CN115224410A - Power battery pack - Google Patents

Power battery pack Download PDF

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Publication number
CN115224410A
CN115224410A CN202110677008.1A CN202110677008A CN115224410A CN 115224410 A CN115224410 A CN 115224410A CN 202110677008 A CN202110677008 A CN 202110677008A CN 115224410 A CN115224410 A CN 115224410A
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CN
China
Prior art keywords
cooling
liquid
battery
port
groove
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Granted
Application number
CN202110677008.1A
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Chinese (zh)
Other versions
CN115224410B (en
Inventor
冯博
于洋磊
张涵宇
曾志新
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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Priority to CN202110677008.1A priority Critical patent/CN115224410B/en
Publication of CN115224410A publication Critical patent/CN115224410A/en
Application granted granted Critical
Publication of CN115224410B publication Critical patent/CN115224410B/en
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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
    • 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
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
    • H01M10/6235—Power tools
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • 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
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Computer Hardware Design (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention relates to a power battery pack which comprises a storage box, a sealing cover, a confluence structure, a clamping structure, a cooling pipeline and a stop block, wherein the storage box is provided with a storage box body; the storage box is provided with a plurality of placing grooves and a plurality of cooling cavities, the placing grooves are used for accommodating batteries, the cooling cavities are arranged outside each placing groove, and the cavity walls of the cooling cavities are provided with at least one first opening penetrating through the corresponding placing groove; the peripheral wall of the first opening is sleeved with a clamping structure, and the clamping structure seals the corresponding first opening; the cooling pipeline is provided with a liquid separation port communicated with the cooling cavity, and the stop block is movably arranged on the storage box and can be opened and closed. When a battery is inserted into the placing groove, the battery drives the stop block to open the liquid separation port, and the clamping structure automatically clamps the battery under the drive of cooling liquid, so that the mounting efficiency of the battery and the fixing reliability of the battery are improved; the sealing cover is opened, the cooling liquid in the power battery pack is pumped out, the battery is not clamped by the clamping structure any more, the battery can be taken out from the storage box, and the battery pack is convenient to disassemble.

Description

Power battery pack
Technical Field
The invention belongs to the field of power batteries, and particularly relates to a power battery pack.
Background
The power battery is a power supply for providing a power source for the tool, and the power battery can generate a large amount of heat in the use process and is generally cooled and protected in a water cooling mode; inside the multiunit lithium cell that includes usually of current power battery, the cooling tube is banding cavity rubber strip usually, and the rubber strip needs the staggered arrangement between the multiunit lithium cell to adopt glue to fix lithium cell and cooling tube, this scheme is inconvenient to assemble, dismantle lithium cell and cooling tube, and the high temperature of lithium cell when the operation leads to glue to melt very easily, and then leads to the lithium cell to drop.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the power battery pack is provided aiming at the problem that the existing scheme is inconvenient to assemble and disassemble.
In order to solve the technical problem, an embodiment of the invention provides a power battery pack, which comprises a storage box, a sealing cover, a confluence structure, a clamping structure, a cooling pipeline and a stop block, wherein the storage box is provided with a plurality of through holes;
the confluence structure is used for converging electric energy of the battery and connecting an external electric appliance;
the storage box is provided with a plurality of placing grooves and a plurality of cooling cavities, the placing grooves are used for accommodating batteries, the cooling cavities are arranged outside each placing groove, and the cavity wall of each cooling cavity is provided with at least one first opening which penetrates through the corresponding placing groove;
the peripheral wall of the first opening is sleeved with the clamping structure, and the clamping structure seals the corresponding first opening;
the cooling pipeline is provided with a liquid distribution port communicated with the cooling cavity, and the stop block is movably arranged on the preservation box and can open and close the liquid distribution port;
when the batteries are placed in the placing grooves:
the stop block can open the liquid separation port under the driving of the battery; the clamping structure can clamp the battery under the drive of cooling liquid entering the cooling cavity from the liquid distribution port.
Optionally, the clamping structure comprises a soft rubber sleeve and a clamping piece, the soft rubber sleeve is sleeved on the first opening, and the clamping piece is fixed on the soft rubber sleeve and used for abutting against the periphery of the battery;
the soft rubber sleeve closes the corresponding first opening, or the clamping piece and the soft rubber sleeve close the corresponding first opening.
Optionally, the periphery of each of the installation grooves corresponds to a plurality of the first openings, and at least part of the first openings are arranged at intervals in the circumferential direction of the installation groove.
Optionally, the bus structure comprises a power connection mechanism and a first conductive line;
the power connection mechanisms are arranged in one-to-one correspondence with the placing grooves; the power connection mechanism comprises a conductive elastic sheet; the conductive elastic sheet is movably arranged at the bottom of the placing groove and is used for electrically connecting the electrode of the corresponding battery facing the bottom of the placing groove and the first conductive circuit;
the stop block penetrates through the groove wall of the placement groove and is in sealing connection with the groove wall of the placement groove; the stop block is connected with the conductive elastic sheet;
when the batteries are placed in the placing grooves: the conductive elastic sheet can deform under the action of the battery and drive the stop block to open the liquid separation port.
