CN219778974U - Battery busbar and battery package - Google Patents
Battery busbar and battery package Download PDFInfo
- Publication number
- CN219778974U CN219778974U CN202320740520.0U CN202320740520U CN219778974U CN 219778974 U CN219778974 U CN 219778974U CN 202320740520 U CN202320740520 U CN 202320740520U CN 219778974 U CN219778974 U CN 219778974U
- Authority
- CN
- China
- Prior art keywords
- liquid cooling
- battery
- bar
- packaging piece
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001816 cooling Methods 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 238000004806 packaging method and process Methods 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims description 22
- 239000000523 sample Substances 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
Abstract
The utility model provides a battery busbar and a battery pack, comprising a packaging piece; at least two conductive bars arranged on one end face of the packaging piece and used for connecting the battery cells in series and parallel; the liquid cooling assembly is arranged in the packaging piece and is used for cooling the conductive bars; the temperature acquisition assembly is arranged in the packaging piece; the temperature acquisition assembly is electrically connected with each conductive bar at the same time, and acquires the temperature of each conductive bar; the packaging piece is used for positioning and mounting the conducting bar, the liquid cooling component and the temperature acquisition component; the temperature acquisition component is used for acquiring the voltage and the temperature of the conductive bars, so that the temperature condition and the voltage condition of each conductive bar can be monitored, whether the temperature change on each conductive bar exceeds a threshold value can be accurately judged, and hysteresis is avoided when the liquid cooling component enhances cooling power.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery busbar and a battery pack.
Background
Currently, the development of batteries faces three mountains of low service life, low safety and slow charging. The use temperature environment is a major influencing factor affecting battery life, safety and charging speed. When the battery is charged and discharged, heat is generated in the battery, and the temperature of the internal environment of the battery is increased due to heat accumulation, so that the service life of the battery is seriously damaged, the safety risk is easily caused, and the charging speed and the charging capacity are greatly influenced; the larger the charge and discharge power is, the more obvious the heat is generated.
The battery pack is characterized in that a plurality of electric cores are connected in series and parallel through a bus bar, so that one main heat conduction part of the battery is the bus bar. Chinese patent CN211350799U discloses a busbar, and in order to avoid heat accumulation and not in time give off, generally set up liquid cooling heat dissipation module on the busbar and dispel the heat to the electric core. The circulation flow rate of the liquid cooling is a main factor affecting the efficiency of liquid cooling heat dissipation. However, under the condition of low working strength of the battery, the liquid cooling is always carried out at a high flow rate, so that the energy consumption of the liquid cooling module is high, and the cost efficiency is low, therefore, a temperature sensing module is usually arranged in the battery pack to monitor the temperature change of the environment in the battery pack; when the internal temperature of the battery pack exceeds a threshold value, the liquid cooling system correspondingly enhances the cooling power.
However, there is a certain difference in the heating power of different cells in the battery pack, and adjacent cells are connected in series and parallel by different conductive bars on the bus bar, so that the temperatures of the different conductive bars are different. The temperature sensing module in the battery pack can only monitor the whole environment temperature in the battery pack in a general way, but can not effectively detect whether the temperature change on each conducting bar exceeds a threshold value, so that the liquid cooling system has certain hysteresis when enhancing the cooling power, and adverse effects are caused on the battery pack.
Disclosure of Invention
In view of this, the present utility model provides a battery busbar and a battery pack for solving the problem that hysteresis is generated when the liquid cooling assembly enhances the cooling power because it is impossible to accurately determine whether the temperature change on each busbar exceeds a threshold value.
The technical scheme of the utility model is realized as follows: the utility model provides a battery busbar, which comprises a packaging piece; at least two conductive bars which are arranged on one end face of the packaging piece and are respectively connected with the battery cells in series and parallel; the liquid cooling assembly is arranged in the packaging piece and is used for cooling the conductive bars; the temperature acquisition assembly is arranged in the packaging piece; the temperature acquisition assembly is electrically connected with each conductive bar at the same time, and acquires the temperature of each conductive bar; the packaging piece is used for positioning and installing the conducting bar, the liquid cooling assembly and the temperature acquisition assembly.
