CN211376785U - Battery package interface arrangement - Google Patents
Battery package interface arrangement Download PDFInfo
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- CN211376785U CN211376785U CN201922419288.7U CN201922419288U CN211376785U CN 211376785 U CN211376785 U CN 211376785U CN 201922419288 U CN201922419288 U CN 201922419288U CN 211376785 U CN211376785 U CN 211376785U
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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 utility model discloses a battery package interface arrangement. The device comprises a 2-core connector and a 3-core connector which are arranged on a battery shell, and a main positive relay, a secondary positive relay, a main negative relay and a secondary negative relay which are controlled by a battery management system BMS. The utility model discloses a break-make of 4 relays of BMS control realizes the exclusive use of battery package, series connection use and parallelly connected use very easily, has solved prior art and can not directly carry out the problem of series-parallel connection because of battery package interface circuit is not standard.
Description
Technical Field
The utility model belongs to the technical field of the electric automobile battery, concretely relates to battery package interface arrangement convenient to battery package series-parallel connection.
Background
At present, in an electric automobile, the electrical principle inside a power storage battery pack is different according to the automobile type. High-voltage Power Distribution Units (PDU) of a common electric automobile are arranged in a battery pack, and high-voltage fuses are connected between electric equipment connectors in a main high-voltage loop; the pre-charging resistor is connected with the power battery, the current sensor is installed on the anode of the power battery, and the current sensor is connected with the control module.
Some application scenarios need to use the battery packs on the electric automobile in series or in parallel. For example, a battery pack decommissioned from an electric vehicle is used for a stepped energy storage system after being subjected to series boosting. However, because the electrical interface circuits of the battery pack are incompatible, the battery pack cannot be directly connected in series or in parallel, and the battery pack must be specially made, which is troublesome and high in cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a battery package interface arrangement can carry out the series-parallel connection with the battery very conveniently.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a battery pack interface device comprises a 2-core connector and a 3-core connector which are arranged on a battery pack shell, and a main positive relay, a secondary positive relay, a main negative relay and a secondary negative relay which are controlled by a battery management system BMS (Battery management System). The first and second cores of the 2-core connector are connected to the second and first cores of the 3-core connector, respectively. One end of the main positive relay is connected with the positive electrode of the battery, and the other end of the main positive relay is connected with the first core of the 2-core connector; one end of the main negative relay is connected with the negative electrode of the battery, and the other end of the main negative relay is connected with the second core of the 2-core connector; one end of the secondary positive relay is connected with the positive electrode of the battery, and the other end of the secondary positive relay is connected with the third core of the 3-core connector; one end of the secondary negative relay is connected with the negative electrode of the battery, and the other end of the secondary negative relay is connected with the third core of the 3-core connector.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a 2 core connectors, 3 core connectors on the battery package box and the main positive relay, inferior positive relay, main negative relay, inferior negative relay controlled by battery management system BMS set up and install, as long as the break-make of correct control 4 relays, just realize battery package's exclusive use, series connection use and parallelly connected use very easily, solved prior art because of battery package interface circuit is not standard can directly carry out the problem of series-parallel connection.
Drawings
Fig. 1 is a schematic structural diagram of a battery pack interface device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a single battery pack when used alone;
FIG. 3 is a schematic diagram of two battery packs in series;
fig. 4 is a schematic diagram of two battery packs in parallel.
In the figure: 1-battery, 2-main positive relay, 3-secondary positive relay, 4-main negative relay, 5-secondary negative relay, 6-2 core connector, 7-3 core connector, 8-battery pack case, 9-BMS, 10-case plug.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the utility model provides a battery package interface arrangement, as shown in figure 1, the device is including installing 2 core connectors 6, 3 core connectors 7 on battery package casing 8 and the main positive relay 2, the time positive relay 3, the main negative relay 4, the time negative relay 5 of being controlled by battery management system BMS 9. The first and second cores of the 2-core connector 6 are connected to the second and first cores of the 3-core connector 7, respectively. One end (an electric contact point) of the main positive relay 2 is connected with the positive electrode of the battery 1, and the other end is connected with a first core of the 2-core connector 6; one end of the main negative relay 4 is connected with the negative electrode of the battery 1, and the other end is connected with the second core of the 2-core connector 6; one end of the secondary positive relay 3 is connected with the positive electrode of the battery 1, and the other end of the secondary positive relay is connected with the third core of the 3-core connector 7; one end of the secondary negative relay 5 is connected with the negative electrode of the battery 1, and the other end is connected with the third core of the 3-core connector 7.
