CN219436694U - Lithium battery and super capacitor hybrid starting battery - Google Patents
Lithium battery and super capacitor hybrid starting battery Download PDFInfo
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- CN219436694U CN219436694U CN202320773425.0U CN202320773425U CN219436694U CN 219436694 U CN219436694 U CN 219436694U CN 202320773425 U CN202320773425 U CN 202320773425U CN 219436694 U CN219436694 U CN 219436694U
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Abstract
The utility model discloses a lithium battery and super capacitor hybrid starting battery, which relates to the technical field of electric automobiles and comprises a lithium battery, a DCDC converter, a super capacitor and an integrated control board; the DCDC converter is electrically connected with the lithium battery and the super capacitor; the integrated control board is electrically connected to the lithium battery, the DCDC converter and the super capacitor, and the integrated control board controls the DCDC converter to perform voltage boosting or voltage reducing control by collecting state parameters of the lithium battery and the super capacitor, so that the working states of the lithium battery and the super capacitor are controlled. The utility model combines the application of the DCDC converter and the super capacitor on the basis of the lithium battery, thereby forming a set of mixed starting battery, realizing the technical effects of higher charge and discharge multiplying power and longer service life, ensuring that the starting battery does not need to be replaced during the service life of the automobile, saving the maintenance cost of a user and the environmental burden of the later period, and overcoming the defects of the existing lead-acid storage battery as the starting battery.
Description
Technical Field
The utility model relates to the technical field of electric automobiles, in particular to a lithium battery and super capacitor hybrid starting battery.
Background
Starting a battery is the most important and critical component of an electric vehicle's engine block. The lead-acid storage battery has mature technology, stable performance and low cost, so the lead-acid storage battery is always used as a starting battery. However, lead-acid batteries have lead pollution environmental protection problems, and when a vehicle engine unit is started, the starting peak current needs hundreds of amperes, even thousands of amperes, so that the high-rate discharge seriously reduces the service life of the battery. Before the service life of the automobile is reached, the lead-acid battery needs to be replaced for many times, so that resources are wasted, meanwhile, the economic cost is greatly increased, and the environmental burden is further increased.
In addition, lead-acid batteries have the problem of poor low-temperature starting performance, and in winter at low temperature, lead-acid batteries often cannot be started smoothly, and even vehicles cannot be started, so that the starting reliability is affected.
Disclosure of Invention
The utility model provides a lithium battery and super capacitor hybrid starting battery, which mainly aims to solve the problems in the prior art.
The utility model adopts the following technical scheme:
a lithium battery and super capacitor hybrid starting battery comprises a lithium battery, a DCDC converter, a super capacitor and an integrated control board; the DCDC converter is electrically connected with the lithium battery and the super capacitor; the integrated control board is electrically connected to the lithium battery, the DCDC converter and the super capacitor, and the integrated control board controls the DCDC converter to perform voltage boosting or voltage reducing control by collecting state parameters of the lithium battery and the super capacitor, so that the working states of the lithium battery and the super capacitor are controlled.
Further, the system also comprises a communication module; the communication module comprises a CAN communication module and a wireless communication module, and the integrated control board is connected to the whole vehicle CAN bus through the CAN communication module and is connected to the mobile terminal through the wireless communication module. Specifically, the mobile terminal is a mobile phone, a computer or debugging equipment.
Further, the lithium battery comprises a plurality of battery core monomers; the integrated control board is provided with a battery cell voltage acquisition end, a battery cell temperature acquisition end and a battery cell current acquisition end which are connected with the lithium battery. The lithium battery is externally provided with a heating film, and the integrated control board is also provided with a battery heating control signal output end connected with the heating film.
Further, the integrated control board is provided with a capacitor voltage acquisition end, a capacitor temperature acquisition end and a capacitor current acquisition end which are connected with the super capacitor. A relay K is arranged between the DCDC converter and the super capacitor 1 The integrated control board is also provided with a relay K 1 And a control signal output terminal.