Optionally, the power connection mechanism further comprises a limit card fixed on the storage box and a power connection piece arranged on the limit card;
the conductive elastic sheet comprises an elastic sheet body and a connecting sheet arranged at the end part of the elastic sheet body, the elastic sheet body can be electrically connected with an electrode of the battery facing the bottom of the accommodating groove, the connecting sheet is limited on the preservation box through the limiting clamp, and the connecting sheet is connected with the stop block;
the electric connecting piece is arranged on the limiting card and is used for electrically connecting the connecting piece and the first conductive circuit.
Optionally, the limiting card is an insulating part, the electric part comprises an electric piece arranged in the limiting card and a conductive rod penetrating the limiting card, the electric piece is electrically connected with the conductive rod, and the conductive rod is electrically connected with the first conductive circuit;
the connecting piece is movably arranged in the limiting card in a penetrating way and is in contact with the electric connecting piece; or,
when the stop block closes the liquid distribution port, the stop block movably penetrates through the limiting card; when the check block opens the liquid distribution port, the connecting piece movably penetrates through the limiting card and is in contact with the power connection piece.
Optionally, the power connection mechanism further comprises an elastic pad, and the elastic pad is arranged between one side of the elastic sheet body, which is away from the opening of the mounting groove, and the bottom wall of the mounting groove.
Optionally, the storage box is provided with a first sliding chute, a second sliding chute and a protruding part protruding into the liquid separating port; the first end of the first sliding groove penetrates through the protruding part, and the second end of the first sliding groove penetrates through the placing groove;
the stop block penetrates through the first sliding groove and the second sliding groove and is respectively connected with the groove wall of the first sliding groove and the groove wall of the second sliding groove in a sealing manner; one end of the stop block extending into the placing groove is connected with the conductive elastic sheet, or one end of the conductive elastic sheet extends into the first sliding groove and is connected with the stop block;
the check block is provided with a liquid passing port; when the conductive elastic sheet is in a free state, the protruding part seals two ends of the liquid passing port; when the battery is tightly propped against the conductive elastic sheet, the liquid passing port is exposed out of the protruding part and communicated with the cooling cavity and the cooling pipeline.
Optionally, the bus structure further comprises a first power connection port, a second power connection port and a second conductive circuit, wherein one of the first power connection port and the second power connection port is used for connecting a positive terminal of an external electric appliance, and the other one of the first power connection port and the second power connection port is used for connecting a negative terminal of the external electric appliance;
the first conductive circuit comprises a first bus, a plurality of bus lines and a plurality of branch lines;
the first power connection port is arranged on the storage box and is electrically connected with the first bus, the first bus is electrically connected with all the bus lines, each bus line is connected with a plurality of branch lines, and each branch line is connected with one power connection mechanism;
the second conductive circuit and the second power connection port are arranged on the sealing cover, and the second conductive circuit is used for electrically connecting an electrode of the battery facing the sealing cover and the second power connection port.
Optionally, the cooling pipeline includes a liquid inlet, a liquid outlet, a first total cooling pipe, a second total cooling pipe, a cooling branch and a liquid distribution pipe, which are respectively arranged on the storage box;
the liquid inlet is communicated with the first total cooling pipe, the liquid outlet is communicated with the second total cooling pipe, and two ends of the cooling branch are respectively communicated with the first total cooling pipe and the second total cooling pipe;
each cooling branch is communicated with a plurality of liquid distributing pipes, and the liquid distributing openings are formed in the liquid distributing pipes.
Compared with the prior art, when the batteries are inserted into the accommodating grooves, the liquid separating port is opened by the stop block, so that the batteries are automatically clamped by the clamping and fixing structure under the driving of cooling liquid, the batteries are fixed without glue, the batteries are convenient to install, and the installation efficiency and the fixation reliability of the batteries are improved; in the working process of the power battery pack, the cooling liquid can quickly cool the battery; the sealing cover is opened, the cooling liquid in the power battery pack is pumped out, the battery is not clamped by the clamping structure any more, the battery can be taken out from the storage box, and the battery pack is convenient to disassemble.