In the present embodiment, the device is mainly composed of a 2-core connector 6, a 3-core connector 7 mounted on a battery pack case 8, and a main positive relay 2, a sub positive relay 3, a main negative relay 4, and a sub negative relay 5 controlled by a battery management system BMS 9. The connection relationship of the components is shown in fig. 1. The first and second cores of the 2-core connector 6 are connected to the second and first cores of the 3-core connector 7, respectively. The serial numbers of the cores of the two connectors can be defined by themselves, and as shown in fig. 1, the 2-core connector 6 can be defined as a first core and a second core from top to bottom; the 3-core connector 7 is respectively a first core, a second core and a third core from top to bottom. The main positive relay 2 and the sub positive relay 3 are two relays having one ends connected to the positive electrode of the battery 1, and the other ends thereof are connected to the first core of the 2-core connector 6 and the third core of the 3-core connector 7, respectively. The main negative relay 4 and the sub negative relay 5 are two relays having one ends connected to the negative electrode of the battery 1, and the other ends thereof are connected to the second core of the 2-core connector 6 and the third core of the 3-core connector 7, respectively. The 2-core connector 6 serves as an output electrode of the battery pack, and the 3-core connector 7 serves as a connection electrode when the battery packs are connected in series and parallel. The on-off of the 4 relays is controlled by the BMS. According to the connection relation of the positive and negative electrodes of the batteries when the batteries are connected in series and in parallel, the independent use of the battery pack can be realized, and the series use and the parallel use of the battery pack can be easily realized as long as the on-off of the 4 relays are correctly controlled.
As an alternative embodiment, when the battery pack is used alone, the main positive relay 2 and the main negative relay 4 are closed, and the sub positive relay 3 and the sub negative relay 5 are opened.
This embodiment shows a technical solution for using a single battery pack alone. The solution of the battery pack used alone is relatively simple, as no connection to other battery packs is involved. The wiring diagram when used alone is shown in fig. 2, two relay main positive relays 2 and two relay main negative relays 4 on one side of a 2-core connector 6 are closed, and the positive pole and the negative pole of a battery 1 are respectively led to a first core and a second core of the 2-core connector 6 to be used as the positive pole and the negative pole of the output of the battery pack. Of course, the secondary positive relay 3 and the secondary negative relay 5 on the side of the 3-core connector 7 are also turned off in order to ensure the safety (no short circuit) of the battery.
As an optional embodiment, when two battery packs are connected in series for use, the main positive relay 2 and the secondary negative relay 5 of one battery pack are closed, the secondary positive relay 3 and the main negative relay 4 are opened, the secondary positive relay 3 and the main negative relay 4 of the other battery pack are closed, the main positive relay 2 and the secondary negative relay 5 are opened, and the 3-core connectors 7 of the two battery packs are butted together.
This embodiment shows a technical solution for using two battery packs in series. The connection method of two batteries connected in series is that the negative pole of the first battery is connected with the positive pole of the second battery, the positive pole of the first battery is led out to be used as the positive pole after series connection, and the negative pole of the second battery is led out to be used as the negative pole after series connection. The wiring diagram for two batteries connected in series is shown in fig. 3: the 3-core connectors 7 of the two battery packs are butted together, and the 2-core connectors 6 of the two battery packs are correspondingly communicated; a secondary negative relay 5 of the first battery pack (on the left) and a secondary positive relay 3 of the second battery pack (on the right) are closed, and the negative electrode of the battery 1 in the first battery pack is connected with the positive electrode of the battery 1 in the second battery pack; the main positive relay 2 of the first battery pack is closed, and the positive pole of the battery after series connection is led to the first core of the 2-core connector 6 of the first battery pack to be used as the output positive pole of the two battery packs after series connection; the main negative relay 4 of the second battery pack is closed, and the negative pole of the battery after being connected in series is led to the second core of the 2-core connector of the second battery pack to be used as the output negative pole of the two battery packs after being connected in series; to ensure battery safety, the other 4 relays are opened.
