CN114859246B - Soft package battery detection method and device, computer equipment and storage medium - Google Patents
Soft package battery detection method and device, computer equipment and storage medium Download PDFInfo
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- CN114859246B CN114859246B CN202210791371.0A CN202210791371A CN114859246B CN 114859246 B CN114859246 B CN 114859246B CN 202210791371 A CN202210791371 A CN 202210791371A CN 114859246 B CN114859246 B CN 114859246B
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The application provides a soft package battery detection method, a soft package battery detection device, computer equipment and a storage medium, wherein when a first detection circuit is conducted, whether the voltage value of the positive electrode side of a soft package battery to be detected rises from zero to a first preset threshold value at a first preset time point is judged, and whether the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within a first preset time range is judged, wherein the first detection circuit is used for measuring the voltage value of the positive electrode side of the soft package battery in real time; and if the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range, marking the soft package battery to be detected as a good battery. By adopting the method, the battery state of the soft package battery can be determined.
Description
Technical Field
The invention relates to the field of circuit battery detection, in particular to a soft package battery detection method and device, computer equipment and a storage medium.
Background
The soft package battery is a battery with an aluminum-plastic packaging film as a shell, and has the advantages of good safety, light weight, high energy density, good electrochemical performance and long service life, so more and more users tend to use the soft package battery as a power supply source to drive the equipment; before a user uses the soft package battery as a power supply source to drive the equipment, the external structure of the soft package battery is usually observed, and the equipment is driven by using the battery with the complete external physical structure.
The inventor finds in research that some pouch batteries with complete external structures but broken inside cannot normally supply power to equipment, and a user cannot know whether the inside of the battery is broken or not when observing the external structures of the battery, so that the battery state of the pouch battery cannot be determined.
Disclosure of Invention
In view of this, the present invention provides a pouch battery detection method, a pouch battery detection device, a computer device, and a storage medium, which are capable of determining a battery state of a pouch battery.
In a first aspect, an embodiment of the present application provides a method for detecting a pouch battery, where the method includes:
when the first detection circuit is conducted, judging whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to a first preset threshold value at a first preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery to be detected is attenuated from the first preset threshold value to zero within a first preset time range, wherein the first detection circuit is used for measuring the voltage value of the positive electrode side of the soft package battery in real time;
and if the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range, marking the soft package battery to be detected as a good battery.
Optionally, after determining whether the voltage value of the positive electrode side of the pouch battery to be detected rises from zero to a first preset threshold at a first preset time point, and determining whether the voltage value of the positive electrode side of the pouch battery to be detected decays from the first preset threshold to zero within a first preset time range, the method further includes:
and if the voltage value of the positive electrode side of the soft package battery to be detected does not rise to the first preset threshold value from zero at the first preset time point, and/or the voltage value of the positive electrode side of the soft package battery to be detected does not decay to zero from the first preset threshold value within the first preset time range, marking the soft package battery to be detected as a non-good soft package battery.
Optionally, after the pouch battery to be detected is marked as a defective pouch battery, the method further includes:
judging whether the voltage value of the positive electrode side of the soft package battery with the unqualified product rises from zero to the first preset threshold value at a second preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery with the unqualified product decays from the first preset threshold value to zero within a second preset time range, wherein the second preset time range is larger than the first preset time range;
and if the voltage value of the positive electrode side of the soft package battery of the unqualified product rises from zero to the first preset threshold value at the second preset time point, and the voltage value of the positive electrode side of the soft package battery of the unqualified product is attenuated from the first preset threshold value to zero within the second preset time range, marking the reason for the unqualified product of the soft package battery of the unqualified product as the damage of the polypropylene layer of the battery.
Optionally, after the pouch battery to be detected is marked as a defective pouch battery, the method further includes:
judging whether the voltage value of the positive electrode side of the soft package battery in the non-defective products rises from zero to the voltage value of the soft package battery in the non-defective products at a third preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery in the non-defective products is attenuated before the first detection circuit is disconnected;
if the voltage value of the positive electrode side of the non-defective soft package battery rises from zero to the voltage value of the non-defective soft package battery at the third preset time point, and the voltage value of the positive electrode side of the non-defective soft package battery does not undergo voltage attenuation before the first detection circuit is switched off, judging whether the voltage value of the negative electrode side of the non-defective soft package battery rises from zero to the voltage value of the non-defective soft package battery at the fourth preset time point when the second detection circuit is switched on, and judging whether the voltage value of the negative electrode side of the non-defective soft package battery decays from the voltage value of the battery to zero within the fourth preset time range, wherein the second detection circuit is used for measuring the voltage value of the negative electrode side of the soft package battery in real time;
and if the voltage value of the negative electrode side of the soft package battery in the non-good product rises from zero to the voltage value of the soft package battery in the non-good product at the fourth preset time point, and the voltage value of the negative electrode side of the soft package battery in the non-good product is attenuated to zero from the voltage value of the battery within the fourth preset time range, the reason for the non-good product of the soft package battery in the non-good product is marked as the conduction of a battery tab.
