CN217467108U - Power battery simulation device - Google Patents
Power battery simulation device Download PDFInfo
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- CN217467108U CN217467108U CN202221325927.9U CN202221325927U CN217467108U CN 217467108 U CN217467108 U CN 217467108U CN 202221325927 U CN202221325927 U CN 202221325927U CN 217467108 U CN217467108 U CN 217467108U
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Abstract
The utility model relates to a new forms of energy technical field discloses a power battery analogue means. The power battery simulation device comprises a high-voltage conversion circuit, a low-voltage conversion circuit, a simulation battery module, an ammeter module and a voltage sampling circuit, wherein the high-voltage conversion circuit is used for generating a high-voltage direct-current power supply. The low-voltage conversion circuit is used for generating a low-voltage direct-current power supply. The analog battery module is used for generating analog voltage according to the high-voltage direct-current power supply. The ammeter module is used for working according to the low-voltage direct-current power supply and displaying the analog voltage. The voltage sampling circuit is used for sampling the analog voltage and transmitting the analog voltage to an upper computer. The embodiment can simulate the voltage of the real power battery, does not need to sample the voltage of the real power battery, is favorable for carrying out test operation and improving the test efficiency, and can also display the simulated voltage, so that a tester can test more pertinently, and the test efficiency of the tester is further improved.
Description
Technical Field
The utility model relates to a new forms of energy technical field especially relates to a power battery analogue means.
Background
With the development of new energy technology, new energy electric vehicles are more and more popular with users, wherein a power battery is used as a power source of the electric vehicle, and people need to test the accuracy and reliability of a battery management system by sampling a voltage signal of the power battery before the electric vehicle leaves a factory. However, the volume of a real power battery is large, the power maintenance is complex, and meanwhile, the power battery has potential safety hazards such as over-temperature charging and discharging, short circuit and electric leakage, so that the power battery is not beneficial to people to carry out test operation, and the test efficiency is low.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, an object of the embodiments of the present invention is to provide a power battery simulator for improving the problem of low efficiency of the existing test.
In a first aspect, an embodiment of the present invention provides a power battery simulation apparatus, including:
the high-voltage conversion circuit is used for responding to the input of an external power supply and generating a high-voltage direct-current power supply;
a low voltage converting circuit for generating a low voltage dc power in response to an input of the external power;
the analog battery module is electrically connected with the high-voltage conversion circuit and used for generating analog voltage according to the high-voltage direct-current power supply;
the electric meter module is respectively electrically connected with the low-voltage conversion circuit and the analog battery module, and is used for working according to the low-voltage direct-current power supply and displaying the analog voltage;
and the voltage sampling circuit is electrically connected with the analog battery module and is used for sampling the analog voltage and transmitting the analog voltage to an upper computer.
Optionally, the simulation battery module includes a first simulation battery unit and a second simulation battery unit, the first simulation battery unit is electrically connected to the high voltage conversion circuit after being connected in series with the second simulation battery unit, the electricity meter module is electrically connected to the first simulation battery unit and the second simulation battery unit, the voltage sampling circuit is electrically connected to the first simulation battery unit and the second simulation battery unit, respectively, wherein a resistance of the first simulation battery unit is adjustable, and a resistance of the second simulation battery unit is not adjustable.
Optionally, the first analog battery unit includes a plurality of first analog battery packs with adjustable resistance values, the plurality of first analog battery packs are connected in series and then connected in series with the second analog battery unit, and the voltage sampling circuit is electrically connected to each of the first analog battery packs;
the ammeter module includes a plurality of first ammeters, and is a plurality of first ammeters all with low pressure converting circuit electricity is connected, and every first ammeter with correspond first simulation group battery parallel connection, be used for showing correspond the analog voltage of first simulation group battery.
Optionally, each of the first analog battery packs includes a first battery equivalent circuit and a resistance-adjustable circuit, the first battery equivalent circuit is connected in parallel with the resistance-adjustable circuit and then connected in series with the second analog battery unit, and the voltage sampling circuit is electrically connected to two ends of the first battery equivalent circuit.
Optionally, the second analog battery unit includes a plurality of second analog battery packs with non-adjustable resistance values, the plurality of second analog battery packs are connected in series and then connected in series with the first analog battery unit, and the voltage sampling circuit is electrically connected to each of the second analog battery packs;
the ammeter module comprises at least one second ammeter, the second ammeter is electrically connected with the low-voltage conversion circuit, the second ammeter is connected with the corresponding second simulation battery pack in parallel, and the second ammeter is used for displaying the simulation voltage of the corresponding second simulation battery pack.
Optionally, the voltage sampling circuit includes a plurality of DP plugs, each of the DP plugs includes a plurality of voltage sampling lines, and each two of the voltage sampling lines are electrically connected to two ends of each analog battery pack.
Optionally, the high-voltage gear adjusting circuit is electrically connected to the high-voltage conversion circuit, and is configured to adjust a total voltage provided to the analog battery module according to the high-voltage dc power supply.
Optionally, the device further includes a voltage fine tuning circuit electrically connected to the high voltage conversion circuit, and configured to fine tune a total voltage provided to the analog battery module according to the high voltage dc power supply.
Optionally, the device further includes an emergency stop switch, and the emergency stop switch is electrically connected to the high-voltage conversion circuit and the low-voltage conversion circuit, and is configured to turn off power supply loops of the high-voltage conversion circuit and the low-voltage conversion circuit.
Optionally, the device further comprises a main ammeter, and the main ammeter and the high voltage conversion circuit are used for displaying the total voltage provided by the high voltage conversion circuit.
Compared with the prior art, in the power battery simulation device of the embodiment of the present invention, the high voltage conversion circuit is used for responding to the input of the external power supply to generate the high voltage dc power supply, the low voltage conversion circuit is used for responding to the input of the external power supply to generate the low voltage dc power supply, the analog battery module is electrically connected with the high voltage conversion circuit and is used for generating the analog voltage according to the high voltage dc power supply, the electricity meter module is electrically connected with the low voltage conversion circuit and the analog battery module respectively and is used for working according to the low voltage dc power supply and displaying the analog voltage, the voltage sampling circuit is electrically connected with the analog battery module and is used for sampling the analog voltage and transmitting the analog voltage to the upper computer, therefore, the present embodiment can simulate the voltage of the real power battery without sampling the voltage of the real power battery, is beneficial to developing the test operation and improving the test efficiency, and the present embodiment can also display the analog voltage, so that the tester can carry out the test work more pertinently, further improve tester's efficiency of software testing.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic circuit diagram of a power battery simulation apparatus according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a power battery simulation apparatus according to another embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a power battery simulation apparatus according to yet another embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a power battery simulation apparatus according to yet another embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a power battery simulation apparatus according to yet another embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a power battery simulation apparatus according to yet another embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a power battery simulation apparatus according to yet another embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a power battery simulation apparatus according to still another embodiment of the present invention;
fig. 9 is a schematic circuit diagram of a power battery simulation apparatus according to yet another embodiment of the present invention;
fig. 10 is a schematic circuit diagram of a power battery simulation apparatus according to still another embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "electrically connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "inner", "outer", "bottom", and the like as used herein are used in the description to indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, a power battery simulation apparatus 10 includes a high voltage conversion circuit 100, a low voltage conversion circuit 200, a simulation battery module 300, an electricity meter module 400, and a voltage sampling circuit 500.
The high voltage conversion circuit 100 is used to generate a high voltage dc power in response to an input of the external power source 11. Because the working voltage of the power battery is relatively high, the working voltage of the power battery can be effectively simulated through the high-voltage direct-current power supply provided by the high-voltage conversion circuit 100. The external power source 11 may be an ac power source or a dc power source with any suitable amplitude, such as 220V ac power source or 380V ac power source for the external power source 11. The high voltage direct current power supply can be determined by a user according to the working voltage of the power battery to be simulated, for example, the high voltage direct current power supply is 450V.
In some embodiments, the high voltage conversion circuit 100 may select an ac-to-dc high voltage conversion chip, and may convert a 220V ac power provided by a commercial power into a 450V high voltage dc power.
The low voltage converting circuit 200 is used for generating a low voltage dc power in response to the input of the external power source 11, wherein the low voltage dc power can be used as a power source for the corresponding electrical components of the power battery simulator for driving the corresponding electrical components of the power battery simulator to operate. The low-voltage dc power supply may be determined by a user according to an operating voltage of the corresponding electrical component, for example, the low-voltage dc power supply is 12V.
In some embodiments, the low voltage conversion circuit 200 may select an ac-to-dc low voltage conversion chip, and may convert a 220V ac power provided by a commercial power into a 12V low voltage dc power.
The analog battery module 300 is electrically connected to the high voltage conversion circuit 100, and is configured to generate an analog voltage according to the high voltage dc power, where the analog voltage is a target voltage for simulating an operating voltage of the power battery. The high voltage dc power is applied to the analog battery module 300, and the analog battery module 300 generates an analog voltage, such as 420V or other voltage value, in response to the excitation of the high voltage dc power.
The electric meter module 400 is electrically connected to the low voltage conversion circuit 200 and the analog battery module 300, respectively, for working according to the low voltage dc power supply and displaying the analog voltage, so that the tester can visually observe the analog voltage displayed by the electric meter module 400, adjust the analog voltage generated by the analog battery module 300 in a targeted manner, and improve the test efficiency. Therefore, the embodiment can display the analog voltage, so that a tester can perform test work more pertinently, and the test efficiency of the tester is further improved.
The voltage sampling circuit 500 is electrically connected to the analog battery module 300, and is configured to sample an analog voltage and transmit the analog voltage to the upper computer 12, where the upper computer may be a battery management chip or other devices such as a single chip microcomputer, for example, the battery management chip runs a code burnt in the battery management chip in advance according to the analog voltage, so as to control the on/off of a high-voltage relay of the rechargeable battery. Therefore, the voltage of the real power battery can be simulated, the voltage of the real power battery does not need to be sampled, and the test operation is favorably carried out and the test efficiency is improved.
In some embodiments, referring to fig. 2, the analog battery module 300 includes a first analog battery unit 31 and a second analog battery unit 32, the first analog battery unit 31 is electrically connected to the high voltage conversion circuit 100 after being connected to the second analog battery unit 32 in series, the electricity meter module 400 is electrically connected to the first analog battery unit 31 and the second analog battery unit 32, and the voltage sampling circuit 500 is electrically connected to the first analog battery unit 31 and the second analog battery unit 32, wherein a resistance of the first analog battery unit 31 is adjustable, and a resistance of the second analog battery unit 32 is not adjustable.
The high voltage conversion circuit 100 outputs a high voltage dc power to the first analog battery cell 31 and the second analog battery cell 32 connected in series, the high voltage dc power causes both the first analog battery cell 31 and the second analog battery cell 32 to generate analog voltages, and the voltage sampling circuit 500 may transmit the analog voltages of the first analog battery cell 31 and the second analog battery cell 32 to an upper computer, respectively.
Since the resistance of the first analog battery cell 31 is adjustable, the first analog battery cell 31 may generate analog voltages of different values according to the excitation of the high voltage dc power source, and the electric meter module 400 may display the analog voltages of the first analog battery cell 31. In some test scenes, different analog voltages need to be simulated in order to meet the requirements of different test scenes, a tester can adjust the resistance value of the first analog battery unit 31, so that the different analog voltages generated by the first analog battery unit 31 are transmitted to an upper computer by the voltage sampling circuit 500, and the upper computer executes corresponding test logics according to the different analog voltages, so that the requirements of the upper computer in different test scenes can be met, and the test efficiency is improved.
Since the resistance of the second analog battery cell 32 is not adjustable, the second analog battery cell 32 can generate an analog voltage with a fixed value according to the excitation of the high voltage dc power source, and the electric meter module 400 can display the analog voltage of the second analog battery cell 32. For a test scene only needing fixed voltage, the analog voltage of the second analog battery unit 32 is transmitted to the upper computer by the voltage sampling circuit 500, and the upper computer executes fixed test logic according to the fixed analog voltage, so that the requirements of the corresponding test scene can be met.
Therefore, the present embodiment can not only output different analog voltages through the first analog battery unit 31, but also output a fixed analog voltage through the second analog battery unit 32, so as to meet the requirements of various test scenarios with relatively high analog voltage requirements.
In some embodiments, referring to fig. 3, the first analog battery unit 31 includes a plurality of first analog battery packs 311 with adjustable resistance values, the plurality of first analog battery packs 311 are connected in series and then connected in series with the second analog battery unit 32, and the voltage sampling circuit 500 is electrically connected to each of the first analog battery packs 311. The electric meter module 400 includes a plurality of first electric meters 411, the plurality of first electric meters 411 are all electrically connected to the low voltage converting circuit 200, and each of the first electric meters 411 is connected in parallel to a corresponding first analog battery pack 311 for displaying an analog voltage of the corresponding first analog battery pack 311.