On the basis of the technical scheme, preferably, the temperature acquisition assembly comprises an electrical interface; at least two acquisition connection lines; wherein the electrical interface is disposed outside the package; one end of the collection connecting wire is electrically connected to the conducting bars in a one-to-one correspondence manner, and the other end of the collection connecting wire penetrates through the packaging piece and is electrically connected to the electrical interface.
Still further preferably, the temperature acquisition assembly further comprises a battery management system slave machine electrically connected to the electrical interface, the battery management system slave machine processes the voltage of each acquisition connection line and the temperature of each conductive strip, and converts the acquisition data into data signals to be transmitted to an external BMS host machine.
Still more preferably, the liquid cooling assembly includes a liquid cooling shell disposed within the enclosure; at least two fluid tubes; the liquid cooling shell is internally provided with a flow channel, the side wall of the liquid cooling shell is provided with at least two liquid cooling interfaces, the liquid cooling shell is provided with an inlet and an outlet, one end of the inlet and one end of the outlet are communicated with the flow channel, and the other end of the inlet and the other end of the outlet penetrate through the packaging piece to extend outwards; one end of the fluid pipe extends towards the conducting bar and contacts with the conducting bar, and the other end of the fluid pipe is communicated with the liquid cooling interface.
Still more preferably, the inlet and the outlet are respectively communicated with two ends of the flow channel.
Still further preferably, the end of the collecting connection line is provided with a collecting probe, and the collecting probe is connected to one end of the fluid pipe contacting the conductive bar.
Still more preferably, the fluid pipe is made of an insulating material, and the fluid pipe is connected with the liquid cooling interface in an insulating manner.
On the basis of the technical scheme, preferably, at least two conductive bars are divided into two rows, the two rows of conductive bars are arranged on two axial sides of the packaging piece, and the liquid cooling assembly and the temperature acquisition assembly are arranged between the two rows of conductive bars.
On the basis of the technical scheme, preferably, at least two windows are formed in one section of the packaging piece, each window is communicated to the inside of the packaging piece, and a conductive bar is arranged in each window.
On the other hand, the utility model also provides a battery pack, and the bus bar is adopted.
Compared with the prior art, the battery busbar and the battery pack have the following beneficial effects:
the temperature acquisition component is used for acquiring the voltage and the temperature of the conductive bars, so that the temperature condition and the voltage condition of each conductive bar can be monitored, whether the temperature change on each conductive bar exceeds a threshold value can be accurately judged, and hysteresis generated when the liquid cooling component enhances cooling power is avoided.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a buss bar of the present utility model;
FIG. 2 is a perspective view of a bus bar of the present utility model;
FIG. 3 is a top view of the buss bar of the present utility model;
FIG. 4 is a bottom view of the buss bar of the present utility model;
FIG. 5 is a partial axial cross-section of a buss bar of the present utility model;
FIG. 6 is a radial cross-sectional view of a buss bar of the present utility model;
fig. 7 is an enlarged view of fig. 6 a in accordance with the present utility model.
In the figure: 1. a package; 101. a window; 2. a conductive bar; 3. a liquid cooling assembly; 31. a liquid cooling shell; 32. a fluid pipe; 33. a liquid cooling interface; 301. a flow passage; 302. an inlet; 303. an outlet; 4. a temperature acquisition assembly; 41. an electrical interface; 42. collecting connecting wires; 43. and (5) collecting a probe.
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
Example 1
As shown in fig. 1, a battery busbar of the present utility model includes a package 1, a conductive bar 2, a liquid cooling assembly 3, and a temperature collection assembly 4.
The packaging piece 1 is used for positioning and mounting each conducting bar 2, the liquid cooling component 3 and the temperature acquisition component 4. The package 1 has insulating properties. The packaging piece 1 can realize packaging requirements through PET film hot pressing and plastic integral injection molding, so that a cavity is formed in the packaging piece 1 and is used for installing the conducting bar 2, the liquid cooling component 3 and the temperature acquisition component 4.
