CN213354229U - Battery control circuit, battery management system and electric automobile - Google Patents
Battery control circuit, battery management system and electric automobile Download PDFInfo
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- CN213354229U CN213354229U CN202021664446.1U CN202021664446U CN213354229U CN 213354229 U CN213354229 U CN 213354229U CN 202021664446 U CN202021664446 U CN 202021664446U CN 213354229 U CN213354229 U CN 213354229U
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Abstract
The utility model belongs to the technical field of the new energy automobile, especially, relate to a battery control circuit, battery management system, electric automobile. The battery control circuit includes a base module; the charging and heating module is provided with an input port, the foundation module is provided with a power transmission port, the charging and heating module is connected with the power transmission port of the foundation module through the input port, and the charging and heating module is connected to the foundation module in a detachable and replaceable manner; the switch circuit module is used for controlling the on-off of the battery control circuit; the base module is also provided with an access terminal which is in adaptive connection with the matching module, the matching module is detachably connected to the base module, and the matching module is used for collecting and processing one or more of temperature information, current information and voltage information of the power supply. Use the technical scheme of the utility model BDU among the prior art of having solved is to specific motorcycle type customization development, and the commonality is poor, problem that design, manufacturing cost are high.
Description
Technical Field
The utility model belongs to the technical field of the new energy automobile, especially, relate to a battery control circuit, battery management system, electric automobile.
Background
The battery control circuit (BDU) provides functions of charge and discharge control, high-voltage component electrification control, current overload short-circuit protection, high-voltage sampling, low-voltage control and the like for a high-voltage system of the new energy automobile, and the operation of the high-voltage system is protected and monitored.
However, through the disassembly and analysis of various main vehicle types BDU in the market, the following two defects are found:
1) BDU designs of different vehicle types are all customized development, are of an integral structure, cannot be disassembled for maintenance, can only be integrally disassembled and replaced, and are poor in universality;
2) the power battery models of the same vehicle type are different, the BDU carries out different data monitoring to different models of batteries, the existing BDU can not be compatible to adapt to the batteries of various models, and the universality is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery control circuit, battery management system, electric automobile, the BDU who aims at solving among the prior art is to customizing the development to specific motorcycle type, specific battery model, and overall structure is difficult to dismantle the maintenance, the poor problem of commonality.
In order to achieve the above object, the utility model adopts the following technical scheme: a battery control circuit, comprising: the base module is provided with two battery connecting ends and is electrically connected with a power supply through the two battery connecting ends; the charging and heating module is provided with an input port, the base module is provided with a power transmission port, the charging and heating module is connected with the power transmission port of the base module through the input port, the charging and heating module is detachably connected to the base module, and the charging and heating module is used for charging and heating a power supply; the switch circuit module is used for controlling the on-off of the battery control circuit; the base module is also provided with an access terminal which is in adaptive connection with the matching module, the matching module is detachably connected to the base module, and the matching module is used for collecting and processing one or more of temperature information, current information and voltage information of the power supply.
The battery control circuit adopting the technical scheme has the advantages that the battery control circuit can be designed, produced and assembled according to different vehicle types, each module can be matched according to the different vehicle types, the universality of the battery control circuit is high, and the follow-up maintenance cost is low.
Further, the selective matching module comprises an IVT module, the IVT module is provided with a positive connecting terminal and a negative connecting terminal, the base module is respectively provided with a positive connecting terminal and a negative connecting terminal which are in adaptive connection with the positive connecting terminal and the negative connecting terminal, and the IVT module is used for collecting and processing voltage information and current information of the power supply.
Adopt this technical scheme, carry out the independent design of modularization mode with the partial function of BMS among the battery management system of prior art to effectively reduce the utility model provides a battery management system's volume satisfies the lightweight demand.
Furthermore, a shunt resistor is connected in series with a battery cathode connecting end of the two battery connecting ends, a current collecting terminal and a temperature collecting terminal are led out of the shunt resistor, and the current collecting terminal and the temperature collecting terminal are respectively and electrically connected with the battery connecting ends.
By adopting the technical scheme, the working current and the current temperature of the power supply are collected and detected, and the working state of the power supply is monitored in real time.
Furthermore, the charging heating module comprises a quick charging loop, a slow charging loop and a heating loop, and two ends of the quick charging loop, the slow charging loop and the heating loop are respectively connected to a power transmission positive terminal and a power transmission negative terminal of the power transmission port.
By adopting the technical scheme, when the power supply is charged, the power supply can be heated according to the weather temperature to ensure the normal charging of the power supply, and the quick charging loop can be flexibly adopted to carry out quick charging or the slow charging loop can be flexibly adopted to carry out normal charging according to the high and low voltages of the adopted charging pile.
Furthermore, the battery anode connecting end, the quick charge loop, the slow charge loop and the heating loop are all connected in series with a fuse.
By adopting the technical scheme, the corresponding loop is protected by utilizing the fuse.
Furthermore, the switch circuit module comprises a plurality of relay switches, and the quick charge circuit, the slow charge circuit and the heating circuit are all connected in series with the relay switches.
By adopting the technical scheme, the corresponding loop is protected by utilizing the relay switch, and meanwhile, the relay switch is controlled by the controller to conduct the corresponding loop according to the preset working requirement to work.
Furthermore, the selective matching module comprises an IMD module, the IMD module is provided with a signal connecting port, the basic module and an access terminal which is in adaptive connection with the signal connecting port are signal access ports, and the IMD module is used for carrying out insulation detection on a power supply.
By adopting the technical scheme, the power supply is subjected to insulation detection and self-processing.
Furthermore, each connecting end in the battery control circuit is locked and assembled in a screw locking mode.
By adopting the technical scheme, the contact resistance between the terminals can be reduced, and the resistance heat generation is reduced.
According to another aspect of the utility model, a battery management system is provided. The battery management system comprises a power supply, a controller and a battery control circuit, wherein the battery control circuit is the battery control circuit; the controller controls the basic module to output current, the controller controls the charging and heating module to charge and heat the power supply, and the power supply supplies power to the matching module; the controller controls the battery control circuit through the switch circuit module.
The battery control circuit which is designed, produced and assembled by adopting the technical scheme is assembled with the controller to form the battery management system, each module can be pertinently matched according to different vehicle types, the universality of the battery control circuit is strong, and the follow-up maintenance cost is low.
According to another aspect of the present invention, an electric vehicle is provided. The electric automobile comprises an automobile body and a battery management system, wherein the battery management system is assembled on the automobile body.
In the electric automobile, the battery control circuit which is designed, produced and assembled by adopting the technical scheme is assembled with the controller to form the battery management system, each module can be pertinently matched according to different automobile types, the universality of the battery control circuit is strong, and the follow-up overhaul and maintenance cost is low.
The utility model discloses following beneficial effect has at least:
the utility model provides a battery control circuit designs, production, assembly basic module, the heating module that charges and apolegamy module with the modularization mode, can arrange to different motorcycle types and select each module, accomplishes corresponding battery management work through the work function of different modules for this battery control circuit has the commonality characteristics to different motorcycle types. And, when need maintaining to this battery control circuit break down, only need find out corresponding module that breaks down, then directly change this module, can accomplish maintenance work fast, no longer need like prior art need carry out the dismouting with whole battery control circuit and detect and change whole battery control circuit, use the utility model discloses a battery control circuit then greatly reduced the maintenance cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is an exploded schematic diagram of a battery control circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit layout diagram of a battery control circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit layout diagram of a battery management system according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
10. a base module; 11. a battery positive electrode connecting end; 12. a battery negative electrode connecting end; 13. a positive access terminal; 14. a negative access terminal; 20. a charging heating module; 201. inputting a positive terminal; 202. inputting a negative electrode end; 21. a quick charge loop; 22. a slow charging loop; 23. a heating circuit; 30. a matching module; 31. an IVT module; 311. a positive electrode connection terminal; 312. a negative electrode connection terminal; 32. an IMD module; 40. a shunt resistor; 50. pre-charging a resistor; 70. a controller; 100. a power source.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of 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", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more 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; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1 and 2, a battery control circuit (BDU) provided by an embodiment of the present invention includes a base module 10, a charging heating module 20, a switching circuit module (not shown), and at least one optional module 30. The basic module 10 is provided with two battery connection ends, the two battery connection ends are a battery anode connection end 11 and a battery cathode connection end 12 respectively, the battery anode connection end 11 is used for being electrically connected with an anode of the power supply 100, the battery cathode connection end 12 is used for being electrically connected with a cathode of the power supply 100, and the basic module 10 is used for providing current output, so that power is normally supplied to an automobile power motor to drive an automobile to run and normally work for supplying power to vehicle-mounted electric equipment. The charging and heating module 20 is provided with input ports, specifically an input positive terminal 201 and an input negative terminal 202, the base module 10 is provided with a power transmission port, the power transmission port is composed of a power transmission positive terminal and a power transmission negative terminal, the input positive terminal 201 is electrically connected with the power transmission positive terminal, and the input negative terminal 202 is electrically connected with the power transmission negative terminal. The charging and heating module 20 is detachably connected to the base module 10, the charging and heating module 20 is independently designed in a modularized manner, so that the charging and heating module 20 can be replaced conveniently, and the charging and heating function of the power supply 100 is realized by using the charging and heating module 20 (the charging function is that the power supply 100 is charged through the charging and heating module 20. the heating function is for the power supply 100 in a cold region, when the weather is cold, the temperature of the power supply 100 is low, and at the moment, the power supply 100 cannot be charged, so that the power supply 100 is heated first by the heating function of the charging and heating module 20, and after the temperature of the power supply 100 rises to a preset threshold value capable of being charged, the charging and heating module 20 is charged again). In the battery control circuit of the embodiment, the switch circuit module is used for controlling the on/off of the battery control circuit. The base module 10 is further provided with an access terminal (not shown) adapted to the corresponding matching module 30, and the matching module 30 is detachably connected to the base module 10, so that each corresponding matching module 30 is also independently designed in a modular manner, and when different vehicle models are targeted, the corresponding matching module 30 can be matched according to the battery management function required by the vehicle model. Therefore, the matching module 30 is used for collecting and processing one or more of temperature information, current information and voltage information of the power supply.
Thus, the utility model provides a battery control circuit designs with the modularization mode, production, assembly basic module 10, charge heating module 20 and apolegamy module 30, can arrange to different motorcycle types and select each module (actually, both collocation of basic module 10 and the heating module 20 that charges, can satisfy the power supply of simplest new forms of energy electric automobile, the requirement of charging, also cheapest, the highest collocation mode of potential safety hazard coefficient, therefore generally can not adopt during practical application, however, basic module 10 and the heating module 20 that charges then are the necessary component part in every battery management system), corresponding battery management work is accomplished to the work function through different modules, make this battery control circuit have the commonality characteristics to different motorcycle types. And, when need maintaining to this battery control circuit break down, only need find out corresponding module that breaks down, then directly change this module, can accomplish maintenance work fast, no longer need like prior art need carry out the dismouting with whole battery control circuit and detect and change whole battery control circuit, use the utility model discloses a battery control circuit then greatly reduced the maintenance cost.
In the optional module 30, it includes an IVT module 31 (also known as a current collection self-processing module); further, optional module 30 also includes an IMD module 32 (also referred to as an insulation detection self-processing module). The IVT module 31 is provided with a positive connecting terminal 311 and a negative connecting terminal 312, the access terminals of the base module 10, which are adaptively connected with the positive connecting terminal 311 and the negative connecting terminal 312, are a positive access terminal 13 and a negative access terminal 14, respectively, and the IVT module 31 is used for acquiring and processing voltage information and current information of a power supply. The IVT module 31 is provided with an MCU (processing chip) written with a programming control program in advance, and collects the voltage and current of the power supply 100 to determine whether the voltage of the power supply 100 is normal during charging, discharging, standing still, and the voltage is one of the criteria for determining whether the power supply 100 is working normally or fails. In the IMD module 32, the IMD module 32 is provided with a signal connection port (not shown), the access terminal of the base module 10 adapted to the signal connection port is a signal access port (not shown), and the IMD module 32 is used for power insulation detection.
As shown in fig. 2, in the present embodiment, a shunt resistor 40 is connected in series to the battery negative connection terminal 12, and the shunt resistor 40 leads out a current collection terminal and a temperature collection terminal, wherein the current collection terminal is a current collection positive electrode access terminal (not shown) and a current collection negative electrode access terminal (not shown), and the temperature collection terminal is a temperature collection positive electrode access terminal (not shown) and a temperature collection negative electrode access terminal (not shown). The current collection positive electrode access terminal and the temperature collection positive electrode access terminal are electrically connected with the positive electrode connecting terminal, and the current collection negative electrode access terminal and the temperature collection negative electrode access terminal are electrically connected with the negative electrode connecting terminal. Through the normal operation of the shunt resistor 40 and the IVT module 31, the current data and the current temperature during the discharging and charging processes of the power supply 100 are detected, and the detected data and the current temperature are used as one of the judgment bases for judging the normal operation or the fault of the power supply 100.
Specifically, the charging heating module 20 includes a fast charging loop 21, a slow charging loop 22, and a heating loop 23 (where fast charging and slow charging are relative concepts, i.e., fast charging loop 21 charges power supply 100 faster than slow charging loop 22, and similarly slow charging loop 22 charges power supply 100 slower than fast charging loop 21). The positive poles of the three loops are connected to the positive pole terminal of the power transmission, the negative poles of the three loops are connected to the negative pole terminal of the power transmission, the positive poles of the three loops are electrically connected to the positive pole connecting end 11 of the battery, and the negative poles of the three loops are electrically connected to the negative pole connecting end 12 of the battery, so that the corresponding voltages of the power supply 100 of the three loops during working are collected. The owner of the vehicle can use the fast charging mode or the slow charging mode for different charging posts (the fast charging mode is the charging operation of the power supply 100 through the fast charging loop 21, and the slow charging mode is the charging operation of the power supply 100 through the slow charging loop 22), for example: when the high-voltage charging pile at the gas station charges the power supply 100, a quick charging mode can be adopted; the slow charging mode may be used when the power supply 100 is charged by mains (220V).
In the battery control circuit of the present embodiment, the switch circuit module includes a plurality of relay switches, the battery positive electrode connection end 11, the fast charging circuit 21, the slow charging circuit 22, and the heating circuit 23 are all connected in series with a fuse and a relay switch, and each circuit is protected by the fuse and the relay switch. With reference to fig. 3, when the circuit control circuit is assembled to the battery management system, each relay switch is electrically connected to the controller 70 of the battery management system, so that all relay switches are controlled by the battery management system. In a specific working process, relay switches on different loops cannot be turned on simultaneously, for example: the controller 70 controls the relay switch on the positive terminal and the relay switch on the negative terminal of the slow charging circuit 22 to be turned on simultaneously, and the two relay switches on the positive terminal and the negative terminal of the fast charging circuit 21 and the two relay switches on the positive terminal and the negative terminal of the heating circuit 23 are controlled by the controller 70 to be turned off, and so on, that is, the controller 70 performs management constraint according to a preset control degree. In addition, when the loop current is too large, but the fuse cannot be normally fused to protect the circuit during the respective operations of the loops, at this time, the controller 70 determines which position in the loop has a power failure according to the current and voltage information detected by the IVT module, and the controller 70 also sends an instruction to close the two relay switches on the loop to disconnect the loop, thereby actively protecting the loop safety.
Furthermore, the IVT module 31 and the IMD module 32 both use low voltage power supply, and each relay switch is controlled by a weak current to control a strong current, so that the application is mature in the prior art, and is not described herein.
As shown in fig. 2, a pre-charge line is provided in parallel with a relay switch connected in series to a line connected to the positive power transmission terminal, and a pre-charge resistor 50 and the relay switch are connected in series to the pre-charge line.
In the embodiment, in order to reduce the contact resistance at the connection position of each terminal and reduce the resistance heating value caused by the larger contact resistance, the connection between the connection ends in the battery control circuit is locked and assembled in a screw locking manner, so that the metal terminal and the metal terminal are pressed by a screw to be tightly contacted, and the contact resistance is smaller.
According to another aspect of the utility model, a battery management system is provided. As shown in fig. 3, in the battery management system, the battery management system includes a controller 70, the aforementioned battery control circuit (BDU), and a power supply 100. The controller 70 controls the base module 10 to output current, the controller 70 controls the charging and heating module 20 to charge and heat the power supply 100, and the power supply 100 supplies power to the matching module 30 (for example, the controller 70 controls the corresponding relay switch by using weak current, so that the on-off of a loop formed between the power transmission positive terminal and the power transmission negative terminal can be controlled according to work requirements, and discharging is realized). And, the controller 70 is connected with the matching module 30 in a communication manner, that is, after the IVT module 31 and the IMD module 32 take care of the detected data in their own MCU, the necessary detected data are transmitted to the controller 70 for comprehensive analysis and processing, and then the analysis result is displayed on a vehicle-mounted screen or is notified to the vehicle owner through a corresponding vehicle-mounted indicating component.
According to another aspect of the present invention, an electric vehicle is provided. Particularly, the electric automobile is assembled by adopting the battery management system, and the battery management system is installed in the automobile body, so that the discharging and charging processes of the power supply are effectively managed and controlled by the battery management system, and the purpose of prolonging the service life of the power supply is further achieved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A battery control circuit, comprising:
the base module is provided with two battery connecting ends and is electrically connected with a power supply through the two battery connecting ends;
the charging and heating module is provided with an input port, the foundation module is provided with a power transmission port, the charging and heating module is connected with the power transmission port of the foundation module through the input port, the charging and heating module is detachably connected to the foundation module, and the charging and heating module is used for charging and heating a power supply;
the switch circuit module is used for controlling the on-off of the battery control circuit;
the base module is also provided with an access terminal which is in adaptive connection with the matching module, the matching module is detachably connected to the base module, and the matching module is used for collecting and processing one or more of temperature information, current information and voltage information of a power supply.
2. The battery control circuit of claim 1,
the selective matching module comprises an IVT module, the IVT module is provided with a positive connecting terminal and a negative connecting terminal, the basic module is connected with the positive connecting terminal in a matched mode through the negative connecting terminal, the access terminals are respectively a positive access terminal and a negative access terminal, and the IVT module is used for collecting and processing voltage information and current information of a power supply.
3. The battery control circuit of claim 2,
the battery negative pole connecting end in two battery connection ends is gone up the series connection and is had shunt resistor, shunt resistor draws forth current acquisition terminal and temperature acquisition terminal, current acquisition terminal and temperature acquisition terminal respectively with the battery connection end electricity is connected.
4. The battery control circuit of claim 2,
the charging heating module comprises a quick charging loop, a slow charging loop and a heating loop, and two ends of the quick charging loop, the slow charging loop and the heating loop are respectively connected to a power transmission positive terminal and a power transmission negative terminal of the power transmission port.
5. The battery control circuit of claim 4,
and the battery anode connecting end of the battery connecting end, the quick charging loop, the slow charging loop and the heating loop are all connected with a fuse in series.
6. The battery control circuit of claim 4,
the switch circuit module comprises a plurality of relay switches, and the quick charge circuit, the slow charge circuit and the heating circuit are all connected in series with the relay switches.
7. The battery control circuit according to any one of claims 2 to 6,
the selective matching module comprises an IMD module, the IMD module is provided with a signal connecting port, the basic module is connected with the signal connecting port in an adaptive mode, the access terminal is a signal access port, and the IMD module is used for carrying out insulation detection on the power supply.
8. The battery control circuit of claim 7,
and each connecting end in the battery control circuit is locked and assembled in a screw locking mode.
9. A battery management system is characterized by comprising a power supply, a controller and a battery control circuit,
the battery control circuit is the battery control circuit of any one of claims 1 to 8;
the controller controls the basic module to output current, the controller controls the charging and heating module to charge and heat the power supply, and the power supply supplies power to the matching module;
the controller controls the battery control circuit through the switch circuit module.
10. An electric vehicle comprising a vehicle body and the battery management system of claim 9, the battery management system being mounted on the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021664446.1U CN213354229U (en) | 2020-08-11 | 2020-08-11 | Battery control circuit, battery management system and electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021664446.1U CN213354229U (en) | 2020-08-11 | 2020-08-11 | Battery control circuit, battery management system and electric automobile |
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| CN213354229U true CN213354229U (en) | 2021-06-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115158042A (en) * | 2022-02-23 | 2022-10-11 | 中国第一汽车股份有限公司 | Battery cutting unit modularization method and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115158042A (en) * | 2022-02-23 | 2022-10-11 | 中国第一汽车股份有限公司 | Battery cutting unit modularization method and vehicle |
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