CN108667109B - Power supply cut-off device and battery system - Google Patents
Power supply cut-off device and battery system Download PDFInfo
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- CN108667109B CN108667109B CN201810928975.9A CN201810928975A CN108667109B CN 108667109 B CN108667109 B CN 108667109B CN 201810928975 A CN201810928975 A CN 201810928975A CN 108667109 B CN108667109 B CN 108667109B
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- current row
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- liquid cooling
- heat conducting
- heat
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- 238000001816 cooling Methods 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 64
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the invention provides a power supply cut-off device and a battery system, and relates to the technical field of power batteries. The power supply cutting device comprises a first current row, a second current row, a relay, a heat conducting piece and a liquid cooling pipe connecting piece; the first current row connected with the positive electrode of the power supply and the second current row connected with the negative electrode of the power supply are electrically connected with a relay, and the relay controls the opening and closing of a load loop formed by the first current row and the second current row; the heat conducting piece is respectively contacted with the first current row and the second current row, and the heat conducting piece is connected with an external liquid cooling pipe through the liquid cooling pipe connecting piece, so that heat generated on the first current row and the second current row is transferred to the liquid cooling pipe through the heat conducting piece to dissipate heat, and the heat dissipation performance of the power supply cutting device and the safety of a battery system are improved.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to a power supply cut-off device and a battery system.
Background
The BDU (Battery Disconnect Unit, power cut-off unit) is an important component of the battery system, which can control the on-off of the high voltage circuit through the control signal of the BMS (Battery Management System ) to perform charge and discharge management on the battery.
Through researches, the BDU generates a large amount of heat in the internal current row in the process of high-power charge and discharge, and if the BDU cannot be timely radiated, serious potential safety hazards exist, and even safety accidents are caused.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a power cut-off device and a battery system, so as to improve the heat dissipation performance of a BDU of the power cut-off unit and reduce the potential safety hazard of the battery system.
In order to achieve the above object, the preferred embodiment of the present invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a power supply cutoff device, where the device includes a first current bank, a second current bank, a relay, a heat conducting member, and a liquid cooling pipe connecting member; wherein,,
the first current row connected with the positive electrode of the power supply and the second current row connected with the negative electrode of the power supply are electrically connected with a relay, and the relay controls the opening and closing of a load loop formed by the first current row and the second current row;
the heat conducting piece is respectively contacted with the first current row and the second current row, and the heat conducting piece is connected with an external liquid cooling pipe through the liquid cooling pipe connecting piece, so that heat generated on the first current row and the second current row is transferred to the liquid cooling pipe through the heat conducting piece to dissipate heat.
Optionally, in an embodiment of the present invention, the apparatus further includes a base, and the first current bank, the second current bank, and the relay are fixed on the base;
the base is also provided with a fixed plate, the first current row and the second current row are arranged along the extending direction of the fixed plate, and the heat conducting piece is arranged between the first current row and the fixed plate and between the second current row and the fixed plate.
Optionally, in an embodiment of the present invention, a gap between the heat conducting member and the first current row and the second current row is filled with a heat conducting medium.
Optionally, in an embodiment of the present invention, the liquid cooling pipe connector includes a first connecting pipe and a second connecting pipe;
the first connecting pipe is connected with the liquid cooling pipe, and the second connecting pipe is connected with the heat conducting piece.
Optionally, in an embodiment of the present invention, inner walls of the first connecting tube and the second connecting tube respectively form an accommodating channel;
the liquid cooling Guan Rong is arranged in an accommodating channel formed by the inner wall of the first connecting pipe, and one end of the heat conducting piece is accommodated in an accommodating channel formed by the inner wall of the second connecting pipe;
the shape of the accommodating channel is respectively matched with the shapes of the outer walls of the liquid cooling pipe and the heat conducting piece.
Optionally, in an embodiment of the present invention, a bending portion is disposed at an end of the heat conducting member connected to the second connecting pipe, and the heat conducting member is bent upward relative to the base through the bending portion.
Optionally, in an embodiment of the present invention, the device further includes a fuse, where the fuse is connected in series with the first current row or the second current row, and the fuse cuts off a loop formed by the first current row and the second current row when the load current is greater than a limit value.
Optionally, in an embodiment of the present invention, the heat conducting member is made of a heat pipe or a hot plate, and a material of the liquid cooling pipe connector includes copper.