At least two conductive bars 2 are arranged on one end face of the packaging piece 1 and are respectively connected with the battery cells in series and parallel, and two ends of each conductive bar 2 are respectively connected with the poles of two adjacent battery cells, so that the two battery cells are connected in series. The conductive bars 2 may be copper bars or aluminum bars. When the battery cell is charged and discharged, heat in the battery cell is conducted to the conductive bar 2 through the pole, so that the conductive bar 2 is one of main components for heat dissipation of the battery cell.
The liquid cooling assembly 3 is disposed in the package 1 and cools each of the conductive bars 2. A bracket can be arranged in the packaging piece 1, a conducting bar 2 is arranged on the bracket, and then a liquid cooling pipe is arranged on the bracket; a liquid cooling plate can be arranged in the packaging piece 1, and a cooling liquid channel is arranged in the plate body, so that the liquid cooling plate is in close contact with the conducting bars 2.
The temperature acquisition assembly 4 is arranged inside the package 1. The temperature acquisition assembly 4 is electrically connected with each conductive bar 2 at the same time. The temperature acquisition component 4 can accurately and timely acquire the real-time temperature of each conductive bar 2 by acquiring the temperature of each conductive bar 2, so that whether the temperature change of each conductive bar 2 exceeds a threshold value or not can be accurately judged; when the temperature change of one of the conductive bars 2 exceeds the threshold value, it indicates that the temperature change of the other conductive bars 2 is also close to the threshold value, and the heat dissipation efficiency of the liquid cooling assembly 3 can be enhanced. It should be noted that, the technology of collecting the ambient temperature or the component temperature by the sensor or the probe belongs to the prior art, and can be realized by the existing circuit design and electrical elements; the purpose of detecting the temperature of each conductive bar 2 is achieved through the existing equipment of the temperature acquisition component 4, and the specific structure of the temperature acquisition component 4 and the principle of detecting the temperature are not improved, so the detection principle is not described in detail.
Example two
On the basis of the first embodiment, in the implementation, as shown in fig. 1, in conjunction with fig. 2, the temperature acquisition assembly 4 includes an electrical interface 41, an acquisition connection line 42, and a battery management system slave.
Wherein the electrical interface 41 is arranged outside the package 1 for easy connection to an external processing system.
One end of each collection connection wire 42 is electrically connected to each conductive bar 2 in a one-to-one correspondence manner, and the other end of each collection connection wire 42 passes through the package 1 and is simultaneously electrically connected to the electrical interface 41. The end of the collection connecting wire 42 is provided with a collection probe 43, and a connecting hole can be formed in the conductive bar 2, so that the collection probe 43 can be conveniently inserted and connected.
The battery management system slave is electrically connected to the electrical interface 41, processes the voltage of each of the collection connection lines 42 and the temperature of each of the conductive bars 2, and converts the collection data into a data signal to be transmitted to an external BMS host. The battery management system slave may be provided on the package member 1, or may be a separate battery management system slave in the battery pack, and finally connected to the BMS host. After the BMS host receives the data signals of the voltage of the acquisition connecting line 42 and the temperature of each conducting bar 2, whether the temperature change of the conducting bar 2 exceeds a threshold value is judged through the temperature signals of the conducting bars 2, and then whether the temperature of the conducting bars 2 can influence the overcurrent condition on the conducting bars 2 is judged through the voltage signals of the acquisition connecting line 42. It should be noted that, the battery management system slave and the BMS host belong to the prior art in the field, and function to manage the overcurrent in the battery.
Example III
In the first embodiment, as shown in fig. 1, in combination with fig. 3, 5, 6 and 7, the liquid cooling module 3 includes a liquid cooling shell 31 and a fluid pipe 32.