As an alternative embodiment, when two battery packs are used in parallel, the main positive relay 2 and the main negative relay 4 of the two battery packs are closed, the secondary positive relay 3 and the secondary negative relay 5 are opened, and the 3-core connectors 7 of the two battery packs are butted together.
This embodiment shows a technical solution for using two battery packs in parallel. The wiring method for connecting the two batteries in parallel is that the positive electrodes and the negative electrodes of the two batteries are respectively connected, the positive electrodes are led out to be used as the positive electrodes after the two batteries are connected in parallel, and the negative electrodes are led out to be used as the negative electrodes after the two batteries are connected in parallel. A wiring diagram for parallel use of two battery packs is shown in fig. 4, and two battery packs are wired when both are used alone as a single battery pack, as shown in fig. 2; then, the two battery packs are butted together through the 3-core connector 7 to be connected in parallel.
As an alternative embodiment, the battery pack housing 8 is provided with a housing insert 10, which is used to hold two battery packs when the housing inserts 10 of the battery packs are butted together when the two battery packs are connected in series or in parallel.
In the embodiment, in order to fix the positions of the two battery packs in series or parallel connection relatively, a housing insert 10 is arranged on the housing of the battery pack, and when the two battery packs are in series or parallel connection, the housing inserts 10 of the two battery packs are butted together. This arrangement prevents the two 3-core connectors 7 butted together from being loosened and contacting poorly due to frequent changes in the distance between the two battery packs. It is clear that the housing insert 10 is a mechanical connection, typically of an insulating material.
The above description is only for the description of several embodiments of the present invention, but the scope of the present invention should not be considered as the protection scope of the present invention, in which all the equivalent changes or modifications or the equal-scale enlargement or reduction etc. made according to the design spirit of the present invention should be considered as falling into the protection scope of the present invention.
Claims (5)
1. A battery pack interface device is characterized by comprising a 2-core connector and a 3-core connector which are arranged on a battery pack shell, and a main positive relay, a secondary positive relay, a main negative relay and a secondary negative relay which are controlled by a battery management system BMS; the first core and the second core of the 2-core connector are respectively connected with the second core and the first core of the 3-core connector; one end of the main positive relay is connected with the positive electrode of the battery, and the other end of the main positive relay is connected with the first core of the 2-core connector; one end of the main negative relay is connected with the negative electrode of the battery, and the other end of the main negative relay is connected with the second core of the 2-core connector; one end of the secondary positive relay is connected with the positive electrode of the battery, and the other end of the secondary positive relay is connected with the third core of the 3-core connector; one end of the secondary negative relay is connected with the negative electrode of the battery, and the other end of the secondary negative relay is connected with the third core of the 3-core connector.
2. The battery pack interface device of claim 1, wherein the primary positive relay and the primary negative relay are closed and the secondary positive relay and the secondary negative relay are open when the battery pack is used alone.
3. The battery pack interface device of claim 1, wherein when two battery packs are used in series, the primary positive relay and the secondary negative relay of one battery pack are closed, the secondary positive relay and the primary negative relay are open, the secondary positive relay and the primary negative relay of the other battery pack are closed, the primary positive relay and the secondary negative relay are open, and the 3-pin connectors of the two battery packs are butted together.
4. The battery pack interface device of claim 1, wherein when two battery packs are used in parallel, the primary positive and negative relays of the two battery packs are closed, the secondary positive and negative relays are open, and the 3-pin connectors of the two battery packs are butted together.
5. The battery pack interface device of claim 1, wherein the battery pack housing has a housing insert for securing the two battery packs when the two battery packs are connected in series or in parallel when the housing inserts of the respective battery packs are mated together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922419288.7U CN211376785U (en) | 2019-12-30 | 2019-12-30 | Battery package interface arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922419288.7U CN211376785U (en) | 2019-12-30 | 2019-12-30 | Battery package interface arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211376785U true CN211376785U (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922419288.7U Active CN211376785U (en) | 2019-12-30 | 2019-12-30 | Battery package interface arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211376785U (en) |
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2019
- 2019-12-30 CN CN201922419288.7U patent/CN211376785U/en active Active
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