In a second aspect, an embodiment of the present invention further provides a battery system, where the battery system includes a BMS module, a liquid cooling tube, and a power supply cutoff device; wherein,,
the power supply cutting device comprises a first current row, a second current row, a relay, a heat conducting piece and a liquid cooling pipe connecting piece;
the first current row connected with the positive electrode of the power supply and the second current row connected with the negative electrode of the power supply are electrically connected with the relay;
the BMS module is connected with the relay and controls the opening and closing of a load loop formed by the first current row and the second current row through the relay;
the heat conducting piece is respectively contacted with the first current row and the second current row, and the heat conducting piece is connected with an external liquid cooling pipe through the liquid cooling pipe connecting piece, so that heat generated on the first current row and the second current row is transferred to the liquid cooling pipe through the heat conducting piece to dissipate heat.
Optionally, in an embodiment of the present invention, a current sensor is connected to the first current bank or the second current bank;
the current sensor is electrically connected with the BMS module, and the BMS module controls the relay to be opened or closed according to current data collected by the current sensor.
Compared with the prior art, the invention has the following beneficial effects:
according to the power supply cutting device provided by the embodiment of the invention, the heat conducting piece which is connected with the external liquid cooling pipe and is in contact with the first current row and the second current row is arranged, so that heat generated on the first current row and the second current row can be transferred to the liquid cooling pipe through the heat conducting piece, the heat dissipation efficiency of the first current row and the second current row is improved, the potential safety hazard of the power supply cutting device is reduced, and the safety of a battery system is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a first schematic structural diagram of a power cut-off device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a liquid cooling pipe connector in a power cut-off device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a first structure of a heat conducting member in a power cut-off device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second structure of a heat conducting member in the power cut-off device according to the embodiment of the present invention;
fig. 5 is a second schematic structural diagram of a power cut-off device according to an embodiment of the present invention.
Icon: 10-a first current bank; 11-a second current bank; 20-relay; 30-a heat conducting member; 31-a bending part; 40-liquid cooling pipe connection; 41-a first connection tube; 42-a second connecting tube; 50-liquid cooling tube; a 60-fuse; 70-a base; 71-a fixing plate; 80-a housing.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, the azimuth or positional relationship indicated by the terms "inner wall", "outer wall", "upper", "one end", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth; furthermore, the terminology "first," "second," etc. is for the purpose of distinguishing between different features of the invention and simplifying the description, and is not intended to indicate or imply a relative importance, and therefore should not be taken to be limiting.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present invention provides a power supply cut-off device, which may be applied to a battery system, and may control on-off of a high voltage circuit in the battery system by sending a weak current control signal to the power supply cut-off device through a BMS module in the battery system.
Specifically, in the embodiment of the present invention, the device includes a first current bank 10, a second current bank 11, a relay 20, a heat conducting member 30, and a liquid cooling pipe connection member 40. The first current row 10 and the second current row 11 can be respectively connected with an anode and a cathode of a power supply, a relay 20 is connected in series between the first current row 10 and the second current row 11, the relay 20 is in communication connection with a BMS module, and a control instruction is sent to the relay 20 through the BMS module to realize control of opening and closing of a load loop formed by the first current row 10, the second current row 11 and the power supply.
Further, the heat conducting member 30 is respectively in contact with the first current bank 10 and the second current bank 11, and the heat conducting member 30 is further connected to the external liquid cooling tube 50 through the liquid cooling tube connector 40, so that the heat generated on the first current bank 10 and the second current bank 11 is transferred to the liquid cooling tube 50 through the heat conducting member 30, and then the heat is taken away by the cooling liquid flowing in the liquid cooling tube 50, so as to realize rapid heat dissipation.
Alternatively, in an embodiment of the present invention, the power cut-off device may include one or more relays 20, and the first current bank 10, the second current bank 11, and the power source may constitute one or more load circuits. In each of the load loops, at least one relay 20 may be connected, and each of the relays 20 may be respectively connected to the BMS module in a communication manner, and may be respectively controlled by the BMS module, or may be synchronously controlled by the BMS module.
With continued reference to fig. 1, in an embodiment of the present invention, the apparatus further comprises a base 70, and the first current bank 10, the second current bank 11, and the relay 20 are fixed to the base 70.
In one embodiment of the present invention, a fixing plate 71 is further disposed on the base 70, the first current bank 10 and the second current bank 11 are disposed along the extending direction of the fixing plate 71, and the heat conductive member 30 is disposed between the first current bank 10 and the fixing plate 71 and between the second current bank 11 and the fixing plate 71, such that the heat conductive member 30 is fixed with respect to the first current bank 10 and the second current bank 11 and is in contact with the first current bank 10 and the second current bank 11, respectively, by the fixing action of the first current bank 10, the second current bank 11 and the fixing plate 71.
