CN116879827A

CN116879827A - Real-time voltage calibration system and method

Info

Publication number: CN116879827A
Application number: CN202311072537.4A
Authority: CN
Inventors: 贾小林通; 肖迪; 王亮; 何小月
Original assignee: Wuhan Lixing Technology Co ltd
Current assignee: Wuhan Lixing Technology Co ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2023-10-13

Abstract

The invention relates to the technical field of battery testing, and discloses a real-time voltage calibration system and method. The system comprises: the battery test equipment comprises a change-over switch; the voltage acquisition loop is respectively connected with the battery to be tested and the battery testing equipment and is used for acquiring the battery voltage of the battery to be tested when the battery to be tested is communicated with the battery testing equipment through the voltage acquisition loop and the change-over switch; a calibration source; and the calibration loop is connected with the calibration source and the battery test equipment respectively, is connected with the voltage acquisition loop in parallel and is used for carrying out real-time voltage calibration on the battery test equipment when the calibration source is communicated with the battery test equipment through the calibration loop and the change-over switch. According to the invention, the voltage acquisition loop is connected with the calibration loop connected to the calibration source in parallel, the change-over switch is connected to the calibration loop for calibration when the calibration is needed, the test and the calibration are realized through the rapid switching of the voltage acquisition loop and the calibration loop, and the calibration is carried out after the test is not needed to be stopped additionally.

Description

Real-time voltage calibration system and method

Technical Field

The invention relates to the technical field of battery testing, in particular to a real-time voltage calibration system and method.

Background

With the rapid development of new energy technology, the performance of new energy related products is continuously improved, the capacity of batteries serving as core components of the new energy technology is rapidly expanded, and the demands on the production and test equipment of the batteries are rapidly increased. For the battery test industry, the battery test equipment needs to be calibrated before shipment and after installation, and the battery test equipment needs to be calibrated regularly in the production of batteries so as to ensure that the working range of the battery test equipment meets the precision requirement range, otherwise, the performance of the batteries is affected.

Aiming at the calibration of battery testing equipment, the battery testing equipment in the traditional mode needs to stop testing when the calibration is needed, a great amount of calibration time needs to be consumed to cause the delay of testing work, and the need to stop testing when the battery testing equipment is calibrated is a problem to be solved urgently.

The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.

Disclosure of Invention

The invention mainly aims to provide a real-time voltage calibration system and a real-time voltage calibration method, and aims to solve the technical problem that test work is delayed due to the fact that test is stopped when calibration is needed each time and calibration time is consumed in the conventional battery test equipment.

To achieve the above object, the present invention provides a real-time voltage calibration system, comprising:

the battery test equipment comprises a change-over switch;

the voltage acquisition loop is respectively connected with the battery to be tested and the battery testing equipment and is used for acquiring the battery voltage of the battery to be tested when the battery to be tested is communicated with the battery testing equipment through the voltage acquisition loop and the change-over switch;

a calibration source;

and the calibration loop is respectively connected with the calibration source and the battery test equipment, is connected with the voltage acquisition loop in parallel and is used for carrying out real-time voltage calibration on the battery test equipment when the calibration source is communicated with the battery test equipment through the calibration loop and the change-over switch.

In some embodiments, the battery test apparatus further comprises a control unit connected to the switch; wherein,,

the control unit is used for connecting the change-over switch to the calibration loop through a first control signal;

the control unit is also used for connecting the change-over switch to the voltage acquisition loop through a second control signal.

In some embodiments, the change-over switch comprises a first switch and a second switch; wherein,,

the fixed contact of the first switch is connected with the control unit of the battery test equipment, and the movable contact of the first switch is connected with the positive electrode of the voltage acquisition loop or the positive electrode of the calibration loop;

the fixed contact of the second switch is connected with the control unit of the battery test equipment, and the movable contact of the second switch is connected with the negative electrode of the voltage acquisition loop or the negative electrode of the calibration loop.

In some embodiments, the control unit is further connected to the calibration source for acquiring a calibration signal actual voltage of the calibration source;

the control unit is further configured to collect a current calibration voltage of the calibration source when the calibration source is communicated with the control unit through the calibration loop and the change-over switch, compare the current calibration voltage with an actual voltage of the calibration signal, and calibrate the battery test device in real time according to a comparison result.

In some embodiments, the control unit is further configured to determine a magnitude relation between the current calibration voltage and the actual voltage of the calibration signal according to a comparison result;

and when the current calibration voltage is not equal to the actual voltage of the calibration signal, adjusting the voltage value of the current calibration voltage to the voltage value of the actual voltage of the calibration signal according to the calibration parameter.

In some embodiments, the number of the battery test devices is at least two, the number of the voltage acquisition loops corresponds to the number of the battery test devices one by one, and the number of the calibration loops corresponds to the number of the battery test devices one by one;

the calibration source is one, and the calibration loops are respectively connected with the calibration source.

In addition, in order to achieve the above objective, the present invention further provides a real-time voltage calibration method, which includes:

when a battery to be tested is communicated with battery testing equipment through a voltage acquisition loop and a change-over switch, acquiring the battery voltage of the battery to be tested;

when a calibration source is communicated with the battery test equipment through a calibration loop and a change-over switch, performing real-time voltage calibration on the battery test equipment; wherein, the calibration loop is connected in parallel with the voltage acquisition loop.

In some embodiments, the battery test apparatus further comprises a control unit connected to the switch;

the method further comprises the steps of:

the control unit connects the change-over switch to the calibration loop through a first control signal;

the control unit connects the change-over switch to the voltage acquisition loop through a second control signal.

In some embodiments, the method further comprises:

the control unit acquires the actual voltage of the calibration signal of the calibration source;

collecting the current calibration voltage of the calibration source when the calibration source is communicated with the control unit through the calibration loop and the change-over switch;

and comparing the current calibration voltage with the actual voltage of the calibration signal, and performing real-time voltage calibration on the battery test equipment according to a comparison result.

In some embodiments, the performing real-time voltage calibration on the battery test device according to the comparison result includes:

determining the magnitude relation between the current calibration voltage and the actual voltage of the calibration signal according to the comparison result;

The invention provides a real-time voltage calibration system, comprising: the battery test equipment comprises a change-over switch; the voltage acquisition loop is respectively connected with the battery to be tested and the battery testing equipment and is used for acquiring the battery voltage of the battery to be tested when the battery to be tested is communicated with the battery testing equipment through the voltage acquisition loop and the change-over switch; a calibration source; and the calibration loop is respectively connected with the calibration source and the battery test equipment, is connected with the voltage acquisition loop in parallel and is used for carrying out real-time voltage calibration on the battery test equipment when the calibration source is communicated with the battery test equipment through the calibration loop and the change-over switch. According to the invention, the calibration loop connected to the calibration source is connected in parallel on the voltage acquisition loop, when the voltage calibration is required to be carried out on the battery test equipment, the calibration voltage is acquired by controlling the change-over switch to be connected to the calibration loop, and then the voltage of the battery to be tested is acquired by connecting the change-over switch to the battery to be tested, so that the battery test equipment can be calibrated when the battery test is carried out through the rapid switching of the voltage acquisition loop and the calibration loop, the calibration is carried out without additionally stopping the test, the voltage of the battery test equipment is calibrated under the condition of not delaying the test flow, and the technical problem that the test work is delayed due to the fact that the test is required to be stopped when the calibration is required each time of the conventional battery test equipment is solved. In addition, because battery test equipment calibration can be performed during battery test, the calibration mode of the real-time voltage calibration system can eliminate the influence caused by the difference between the calibration environment and the use environment, and improve the accuracy of voltage acquisition.

