CN214355887U - Composite lithium battery system for vehicle - Google Patents
Composite lithium battery system for vehicle Download PDFInfo
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- CN214355887U CN214355887U CN202120409747.8U CN202120409747U CN214355887U CN 214355887 U CN214355887 U CN 214355887U CN 202120409747 U CN202120409747 U CN 202120409747U CN 214355887 U CN214355887 U CN 214355887U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a composite lithium battery system for vehicles, which comprises a lithium battery module, a battery management module, a battery control module, a super capacitor module, a connecting module and a whole vehicle electrical appliance module; the positive electrode of the lithium battery module is connected with one end of the connecting module; one path of the negative electrode of the lithium battery module is connected with one end of the super capacitor module, and the second path of the negative electrode of the lithium battery module is connected with one end of the whole vehicle electrical appliance module; the lithium battery module is also connected with the battery management module; the output end of the battery management module is connected with the input end of the battery control module, and the enabling end of the battery management module is connected with the second end of the super capacitor module; the first output end of the battery control module is connected with the second end of the connecting module, and the system further comprises a heating module and a super capacitor module. The utility model discloses a lithium battery module lithium electricity cycle life is long, including control system's management, guarantees that whole car life cycle in battery function is normal, and the low temperature starting difficulty has been solved to the super capacitor module, eliminates short-lived, the heavy and pollution problem of lead acid battery.
Description
Technical Field
The utility model belongs to the technical field of the car battery energy, in particular to automobile-used compound lithium battery system.
Background
At present, the method of replacing a lead-acid battery with a lithium battery as a vehicle starting power supply is gradually researched in the field of automobiles by utilizing the advantages of high energy density and long cycle life of the lithium battery.
The lithium battery is used as a starting power supply, is different from the use working condition of a power battery, has different characteristics from a lead-acid battery, has low discharge rate at low temperature, cannot meet the low-temperature starting of high-power engines such as trucks and the like only depending on the lithium battery, and also has the problems of incapability of charging at low temperature and the like. Therefore, a new solution is needed to achieve better management and protection of the lithium battery while satisfying the start-up function.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an automobile-used compound lithium battery system adopts lithium battery system to replace lead acid battery, guarantees that the battery system function is normal in the vehicle life cycle.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a composite lithium battery system for a vehicle comprises a lithium battery module, a battery management module, a battery control module, a super capacitor module, a connecting module and a vehicle electrical appliance module;
the positive electrode of the lithium battery module is connected with one end of the connecting module; one path of the negative electrode of the lithium battery module is connected with one end of the super capacitor module, and the second path of the negative electrode of the lithium battery module is connected with one end of the whole vehicle electrical appliance module; the lithium battery module is also connected with the battery management module;
the output end of the battery management module is connected with the input end of the battery control module, and the enabling end of the battery management module is connected with the second end of the super capacitor module; and the first output end of the battery control module is connected with the second end of the connecting module.
Further, the battery system further comprises a heating module;
the enabling end of the heating module is connected with the second output end of the battery control module; the output end of the heating module is connected with the negative electrode of the lithium battery module; the input end of the heating module is connected with the third end of the super capacitor module, the third end of the connecting module and the other end of the whole vehicle electrical appliance module.
Further, the battery system further comprises an instrument module;
the instrument module is connected with the battery control module.
Furthermore, the whole vehicle electrical appliance module comprises a starter, a generator and a whole vehicle load;
the starter, the generator and the load of the whole vehicle are connected in parallel.
Further, the heating module is arranged on the periphery of the lithium battery module.
Furthermore, the connecting module is an electrical device for controlling on-off.
Furthermore, the super capacitor module comprises a plurality of super capacitor monomers connected in parallel.
