discharge control system for starting a special vehicle is characterized in that: the system comprises a charging loop relay (1), a discharging loop relay (2), a battery management system (3), a lithium titanate battery pack (4) for starting, a vehicle-mounted generator (5), a key switch (6), a starter (7), a lithium titanate storage battery anode (8) for starting, a lithium titanate storage battery cathode (9) for starting, an external charging power supply (10) and related connecting wire harnesses;
charging control circuit: the external charging power supply (10) and the vehicle-mounted generator (5) are connected with a starting lithium titanate storage battery anode (8) and a starting lithium titanate storage battery cathode (9), the starting lithium titanate storage battery anode (8) is connected with the charging loop relay (1), the charging loop relay (1) is connected with the battery management system (3) and the starting lithium titanate battery pack (4), and the starting lithium titanate storage battery cathode (9) is connected with the starting lithium titanate battery pack (4);
discharge control loop: the positive electrode of the lithium titanate battery pack (4) for starting is connected with the discharging loop relay (2) and the key switch (6), the discharging loop relay (2) is connected with the battery management system (3) and is controlled by the battery management system, the negative electrode (9) of the lithium titanate storage battery for starting is connected with the negative electrode of the lithium titanate battery pack (4) for starting, and the negative electrode (9) of the lithium titanate storage battery for starting, the discharging loop relay (2) and the key switch (6) are all connected with the starter (7) to realize the control discharging of the starter (7);
and (3) a charging control process: when the external charging power supply (10) of the lithium titanate storage battery for starting or the vehicle-mounted generator (5) starts to supply power, the battery management system (3) detects the terminal voltage of the positive electrode (8) of the lithium titanate storage battery for starting and the terminal voltage of the negative electrode (9) of the lithium titanate storage battery for starting to judge whether charging is needed, and if the battery terminal voltage is lower than 13V, the battery management system (3) controls the charging loop relay (1) to be closed so as to charge the lithium titanate storage battery pack (4) for starting. If the voltage of the battery terminal is higher than 13V, the battery management system (3) will not control the charging loop relay (1) to be closed according to the judgment, so that the charging system will not charge the starting lithium titanate battery pack (4);
and (3) a discharge control process: when a special vehicle needs to be started, a manual control key switch (6) is closed, a battery management system (3) controls a discharging loop relay (2) to be closed when detecting the useful electricity demand of the whole vehicle, at the moment, a starter (7) obtains current from a lithium titanate battery pack (4) for starting through the discharging loop relay (2), and the vehicle can be started after the starter (7) is electrified, so that the control of a discharging process is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311563795.2A CN117622030A (en) | 2023-11-21 | 2023-11-21 | Lithium titanate storage battery charge-discharge control system for starting special vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311563795.2A CN117622030A (en) | 2023-11-21 | 2023-11-21 | Lithium titanate storage battery charge-discharge control system for starting special vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117622030A true CN117622030A (en) | 2024-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311563795.2A Pending CN117622030A (en) | 2023-11-21 | 2023-11-21 | Lithium titanate storage battery charge-discharge control system for starting special vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117622030A (en) |
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2023
- 2023-11-21 CN CN202311563795.2A patent/CN117622030A/en active Pending
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