Drawings
Fig. 1 is a schematic perspective view of a power battery pack according to an embodiment of the invention;
FIG. 2 is a top view of the power cell pack of FIG. 1 with the cover removed;
fig. 3 is a first schematic sectional view of a power battery pack provided in an embodiment of the invention, in a direction perpendicular to the depth direction of the mounting groove;
fig. 4 is a schematic cross-sectional view of a power battery pack provided in an embodiment of the invention, in a direction perpendicular to the depth direction of the mounting groove;
fig. 5 is a schematic cross-sectional view of a power battery pack provided in an embodiment of the invention, in a direction perpendicular to the depth direction of the mounting groove;
fig. 6 is a first partial cross-sectional view of a power battery pack provided in an embodiment of the invention in the depth direction of a mounting groove;
fig. 7 is a schematic partial sectional view of a power battery pack provided in an embodiment of the invention, in a direction perpendicular to the depth direction of the mounting groove;
FIG. 8 is a schematic perspective view of the fastening structure of FIG. 7;
FIG. 9 is a schematic perspective view of the power connection mechanism and the stopper of FIG. 6;
fig. 10 is a partial cross-sectional view of a power battery pack provided in an embodiment of the invention in the depth direction of the mounting groove;
fig. 11 is a schematic partial cross-sectional view of a power battery pack provided in an embodiment of the invention, in the depth direction of a mounting groove.
The reference numerals in the specification are as follows:
1. a storage box; 11. a placing groove; 12. a cooling chamber; 13. a first opening; 14. a first chute; 15. a second chute; 16. a protrusion;
2. sealing the cover;
31. a power connection mechanism; 311. a conductive spring plate; 3111. a spring plate body; 3112. connecting sheets;
312. a limiting card;
313. connecting a power piece; 3131. connecting a power strip; 3132. a conductive rod;
314. an elastic pad;
321. a first bus; 322. a bus line; 323. a branch line; 324. a conductive joint;
33. a first power connection port; 34. a second power connection port;
4. a clamping structure; 41. a soft rubber sleeve; 42. a retainer; 421. a bayonet section; 422. a clamping section;
51. a liquid inlet; 52. a liquid outlet; 53. a first total cooling pipe; 54. a second main cooling pipe; 55. a cooling branch; 56. a liquid separating pipe;
6. a stopper; 61. a liquid passing port.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 6, the power battery pack according to the embodiment of the present invention includes a storage box 1, a cover 2, a bus structure, a fastening structure 4, a cooling pipeline, and a stopper 6;
the confluence structure is used for converging the electric energy of the battery and connecting an external electric appliance;
the storage box 1 is provided with a plurality of placing grooves 11 and a plurality of cooling cavities 12, the placing grooves 11 are used for accommodating batteries, each placing groove 11 is externally provided with a cooling cavity 12, and the cavity wall of each cooling cavity 12 is provided with at least one first opening 13 penetrating through the corresponding placing groove 11;
the peripheral wall of the first opening 13 is sleeved with a clamping structure 4, and the clamping structure 4 seals the corresponding first opening 13;
the cooling pipeline is provided with a liquid separation port communicated with the cooling cavity 12, and the stop block 6 is movably arranged on the preservation box 1 and can be opened and closed;
when the battery is placed in the placing groove 11:
the baffle 6 can open the liquid separation port under the driving of the battery; the clamping structure 4 can clamp the battery under the driving of the cooling liquid entering the cooling cavity 12 from the liquid separating port.
When the batteries are installed, firstly, cooling liquid (such as water) is introduced into a cooling pipeline, then the batteries are inserted into the placing groove 11, the batteries drive the stop block 6 in the process of inserting the batteries in place, the stop block 6 opens the liquid separation port, the cooling liquid in the cooling pipeline enters the cooling cavity 12, the cooling liquid entering the cooling cavity 12 drives the clamping and fixing structure 4, the clamping and fixing structure 4 keeps the state of clamping the batteries, the batteries are inserted into the placing groove 11 one by one until the installation of the batteries is finished, and the sealing cover 2 is covered, so that the power battery pack is assembled; the cooling liquid in the cooling cavity 12 can cool the battery in the working process of the power battery pack; when the battery needs to be taken down, the sealing cover 2 is opened, the cooling liquid in the power battery pack is pumped out, the two operation steps of opening the sealing cover 2 and pumping out the cooling liquid are not in sequence, the hydraulic action of the cooling liquid on the clamping structure 4 is relieved, the clamping action of the clamping structure 4 on the battery can be relieved, and the battery can be taken out from the storage box 1.
Compared with the prior art, when the battery is inserted into the placing groove 11, the stop block 6 opens the liquid separating port, so that the clamping structure 4 automatically clamps the battery under the driving of the cooling liquid, the battery is fixed, the battery is not required to be fixed by using glue, the battery is convenient to mount, and the mounting efficiency and the fixing reliability of the battery are improved; in the working process of the power battery pack, the cooling liquid can quickly cool the battery; the sealing cover 2 is opened, the cooling liquid in the power battery pack is pumped out, the battery is not clamped by the clamping structure 4 any longer, the battery can be taken out from the storage box 1, and the disassembly is convenient.
In an embodiment, as shown in fig. 6, a plurality of first openings 13 are correspondingly formed on the periphery of each receiving groove 11, and at least part of the first openings 13 are arranged at intervals in the circumferential direction of the receiving groove 11, so that the clamping and fixing structures 4 connected to the circumferential walls of the plurality of first openings 13 cooperate to realize reliable fixing of the battery.
Specifically, the periphery of every mounting groove 11 corresponds there is the first opening group of multiunit, and the first opening group of every group sets up along the groove depth direction interval of mounting groove 11, and the first opening group of every group includes a plurality of first openings 13 that set up along the circumference interval of mounting groove 11, and the cover is equipped with a card solid structure 4 on the perisporium of every first opening 13.
To increase the cooling effect, each receiving groove 11 preferably has a plurality of cooling chambers 12 distributed around its circumference.
In an embodiment, as shown in fig. 6 to 8, the fastening structure 4 includes a soft rubber sleeve 41 and a fastening member 42, the soft rubber sleeve 41 is sleeved on the first opening 13, and the fastening member 42 is fixed on the soft rubber sleeve 41 and used for abutting against the peripheral side of the battery;
the soft rubber sleeve 41 closes the corresponding first opening 13, or the clamping piece 42 and the soft rubber sleeve 41 close the corresponding first opening 13.
The branch liquid mouth is opened to dog 6, the coolant liquid gets into cooling chamber 12, reentrant soft gum cover 41, soft gum cover 41 is bloated, make chucking spare 42 remove towards the battery, and the butt battery, along with the coolant liquid increase in the soft gum cover 41, chucking spare 42 chucking battery, it is fixed to realize the battery, open the closing cap 2, take the coolant liquid in the power battery package out, flexible gum cover 41 loses the support along with taking out of coolant liquid, shrivelled gradually, chucking spare 42 no longer the chucking battery, can follow the battery of taking out of preservation box 1, moreover, the steam generator is simple in structure, make things convenient for the installation and the dismantlement of battery.
Specifically, as shown in fig. 8, the clamping member 42 is located in the receiving groove 11 and comprises a clamping section 422 and a bayonet section 421 connected to one end of the clamping section 422 far away from the bottom of the receiving groove 11, the clamping section 422 is used for clamping the battery, and one side of the bayonet section 421 far away from the cooling cavity 12 is gradually inclined towards the cooling cavity 12 in a direction far away from the bottom of the receiving groove 11; be convenient for the battery stretch to the one side that deviates from cooling chamber 12 of bayonet socket section 421, to the in-process of laying groove 11 and inserting the battery, the battery is like butt bayonet socket section 421, then can promote chucking spare 42 and remove towards the direction of cooling chamber 12 to avoid chucking spare 42 to influence the installation of battery, treat that the battery inserts the back that targets in place, chucking spare 42 chucking battery under the drive of coolant liquid.
In one embodiment, as shown in fig. 6, the bus structure includes a power connection mechanism 31 and a first conductive trace;
the power connection mechanisms 31 are arranged in one-to-one correspondence with the placing grooves 11; the power connection mechanism 31 includes a conductive spring piece 311; the conductive elastic sheet 311 is movably arranged at the bottom of the mounting groove 11 and is used for electrically connecting the electrode of the corresponding battery facing the bottom of the mounting groove 11 and the first conductive circuit;
the stop block 6 is arranged on the groove wall of the mounting groove 11 in a penetrating way and is connected with the groove wall of the mounting groove 11 in a sealing way; the stopper 6 is connected with the conductive elastic sheet 311;
when the battery is placed in the placing groove 11: the conductive elastic sheet 311 can deform under the action of the battery and drives the stopper 6 to open the liquid separation port.
In the process of inserting the battery into the placing groove 11, the battery presses the conductive elastic sheet 311, the conductive elastic sheet 311 deforms, so that the electrode of the battery is ensured to be reliably and electrically connected with the conductive elastic sheet 311, the stop block 6 is driven by the conductive elastic sheet 311 to open the liquid separation port, the cooling liquid in the cooling pipeline enters the cooling cavity 12, the cooling liquid entering the cooling cavity 12 drives the clamping structure 4, and the clamping structure 4 is enabled to keep the state of clamping the battery; before the cooling liquid in the power battery pack is pumped out, the stop block 6 keeps the state of opening the liquid separation port, so that the cooling efficiency of the power battery pack in the working process is ensured; open closing cap 2, take the coolant liquid in the power battery package out, the solid structure 4 of card promptly no longer blocks the battery, electrically conductive shell fragment 311 resumes deformation and jack-up battery, conveniently takes out the battery from preserving box 1, improves the dismantlement efficiency, dog 6 resets to the state of closing branch liquid mouth simultaneously, when preventing to let in the coolant liquid once more, the coolant liquid directly gets into cooling chamber 12 and leads to the solid structure 4 of card to obstruct the battery and pack into mounting groove 11, guarantees that the battery can pack into mounting groove 11 once more.
In one embodiment, as shown in fig. 6 and 9, the power connection mechanism 31 further includes a position limiting card 312 fixed on the storage box 1 and a power connection component 313 arranged on the position limiting card 312;
the conductive elastic sheet 311 comprises an elastic sheet body 3111 and a connecting sheet 3112 arranged at the end of the elastic sheet body 3111, the elastic sheet body 3111 can be electrically connected with the electrode of the battery facing the bottom of the placing groove 11, the connecting sheet 3112 is limited on the storage box 1 through a limiting card 312, and a stop block 6 is connected on the connecting sheet 3112;
the electrical connection part 313 is disposed on the position limiting card 312 and is used for electrically connecting the connection piece 3112 and the first conductive trace.
Specifically, the connection piece 3112 may be electrically connected to the electrical contact members 313 all the time, or may be electrically connected to the electrical contact members 313 only when the battery is mounted in the receiving groove 11.
The connecting sheet 3112 is limited by the limiting card 312, so that the limiting of the conductive elastic sheet 311 is realized, the conductive elastic sheet 311 is prevented from falling off, when the elastic sheet body 3111 deforms under the action of a battery, the connecting sheet 3112 can slide relative to the limiting card 312, the stop block 6 slides along with the connecting sheet 3112, and the liquid distribution port is opened, the clamping structure 4 keeps the state of clamping the battery, and the connecting sheet 3112 is reliably electrically connected with the electric connecting piece 313 due to the limiting action of the limiting card 312; open closing cap 2, take out the coolant liquid in the power battery package, the solid structure 4 of card no longer blocks the battery, and shell fragment body 3111 resumes deformation and jack-up battery, and connection piece 3112 resets along with shell fragment body 3111 slides simultaneously, and dog 6 resets to the state of closing the branch liquid mouth.
Specifically, as shown in fig. 9, the connecting piece 3112 is movably inserted through the position-limiting card 312 and electrically connected to the electrical connection part 313;
or, as shown in fig. 10, when the stopper 6 closes the liquid separation port, the stopper 6 movably penetrates through the position limiting card 312, and when the stopper 6 opens the liquid separation port, the connection piece 3112 penetrates through the position limiting card 312 and is electrically connected with the electric connection part 313; preferably, in the one end embedding dog 6 of connection piece 3112, when the branch liquid mouth is closed to dog 6, the spacing card 312 is worn to locate by the one end of dog 6 parcel outside connection piece 3112, and dog 6 is reliable with being connected of connection piece 3112.
Specifically, the elastic piece body 3111 is a structure that is arched toward the opening of the seating groove 11.
Specifically, as shown in fig. 9, the two ends of the elastic sheet body 3111 are respectively provided with a connecting piece 3112, and each connecting piece 3112 is connected with the first conductive circuit through the electric connecting piece 313. Preferably, every mounting groove 11 corresponds there are two cooling chamber 12, and every cooling chamber 12 corresponds there is a branch liquid mouth, all is connected with dog 6 on the connection piece 3112 at shell fragment body 3111's both ends, can fix the battery more reliably, is favorable to improving battery cooling efficiency.
In one embodiment, as shown in fig. 10, the restriction card 312 is an insulating member, the electrical connecting member 313 includes an electrical connecting plate 3131 disposed inside the restriction card 312 and a conductive rod 3132 penetrating through the restriction card 312, the electrical connecting plate 3131 is electrically connected to the conductive rod 3132, and the conductive rod 3132 is electrically connected to the first conductive trace;
the connecting piece 3112 is movably arranged through the limit card 312 and contacts with the electric connection piece 3131; or,
when the stop 6 closes the liquid separation port, the stop 6 movably penetrates through the limit clamp 312; when the liquid separation port is opened by the stop 6, the connecting piece 3112 is movably inserted into the limiting card 312 and contacts with the electric connecting piece 3131.
Guarantee through spacing card 312 that connection piece 3112 can contact with electricity connection piece 3131, thereby make the electrode of the bottom towards mounting groove 11 of battery, shell fragment body 3111, connection piece 3112, electricity connection piece 3131, conducting rod 3132, first conducting wire is connected electrically in proper order, spacing card 312 is the insulating part, it is used for realizing the connection piece 3112 and the electricity of first conducting wire to connect electricity piece 3131 and conducting rod 3132 in spacing card 312, moreover, the steam generator is simple in structure, conductive material is saved, the electricity is connected reliably, reduce the electric energy loss.
In an embodiment, as shown in fig. 6, connect electric mechanism 31 and still include cushion 314, cushion 314 locates between the one side of shell fragment body 3111 that deviates from the opening of mounting groove 11 and the diapire of mounting groove 11, be favorable to the electrode in close contact with of shell fragment body 3111 and the bottom towards mounting groove 11 of battery, guarantee the reliability of electricity connection, when the no longer chucking battery of card solid structure 4, cushion 314 can also accelerate shell fragment body 3111 and resume deformation, thereby pop out the battery sooner, guarantee that dog 6 resets simultaneously.
Specifically, the elastic pad 314 is a rubber ball pad.
In one embodiment, as shown in fig. 6 and 11, the storage case 1 is provided with a first slide groove 14, a second slide groove 15, and a protrusion 16 protruding into the dispensing opening; the first end of the first sliding chute 14 penetrates through the protruding part 16, and the second end penetrates through the placing groove 11; the stop block 6 penetrates through the first sliding chute 14 and the second sliding chute 15 and is respectively connected with the groove wall of the first sliding chute 14 and the groove wall of the second sliding chute 15 in a sealing manner; one end of the stop block 6 extending into the mounting groove 11 is connected with the conductive elastic sheet 311, or one end of the conductive elastic sheet 311 extends into the first sliding groove 14 and is connected with the stop block 6;
the baffle block 6 is provided with a liquid passing port 61;
when the conductive elastic sheet 311 is in a free state, the protruding part 16 closes two ends of the liquid passing port 61; when the battery is tightly pressed against the conductive elastic sheet 311, the liquid passing port 61 is exposed out of the protruding part 16 and communicated with the cooling cavity 12 and the cooling pipeline; that is, the stopper 6 slides along the first slide groove 14 and the second slide groove 15, and the liquid passing port 61 is opposed to the projection 16 to close the liquid separation port or communicate the cooling line with the cooling chamber 12 to open the liquid separation port.
Simple structure utilizes the cell wall sealing connection dog 6 of first spout 14, can prevent that the coolant liquid from getting into mounting groove 11 from first spout 14, prevent that the coolant liquid from getting into mounting groove 11 and leading to the safety problem, it guarantees that dog 6 can open the branch liquid mouth to set up liquid mouth 61, utilize protruding portion 16 to seal liquid mouth 61, utilize the cell wall sealing connection dog 6 of first spout 14 and second spout 15, guarantee that dog 6 closes the reliability of branch liquid mouth, thereby make things convenient for the installation and the dismantlement of battery.
In one embodiment, as shown in fig. 1, 2 and 4, the bus structure further includes a first contact 33, a second contact 34 and a second conductive trace, one of the first contact 33 and the second contact 34 is used for connecting a positive terminal of an external electrical appliance, and the other is used for connecting a negative terminal of the external electrical appliance;
the first conductive lines include a first bus line 321, a plurality of bus lines 322, and a plurality of branch lines 323;
the first power interface 33 is arranged on the preservation box 1, the first power interface 33 is electrically connected with the first bus 321, the first bus 321 is electrically connected with all the bus lines 322, each bus line 322 is connected with a plurality of branch lines 323, and each branch line 323 is connected with one power connection mechanism 31;
a second conductive trace for electrically connecting the electrode of the battery facing the cap cover 2 and the second contact port 34 and a second contact port 34 are provided on the cap cover 2.
Simple structure can assemble the electric energy of all batteries of power battery package through the structure of converging to connect outside electrical apparatus through first interface 33 and second interface 34, realize for the power supply of outside electrical apparatus, conveniently connect.
Specifically, the second conductive circuit comprises a second bus and conductive sheets, the conductive sheets are arranged in one-to-one correspondence with the mounting grooves 11 and are used for being electrically connected with electrodes of the batteries facing the cover 2, the second bus connects all the conductive sheets to the second power connection port 34, the structure is simple, when the cover 2 is closed, the conductive sheets are in contact with the electrodes of the batteries facing the cover 2, the second conductive circuit is reliably electrically connected with all the batteries, and the power battery pack is convenient to assemble.
Specifically, as shown in fig. 4, each branch 323 is connected to a corresponding bus 322 by a conductive contact 324.
In one embodiment, as shown in fig. 1 and 5, the cooling circuit includes an inlet 51, an outlet 52, a first main cooling pipe 53, a second main cooling pipe 54, a cooling branch 55 and a liquid dividing pipe 56 respectively disposed on the storage box 1;
the liquid inlet 51 is communicated with a first main cooling pipe 53, the liquid outlet 52 is communicated with a second main cooling pipe 54, and two ends of the cooling branch 55 are respectively communicated with the first main cooling pipe 53 and the second main cooling pipe 54;
each cooling branch 55 is connected with a plurality of liquid separating pipes 56, and the liquid separating ports are arranged on the liquid separating pipes 56.
The cooling liquid enters the preservation box 1 from the liquid inlet 51, the cooling liquid is divided into a plurality of cooling branches 55 by the first main cooling pipe 53 in the preservation box 1, each cooling branch 55 is divided into a plurality of liquid dividing pipes 56, the liquid of the liquid dividing pipes 56 enters the cooling cavity 12 when the liquid dividing openings are opened by the stop blocks 6, the cooling liquid of the cooling branches 55 is converged into the second main cooling pipe 54 and then flows out of the preservation box 1 from the liquid outlet 52, the heat of the battery is mainly transferred to the cooling liquid in the liquid dividing pipes by the cooling liquid in the cooling cavity 12, and then the cooling liquid flowing through the first main cooling pipe 53, the cooling branches 55 and the second main cooling pipe 54 is used for heat dissipation, so that the rapid temperature reduction of the battery is realized, and the cooling efficiency is improved.
Specifically, the liquid inlet 51 and the liquid outlet 52 are fixed on the joint of the storage box 1, and are convenient for external cooling liquid circulation structure, and the first total cooling pipe 53, the second total cooling pipe 54, the cooling branch 55 and the liquid distribution pipe 56 are hollow-out pipelines on the storage box 1, and have simple structure, and of course, the first total cooling pipe 53, the second total cooling pipe 54, the cooling branch 55 and the liquid distribution pipe 56 can also be pipelines penetrating through the storage box 1.
In one embodiment, as shown in fig. 3 to 6, the mounting slots 11 are distributed in a matrix, each row of mounting slots 11 corresponds to one bus bar 322, each bus bar 322 is connected with a plurality of branch bars 323, the branch bars 323 correspond to the power connection mechanisms 31 one by one, and the power connection mechanisms 31 correspond to the mounting slots 11 one by one;
a cooling branch 55 is arranged between two adjacent rows of mounting grooves 11, a cooling branch 55 is respectively arranged at the outer sides of two rows of mounting grooves 11 at the outermost side, and the cooling cavities 12 at two sides of each row of mounting grooves 11 are communicated with the cooling branches 55 at two sides thereof through liquid distributing pipes 56. Simple and compact structure and improved cooling efficiency.
Preferably, the bus line 322 and the branch line 323 are located at one height position of the storage case 1, and the cooling branch 55 is located at another height position of the storage case 1, so that the first conductive path is prevented from passing through the cooling line, the first conductive path is prevented from influencing the flow of the cooling liquid in the cooling line, the first conductive path is prevented from contacting the cooling liquid, and the safety is ensured.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims (10)

1. A power battery pack comprises a storage box, a sealing cover and a confluence structure, wherein the confluence structure is used for gathering electric energy of a battery and connecting an external electric appliance;
the storage box is provided with a plurality of placing grooves and a plurality of cooling cavities, the placing grooves are used for accommodating batteries, the cooling cavities are arranged outside each placing groove, and the cavity walls of the cooling cavities are provided with at least one first opening which penetrates through the corresponding placing grooves;
the peripheral wall of the first opening is sleeved with the clamping structure, and the clamping structure seals the corresponding first opening;
the cooling pipeline is provided with a liquid distribution port communicated with the cooling cavity, and the stop block is movably arranged on the preservation box and can be opened and closed;
when the batteries are placed in the placing grooves:
the stop block can open the liquid separation port under the driving of the battery; the clamping structure can clamp the battery under the driving of the cooling liquid entering the cooling cavity from the liquid separation port.
2. The power battery pack according to claim 1, wherein the clamping structure comprises a soft rubber sleeve and a clamping member, the soft rubber sleeve is sleeved on the first opening, and the clamping member is fixed on the soft rubber sleeve and used for abutting against the peripheral side of the battery;
the soft rubber sleeve closes the corresponding first opening, or the clamping piece and the soft rubber sleeve close the corresponding first opening.
3. The power battery pack of claim 1, wherein a plurality of the first openings are correspondingly arranged on the periphery of each accommodating groove, and at least part of the first openings are arranged at intervals in the circumferential direction of the accommodating groove.
4. The power battery pack of claim 1, wherein the bus structure comprises a power connection mechanism and a first conductive trace;
the power connection mechanisms are arranged in one-to-one correspondence with the placing grooves; the power connection mechanism comprises a conductive elastic sheet; the conductive elastic sheet is movably arranged at the bottom of the placing groove and is used for electrically connecting the electrode of the corresponding battery facing the bottom of the placing groove and the first conductive circuit;
the stop block penetrates through the groove wall of the placement groove and is in sealing connection with the groove wall of the placement groove; the stop block is connected with the conductive elastic sheet;
when the batteries are placed in the placing grooves: the conductive elastic sheet can deform under the action of the battery and drives the stop block to open the liquid separation port.
5. The power battery pack as claimed in claim 4, wherein the power connection mechanism further comprises a limit card fixed on the storage box and a power connection piece arranged on the limit card;
the conductive elastic sheet comprises an elastic sheet body and a connecting sheet arranged at the end part of the elastic sheet body, the elastic sheet body can be electrically connected with an electrode of the battery facing the bottom of the accommodating groove, the connecting sheet is limited on the preservation box through the limiting clamp, and the connecting sheet is connected with the stop block;
the electric connecting piece is arranged on the limiting card and is used for electrically connecting the connecting piece and the first conductive circuit.
6. The power battery pack according to claim 5, wherein the limit card is an insulating member, the electric connecting member comprises an electric connecting piece arranged in the limit card and a conductive rod penetrating the limit card, the electric connecting piece is electrically connected with the conductive rod, and the conductive rod is electrically connected with the first conductive circuit;
the connecting piece is movably arranged in the limiting card in a penetrating way and is in contact with the electric connecting piece; or,
when the stop block closes the liquid separation port, the stop block movably penetrates through the limiting card; when the check block opens the liquid distribution port, the connecting piece movably penetrates through the limiting card and is in contact with the power connection piece.
7. The power battery pack according to claim 5, wherein the power connection mechanism further comprises an elastic pad, and the elastic pad is arranged between one side of the elastic sheet body, which is away from the opening of the accommodating groove, and the bottom wall of the accommodating groove.
8. The power battery pack according to claim 4, wherein the storage box is provided with a first chute, a second chute and a protrusion part protruding into the liquid separating port; the first end of the first sliding groove penetrates through the protruding part, and the second end of the first sliding groove penetrates through the placing groove;
the stop block penetrates through the first sliding groove and the second sliding groove and is respectively connected with the groove wall of the first sliding groove and the groove wall of the second sliding groove in a sealing manner; one end of the stop block, which extends into the placing groove, is connected with the conductive elastic sheet, or one end of the conductive elastic sheet extends into the first sliding groove and is connected with the stop block;
the check block is provided with a liquid passing port; when the conductive elastic sheet is in a free state, the protruding part seals two ends of the liquid passing port; when the battery is tightly propped against the conductive elastic sheet, the liquid passing port is exposed out of the protruding part and communicated with the cooling cavity and the cooling pipeline.
9. The power battery pack according to claim 4, wherein the bus structure further comprises a first power port, a second power port and a second conductive trace, one of the first power port and the second power port is used for connecting a positive terminal of an external electrical appliance, and the other is used for connecting a negative terminal of the external electrical appliance;
the first conductive circuit comprises a first bus line, a plurality of bus lines and a plurality of branch lines;
the first power connection port is arranged on the storage box and is electrically connected with the first bus, the first bus is electrically connected with all the bus lines, each bus line is connected with a plurality of branch lines, and each branch line is connected with one power connection mechanism;
the second conductive circuit and the second power connection port are arranged on the sealing cover, and the second conductive circuit is used for electrically connecting an electrode of the battery facing the sealing cover and the second power connection port.
10. The power battery pack as recited in claim 1, wherein the cooling pipeline comprises a liquid inlet, a liquid outlet, a first total cooling pipe, a second total cooling pipe, a cooling branch and a liquid distributing pipe, which are respectively arranged on the storage box;
the liquid inlet is communicated with the first main cooling pipe, the liquid outlet is communicated with the second main cooling pipe, and two ends of the cooling branch are respectively communicated with the first main cooling pipe and the second main cooling pipe;
every the cooling branch road intercommunication is a plurality of divide the liquid pipe, divide the liquid mouth to locate divide on the liquid pipe.
CN202110677008.1A 2021-06-18 2021-06-18 Power battery pack Active CN115224410B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110200856A1 (en) * 2009-07-17 2011-08-18 Shunsuke Yasui Battery module and battery pack using the same
CN107471991A (en) * 2017-08-17 2017-12-15 安吉天剑电器科技有限公司 A kind of batteries of electric automobile sealing and cooling device
CN108608849A (en) * 2018-05-04 2018-10-02 南安富诚阁工业设计有限公司 A kind of clamp device of electric automobile power battery
CN208570734U (en) * 2018-08-07 2019-03-01 德朗能（张家港）动力电池有限公司 A kind of new type superthin formula lithium battery
CN211376696U (en) * 2019-11-22 2020-08-28 张琳 Lithium battery heat radiation structure
CN112331959A (en) * 2020-11-20 2021-02-05 长兴途牛电子科技有限公司 Water cooling system of lithium battery module and installation method
CN112467289A (en) * 2020-11-27 2021-03-09 刘桂兰 Vehicle-mounted lithium battery protection device
JP2021044091A (en) * 2019-09-09 2021-03-18 株式会社ヴァレオジャパン Heat exchange unit for cooling battery

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110200856A1 (en) * 2009-07-17 2011-08-18 Shunsuke Yasui Battery module and battery pack using the same
CN107471991A (en) * 2017-08-17 2017-12-15 安吉天剑电器科技有限公司 A kind of batteries of electric automobile sealing and cooling device
CN108608849A (en) * 2018-05-04 2018-10-02 南安富诚阁工业设计有限公司 A kind of clamp device of electric automobile power battery
CN208570734U (en) * 2018-08-07 2019-03-01 德朗能（张家港）动力电池有限公司 A kind of new type superthin formula lithium battery
JP2021044091A (en) * 2019-09-09 2021-03-18 株式会社ヴァレオジャパン Heat exchange unit for cooling battery
CN211376696U (en) * 2019-11-22 2020-08-28 张琳 Lithium battery heat radiation structure
CN112331959A (en) * 2020-11-20 2021-02-05 长兴途牛电子科技有限公司 Water cooling system of lithium battery module and installation method
CN112467289A (en) * 2020-11-27 2021-03-09 刘桂兰 Vehicle-mounted lithium battery protection device

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