CN114843696A - Battery system and vehicle - Google Patents
Battery system and vehicle Download PDFInfo
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- CN114843696A CN114843696A CN202210533274.1A CN202210533274A CN114843696A CN 114843696 A CN114843696 A CN 114843696A CN 202210533274 A CN202210533274 A CN 202210533274A CN 114843696 A CN114843696 A CN 114843696A
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- battery
- box
- battery box
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to the technical field of batteries, and provides a battery system and a vehicle, wherein the battery system comprises at least two battery boxes, battery modules and high-voltage boxes, the high-voltage boxes are arranged in one of the battery boxes, and each battery box is internally provided with a battery module; the battery modules are connected in series, the positive electrode of the battery module at the head end is electrically connected with the positive battery interface of the high-voltage box, and the negative electrode of the battery module at the tail end is electrically connected with the negative battery interface of the high-voltage box; the battery boxes are stacked together along the vertical direction, the wall surfaces of the end parts, close to each other, of the adjacent battery boxes are provided with threading holes, and the threading holes are used for connecting the electric wires of the battery modules located in the adjacent battery boxes to penetrate through. So set up, all set up the high-pressure box and connect the electric wire in the inside of battery box, need not to use waterproof plug and waterproof socket, solved the battery system among the prior art need set up the problem that manufacturing cost is high, the reliability is poor that waterproof plug and waterproof socket lead to.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery system and a vehicle.
Background
With the development of commercial vehicles into electric vehicles, commercial vehicle batteries are also rapidly developed. Because the energy consumption demand of commercial car is big, in order to satisfy the demand of its big electric quantity, generally superpose multilayer battery box, make a plurality of batteries and high-pressure box connect and form a battery system.
In the prior art, adjacent batteries are generally connected together by using a lead outside the batteries and then connected with a high-voltage box. In order to meet the requirements of water resistance and dust resistance, a waterproof plug and a waterproof socket are required to be arranged on the lead, the cost of the waterproof plug and the cost of the waterproof socket are high, the waterproof socket is prone to failure, the production cost of the battery system is high, and the reliability of the battery system is poor.
Therefore, how to solve the problems of high production cost and poor reliability caused by the need of providing a waterproof plug and a waterproof socket in the battery system in the prior art becomes an important technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention provides a battery system and a vehicle, which are used for solving the defects of high production cost and poor reliability caused by the fact that a waterproof plug and a waterproof socket are required to be arranged in the battery system in the prior art.
The invention provides a battery system, which comprises a battery box, a battery module and a high-voltage box, wherein:
the battery boxes are provided with at least two, the high-voltage box is arranged inside one of the battery boxes, and the battery module is arranged inside each battery box;
the battery modules are connected in series, the positive electrode of the battery module at the head end is electrically connected with the positive battery interface of the high-voltage box, and the negative electrode of the battery module at the tail end is electrically connected with the negative battery interface of the high-voltage box;
the battery box stacks together along vertical direction, and is adjacent be provided with the through wires hole on the wall of the tip that the battery box is close to mutually, the through wires hole sets up to be used for connecting and is located adjacent in the battery box the wiring of battery module passes.
According to the battery system provided by the invention, the battery box positioned at the top is a top battery box, the battery box positioned at the bottom is a bottom battery box, and the battery box positioned between the top battery box and the bottom battery box is a middle battery box;
the top battery box comprises a first box body with an open upper end and a cover body capable of being in sealing connection with the open end of the first box body, the bottom battery box and the middle battery box respectively comprise second box bodies with open upper ends, the bottom end of the second box body positioned above and the open end of the second box body positioned below are in sealing connection in the adjacent second box bodies, and the bottom end of the first box body and the open end of the second box body positioned above are in sealing connection;
the threading hole sets up the diapire of first box with the diapire of middle battery box the second box.
According to the battery system provided by the invention, the high-voltage box is arranged inside the bottom battery box, a third group of battery modules connected with the high-voltage box is arranged in the bottom battery box, and the third group of battery modules comprises at least two battery modules connected in series;
the top battery box with be provided with first group battery module and second group battery module in the middle battery box, first group battery module with second group battery module all includes two at least series connection battery module is located in the top battery box first group battery module with second group battery module series connection, each first group battery module is series connection in proper order, each second group battery module is series connection in proper order, is located the tip first group battery module with second group battery module respectively with third group battery module with the high-pressure box electricity is connected.
According to the battery system provided by the invention, two pairs of threading holes are arranged, the two pairs of threading holes are respectively positioned at two ends of the battery box in the length direction, and each pair of threading holes is distributed at two ends of the battery box along the width direction of the battery box.
According to the battery system provided by the invention, the side wall of the battery box is provided with the through hole and the cover plate for covering the through hole, the through hole is arranged to be opposite to the connecting point of the power connection wire and the battery module, and the cover plate is detachably connected with the battery box.
According to the battery system provided by the invention, the battery box is internally provided with two heat exchange plates for exchanging heat with the battery module and two main pipes for circulating heat exchange media, the two main pipes are respectively connected with the inlet and the outlet of the heat exchange plates, the main pipes of the adjacent battery boxes are in one-to-one correspondence and are mutually communicated, the lower end of the main pipe of the battery box positioned at the lowest part is a sealed end, and the upper end of the main pipe of the battery box positioned at the highest part extends to the outside of the battery box.
According to the battery system provided by the invention, the main pipeline and the battery box form an integrated structure, and the main pipeline adjacent to the battery box is correspondingly communicated through a flexible pipe fitting.
According to the battery system provided by the invention, the flexible pipe comprises a first pipe and a second pipe, and the first end of the first pipe and the first end of the second pipe are respectively connected with the adjacent battery boxes;
one of the second end of the first pipe fitting and the second end of the second pipe fitting can extend into the other pipe fitting, and the side walls of the first pipe fitting and the second pipe fitting are in pressing contact.
According to the battery system provided by the invention, the battery box is provided with mounting grooves, the mounting grooves are positioned at two ends of the main pipeline, flanges are arranged at the first end of the first pipe fitting and the first end of the second pipe fitting, the flexible pipe fitting further comprises a pressing piece, and the pressing piece is sleeved outside the first pipe fitting or the second pipe fitting and is fixedly connected with the mounting grooves.
The invention further provides a vehicle comprising the battery system.
The battery system provided by the invention comprises at least two battery boxes, battery modules and high-voltage boxes, wherein the high-voltage boxes are arranged in one of the battery boxes. All be provided with the battery module in every battery box, each battery module series connection back, the positive pole that is located the battery module of head end and the negative pole that is located the battery module of tail end are connected with the battery positive interface and the battery negative interface electricity of high-voltage box respectively. The battery boxes are stacked together along the vertical direction, the wall surfaces of the end parts, close to the adjacent battery boxes, of the adjacent battery boxes are provided with threading holes, and after the threading holes are formed in the threading holes, two ends of each threading hole are respectively electrically connected with the battery modules in the adjacent battery boxes. So set up, all set up the high-pressure box and connect the electric wire in the inside of battery box, avoid connecting the electric wire and contact such as external dust, moisture, improved battery system's reliability, need not to use waterproof plug and waterproof socket, both satisfied waterproof, dirt-proof requirement, reduced battery system's manufacturing cost again to battery system among the prior art need set up the manufacturing cost height that waterproof plug and waterproof socket lead to, the poor problem of reliability.
Further, the vehicle according to the present invention includes the battery system as described above, and therefore, also has various advantages as described above.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of an external structure of a battery system provided by the present invention;
FIG. 2 is a schematic view of the internal structure of a bottom battery box according to the present invention;
fig. 3 is a schematic view of the internal structure of the middle battery box provided by the present invention;
FIG. 4 is a schematic view of the structure of the electric wire and the wire hole provided by the present invention;
FIG. 5 is a schematic structural diagram of a first case provided in the present invention;
FIG. 6 is a schematic structural view of a second case of the bottom battery case provided by the present invention;
fig. 7 is a first schematic view of a connection structure between battery modules in each battery box according to the present invention;
fig. 8 is a second schematic view of a connection structure between battery modules in the battery boxes according to the present invention;
FIG. 9 is a schematic view of a connection structure between adjacent second cases according to the present invention;
FIG. 10 is an enlarged view of I of FIG. 9;
fig. 11 is a schematic view of a connection structure between two main pipes provided by the present invention.
Reference numerals:
1: a battery module; 2: a high voltage box; 3: a battery positive interface; 4: a battery negative interface; 5: threading holes; 6: connecting a wire; 7: a top battery box; 8: a bottom battery box; 9: an intermediate battery box; 10: a first case; 11: a cover body; 12: a second case; 13: a third group of battery modules; 14: a first group of battery modules; 15: a second group of battery modules; 16: a cover plate; 17: a heat exchange plate; 18: a main pipeline; 19: a first pipe member; 20: a second pipe member; 21: mounting grooves; 22: a compression member; 23: a gasket; 24: a seal ring; 25: a seal ring; 26: an output positive interface; 27: an output negative interface; 28: and (5) installing a panel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The battery system of the present invention will be described below with reference to fig. 1 to 11.
As shown in fig. 1 to 11, a battery system according to an embodiment of the present invention includes a battery box, a battery module 1, and a high voltage box 2.
Specifically, the battery cases are provided with at least two, and the high-voltage cartridge 2 is provided inside one of the battery cases. The high-voltage box 2 is provided with a battery positive interface 3, a battery negative interface 4, an output positive interface 26 and an output negative interface 27
The inside of every battery box all is provided with battery module 1, and each battery module 1 all has anodal utmost point post and negative pole utmost point post, is in the same place each battery module 1 series connection through the connecting wire. After the battery modules 1 are connected in series, the positive electrode pole of the battery module 1 at the head end is electrically connected with the positive battery interface 3 of the high-voltage box 2, and the negative electrode pole of the battery module 1 at the tail end is electrically connected with the negative battery interface 4 of the high-voltage box 2. The output positive interface 26 and the output negative interface 27 of the high-voltage box 2 are arranged on the wall surface of the battery box and are respectively used for being electrically connected with the positive pole of the load and the negative pole of the load so as to supply power to the load. Specifically, a mounting panel 28 for mounting the above-described output positive interface 26 and output negative interface 27 may be provided on the bottom surface of the battery box.
The battery boxes are stacked together along the vertical direction, the wall face of the end portion, close to each other, of each adjacent battery box is provided with the threading hole 5, the electric wire 6 can penetrate through the threading holes, and after the electric wire 6 passes through the threading holes 5, the two ends of the electric wire are respectively electrically connected with the battery modules 1 in the adjacent battery boxes so as to realize connection of the battery modules 1 in the adjacent battery boxes.
So set up, all set up high-pressure box 2 and electric wire 6 in the inside of battery box, avoided electric wire 6 and external dust, contact such as moisture, be favorable to improving battery system's reliability, and need not to use waterproof plug and waterproof socket, save space, both satisfied waterproof, dirt-proof requirement, battery system's manufacturing cost has been reduced again, thereby battery system among the prior art need set up the manufacturing cost height that waterproof plug and waterproof socket lead to, the poor problem of reliability.
The connecting wires and the connecting wires 6 can be conductive wires or conductive bars.
For convenience of explanation, it is now specified that, among the above battery cases, the uppermost battery case is the top battery case 7, the lowermost battery case is the bottom battery case 8, and the battery case between the top battery case 7 and the bottom battery case 8 is the middle battery case 9.
It should be noted that, if at least three battery boxes are provided, at least one middle battery box 9 is provided; if only two battery compartments are provided, the two battery compartments are a top battery compartment 7 and a bottom battery compartment 8, respectively, in which case there is no intermediate battery compartment 9.
In the embodiment of the invention, the number of the battery boxes and the number of the battery modules 1 in the battery system are not limited, and the number can be determined according to the electric quantity requirement. The number of the intermediate battery boxes 9 is determined according to the determined number of the required battery boxes and the battery modules 1, and the versatility and the flexibility are high.
In this embodiment, the top battery box 7 includes a first box 10 and a cover 11, the upper end of the first box 10 is an open structure, and the cover 11 can be connected to the open end of the first box 10 in a sealing manner. The bottom battery box 8 and the middle battery box 9 both only comprise a second box body 12, and the upper end of the second box body 12 is of an open structure.
Of the adjacent second cases 12, the second case 12 located above is supported above the second case 12 located below, and the bottom end of the second case 12 located above is hermetically connected to the open end of the second case 12 located below. Specifically, the open end and the bottom end of the second box 12 are provided with connecting flanges, a sealing ring 24 is arranged between the connecting flanges of two adjacent second boxes 12, the sealing ring 24 extends along the circumferential direction of the second boxes 12, and the connecting flanges of the two second boxes 12 are fastened and connected by bolts. The connecting flange of the bottom battery box 8 is used for connection with a target mounting position of a vehicle or the like.
Similarly, the first casing 10 is supported above the second casing 12, and the bottom end of the first casing 10 is hermetically connected to the open end of the second casing 12. Specifically, the open end and the bottom end of the first box 10 are both provided with a connecting flange, a sealing ring 24 is arranged between the connecting flange at the bottom end of the first box 10 and the connecting flange at the open end of the second box 12, the sealing ring 24 extends along the circumferential direction of the second box 12, and the connecting flange at the bottom end of the first box 10 and the connecting flange at the open end of the second box 12 are fastened and connected by bolts.
The edge of the cover 11 is provided with a connection hole, a seal ring 24 is arranged between the cover 11 and the first box 10, the seal ring 24 extends along the circumferential direction of the first box 10, and the cover 11 is fastened and connected with the connection flange of the first box 10 by using bolts.
The threading holes 5 are provided in the bottom wall of the first case 10 and the bottom wall of the second case 12 of the intermediate battery case 9, as shown in fig. 5. The specific position of threading hole 5 at the diapire can be according to the anodal utmost point post of battery module 1 and the position determination that negative pole post is located.
In the embodiment of the invention, the high-voltage box 2 is arranged inside the bottom battery box 8, the battery modules 1 arranged in the bottom battery box 8 are the third group of battery modules 13, and the third group of battery modules 13 are electrically connected with the high-voltage box 2. The third group of battery modules 13 and the high voltage box 2 are distributed along the length direction of the battery box, the third group of battery modules 13 comprises at least two battery modules 1, and each battery module 1 of the third group of battery modules 13 is distributed along the width direction of the battery box and is sequentially connected in series.
The battery modules 1 in the top battery box 7 and the middle battery box 9 are equally divided into a first group of battery modules 14 and a second group of battery modules 15, the first group of battery modules 14 and the second group of battery modules 15 are distributed along the length direction of the battery boxes, after the battery boxes are stacked together, the first group of battery modules 14 are located above the third group of battery modules 13, and the second group of battery modules 15 are located above the high-voltage box 2, referring to fig. 7 and 8.
The first group of battery modules 14 and the second group of battery modules 15 both include at least two battery modules 1, and each battery module 1 of the first group of battery modules 14 is distributed along the width direction of the battery box and is connected together in series in sequence. The battery modules 1 of the second group of battery modules 15 are distributed along the width direction of the battery box and are connected together in series in sequence.
The first group of battery modules 14 and the second group of battery modules 15 located in the top battery box 7 are connected in series, so that the respective first group of battery modules 14 are connected in series in sequence and are connected in series with the third group of battery modules 13, and the respective second group of battery modules 15 are connected in series in sequence and are electrically connected with the high voltage box 2.
Specifically, if the positive electrode post of the third group of battery modules 13 is electrically connected to the positive battery interface 3 of the high-voltage box 2, the negative electrode post of the third group of battery modules 13 is electrically connected to the positive electrode post of the first group of battery modules 14, and so on. The cathode pole of the second group of battery modules 15 is electrically connected with the battery negative interface 4 of the high-voltage box 2.
So set up, total positive and negative pole and high-pressure box 2 all are located battery system's bottom behind all battery module 1 series connection of battery system, and total positive and total negative pole are all shorter with the distance of high-pressure box 2, are favorable to shortening the connecting wire and the length of connecting wire 6, simplify the interconnecting link in the battery system, make things convenient for the modularization equipment.
When the first group of battery modules 14 and the second group of battery modules 15 in the top battery box 7 are connected, a fuse may be provided on a connection line between the two to cut off a circuit by fusing itself to protect a battery system when a fault such as a short circuit occurs to increase a current to a certain value.
In this embodiment, two pairs of threading holes 5 are respectively formed in the first case 10 of the top battery box 7 and the second case 12 of the middle battery box 9, as shown in fig. 5, the two pairs of threading holes 5 are respectively located at two ends of the battery box in the length direction and respectively correspond to the first group of battery modules 14 and the second group of battery modules 15, one pair of threading holes 5 is used for passing through the electric wire 6 connected with the first group of battery modules 14, and the other pair of threading holes 5 is used for passing through the electric wire 6 connected with the second group of battery modules 15. Each pair of threading holes 5 are distributed along the width direction of the battery box, are arranged at two ends of the battery box and are opposite to the battery modules 1 positioned at the edge in the first group of battery modules 14 or the second group of battery modules 15.
In the embodiment, the through hole and the cover plate 16 are arranged on the side wall of the battery box, the through hole is just opposite to the connection point of the power connection wire 6 and the battery module 1, the connection between the power connection wire 6 and the battery module 1 is facilitated, and the through hole can be used for overhauling and maintaining and is convenient to operate. The cover plate 16 is used to cover the through-hole to ensure the sealability of the battery case. The cover plate 16 is detachably connected to the battery box, and may be connected to the battery box by a flange structure.
It should be noted that the positive electrode terminal and the negative electrode terminal of the battery module 1 may be designed to be connected to the connection wire or the electric wire 6 from the top of the battery module 1, or connected to the connection wire or the electric wire 6 from the side of the battery module 1, so as to facilitate assembly and connection.
In the embodiment of the invention, a heat exchange plate 17 and a main pipeline 18 are arranged in a battery box, referring to fig. 9, the heat exchange plate 17 is arranged at the bottom inside the battery box, a battery module 1 is arranged above the heat exchange plate 17, the battery module 1 is in contact with the heat exchange plate 17, and the heat exchange plate exchange heat to regulate the temperature of the battery module 1, so that the battery module 1 works in a proper temperature range.
The two main pipes 18 are provided, and the two main pipes 18 are respectively connected with the inlet and the outlet of the heat exchange plate 17 for circulating the heat exchange medium.
When stacking each battery box together, the trunk line 18 one-to-one of adjacent battery boxes and communicate each other, wherein, the lower extreme that is located the trunk line 18 of battery box of below is sealed end, and the upper end that is located the trunk line 18 of battery box of the top extends to the outside of battery box for be connected with the temperature control unit. The temperature control unit is used for controlling and adjusting the temperature of the heat exchange medium and controlling the heat exchange medium to circulate in the main pipe 18. The heat transfer medium in the temperature control unit can flow to in the heat transfer plate 17 when flowing through the main pipeline 18 of each battery box, after with battery module 1 heat transfer, flows back to the temperature control unit through export and another main pipeline 18 to the realization is to the thermal management of battery module 1.
A pipe connection is provided on the side wall of the main pipe 18 for connection with the heat exchanger plate 17. Two heat exchange plates 17 are arranged in the top battery box 7 and the middle battery box 9 and respectively correspond to the first group of battery modules 14 and the second group of battery modules 15, and the two heat exchange plates 17 are respectively connected with the pipeline interfaces through two connecting pipelines.
In this embodiment, the main pipe 18 and the battery box are integrated, and specifically, the main pipe 18 may be close to the side wall of the battery box and integrally cast with the battery box. When adjacent battery boxes are stacked together, the main pipelines 18 of the adjacent battery boxes are correspondingly communicated through the flexible pipe fittings.
In this embodiment, the flexible pipe member includes a first pipe member 19 and a second pipe member 20, a first end of the first pipe member 19 and a first end of the second pipe member 20 are respectively connected to the adjacent battery boxes, and one of a second end of the first pipe member 19 and a second end of the second pipe member 20 may extend into the other, and sidewalls of the first pipe member and the second pipe member are in pressing contact, as shown in fig. 11.
