CN214123954U - Self-powered battery cluster system - Google Patents
Self-powered battery cluster system Download PDFInfo
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- CN214123954U CN214123954U CN202023228024.2U CN202023228024U CN214123954U CN 214123954 U CN214123954 U CN 214123954U CN 202023228024 U CN202023228024 U CN 202023228024U CN 214123954 U CN214123954 U CN 214123954U
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- battery pack
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a self-powered battery cluster system, which comprises a plurality of battery pack systems, wherein each battery pack system comprises a battery pack and a control box, and further comprises a general control relay and a pre-charging relay S2 which are connected with the battery pack; the control box is connected with any battery pack to form a main control box; the battery pack is formed by connecting a plurality of battery cells, the battery pack is connected with a battery pack sampling plate, the control box comprises a BMS control panel, and the BMS control panel comprises a DC/DC system with power down. When a certain battery core works abnormally, the battery pack system automatically cuts off the work of the battery pack loop after judging; the battery pack generates a power supply capable of automatically powering off and controls the main control relay; only one battery pack needs to be authenticated for product safety certification, and the battery packs can be combined at will; when the whole system is not supplied with external power, the working period of the relay is not interrupted; the overall scheme achieves low maintenance costs at the battery pack level.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment, concretely relates to self-power battery cluster system.
Background
At present, a household battery cluster adopts battery packs connected in series, and a master control box is used as a load permission mode or a load permission mode. In practical application, when a system detects that a certain group of batteries cannot work, the whole system needs to stop working. And the household product needs to complete the maximum possible charge and discharge work in the whole life cycle.
The topological diagram of the conventional battery cluster system architecture is shown in fig. 1, and the system consists of: the battery pack is composed of rated cells, the battery packs with rated quantity form a battery cluster, a special main control box controls the on-off state of the batteries, and the main control box controls a relay and needs to be additionally provided with a power supply along with the whole battery pack, so that a power supply module needs to be additionally arranged outside for auxiliary power supply; when a certain battery core works abnormally, the whole battery cluster cannot work, the external auxiliary power supply needs to be isolated and run through the whole battery pack, and the normal power consumption is large; and in each group of battery pack, an isolated power supply which is independently converted is required, the power supply cost is high, the safety certification of the whole system is required during the safety certification, the repeated certification is required for different combinations, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide a self-power battery cluster system, can break off trouble group battery and continue work after the group battery in the battery cluster damages, reduce consumption and cost.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
a self-powered battery cluster system comprises a plurality of battery pack systems, wherein each battery pack system comprises a battery pack and a control box, and further comprises a master control relay and a pre-charging relay S2 which are connected with the battery pack; the control box is connected with any battery pack to form a main control box; the battery pack is formed by connecting a plurality of battery cells, the battery pack is connected with a battery pack sampling plate, the control box comprises a BMS control panel, and the BMS control panel comprises a DC/DC system with power down. When a certain battery cell works abnormally, the self-powered battery cluster system automatically cuts off the work of a battery pack loop after the battery pack system judges; the DC/DC system can generate a self-powered-off power supply inside and control the main control relay, only one battery pack needs to be authenticated during product safety certification, and the battery packs can be combined at will.
Further, the master control relay is a single-pole double-throw switch type direct current relay S1, and the pre-charging relay S2 is connected with a pre-charging resistor R1. Each battery pack system is additionally provided with a single-pole double-throw switch type main relay, a pre-charging relay S2 and a pre-charging circuit are additionally arranged on the relay, when the condition that a certain battery pack is recovered to be normal is detected, the battery pack is connected in series into a total battery cluster at any time, and when the system detects that a certain battery pack is damaged, the battery pack is disconnected in time, so that the whole system is continuously in work.
Furthermore, the battery pack sampling plate collects voltage and temperature data of the battery cell and outputs the sampled data to the control box through the bus. The battery pack sampling board provides detailed sampling data such as cell voltage temperature and the like, and the data are output to the corresponding control box through the bus, or system information on the bus is acquired and output to the main control box for overall control.
Further, the single-pole double-throw switch type direct current relay S1 includes a normally open contact, a normally closed contact and an input contact, and the normally open contact is connected with the total positive terminal of the battery cell in the battery pack after connection; the normally closed contact is connected with the total negative electrode after the connection of the battery cell in the battery pack and is connected with the negative terminal of the battery pack; the input contact is connected with the positive terminal of the battery pack.
Further, the BMS control board is connected to the single pole double throw switch type dc relay S1 and the pre-charge relay S2 through two control lines, respectively. Each battery pack system is provided with a master control relay and a pre-charging relay, additionally collects current parameters and the like, and controls the on and off of the relays in the battery pack system through a BMS control panel.
Further, the BMS control panel also comprises an isolation sampling, a grounding detection, a communication port and a wake-up dry contact.
Further, the ground detection is connected to the metal case of the corresponding battery pack system.
Furthermore, the isolation sampling of the master control box is connected to the output of the total positive terminal of the battery pack system and the output of the total negative terminal of the battery pack system. When the master controller is used, the isolated sampling is connected to the output of the total positive terminal of the battery pack system and the output of the total negative terminal of the battery pack system, otherwise, the isolated sampling is not connected.
Further, a communication port of the BMS control panel is connected with a bus communication port, and the communication port is RS485 or CAN.
Further, the BMS control board also comprises internal cell current sampling and battery cluster total current sampling.
Compared with the prior art, the utility model has the advantages of:
1. the utility model relates to a self-powered battery cluster system, when a certain battery core works abnormally, the battery pack system automatically cuts off the battery pack loop after judging, and the work of the battery cluster system is not influenced;
2. the utility model generates a power supply which can automatically power off in the battery pack and controls the main control relay; only one battery pack needs to be authenticated for product safety certification, and the battery packs can be combined at will;
3. when the whole system of the utility model has no external power supply, the working cycle of the relay does not break; the overall scheme achieves low maintenance costs at the battery pack level.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a topology diagram of a prior art conventional battery cluster system architecture;
fig. 2 is a diagram of the structure of the battery cluster system of the present invention;
fig. 3 is a schematic diagram of the battery pack system according to the present invention.
In the figure, a single-pole double-throw switch type direct current relay S1, a pre-charging relay S2, a pre-charging resistor R1, a normally open contact S1_1, a normally closed contact S1_2 and an input contact S1_ 3.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution in the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a self-powered battery cluster system comprises a plurality of battery pack systems, wherein each battery pack system comprises a battery pack and a control box, and further comprises a general control relay and a pre-charging relay S2 connected with the battery pack; the control box is connected with any battery pack to form a main control box; the battery pack is formed by connecting a plurality of battery cells, the battery pack is connected with a battery pack sampling plate, the control box comprises a BMS control panel, and the BMS control panel comprises a DC/DC system with power down. In the self-powered battery cluster system, when a certain battery cell does not work normally, the battery pack system automatically cuts off the work of the battery pack loop after judging; the DC/DC system can generate a power supply for self power-off and control the main control relay; only one battery pack needs to be authenticated during product safety certification, and the battery packs can be combined at will.
The main control relay in this embodiment is a single-pole double-throw switch type dc relay S1, and the pre-charging relay S2 is connected with a pre-charging resistor R1. The single-pole double-throw switch type direct current relay S1 comprises a normally open contact S1_1, a normally closed contact S1_2 and an input contact S1_3, wherein the normally open contact S1_1 is connected with the total positive voltage of the connected battery cells in the battery pack; the normally closed contact S1_2 is connected with the total negative of the battery cell in the battery pack after connection and is connected with the negative terminal of the battery pack; the input contact S1_3 is connected to the positive terminal of the battery pack. Each battery pack system is additionally provided with a single-pole double-throw switch type main relay, a pre-charging relay S2 and a pre-charging circuit are additionally arranged on the relay, when the condition that a certain battery pack is recovered to be normal is detected, the battery pack system is connected in series at any time, and when the system detects that a certain battery pack is damaged, the battery pack is timely disconnected, so that the whole system is continuously in work. In the embodiment, the master control relay, the pre-charging relay S2 and the pre-charging resistor R1 are matched with parameters according to the system.
The battery pack sampling board of the embodiment collects voltage and temperature data of the battery core, and outputs the sampled data to the corresponding control box through the bus. The battery pack sampling board provides detailed sampling data such as cell voltage temperature and the like, and the detailed sampling data is output to the control box through the bus, or system information on the bus is acquired and output to the main control box for overall control.
The BMS control board of the present embodiment is connected to the single pole double throw switch type dc relay S1 and the pre-charge relay S2 through two control lines, respectively. Each battery pack system is provided with a master control relay and a pre-charging relay, additionally collects current parameters and the like; the opening and closing of the relay in the battery pack system are controlled by the BMS control board. The BMS control board further comprises internal cell current sampling and battery cluster total current sampling.
This embodiment BMS control panel still includes and keeps apart the sampling, ground connection detects, communication port and awakens up dry contact. The ground detection is connected to the metal casing of the corresponding battery pack system. And a communication port of the BMS control panel is connected with a bus communication port, and the communication port is RS485 or CAN.
The isolated sampling of the master control box of the present embodiment is connected to the output of the total positive terminal of the battery pack system and the output of the total negative terminal of the battery pack system. When the master controller is used, the total voltage positive end output of the battery pack system and the total voltage negative end output of the battery pack system are isolated and sampled, and otherwise, the master controller is not connected.
