CN215850766U - Battery package high voltage circuit - Google Patents
Battery package high voltage circuit Download PDFInfo
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- CN215850766U CN215850766U CN202121856016.4U CN202121856016U CN215850766U CN 215850766 U CN215850766 U CN 215850766U CN 202121856016 U CN202121856016 U CN 202121856016U CN 215850766 U CN215850766 U CN 215850766U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application provides a battery pack high-voltage circuit, which comprises a battery pack inner high-voltage circuit, a battery pack outer high-voltage circuit and an aviation plug; the high-voltage circuit in the battery pack is connected with the high-voltage circuit outside the battery pack through an aviation plug; the high-voltage circuit in the battery pack comprises a battery pack, a fuse, a battery positive relay and a battery negative relay; one end of the fuse is connected with the positive electrode of the battery pack, the other end of the fuse is connected with one end of the battery positive relay, and the other end of the battery positive relay is used as a first positive electrode end of a high-voltage circuit in the battery pack; one end of the battery negative relay is connected with the negative electrode of the battery pack, and the other end of the battery negative relay is used as a first negative electrode end of a high-voltage circuit in the battery pack. Adopt the battery package high voltage circuit that this application provided, be convenient for produce the assembly and maintain and change the device, help improving the security and the reliability of circuit, protect personal and property safety better.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery pack high-voltage circuit.
Background
With the increasing environmental and energy crisis, electric vehicles have been rapidly developed to save energy and reduce carbon emissions. The electric automobile adopts battery package high-voltage circuit to provide power, and the high voltage in the battery package has brought great potential safety hazard for relevant personnel, needs to carry out safety protection. In addition, in the existing battery pack high-voltage circuit, the fixed connection between the battery pack internal high-voltage circuit and the battery pack external high-voltage circuit brings inconvenience to the production, assembly, maintenance and replacement of the circuit.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present application is to provide a battery pack high-voltage circuit, which can be disconnected by using relays and aviation plugs during production, testing, transportation, and maintenance, so as to facilitate production, assembly, maintenance, and replacement of devices, improve the safety and reliability of the battery pack high-voltage circuit, and better protect personal and property safety.
The embodiment of the application provides a battery pack high-voltage circuit, which comprises a battery pack inner high-voltage circuit, a battery pack outer high-voltage circuit and an aviation plug;
the first positive end of the high-voltage circuit in the battery pack is connected with the second positive end of the high-voltage circuit outside the battery pack through the aviation plug, and the first negative end of the high-voltage circuit in the battery pack is connected with the second negative end of the high-voltage circuit outside the battery pack through the aviation plug;
the high-voltage circuit in the battery pack comprises a battery pack, a fuse, a battery positive relay and a battery negative relay;
one end of the fuse is connected with the positive electrode of the battery pack, the other end of the fuse is connected with one end of the battery positive relay, and the other end of the battery positive relay is used as a first positive electrode end of a high-voltage circuit in the battery pack;
one end of the battery negative relay is connected with the negative electrode of the battery pack, and the other end of the battery negative relay is used as a first negative electrode end of a high-voltage circuit in the battery pack.
Furthermore, the high-voltage circuit outside the battery pack comprises a pre-charging relay, a pre-charging resistor, a main positive relay and a charging relay;
one end of the main positive relay is used as a second positive terminal of the high-voltage circuit outside the battery pack, and the other end of the main positive relay is used as a motor positive output end of the high-voltage circuit outside the battery pack; one end of the pre-charging relay is connected with one end of the main positive relay, and the other end of the pre-charging relay is connected with one end of the pre-charging resistor; the other end of the pre-charging resistor is connected with the other end of the main positive relay; one end of the charging relay is connected with one end of the main positive relay, and the other end of the charging relay is used as a charging positive electrode input end of the high-voltage circuit outside the battery pack;
the second negative end of the high-voltage circuit outside the battery pack is connected with the motor negative input end of the high-voltage circuit outside the battery pack; and the second negative electrode end of the high-voltage circuit outside the battery pack is connected with the charging negative electrode output end of the high-voltage circuit outside the battery pack.
Further, the battery pack includes at least one battery.
Furthermore, the positive pole output end of a motor of the high-voltage circuit outside the battery pack is connected with the positive pole of the load equipment, and the negative pole input end of the motor of the high-voltage circuit outside the battery pack is connected with the negative pole of the load equipment, so that the load equipment is powered through the high-voltage circuit of the battery pack.
Furthermore, the charging positive input end of the high-voltage circuit outside the battery pack is connected with the positive electrode of the charging power supply, and the charging negative output end of the high-voltage circuit outside the battery pack is connected with the negative electrode of the charging power supply, so that the battery pack is charged through the charging power supply.
Further, the battery positive relay, the battery negative relay, the pre-charging relay, the main positive relay and the charging relay are at least one or more of an electromagnetic relay, a temperature relay and a solid-state relay.
Furthermore, one end and the other end of the battery positive relay, the battery negative relay, the pre-charging relay, the main positive relay and the charging relay are normally open contacts.
According to the battery pack high-voltage circuit provided by the embodiment of the application, the battery pack high-voltage circuit comprises a battery pack inner high-voltage circuit, a battery pack outer high-voltage circuit and an aviation plug; the first positive end of the high-voltage circuit in the battery pack is connected with the second positive end of the high-voltage circuit outside the battery pack through the aviation plug, and the first negative end of the high-voltage circuit in the battery pack is connected with the second negative end of the high-voltage circuit outside the battery pack through the aviation plug; the high-voltage circuit in the battery pack comprises a battery pack, a fuse, a battery positive relay and a battery negative relay; one end of the fuse is connected with the positive electrode of the battery pack, the other end of the fuse is connected with one end of the battery positive relay, and the other end of the battery positive relay is used as a first positive electrode end of a high-voltage circuit in the battery pack; one end of the battery negative relay is connected with the negative electrode of the battery pack, and the other end of the battery negative relay is used as a first negative electrode end of a high-voltage circuit in the battery pack.
Compared with the battery pack high-voltage circuit in the prior art, the aviation plug connected between the battery pack internal high-voltage circuit and the battery pack external high-voltage circuit and the relay in the battery pack internal high-voltage circuit are used for disconnecting the circuit in the processes of production, test, transportation, maintenance and the like, so that the production, assembly, maintenance and replacement of devices are facilitated, the safety and reliability of the battery pack high-voltage circuit are improved, and the personal and property safety is better protected.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 shows one of the schematic structural diagrams of a high-voltage circuit of a battery pack provided in an embodiment of the present application;
fig. 2 shows one of the structural schematic diagrams of a high-voltage circuit outside a battery pack provided in an embodiment of the present application;
fig. 3 shows a second schematic structural diagram of a high-voltage circuit of a battery pack according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. Every other embodiment that can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present application falls within the protection scope of the present application.
First, an application scenario to which the present application is applicable will be described. The power battery circuit can be applied to the electric automobile.
Research shows that the electric automobile adopts a battery pack high-voltage circuit to provide power, and the high voltage in the battery pack brings great potential safety hazards to related personnel and needs safety protection. In addition, the fixed connection of the existing battery pack high-voltage circuit brings inconvenience to the production assembly, maintenance and replacement of the circuit.
Based on this, this application embodiment provides a battery package high voltage circuit, is convenient for produce the assembly and maintain the change device, helps improving battery package high voltage circuit's security and reliability, protects personal and property safety better.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery pack high-voltage circuit according to an embodiment of the present disclosure. As shown in fig. 1, the battery pack high-voltage circuit 100 provided by the embodiment of the present application includes a battery pack internal high-voltage circuit 110, a battery pack external high-voltage circuit 120, and an aviation plug 130;
the first positive terminal of the high-voltage circuit 110 in the battery pack is connected with the second positive terminal of the high-voltage circuit 120 outside the battery pack through the aviation plug 130, and the first negative terminal of the high-voltage circuit 110 in the battery pack is connected with the second negative terminal of the high-voltage circuit 120 outside the battery pack through the aviation plug 130;
the in-pack high-voltage circuit 110 includes: a battery pack 111, a fuse 112, a battery positive relay 113, and a battery negative relay 114;
one end of the fuse 112 is connected with the positive electrode of the battery pack 111, the other end of the fuse 112 is connected with one end of the battery positive relay 113, and the other end of the battery positive relay 113 is used as a first positive electrode end of the high-voltage circuit 110 in the battery pack;
one end of the battery negative relay 114 is connected to the negative electrode of the battery pack 111, and the other end of the battery negative relay 114 serves as a first negative electrode end of the high-voltage circuit 110 in the battery pack.
In particular implementations, the battery pack 111 includes at least one battery.
Here, the circuit can be cut off by the battery positive relay 113 and the battery negative relay 114 to isolate the battery pack, which plays a certain protection role. In some cases, however, the relay contacts may stick together or the relay control circuit may fail, which may render the relay ineffective in breaking the high voltage circuit. Accordingly, an aviation plug 130 is added between the inside-pack high-voltage circuit 110 and the outside-pack high-voltage circuit 120. Wherein the aviation plug 130 functions to connect or disconnect an electrical circuit. The aviation plug 130 can reliably disconnect the circuit and separate the high-voltage circuit 110 inside the battery pack and the high-voltage circuit 120 outside the battery pack when needed in the processes of production, test, transportation, maintenance and the like, so that the operation of related personnel can be conveniently and safely carried out.
Furthermore, the aviation plug 130 helps to simplify the manufacturing and assembling process of the battery pack high-voltage circuit 100, and in particular, the aviation plug separates the circuit connection of the battery pack internal high-voltage circuit 110 and the battery pack external high-voltage circuit 120, so that the manufacturing processes of the battery pack internal high-voltage circuit 110 and the battery pack external high-voltage circuit 120 can be performed synchronously at different manufacturing sites, and finally, the battery pack high-voltage circuit 110 is assembled completely. In addition, if a certain device in the high-voltage circuit is damaged or needs to be upgraded, the aviation plug 130 can be disconnected, and only the high-voltage circuit 110 in the battery pack or the high-voltage circuit 120 outside the battery pack where the device is located is operated, so that the maintenance and the replacement are more convenient.
The structure of the high voltage circuit 120 outside the battery pack provided by the present application will be further described with reference to fig. 2.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a high-voltage circuit 120 outside a battery pack according to an embodiment of the present disclosure. As shown in fig. 2, the high voltage circuit 120 outside the battery pack provided by the embodiment of the present application includes a pre-charge relay 121, a pre-charge resistor 122, a main positive relay 123, and a charge relay 124;
one end of the main positive relay 123 is used as a second positive end of the battery pack external high-voltage circuit 120, and the other end of the main positive relay 123 is used as a motor positive output end of the battery pack external high-voltage circuit 120; one end of the pre-charge relay 121 is connected to one end of the main positive relay 123, and the other end of the pre-charge relay 121 is connected to one end of the pre-charge resistor 122; the other end of the pre-charging resistor 122 is connected with the other end of the main positive relay 123; one end of the charging relay 124 is connected to one end of the main positive relay 123, and the other end of the charging relay 124 serves as a charging positive input end of the high-voltage circuit 120 outside the battery pack;
the second negative end of the high-voltage circuit 120 outside the battery pack is connected with the motor negative input end of the high-voltage circuit 120 outside the battery pack; the second negative terminal of the high voltage circuit 120 outside the battery pack is connected to the charged negative output terminal of the high voltage circuit 120 outside the battery pack.
Therefore, the high-voltage circuit 110 in the battery pack is separated from the high-voltage circuit 120 outside the battery pack, and most circuit devices are arranged in the high-voltage circuit 120 outside the battery pack, so that the possibility that the circuit devices in the high-voltage circuit 110 in the battery pack need to be maintained and replaced is reduced, and the economic loss and the influence on the service life of the battery caused by repeatedly opening the battery pack are avoided.
The structure of the battery pack high-voltage circuit provided by the present application will be further described with reference to fig. 3.
Referring to fig. 3, fig. 3 is a second schematic structural diagram of a battery pack high-voltage circuit 100 according to an embodiment of the present disclosure. As shown in fig. 3, in the embodiment of the present application, the positive electrode output end of the motor of the high-voltage circuit 120 outside the battery pack is connected to the positive electrode of the load device 140, and the negative electrode input end of the motor of the high-voltage circuit 120 outside the battery pack is connected to the negative electrode of the load device 140, so as to supply power to the load device 140 through the high-voltage circuit 100 of the battery pack.
The positive charging input end of the battery pack outer high-voltage circuit 120 is connected with the positive electrode of the charging power supply 150, and the negative charging output end of the battery pack outer high-voltage circuit 120 is connected with the negative electrode of the charging power supply 150, so that the battery pack 111 can be charged through the charging power supply 150.
In a specific implementation, the battery positive relay 113, the battery negative relay 114, the pre-charge relay 121, the main positive relay 123, and the charge relay 124 are at least one or more of an electromagnetic relay, a temperature relay, and a solid-state relay.
In specific implementation, one end and the other end of the battery positive relay 113, the battery negative relay 114, the pre-charge relay 121, the main positive relay 123 and the charge relay 124 are normally open contacts.
Next, the closing timing of the relays in the battery pack high-voltage circuit 100 and the operation principle of the battery pack high-voltage circuit 100 will be specifically described with reference to fig. 3.
When the battery pack 111 in the battery pack high-voltage circuit supplies power to the outside, the motor positive electrode output end of the battery pack external high-voltage circuit 120 is connected with the positive electrode of the load device 140, and the motor negative electrode input end of the battery pack external high-voltage circuit 120 is connected with the negative electrode of the load device 140.
When the load device 140 is powered, the battery positive relay 113 is closed first, the battery negative relay 114 is closed second, and the pre-charge relay 121 is closed again. At this time, the battery pack 111, the fuse 112, the precharge relay 121, the precharge resistor 122, the load device 140, the battery positive relay 113, and the battery negative relay 114 constitute a precharge circuit. This is because the front end of the load device 140 usually has a large capacitor, and when the power is turned on, if the pre-charge relay 121 and the pre-charge resistor 122 are not provided, the main positive relay 123 is directly closed, the battery voltage is high, and the voltage on the capacitor is close to 0, which is equivalent to an instantaneous short circuit, and a very large instantaneous current is generated, which may damage the battery pack high-voltage circuit 100. The pre-charging relay 121 and the pre-charging resistor 122 are added to form a pre-charging loop, the pre-charging relay 121 is used for controlling the on-off of the pre-charging loop, the pre-charging resistor 122 is used for limiting the current in the circuit at the moment of connection, and the circuit is prevented from being damaged.
When the voltage across the capacitor approaches the voltage across the battery pack 111, the main positive relay 123 is closed again, and the pre-charge relay 121 is opened, so as to normally supply power to the load equipment 140.
When the battery pack 111 in the battery pack high-voltage circuit is charged by the charging power supply 150, the charging positive input terminal of the battery pack external high-voltage circuit 120 is connected to the positive terminal of the charging power supply 150, and the charging negative output terminal of the battery pack external high-voltage circuit 120 is connected to the negative terminal of the charging power supply 150.
At this time, the battery positive relay 113 is closed first, the battery negative relay 114 is closed, and the charging relay 124 is closed finally. In this way, the charging safety and personal safety of the battery pack high-voltage circuit 100 can be ensured.
In the several embodiments provided in the present application, it should be understood that the disclosed circuits, devices and methods may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another circuit, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A battery pack high-voltage circuit is characterized by comprising a battery pack inner high-voltage circuit, a battery pack outer high-voltage circuit and an aviation plug;
the first positive end of the high-voltage circuit in the battery pack is connected with the second positive end of the high-voltage circuit outside the battery pack through the aviation plug, and the first negative end of the high-voltage circuit in the battery pack is connected with the second negative end of the high-voltage circuit outside the battery pack through the aviation plug;
the high-voltage circuit in the battery pack comprises a battery pack, a fuse, a battery positive relay and a battery negative relay;
one end of the fuse is connected with the positive electrode of the battery pack, the other end of the fuse is connected with one end of the battery positive relay, and the other end of the battery positive relay is used as a first positive electrode end of a high-voltage circuit in the battery pack;
one end of the battery negative relay is connected with the negative electrode of the battery pack, and the other end of the battery negative relay is used as a first negative electrode end of a high-voltage circuit in the battery pack.
2. The battery pack high-voltage circuit according to claim 1, wherein the battery pack external high-voltage circuit comprises a pre-charge relay, a pre-charge resistor, a main positive relay and a charge relay;
one end of the main positive relay is used as a second positive terminal of the high-voltage circuit outside the battery pack, and the other end of the main positive relay is used as a motor positive output end of the high-voltage circuit outside the battery pack; one end of the pre-charging relay is connected with one end of the main positive relay, and the other end of the pre-charging relay is connected with one end of the pre-charging resistor; the other end of the pre-charging resistor is connected with the other end of the main positive relay; one end of the charging relay is connected with one end of the main positive relay, and the other end of the charging relay is used as a charging positive electrode input end of the high-voltage circuit outside the battery pack;
the second negative end of the high-voltage circuit outside the battery pack is connected with the motor negative input end of the high-voltage circuit outside the battery pack; and the second negative electrode end of the high-voltage circuit outside the battery pack is connected with the charging negative electrode output end of the high-voltage circuit outside the battery pack.
3. The battery pack high voltage circuit of claim 1, wherein the battery pack comprises at least one battery.
4. The battery pack high-voltage circuit according to claim 2, wherein a motor positive output terminal of the battery pack external high-voltage circuit is connected with a positive terminal of a load device, and a motor negative input terminal of the battery pack external high-voltage circuit is connected with a negative terminal of the load device, so as to supply power to the load device through the battery pack high-voltage circuit.
5. The battery pack high-voltage circuit according to claim 2, wherein a charging positive input terminal of the battery pack external high-voltage circuit is connected to a positive terminal of a charging power supply, and a charging negative output terminal of the battery pack external high-voltage circuit is connected to a negative terminal of the charging power supply, so as to charge the battery pack through the charging power supply.
6. The battery pack high voltage circuit of claim 2, wherein the battery positive relay, the battery negative relay, the pre-charge relay, the main positive relay, and the charge relay are at least one or more of an electromagnetic relay, a temperature relay, and a solid state relay.
7. The battery pack high voltage circuit of claim 6, wherein one end and the other end of the battery positive relay, the battery negative relay, the pre-charge relay, the main positive relay and the charge relay are normally open contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121856016.4U CN215850766U (en) | 2021-08-09 | 2021-08-09 | Battery package high voltage circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121856016.4U CN215850766U (en) | 2021-08-09 | 2021-08-09 | Battery package high voltage circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215850766U true CN215850766U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121856016.4U Active CN215850766U (en) | 2021-08-09 | 2021-08-09 | Battery package high voltage circuit |
Country Status (1)
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|---|---|
| CN (1) | CN215850766U (en) |
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2021
- 2021-08-09 CN CN202121856016.4U patent/CN215850766U/en active Active
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