Alternatively, in the embodiment of the present invention, the heat conductive member 30 may be contacted with the first current bank 10 and the second current bank 11 by other contact methods. For example, the heat conductive member 30 may also be fixed and maintained in contact with the first current bank 10 and the second current bank 11 by sandwiching the first current bank 10 and the second current bank 11, respectively. It should be understood herein that, in the embodiment of the present invention, the heat conducting member 30 may be in contact with the first current bank 10 and the second current bank 11, but is not limited to the above-mentioned contact method.
Further, in the embodiment of the present invention, in order to reduce the thermal resistance between the heat conducting member 30 and the first current row 10 and the second current row 11 due to the existence of the contact gap, the heat conducting efficiency between the heat conducting member 30 and the first current row 10 and the second current row 11 is improved by filling the heat conducting medium in the contact gap. In particular, the heat-conducting medium may be, but is not limited to, a heat-conducting paste.
Referring to fig. 1 and 2, alternatively, in an embodiment of the present invention, the liquid-cooled tube connection 40 may include a first connection tube 41 and a second connection tube 42; the first connection pipe 41 is connected with the liquid cooling pipe 50, and the second connection pipe 42 is connected with the heat conducting member 30, so that the connection between the heat conducting member 30 and the liquid cooling pipe 50 is more convenient and reliable. Meanwhile, the heat generated in the first current bank 10 and the second current bank 11 may be transferred to the liquid cooling pipe 50 via the heat conductive member 30 and the liquid cooling pipe connection member 40.
With continued reference to fig. 2, in an alternative embodiment of the present invention, the inner walls of the first connecting pipe 41 and the second connecting pipe 42 respectively form a receiving channel, and the liquid cooling pipe 50 and the heat conducting member 30 are respectively connected through the receiving channels formed by the first connecting pipe 41 and the second connecting pipe 42.
Specifically, in the embodiment of the present invention, the liquid cooling pipe 50 is accommodated in an accommodating channel formed by the inner wall of the first connecting pipe 41, one end of the heat conducting member 30 is accommodated in an accommodating channel formed by the inner wall of the second connecting pipe 42, and the liquid cooling pipe 50 and the heat conducting member 30 are respectively in contact with the inner walls of the first connecting pipe 41 and the second connecting pipe 42.
Further, in order to make the heat conductive member 30 and the liquid cooling pipe 50 sufficiently contact with the accommodation passages formed by the inner walls of the first connection pipe 41 and the second connection pipe 42, respectively, in the embodiment of the present invention, the shape of the accommodation passages is matched with the shape of the outer walls of the liquid cooling pipe 50 and the heat conductive member 30, respectively. In other words, the shape and size of the first connection pipe 41 and the second connection pipe 42 may be set according to the shape and size of the liquid cooling pipe 50 and the heat conductive member 30, respectively.
Alternatively, in the embodiment of the present invention, the accommodating channels formed by the inner walls of the first connecting pipe 41 and the second connecting pipe 42 may be filled with the above-mentioned heat-conducting medium, so that the liquid cooling pipe 50 and the heat-conducting member 30 are fully contacted with the first connecting pipe 41 and the second connecting pipe 42 of the liquid cooling pipe connecting member 40, respectively, to further improve the heat transfer efficiency.
Referring to fig. 3, in one embodiment of the present invention, the heat conducting member 30 may have a U-shaped structure, and both sides of the heat conducting member 30 are respectively in contact with the first current bank 10 and the second current bank 11. Meanwhile, in this embodiment, in order to avoid the heat conductive member 30 from shorting the first current bank 10 and the second current bank 11, the heat conductive member 30 may be subjected to an insulating process or the heat conductive member 30 may be formed of an insulating material.
Further, in the embodiment of the present invention, a bending portion 31 is disposed at an end of the heat conducting member 30 connected to the second connecting pipe 42, and the heat conducting member 30 is bent upward relative to the base 70 by the bending portion 31, so that the connection between the heat conducting member 30 and the liquid cooling pipe connecting member 40 is more convenient.
Preferably, referring to fig. 4, in another embodiment of the present invention, in order to reduce the material cost of the heat conducting member 30, the heat conducting member 30 is designed as two parts contacting the first current row 10 and the second current row 11, respectively, and one ends of the two parts connected to the liquid cooling tube connecting member 40 are provided with bending parts 31 bending upwards relative to the base 70, so that the heat conducting member 30 is convenient to connect to the liquid cooling tube connecting member 40 while saving materials.
Further, in the embodiment of the present invention, the power supply cutting device further includes a fuse 60, where the fuse 60 is connected in series with the first current bank 10 or the second current bank 11, and when the load current flowing through the fuse 60 is greater than a limit value, the fuse 60 can automatically cut off a loop formed by the first current bank 10 and the second current bank 11, so as to ensure the safety of the circuit.
Specifically, in the embodiment of the present invention, in order to ensure the heat transfer efficiency of the heat conducting member 30 and the liquid cooling tube connecting member 40, the heat conducting member 30 may be manufactured by using a heat pipe or a hot plate with particularly excellent heat transfer performance, and the material of the liquid cooling tube connecting member 40 may include copper or other materials with relatively good heat transfer performance, which is not particularly limited herein.
Further, referring to fig. 5, the power cut-off device may further include a housing 80, the housing 80 is connected to the base 70, and the first current bank 10, the second current bank 11, the relay 20, and the fuse 60 are all accommodated inside the housing 80, so that the internal components of the device are isolated from other external components, and electrical leakage or short circuit caused by contact thereof is prevented. Meanwhile, in the embodiment of the present invention, a reserved port for connecting with an internal device may be further provided on the housing 80, so that the device is more convenient when performing circuit connection.
Further, the embodiment of the invention also provides a battery system, which comprises a BMS module, a liquid cooling pipe 50 and a power cut-off device; the power supply cut-off device comprises a first current row 10, a second current row 11, a relay 20, a heat conducting member 30 and a liquid cooling pipe connecting member 40.
Specifically, the first current bank 10 connected to the positive electrode of the power supply and the second current bank 11 connected to the negative electrode of the power supply are electrically connected to the relay 20. The BMS module is connected to the relay 20, and controls the opening and closing of a load loop formed by the first current bank 10 and the second current bank 11 through the relay 20.
The heat conducting member 30 is respectively in contact with the first current bank 10 and the second current bank 11, and the heat conducting member 30 is connected to the external liquid cooling tube 50 through the liquid cooling tube connecting member 40, so that heat generated on the first current bank 10 and the second current bank 11 is transferred to the liquid cooling tube 50 through the heat conducting member 30 to dissipate heat.
Further, in the embodiment of the present invention, the first current bank 10 or the second current bank 11 is connected with a current sensor, the current sensor is electrically connected with the BMS module, and the BMS module controls the relay 20 to be opened or closed according to the current data collected by the current sensor. When the current sensor detects that the current on the first current bank 10 or the second current bank 11 is too large, the BMS module may automatically send a control signal to the relay 20 to control the circuit formed by the first current bank 10 and the second current bank 11 to be disconnected, so as to avoid safety accidents caused by excessive heating value of the first current bank 10 or the second current bank 11.
In summary, the embodiment of the invention provides a power supply cutting device and a battery system, wherein the power supply cutting device is provided with a heat conducting piece which is connected with an external liquid cooling pipe and is contacted with a first current row and a second current row, so that heat generated on the first current row and the second current row can be transferred to the liquid cooling pipe through the heat conducting piece, the heat dissipation efficiency of the first current row and the second current row is improved, the potential safety hazard of the power supply cutting device is reduced, and the safety of the battery system is improved.
The above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The power supply cutting device is characterized by comprising a first current row, a second current row, a relay, a heat conducting piece and a liquid cooling pipe connecting piece;
the first current row connected with the positive electrode of the power supply and the second current row connected with the negative electrode of the power supply are electrically connected with a relay, and the relay controls the opening and closing of a load loop formed by the first current row and the second current row;
the heat conducting piece is respectively contacted with the first current row and the second current row, and the heat conducting piece is connected with an external liquid cooling pipe through the liquid cooling pipe connecting piece, so that heat generated on the first current row and the second current row is transferred to the liquid cooling pipe through the heat conducting piece to dissipate heat.
2. The power cut-off device of claim 1, further comprising a base to which the first current bank, the second current bank, and the relay are secured;
the base is also provided with a fixed plate, the first current row and the second current row are arranged along the extending direction of the fixed plate, and the heat conducting piece is arranged between the first current row and the fixed plate and between the second current row and the fixed plate.