Furthermore, the lithium battery module comprises a plurality of lithium battery single bodies connected in parallel.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the utility model provides a composite lithium battery system for vehicles, which comprises a lithium battery module, a battery management module, a battery control module, a super capacitor module, a connecting module and a whole vehicle electrical appliance module; the positive electrode of the lithium battery module is connected with one end of the connecting module; one path of the negative electrode of the lithium battery module is connected with one end of the super capacitor module, and the second path of the negative electrode of the lithium battery module is connected with one end of the whole vehicle electrical appliance module; the lithium battery module is also connected with the battery management module; the output end of the battery management module is connected with the input end of the battery control module, and the enabling end of the battery management module is connected with the second end of the super capacitor module; and the first output end of the battery control module is connected with the second end of the connecting module. The battery management module is connected with the battery control module, can realize instruction information interaction between the battery control module and the super capacitor module, and is connected with the lithium battery module, so that the super capacitor module and the lithium battery module can be subjected to state acquisition such as voltage and temperature, and management such as equalization can be performed. The battery control module is also connected with the connecting module, and the control of the connecting module is realized through instruction information interaction. The battery system also comprises a heating module, and the heating module is also controlled by the battery control module. The utility model discloses a lithium battery module lithium electricity cycle life is long, in addition control system's management and protection, can guarantee that whole car life cycle battery function is normal, solves the problem similar to traditional lead acid battery change many times; the control system knows the power demand of a user and the starting condition of the generator through signals such as a key and the running state of an engine, better realizes the charge and discharge management of the lithium battery and further protects the lithium battery; under control system's management, can utilize heating module to realize carrying out temperature management to lithium battery module, guarantee all the time that lithium battery module has good activity, further prolong its life.
The composite lithium battery composed of the lithium battery module and the super capacitor module can solve the problem that a single lithium battery module cannot be started at low temperature under the management of a control system, and ensures the normal starting of a vehicle under any working condition;
the lithium battery has high energy density, and although the super capacitor module is additionally arranged, the whole weight is lighter than that of the lead-acid battery, so that the light-weight design of the whole vehicle is facilitated, and the pollution problem of the lead-acid battery is eliminated.
In the using process, the instrument displays information such as the voltage and the electric quantity of the battery, and breaks through a mode that the traditional lead-acid battery is inaccurate in state or only depends on the voltage to calculate the electric quantity, so that a user can clearly master the state of the battery, the user can better plan and manage the power consumption under the condition of ensuring the next starting, and the anxiety caused by the inaccurate state of the lead-acid battery is eliminated; simultaneously in time carry out trouble and remind to show the trouble code, be convenient for in time carry out the troubleshooting, it is more intelligent, promote whole car and drive impression and drive the quality.
Drawings
As shown in fig. 1, the embodiment 1 of the present invention is a connection schematic diagram of an automotive composite lithium battery system.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily limit the invention.
Example 1
The embodiment 1 of the utility model provides a vehicle composite lithium battery system, utilize the advantage that lithium cell energy density is high, cycle life is long, select the lithium cell scheme, solve the problem that lead-acid battery weight is big and lead-acid battery life is short, plus control system guarantees that the battery system function is normal in the vehicle life cycle, and solve the lead-acid battery pollution problem; by utilizing the characteristic that the super capacitor still can discharge at high power at low temperature, the composite lithium battery is formed by the lithium battery module and the super capacitor module, the external control system controls the discharge of the management of different combinations of the lithium battery module and the super capacitor module, the problem that only the lithium battery is difficult to start under the low-temperature condition is solved, and the starting of the vehicle under any condition is met.
As shown in fig. 1, a composite lithium battery system for a vehicle according to embodiment 1 of the present invention includes a lithium battery module, a battery management module, a battery control module, a super capacitor module, a connection module, and a vehicle electrical module;
the positive electrode of the lithium battery module is connected with one end of the connecting module; one path of the negative electrode of the lithium battery module is connected with one end of the super capacitor module, and the second path of the negative electrode of the lithium battery module is connected with one end of the whole vehicle electrical appliance module; the lithium battery module is also connected with the battery management module; the output end of the battery management module is connected with the input end of the battery control module, and the enabling end of the battery management module is connected with the second end of the super capacitor module; and the first output end of the battery control module is connected with the second end of the connecting module.
The battery system also includes a meter.
The utility model discloses well whole car key signal, parking air conditioner start signal, engine start signal all are connected to battery control module, and battery control module allows the start signal for whole car feedback, passes through the low pressure with instrument, battery management module, linking module, heating module simultaneously and links to each other, can realize that information, instruction are mutual.
The super capacitor module is formed by connecting a plurality of super capacitor monomers in series and parallel, and the lithium battery module is formed by connecting a plurality of lithium battery monomers in series and parallel.
The states of the lithium battery module and the super capacitor module are collected by the battery management module and reported to the battery control module.
The super capacitor module is connected with the lithium battery module through the connecting module, the connecting module is controlled by the battery control module, the lithium battery module can be used for charging the super capacitor module, and the super capacitor module and the lithium battery module can be directly switched on or switched off.
The battery control module is awakened by a whole vehicle key signal or a parking air conditioner starting signal, then the battery control module controls the battery management module to work, and the connection module and the heating module are controlled to work in due time according to the whole vehicle requirement.
The battery management module is connected in super capacitor module, lithium cell module through the low pressure collection pencil, gathers the monomer voltage, temperature, the current information of lithium cell module, gathers super capacitor module's temperature, monomer voltage information simultaneously, carries out management such as equilibrium to lithium electricity monomer and super capacitor monomer to send the various state information of lithium cell module and super capacitor module for battery control module.
Connecting module one end links to each other with super capacitor module is anodal, and one end links to each other with lithium cell module is anodal, is controlled by battery control module, can realize directly linking between super capacitor module and the lithium cell module and switch on or break off, also can guarantee not switching on between lithium cell and the super capacitor module, but can charge for super capacitor module with the electric energy of lithium cell module.
The heating module is attached to the periphery of the lithium battery and is responsible for heating the lithium battery. The heating module also has instruction information interaction with the battery control module, and under the default condition, the heating module is in a non-working state, if the heating work instruction of the battery control module is received under the low temperature condition, the lithium battery module starts to be heated, and when the heating work instruction is sent by the battery control module and stops heating, the heating module stops working.
After the battery control module is awakened by a key signal or a parking air conditioner signal, battery information reported by the battery management module is received, electric quantity calculation, fault identification and fault processing are carried out according to voltage, electric quantity, current and temperature information of the battery, the connection module and the heating module are controlled, charging and discharging management of the super capacitor module and the lithium battery module is achieved, starting of the vehicle under any condition is guaranteed, meanwhile, the problems of overcharge of the lithium battery under low temperature and the like are avoided, and protection of the battery is better achieved.
After the key is turned on, if the battery control module detects that the battery has no fault, the temperature is higher than K1 and the battery electric quantity is higher than Ksoc, the battery control module controls the connection module, firstly, the lithium battery module is used for charging the super capacitor module, and when the voltage platforms of the super capacitor module and the super capacitor module are smaller than a certain threshold value, the battery control module controls the connection module to realize that the super capacitor module and the lithium battery module are directly connected in parallel and conducted, and a starting permission signal is sent to the whole vehicle to realize that the lithium battery module and the super capacitor module are jointly supported and started; after the engine is judged to be started by detecting the running state of the engine, the control connection module keeps the state unchanged, and the generator charges the super capacitor module and the lithium battery module.
If the battery is detected to be free of faults, the temperature is higher than K1, and the battery electric quantity is lower than Ksoc, the battery control module controls the connection module to charge the super capacitor module by using the lithium battery module, and when the electric quantity of the super capacitor module is higher than Kcap, a start permission signal is sent to the whole vehicle, and the super capacitor module is supported and started independently at the moment; after the engine is judged to be started by detecting the running state of the engine, the battery control module controls the connecting module to realize direct parallel connection and conduction of the super capacitor module and the lithium battery module, and the generator charges the super capacitor module and the lithium battery module.
If no fault exists and the temperature is lower than K1, the battery control module controls the connection module to firstly utilize the lithium battery module to charge the super capacitor module, and when the electric quantity of the super capacitor module is higher than Kcap, a starting permission signal is sent to the whole vehicle, and the super capacitor module is singly supported to start; judge the engine through detecting engine running state and start the back, then control connection module realizes that super capacitor module and lithium cell module continue to keep the disconnection, and control heating module heats for the lithium cell module simultaneously, treats that the temperature is greater than a definite value, then the heating of stopping, and control connection module realizes that super capacitor module and lithium cell module directly switch on simultaneously, and the generator charges for super capacitor module and lithium cell module, avoids directly charging harm such as overcharge that produces for the lithium cell group at the low temperature.