Optionally, after the pouch battery to be detected is marked as a defective pouch battery, the method further includes:
judging whether the voltage value of the positive electrode side of the soft package battery as the defective product rises from zero to a first voltage value at a fifth preset time point or not, and judging whether the voltage value of the positive electrode side of the soft package battery as the defective product is attenuated before the first detection circuit is disconnected or not, wherein the first voltage value is smaller than the voltage value of the soft package battery as the defective product;
if the voltage value of the positive electrode side of the non-good product soft package battery rises from zero to the first voltage value at the fifth preset time point, and the voltage value of the positive electrode side of the non-good product soft package battery does not undergo voltage attenuation before the first detection circuit is disconnected, judging whether the voltage value of the negative electrode side of the non-good product soft package battery is a second voltage value or not when a second detection circuit is switched on, and judging whether the voltage value of the negative electrode side of the non-good product soft package battery undergoes voltage attenuation before the second detection circuit is disconnected, wherein the second detection circuit is used for measuring the voltage value of the negative electrode side of the non-good product soft package battery in real time, and the second voltage value is a difference value between the voltage value of the non-good product soft package battery and the voltage value of the positive electrode side of the non-good product soft package battery;
and if the voltage value of the negative electrode side of the soft package battery in the non-good products is the second voltage value and the voltage value of the negative electrode side of the soft package battery in the non-good products is not attenuated before the second detection circuit is disconnected, marking the reason of the non-good products of the soft package battery in the non-good products as battery leakage.
In a second aspect, the embodiment of the present application provides a pouch battery detection device, the device includes:
the first judging module is used for judging whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to a first preset threshold value at a first preset time point when the first detecting circuit is switched on, and judging whether the voltage value of the positive electrode side of the soft package battery to be detected is attenuated from the first preset threshold value to zero within a first preset time range, wherein the first detecting circuit is used for measuring the voltage value of the positive electrode side of the soft package battery in real time;
and the first marking module is used for marking the soft package battery to be detected as a good battery if the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range.
Optionally, the apparatus further comprises:
and the second marking module is used for marking the soft package battery to be detected as a non-defective soft package battery if the positive side voltage value of the soft package battery to be detected does not rise from zero to the first preset threshold value at the first preset time point and/or the positive side voltage value of the soft package battery to be detected does not decay from the first preset threshold value to zero within the first preset time range after judging whether the positive side voltage value of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point or not and judging whether the positive side voltage value of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range or not.
Optionally, the apparatus further comprises:
the second judging module is used for judging whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at a second preset time point after the soft package battery to be detected is marked as a non-qualified soft package battery, and judging whether the voltage value of the positive electrode side of the non-qualified soft package battery decays from the first preset threshold value to zero within a second preset time range, wherein the second preset time range is larger than the first preset time range;
and the third marking module is used for marking the defective product reason of the defective product soft package battery as a battery polypropylene layer damage if the voltage value of the positive electrode edge of the defective product soft package battery is in the second preset time point, the voltage value of the positive electrode edge of the defective product soft package battery is increased from zero to the first preset threshold value, and the voltage value of the positive electrode edge of the defective product soft package battery is in the second preset time range, and the voltage value of the positive electrode edge of the defective product soft package battery is attenuated from the first preset threshold value to zero.
Optionally, the apparatus further comprises:
the third judging module is used for judging whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the voltage value of the soft package battery to be unqualified at a third preset time point after the soft package battery to be detected is marked as the soft package battery to be unqualified, and judging whether the voltage value of the positive electrode side of the soft package battery to be unqualified is attenuated before the first detecting circuit is disconnected;
a fourth judging module, configured to, if the voltage value of the positive electrode side of the non-good-product soft package battery rises from zero to the voltage value of the non-good-product soft package battery at the third preset time point, and the voltage value of the positive electrode side of the non-good-product soft package battery does not undergo voltage attenuation before the first detection circuit is turned off, judge, when the second detection circuit is turned on, whether the voltage value of the negative electrode side of the non-good-product soft package battery rises from zero to the voltage value of the non-good-product soft package battery at the fourth preset time point, and judge whether the voltage value of the negative electrode side of the non-good-product soft package battery attenuates from the voltage value of the battery to zero within the fourth preset time range, where the second detection circuit is configured to measure the voltage value of the negative electrode side of the soft package battery in real time;
and the fourth marking module is used for increasing the voltage value of the negative electrode edge of the soft package battery of the non-good product from zero to the voltage value of the soft package battery of the non-good product at a fourth preset time point, and marking the reason of the non-good product of the soft package battery of the non-good product as the conduction of a battery tab if the voltage value of the negative electrode edge of the soft package battery of the non-good product is within the fourth preset time range from the attenuation of the voltage value of the battery to zero.