Wherein the liquid cooling shell 31 is arranged in the package 1; a flow channel 301 is formed in the liquid cooling shell 31, at least two liquid cooling interfaces 33 are formed in the side wall of the liquid cooling shell 31, an inlet 302 and an outlet 303 are arranged on the liquid cooling shell 31, one end of each of the inlet 302 and the outlet 303 is communicated with the flow channel 301, and the other ends of the inlet 302 and the outlet 303 penetrate through the packaging piece 1 to extend outwards.
One end of the fluid pipe 32 extends towards the conductive bar 2 and contacts the conductive bar 2, and the other end of the fluid pipe 32 is communicated with the liquid cooling interface 33. In order to allow the coolant to flow through the entire flow path 301, the inlet 302 and the outlet 303 are respectively communicated with both ends of the flow path 301. Since the current flows through the conductive bar 2, and the fluid tube 32 contacts the conductive bar 2, and the cooling liquid flows in the fluid tube 32, in order to avoid adverse effects caused by the current flowing through the fluid tube 32, the fluid tube 32 is made of an insulating material, and the fluid tube 32 is connected with the liquid cooling interface 33 in an insulating manner.
Example IV
On the basis of the third embodiment, the acquisition probe 43 is connected to one end of the fluid pipe 32 contacting the conductive bar 2 so that the data signal can be accurately acquired.
Example five
On the basis of the first embodiment, at least two conductive bars 2 are divided into two rows, the two rows of conductive bars 2 are arranged on two axial sides of the packaging piece 1, the liquid cooling component 3 and the temperature acquisition component 4 are arranged between the two rows of conductive bars 2, and the two rows of conductive bars 2 are respectively connected with the positive pole post and the negative pole post of the battery cell.
Example six
On the basis of the first embodiment, as shown in fig. 1, in combination with fig. 4, at least two windows 101 are opened on one of the sections of the package 1, each window 101 is communicated to the inside of the package 1, and a conductive bar 2 is disposed in each window 101.
Example seven
The battery pack of the utility model adopts the bus bar in any one of the first to sixth embodiments.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A battery buss bar, comprising:
a package (1);
at least two conductive bars (2) which are arranged on one end face of the packaging piece (1) and are used for connecting the battery cells in series and parallel;
the liquid cooling assembly (3) is arranged in the packaging piece (1) and is used for carrying out liquid cooling on each conducting bar (2);
the temperature acquisition assembly (4) is arranged in the packaging piece (1);
the temperature acquisition assembly (4) is electrically connected with each conductive bar (2) at the same time, and the temperature acquisition assembly (4) acquires the temperature of each conductive bar (2);
the packaging piece (1) is used for positioning and mounting the conducting bar (2), the liquid cooling component (3) and the temperature acquisition component (4).
2. A battery buss bar as recited in claim 1, wherein: the temperature acquisition assembly (4) comprises,
an electrical interface (41);
at least two acquisition connection lines (42);
wherein the electrical interface (41) is arranged outside the package (1);
one end of each collection connecting wire (42) is electrically connected to the corresponding conductive row (2), and the other end of each collection connecting wire (42) penetrates through the packaging piece (1) and is electrically connected to the electrical interface (41) at the same time.
3. A battery buss bar as recited in claim 2, wherein: the temperature acquisition assembly (4) further comprises a battery management system slave machine, the battery management system slave machine is electrically connected with the electric interface (41), and the battery management system slave machine processes the voltage of each acquisition connecting wire (42) and the temperature of each conducting bar (2) and converts acquired data into data signals to be transmitted to an external BMS host machine.
4. A battery buss bar as recited in claim 2, wherein: the liquid cooling assembly (3) comprises a liquid cooling device,
a liquid cooling shell (31) arranged in the packaging piece (1);
at least two fluid pipes (32);
the liquid cooling shell (31) is internally provided with a flow channel (301), the side wall of the liquid cooling shell (31) is provided with at least two liquid cooling interfaces (33), the liquid cooling shell (31) is provided with an inlet (302) and an outlet (303), one end of the inlet (302) and one end of the outlet (303) are communicated with the flow channel (301), and the other end of the inlet (302) and the other end of the outlet (303) penetrate through the packaging piece (1) to extend outwards;
one end of the fluid pipe (32) extends towards the conducting bar (2) and is in contact with the conducting bar (2), and the other end of the fluid pipe (32) is communicated with the liquid cooling interface (33).