Drawings

FIG. 1 is a schematic diagram of a conventional voltage calibration system;

FIG. 2 is a schematic diagram of a real-time voltage calibration system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a second configuration of a real-time voltage calibration system according to an embodiment of the present invention;

FIG. 4 is a flow chart of a real-time voltage calibration method according to an embodiment of the invention.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1, fig. 1 is a schematic diagram of a conventional voltage calibration system. As shown in fig. 1, in the conventional battery test apparatus, the calibration system uses the ammeter to calibrate the current of the battery test apparatus to conform to the accuracy (as shown in the left schematic diagram of fig. 1), and then uses the calibration loop and the voltmeter to calibrate the voltage on the premise of ensuring the accuracy of the current (as shown in the right schematic diagram of fig. 1). The calibration system needs to rely on a calibration loop to calibrate, and the test loop of the battery test equipment needs to be disconnected depending on the calibration loop, namely the battery test equipment needs to stop testing to calibrate.

However, the battery test device stops testing when the battery test device needs to be calibrated every time, a great amount of calibration time is consumed to cause a delay of test work, and in addition, the calibration environment and the test environment also have differences to cause the reduction of the precision of voltage acquisition, so that the working accuracy of the battery test device is affected.

In view of the above, the present invention provides a real-time voltage calibration system and method.

Referring to fig. 2, fig. 2 is a first structural schematic diagram of a real-time voltage calibration system according to an embodiment of the present invention.

As shown in fig. 2, the real-time voltage calibration system includes:

a battery test apparatus 100 including a changeover switch K;

the voltage acquisition circuit 200 is respectively connected with the battery to be tested and the battery testing equipment 100 and is used for acquiring the battery voltage of the battery to be tested when the battery to be tested is communicated with the battery testing equipment 100 through the voltage acquisition circuit 200 and the change-over switch K;

a calibration source 300;

and the calibration loop 400 is respectively connected with the calibration source 300 and the battery test equipment 100, and the calibration loop 400 is connected with the voltage acquisition loop 200 in parallel and is used for carrying out real-time voltage calibration on the battery test equipment 100 when the calibration source 300 is communicated with the battery test equipment 100 through the calibration loop 400 and the change-over switch K.

Calibration for battery test equipment is conventionally required for voltage value calibration and current value calibration. The embodiment is described by taking real-time voltage calibration of battery test equipment as an example, and is suitable for calibration processes of various battery test equipment requiring precise electric signals.

In implementations, the calibration source 300 is an isolated island calibration source, and the calibration source 300 is not directly electrically connected to any component in the real-time voltage calibration system when not in operation. In one example, as shown in FIG. 3, a plurality of battery test apparatuses 100 are connected to a calibration source 300, the calibration source 300 operating in a serial system of a plurality of battery test apparatuses 100, the calibration source 300 calibrating one of the battery test apparatuses 100 in a single calibration process.

Specifically, a calibration loop 400 connected to the calibration source 300 is connected in parallel to the voltage acquisition loop 200, and when voltage calibration is required to be performed on the battery test equipment, the voltage acquisition loop 200 and the calibration loop 400 are rapidly switched by controlling to connect the switch K to the calibration loop 400 to acquire the calibration voltage and then connecting the switch K to the battery to be tested to acquire the battery voltage of the battery to be tested. It can be understood that the fast switching of the voltage acquisition circuit 200 and the calibration circuit 400 is achieved by the switch K to obtain the battery voltage of the battery to be tested while (not at the same time in the strict microcosmic sense), and the acquisition of the battery voltage and the acquisition of the calibration voltage are achieved almost simultaneously in a very short time, without breaking the test circuit of the battery test device, so that the voltage of the battery test device can be calibrated without delaying the test flow.

Illustratively, the battery test device automatically switches between a channel for collecting the battery voltage and a channel for calibrating the voltage by the switch K, and the work type is automatically switched by controlling the on-off of the switch K, so that the calibration loop 400 is fixed in the real-time voltage calibration system without external connection or manual wiring. The data is directly acquired and calculated and analyzed by the battery test equipment 100, and manual reading calculation is not needed, so that the calibration efficiency and quality of the battery test equipment are improved.