The utility model discloses the work flow that the group battery established ties and gets into the battery cluster is as follows:
(1) after the battery cluster system is connected, the internal battery core is normally connected, the power generated by the internal battery core is output to the BMS control panel, the judgment is carried out through the internal DC/DC system, after the specified voltage value is met, the dry contact input is awakened, the power supply of the BMS control panel is triggered to work, and the MCU of the BMS control panel is powered on to work;
(2) after the MCU of the BMS control panel is electrified, receiving the data of the bus and judging whether the battery pack system is merged into the battery cluster system or not according to the actual state of the current battery pack system;
(3) after the BMS control board judges and determines to be merged into the battery pack system, firstly, a command of requiring serial connection to enter the battery pack system is sent to a bus, after the bus is allowed, the bus feedback power is waited to be reduced to the range of allowing the serial connection to enter the battery pack system, the fact that the current sampling meets the system condition on the total current sampling of the battery pack is detected, a pre-charging relay S2 is switched on, and after the pre-charging is completed, a single-pole double-throw switch type direct current relay S1 is switched on, so that the battery pack system is connected in series to enter the battery pack system.
The utility model discloses the work flow that the group battery disconnection breaks away from the battery cluster is as follows:
(1) when the MCU of the system BMS control board judges that the battery cluster needs to be separated, a demand separation command is sent to the bus;
(2) after the permission of the bus is obtained, a single-pole double-throw switch type direct current relay S1 of the corresponding battery pack system is directly closed;
(3) if the battery pack system is judged to be in a specific state, if the battery pack system has an extremely low voltage fault and cannot work again, the battery pack system is subjected to self-power-off operation; the whole battery pack completely enters an extremely low power consumption state, and other battery cells of the battery pack are protected; and after maintenance is finished, power-on judgment is carried out.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A self-powered battery cluster system is characterized by comprising a plurality of battery pack systems, wherein each battery pack system comprises a battery pack and a control box, and further comprises a master control relay and a pre-charging relay S2 which are connected with the battery pack; the control box is connected with any battery pack to form a main control box; the battery pack is formed by connecting a plurality of battery cells, the battery pack is connected with a battery pack sampling plate, the control box comprises a BMS control panel, and the BMS control panel comprises a DC/DC system with power down.
2. The self-powered battery cluster system of claim 1, wherein the general control relay is a single-pole double-throw switch type DC relay S1, and a pre-charging resistor R1 is connected to the pre-charging relay S2.
3. The self-powered battery cluster system of claim 1, wherein the battery pack sampling board collects voltage and temperature data of cells and outputs the sampled data to the control box through a bus.
4. The self-powered battery cluster system of claim 2, wherein the single-pole double-throw switch-type dc relay S1 comprises a normally open contact, a normally closed contact and an input contact, wherein the normally open contact is connected with the total positive of the battery pack internal cells after connection; the normally closed contact is connected with the total negative electrode after the connection of the battery cell in the battery pack and is connected with the negative terminal of the battery pack; the input contact is connected with the positive terminal of the battery pack.
5. The self-powered battery cluster system of claim 1, wherein the BMS control board is connected to the single-pole double-throw switch-type DC relay S1 and the pre-charge relay S2 through two control lines.
6. The self-powered battery cluster system of claim 1, wherein the BMS control board further comprises isolation sampling, ground detection, a communication port, and a wake dry contact.
7. The self-powered battery cluster system of claim 6, wherein the ground detect is coupled to a metal housing of the corresponding battery system.
8. The self-powered battery cluster system of claim 1, wherein the isolated sample of the master control box is coupled to the battery system main positive terminal output and the battery system main negative terminal output.
9. The self-powered battery cluster system of claim 6, wherein the communication port of the BMS control board is connected to a bus communication port, and the communication port is RS485 or CAN.
10. The self-powered battery cluster system of claim 1, wherein the BMS control board further comprises internal cell current sampling and battery cluster total current sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023228024.2U CN214123954U (en) | 2020-12-28 | 2020-12-28 | Self-powered battery cluster system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023228024.2U CN214123954U (en) | 2020-12-28 | 2020-12-28 | Self-powered battery cluster system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214123954U true CN214123954U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023228024.2U Active CN214123954U (en) | 2020-12-28 | 2020-12-28 | Self-powered battery cluster system |
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| Country | Link |
|---|---|
| CN (1) | CN214123954U (en) |
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2020
- 2020-12-28 CN CN202023228024.2U patent/CN214123954U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210927 Address after: 213031 Tianhe PV Industrial Park No. 2, Xinbei District, Changzhou, Jiangsu Patentee after: TRINA ENERGY STORAGE SOLUTIONS (JIANGSU) Co.,Ltd. Address before: 213031 Tianhe PV Industrial Park No. 2, Xinbei District, Changzhou, Jiangsu Patentee before: TRINA SOLAR Co.,Ltd. |
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| TR01 | Transfer of patent right |