CN205283196U - Battery management system's clock supply circuit - Google Patents
Battery management system's clock supply circuit Download PDFInfo
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- CN205283196U CN205283196U CN201521118435.2U CN201521118435U CN205283196U CN 205283196 U CN205283196 U CN 205283196U CN 201521118435 U CN201521118435 U CN 201521118435U CN 205283196 U CN205283196 U CN 205283196U
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- module
- clock
- voltage reduction
- management system
- battery management
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Abstract
The utility model relates to a battery management system's clock supply circuit, include: a voltage reducing module, the 2nd voltage reducing module and built -in chargeable lithium ion battery's clock module, a voltage reducing module and the 2nd voltage reducing module's input is connected with external power supply respectively, a voltage reducing module's output is connected with the input of clock module respectively with the 2nd voltage reducing module's output, the control center that a voltage reducing module's control end passes through switch K1 and battery management system is connected, the battery management system during operation, and switch K1 is closed, and a voltage reducing module be battery management system simultaneously and supplies power with the clock module, and the 2nd voltage reducing module also supplies power for the clock module, during the lower electricity of battery management system, the disconnection of switch K1, a voltage reducing module no -output, the 2nd voltage reducing module supplies power for the clock alone. Ensure at any time all have external power supply to supply power for the clock module, and then ensure the clock module and normally work.
Description
Technical field
This utility model relates to battery management system power supply technique field, is specifically related to the power supply circuit of clock of battery management system.
Background technology
Much countries of the current world are all promoting new-energy automobile. China is under the promotion of government's advantage policy, and new-energy automobile obtains quick development. And the battery of dynamical system is the core component of new-energy automobile, therefore the safety of batteries of electric automobile is most important for car load. Battery management system (BATTERYMANAGEMENTSYSTEM, BMS), it it is the important tie connecting vehicle mounted dynamic battery and electric automobile, its major function includes: battery physical parameter is monitored in real time, battery status is estimated, inline diagnosis and early warning, discharge and recharge and preliminary filling control, balanced management and heat management etc., therefore the reliability of battery management system (BMS) is directly connected to the safety that batteries of electric automobile is applied.
And the accuracy of the clock module of battery management system BMS directly affects the trackability of whole battery management system work. At present, in battery management system, the work of clock chip is powered by the battery of clock module. Along with clock chip works, the battery electric quantity in clock module constantly consumes, if battery power consumption is complete, can affect the normal operation of clock chip, and then affect the trackability of whole battery management system.
Utility model content
The purpose of this utility model is to overcome shortcomings and deficiencies of the prior art, it is provided that the power supply circuit of clock of a kind of battery management system.
The purpose of this utility model is achieved through the following technical solutions:
The power supply circuit of clock of battery management system, including: the first voltage reduction module, the clock module of the second voltage reduction module and built-in rechargeable lithium ion batteries, the input of described first voltage reduction module and the second voltage reduction module is connected with external power supply respectively, the outfan of described first voltage reduction module and the outfan of the second voltage reduction module are connected with the input of clock module respectively, the end that controls of described first voltage reduction module is connected with the control centre of battery management system by switching K1, during battery management system work, switch K1 Guan Bi, first voltage reduction module is powered for battery management system and clock module simultaneously, second voltage reduction module is also powered for clock module, under battery management system during electricity, switch K1 disconnects, and the first voltage reduction module is without output, and the second voltage reduction module is individually for clock and powers.
As preferably, series diode D1 between cathode output end and the clock module of described first voltage reduction module.
As preferably, series diode D2 between cathode output end and the clock module of described second voltage reduction module.
As preferably, the input of described first voltage reduction module and the input of the second voltage reduction module are all connected with Vehicular accumulator cell.
This utility model includes advantages below and beneficial effect compared to existing technology:
(1) this utility model is when battery management system works, and the first voltage reduction module and the second voltage reduction module are powered for clock module simultaneously; When battery management system does not work, second voltage reduction module is that clock is powered, so guarantee at any time, all having external power supply is that clock module is powered, lithium ion battery in clock module is constant electricity, and then guarantee clock module normal operation, further ensure that battery management system normal operation.
(2) prevented the output voltage anti-channeling of the second voltage reduction module outfan to the first voltage reduction module by diode D1, it is achieved isolation.
(3) prevented the output voltage anti-channeling of the first voltage reduction module outfan to the second voltage reduction module by diode D2, it is achieved isolation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the power supply circuit of clock of this utility model battery management system.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As it is shown in figure 1, the power supply circuit of clock of battery management system, including: the clock module of the first voltage reduction module, the second voltage reduction module, diode D1, diode D2 and built-in rechargeable lithium ion batteries. The input of described first voltage reduction module and the second voltage reduction module is connected with external power supply respectively. Described external power supply is the Vehicular accumulator cell of 12V or 24V. The outfan of described first voltage reduction module and the outfan of the second voltage reduction module are connected with the input of clock module respectively. In the present embodiment, the cathode output end of described first voltage reduction module is connected with the positive pole of diode D1, the negative pole of diode D1 and the electrode input end of clock module. The cathode output end of described second voltage reduction module is connected with the positive pole of diode D2, and the negative pole of diode D2 is connected with the electrode input end of clock module.
The end that controls of described first voltage reduction module is connected with the control centre of battery management system by switching K1, during battery management system work, switch K1 Guan Bi, first voltage reduction module is powered for battery management system and clock module simultaneously, under battery management system during electricity, switch K1 disconnects, and the first voltage reduction module is without output. Described second voltage reduction module constant output 5V voltage is that clock module is powered, and when battery management system works, the first voltage reduction module and the second voltage reduction module are powered for clock circuit simultaneously; Under battery management system during electricity, described second voltage reduction module is individually for clock module and powers.
The load of described first voltage reduction module is battery management system and clock module, only just exports corresponding voltage when battery management system works and powers for battery management system and clock module simultaneously, and the first voltage reduction module selects the voltage reduction module of high power consumption. The load of described second voltage reduction module is clock module, is continuously clock module and powers, and the second voltage reduction module selects the voltage reduction module of low-power consumption.
Embodiment described above only have expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to this utility model the scope of the claims. It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model. Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (4)
1. the power supply circuit of clock of battery management system, it is characterized in that, including: the first voltage reduction module, the clock module of the second voltage reduction module and built-in rechargeable lithium ion batteries, the input of described first voltage reduction module and the second voltage reduction module is connected with external power supply respectively, the outfan of described first voltage reduction module and the outfan of the second voltage reduction module are connected with the input of clock module respectively, the end that controls of described first voltage reduction module is connected with the control centre of battery management system by switching K1, during battery management system work, switch K1 Guan Bi, first voltage reduction module is powered for battery management system and clock module simultaneously, second voltage reduction module is also powered for clock module, under battery management system during electricity, switch K1 disconnects, and the first voltage reduction module is without output, and the second voltage reduction module is individually for clock and powers.
2. the power supply circuit of clock of battery management system according to claim 1, it is characterised in that: series diode D1 between cathode output end and the clock module of described first voltage reduction module.
3. the power supply circuit of clock of battery management system according to claim 1, it is characterised in that: series diode D2 between cathode output end and the clock module of described second voltage reduction module.
4. the power supply circuit of clock of the battery management system according to any one of claim 1-3, it is characterised in that: the input of described first voltage reduction module and the input of the second voltage reduction module are all connected with Vehicular accumulator cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118435.2U CN205283196U (en) | 2015-12-26 | 2015-12-26 | Battery management system's clock supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118435.2U CN205283196U (en) | 2015-12-26 | 2015-12-26 | Battery management system's clock supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205283196U true CN205283196U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201521118435.2U Active CN205283196U (en) | 2015-12-26 | 2015-12-26 | Battery management system's clock supply circuit |
Country Status (1)
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| CN (1) | CN205283196U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701773A (en) * | 2020-12-02 | 2021-04-23 | 浙江大华技术股份有限公司 | Power supply device and method for vehicle-mounted camera |
| DE102022212012A1 (en) | 2022-11-14 | 2024-05-16 | Robert Bosch Gesellschaft mit beschränkter Haftung | System for checking the plausibility of a first clock of a system base chip of an electrochemical energy storage device and method for operating a system for checking the plausibility of a first clock of a system base chip of an electrochemical energy storage device |
-
2015
- 2015-12-26 CN CN201521118435.2U patent/CN205283196U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701773A (en) * | 2020-12-02 | 2021-04-23 | 浙江大华技术股份有限公司 | Power supply device and method for vehicle-mounted camera |
| DE102022212012A1 (en) | 2022-11-14 | 2024-05-16 | Robert Bosch Gesellschaft mit beschränkter Haftung | System for checking the plausibility of a first clock of a system base chip of an electrochemical energy storage device and method for operating a system for checking the plausibility of a first clock of a system base chip of an electrochemical energy storage device |
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| GR01 | Patent grant |