CN111948551A - Battery data sensing device, battery pack discharge detection system and use method thereof - Google Patents
Battery data sensing device, battery pack discharge detection system and use method thereof Download PDFInfo
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- CN111948551A CN111948551A CN202010831943.4A CN202010831943A CN111948551A CN 111948551 A CN111948551 A CN 111948551A CN 202010831943 A CN202010831943 A CN 202010831943A CN 111948551 A CN111948551 A CN 111948551A
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- battery
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- battery data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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Abstract
A battery data sensing device is used for sensing the voltage difference and the temperature between the positive electrode and the negative electrode of a single battery unit and comprises a voltage sensor, a temperature sensor and a communication module; the communication module is composed of a sensing end wireless communication module and can transmit signals encoded with at least one of voltage information and temperature information; the battery unit is used for supplying power for the battery data sensing device. A battery pack discharge detection system comprises a discharge device, an alarm device and a battery data sensing device, wherein the battery data sensing device is used for being in wireless communication connection with the discharge device. The use method of the battery pack discharge detection system comprises the following steps: the battery data sensing device is in heartbeat communication with the discharging device, and the discharging device drives the alarm device to give an alarm when not receiving the communication signal of the battery data sensing device in at least two heartbeat communication periods. The battery data sensing device can be fixed on the electrode of the battery unit in a relatively simplified manner.
Description
Technical Field
The invention relates to the technical field of battery pack maintenance, in particular to a battery data sensing device, a battery pack discharge detection system and a use method of the battery pack discharge detection system.
Background
The control circuit of the electric facility of the transformer substation generally adopts 220V direct current power supply, and the power supply mode comprises the following steps: the alternating current is converted into the direct current, and the storage battery pack is used for supplying power when the alternating current supply fails. Generally, two groups of bus single-supply type transformer stations are provided with two groups of battery packs, one group is separated from a use environment during maintenance, and the other group simultaneously supplies power to electric facilities corresponding to the two groups of buses; the small-sized substation is provided with a group of battery packs, the small-sized substation is still in a use environment during maintenance, but the discharge electric quantity of the small-sized substation is controlled so as to meet the power supply requirement when needed, or the group of battery packs are separated from the use environment during maintenance and are charged and supplied with power by adopting direct current output.
Generally, a battery pack for a substation is formed by connecting 116 2V batteries in series to form a direct current power supply. When the battery pack is maintained, the specific maintenance mode is as follows: after the battery pack is operated for a certain period of time, if the constant-current discharge time of the battery pack meets the requirement (for example, the battery pack with the capacity of 200Ah discharges at the constant current of 20A for 10 h), the battery pack can meet the use requirement.
The existing battery pack discharge detection system comprises a discharge instrument and a battery data collector which are in wired connection, wherein the battery data collector comprises a voltage sensor. When in use, the following disadvantages exist: the number of cables is large, and the cables are not suitable for connecting a battery data collector and a battery; the connection between the battery data collector and the battery is not stable, and a short-circuit accident may be caused after the battery data collector falls off from the battery, and if the separation between the battery data collector and the battery cannot be found in time, the detection process needs to be restarted.
Disclosure of Invention
The invention aims to provide a battery data sensing device and a battery pack discharge detection system, and aims to solve the technical problem that the existing battery pack discharge detection system is inconvenient to use.
A second objective of the present invention is to provide a battery discharge detection system and a method for using the same, so as to solve the technical problem that the existing battery discharge detection system cannot timely issue an alarm for a falling event of a battery data sensing device.
The technical scheme of the invention is as follows:
a battery data sensing device is used for sensing the voltage difference and the temperature between the positive electrode and the negative electrode of a single battery unit and comprises a voltage sensor, a temperature sensor and a communication module; the voltage sensor is used for sensing the voltage difference of the battery unit and outputting a first signal encoded with voltage information; the temperature sensor is used for sensing the temperature of the battery unit and outputting a second signal encoded with temperature information; the communication module is composed of a sensing end wireless communication module and can transmit a third signal encoded with at least one of voltage information and temperature information; the battery unit is used for supplying power for the battery data sensing device.
Preferably, the device further comprises a control processing module, wherein the sensing end wireless communication module is arranged in the control processing module, or the sensing end wireless communication module is electrically connected with the control processing module correspondingly.
Preferably, the battery pack further comprises a detachable electric connection module, the detachable electric connection module comprises a power taking clamp, and a clamping part of the power taking clamp is provided with a clamping surface matched with the electrode of the battery unit.
Furthermore, two clamping parts of the power taking clamp are used for forming a quincuncial head type clamping surface.
A battery pack discharge detection system comprises a discharge device, an alarm device and a battery data sensing device, wherein the battery data sensing device is used for being in wireless communication connection with the discharge device, and the alarm device is used for outputting an alarm when the battery data sensing device detects that the battery data sensing device is in communication interruption with the discharge device and is in a detection period; the battery data sensing device is used for sensing the voltage difference between the positive electrode and the negative electrode and the temperature of a single battery unit, and the single battery unit is used for supplying power to the battery data sensing device.
Preferably, the battery data sensing device comprises a power supply module, the power supply module comprising a voltage boost circuit for enabling the output voltage of the battery unit to power the battery data sensing device.
Preferably, the discharge device comprises a discharge instrument with an instrument end wireless communication module.
Preferably, the number of the battery data sensing devices is more than or equal to the number of the battery units contained in the battery pack to be detected.
The use method of the battery pack discharge detection system comprises the following steps: during the detection period, the battery data sensing device is in heartbeat communication with the discharging device, and the discharging device drives the alarm device to give an alarm when not receiving the communication signal of the battery data sensing device in at least two heartbeat communication periods.
The invention has the beneficial effects that:
1. the battery data sensing device only uses a wireless communication mode to transmit the voltage information and the temperature information of one battery unit, and the detected battery unit supplies power to the battery data sensing device. Since the battery data sensing device can be realized more simply, it is also easier to fix on the electrodes of the battery cells.
2. The power connection electrode of the battery unit is generally provided with a threaded surface or a hexagonal screw head, the existing power taking clamp is generally an alligator clamp, the mismatch of the clamping surfaces is one of the reasons of causing the battery data sensing device, and the second reason of causing the battery data sensing device to fall off is that the existing battery data sensing device is provided with a wire tail, compared with the battery data sensing device, the wire tail is heavier, so that the adverse effect of too small clamping force caused by the fact that the alligator clamp is not matched with the power connection electrode of the battery unit is aggravated. The battery data sensing device provided by the invention is provided with the clamping surface matched with the electrode of the battery unit through the clamping part provided with the power taking clamp, so that the connection strength between the power taking clamp and the electrode of the battery unit is enhanced, the battery data sensing device is not provided with the wire tail, the falling tension of the wire tail to the power taking clamp is eliminated, the probability of falling off of the power taking clamp from the battery data sensing device and the power connection electrode of the battery unit is reduced, and the difficulty of obtaining effective detection data is also reduced.
3. Two clamping parts of the power taking clamp are used for forming a plum blossom head type clamping surface, the power taking clamp is easier to clamp a hexagonal nut or a hexagonal bolt, and the clamping function of the power taking clamp is beneficial to more stable clamping of the hexagonal nut or the hexagonal bolt.
4. The battery data sensing device and the discharging device of the battery pack discharging detection system do not need to be provided with cables, the cables do not need to be dragged during use, adverse effects of the dragged cables on other facilities do not need to be considered, and the battery pack discharging detection system is convenient to use. Since the battery data sensing device can be realized more simply, it is also easier to fix on the electrodes of the battery cells.
5. The boosting circuit helps to make up for the problem that the output voltage of the battery unit is not enough to drive the battery data sensing device to work.
6. Because the battery data sensing device is supplied with power by the battery unit to be tested, when the battery data sensing device is in a separated state with the battery unit, the battery data sensing device can not work normally, the working state of the battery data sensing device is monitored through heartbeat communication, an alarm can be sent out immediately when the battery data sensing device can not work normally, and the battery data sensing device is helpful for workers to maintain equipment in time.
Drawings
Fig. 1 is a circuit diagram of a power module of a battery data sensing device according to the present invention.
Fig. 2 is a circuit diagram of a control module of a battery data sensing device according to the present invention.