The high voltage dc power generated by the high voltage converting circuit 100 enables each of the first analog battery packs 311 to generate a corresponding analog voltage, and since the resistance value of each of the first analog battery packs 311 is adjustable, the analog voltage of the corresponding first analog battery pack 311 may be the same as or different from the analog voltages of the other first analog battery packs 311.
The low voltage dc power generated by the low voltage converting circuit 200 is used to drive the first electric meter 411 to work normally. The number of the first electric meters 411 is the same as the number of the first analog battery packs 311, each of the first electric meters 411 may display the analog voltage of the first analog battery packs 311 connected in parallel thereto, and the voltage sampling circuit 500 may transmit the analog voltage of each of the first analog battery packs 311 to an upper computer.
It is understood that the voltage sampling circuit 500 may simultaneously input an analog voltage corresponding to the number of the first analog battery packs 311 to one upper computer, and the upper computer may execute a plurality of test logics in a multi-thread manner according to the plurality of analog voltages. Or, the voltage sampling circuit 500 may transmit the analog voltage, which is the same as the number of the first analog battery packs 311, to a plurality of upper computers at the same time, and each upper computer executes a corresponding test logic according to the corresponding analog voltage, so that the present embodiment can satisfy a test scenario in which the test requirements are relatively complex and high. In addition, the tester adjusts the analog voltage of the corresponding first analog battery pack 311 according to the analog voltage displayed by the corresponding first electric meter 411, which is beneficial to improving the test efficiency.
In some embodiments, referring to fig. 4, each of the first analog battery packs 311 includes a first battery equivalent circuit 312 and a resistance adjustable circuit 313, the first battery equivalent circuit 312 and the resistance adjustable circuit 313 are connected in parallel and then connected in series with the second analog battery unit 32, and the voltage sampling circuit 500 is electrically connected to two ends of the first battery equivalent circuit 312.
The first battery equivalent circuit 312 is used for equivalence with the power battery, wherein the first battery equivalent circuit 312 is capable of simulating and equating the resistance and the capacitance of the power battery.
In some embodiments, the first battery equivalent circuit 312 includes an equivalent capacitor and an equivalent resistor, and the equivalent capacitor is connected in parallel with the equivalent resistor, wherein the capacitance of the equivalent capacitor and the resistance of the equivalent resistor can be customized by a user according to engineering requirements, for example, the capacitance of the equivalent capacitor is 100uf, and the resistance of the equivalent resistor is 147 Ω.
The resistance value of the resistance adjustable circuit 313 can be changed by the resistance adjustable circuit 313, and because the first battery equivalent circuit 312 is connected in parallel with the resistance adjustable circuit 313, when the resistance value of the resistance adjustable circuit 313 is changed, the equivalent resistance formed by the first battery equivalent circuit 312 and the resistance adjustable circuit 313 is changed, so that the voltages at two ends of the first battery equivalent circuit 312 are changed, the first analog battery pack 311 can generate different analog voltages in an analog mode, and the voltage sampling circuit 500 can transmit the different analog voltages to the upper computer.
In some embodiments, the resistance tuning circuit 313 includes a fixed-resistance current-limiting resistor and a sliding resistor, and the sliding resistor has an adjustable resistance. The resistance of the current limiting resistor and the variable resistance range of the sliding variable resistance can be customized by a user according to engineering requirements, for example, the resistance of the current limiting resistor is 47 omega, and the variable resistance range of the sliding variable resistance is 0-1K omega.
In some embodiments, referring to fig. 5, the second analog battery unit 32 includes a plurality of second analog battery packs 321 with non-adjustable resistance values, the plurality of second analog battery packs 321 are connected in series and then connected in series with the first analog battery unit 31, and the voltage sampling circuit 500 is electrically connected to each of the second analog battery packs 321. The electric meter module 400 includes at least one second electric meter 412, the second electric meter 412 is electrically connected to the low voltage converting circuit 200, and the second electric meter 412 is connected in parallel to the corresponding second analog battery pack 321 for displaying the analog voltage of the corresponding second analog battery pack 321.
The high voltage dc power generated by the high voltage conversion circuit 100 enables each of the second analog battery packs 321 to generate an analog voltage, and since the resistance value of each of the second analog battery packs 321 is non-adjustable, the analog voltages of the second analog battery packs 321 are the same.
The low voltage dc power generated by the low voltage converting circuit 200 is used to drive the second electric meter 412 to operate normally. Since the analog voltages of the second analog battery packs 321 are the same, the present embodiment can select one second meter 412 to synchronously display the analog voltage of each second analog battery pack 321.
In some embodiments, the number of the second electricity meters 412 is also the same as the number of the second analog battery packs 321, and each of the second electricity meters 412 may display the analog voltage of the second analog battery pack 321 connected in parallel thereto.
The voltage sampling circuit 500 can transmit the analog voltage of each second analog battery pack 321 to the upper computer, and therefore, the embodiment can provide a plurality of same analog voltages for a plurality of test logics of one upper computer at a time, or the embodiment can provide a plurality of same analog voltages for the test logics of a plurality of upper computers at a time, which is beneficial to improving the test efficiency.
In some embodiments, the voltage sampling circuit includes a plurality of DP plugs, each of the DP plugs includes a plurality of voltage sampling lines, and each two voltage sampling lines are electrically connected to two ends of each analog battery pack, for example, each two voltage sampling lines are electrically connected to two ends of each first analog battery pack 311, and each two voltage sampling lines are electrically connected to two ends of each second analog battery pack 321. According to the embodiment, the plurality of first analog battery packs 311 and the plurality of second analog battery packs 321 can be separately sampled through the voltage sampling lines of the plurality of DP plugs, so that accidental short circuit of the connecting lines or electric shock accidents are prevented.
In some embodiments, referring to fig. 6, the power battery simulation apparatus further includes a high-voltage step adjustment circuit 600, and the high-voltage step adjustment circuit 600 is electrically connected to the high-voltage conversion circuit 100 and is configured to adjust a total voltage provided to the simulation battery module 300 according to the high-voltage dc power, so as to satisfy the requirement of simulating the voltage of the power battery in a wider voltage range.
In some embodiments, the high-voltage gear adjusting circuit 600 is a multi-gear switch, wherein each gear switch is connected with a corresponding gear resistor, when the multi-gear switch is switched to different switch positions, the high-voltage dc power supply of the high-voltage converting circuit 100 can output total voltages with different voltage values through the high-voltage gear adjusting circuit 600, for example, the high-voltage gear adjusting circuit 600 is an 8-gear switch, and by operating the 8-gear switch, the high-voltage dc power supply can output the total voltages between 254V and 430V through the high-voltage gear adjusting circuit 600.
In some embodiments, referring to fig. 7, the power battery simulation apparatus further includes a voltage fine-tuning circuit 700, wherein the voltage fine-tuning circuit 700 is electrically connected to the high-voltage converting circuit 600 for fine-tuning the total voltage provided to the simulation battery module 300 according to the high-voltage dc power. In the present embodiment, the voltage fine tuning circuit 700 can finely tune the total voltage provided to the analog battery module 300, so that the precise number of bits of the total voltage provided to the analog battery module 300 is more, for example, 254.11V or 429.56V can be obtained, which is beneficial to meeting the test scenario that the analog voltage has higher requirements.
In some embodiments, the voltage fine tuning circuit 700 may select a high resolution sliding rheostat.
In some embodiments, referring to fig. 8, the power battery simulation apparatus further includes an emergency stop switch 800, where the emergency stop switch 800 is electrically connected to the high voltage converting circuit 600 and the low voltage converting circuit 200, respectively, and is used to control on/off of power supply loops of the high voltage converting circuit 600 and the low voltage converting circuit 200. When the power supply circuit of the high voltage conversion circuit 600 and/or the power supply circuit of the low voltage conversion circuit 200 are/is in overvoltage or overcurrent, the emergency stop switch 800 automatically cuts off the power supply circuit of the high voltage conversion circuit 600 and/or the power supply circuit of the low voltage conversion circuit 200, so that the high voltage conversion circuit 600 and/or the low voltage conversion circuit 200 stop working, and the test safety is improved.
In some embodiments, referring to fig. 9, the power battery simulation apparatus further includes a total power meter 900, the total power meter 900 and the high voltage conversion circuit 600 for displaying the total voltage provided by the high voltage conversion circuit 600, so that a tester can rapidly adjust the total voltage according to the total voltage displayed by the total power meter 900, thereby improving the test efficiency.
Fig. 10 is provided in this embodiment to explain the working principle of the power battery simulator provided in this embodiment in detail, and it can be understood that the circuit structure shown in fig. 10 does not cause any improper limitation to the protection scope of the present invention, and the details are as follows:
as shown in fig. 10, the high voltage conversion circuit 100 can convert a 220V ac power of a commercial power into a 450V high voltage dc power, and when a power supply circuit of the high voltage conversion circuit 100 is in a conducting state, the indicator light 91 is turned on to indicate that the power battery simulator is in a working state. The total electricity meter 900 can display the total voltage provided by the high voltage conversion circuit 600.
The low voltage conversion circuit 200 can convert a 220V ac power of a commercial power into a 12V low voltage dc power to provide an operating power for the first and second electric meters 411 and 412, and the first and second electric meters 411 and 412 are put into an operating state.
The tester can operate the high-voltage gear adjusting circuit 600 to switch to a corresponding switch position and output a corresponding total voltage, wherein the value range of the total voltage is 254V to 430V. If the test scenario requires a more accurate total voltage, the tester may also operate the voltage fine tuning circuit 700 to slide the sliding rheostat of the voltage fine tuning circuit 700 to a corresponding position. In addition, in order to provide a current limiting effect, the power battery simulation device further comprises a current limiting resistor R1 for limiting and regulating the direct current provided by the high voltage conversion circuit 100.
The high voltage dc power source inputs a plurality of first analog battery packs 311 and a plurality of second analog battery packs 321 connected in series with each other, and in fig. 10, the total number of the first analog battery packs 311 and the second analog battery packs 321 is 96, that is, the power battery simulation apparatus uses 96 serial analog battery packs to simulate real power batteries.
As shown in fig. 10, the number of the first analog battery packs 311 is 4, and the number of the second analog battery packs 321 is 92, wherein since the both-end voltage of each of the second analog battery packs 321 is equal to the both-end voltage of the remaining second analog battery packs 321, for the convenience of brief representation in fig. 10, fig. 10 shows 4 second analog battery packs 321, and 92 second analog battery packs 321 are omitted.
As shown in fig. 10, each first analog battery pack 311 includes a first battery equivalent circuit and a resistance adjustable circuit, where the first battery equivalent circuit includes an equivalent capacitor and an equivalent resistor, the resistance adjustable circuit includes a current limiting resistor with a fixed resistance value and a sliding variable resistor, and the voltage across the first analog battery pack 311 is changed by changing the resistance value of the sliding variable resistor.
Each of the first analog battery packs 311 is connected in parallel to a first ammeter 411, and each of the first ammeters 411 may display an analog voltage of the first analog battery pack 311 connected in parallel thereto. The tester adjusts the sliding resistance of the corresponding first analog battery pack 311 in a targeted manner by observing the analog voltage of the corresponding first ammeter 411, so that the voltage across the corresponding first analog battery pack 311 reaches the tester's desired voltage.
The voltage sampling circuit 500 includes a first DP plug 51, a second DP plug 52, and a third DP plug 53, each of which includes 32 voltage sampling lines, wherein the first DP plug 51 is responsible for numbering voltage sampling lines # 1 to #32, the second DP plug 52 is responsible for numbering voltage sampling lines #33 to #64, and the third DP plug 53 is responsible for numbering voltage sampling lines #65 to # 96. In fig. 10, for the sake of simplicity of illustration, voltage sampling line #7 to voltage sampling line #96 are omitted from fig. 10. Every two voltage sampling lines are electrically connected with two ends of each analog battery pack, and two adjacent analog battery packs share one sampling resistor R2.
The voltage sampling lines # 1 to #5 of the first DP plug 51 can sample voltages at both ends of the 4 first analog battery packs 311, respectively, and transmit the sampled analog voltages to an upper computer.
The voltage sampling line #6 to the voltage sampling line # 32 of the first DP plug 51, the voltage sampling line #33 to the voltage sampling line #64 of the second DP plug 52, and the voltage sampling line #65 to the voltage sampling line #96 of the third DP plug 53 can sample voltages at both ends of the 92 second analog battery packs 321, respectively, and transmit the sampled analog voltages to an upper computer.
When the power supply circuit of the high voltage converting circuit 600 and/or the power supply circuit of the low voltage converting circuit 200 are/is over-voltage or over-current, the scram switch 800 automatically cuts off the power supply circuit of the high voltage converting circuit 600 and/or the power supply circuit of the low voltage converting circuit 200.
Generally, this embodiment can simulate the voltage of real power battery, need not to sample the voltage of real power battery, is favorable to developing the test operation and improves efficiency of software testing to this embodiment can also show analog voltage, so that the tester can carry out test work more pertinence, further improves tester's efficiency of software testing.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A power battery simulator, comprising:
the high-voltage conversion circuit is used for responding to the input of an external power supply and generating a high-voltage direct-current power supply;
a low voltage conversion circuit for generating a low voltage dc power in response to an input of the external power;
the analog battery module is electrically connected with the high-voltage conversion circuit and used for generating analog voltage according to the high-voltage direct-current power supply;
the electric meter module is respectively electrically connected with the low-voltage conversion circuit and the analog battery module, and is used for working according to the low-voltage direct-current power supply and displaying the analog voltage;
and the voltage sampling circuit is electrically connected with the analog battery module and is used for sampling the analog voltage and transmitting the analog voltage to an upper computer.
2. The device of claim 1, wherein the analog battery module comprises a first analog battery unit and a second analog battery unit, the first analog battery unit and the second analog battery unit are electrically connected with the high voltage conversion circuit after being connected in series, the electricity meter module is electrically connected with the first analog battery unit and the second analog battery unit respectively, and the voltage sampling circuit is electrically connected with the first analog battery unit and the second analog battery unit respectively, wherein the resistance value of the first analog battery unit is adjustable, and the resistance value of the second analog battery unit is not adjustable.
3. The apparatus of claim 2,
the first simulation battery unit comprises a plurality of first simulation battery packs with adjustable resistance values, the first simulation battery packs are connected in series and then connected in series with the second simulation battery unit, and the voltage sampling circuit is electrically connected with each first simulation battery pack;
the ammeter module includes a plurality of first ammeters, and is a plurality of first ammeters all with low pressure converting circuit electricity is connected, and every first ammeter with correspond first simulation group battery parallel connection, be used for showing correspond the analog voltage of first simulation group battery.
4. The apparatus of claim 3, wherein each of the first analog battery packs comprises a first battery equivalent circuit and a resistance adjustable circuit, the first battery equivalent circuit is connected in parallel with the resistance adjustable circuit and then connected in series with the second analog battery unit, and the voltage sampling circuit is electrically connected to two ends of the first battery equivalent circuit.
5. The apparatus of claim 3,
the second analog battery unit comprises a plurality of second analog battery packs with non-adjustable resistance values, the second analog battery packs are connected in series and then connected with the first analog battery unit in series, and the voltage sampling circuit is electrically connected with each second analog battery pack;
the ammeter module comprises at least one second ammeter, the second ammeter is electrically connected with the low-voltage conversion circuit, the second ammeter is connected with the corresponding second simulation battery pack in parallel, and the second ammeter is used for displaying the simulation voltage of the corresponding second simulation battery pack.
6. The apparatus of claim 5, wherein the voltage sampling circuit comprises a plurality of DP plugs, each DP plug comprising a plurality of voltage sampling lines, each two of the voltage sampling lines being electrically connected across each analog battery pack.
7. The device of any one of claims 1 to 6, further comprising a high voltage step adjustment circuit electrically connected to the high voltage conversion circuit for adjusting a total voltage supplied to the analog battery module according to the high voltage DC power supply.
8. The device of any one of claims 1 to 6, further comprising a voltage fine tuning circuit electrically connected to the high voltage conversion circuit for fine tuning a total voltage supplied to the analog battery module according to the high voltage DC power supply.
9. The device according to any one of claims 1 to 6, further comprising an emergency stop switch, wherein the emergency stop switch is electrically connected with the high voltage converting circuit and the low voltage converting circuit respectively, and is used for controlling the on-off of the power supply loops of the high voltage converting circuit and the low voltage converting circuit.
10. The device of any one of claims 1 to 6, further comprising a main meter, said main meter and said high voltage conversion circuit for displaying a total voltage provided by said high voltage conversion circuit.
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| CN202221325927.9U CN217467108U (en) | 2022-05-27 | 2022-05-27 | Power battery simulation device |
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| CN202221325927.9U CN217467108U (en) | 2022-05-27 | 2022-05-27 | Power battery simulation device |
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