Specifically, make the first end of first pipe fitting 19 be connected with the lower extreme that is located the trunk line 18 of the battery box of top, make the first end of second pipe fitting 20 be connected with the upper end that is located the trunk line 18 of the battery box of below, when stacking two battery boxes, the second end of first pipe fitting 19 can stretch into the inside of the second end of second pipe fitting 20 and the lateral wall of first pipe fitting 19 and the inside wall extrusion contact of second pipe fitting 20, or the second end of second pipe fitting 20 can stretch into the inside of the second end of first pipe fitting 19, and the lateral wall of second pipe fitting 20 and the inside wall extrusion contact of first pipe fitting 19, guarantee the leakproofness of hookup location between first pipe fitting 19 and the second pipe fitting 20, convenient modularization equipment.
In an embodiment, at least one of the first tube 19 and the second tube 20 may have an elastic deformation capability, such as rubber, so as to achieve a sealing connection while avoiding a sealing failure when vibration occurs.
To further ensure the tightness between the second end of the first tubular element 19 and the second end of the second tubular element 20, a sealing ring 25 may be provided therebetween.
If two battery boxes stack, second pipe fitting 20 can stretch into the inside to first pipe fitting 19, then can set up first pipe fitting 19 into rubber material, set up second pipe fitting 20 into plastic or metal material, set up sealing ring 25 on the lateral wall of second pipe fitting 20.
It should be noted that the sealing ring 25 can be integrally formed with the second pipe 20 by a two-shot molding process.
When two battery boxes are stacked, in order to ensure that the second pipe 20 can be aligned with the first pipe 19 and smoothly extend into the first pipe 19, a diameter-variable portion may be provided at the second end of the first pipe 19, so that the diameter of the diameter-variable portion gradually increases along the direction from the first end to the second end of the first pipe 19, i.e., a bell mouth is formed at the second end of the first pipe 19. The arrangement of the diameter-variable part can adapt to the installation error between the adjacent battery boxes.
In this embodiment, the battery box is provided with mounting grooves 21, and the mounting grooves 21 are located at two ends of the main pipe 18 and are used for mounting the first pipe 19 and the second pipe 20. As shown in fig. 10, flanges are disposed at both the first end of the first pipe 19 and the first end of the second pipe 20, the flexible pipe further includes a pressing member 22, the pressing member 22 is annular, the pressing member 22 is sleeved outside the first pipe 19 or outside the second pipe 20, and the flange is located at one side of the pressing member 22 close to the bottom wall of the mounting groove 21, and the pressing member 22 is fixedly connected to the mounting groove 21, so that the first pipe 19 and the second pipe 20 can be mounted.
Specifically, an internal thread may be provided on the side wall of the mounting groove 21, an external thread may be provided on the outer side wall of the pressing member 22, and the pressing member 22 may be fixedly connected to the mounting groove 21 by screwing the pressing member 22. A gasket 23 is arranged between the pressing piece 22 and the flange, so that the flange is stressed uniformly, and the sealing property between the flange and the bottom wall of the mounting groove 21 is ensured.
It should be noted that, when the bottom battery box 8 and the middle battery box 9 each have only the second box 12 and the top battery box 7 has the first box 10 and the cover 11, the flexible pipe members are provided between the adjacent second boxes 12, between the first box 10 and the second box 12 located uppermost, and between the first box 10 and the cover 11. A corresponding main pipe 18 is arranged on the cover body 11, the temperature control unit is arranged on the cover body 11, and the temperature control unit and the main pipe 18 on the cover body 11 are connected through a pipeline.
On the other hand, the embodiment of the invention also provides a vehicle, which comprises the battery system provided by any one of the embodiments. The battery system has the advantages of low production cost and high reliability. The vehicle in the embodiment also has the advantages of low production cost and high reliability. The derivation process of the beneficial effect of the vehicle in the embodiment of the present invention is substantially similar to the derivation process of the beneficial effect of the battery system, and therefore, details are not repeated here.
The vehicle in the embodiment may be, but is not limited to, an engineering vehicle such as a commercial automobile, a fire truck, a mixer truck, and the like.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a battery system, its characterized in that includes battery box, battery module and high-pressure box, wherein:
the number of the battery boxes is at least two, the high-voltage box is arranged in one of the battery boxes, and the battery module is arranged in each battery box;
the battery modules are connected in series, the positive electrode of the battery module at the head end is electrically connected with the positive battery interface of the high-voltage box, and the negative electrode of the battery module at the tail end is electrically connected with the negative battery interface of the high-voltage box;
the battery box stacks together along vertical direction, and is adjacent be provided with the through wires hole on the wall of the tip that the battery box is close to mutually, the through wires hole sets up to be used for connecting and is located adjacently the battery box in the electric wire that connects of battery module passes.
2. The battery system according to claim 1, wherein the battery box located uppermost is a top battery box, the battery box located lowermost is a bottom battery box, and the battery box located between the top battery box and the bottom battery box is a middle battery box;
the top battery box comprises a first box body with an open upper end and a cover body capable of being in sealing connection with the open end of the first box body, the bottom battery box and the middle battery box respectively comprise second box bodies with open upper ends, the bottom end of the second box body positioned above and the open end of the second box body positioned below are in sealing connection in the adjacent second box bodies, and the bottom end of the first box body and the open end of the second box body positioned above are in sealing connection;
the threading hole sets up the diapire of first box with the diapire of middle battery box the second box.
3. The battery system according to claim 2, wherein the high voltage box is disposed inside the bottom battery box, a third group of battery modules connected with the high voltage box is disposed inside the bottom battery box, and the third group of battery modules includes at least two of the battery modules connected in series;
the top battery box with be provided with first group battery module and second group battery module in the middle battery box, first group battery module with second group battery module all includes two at least series connection battery module is located in the top battery box first group battery module with second group battery module series connection, each first group battery module is series connection in proper order, each second group battery module is series connection in proper order, is located the tip first group battery module with second group battery module respectively with third group battery module with the high-pressure box electricity is connected.
4. The battery system according to claim 3, wherein two pairs of the threading holes are provided, the two pairs of the threading holes are respectively located at two ends of the battery box in the length direction, and each pair of the threading holes are distributed at two ends of the battery box in the width direction of the battery box.
5. The battery system according to claim 1, wherein a through hole and a cover plate for covering the through hole are formed in the side wall of the battery box, the through hole is arranged right opposite to the connection point of the electric wire and the battery module, and the cover plate is detachably connected with the battery box.
6. The battery system according to claim 1, wherein a heat exchange plate for exchanging heat with the battery module and a main pipe for circulating a heat exchange medium are provided in the battery box, the number of the main pipes is two, the two main pipes are respectively connected with an inlet and an outlet of the heat exchange plate, the main pipes of the adjacent battery boxes correspond to each other and are communicated with each other, the lower end of the main pipe of the battery box positioned at the lowermost position is a sealed end, and the upper end of the main pipe of the battery box positioned at the uppermost position extends to the outside of the battery box.
7. The battery system according to claim 6, wherein the main pipe is formed as an integral structure with the battery box, and the main pipe of the adjacent battery box is correspondingly communicated through a flexible pipe member.
8. The battery system of claim 7, wherein the flexible tube member includes a first tube member and a second tube member, and a first end of the first tube member and a first end of the second tube member are respectively connected to the adjacent battery cases;
one of the second end of the first pipe fitting and the second end of the second pipe fitting can extend into the other pipe fitting, and the side walls of the first pipe fitting and the second pipe fitting are in pressing contact.
9. The battery system of claim 8, wherein the battery box is provided with mounting grooves, the mounting grooves are located at two ends of the main pipe, the first end of the first pipe and the first end of the second pipe are both provided with flanges, the flexible pipe further comprises a pressing member, and the pressing member is sleeved outside the first pipe or outside the second pipe and is fixedly connected with the mounting grooves.
10. A vehicle characterized by comprising the battery system according to any one of claims 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024045590A1 (en) * | 2022-08-31 | 2024-03-07 | 三一锂能有限公司 | Battery system and electric working machine |
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| CN114843696B (en) | 2023-03-03 |
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Effective date of registration: 20230301 Address after: 410100 201, Floor 2, Maker Building, Sany Industrial City, No. 1, Sany Road, Changsha Economic Development Zone, Changsha, Hunan Province, China (Hunan) Pilot Free Trade Zone Applicant after: Sany Lithium Energy Co.,Ltd. Address before: 102206 5th floor, building 6, 8 Beiqing Road, Changping District, Beijing Applicant before: SANY HEAVY INDUSTRY Co.,Ltd. |
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