CN115825738A - Battery pack performance detection system - Google Patents
Battery pack performance detection system Download PDFInfo
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- CN115825738A CN115825738A CN202211356728.9A CN202211356728A CN115825738A CN 115825738 A CN115825738 A CN 115825738A CN 202211356728 A CN202211356728 A CN 202211356728A CN 115825738 A CN115825738 A CN 115825738A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to the technical field of automatic control testing, in particular to a battery pack performance detection system. The device comprises a battery voltage detection circuit, a switch circuit, a load circuit and a battery ground connection circuit. One end of the battery voltage detection circuit is connected with the positive electrode of the battery pack, and the output end of the battery voltage detection circuit is connected with the acquisition card; one end of the switch circuit is connected with the other end of the battery voltage detection circuit, the switch circuit is used for switching on the battery voltage detection circuit and the load circuit when the switch circuit is opened, and the switch circuit is used for switching off the battery voltage detection circuit and the load circuit when the switch circuit is closed; one end of the load circuit is connected with the other end of the switch circuit, and the other end of the load circuit is connected with the cathode of the battery pack; the battery ground connection circuit is respectively connected with one end of the battery voltage detection circuit and the other end of the load circuit. The invention can efficiently, quickly and safely detect the open-circuit voltage and the on-load voltage of the battery pack.
Description
Technical Field
The invention relates to the technical field of automatic control testing, in particular to a battery pack performance detection system.
Background
The battery pack performance detection can know the characteristics of the battery, important parameters such as the capacity, the internal resistance, the voltage characteristic, the rate characteristic, the temperature characteristic, the cycle life, the energy density and the like of the battery need to be known through tests, and not only needs to demonstrate whether the tested battery achieves the design target or not through the parameters, but also needs to achieve better management and control in the process of using the battery through the parameters.
In the prior art, the performance of a detection battery is mostly detected manually by directly using a universal meter, and the efficiency of the mode is lower. In the prior art, a battery performance detection method is to automatically detect the performance of a battery pack by using software, after a group of battery packs are detected, the battery packs are manually replaced to test the next group of battery packs.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a battery performance detection system, which can detect the open-circuit voltage and the on-load voltage of the battery pack efficiently, quickly and safely without determining whether the parallel connection of the battery packs is short-circuited when detecting the parallel connected battery packs.
To achieve the above and other related objects, the present invention provides a battery pack performance detecting system, comprising:
one end of the battery voltage detection circuit is connected with the positive electrode of the battery pack, and the output end of the battery voltage detection circuit is connected with the acquisition card;
the battery voltage detection circuit is used for detecting the voltage of the battery, and the switching circuit is used for switching on the battery voltage detection circuit and the load circuit when the switching circuit is switched on and switching off the battery voltage detection circuit and the load circuit when the switching circuit is switched off;
one end of the load circuit is connected with the other end of the switch circuit, and the other end of the load circuit is connected with the cathode of the battery pack;
and the battery ground connecting circuit is respectively connected with one end of the battery voltage detection circuit and the other end of the load circuit.
In an embodiment of the present invention, the battery voltage detection circuit includes:
one end of the first resistor is connected with the anode of the battery pack and one end of the switch circuit respectively, and the other end of the first resistor is connected with the acquisition card;
one end of the second resistor is connected with the other end of the first resistor, and the other end of the second resistor is grounded;
and one end of the first capacitor is connected with the other end of the first resistor, and the other end of the first capacitor is grounded.
In an embodiment of the present invention, the switching circuit includes:
and one end of the switch is connected with one end of the first resistor and the positive electrode of the battery pack, and the other end of the switch is connected with one end of the load circuit.
In an embodiment of the present invention, the load circuit includes:
and one end of the third resistor is connected with the other end of the switch, and the other end of the third resistor is connected with the cathode of the battery pack.
In an embodiment of the present invention, the battery ground connection circuit includes:
the type number of the relay is JZC-102M, a pin 1 of the relay is connected with the anode of the battery pack, a pin 3 of the relay is connected with the cathode of the battery pack, a pin 5 of the relay is connected with a switching signal, and a pin 4 of the relay is connected with a power supply;
and the anode of the diode is connected with the pin 5 of the relay, and the cathode of the diode is connected with the pin 4 of the relay.