Fig. 3 is a circuit diagram of a wireless communication module of a battery data sensing device according to the present invention.
Fig. 4 is a circuit diagram of a voltage sensing circuit and a temperature sensing circuit of a battery data sensing device according to the present invention.
Fig. 5 is a front view of a power-taking clamp of a battery data sensing device according to the present invention.
Fig. 6 is a sectional view a-a of fig. 5.
Reference number indicates, 11-left clamp, 110-clamp, 111-clamp face, 12-right clamp, 13-connecting part, 131-screw, 132-nut, 14-upper torsion spring, 15-lower torsion spring.
Detailed Description
The present invention is described below in terms of embodiments in conjunction with the accompanying drawings to assist those skilled in the art in understanding and implementing the present invention. Unless otherwise indicated, the following embodiments and technical terms therein should not be understood to depart from the background of the technical knowledge in the technical field.
In the present invention, one battery may be regarded as one battery unit, and one group of batteries may also be regarded as one battery unit. Of course, when the battery data sensing device of the present invention is applied in a battery pack discharge detection system, the number of batteries constituting a single battery unit should be smaller than the number of batteries constituting a battery pack to be detected.
The battery data sensing device is used for sensing the voltage difference and the temperature between the positive electrode and the negative electrode of a single battery unit and comprises a voltage sensor, a temperature sensor and a communication module. The voltage sensor is used for sensing the voltage difference of the battery unit and outputting a first signal encoded with voltage information; the temperature sensor is used for sensing the temperature of the battery unit and outputting a second signal encoded with temperature information; the communication module is composed of a sensing end wireless communication module and can transmit a third signal encoded with at least one of voltage information and temperature information; the battery unit is used for supplying power for the battery data sensing device.
When the temperature sensor is used, the two wiring terminals of the voltage sensor are correspondingly and electrically connected with the anode and the cathode of the battery unit, the temperature sensor is arranged at the position of the battery unit suitable for measuring temperature, and the battery unit supplies power for the battery data sensing device at the same time. The sensing end wireless communication module is in wireless communication connection with matched wireless communication equipment. Thus, the battery data sensing device can complete the target function without arranging a wire tail.
Example 1: the invention discloses a battery data sensing device, which is used for sensing the voltage difference and the temperature between a positive electrode and a negative electrode of a single battery unit.
The voltage sensor is used for sensing the voltage difference of the battery unit and outputting a first signal encoded with voltage information. Fig. 4 shows a voltage sensing circuit constructed using a differential-mode proportional operation circuit. In the figure, the rectifier bridge is used for avoiding equipment damage caused by reverse connection of the positive electrode and the negative electrode.
The temperature sensor is used for sensing the temperature of the battery unit and outputting a second signal encoded with temperature information. Figure 4 shows a temperature sensing circuit consisting of a resistance bridge and a differential mode proportional arithmetic circuit. In the figure, the resistor R210 is a thermocouple, and the resistor R214 is a standard resistor.
The communication module is composed of a sensing end wireless communication module so as to be capable of transmitting a third signal encoded with at least one of voltage information and temperature information. Fig. 3 shows a sensing-end wireless communication module formed by nRF24L01+ type wireless communication chips, which is electrically connected with the control processing module correspondingly. Fig. 2 shows a control processing module and its peripheral circuits. The control processing module selects an STM8S105 type single chip microcomputer, an ADC module is arranged in the control processing module, and a 3.3V power supply mode is adopted.
The battery unit is used for supplying power for the battery data sensing device. Generally, the battery unit is a storage battery, and the output voltage of the storage battery is 12V direct current, so that the power module needs to include a voltage reduction circuit. However, in the substation battery pack, the battery cells thereof output 2V dc power, and therefore, the power supply module needs to include a booster circuit. Fig. 1 shows a booster circuit.
In this embodiment, the temperature sensing circuit cooperates with the control processing module and the ADC module to form a temperature sampling circuit, and the voltage sensing circuit cooperates with the control processing module and the ADC module to form a voltage sampling circuit. It should be understood that in the battery data sensing apparatus of the present invention, the control processing module is not necessary. For example, the comparison circuit may be a voltage comparison circuit, and the voltage sensing requirement of the battery cell may be satisfied by setting the reference voltage of the comparison circuit.
In the prior art, the sensing end wireless communication module may be embedded in the control processing module, or the sensing end wireless communication module is hung on the control processing module, and is electrically connected with the control processing module correspondingly.
The battery data sensing device can further comprise a detachable electric connection module, wherein the detachable electric connection module comprises a power taking clamp, and a clamping part of the power taking clamp is provided with a clamping surface matched with the electrode of the battery unit.
Fig. 5-6 show a power clip, wherein two clamping parts of the power clip are used for forming a quincuncial clamping surface. The electricity taking clamp in the shape is adapted to be detachably and electrically connected with a hexagon nut or a hexagon screw.
A battery pack discharge detection system of the present invention includes a discharge device, an alarm device, and a battery data sensing device. The battery data sensing device is used for being in wireless communication connection with the discharging device, and the alarm device is used for outputting an alarm when the battery data sensing device detects that the communication between the battery data sensing device and the discharging device is interrupted and is in a detection period; the battery data sensing device is used for sensing the temperature and the voltage difference between the positive electrode and the negative electrode of a single battery unit, and the single battery unit is used for supplying power to the battery data sensing device.
The aforementioned battery data sensing device of the present invention can be applied to the battery pack discharge detection system of the present invention.
When the battery pack discharge detection system is used for detecting a direct-current power supply battery pack of a transformer substation, the 2V direct-current voltage of the battery unit cannot meet the power supply voltage of the battery data sensing device, if the battery data sensing device is not selected to be provided with a power tail, the battery data sensing device and the discharge device have various communication modes, and the battery data sensing device also has various power supply modes. However, the battery data sensing device is selected not to have a power line tail, and at this time, for the 2V dc voltage of the battery unit, the power module of the battery data sensing device needs to further include a voltage boost circuit, and the voltage boost circuit is used to enable the output voltage of the battery unit to supply power to the battery data sensing device.
Preferably, the discharge device comprises a discharge instrument with an instrument end wireless communication module. Generally, the discharge instrument has a control processing module, and the instrument-side wireless communication module of the discharge instrument can be constructed by comparing the connection relationship between the wireless communication module and the control processing module shown in fig. 2 and 3.
Preferably, the number of the battery data sensing devices is more than or equal to the number of the battery units contained in the battery pack to be detected.
The use method of the battery pack discharge detection system comprises the following steps:
connecting the battery data sensing device with the battery unit to be tested, so that the battery data sensing device can measure the temperature of the battery unit to be tested and the voltage difference between the positive electrode and the negative electrode, and the battery unit to be tested can supply power for the corresponding battery data sensing device; if the battery data sensing device comprises a power taking clamp, the power taking clamp is firmly connected with the electrode of the battery unit to be tested;
the wireless communication is connected with the battery data sensing device and the discharging device, during the detection period, the battery data sensing device and the discharging device are in heartbeat communication, and the discharging device drives the alarm device to give an alarm when not receiving the communication signals of the battery data sensing device in at least two heartbeat communication periods.
The invention is described in detail above with reference to the figures and examples. It should be understood that in practice it is not intended to be exhaustive of all possible embodiments, and the inventive concepts herein are presented by way of illustration. Without departing from the inventive concept of the present invention and without any creative effort, a person skilled in the art should, in all of the embodiments, make optional combinations of technical features and experimental changes of specific parameters, or make a routine replacement of the disclosed technical means by using the prior art in the technical field to form a specific implementation manner, which belongs to the content implicitly disclosed by the present invention.
Claims (10)
1. A battery data sensing device is used for sensing the voltage difference and the temperature between the positive electrode and the negative electrode of a single battery unit and comprises a voltage sensor, a temperature sensor and a communication module; the voltage sensor is used for sensing the voltage difference of the battery unit and outputting a first signal encoded with voltage information; the temperature sensor is used for sensing the temperature of the battery unit and outputting a second signal encoded with temperature information; the communication module is composed of a sensing end wireless communication module so as to be capable of transmitting a third signal encoded with at least one of voltage information and temperature information; the battery unit is used for supplying power for the battery data sensing device.
2. The battery data sensing device of claim 1, further comprising a control processing module, wherein the sensing-end wireless communication module is embedded in the control processing module, or the sensing-end wireless communication module is electrically connected with the control processing module correspondingly.
3. The battery data sensing device of claim 1, further comprising a detachable electrical connection module comprising a power take-off clip, a clamping portion of the power take-off clip being provided with a clamping surface that mates with an electrode of the battery cell.
4. The battery data sensing device of claim 3, wherein the two clamping portions of the power take-off clip are configured to form a quincunx-head-shaped clamping surface.
5. The battery data sensing device of claim 3 or 4, wherein the clamping portion of the power harvesting clip is fixedly connected with a magnet, or wherein the clamping portion of the power harvesting clip comprises an electrically conductive magnet.
6. A battery pack discharge detection system comprises a discharge device and a battery data sensing device, and is characterized by further comprising an alarm device, wherein the battery data sensing device is used for being in wireless communication connection with the discharge device, and the alarm device is used for outputting an alarm when the battery data sensing device detects that the battery data sensing device is in communication interruption with the discharge device and is in a detection period; the battery data sensing device is used for sensing the voltage difference between the positive electrode and the negative electrode and the temperature of a single battery unit, and the single battery unit is used for supplying power to the battery data sensing device.
7. The battery pack discharge detection system of claim 6 wherein the battery data sensing device comprises a power module including a boost circuit for enabling the output voltage of the battery cell to power the battery data sensing device.
8. The battery pack discharge detection system of claim 6 wherein the discharge device comprises a discharge meter with an instrument-side wireless communication module.
9. The battery pack discharge detection system of claim 6, wherein the number of battery data sensing devices is greater than or equal to the number of blocks of battery cells contained in the battery pack to be detected.
10. Use of a battery discharge detection system according to any of claims 6-9, characterized in that it comprises the following steps: during the detection period, the battery data sensing device is in heartbeat communication with the discharging device, and the discharging device drives the alarm device to give an alarm when not receiving the communication signal of the battery data sensing device in at least two heartbeat communication periods.
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| CN202010831943.4A CN111948551A (en) | 2020-08-18 | 2020-08-18 | Battery data sensing device, battery pack discharge detection system and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010831943.4A CN111948551A (en) | 2020-08-18 | 2020-08-18 | Battery data sensing device, battery pack discharge detection system and use method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261217A (en) * | 2000-02-28 | 2000-07-26 | 北京科锐配电自动化技术有限公司 | Switch cabinet |
| CN202679005U (en) * | 2012-06-05 | 2013-01-16 | 华自科技股份有限公司 | DC system multifunctional charging-feeding supervising device |
| CN203398236U (en) * | 2013-07-31 | 2014-01-15 | 北京嘉捷恒信能源技术有限责任公司 | Online battery monitoring detection and maintenance device |
| CN104914383A (en) * | 2015-06-26 | 2015-09-16 | 双竞科技有限公司 | Battery health condition detection module, system thereof and battery with detection module |
| CN208805545U (en) * | 2018-05-28 | 2019-04-30 | 韶关市武江区冠启自动化设备设计有限公司 | A kind of loop resistance test device |
-
2020
- 2020-08-18 CN CN202010831943.4A patent/CN111948551A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261217A (en) * | 2000-02-28 | 2000-07-26 | 北京科锐配电自动化技术有限公司 | Switch cabinet |
| CN202679005U (en) * | 2012-06-05 | 2013-01-16 | 华自科技股份有限公司 | DC system multifunctional charging-feeding supervising device |
| CN203398236U (en) * | 2013-07-31 | 2014-01-15 | 北京嘉捷恒信能源技术有限责任公司 | Online battery monitoring detection and maintenance device |
| CN104914383A (en) * | 2015-06-26 | 2015-09-16 | 双竞科技有限公司 | Battery health condition detection module, system thereof and battery with detection module |
| CN208805545U (en) * | 2018-05-28 | 2019-04-30 | 韶关市武江区冠启自动化设备设计有限公司 | A kind of loop resistance test device |
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Application publication date: 20201117 |