CN219610532U

CN219610532U - Digital battery cabinet

Info

Publication number: CN219610532U
Application number: CN202221182456.0U
Authority: CN
Inventors: 诸正龙; 刘强; 应翔宇
Original assignee: Zhejiang Shanghua Electronic Technology Co ltd
Current assignee: Zhejiang Shanghua Electronic Technology Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2023-08-29
Anticipated expiration: 2032-05-17

Abstract

The utility model relates to the technical field of storage batteries, in particular to a digital battery cabinet. The device comprises a storage bracket, a centralized control device, a data acquisition device and a feedback device, wherein the data acquisition device is arranged on the storage bracket and is electrically connected with the centralized control system, and the centralized control device is connected with the feedback device through signals. The utility model can detect the internal resistance, temperature and voltage of the storage battery, the total voltage in the whole cabinet, the environmental temperature trend and the charge and discharge current. The degree of battery health of the single cell, the current capacity of the single cell. When the battery is abnormal, the alarm information and the alarm content are pushed to the user in a multi-mode manner through the intelligent platform of the digital battery cabinet. The method lays a solid foundation for the convenience of the user to maintain the battery and manage the battery in the future.

Description

Digital battery cabinet

Technical Field

The utility model relates to the technical field of storage batteries, in particular to a digital battery cabinet.

Background

The battery cabinet (rack) in the current market is simply a traditional iron sheet cabinet or a steel frame structure, the batteries in the cabinet (rack) cannot be effectively monitored and managed, when a certain battery is abnormal, a user cannot immediately and intuitively acquire the data of the batteries, namely the state, and the user needs to regularly patrol and examine all the batteries by opening the traditional battery cabinet, so that the battery state is generally judged by screening, the root cause of the battery cabinet (rack) only plays a role in storing the batteries with the traditional battery cabinet (rack), more intelligent operation cannot be provided for the user, and the uncertainty exists, and serious accidents such as fire disaster and the like even occur.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a digital battery cabinet to solve the problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the digital battery cabinet comprises a storage bracket, a centralized control device, a data acquisition device and a feedback device, wherein the data acquisition device is arranged on the storage bracket and is electrically connected with the centralized control system, and the centralized control device is connected with the feedback device through signals. The data acquisition device is used for acquiring data of the battery on the storage support, the acquired data including but not limited to internal resistance, temperature, voltage, group current, residual capacity and the like are transmitted to the centralized control system, the centralized control system is used for carrying out simple processing, and the data are fed back to a feedback device at hand of a worker according to requirements. The battery condition on the storage bracket can be monitored immediately by a worker.

Optionally, the data acquisition device include battery internal resistance acquisition device, battery voltage acquisition device and battery temperature acquisition device, the storage support on be provided with a plurality of battery storage positions, the battery storage position on all be equipped with battery internal resistance acquisition device, battery voltage acquisition device and battery temperature acquisition device. The battery internal resistance acquisition device adopts an improved micro-current alternating current injection method to acquire the effective internal resistance of the battery, and comprises R1, R2, R3 and R4, wherein R1-R4 are lead resistances, one end of R1 is connected with a detection circuit, the other end of R1 is connected with one end of a battery circuit, one end of R2 is connected with the detection circuit, the other end of R2 is connected with one end of the battery circuit, one end of R3 is connected with the detection circuit, the other end of R3 is connected with the other end of the battery circuit, one end of R4 is connected with the detection circuit, and the other end of R4 is connected with the other end of the battery circuit. R2 and R3 are connected into an internal high-impedance measuring circuit, almost no current passes through, and the voltage is close to 0, so that the internal resistance of the lead is negligible. The metering circuit measures only about 1kHZ synchronous signals by using a synchronous detection method, and the ripple interference in the on-line state has no influence on the measurement result under the condition that the ripple interference does not exceed the limit of the pre-amplifying circuit.

Optionally, the storage support include multilayer support, front bezel, curb plate and back plate, battery storage position set up on multilayer support, centralized control device set up on the front bezel.

Optionally, an audible and visual alarm is further arranged on the front plate, and the audible and visual alarm is electrically connected with the centralized control device.

Optionally, a touch display screen is further disposed on the front plate, and the touch display screen is electrically connected with the centralized control device.

Optionally, the storage bracket is provided with an air cooling device, the air cooling device comprises an air driving device, a first air cooling channel and a second air cooling channel, the air driving device is connected with the first air cooling channel, the first air cooling channel is provided with a plurality of first openings and is arranged on the battery storage position, and the second air cooling channel is provided with a plurality of second openings and is arranged on the battery storage position.

Optionally, the air cooling device further comprises a refrigerating device, and the refrigerating device is connected with the first air cooling channel.

The utility model has the beneficial technical effects that: in order to solve the problem that the battery cabinet in the market can not provide intelligent management operation as a starting point, the aim is to provide more intelligent operation for users on the premise of ensuring the safety of the battery. The internal resistance, temperature and voltage of the storage battery, total voltage in the whole cabinet, environmental temperature trend and charge and discharge current are detected. The degree of battery health of the single cell, the current capacity of the single cell. When the battery is abnormal, the alarm information and the alarm content are pushed to the user in a multi-mode manner through the intelligent platform of the digital battery cabinet. The method lays a solid foundation for the convenience of the user to maintain the battery and manage the battery in the future.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the connection relationship among the centralized control device, the data acquisition device and the feedback device;

FIG. 3 is a schematic diagram of an air cooling device according to the present utility model;

FIG. 4 is a schematic diagram of a microcurrent resistance test circuit according to the present utility model.

Reference numerals: the device comprises a 1-multilayer bracket, a 2-centralized control device, a 3-data acquisition device, a 4-feedback device, a 5-battery internal resistance acquisition device, a 6-battery voltage acquisition device, a 7-battery temperature acquisition device, an 8-front plate, a 9-side plate, a 10-rear plate, an 11-audible and visual alarm, a 12-touch display screen, a 13-air driving device, a 14-first air cooling channel, a 15-second air cooling channel and a 16-refrigerating device.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

Referring to fig. 1-3, a digital battery cabinet comprises a storage bracket, a centralized control device 2, a data acquisition device 3 and a feedback device 4, wherein the data acquisition device 3 is arranged on the storage bracket, the data acquisition device 3 is electrically connected with the centralized control system, and the centralized control device 2 is connected with the feedback device 4 through signals. The data acquisition device 3 comprises a battery internal resistance acquisition device 5, a battery voltage acquisition device 6 and a battery temperature acquisition device 7, a plurality of battery storage positions are arranged on the storage support, and the battery internal resistance acquisition device 5, the battery voltage acquisition device 6 and the battery temperature acquisition device 7 are arranged on the battery storage positions.

The storage bracket comprises a multi-layer bracket 1, a front plate 8, a side plate 9 and a rear plate 10, wherein a battery storage position is arranged on the multi-layer bracket 1, and the centralized control device 2 is arranged on the front plate 8. The front plate 8 is also provided with an audible and visual alarm 11, and the audible and visual alarm 11 is electrically connected with the centralized control device 2. The front plate 8 is also provided with a touch control display screen 12, and the touch control display screen 12 is electrically connected with the centralized control device 2. The storage bracket is provided with an air cooling device, the air cooling device comprises an air driving device 13, a first air cooling channel 14 and a second air cooling channel 15, the air driving device 13 is connected with the first air cooling channel 14, the first air cooling channel 14 is provided with a plurality of first openings arranged on a battery storage position, and the second air cooling channel 15 is provided with a plurality of second openings arranged on the battery storage position. The air cooling device further comprises a refrigerating device 16, and the refrigerating device 16 is connected with the first air cooling channel 14. The outlet of the first air cooling channel 14 is located on the upper surface of the battery storage position and corresponds to the gaps between the batteries, and the blown cooling air passes through the gaps between the batteries from bottom to top to take away heat. The outlet of the second air cooling channel 15 is positioned on the lower surface of the battery storage position and does not correspond to gaps among the batteries, so that cooling gas flows through the upper part of the batteries, and waste heat generated by the batteries and waste heat generated by the data acquisition device 3 can be effectively taken away.

The battery internal resistance acquisition device 5 acquires the effective internal resistance of the battery by adopting an improved micro-current alternating current injection method, and comprises R1, R2, R3 and R4, wherein R1-R4 are lead resistances, one end of R1 is connected with a detection circuit, the other end of R1 is connected with one end of a battery circuit, one end of R2 is connected with the detection circuit, the other end of R2 is connected with one end of the battery circuit, one end of R3 is connected with the detection circuit, the other end of R3 is connected with the other end of the battery circuit, one end of R4 is connected with the detection circuit, and the other end of R4 is connected with the other end of the battery circuit. R2 and R3 are connected into an internal high-impedance measuring circuit, almost no current passes through, and the voltage is close to 0, so that the internal resistance of the lead is negligible. The metering circuit measures only about 1kHZ synchronous signals by using a synchronous detection method, and the ripple interference in the on-line state does not affect the measurement result under the condition that the ripple interference does not exceed the limit of the pre-amplification circuit.

After the batteries are placed on the battery cabinet, a module detection line is required to be installed on each battery, and after the installation is finished, all installation procedures are completed by butting the single battery data acquisition modules. The battery cabinet can be started only by connecting an external power supply of the battery cabinet. Compared with the traditional detection means, the method does not need complicated configuration, realizes instant use after power-on, and is very convenient.

The data acquisition device 3 is used for acquiring data of the battery on the storage bracket, the acquired data including but not limited to internal resistance, temperature, voltage, group current, residual capacity and the like are transmitted to the centralized control system, the centralized control system is used for carrying out simple processing, and the data are fed back to the feedback device 4 at the hand of a worker according to requirements. The battery condition on the storage bracket can be monitored immediately by a worker.

The utility model also has the following advantages:

1. the working current of the product is extremely small, and the product has little influence on the storage battery.

The average working current of the product in the general mode is less than 1 milliamp, which is far lower than the influence of self-discharge and ripple waves of the battery on the battery. And detecting that the battery is offline, entering a power-saving state, enabling the dormant current to be about 30ua level, and enabling the system to wake up at regular time to report the voltage and the temperature of the battery.

2. The internal resistance detection adopts a small current method, and the safety is good.

The internal resistance test current of the battery module of the digital battery cabinet is about 70 milliamperes, and the influence on the battery is extremely low.

At present, internal resistance detection is divided into the following categories according to measured current:

heavy current method (current is about tens of amperes)

The direct current method generally uses several tens amperes of impact current to measure the instantaneous discharge voltage of the battery when measuring the internal resistance of the battery. The effective resistance of the battery is obtained by submerging noise with a large response signal. The method has accurate measurement results, but has large impact on the battery and serious heat generation.

Medium current (current about several amperes)

The battery is subjected to alternating current test by using a current of a few amperes, and the internal resistance, or impedance of the battery is calculated by means of digital filtering and the like. This method is typically used on low frequency measurement products such as 25 HZ. The measurement repeatability is good, but the response to the dynamic internal resistance of the storage battery is different from the internal resistance generally described in the industry. Several amperes of current can have some impact on the battery.

Microcurrent (less than 100 milliamp)

The AC small signal is used for detecting the internal resistance of the battery, and almost no influence is caused on the battery.

The digital cell cabinet storage battery monitoring uses a micro-current (about 70 milliamperes) testing method, and the single detection module hardly generates heat.

3. Good anti-interference

The internal resistance test uses synchronous detection, and can separate measurement signals from thousands of times of strength interference, and the odd and even harmonics are free from interference.

4. The measurement results have comparability

The dynamic resistance part of the storage battery has different resistance responses under different test frequencies, 1kHZ is the internal resistance measurement frequency used by a daily-use common inspection instrument, and the like, and is also a common internal resistance measurement condition of the battery in the industry. The product selects an on-line test signal of 1kHZ, so that the measurement record is comparable with a standard instrument. Other frequency measurement products, while internal resistance measurements are comparable to their own long-term measurement records, cannot verify and calibrate the measurement results due to the lack of standard equipment in the market.

5. The voltage measurement accuracy is high.

The battery voltage monitoring part uses 24-bit high-precision AD and low-temperature drift reference voltage sources, and provides voltage resolution close to that of a five-bit half-multimeter. The voltage of the 12v battery is reported, 4 bits (0.1 millivolt) after the decimal point is reserved, the self-discharge condition of each battery in the battery pack can be compared and observed, and a basis is provided for judging the consistency of the battery pack.

6. Wireless networking and convenient maintenance.

And the ISM 2.4GHz GFSK mode wireless ad hoc network is used, so that the trouble of communication line connection and address configuration is avoided. The later maintenance cost is extremely low, the damaged unit is directly replaced, and special address configuration equipment and personnel are not needed.

Each unit of battery monitoring is physically and completely isolated, and is more convenient and quicker than wired equipment, and electric isolation is more thorough.

The wireless communication device uses micro-power consumption digital communication, only effectively communicates in a room, and the wall shields wireless signals without worrying about leakage of remote information.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A digital battery cabinet, characterized in that: the device comprises a storage bracket, a centralized control device, a data acquisition device and a feedback device, wherein the data acquisition device is arranged on the storage bracket and is electrically connected with the centralized control system, and the centralized control device is connected with the feedback device through signals.

2. A digital battery cabinet according to claim 1, wherein: the data acquisition device comprises a battery internal resistance acquisition device, a battery voltage acquisition device and a battery temperature acquisition device, wherein a plurality of battery storage positions are arranged on the storage support, and the battery internal resistance acquisition device, the battery voltage acquisition device and the battery temperature acquisition device are all arranged on the battery storage positions.

3. A digital battery cabinet according to claim 2, wherein: the storage support comprises a multi-layer support, a front plate, side plates and a rear plate, wherein the battery storage position is arranged on the multi-layer support, and the centralized control device is arranged on the front plate.

4. A digital battery cabinet according to claim 3, wherein: the front plate is also provided with an audible and visual alarm which is electrically connected with the centralized control device.

5. A digital battery cabinet according to claim 3, wherein: the front plate is also provided with a touch display screen which is electrically connected with the centralized control device.

6. A digital battery cabinet according to any of claims 2-5, characterized in that: the storage bracket is provided with an air cooling device, the air cooling device comprises an air driving device, a first air cooling channel and a second air cooling channel, the air driving device is connected with the first air cooling channel, the first air cooling channel is provided with a plurality of first openings, the battery storage position is provided with a plurality of second openings, and the second air cooling channel is provided with a plurality of second openings.

7. A digital battery cabinet according to claim 6, wherein: the air cooling device further comprises a refrigerating device, and the refrigerating device is connected with the first air cooling channel.