In an embodiment of the invention, the resistance of the first resistor is 469.5-470.5K Ω, and the power is 0.25W.
In an embodiment of the invention, the resistance of the second resistor is 469.5-470.5K Ω, and the power is 0.25W.
In an embodiment of the invention, the resistance of the third resistor is 29.7-30.3 Ω, and the power is 5W.
In an embodiment of the invention, a capacitance value of the first capacitor is 0.1uF.
As described above, the battery pack performance detection system of the present invention has the following beneficial effects:
the battery pack performance detection system is provided with the switch circuit, the load circuit and the battery ground connection circuit, has a simple structure, and can efficiently, quickly and safely detect the open-circuit voltage and the loaded voltage of the battery pack under the condition of not determining whether the parallel connection of the battery packs is short-circuited when detecting the parallel battery packs.
The battery pack performance detection system solves the problems of battery pack detection efficiency and safety when the battery pack performance is detected.
The battery pack performance detection system can ensure that no short circuit phenomenon exists in the battery pack after all anodes of the battery pack complete open-circuit voltage test, and can carry out on-load voltage test.
Drawings
Fig. 1 is a schematic structural diagram of a battery pack performance detection system according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a battery voltage detection circuit, a switch circuit, and a load circuit of a battery pack performance detection system according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a battery ground connection circuit of a battery performance detection system according to an embodiment of the present disclosure.
Description of the element reference
10. Battery voltage detection circuit
20. Switching circuit
30. Load circuit
40. Battery ground connection circuit
R1 first resistor
R2 second resistance
R3 third resistor
C1 First capacitor
K1 Switch with a switch body
K2 Relay with a movable contact
D1 Diode with a high-voltage source
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a battery performance detection system according to an embodiment of the present disclosure. Fig. 2 is a schematic structural diagram of a battery voltage detection circuit, a switch circuit, and a load circuit of a battery pack performance detection system according to an embodiment of the present application. The invention provides a battery pack performance detection system, which comprises but is not limited to a battery voltage detection circuit 10, a switch circuit 20, a load circuit 30 and a battery ground connection circuit 40. One end of the battery voltage detection circuit 10 is connected with the positive electrode of the battery pack, and the output end of the battery voltage detection circuit 10 is connected with the acquisition card; one end of the switch circuit 20 is connected to the other end of the battery voltage detection circuit 10, the switch circuit 20 is configured to switch on the battery voltage detection circuit 10 and the load circuit 30 when the switch circuit 20 is turned on, and the switch circuit 20 is configured to switch off the battery voltage detection circuit 10 and the load circuit 30 when the switch circuit 20 is turned off; one end of the load circuit 30 is connected with the other end of the switch circuit 20, and the other end of the load circuit 30 is connected with the cathode of the battery pack; the battery ground connection circuit 40 is connected to one end of the battery voltage detection circuit 10 and the other end of the load circuit 30, respectively.
Specifically, the battery voltage detection circuit 10 includes a first resistor R1, a second resistor R2, and a first capacitor C1. One end of the first resistor R1 is connected with the anode of the battery pack and one end of the switch circuit 20 respectively, and the other end of the first resistor R1 is connected with the acquisition card; one end of the second resistor R2 is connected with the other end of the first resistor R1, and the other end of the second resistor R2 is grounded; one end of the first capacitor C1 is connected to the other end of the first resistor R1, and the other end of the first capacitor C1 is grounded.
The first resistor R1 and the second resistor R2 are common resistors. The resistance value of the first resistor R1 is 469.5-470.5K omega, and the power is 0.25W. For example, the resistance of the first resistor R1 may be, but is not limited to, 470K Ω and 0.25W. The resistance value of the second resistor R2 is 469.5-470.5K omega, and the power is 0.25W. For example, the resistance of the second resistor R2 may be, but is not limited to, 470K Ω and 0.25W. The capacitance value of the first capacitor C1 is 0.1uF.
The switch circuit 20 includes, but is not limited to, a switch K1, one end of the switch K1 is connected to one end of the first resistor R1 and a positive electrode of the battery pack, and the other end of the switch K1 is connected to one end of the load circuit 30.
The load circuit 30 includes, but is not limited to, a third resistor R3, one end of the third resistor R3 is connected to the other end of the switch K1, and the other end of the third resistor R3 is connected to the negative electrode of the battery pack. The resistance value of the third resistor R3 is 29.7-30.3 omega, and the power is 5W. For example, the resistance of the third resistor R3 is 30 Ω, and the power is 5W.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a battery ground connection circuit of a battery performance detection system according to an embodiment of the present disclosure. The battery ground connection circuit 40 includes, but is not limited to, a relay K2 and a diode D1. The type of the relay K2 is JZC-102M, a pin 1 of the relay K2 is connected with the anode of the battery pack, a pin 3 of the relay K2 is connected with the cathode of the battery pack, a pin 5 of the relay K2 is connected with a switching signal, and a pin 4 of the relay K2 is connected with a power supply; the positive pole of the diode D1 is connected with the pin 5 of the relay K2, and the negative pole of the diode D1 is connected with the pin 4 of the relay K2.
In order to further explain the working principle of the battery pack performance detection system of the present invention, the present invention also provides a detection method of the battery pack performance detection system after being powered on, the detection method does not belong to the protection scope of the present invention, and is only used for further explanation and understanding of the structure of the battery pack performance detection system of the present invention: the detection method of the battery pack performance detection system after being powered on comprises the following steps:
the switch K1 is turned off, the positive electrode of the battery pack is connected to one end of the battery voltage detection circuit 10, and the negative electrode of the battery pack is connected to the other end of the load circuit 30. And closing the relay K2, connecting a pin 1 of the relay K2 with the anode of the battery pack, and connecting a pin 3 of the relay K2 with the cathode of the battery pack. The open-circuit voltage of the battery pack is collected through the collection card, and the open-circuit voltage of the battery pack is measured through one end of the battery voltage detection circuit 10. And after the open-circuit voltages of all batteries included in the battery pack are completely measured, switching on the switch K1 to enable the load circuit 30 to be connected, collecting the closed voltage of the battery pack through the collecting card again, repeatedly switching off the switch K1 after the battery pack is completely measured, connecting the anode of the battery pack with one end of the battery voltage detection circuit 10, connecting the cathode of the battery pack with the other end of the load circuit 30, and measuring the next battery pack until all the battery packs are completely measured.
Specifically, firstly, AD sampling is used for measuring the open-circuit voltage of the battery by using an acquisition card, namely, the A4 AI0 end is connected with the acquisition card to measure the open-circuit voltage of the battery, the DY GZ1+ end is connected with the anodes of the group of battery packs, when all the open-circuit voltages of the batteries of the group of battery packs are completely measured and are normal, the switch K1 is switched on, the A2 CH1 end and the A2 COM1 end are communicated in a closed mode, and at the moment, the third resistor R3 is switched into a circuit to serve as a load. And measuring the on-load voltage of the battery pack by AD sampling, disconnecting the switch K1 after the test is finished, testing the on-load voltage of the next battery pack, and closing all switches after the test of the on-load voltage of all the battery packs is finished, thus finishing the test.
Specifically, the relay K2 is controlled to be closed, all ground wires GND GZ1 of the battery pack are connected to the ground of the circuit, when the open-circuit voltage of the battery pack is tested, each ground wire of the battery pack is controlled to be connected to a signal ground through the relay K2 to carry out AD sampling, the anode of the battery pack and all the ground wires of the battery are tested, and the anode of the battery pack and all the ground wires of the battery are ensured to be free of short circuit. After the open-circuit voltage test is completed on the anodes of all the battery packs, no short circuit phenomenon inside the battery packs can be ensured, and the on-load voltage test can be performed.
In summary, the battery pack performance detection system of the present invention has a simple structure due to the arrangement of the switch circuit 20, the load circuit 30, and the battery ground connection circuit 40, and can efficiently, quickly, and safely detect the open-circuit voltage and the on-load voltage of the battery pack when detecting the parallel battery packs without determining whether the parallel battery packs are short-circuited.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A battery pack performance detection system, comprising:
one end of the battery voltage detection circuit (10) is connected with the positive electrode of the battery pack, and the output end of the battery voltage detection circuit (10) is connected with the acquisition card;
a switch circuit (20), one end of which is connected to the other end of the battery voltage detection circuit (10), the switch circuit (20) being configured to switch the battery voltage detection circuit (10) on to the load circuit (30) when the switch circuit (20) is open, and the switch circuit (20) being configured to switch the battery voltage detection circuit (10) off to the load circuit (30) when the switch circuit (20) is closed;
a load circuit (30) having one end connected to the other end of the switch circuit (20), the other end of the load circuit (30) being connected to a negative electrode of the battery pack;
and a battery ground connection circuit (40) which is connected to one end of the battery voltage detection circuit (10) and the other end of the load circuit (30), respectively.
2. A battery pack performance detection system as claimed in claim 1, wherein the battery voltage detection circuit (10) comprises:
one end of the first resistor (R1) is respectively connected with the anode of the battery pack and one end of the switch circuit (20), and the other end of the first resistor (R1) is connected with the acquisition card;
a second resistor (R2), one end of which is connected with the other end of the first resistor (R1), and the other end of the second resistor (R2) is grounded;
and one end of the first capacitor (C1) is connected with the other end of the first resistor (R1), and the other end of the first capacitor (C1) is grounded.
3. A battery pack performance detection system as claimed in claim 2, wherein the switching circuit (20) comprises:
and one end of the switch (K1) is connected with one end of the first resistor (R1) and the positive electrode of the battery pack, and the other end of the switch (K1) is connected with one end of the load circuit (30).
4. A battery pack performance detection system as claimed in claim 3, wherein the load circuit (30) comprises:
and one end of the third resistor (R3) is connected with the other end of the switch (K1), and the other end of the third resistor (R3) is connected with the cathode of the battery pack.
5. The battery pack performance detection system according to claim 4, wherein the battery ground connection circuit (40) includes:
the relay (K2) is JZC-102M in type, a pin 1 of the relay (K2) is connected with the positive electrode of the battery pack, a pin 3 of the relay (K2) is connected with the negative electrode of the battery pack, a pin 5 of the relay (K2) is connected with a switching signal, and a pin 4 of the relay (K2) is connected with a power supply;
and the anode of the diode (D1) is connected with the pin 5 of the relay (K2), and the cathode of the diode (D1) is connected with the pin 4 of the relay (K2).
6. The battery pack performance detection system of claim 2, wherein: the resistance value of the first resistor (R1) is 469.5-470.5K omega, and the power is 0.25W.
7. The battery pack performance detection system of claim 2, wherein: the resistance value of the second resistor (R2) is 469.5-470.5K omega, and the power is 0.25W.
8. The battery pack performance detection system of claim 4, wherein: the resistance value of the third resistor (R3) is 29.7-30.3 omega, and the power is 5W.
9. The battery pack performance detection system of claim 2, wherein: the capacitance value of the first capacitor (C1) is 0.1uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356728.9A CN115825738A (en) | 2022-11-01 | 2022-11-01 | Battery pack performance detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356728.9A CN115825738A (en) | 2022-11-01 | 2022-11-01 | Battery pack performance detection system |
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| Publication Number | Publication Date |
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| CN115825738A true CN115825738A (en) | 2023-03-21 |
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| CN202211356728.9A Pending CN115825738A (en) | 2022-11-01 | 2022-11-01 | Battery pack performance detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116165557A (en) * | 2023-04-18 | 2023-05-26 | 深圳市思远半导体有限公司 | Battery detection method and device, electronic equipment and readable storage medium |
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- 2022-11-01 CN CN202211356728.9A patent/CN115825738A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116165557A (en) * | 2023-04-18 | 2023-05-26 | 深圳市思远半导体有限公司 | Battery detection method and device, electronic equipment and readable storage medium |
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