Optionally, the apparatus further comprises:
a fifth judging module, configured to judge whether a voltage value of a positive electrode edge of the non-good product pouch battery rises from zero to a first voltage value at a fifth preset time point, and judge whether a voltage attenuation occurs to the voltage value of the positive electrode edge of the non-good product pouch battery before the first detecting circuit is turned off, where the first voltage value is smaller than a battery voltage value of the non-good product pouch battery;
a sixth judging module, configured to, if the voltage value of the positive electrode side of the non-good-product soft package battery rises from zero to the first voltage value at the fifth preset time point, and the voltage value of the positive electrode side of the non-good-product soft package battery does not undergo voltage attenuation before the first detecting circuit is turned off, judge, when the second detecting circuit is turned on, whether the voltage value of the negative electrode side of the non-good-product soft package battery is the second voltage value, and judge whether the voltage value of the negative electrode side of the non-good-product soft package battery undergoes voltage attenuation before the second detecting circuit is turned off, where the second detecting circuit is configured to measure the voltage value of the negative electrode side of the soft package battery in real time, and the second voltage value is a difference between the voltage value of the non-good-product soft package battery and the voltage value of the positive electrode side of the non-good-product soft package battery;
and the fifth marking module is used for marking the defective product reason of the defective product soft package battery as battery leakage if the voltage value of the negative electrode edge of the defective product soft package battery is the second voltage value and the voltage attenuation does not occur before the second detection circuit is disconnected.
In a third aspect, an embodiment of the present application provides a computer device, including: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when a computer device runs, the processor and the memory communicate with each other through the bus, and when the machine-readable instructions are executed by the processor, the processor performs the steps of the pouch cell detection method described in any one of the optional implementation manners of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, where the computer program is executed by a processor to perform the steps of the pouch battery detection method described in any one of the optional embodiments of the first aspect.
The technical scheme provided by the application comprises but is not limited to the following beneficial effects:
when the first detection circuit is conducted, judging whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to a first preset threshold value at a first preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery to be detected is attenuated from the first preset threshold value to zero within a first preset time range, wherein the first detection circuit is used for measuring the voltage value of the positive electrode side of the soft package battery in real time; if the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected is attenuated from the first preset threshold value to zero within the first preset time range, marking the soft package battery to be detected as a good battery; by adopting the method, the battery state of the soft package battery can be determined by acquiring the change condition of the voltage of the soft package battery to be detected along with time and analyzing the acquired voltage change condition.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 shows a flowchart of a pouch battery detection method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a variation of a positive-electrode-side voltage value of a good battery according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for marking a cause of non-defective products according to a first embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a variation of a positive electrode edge voltage value of a damaged battery with a polypropylene layer according to an embodiment of the invention;
fig. 5 is a flowchart illustrating another method for marking a non-defective product reason according to a first embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a variation of a positive side voltage value of a tab-connected battery according to a first embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a variation of a voltage value of a negative electrode of a tab-connected battery according to a first embodiment of the present invention;
fig. 8 is a flowchart illustrating another method for marking a cause of non-defective products according to an embodiment of the present invention;
fig. 9 is a schematic diagram illustrating a variation of a positive-electrode-side voltage value of a leakage battery according to a first embodiment of the present invention;
fig. 10 is a schematic diagram illustrating a variation of a voltage value of a negative electrode side of a leakage battery according to a first embodiment of the present invention;
fig. 11 shows a schematic structural diagram of a pouch battery detection device according to a second embodiment of the present invention;
fig. 12 is a schematic structural diagram of another pouch battery detection device provided in the second embodiment of the present invention;
fig. 13 is a schematic structural diagram of another pouch battery detection device provided in the second embodiment of the present invention;
fig. 14 is a schematic structural diagram of another pouch battery detection device provided in the second embodiment of the present invention;
fig. 15 is a schematic structural diagram of another pouch battery detection device provided in the second embodiment of the present invention;
fig. 16 shows a schematic structural diagram of a computer device according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example one
For the convenience of understanding of the present application, the following describes in detail an embodiment of the present application with reference to a content described in a flowchart of a pouch battery detection method provided in the embodiment of the present invention shown in fig. 1.
Referring to fig. 1, fig. 1 shows a flowchart of a pouch battery detection method according to a first embodiment of the present invention, where the method includes steps S101 to S102:
s101: when the first detection circuit is conducted, whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to a first preset threshold value at a first preset time point or not is judged, and whether the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within a first preset time range or not is judged, wherein the first detection circuit is used for measuring the voltage value of the positive electrode side of the soft package battery in real time.
Specifically, before the first detection circuit is switched on, the voltage value of the positive electrode side of the soft package battery to be detected is 0V, after the first detection circuit is switched on, the voltage value of the positive electrode side of the soft package battery to be detected within 0.5 s-5 s is continuously collected, and if the voltage value of the positive electrode side is not collected, the voltage value of the negative electrode side of the soft package battery to be detected is collected and then the voltage value of the positive electrode side is collected again.
When the first detection circuit is switched on, whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to a first preset threshold value (the range is 2-4, the voltage unit is volt) at a first preset time point (the moment when the first detection circuit is just switched from non-conduction to conduction), and the voltage value of the positive electrode side of the soft package battery to be detected is attenuated from the first preset threshold value to zero within a first preset time range (400 ms-600 ms after the first detection circuit is switched on), wherein the first detection circuit is used for measuring the voltage value of the positive electrode side of the soft package battery in real time.
S102: and if the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range, marking the soft package battery to be detected as a good battery.