Further, the integrated control board is provided with a DCDC signal acquisition end, a boosting control signal output end and a step-down control signal output end which are connected with the DCDC converter.
Further, the integrated control board is provided with a whole vehicle low-voltage electric signal acquisition end, a BCM wake-up signal acquisition end, a VCU wake-up signal acquisition end and a whole vehicle low-voltage power generation signal acquisition end.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model combines the application of the DCDC converter and the super capacitor on the basis of the lithium battery, thereby forming a set of mixed starting battery, realizing the technical effects of higher charge and discharge multiplying power and longer service life, ensuring that the starting battery does not need to be replaced during the service life of the automobile, saving the maintenance cost of a user and the environmental burden of the later period, and overcoming the defects of the existing lead-acid storage battery as the starting battery.
Drawings
Fig. 1 is a functional block diagram of the present utility model.
Fig. 2 is a schematic circuit structure of the integrated control board according to the present utility model.
Fig. 3 is a schematic diagram of the integrated control board, DCDC converter and supercapacitor of the present utility model.
Fig. 4 is a control flow chart of the present utility model.
In the figure: 1. a lithium battery; 11. heating the film; 2. a DCDC converter; 3. a super capacitor; 4. an integrated control board; 5. a communication module; 51. a CAN communication module; 52. and a wireless communication module.
Detailed Description
Specific embodiments of the present utility model will be described below with reference to the accompanying drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present utility model, but it will be apparent to one skilled in the art that the present utility model may be practiced without these details.
As shown in fig. 1 to 3, a lithium battery and super capacitor hybrid starting battery comprises a lithium battery 1, a DCDC converter 2, a super capacitor 3 and an integrated control board 4; the DCDC converter 2 is electrically connected with the lithium battery 1 and the super capacitor 3; the integrated control board 4 is electrically connected with the lithium battery 1, the DCDC converter 2 and the super capacitor 3 and is connected with the electric equipment of the whole vehicle; the integrated control board 4 is used for controlling the DCDC converter 2 to carry out step-up or step-down control by collecting state parameters of the lithium battery 1 and the super capacitor 3, and further controlling working states of the lithium battery 1 and the super capacitor 3, so that the lithium battery 1 or the super capacitor 3 supplies power for the whole electric equipment through the DCDC converter 2.
As shown in fig. 1 and 2, the starting battery further includes a communication module 5, and the communication module 5 includes a CAN communication module 51 and a wireless communication module 52. Specifically, the integrated control board 4 is connected to the whole car CAN bus through the CAN communication module 51, so as to collect the whole car signal, and send relevant information of itself, such as the voltage, temperature, working current, fault information real-time alarm and the like of the lithium battery 1 through the CAN bus in real time, so that a driver CAN grasp the state information of the starting battery at any time through an instrument desk or a mobile terminal. The integrated control board 4 is connected to the mobile terminal through the wireless communication module 52, and a driver can monitor the working state of the starting battery in real time through the mobile terminal. The wireless communication module 52 may be a bluetooth module or a WIFI module, and the mobile terminal may be a mobile phone, a computer or a debugging device of the driver.
As shown in fig. 1 to 3, the lithium battery 1 comprises a plurality of battery cells, a single battery cell scheme is adopted, battery equalization is not needed, a battery management system only needs to collect voltage and temperature of the battery cells, and the system structure is simplified. If the capacity of the battery needs to be increased, the battery cells are connected in parallel. The specific connection mode of the integrated control board 4 and the lithium battery is as follows: the integrated control board 4 is provided with a battery cell voltage acquisition end, a battery cell temperature acquisition end and a battery cell current acquisition end which are connected with the lithium battery 1. The specific connection mode of the integrated control board 4 and the super capacitor 3 is as follows: the integrated control board 4 is provided with a capacitor voltage acquisition end, a capacitor temperature acquisition end and a capacitor current acquisition end which are connected with the super capacitor 3. Preferably, the temperature collection modes of the lithium battery 1 and the super capacitor 3 are as follows: the temperature sensing resistors are arranged at the electrodes of the lithium battery 1 and the super capacitor 3 respectively, two temperature acquisition modules are arranged on the integrated control board 4 and are connected with the temperature sensing resistors through wire harnesses, and the temperature is judged by detecting the resistance.
As shown in fig. 1 and 2, the lithium battery 1 is externally provided with a heating film 11, and the integrated control board 4 is provided with a battery heating control signal output terminal connected to the heating film 11. The integrated control board 4 judges whether to control the heating film 11 to heat the lithium battery according to the collected battery core temperature, so that the problem that the discharge multiplying power of the lithium battery is small in extremely cold weather can be solved.
As shown in fig. 1 to 3, the integrated control board 4 and the DCDC converter 2 are specifically connected in the following manner: the integrated control board 4 is provided with a DCDC signal acquisition end, a boost control signal output end and a buck control signal output end which are connected to the DCDC converter 2. In addition, the integrated control board 4 is further connected to the DCDC converter 2 through the CAN communication module 51 in a communication manner, so as to collect signals of the DCDC converter 2 in time or send control instructions to the DCDC converter 2, thereby playing a role in safety redundancy design.
As shown in fig. 3, a relay K is arranged between the DCDC converter 2 and the super capacitor 3 1 The integrated control board 4 is provided with a relay K 1 Control signal output end through which relay K can be controlled rapidly 1 Thereby controlling the disconnection of the super capacitor 3 loop.
As shown in fig. 1 and 2, the integrated control board 4 is further provided with an electric signal acquisition end, a BCM wake-up signal acquisition end and a VCU wake-up signal acquisition end under low voltage of the whole vehicle. Specifically, the electric signal acquisition end under the low pressure of the whole vehicle is used for acquiring information of the key OFF gear; the BCM wake-up signal acquisition end is connected with the vehicle body controller and is used for acquiring a remote control unlocking signal; the VCU wake-up signal acquisition end is connected to the whole vehicle controller and used for detecting whether the whole vehicle controller receives operation signals of vehicle moving, vehicle preheating and the like sent by a driver through the mobile terminal. The DCDC controller can be started in advance through the signal acquisition, and the super capacitor 3 is charged, so that a user can conveniently and quickly start the vehicle. Because if the super capacitor 3 is deficient, it takes some time to charge, which delays the vehicle start-up time.
As shown in fig. 1 and 2, the integrated control board 4 is further provided with a low-voltage power generation signal acquisition end of the whole vehicle. The whole vehicle low-voltage power generation signal acquisition end refers to a circuit for supplying power to the whole vehicle at low voltage, and can be particularly a DCDC module for converting high voltage of an electric vehicle into low voltage or a generator of a fuel vehicle. When the integrated control board 4 detects that the whole vehicle low-voltage power generation normally works, the DCDC converter 2 and the lithium battery 1 are controlled to stop working, so that the use frequency of the lithium battery 1 can be reduced, and the service life of the lithium battery 1 is prolonged.
Fig. 4 is a schematic diagram of a specific workflow of the starting battery according to the present embodiment, and the working principle thereof may be briefly summarized as follows:
1. when the integrated control board 4 detects that the vehicle receives signals of remote awakening such as unlocking of a vehicle door, heating of a seat and the like or the vehicle has a starting intention, the DCDC converter 2 performs boost control in advance, and the super capacitor 3 is charged through the lithium battery 1, so that the vehicle is started quickly. The super capacitor 3 can be arranged on the instrument to charge the completion indicator lamp so as to remind a driver of starting the vehicle.
2. After the vehicle starts, the lithium battery 1 is charged to a set voltage and enters a sleep state, thereby preventing the lithium battery 1 from being excessively used, and at this time, the super capacitor 3 absorbs or provides an instantaneous large current.
3. When the integrated control board 4 detects that the single voltage of the lithium battery 1 is lower than the set value, the system of the lithium battery 1 is controlled to enter a shutdown state, and when the system is started next time, a driver presses a start button to execute forced start, so that the normal start of the vehicle is ensured.
Under the condition that the starting battery collects different trigger signals, the working states of all the components are shown in the following table:
on the whole, the utility model combines the application of the DCDC converter 2 and the super capacitor 3 on the basis of the lithium battery 1, thereby forming a set of mixed starting battery, realizing the technical effects of higher charge and discharge multiplying power and longer service life, ensuring that the starting battery does not need to be replaced during the service life of the automobile, saving the maintenance cost of a user and the environmental burden of the later period, and overcoming the defects of the existing lead-acid storage battery as the starting battery.
The foregoing is merely illustrative of specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the present utility model by using the design concept shall fall within the scope of the present utility model.
Claims (10)
1. A lithium battery and super capacitor hybrid starting battery is characterized in that: the lithium battery, the DCDC converter, the super capacitor and the integrated control board are included; the DCDC converter is electrically connected with the lithium battery and the super capacitor; the integrated control board is electrically connected to the lithium battery, the DCDC converter and the super capacitor, and the integrated control board controls the DCDC converter to perform voltage boosting or voltage reducing control by collecting state parameters of the lithium battery and the super capacitor, so that the working states of the lithium battery and the super capacitor are controlled.
2. The lithium battery and super capacitor hybrid starting battery of claim 1, wherein: the system also comprises a communication module; the communication module comprises a CAN communication module, and the integrated control board is connected to the whole vehicle CAN bus through the CAN communication module.
3. The lithium battery and super capacitor hybrid starting battery of claim 2, wherein: the communication module further comprises a wireless communication module, and the integrated control board is connected to the mobile terminal through the wireless communication module.
4. A lithium battery and super capacitor hybrid starter battery as claimed in claim 3, wherein: the mobile terminal is a mobile phone, a computer or debugging equipment.
5. The lithium battery and super capacitor hybrid starting battery of claim 1, wherein: the lithium battery comprises a plurality of battery core monomers; the integrated control board is provided with a battery cell voltage acquisition end, a battery cell temperature acquisition end and a battery cell current acquisition end which are connected with the lithium battery.
6. The lithium battery and super capacitor hybrid starting battery of claim 1, wherein: the integrated control board is provided with a capacitor voltage acquisition end, a capacitor temperature acquisition end and a capacitor current acquisition end which are connected with the super capacitor.
7. The lithium battery and super capacitor hybrid starting battery of claim 1, wherein: the lithium battery is externally provided with a heating film, and the integrated control board is provided with a battery heating control signal output end connected with the heating film.
8. The lithium battery and super capacitor hybrid starting battery of claim 1, wherein: the integrated control board is provided with a DCDC signal acquisition end, a boosting control signal output end and a step-down control signal output end which are connected with the DCDC converter.
9. The lithium battery and super capacitor hybrid starting battery of claim 1, wherein: a relay K is arranged between the DCDC converter and the super capacitor 1 The integrated control board is provided with a relay K 1 And a control signal output terminal.
10. The lithium battery and super capacitor hybrid starting battery of claim 1, wherein: the integrated control board is provided with an electric signal acquisition end under the low voltage of the whole vehicle, a BCM wake-up signal acquisition end, a VCU wake-up signal acquisition end and a power generation signal acquisition end under the low voltage of the whole vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320773425.0U CN219436694U (en) | 2023-04-10 | 2023-04-10 | Lithium battery and super capacitor hybrid starting battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320773425.0U CN219436694U (en) | 2023-04-10 | 2023-04-10 | Lithium battery and super capacitor hybrid starting battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219436694U true CN219436694U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320773425.0U Active CN219436694U (en) | 2023-04-10 | 2023-04-10 | Lithium battery and super capacitor hybrid starting battery |
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| Country | Link |
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| CN (1) | CN219436694U (en) |
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2023
- 2023-04-10 CN CN202320773425.0U patent/CN219436694U/en active Active
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