After battery control module parking air conditioner signal awakens up, then control connection module, utilize the lithium cell module earlier to charge for super capacitor module, support electrical apparatus such as parking air conditioner simultaneously, treat that both voltage platforms are less than certain threshold value, control connection module realizes that super capacitor module and lithium cell module are direct parallelly connected to be switched on, be electrical apparatus such as parking air conditioner power supply together, battery electric quantity is less than certain threshold value, then control the parking air conditioner and carry out the shut down processing, guarantee next vehicle start power consumption.
The battery control module calculates the electric quantity of the battery, identifies faults and processes the faults according to the information uploaded by the battery management module, simultaneously sends voltage, electric quantity, fault prompt and fault codes to the instrument, the instrument displays the states, the states can be conveniently checked by a driver, the driver can clearly master the battery states, the working time of a parking air conditioner can be set according to the electric quantity and the voltage of the battery, electric equipment such as an electric cooker and the like can be reasonably used, and the next whole vehicle can be started; when breaking down simultaneously, the instrument can be reported an alert and suggested, in time inform the driver to troubleshoot and overhaul, with the fault code, be convenient for tentatively judge the trouble reason, make the customer use more intelligent, it is more convenient.
The utility model discloses well battery control module contains the special purpose integrated circuit of main control unit MPC5744 chip, digital signal processing unit, low limit drive, high limit drive, communication interface etc. constitution.
The battery management module also adopts an s32 main chip and comprises an integrated circuit board consisting of analog quantity acquisition, digital quantity input and output, external communication and the like.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto. Various modifications and alterations will occur to those skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. On the basis of the technical scheme of the utility model, various modifications or deformations that technical personnel in the field need not pay out creative work and can make still are within the protection scope of the utility model.
Claims (8)
1. A composite lithium battery system for a vehicle is characterized by comprising a lithium battery module, a battery management module, a battery control module, a super capacitor module, a connecting module and a vehicle electrical appliance module;
the positive electrode of the lithium battery module is connected with one end of the connecting module; one path of the negative electrode of the lithium battery module is connected with one end of the super capacitor module, and the second path of the negative electrode of the lithium battery module is connected with one end of the whole vehicle electrical appliance module; the lithium battery module is also connected with the battery management module;
the output end of the battery management module is connected with the input end of the battery control module, and the enabling end of the battery management module is connected with the second end of the super capacitor module; and the first output end of the battery control module is connected with the second end of the connecting module.
2. The composite lithium battery system for vehicles according to claim 1, wherein the battery system further comprises a heating module;
the enabling end of the heating module is connected with the second output end of the battery control module; the output end of the heating module is connected with the negative electrode of the lithium battery module; the input end of the heating module is connected with the third end of the super capacitor module, the third end of the connecting module and the other end of the whole vehicle electrical appliance module.
3. The composite lithium battery system for vehicles according to claim 2, wherein the battery system further comprises an instrument module;
the instrument module is connected with the battery control module.
4. The composite lithium battery system for the vehicle of claim 1, wherein the vehicle electrical module comprises a starter, a generator and a vehicle load;
the starter, the generator and the load of the whole vehicle are connected in parallel.
5. The composite lithium battery system for the vehicle as claimed in claim 2, wherein the heating module is disposed at the periphery of the lithium battery module.
6. The composite lithium battery system for vehicles according to claim 1, wherein the connection module is an electrical device for controlling on/off.
7. The composite lithium battery system for vehicles of claim 1, wherein the supercapacitor module comprises a plurality of supercapacitor cells connected in parallel.
8. The composite lithium battery system for vehicles as claimed in claim 1, wherein the lithium battery module comprises a plurality of lithium battery cells connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120409747.8U CN214355887U (en) | 2021-02-24 | 2021-02-24 | Composite lithium battery system for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120409747.8U CN214355887U (en) | 2021-02-24 | 2021-02-24 | Composite lithium battery system for vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN214355887U true CN214355887U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120409747.8U Active CN214355887U (en) | 2021-02-24 | 2021-02-24 | Composite lithium battery system for vehicle |
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| CN (1) | CN214355887U (en) |
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2021
- 2021-02-24 CN CN202120409747.8U patent/CN214355887U/en active Active
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