Specifically, if the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected is attenuated from the first preset threshold value to zero within the first preset time range, the soft package battery to be detected is marked as a good battery; referring to fig. 2, fig. 2 is a schematic diagram illustrating a variation of the positive-electrode-side voltage value of a good battery according to an embodiment of the present invention, where the variation is a two-dimensional coordinate system with time as a horizontal axis and a voltage value as a vertical axis, the positive-electrode-side voltage value of the good battery rises from 0 to the first preset threshold at the first preset time point, and the positive-electrode-side voltage value of the good battery decays from the first preset threshold to 0 within the first preset time range.
In a possible embodiment, after determining whether the positive voltage value of the pouch battery to be detected rises from zero to a first preset threshold at a first preset time point, and determining whether the positive voltage value of the pouch battery to be detected decays from the first preset threshold to zero within a first preset time range, the method includes:
and if the voltage value of the positive electrode side of the soft package battery to be detected does not rise to the first preset threshold value from zero at the first preset time point, and/or the voltage value of the positive electrode side of the soft package battery to be detected does not decay to zero from the first preset threshold value within the first preset time range, marking the soft package battery to be detected as a non-good soft package battery.
Specifically, when any one of the following conditions is met, the to-be-detected soft package battery is marked as a non-qualified soft package battery:
the first condition is as follows: the voltage value of the positive electrode side of the soft package battery to be detected does not rise to the first preset threshold value from zero at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected does not decay to zero from the first preset threshold value within the first preset time range.
And a second condition: the voltage value of the positive pole side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive pole side of the soft package battery to be detected does not decay from the first preset threshold value to zero within the first preset time range.
Case three: the voltage value of the positive electrode side of the soft package battery to be detected does not rise from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range.
In a possible implementation, referring to fig. 3, fig. 3 shows a flowchart of a method for marking a defective product reason according to a first embodiment of the present invention, where after the pouch battery to be detected is marked as a defective pouch battery, the method includes steps S301 to S302:
s301: and judging whether the voltage value of the positive electrode side of the soft package battery as the defective product rises from zero to the first preset threshold value at a second preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery as the defective product decays from the first preset threshold value to zero within a second preset time range, wherein the second preset time range is greater than the first preset time range.
Specifically, whether the voltage value of the positive electrode side of the soft package battery as a non-good product rises from zero to the first preset threshold value (the range is 2-4, the voltage unit is volt) at a second preset time point (the instant when the first detection circuit is just switched from non-conduction to conduction) is judged, and the voltage value of the positive electrode side of the soft package battery as a non-good product is attenuated to zero from the first preset threshold value within a second preset time range (after 1s after the first detection circuit is switched on), wherein the second preset time range is larger than the first preset time range.
S302: and if the voltage value of the positive electrode side of the soft package battery of the unqualified product rises from zero to the first preset threshold value at the second preset time point, and the voltage value of the positive electrode side of the soft package battery of the unqualified product is attenuated from the first preset threshold value to zero within the second preset time range, marking the reason for the unqualified product of the soft package battery of the unqualified product as the damage of the polypropylene layer of the battery.
Specifically, if the voltage value of the positive electrode side of the non-defective soft package battery rises from zero to the first preset threshold value at the second preset time point, and the voltage value of the positive electrode side of the non-defective soft package battery decays from the first preset threshold value to zero within the second preset time range, the cause of the non-defective soft package battery is marked as the damage of the polypropylene layer of the battery; referring to fig. 4, fig. 4 is a schematic diagram illustrating a variation of a positive voltage value of a damaged polypropylene layer battery according to an embodiment of the present invention, where the schematic diagram is a two-dimensional coordinate system with time as a horizontal axis and a voltage value as a vertical axis, the positive voltage value of the damaged polypropylene layer battery rises from 0 to the first preset threshold at the second preset time point, and the positive voltage value of the damaged polypropylene layer battery decays from the first preset threshold to 0 within the second preset time range, where the second preset time range is greater than the first preset time range.
In a possible implementation, referring to fig. 5, fig. 5 shows a flowchart of another defective product reason marking method provided in an embodiment of the present invention, where after the to-be-detected soft package battery is marked as a defective soft package battery, the method includes steps S501 to S503:
and S501, judging whether the voltage value of the positive electrode side of the soft package battery as the defective product rises from zero to the voltage value of the soft package battery as the defective product at a third preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery as the defective product is attenuated before the first detection circuit is disconnected.
Specifically, whether the voltage value of the positive electrode side of the non-defective soft package battery rises from zero to the voltage value of the non-defective soft package battery at a third preset time point (the moment when the first detection circuit is just switched from off to on) is judged, the voltage value of the non-defective soft package battery is known, the parameters of the voltage values of different batteries are different, the voltage value of the non-defective soft package battery is determined according to factory settings, and the voltage value of the positive electrode side of the non-defective soft package battery is not attenuated before the first detection circuit is switched off.
S502: if the positive side voltage value of the soft package battery of the non-good product is in the third preset time point, the voltage value rises from zero to the battery voltage value of the soft package battery of the non-good product, the positive side voltage value of the soft package battery of the non-good product is not attenuated before the first detection circuit is disconnected, when the second detection circuit is switched on, whether the negative side voltage value of the soft package battery of the non-good product rises from zero to the battery voltage value of the soft package battery of the non-good product at the fourth preset time point or not is judged, and whether the negative side voltage value of the soft package battery of the non-good product is attenuated to zero from the battery voltage value within the fourth preset time range or not is judged, wherein the second detection circuit is used for measuring the negative side voltage value of the soft package battery in real time.
Specifically, if the positive pole limit voltage value of non-defective products laminate polymer battery is in the third predetermined time point rises to from zero the battery voltage value of non-defective products laminate polymer battery, just the positive pole limit voltage value of non-defective products laminate polymer battery is in voltage attenuation does not take place before first detection circuitry breaks off, then after the negative pole limit voltage value second detection circuitry that is used for real-time measurement laminate polymer battery switches on, the negative pole limit voltage value of laminate polymer battery that waits to detect in the continuous collection 0.5s ~5s, if negative pole limit voltage value is not gathered, then gather and detect and carry out the collection of negative pole limit voltage again behind the positive pole limit voltage value of laminate polymer battery.
When the second detection circuit is conducted, whether the voltage value of the negative electrode side of the soft package battery in the non-defective products rises from zero to the voltage value of the soft package battery in the non-defective products at a fourth preset time point (the moment when the second detection circuit is just changed from non-conduction to conduction) is judged, and the voltage value of the negative electrode side of the soft package battery in the non-defective products is attenuated to zero from the voltage value of the battery within a fourth preset time range (400 ms-600 ms after the second detection circuit is conducted).
S503: and if the voltage value of the negative electrode side of the soft package battery in the non-good product rises from zero to the voltage value of the soft package battery in the non-good product at the fourth preset time point, and the voltage value of the negative electrode side of the soft package battery in the non-good product is attenuated to zero from the voltage value of the battery within the fourth preset time range, the reason for the non-good product of the soft package battery in the non-good product is marked as the conduction of a battery tab.
Specifically, if the voltage value of the negative electrode edge of the soft package battery as the non-good product rises from zero to the voltage value of the soft package battery as the non-good product at the fourth preset time point, and the voltage value of the negative electrode edge of the soft package battery as the non-good product decays from the voltage value of the battery to zero within the fourth preset time range, the reason for the non-good product of the soft package battery as the conduction of a battery tab is marked; referring to fig. 6, fig. 6 is a schematic diagram illustrating a change of the positive-electrode-side voltage value of the tab-connected battery according to a first embodiment of the present invention, where the schematic diagram illustrates a two-dimensional coordinate system with time as a horizontal axis and a voltage value as a vertical axis, the positive-electrode-side voltage value of the tab-connected battery increases from 0 to the battery voltage value of the tab-connected battery at the third preset time point, and the positive-electrode-side voltage value of the tab-connected battery does not undergo voltage attenuation before the first detection circuit is turned off; referring to fig. 7, fig. 7 is a schematic diagram illustrating a change of a negative-electrode-side voltage value of a tab-connected battery according to a first embodiment of the present invention, where the schematic diagram illustrates a two-dimensional coordinate system with time as a horizontal axis and a voltage value as a vertical axis, the negative-electrode-side voltage value of the tab-connected battery increases from 0 to the battery voltage value of the tab-connected battery at the fourth preset time point, and the negative-electrode-side voltage value of the non-defective soft package battery decreases from the battery voltage value to 0 within the fourth preset time range.
In a possible implementation, referring to fig. 8, fig. 8 shows a flowchart of another defective product reason marking method provided in an embodiment of the present invention, where after the to-be-detected soft package battery is marked as a defective soft package battery, the method includes steps S801 to S803:
s801: and judging whether the voltage value of the positive electrode side of the soft package battery in the non-good products rises to a first voltage value from zero at a fifth preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery in the non-good products is attenuated before the first detection circuit is disconnected, wherein the first voltage value is smaller than the voltage value of the soft package battery in the non-good products.
Specifically, whether the voltage value of the positive electrode side of the non-defective soft package battery rises from zero to the first voltage value at a fifth preset time point (the moment when the first detection circuit is just switched from off to on) is judged, and the voltage value of the positive electrode side of the non-defective soft package battery does not have voltage attenuation before the first detection circuit is switched off.
S802: if the positive voltage value of the soft package battery of the non-good product is in the fifth preset time point, the voltage value rises from zero to the first voltage value, and the positive voltage value of the soft package battery of the non-good product is not attenuated before the first detection circuit is disconnected, then when the second detection circuit is switched on, whether the negative voltage value of the soft package battery of the non-good product is the second voltage value or not is judged, whether the negative voltage value of the soft package battery of the non-good product is in or not is judged, wherein the second detection circuit is used for measuring the negative voltage value of the soft package battery of the non-good product in real time, and the second voltage value is the difference value between the battery voltage value of the soft package battery of the non-good product and the positive voltage value of the soft package battery of the non-good product.
Specifically, if the positive voltage value of the soft package battery in the non-defective products is in the fifth preset time point rises from zero to the first voltage value, and the positive voltage value of the soft package battery in the non-defective products is in no voltage attenuation before the first detection circuit is disconnected, the negative voltage value of the soft package battery to be detected in 0.5 s-5 s is continuously collected after the second detection circuit for measuring the negative voltage value of the soft package battery in real time is switched on, and if the negative voltage value is not collected, the negative voltage is collected after the positive voltage value of the soft package battery is collected and detected.
When the second detection circuit is switched on, whether the negative side voltage value of the soft package battery in the non-good product is the second voltage value or not is judged, the negative side voltage value of the soft package battery in the non-good product is not attenuated before the second detection circuit is switched off, and the second voltage value is the difference value between the battery voltage value of the soft package battery in the non-good product and the positive side voltage value of the soft package battery in the non-good product, namely, the sum of the numerical value of the first voltage value and the numerical value of the second voltage value is the battery voltage value of the soft package battery in the non-good product.
S803: and if the voltage value of the negative electrode side of the soft package battery as the defective product is the second voltage value and the voltage attenuation does not occur before the second detection circuit is disconnected, marking the reason of the defective product of the soft package battery as battery leakage.
Specifically, if the voltage value of the negative electrode side of the non-defective soft package battery is the second voltage value and the voltage value of the negative electrode side of the non-defective soft package battery does not undergo voltage attenuation before the second detection circuit is disconnected, the cause of the non-defective soft package battery is marked as battery leakage; referring to fig. 9, fig. 9 is a schematic diagram illustrating a variation of the positive-electrode-side voltage value of the leaky battery according to the first embodiment of the present invention, where the variation is a two-dimensional coordinate system with time as a horizontal axis and a voltage value as a vertical axis, the positive-electrode-side voltage value of the leaky battery increases from 0 to the first voltage value at the fifth preset time point, and no voltage attenuation occurs before the first detection circuit is turned off; referring to fig. 10, fig. 10 is a schematic diagram illustrating a variation of the negative side voltage value of the leaky battery according to the first embodiment of the present invention, where the variation is a two-dimensional coordinate system with time as a horizontal axis and a voltage value as a vertical axis, the negative side voltage value of the leaky battery increases from 0 to the second voltage value at a sixth preset time point, and the negative side voltage value of the leaky battery does not undergo voltage attenuation before the second detection circuit is turned off.
Example two
Referring to fig. 11, fig. 11 is a schematic structural diagram illustrating a pouch battery detection device according to a second embodiment of the present invention, where as shown in fig. 11, the pouch battery detection device according to the second embodiment of the present invention includes:
the first judging module 1101 is configured to, when the first detecting circuit is turned on, judge whether the positive-electrode-side voltage value of the pouch battery to be detected rises from zero to a first preset threshold at a first preset time point, and judge whether the positive-electrode-side voltage value of the pouch battery to be detected decays from the first preset threshold to zero within a first preset time range, where the first detecting circuit is configured to measure the positive-electrode-side voltage value of the pouch battery in real time;
the first marking module 1102 is configured to mark the to-be-detected soft package battery as a good battery if the positive voltage value of the to-be-detected soft package battery rises from zero to the first preset threshold at the first preset time point, and the positive voltage value of the to-be-detected soft package battery decays from the first preset threshold to zero within the first preset time range.
In a possible implementation, referring to fig. 12, fig. 12 is a schematic structural diagram of another pouch battery detection device provided in example two of the present invention, where the device further includes:
the second marking module 1201 is configured to, after determining whether the positive-electrode-side voltage value of the to-be-detected soft package battery rises from zero to a first preset threshold at a first preset time point, and determining whether the positive-electrode-side voltage value of the to-be-detected soft package battery decays from the first preset threshold to zero within a first preset time range, mark the to-be-detected soft package battery as a non-defective soft package battery if the positive-electrode-side voltage value of the to-be-detected soft package battery does not rise from zero to the first preset threshold at the first preset time point, and/or the positive-electrode-side voltage value of the to-be-detected soft package battery does not decay from the first preset threshold to zero within the first preset time range.
In a possible implementation, referring to fig. 13, fig. 13 is a schematic structural diagram of another pouch battery detection device provided in example two of the present invention, where the device further includes:
the second judging module 1301 is configured to, after the to-be-detected soft package battery is marked as a non-good soft package battery, judge whether a positive-electrode-side voltage value of the non-good soft package battery rises from zero to the first preset threshold at a second preset time point, and judge whether the positive-electrode-side voltage value of the non-good soft package battery decays from the first preset threshold to zero within a second preset time range, where the second preset time range is greater than the first preset time range;
a third marking module 1302, configured to mark the cause of the non-good product of the soft package battery as a damaged polypropylene layer if the voltage value of the positive electrode edge of the non-good product of the soft package battery increases from zero to the first preset threshold at the second preset time point, and the voltage value of the positive electrode edge of the non-good product of the soft package battery decays from the first preset threshold to zero within the second preset time range.
In a possible implementation, referring to fig. 14, fig. 14 is a schematic structural diagram of another pouch battery detection device provided in example two of the present invention, where the device further includes:
a third judging module 1401, configured to judge whether a positive-electrode-side voltage value of the to-be-detected soft package battery rises from zero to a battery voltage value of the to-be-detected soft package battery at a third preset time point after the to-be-detected soft package battery is marked as a non-defective soft package battery, and judge whether a voltage attenuation occurs before the first detecting circuit is disconnected;
a fourth judging module 1402, configured to judge, when the second detection circuit is turned on, whether the voltage value of the negative electrode side of the non-good-product soft package battery rises from zero to the voltage value of the non-good-product soft package battery at the fourth preset time point, and judge whether the voltage value of the negative electrode side of the non-good-product soft package battery falls from the voltage value of the battery to zero at the fourth preset time range, where the second detection circuit is configured to measure the voltage value of the negative electrode side of the soft package battery in real time;
a fourth marking module 1403, configured to if the negative side voltage value of the non-defective product soft package battery is in the fourth preset time point, the negative side voltage value of the non-defective product soft package battery rises from zero to the battery voltage value of the non-defective product soft package battery, and the negative side voltage value of the non-defective product soft package battery is in the fourth preset time range, the battery voltage value is attenuated to zero, and then the non-defective product reason mark of the non-defective product soft package battery is a battery tab conduction.
In a possible implementation, referring to fig. 15, fig. 15 is a schematic structural diagram of another pouch battery detection device provided in the second embodiment of the present invention, where the device further includes:
a fifth judging module 1501, configured to judge whether a positive-electrode-side voltage value of the non-defective soft package battery rises from zero to a first voltage value at a fifth preset time point, and judge whether a voltage attenuation occurs before the first detecting circuit is turned off, where the first voltage value is smaller than a battery voltage value of the non-defective soft package battery;
a sixth determining module 1502, configured to determine, when a second detecting circuit is turned on, whether a negative voltage value of the non-good soft package battery is a second voltage value and determine whether a negative voltage value of the non-good soft package battery is voltage attenuated before the second detecting circuit is turned off if the positive voltage value of the non-good soft package battery is increased from zero to the first voltage value at the fifth preset time point and the positive voltage value of the non-good soft package battery is not attenuated before the first detecting circuit is turned off, where the second detecting circuit is configured to measure the negative voltage value of the soft package battery in real time and the second voltage value is a difference between the battery voltage value of the non-good soft package battery and the positive voltage value of the non-good soft package battery;
a fifth marking module 1503, configured to mark the defective product reason of the defective product soft package battery as battery leakage if the negative side voltage value of the defective product soft package battery is the second voltage value and no voltage attenuation occurs before the second detection circuit is disconnected.
EXAMPLE III
Based on the same application concept, referring to fig. 16, fig. 16 shows a schematic structural diagram of a computer device according to a third embodiment of the present invention, where as shown in fig. 16, a computer device 1600 according to the third embodiment of the present invention includes:
a processor 1601, a memory 1602 and a bus 1603, wherein the memory 1602 stores machine readable instructions executable by the processor 1601, when the computer 1600 runs, the processor 1601 communicates with the memory 1602 through the bus 1603, and the machine readable instructions are executed by the processor 1601 to perform the steps of a soft pack battery detection method according to the first embodiment.
Example four
Based on the same application concept, embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program performs the steps of the pouch battery detection method described in any one of the foregoing embodiments.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working process of the system and the apparatus described above may refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.
The computer program product for detecting a pouch battery provided in the embodiment of the present invention includes a computer-readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, which is not described herein again.
The soft package battery detection device provided by the embodiment of the invention can be specific hardware on equipment or software or firmware installed on the equipment. The device provided by the embodiment of the present invention has the same implementation principle and the same technical effects as those of the foregoing method embodiments, and for the sake of brief description, reference may be made to corresponding contents in the foregoing method embodiments for the parts of the device embodiments that are not mentioned. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided by the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the scope of the disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the present invention in its spirit and scope. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A soft package battery detection method is characterized by comprising the following steps:
when the first detection circuit is conducted, judging whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to a first preset threshold value at a first preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery to be detected is attenuated from the first preset threshold value to zero within a first preset time range, wherein the first detection circuit is used for measuring the voltage value of the positive electrode side of the soft package battery in real time;
and if the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range, marking the soft package battery to be detected as a good battery.
2. The method according to claim 1, wherein after determining whether the positive side voltage value of the pouch battery to be detected rises from zero to a first preset threshold value at a first preset time point and determining whether the positive side voltage value of the pouch battery to be detected decays from the first preset threshold value to zero within a first preset time range, the method further comprises:
and if the voltage value of the positive electrode side of the soft package battery to be detected does not rise to the first preset threshold value from zero at the first preset time point, and/or the voltage value of the positive electrode side of the soft package battery to be detected does not decay to zero from the first preset threshold value within the first preset time range, marking the soft package battery to be detected as a non-good soft package battery.
3. The method according to claim 2, wherein after marking the pouch cells to be tested as defective pouch cells, the method further comprises:
judging whether the voltage value of the positive electrode side of the soft package battery with the unqualified product rises from zero to the first preset threshold value at a second preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery with the unqualified product decays from the first preset threshold value to zero within a second preset time range, wherein the second preset time range is larger than the first preset time range;
and if the voltage value of the positive electrode side of the soft package battery of the unqualified product rises from zero to the first preset threshold value at the second preset time point, and the voltage value of the positive electrode side of the soft package battery of the unqualified product is attenuated from the first preset threshold value to zero within the second preset time range, marking the reason for the unqualified product of the soft package battery of the unqualified product as the damage of the polypropylene layer of the battery.
4. The method according to claim 2, wherein after marking the pouch cells to be tested as defective pouch cells, the method further comprises:
judging whether the voltage value of the positive electrode side of the soft package battery in the non-defective products rises from zero to the voltage value of the soft package battery in the non-defective products at a third preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery in the non-defective products is attenuated before the first detection circuit is disconnected;
if the voltage value of the positive electrode side of the non-defective soft package battery rises from zero to the voltage value of the non-defective soft package battery at the third preset time point, and the voltage value of the positive electrode side of the non-defective soft package battery does not undergo voltage attenuation before the first detection circuit is switched off, judging whether the voltage value of the negative electrode side of the non-defective soft package battery rises from zero to the voltage value of the non-defective soft package battery at the fourth preset time point when the second detection circuit is switched on, and judging whether the voltage value of the negative electrode side of the non-defective soft package battery decays from the voltage value of the battery to zero within the fourth preset time range, wherein the second detection circuit is used for measuring the voltage value of the negative electrode side of the soft package battery in real time;
and if the voltage value of the negative electrode side of the soft package battery in the non-good product rises from zero to the voltage value of the soft package battery in the non-good product at the fourth preset time point, and the voltage value of the negative electrode side of the soft package battery in the non-good product is attenuated to zero from the voltage value of the battery within the fourth preset time range, the reason for the non-good product of the soft package battery in the non-good product is marked as the conduction of a battery tab.
5. The method according to claim 2, wherein after marking the pouch cells to be tested as defective pouch cells, the method further comprises:
judging whether the voltage value of the positive electrode side of the soft package battery in the non-defective products rises from zero to a first voltage value at a fifth preset time point, and judging whether the voltage value of the positive electrode side of the soft package battery in the non-defective products is attenuated before the first detection circuit is disconnected, wherein the first voltage value is smaller than the voltage value of the soft package battery in the non-defective products;
if the voltage value of the positive electrode side of the non-good soft package battery rises from zero to the first voltage value at the fifth preset time point, and the voltage value of the positive electrode side of the non-good soft package battery does not have voltage attenuation before the first detection circuit is disconnected, judging whether the voltage value of the negative electrode side of the non-good soft package battery is a second voltage value or not when a second detection circuit is switched on, and judging whether the voltage value of the negative electrode side of the non-good soft package battery has voltage attenuation before the second detection circuit is disconnected or not, wherein the second detection circuit is used for measuring the voltage value of the negative electrode side of the soft package battery in real time, and the second voltage value is the difference value between the voltage value of the battery of the non-good soft package battery and the voltage value of the positive electrode side of the non-good soft package battery;
and if the voltage value of the negative electrode side of the soft package battery in the non-good products is the second voltage value and the voltage value of the negative electrode side of the soft package battery in the non-good products is not attenuated before the second detection circuit is disconnected, marking the reason of the non-good products of the soft package battery in the non-good products as battery leakage.
6. The utility model provides a laminate polymer battery detection device which characterized in that, the device includes:
the first judging module is used for judging whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to a first preset threshold value at a first preset time point when the first detecting circuit is switched on, and judging whether the voltage value of the positive electrode side of the soft package battery to be detected is attenuated from the first preset threshold value to zero within a first preset time range, wherein the first detecting circuit is used for measuring the voltage value of the positive electrode side of the soft package battery in real time;
and the first marking module is used for marking the soft package battery to be detected as a good battery if the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point, and the voltage value of the positive electrode side of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range.
7. The apparatus of claim 6, further comprising:
and the second marking module is used for marking the soft package battery to be detected as a non-defective soft package battery if the positive side voltage value of the soft package battery to be detected does not rise from zero to the first preset threshold value at the first preset time point and/or the positive side voltage value of the soft package battery to be detected does not decay from the first preset threshold value to zero within the first preset time range after judging whether the positive side voltage value of the soft package battery to be detected rises from zero to the first preset threshold value at the first preset time point or not and judging whether the positive side voltage value of the soft package battery to be detected decays from the first preset threshold value to zero within the first preset time range or not.
8. The apparatus of claim 7, further comprising:
the second judging module is used for judging whether the voltage value of the positive electrode side of the soft package battery to be detected rises from zero to the first preset threshold value at a second preset time point after the soft package battery to be detected is marked as a soft package battery to be unqualified, and judging whether the voltage value of the positive electrode side of the soft package battery to be unqualified decays from the first preset threshold value to zero within a second preset time range, wherein the second preset time range is larger than the first preset time range;
and the third marking module is used for marking the defective product reason of the defective product soft package battery as a battery polypropylene layer damage if the voltage value of the positive electrode edge of the defective product soft package battery is in the second preset time point, the voltage value of the positive electrode edge of the defective product soft package battery is increased from zero to the first preset threshold value, and the voltage value of the positive electrode edge of the defective product soft package battery is in the second preset time range, and the voltage value of the positive electrode edge of the defective product soft package battery is attenuated from the first preset threshold value to zero.
9. A computer device, comprising: a processor, a memory and a bus, the memory storing machine readable instructions executable by the processor, the processor and the memory communicating over the bus when a computer device is running, the machine readable instructions when executed by the processor performing the steps of the pouch cell detection method of any one of claims 1 to 5.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, performs the steps of the pouch cell detection method according to any one of claims 1 to 5.
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| CN114859246A (en) | 2022-08-05 |
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