3. The power cut-off device according to claim 2, wherein a gap between the heat conductive member and the first current row and the second current row is filled with a heat conductive medium.
4. The power shut-off device according to claim 3, wherein the liquid-cooled tube connector comprises a first connecting tube and a second connecting tube;
the first connecting pipe is connected with the liquid cooling pipe, and the second connecting pipe is connected with the heat conducting piece.
5. The power cut-off device according to claim 4, wherein inner walls of the first connecting pipe and the second connecting pipe respectively form a receiving channel;
the liquid cooling Guan Rong is arranged in an accommodating channel formed by the inner wall of the first connecting pipe, and one end of the heat conducting piece is accommodated in an accommodating channel formed by the inner wall of the second connecting pipe;
the shape of the accommodating channel is respectively matched with the shapes of the outer walls of the liquid cooling pipe and the heat conducting piece.
6. The power cut-off device according to claim 4, wherein a bent portion is provided at an end of the heat conductive member connected to the second connection pipe, and the heat conductive member is bent upward with respect to the base by the bent portion.
7. The power cut-off device of claim 1, further comprising a fuse in series with the first current bank or the second current bank, the fuse cutting off a loop formed by the first current bank and the second current bank when a load current is greater than a defined value.
8. The power shut-off device according to any one of claims 1 to 7, wherein said heat conductive member is made of a heat pipe or a hot plate, and said liquid-cooled pipe connecting member is made of copper.
9. A battery system, characterized in that the battery system comprises a BMS module, a liquid cooling pipe and a power supply cut-off device; wherein,,
the power supply cutting device comprises a first current row, a second current row, a relay, a heat conducting piece and a liquid cooling pipe connecting piece;
the first current row connected with the positive electrode of the power supply and the second current row connected with the negative electrode of the power supply are electrically connected with the relay;
the BMS module is connected with the relay and controls the opening and closing of a load loop formed by the first current row and the second current row through the relay;
the heat conducting piece is respectively contacted with the first current row and the second current row, and the heat conducting piece is connected with an external liquid cooling pipe through the liquid cooling pipe connecting piece, so that heat generated on the first current row and the second current row is transferred to the liquid cooling pipe through the heat conducting piece to dissipate heat.
10. The battery system of claim 9, wherein the first current bank or the second current bank is connected with a current sensor;
the current sensor is electrically connected with the BMS module, and the BMS module controls the relay to be opened or closed according to current data collected by the current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810928975.9A CN108667109B (en) | 2018-08-15 | 2018-08-15 | Power supply cut-off device and battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810928975.9A CN108667109B (en) | 2018-08-15 | 2018-08-15 | Power supply cut-off device and battery system |
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| Publication Number | Publication Date |
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| CN108667109A CN108667109A (en) | 2018-10-16 |
| CN108667109B true CN108667109B (en) | 2023-09-15 |
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| CN201810928975.9A Active CN108667109B (en) | 2018-08-15 | 2018-08-15 | Power supply cut-off device and battery system |
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| CN109888724B (en) * | 2019-02-27 | 2024-01-09 | 武汉司德宝电气有限公司 | Quick breaking device and system with safety compensation |
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| CN108028337A (en) * | 2016-01-15 | 2018-05-11 | 株式会社Lg化学 | Battery pack including the battery module for being installed into two layers |
| CN108172732A (en) * | 2018-02-27 | 2018-06-15 | 华霆（合肥）动力技术有限公司 | Battery modules and battery system |
| CN208508586U (en) * | 2018-08-15 | 2019-02-15 | 华霆（合肥）动力技术有限公司 | Power cut-off device and battery system |
-
2018
- 2018-08-15 CN CN201810928975.9A patent/CN108667109B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108028337A (en) * | 2016-01-15 | 2018-05-11 | 株式会社Lg化学 | Battery pack including the battery module for being installed into two layers |
| CN206388826U (en) * | 2017-01-25 | 2017-08-08 | 安徽江淮汽车集团股份有限公司 | A kind of cold pipe assembly of the battery fluid of electrokinetic cell and electrokinetic cell |
| CN108172732A (en) * | 2018-02-27 | 2018-06-15 | 华霆（合肥）动力技术有限公司 | Battery modules and battery system |
| CN208508586U (en) * | 2018-08-15 | 2019-02-15 | 华霆（合肥）动力技术有限公司 | Power cut-off device and battery system |
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| CN108667109A (en) | 2018-10-16 |
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