The present embodiment provides a real-time voltage calibration system, including: a battery test apparatus 100 including a changeover switch K; the voltage acquisition circuit 200 is respectively connected with the battery to be tested and the battery testing equipment 100 and is used for acquiring the battery voltage of the battery to be tested when the battery to be tested is communicated with the battery testing equipment 100 through the voltage acquisition circuit 200 and the change-over switch K; a calibration source 300; and the calibration loop 400 is respectively connected with the calibration source 300 and the battery test equipment 100, and the calibration loop 400 is connected with the voltage acquisition loop 200 in parallel and is used for carrying out real-time voltage calibration on the battery test equipment 100 when the calibration source 300 is communicated with the battery test equipment 100 through the calibration loop 400 and the change-over switch K. In this embodiment, a calibration loop connected to a calibration source is connected in parallel to a voltage acquisition loop, when voltage calibration needs to be performed on battery test equipment, a change-over switch is controlled to be connected to the calibration loop to acquire calibration voltage, and then the change-over switch is controlled to be connected to a battery to be tested to acquire the voltage of the battery to be tested, so that the battery test equipment can be calibrated when the battery test is performed through quick switching of the voltage acquisition loop and the calibration loop, the calibration is performed after the test is not required to be additionally stopped, the voltage of the battery test equipment is calibrated under the condition of not delaying a test flow, and the technical problem that the test work is delayed when the test is required to be stopped every time when the calibration is required by the conventional battery test equipment is solved, and the calibration time is consumed. In addition, because battery test equipment calibration can be performed during battery test, the calibration mode of the real-time voltage calibration system can eliminate the influence caused by the difference between the calibration environment and the use environment, and improve the accuracy of voltage acquisition.

In an embodiment, referring to fig. 2, the battery testing apparatus 100 further includes a control unit 101 connected to the switch K; wherein,,

the control unit 101 is configured to connect the switch K to the calibration loop 400 through a first control signal;

the control unit 101 is further configured to connect the switch K to the voltage acquisition loop 200 through a second control signal.

It should be noted that the battery test apparatus 100 further includes a control unit 101 connected to the switch K, where the switch K is a combination switch for switching the multi-loop, and changing the circuit from one channel connection to another channel connection, and illustratively switches the voltage acquisition loop 200 and the calibration loop 400. The switch K is used for switching the calibration item and the test item, the control unit 101 is used for controlling the channel connected with the switch K, controlling the on-off of the switch K, receiving the measurement data and analyzing and processing. In the specific implementation, the selection of the change-over switch K and the control unit 101 that can realize this function is not limited to what model.

In an embodiment, referring to fig. 2, the switch K includes a first switch K1 and a second switch K2; wherein,,

the fixed contact of the first switch K1 is connected with the control unit 101 of the battery test device 100, and the movable contact of the first switch K1 is connected with the positive electrode of the voltage acquisition circuit 200 or the positive electrode of the calibration circuit 400;

the fixed contact of the second switch K2 is connected to the control unit 101 of the battery test device 100, and the movable contact of the second switch K2 is connected to the negative pole of the voltage detection circuit 200 or the negative pole of the calibration circuit 400.

It is understood that the switch K includes a first switch K1 and a second switch K2, and this embodiment is described taking the first switch K1 and the second switch K2 as single pole double throw switches as an example. The present embodiment does not limit the specific types of the first switch K1 and the second switch K2. The first switch K1 and the second switch K2 are exemplary switches for switching multiple circuits, and are provided with a fixed contact and a movable contact, wherein the movable contact can be connected with or disconnected from the positive electrode of the voltage acquisition circuit 200 or the stationary contact of the calibration circuit 400 during shaft rotation, so that the voltage acquisition circuit 200 and the calibration circuit 400 can be switched, and a circuit is changed from one channel connection to the other channel connection.

In an example, as shown in fig. 2, the fixed contact of the first switch K1 is connected to the control unit 101 of the battery test device 100, the movable contact of the first switch K1 is connected to the positive contact a1 of the voltage acquisition circuit 200, the fixed contact of the second switch K2 is connected to the control unit 101 of the battery test device 100, and the movable contact of the second switch K2 is connected to the negative contact a2 of the voltage acquisition circuit 200, and at this time, the battery to be tested is communicated with the battery test device 100 through the voltage acquisition circuit 200 and the switch K, so as to realize acquisition of the battery voltage of the battery to be tested.

In another example, as shown in fig. 2, the fixed contact of the first switch K1 is connected to the control unit 101 of the battery test device 100, the movable contact of the first switch K1 is connected to the positive contact b1 of the calibration circuit 400, the fixed contact of the second switch K2 is connected to the control unit 101 of the battery test device 100, the movable contact of the second switch K2 is connected to the negative contact b2 of the calibration circuit 400, and at this time, the calibration source 300 is in communication with the battery test device 100 through the calibration circuit 400 and the switch K, and the current calibration voltage is collected to calibrate the battery test device 100 in real time.

In an embodiment, referring to fig. 2, the control unit 101 is further connected to the calibration source 300, for acquiring an actual voltage of a calibration signal of the calibration source 300;

the control unit 101 is further configured to collect a current calibration voltage of the calibration source 300 when the calibration source 300 is in communication with the control unit 101 through the calibration loop 400 and the switch K, compare the current calibration voltage with the actual voltage of the calibration signal, and perform real-time voltage calibration on the battery test device 100 according to a comparison result.

Illustratively, as shown in fig. 2, this embodiment is described by taking an example that the control unit 101 is further connected to the calibration source 300, and the control unit 101 may collect the actual voltage of the calibration signal of the calibration source 300. It is to be understood that the control unit 101 may also collect the actual voltage of the calibration signal of the calibration source 300 by wireless communication, which is not limited in this embodiment.

In this embodiment, the calibration of 3.5V voltage is taken as an example, and the calibration source 300 may be selected according to the voltage to be calibrated in the specific implementation. To ensure that the battery test apparatus 100 collects the voltage accurately at 3.5V, the actual voltage of the calibration signal of the calibration source 300 is set to 3.5V, and the control unit 101 of the battery test apparatus 100 collects the actual voltage of the calibration signal of the calibration source 300 to 3.5V.

Specifically, when the calibration source 300 is in communication with the battery test apparatus 100 through the calibration loop 400 and the switch K, a current calibration voltage is collected through the calibration loop 400, the current calibration voltage is compared with the actual voltage of the calibration signal, and the battery test apparatus 100 is subjected to real-time voltage calibration according to the comparison result.

In an embodiment, the control unit 101 is further configured to determine a magnitude relation between the current calibration voltage and the actual voltage of the calibration signal according to a comparison result;

Illustratively, the actual voltage of the calibration signal of the calibration source 300 is set to 3.5V, and the control unit 101 of the battery test apparatus 100 collects the actual voltage of the calibration signal of the calibration source 300 to 3.5V. If the battery test device 100 collects, through the calibration loop 400, that the voltage value of the current calibration voltage is 3.501V, and compares the current calibration voltage 3.501V with the actual calibration signal voltage of 3.5V, the current calibration voltage 3.501V is greater than the actual calibration signal voltage of 3.5V, and the current calibration voltage is not equal to the actual calibration signal voltage. The voltage value 3.501V of the current calibration voltage is adjusted to be 3.5V of the actual voltage of the calibration signal by adjusting the calibration parameters, so that the collection accuracy of the battery test equipment 100 at 3.5V can be ensured.

In an embodiment, referring to fig. 3, the number of the battery test devices 100 is at least two, the number of the voltage acquisition circuits 200 is one-to-one corresponding to the number of the battery test devices 100, and the number of the calibration circuits 400 is one-to-one corresponding to the number of the battery test devices 100;

the calibration source 300 is one, and the calibration loops 400 are respectively connected to the calibration sources 300.

It will be appreciated that as shown in fig. 3, a plurality of battery test apparatuses 100 (more than two) are provided, each battery test apparatus 100 being connected to a battery to be tested through one voltage acquisition loop 200 and to a calibration source 300 through one calibration loop 400.

Specifically, the calibration source 300 is one, and each calibration loop 400 is connected to the calibration source 300. Taking calibration of 3.5V as an example, to ensure that the voltage collected by each battery test apparatus 100 is accurate at 3.5V, the actual voltage of the calibration signal of the calibration source 300 is set to 3.5V, and the actual voltage of the calibration signal of the calibration source 300 collected by the control unit 101 of each battery test apparatus 100 is set to 3.5V.

Illustratively, when the calibration source 300 communicates with the corresponding battery test apparatus 100 through each of the calibration loops 400 and the switch K, a current calibration voltage is collected through each of the calibration loops 400, the current calibration voltage is compared with an actual calibration signal voltage, and the battery test apparatus 100 is subjected to real-time voltage calibration according to the comparison result.

It should be noted that the calibration source 300 is one, and the multi-channel battery testing device 100 based on this may share one calibration signal (each calibration signal has the same actual voltage), so that the accuracy of voltage acquisition of the multi-channel battery testing device 100 may be kept consistent. Even if the calibration source 300 is deviated, the voltage accuracy of the plurality of battery test apparatuses 100 mounted to the same calibration source 300 can be realized with good uniformity.

The embodiment of the invention also provides a real-time voltage calibration method, and referring to fig. 4, fig. 4 is a flow chart of an embodiment of the real-time voltage calibration method of the invention.

As shown in fig. 4, the real-time voltage calibration method includes:

step S100: when a battery to be tested is communicated with battery testing equipment through a voltage acquisition loop and a change-over switch, acquiring the battery voltage of the battery to be tested;

step S200: when a calibration source is communicated with the battery test equipment through a calibration loop and a change-over switch, performing real-time voltage calibration on the battery test equipment; wherein, the calibration loop is connected in parallel with the voltage acquisition loop.

Calibration for battery test equipment is conventionally required for voltage value calibration and current value calibration. The present embodiment will be described by taking a real-time voltage calibration of a battery test apparatus as an example.

Specifically, the real-time voltage calibration method is described with reference to the real-time voltage calibration system shown in fig. 2: the calibration circuit 400 connected to the calibration source 300 is connected in parallel to the voltage acquisition circuit 200, when the voltage calibration is required to be performed on the battery test equipment, the calibration voltage is acquired by controlling the change-over switch K to be connected to the calibration circuit 400, and then the battery voltage of the battery to be tested is acquired by connecting the change-over switch K to the battery to be tested, so that the rapid switching between the voltage acquisition circuit 200 and the calibration circuit 400 is realized. It can be understood that the fast switching of the voltage acquisition circuit 200 and the calibration circuit 400 is achieved by the switch K to obtain the battery voltage of the battery to be tested while (not at the same time in the strict sense of microcosmic), that is, to obtain the battery voltage and to obtain the calibration voltage almost simultaneously in a very short time, without breaking the test circuit of the battery test device, so that the voltage of the battery test device can be calibrated without delaying the test flow.

In the embodiment, when a battery to be tested is communicated with battery testing equipment through a voltage acquisition loop and a change-over switch, acquiring the battery voltage of the battery to be tested; when a calibration source is communicated with the battery test equipment through a calibration loop and a change-over switch, performing real-time voltage calibration on the battery test equipment; wherein, the calibration loop is connected in parallel with the voltage acquisition loop. In this embodiment, a calibration loop connected to a calibration source is connected in parallel to a voltage acquisition loop, when voltage calibration needs to be performed on battery test equipment, a change-over switch is controlled to be connected to the calibration loop to acquire calibration voltage, and then the change-over switch is controlled to be connected to a battery to be tested to acquire the voltage of the battery to be tested, so that the battery test equipment can be calibrated when the battery test is performed through quick switching of the voltage acquisition loop and the calibration loop, the calibration is performed after the test is not required to be additionally stopped, the voltage of the battery test equipment is calibrated under the condition of not delaying a test flow, and the technical problem that the test work is delayed when the test is required to be stopped every time when the calibration is required by the conventional battery test equipment is solved, and the calibration time is consumed. In addition, because battery test equipment calibration can be performed during battery test, the calibration mode of the real-time voltage calibration system can eliminate the influence caused by the difference between the calibration environment and the use environment, and improve the accuracy of voltage acquisition.

In some embodiments, the battery test apparatus further comprises a control unit connected to the switch; the method further comprises the steps of: the control unit connects the change-over switch to the calibration loop through a first control signal; the control unit connects the change-over switch to the voltage acquisition loop through a second control signal.

It should be noted that, referring to fig. 2, the battery testing apparatus 100 further includes a control unit 101 connected to the switch K, where the switch K is a combination switch for switching the multi-loop, and changing the circuit from one channel connection to another channel connection, and illustratively switches the voltage acquisition loop 200 and the calibration loop 400. The switch K is used for switching the calibration item and the test item, the control unit 101 is used for controlling the channel connected with the switch K, controlling the on-off of the switch K, receiving the measurement data and analyzing and processing. In the specific implementation, the selection of the change-over switch K and the control unit 101 that can realize this function is not limited to what model.

In some embodiments, the method further comprises: the control unit acquires the actual voltage of the calibration signal of the calibration source; collecting the current calibration voltage of the calibration source when the calibration source is communicated with the control unit through the calibration loop and the change-over switch; and comparing the current calibration voltage with the actual voltage of the calibration signal, and performing real-time voltage calibration on the battery test equipment according to a comparison result.

In some embodiments, the performing real-time voltage calibration on the battery test device according to the comparison result includes: determining the magnitude relation between the current calibration voltage and the actual voltage of the calibration signal according to the comparison result; and when the current calibration voltage is not equal to the actual voltage of the calibration signal, adjusting the voltage value of the current calibration voltage to the voltage value of the actual voltage of the calibration signal according to the calibration parameter.

In addition, technical details not described in detail in the embodiment of the present real-time voltage calibration method may be referred to for application to the real-time voltage calibration system according to any embodiment of the present invention, which is not described herein.

It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.

It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.

Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

1. A real-time voltage calibration system, comprising:

the battery test equipment comprises a change-over switch;

a calibration source;

2. The real-time voltage calibration system of claim 1, wherein the battery testing device further comprises a control unit coupled to the switch; wherein,,

3. The real-time voltage calibration system of claim 2, wherein the change-over switch comprises a first switch and a second switch; wherein,,

4. The real-time voltage calibration system of claim 2, wherein the control unit is further coupled to the calibration source for collecting a calibration signal actual voltage of the calibration source;

5. The real-time voltage calibration system according to claim 4, wherein the control unit is further configured to determine a magnitude relation between the current calibration voltage and an actual voltage of the calibration signal according to a comparison result;

6. The real-time voltage calibration system of claim 1, wherein the number of the battery test devices is at least two, the number of the voltage acquisition loops is one-to-one corresponding to the number of the battery test devices, and the number of the calibration loops is one-to-one corresponding to the number of the battery test devices;

7. A real-time voltage calibration method, comprising:

8. The method of real time voltage calibration according to claim 7, wherein the battery test apparatus further comprises a control unit connected to the change-over switch;

the method further comprises the steps of:

9. The method of real-time voltage calibration of claim 8, further comprising:

10. The method for real-time voltage calibration according to claim 9, wherein said performing real-time voltage calibration on said battery test device according to the comparison result comprises: