CN215219098U - Electricity core module simulator - Google Patents
Electricity core module simulator Download PDFInfo
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- CN215219098U CN215219098U CN202121484364.3U CN202121484364U CN215219098U CN 215219098 U CN215219098 U CN 215219098U CN 202121484364 U CN202121484364 U CN 202121484364U CN 215219098 U CN215219098 U CN 215219098U
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Abstract
The utility model relates to an electric core module simulator, which comprises an output interface component and a voltage division circuit, wherein the voltage division circuit comprises a plurality of voltage division components which are connected in series, and the voltage division circuit is also connected with a power supply; each voltage division component is provided with a first branch and a third branch which are connected in parallel, the first branch is provided with a first branch fixed resistor and a first branch variable resistor which are connected in series, and one end of the low point of the first branch variable resistor is provided with a first branch analog voltage node; the third branch circuit is provided with a reference resistor, a reference voltage node is arranged at the high potential end of the reference resistor, and the first branch circuit analog voltage node and the reference voltage node are connected with an output interface component. Compared with the prior art, the beneficial effects of the utility model reside in that: the battery cell module simulator has the advantages of low cost, strong universality, simplicity in operation, safety and the like, and can accurately simulate voltage output and temperature output.
Description
Technical Field
The utility model relates to a battery analog system field, concretely relates to electricity core module simulator.
Background
The development of the current electric automobile is a necessary trend of the future development of the automobile. In an electric vehicle, a Battery Management System (BMS) is one of the core components. The battery management system is connected with an actual battery pack and used for detecting information such as cell voltage and temperature in real time. The stability and safety of the battery management system are important prerequisites for ensuring the safety of the electric automobile.
During development, testing and fault analysis of the battery management system, signals of voltage, temperature and the like need to be input externally. If the real battery pack is directly adopted for signal input, the method has the following disadvantages:
first, voltage regulation is difficult. The actual voltage of the battery pack changes with the change of the electric quantity, and the desired voltage input cannot be quickly reached.
Secondly, specific voltage differences at the cell level cannot be realized. It is very difficult to realize a specific cell voltage difference when the battery pack is charged and discharged as a unified whole.
Thirdly, potential safety hazards exist. Batteries have special requirements for storage and operation, and improper storage and operation may cause safety issues.
Therefore, it is necessary to develop a safe and easy-to-operate battery simulation system. There are three broad categories of solutions in the prior art:
the first type of solution is to simulate the output of the battery pack by a large voltage-current output cabinet (e.g., a hardware-in-loop test device).
The second type of solution is to simulate the actual signal by means of a CAN signal.
The third type of solution is to simulate the input of signals corresponding to the actual situation by a small battery simulation system.
However, these three general solutions have certain drawbacks, which are:
the equipment used in the first type of scheme is equipment with higher special degree, has high cost and larger site area requirement, can be used only in a specific link in the automobile development process, and is not suitable for wide application. For example, the hardware used in the ring test is large, has fixed experiment places and experiment requirements, and cannot be conveniently obtained in normal work. Meanwhile, the interface of the hardware in the ring test equipment is fixed, and each modification needs to be completed by a supplier, so that a great deal of time and cost are required.
The second type of solution is simple and inexpensive to operate, but it is not really a complete test of the battery management system, and therefore the test results are not representative. The situation of the battery management system cannot be reflected comprehensively and truly, and particularly, the fault reason cannot be found out timely and effectively in fault analysis.
The third category of solutions is a current trend. Some of the following documents are presented.
The utility model discloses a power battery analog system for BMS test platform that application number is 201910682574.4 and name is a BMS test platform and control method's utility model patent application has announced that the commonality is strong, with low costs power battery analog system for BMS test platform. However, the utility model discloses a battery pack of various situations is simulated through the switch combination to the emphasis, and voltage simulation precision at electric core level is not enough, can not high accuracy adjustment voltage output.
The utility model patent with application number 201821006795.7 and named as a cell simulator provides a cell simulator, but the cell simulation can not satisfy the condition that BMS test was used. One battery pack is usually formed by connecting dozens of hundreds of battery cells in series, and in the case, dozens of hundreds of single battery simulators are required to be connected in series, so that the actual operation and use are inconvenient.
Therefore, it is urgently needed to develop a cell module simulator with low cost, high simulation precision, wide application and strong applicability.
In view of the above-mentioned drawbacks, the authors of the present invention have finally obtained the present invention through long-term research and practice.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention adopts a technical solution in that the present invention provides an electrical core module simulator, which includes an output interface assembly and a voltage dividing circuit, wherein the voltage dividing circuit includes a plurality of voltage dividing assemblies connected in series, and the voltage dividing circuit is further connected to a power supply; each voltage division component is provided with a first branch and a third branch which are connected in parallel, the first branch is provided with a first branch fixed resistor and a first branch variable resistor which are connected in series, and one end of the low point of the first branch variable resistor is provided with a first branch analog voltage node; the third branch circuit is provided with a reference resistor, a reference voltage node is arranged at the high potential end of the reference resistor, and the first branch circuit analog voltage node and the reference voltage node are connected with an output interface component.
Preferably, the electric core module simulator further comprises a plurality of groups of temperature adjusting resistors, and the temperature adjusting resistors are used for simulating temperature change.
Preferably, each voltage dividing assembly is further provided with a second branch, the second branch is connected with the first branch in parallel, the second branch is provided with a second branch fixed resistor and a second branch variable resistor which are connected in series, and a second branch analog voltage node is arranged at one end of a low point of the second branch variable resistor.
Preferably, the electric core module simulator further comprises an operation panel, a plurality of regulators of variable resistors are arranged on the operation panel, a first set of regulators of variable resistors are arranged on the operation panel, each first set of regulators of variable resistors comprises a plurality of regulators of voltage regulating resistors and a plurality of regulators of temperature regulating resistors, the regulators of voltage regulating resistors in the regulators of the first set of variable resistors correspond to the first branch variable resistors one to one, and the regulators of temperature regulating resistors in the regulators of the first set of variable resistors correspond to the first set of temperature regulating resistors one to one.
Preferably, an operation panel of the cell module simulator is provided with a second group of regulators of variable resistors, each second group of regulators of variable resistors includes a plurality of regulators of voltage regulation resistors and a plurality of regulators of temperature regulation resistors, the regulators of voltage regulation resistors in the regulators of the second group of variable resistors correspond to the second branch variable resistors one to one, and the regulators of temperature regulation resistors in the regulators of the second group of variable resistors correspond to the second group of temperature regulation resistors one to one.
Preferably, the number of the voltage dividing assemblies is 14, the number of the first branches is 14, the number of the second branches is 14, the number of the third branches is 14, and the numbers of the first branch fixed resistor, the first branch variable resistor, the second branch fixed resistor, the second branch variable resistor, and the reference resistor are 14 respectively; the number of the first branch circuit analog voltage nodes, the number of the reference voltage nodes and the number of the second branch circuit analog voltage nodes are 14 respectively.
Preferably, the output interface assembly comprises a plurality of output interfaces, each output interface comprises a first type output interface, a second type output interface and a third type output interface, and the first type output interface is respectively connected with the first branch analog voltage node and the first group of temperature regulating resistor loops; the second type output interface is respectively connected with a second branch circuit analog voltage node and a second group of temperature regulating resistor loops; the third type output interface is connected with a reference voltage node.
Preferably, the number of pins of any one output interface is equal to the number of the voltage dividing components plus the number of the temperature adjusting resistors included in each group of temperature adjusting resistors plus 2.
Preferably, the number of the voltage dividing assemblies is 14, the number of the temperature adjusting resistors included in each group of temperature adjusting resistors is two, and the number of pins of the output interface is 18; 18 pins of the first class output interface are respectively connected with 14 first branch circuit analog voltage nodes, a grounding terminal, a first group of first temperature regulating resistor loops, a first group of second temperature regulating resistor loops and a temperature regulating resistor grounding terminal; and 18 pins of the second type output interface are respectively connected with 14 second branch circuit analog voltage nodes, a grounding terminal, a second group of first temperature regulating resistor loops, a second group of second temperature regulating resistor loops and a temperature regulating resistor grounding terminal.
Preferably, the output interface assembly includes 16 output interfaces, and the first output interface and the second output interface are output interfaces of a first type. The third output interface and the fourth output interface are second-class output interfaces. The fifth to sixteenth output interfaces are output interfaces of the third type.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model provides an electricity core module simulator has advantages such as low cost, commonality are strong, easy operation, safety. The concrete expression is as follows:
1. the cell module simulator outputs voltage in a high-precision resistance voltage division mode, so that the cost of the simulator is greatly reduced;
2. the cell module simulator simulates the change of voltage by adopting a high-precision variable resistor, and can conveniently acquire the desired cell voltage output;
3. the battery cell module simulator adopts a high-precision variable resistor to simulate temperature change, and the temperature change is basically the same as the change of a thermistor of an actual battery cell module;
4. the cell module simulator adopts a method of combining the reference resistor, the fixed resistor and the variable resistor, and overcomes the influence of the resistance value change of the variable resistor on the voltage of the whole circuit; since the reference resistance is very different from the fixed resistance, the influence of the variation of the variable resistance on the whole circuit is negligible.
5. This electricity core module simulator simulates the output of a plurality of battery modules through a set of high accuracy resistance partial pressure, when convenient operation, has also reduced the volume, the cost is reduced.
6. This electricity core module simulator passes through output conversion interface, and applicable in multiple motorcycle type has better suitability.
Drawings
Fig. 1 is a schematic structural diagram of an operation panel and an output interface assembly of a cell module simulator according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a voltage dividing circuit of the electric core module simulator in the first embodiment of the present invention.
Description of the main element symbols:
the circuit comprises an operation panel 1, an output interface component 2, a voltage division circuit 3, a first group of variable resistance regulators 10, a second group of variable resistance regulators 11, a voltage regulation resistance regulator 12, a temperature regulation resistance regulator 13, a first voltage division component 31 and an Nth voltage division component 32.
Detailed Description
The above and further features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Example one
The utility model provides an electricity core module simulator, it includes operating panel 1, output interface subassembly 2, bleeder circuit 3 and power port.
The operation panel 1 is provided with a plurality of regulators of the variable resistor, and each regulator controls the resistance value of the corresponding variable resistor. Preferably, the operation panel 1 is divided into two upper and lower sub-regions, wherein a first group of variable resistor actuators 10 is disposed in the upper region, and a second group of variable resistor actuators 11 is disposed in the lower region.
The first set of variable resistance regulators 10 includes a number of voltage regulating resistance regulators 12 and a number of temperature regulating resistance regulators 13. In the present embodiment, the number of voltage-adjusting-resistor regulators 12 in the first group of variable-resistor regulators 10 is 14, and the number of temperature-adjusting-resistor regulators 13 in the first group of variable-resistor regulators 10 is 2.
The second set of variable resistance regulators 11 also includes a number of voltage regulating resistance regulators 12 and a number of temperature regulating resistance regulators 13. In the present embodiment, the number of voltage-adjusting-resistor regulators 12 in the second group of variable-resistor regulators 11 is 14, and the number of temperature-adjusting-resistor regulators 13 in the second group of variable-resistor regulators 11 is 2.
The voltage dividing circuit 3 includes N voltage dividing elements, where N is a positive integer. The N voltage dividing components include N voltage dividing components from the first voltage dividing component 31 to the nth voltage dividing component 32. The N voltage division assemblies are connected in series, one end of the first voltage division assembly 31 is connected with the second voltage division assembly, and the other end of the first voltage division assembly is grounded. One end of the Nth voltage division component 32 is connected with the Nth-1 voltage division component, and the other end is connected with a power supply.
Each voltage division component comprises three parallel branches, namely a first branch, a second branch and a third branch. The first branch is provided with a first branch variable resistor and a first branch fixed resistor which are sequentially connected in series. The second branch is provided with a second branch variable resistor and a second branch fixed resistor which are sequentially connected in series. And a reference resistor is arranged on the third branch circuit, and the reference resistor is a high-precision resistor. The reference voltage is taken from the high potential end of the reference resistor. The first branch analog voltage is obtained from the high potential end of the first branch fixed resistor, namely the low potential end of the first branch variable resistor. And the second branch analog voltage is obtained from the high potential end of the second branch variable resistor, namely the low potential end of the second branch variable resistor. The first branch fixed resistor, the first branch variable resistor, the second branch variable resistor and the second branch variable resistor are high-precision resistors.
Since the voltage dividing assembly includes N, there are N first branches, which are the first branch of the first voltage dividing assembly 31, the first branch of the second voltage dividing assembly … …, and the first branch of the nth voltage dividing assembly 32. Every is equipped with first branch variable resistance and first branch fixed resistance on the first branch, and first branch variable resistance and first branch fixed resistance are established ties each other. The N first branches have N first branch variable resistors, which are the first branch variable resistors R of the first voltage division component 311-v1The first branch variable resistor R of the second voltage division component1-v2… …, the Nth voltage dividing component 32 has a variable first branchResistance R1-v. In addition, the N first branches have N first branch fixed resistors, which are the first branch fixed resistors R of the first voltage division component 31 respectively1-fThe first branch fixed resistor R of the second voltage division component1-f2… …, the Nth voltage dividing component 32 has a first branch fixed resistor R1-f. The first branch of each voltage division component can extract corresponding first branch analog voltage. The number of the first branch analog voltages is N, and the first branch analog voltages V comprise a first voltage division component 311-1The first branch circuit analog voltage V of the second voltage division component1-2… …, the Nth voltage dividing component 32 has a first branch circuit analog voltage V1-n. The number of the first branch analog voltage nodes for extracting the first branch analog voltage is N. The first branch analog voltage node of the first voltage division component 31 is located at the first branch fixed resistor R of the first voltage division component 311-f1And a first shunt variable resistor R of the first voltage-dividing assembly 311-v1In the meantime. The first branch analog voltage node of the Nth voltage dividing component 32 is located at the first branch fixed resistor R of the Nth voltage dividing component 321-fAnd the first branch variable resistor R of the Nth voltage division component 321-vnIn the meantime.
Since the voltage dividing assembly includes N, there are N second branches, which are the second branch of the first voltage dividing assembly 31, the second branch of the second voltage dividing assembly, … …, and the second branch of the nth voltage dividing assembly 32. And each second branch is provided with a second branch variable resistor and a second branch fixed resistor which are connected in series. The N second branches have N second branch variable resistors, which are the second branch variable resistors R of the first voltage division component 31 respectively2-v1A second branch variable resistor R of the second voltage division component2-v2… …, the Nth voltage dividing component 32 and the variable resistor R of the second branch2-vn. In addition, the N second branches have N second branch fixed resistors, which are the second branch fixed resistors R of the first voltage division component 31 respectively2-f1A second branch fixed resistor R of the second voltage division component2-f2… …, the second branch fixed resistor R of the Nth voltage division component 322-fn. The second branch of each voltage division component can extract corresponding second branch analog circuitAnd (6) pressing. The number of the second branch analog voltages is N, and the second branch analog voltages V comprise a first voltage division component 312-1. Analog voltage V of second branch of second voltage division component2-2… …, the Nth voltage dividing component 32 has a second branch analog voltage V2-n. The number of the second branch circuit analog voltage nodes for extracting the second branch circuit analog voltage is N. The analog voltage node of the second branch of the first voltage division component 31 is located at the fixed resistor R of the second branch of the first voltage division component 312-f1And a second branch variable resistor R of the first voltage division component 312-vIn the meantime. The second branch analog voltage node of the Nth voltage dividing component 32 is located at the second branch fixed resistor R of the Nth voltage dividing component 322-fnAnd the second branch variable resistor R of the Nth voltage division component 322-vnIn the meantime.
Since the voltage dividing assemblies include N, there are N third branches, which are the third branch of the first voltage dividing assembly 31, the third branch of the second voltage dividing assembly, … …, and the third branch of the nth voltage dividing assembly. Each third branch has a reference resistor, and the N third branches have N reference resistors, which are reference resistors R of the first voltage division component 31b1A reference resistor R of the second voltage division componentb2… …, Nth voltage dividing component reference resistance Rbn. The third branch of each voltage division component can extract a corresponding reference voltage. The reference voltages are N in total and comprise a reference voltage V of the first voltage division component 31b-1A reference voltage V of the second voltage division componentb-2… … Nth voltage dividing component 32 reference voltage Vb-n. The number of reference voltage nodes for taking the reference voltage is N. The reference voltage node of the first voltage division component 31 is located at the reference resistor R of the first voltage division component 31b1To the high potential terminal of (3). The reference voltage node of the Nth voltage dividing component 32 is located at the reference resistor R of the Nth voltage dividing component 32bnTo the high potential terminal of (3).
Because the reference resistor is small, each variable resistor is connected with a fixed resistor with a large resistance in series and forms a relatively stable voltage division system together with the reference resistor, so that the influence of the change of the variable resistor on the whole circuit is small to be negligible.
Preferably, N in this embodiment is 14. The voltage dividing component comprises 14 voltage dividing components, therefore, the voltage dividing component canCan provide a reference voltage V of the first voltage division componentb-1To 14 th voltage dividing component reference voltage Vb-14There are 14 reference voltages. Can also provide the first branch analog voltage V of the first voltage division component1-1To the 14 th voltage-dividing component first branch circuit analog voltage V1-14There are 14 first branch analog voltages. Similarly, the second branch analog voltage V of the first voltage division component can also be provided2-1To the 14 th voltage-dividing component second branch analog voltage V2-14And 14 second branches simulate voltage.
First branch road variable resistance and second branch road variable resistance are variable resistance, through adjusting variable resistance, the utility model provides an electric core module simulator can output the analog voltage of change. The output analog voltages are respectively the first branch circuit analog voltage V of the first voltage division component1-1To the 14 th voltage-dividing component first branch circuit analog voltage V1-14And the first voltage division component and the second branch analog voltage V2-1To the 14 th voltage-dividing component second branch analog voltage V2-1。
14 voltage regulating resistor regulators 12 in the first group of variable resistor regulators 10 are respectively connected with the first branch variable resistor R of the first voltage division component1-v1The first branch variable resistor R of the second voltage division component1-v2… …, 14 th voltage dividing component first branch variable resistance R1-v1And the regulators are in one-to-one correspondence and are used for respectively regulating the variable resistors of the first branches. And generating variable voltage output of the first branch circuit through the change of the resistance value, simulating the voltage change of the battery cells, and simulating the output of 14 battery cells at most.
The 14 voltage-adjusting resistors 12 in the second group of variable resistor regulators 11 are respectively connected with the first voltage-dividing assembly second branch variable resistor R2-v1A second branch variable resistor R of the second voltage division component2-v2… …, 14 th voltage dividing component second branch variable resistor R2-v14And the regulators are in one-to-one correspondence and are used for respectively regulating the variable resistors of the second branches. And generating variable voltage output of the second branch circuit through the change of the resistance value, simulating the voltage change of the battery cells, and simulating the output of 14 battery cells at most.
The utility model disclosesThe battery cell module simulator further comprises P groups of temperature adjusting resistors, and each group of temperature adjusting resistors comprises M temperature adjusting resistors. The regulator of the temperature regulating resistor is arranged on the operation panel 1, and in the embodiment, the temperature regulating resistor is preferably two groups, and each group has two, four in total, and is respectively a first group of first temperature regulating resistors R1-t1A first group of second temperature regulating resistors R1-t2A second group of first temperature adjusting resistors R2-t1A second group of second temperature adjusting resistors R2-t2。
The number of the temperature adjusting resistance adjusters 13 in the first group of variable resistance adjusters 10 is 2. The temperature adjusting resistor adjuster 13 of the first group of variable resistor adjusters 10 is respectively connected with the first group of first temperature adjusting resistors R1-t1And a first group of second temperature adjusting resistors R1-t2And (7) corresponding. The number of the temperature adjusting resistance adjusters 13 in the second group of variable resistance adjusters 11 is 2. The temperature adjusting resistor adjuster 13 of the second group of variable resistors 11 is respectively connected with the second group of first temperature adjusting resistors R2-t1And a second set of second temperature-regulating resistors R2-t2And correspond to each other. The change of the thermistor is simulated through the change of the resistance value.
The output interface component 2 comprises a plurality of output interfaces, and the number of pins of the output interfaces is N + M + 2. The output interfaces comprise a first type output interface, a second type output interface and a third type output interface.
In this embodiment, preferably, the number of pins of the output interface is 18. Namely, any one of the interfaces including the first-class output interface, the second-class output interface and the third-class output interface is 18 pins. The upper row of the output interface is respectively provided with a first pin to a ninth pin from left to right, and the lower row of the output interface is respectively provided with a tenth pin to an eighteenth pin from left to right.
18 pins of the first class output interface are respectively connected with 14 first branch circuit analog voltage nodes, a grounding end and a first group of first temperature regulating resistors R1-t1Loop T1A first group of second temperature regulating resistors R1-t2Loop T2And a temperature regulating resistor grounding terminal.
Second class18 pins of the output interface are respectively connected with 14 second branch circuit analog voltage nodes, a grounding terminal and a second group of first temperature regulating resistors R2-t1Loop T1A second group of second temperature adjusting resistors R2-t2Loop T2And a temperature regulating resistor grounding terminal.
18 pins of the third class output interface are respectively connected with 14 reference voltage nodes, a grounding terminal and a temperature resistance loop T1Temperature resistance loop T2。
Further preferably, the output interface assembly 2 comprises 16 output interfaces, and the first output interface and the second output interface are output interfaces of the first type. The third output interface and the fourth output interface are second-class output interfaces. The fifth to sixteenth output interfaces are output interfaces of the third type. 16 interfaces can simulate 16 modules, and the voltage and temperature output of 224 string cells at most. The first output interface and the second output interface correspond to the first branch variable resistor and the first group of temperature adjusting resistors and provide two groups of same voltage and temperature outputs. The third output interface and the fourth output interface correspond to the second branch circuit variable resistor and the second group of temperature adjusting resistors and provide two groups of same voltage and temperature outputs. The fifth to sixteenth output interfaces correspond to the reference resistors and provide 12 sets of the same reference voltage and temperature outputs.
Compared with the prior art, the utility model provides an electricity core module simulator has advantages such as low cost, commonality are strong, easy operation, safety. The concrete expression is as follows:
1. the cell module simulator outputs voltage in a high-precision resistance voltage division mode, so that the cost of the simulator is greatly reduced;
2. the cell module simulator simulates the change of voltage by adopting a high-precision variable resistor, and can conveniently acquire the desired cell voltage output;
3. the battery cell module simulator adopts a high-precision variable resistor to simulate temperature change, and the temperature change is basically the same as the change of a thermistor of an actual battery cell module;
4. the cell module simulator adopts a method of combining the reference resistor, the fixed resistor and the variable resistor, and overcomes the influence of the resistance value change of the variable resistor on the voltage of the whole circuit; since the reference resistance is very different from the fixed resistance, the influence of the variation of the variable resistance on the whole circuit is negligible.
5. This electricity core module simulator simulates the output of a plurality of battery modules through a set of high accuracy resistance partial pressure, when convenient operation, has also reduced the volume, the cost is reduced.
6. This electricity core module simulator passes through output conversion interface, and applicable in multiple motorcycle type has better suitability.
Example two
The difference between the present embodiment and the first embodiment is:
compared with the first embodiment, the present embodiment can be further simplified, each voltage dividing component in the first embodiment can be simplified, and the second branch and the second group of first temperature adjusting resistors R in each voltage dividing component are eliminated2-t1Loop, second set of second temperature regulating resistors R2-t2And (4) a loop. The first branch and the third branch are kept in each voltage division component. In addition, a first group of first temperature regulating resistors R is reserved1-t1Loop, first set of second temperature regulating resistors R1-t2And (4) a loop. As the second branch is removed, the output interface of the second type is also removed accordingly. The second set of variable resistance regulators 11 is removed accordingly. The pin count of each output interface may remain constant.
EXAMPLE III
The difference between the present embodiment and the first embodiment is:
compare with embodiment one, this embodiment can further complicate, can increase a fourth branch road with each partial pressure subassembly in embodiment one on the basis of original three branch roads, and the fourth branch road all is connected in parallel with first branch road, second branch road and third branch road. Since the voltage dividing assembly includes N, there are N fourth branches, which are the fourth branch of the first voltage dividing assembly 31, the fourth branch of the second voltage dividing assembly … …, and the fourth branch of the nth voltage dividing assembly 32. Each fourth branch is provided with a fourth branch variable resistor and a fourth branch fixed resistor, and the fourth branch variable resistor and the fourth branch are fixedThe fixed resistors are connected in series. The N fourth branches have N fourth branch variable resistors, which are the fourth branch variable resistors R of the first voltage division component 31 respectively4-v1A fourth branch variable resistor R of the second voltage division component4-v2… …, the Nth voltage dividing component 32 and the fourth branch variable resistor R4-vn. In addition, the N fourth branches have N fourth branch fixed resistors, which are the fourth branch fixed resistors R of the first voltage division component 31 respectively4-f1A fourth branch fixed resistor R of the second voltage division component4-f2… …, the Nth voltage dividing component 32 and the fourth branch fixed resistor R4-fn. The first branch of each voltage division component can extract corresponding fourth branch analog voltage. The number of the fourth branch analog voltages is N, and the fourth branch analog voltages V comprise a first voltage division component 314-1The fourth branch analog voltage V of the second voltage division component4-2… …, the Nth voltage dividing component 32 and the fourth branch analog voltage V4-n. The number of the fourth branch analog voltage points for extracting the fourth branch analog voltage is N. The analog voltage point of the fourth branch of the first voltage division component 31 is located at the fixed resistor R of the fourth branch of the first voltage division component 314-f1And a fourth branch variable resistor R of the first voltage division component 314-v1In the meantime. The fourth branch analog voltage point of the nth voltage divider 32 is located at the fourth branch fixed resistor R of the nth voltage divider 324-fnAnd the first branch variable resistor R of the Nth voltage division component 324-vnIn the meantime.
Correspondingly, a set of temperature adjusting resistors is added. And a set of variable resistance regulators 11 is added, that is, a fourth set of variable resistance regulators 11, where the fourth set of variable resistance regulators 11 corresponds to the fourth branch variable resistance.
In addition, a class I output interface is added and is a class IV output interface, pins of the class IV output interface are respectively connected with the analog voltage node of the second branch circuit, the grounding end and the fourth group of the first temperature regulating resistor R4-t1Loop T1And a fourth group of second temperature regulating resistors R4-t2Loop T2And a temperature regulating resistor grounding terminal. The number of output interfaces of the fourth type is preferably 2.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative, not limiting. The utility model discloses in all can change to some extent structure and connected mode etc. of each part all be in the utility model discloses equal transform and the improvement of going on technical scheme's the basis all should not get rid of the utility model discloses an outside the protection scope.
Claims (10)
1. The battery cell module simulator is characterized by comprising an output interface assembly and a voltage division circuit, wherein the voltage division circuit comprises a plurality of voltage division assemblies which are connected in series, and the voltage division electrodes are also connected with a power supply; each voltage division component is provided with a first branch and a third branch which are connected in parallel, the first branch is provided with a first branch fixed resistor and a first branch variable resistor which are connected in series, and one end of the low point of the first branch variable resistor is provided with a first branch analog voltage node; the third branch circuit is provided with a reference resistor, a reference voltage node is arranged at the high potential end of the reference resistor, and the first branch circuit analog voltage node and the reference voltage node are connected with an output interface component.
2. The cell module simulator of claim 1, further comprising a plurality of sets of temperature regulating resistors, the temperature regulating resistors configured to simulate temperature variations.
3. The cell module simulator according to claim 2, wherein each of the voltage dividing assemblies further includes a second branch, the second branch is connected in parallel with the first branch, the second branch is provided with a second branch fixed resistor and a second branch variable resistor, which are connected in series with each other, and a second branch analog voltage node is provided at one end of the second branch variable resistor at a low point.
4. The cell module simulator according to claim 2 or 3, further comprising an operation panel, wherein the operation panel is provided with a plurality of regulators of variable resistors, the operation panel is provided with a first set of regulators of variable resistors, the first set of regulators of variable resistors include a plurality of regulators of voltage regulating resistors and a plurality of regulators of temperature regulating resistors, the regulators of voltage regulating resistors in the first set of regulators of variable resistors are in one-to-one correspondence with the first branch variable resistors, and the regulators of temperature regulating resistors in the regulators of first set of variable resistors are in one-to-one correspondence with the first set of temperature regulating resistors.
5. The cell module simulator according to claim 3, wherein a second set of regulators of variable resistors is provided on an operation panel of the cell module simulator, the second set of regulators of variable resistors includes a plurality of regulators of voltage regulating resistors and a plurality of regulators of temperature regulating resistors, the regulators of voltage regulating resistors in the second set of regulators of variable resistors correspond to the second branch variable resistors one to one, and the regulators of temperature regulating resistors in the regulators of the second set of variable resistors correspond to the second set of temperature regulating resistors one to one.
6. The cell module simulator of claim 3, wherein the number of the voltage dividing assemblies is 14, the number of the first branches is 14, the number of the second branches is 14, the number of the third branches is 14, and the numbers of the first branch fixed resistors, the first branch variable resistors, the second branch fixed resistors, the second branch variable resistors and the reference resistors are 14 respectively; the number of the first branch circuit analog voltage nodes, the number of the reference voltage nodes and the number of the second branch circuit analog voltage nodes are 14 respectively.
7. The cell module simulator of claim 1, wherein the output interface assembly includes a plurality of output interfaces, the output interfaces include a first type of output interface, a second type of output interface, and a third type of output interface, and the first type of output interface is respectively connected to the first branch analog voltage node and the first set of temperature-regulating resistor loops; the second type output interface is respectively connected with a second branch circuit analog voltage node and a second group of temperature regulating resistor loops; the third type output interface is connected with a reference voltage node.
8. The cell module simulator of claim 7, wherein the number of pins of any one of the output interfaces is equal to the number of the voltage dividing assemblies plus the number of the temperature adjusting resistors included in each group of temperature adjusting resistors plus 2.
9. The cell module simulator according to claim 8, wherein the number of the voltage dividing assemblies is 14, the number of the temperature adjusting resistors included in each group of the temperature adjusting resistors is two, and the number of pins of the output interface is 18; 18 pins of the first class output interface are respectively connected with 14 first branch circuit analog voltage nodes, a grounding terminal, a first group of first temperature regulating resistor loops, a first group of second temperature regulating resistor loops and a temperature regulating resistor grounding terminal; and 18 pins of the second type output interface are respectively connected with 14 second branch circuit analog voltage nodes, a grounding terminal, a second group of first temperature regulating resistor loops, a second group of second temperature regulating resistor loops and a temperature regulating resistor grounding terminal.
10. The cell module simulator of claim 7, wherein the output interface assembly includes 16 output interfaces, the first output interface and the second output interface are of a first type, the third output interface and the fourth output interface are of a second type, and the fifth output interface to the sixteenth output interface are of a third type.
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