5. A battery buss bar as recited in claim 4, wherein: the inlet (302) and the outlet (303) are respectively communicated with two ends of the flow channel (301).
6. A battery buss bar as recited in claim 4, wherein: the end of the collection connecting line (42) is provided with a collection probe (43), and the collection probe (43) is connected to one end of the fluid pipe (32) contacting the conductive bar (2).
7. A battery buss bar as recited in claim 4, wherein: the fluid pipe (32) is made of an insulating material, and the fluid pipe (32) is connected with the liquid cooling interface (33) in an insulating mode.
8. A battery buss bar as recited in claim 1, wherein: at least two conducting bars (2) are divided into two rows, the two conducting bars (2) are arranged on two axial sides of the packaging piece (1), and the liquid cooling component (3) and the temperature acquisition component (4) are arranged between the two conducting bars (2).
9. A battery buss bar as recited in claim 1, wherein: at least two windows (101) are formed in one section of the packaging piece (1), each window (101) is communicated to the inside of the packaging piece (1), and the conducting bars (2) are arranged in the windows (101).
10. A battery pack, characterized in that: use of a busbar according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320740520.0U CN219778974U (en) | 2023-04-06 | 2023-04-06 | Battery busbar and battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320740520.0U CN219778974U (en) | 2023-04-06 | 2023-04-06 | Battery busbar and battery package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219778974U true CN219778974U (en) | 2023-09-29 |
Family
ID=88135412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320740520.0U Active CN219778974U (en) | 2023-04-06 | 2023-04-06 | Battery busbar and battery package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219778974U (en) |
-
2023
- 2023-04-06 CN CN202320740520.0U patent/CN219778974U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106129527B (en) | A kind of Li-ion batteries piles tab liquid cooling apparatus based on liquid cooling | |
| CN107017670A (en) | A kind of batteries monitoring system and its monitoring method | |
| CN107121629B (en) | Detection device and method for judging failure of power electronic module | |
| CN218385364U (en) | Battery voltage temperature acquisition device and battery module | |
| WO2023071876A1 (en) | Power battery | |
| CN107134548A (en) | A kind of battery bag | |
| WO2024031996A1 (en) | Module of battery cell stacks connected in series by means of tabs | |
| CN207067332U (en) | A kind of detection means for judging electric power electronic module failure | |
| CN217641491U (en) | Battery with built-in information acquisition and wireless transmission | |
| CN206697534U (en) | A kind of battery bag | |
| CN219778974U (en) | Battery busbar and battery package | |
| CN111403647A (en) | Mining explosion-proof lithium ion storage battery power supply adopting intrinsic safety screen operation box | |
| CN108011141A (en) | Aviation battery system | |
| CN113258147A (en) | Intelligent battery | |
| CN208767428U (en) | A kind of temperature acquisition structure of battery modules | |
| CN101908658B (en) | Equalized charging energy block | |
| CN217085220U (en) | A collection system for gathering cylinder power battery module voltage and temperature | |
| CN114156551A (en) | Battery system and control method of battery system | |
| CN212783574U (en) | Battery high-temperature early warning management information system integrated device | |
| CN107230806A (en) | A kind of lithium battery group network temperature measuring system | |
| CN212410766U (en) | Bearing die and insulation and voltage resistance testing device | |
| CN210487109U (en) | Temperature sensing device and temperature sensing subassembly are arranged in water conservancy diversion | |
| CN220753535U (en) | Battery sampling device and battery module | |
| CN206992261U (en) | A kind of lithium battery group network temperature measuring system | |
| CN203481330U (en) | Safety device of lithium battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |