WO2024008195A1 - 电池包及其ccs组件 - Google Patents

电池包及其ccs组件 Download PDF

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Publication number
WO2024008195A1
WO2024008195A1 PCT/CN2023/106623 CN2023106623W WO2024008195A1 WO 2024008195 A1 WO2024008195 A1 WO 2024008195A1 CN 2023106623 W CN2023106623 W CN 2023106623W WO 2024008195 A1 WO2024008195 A1 WO 2024008195A1
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WO
WIPO (PCT)
Prior art keywords
battery core
ccs
negative electrode
positive electrode
battery
Prior art date
Application number
PCT/CN2023/106623
Other languages
English (en)
French (fr)
Inventor
任朝举
张国江
江吉兵
徐宇虹
Original Assignee
湖北亿纬动力有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2024008195A1 publication Critical patent/WO2024008195A1/zh

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Classifications

    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • 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

Definitions

  • the present disclosure relates to the field of battery technology, and in particular, to a CCS (Cells Contact System, integrated busbar) component and a battery pack having the CCS component.
  • CCS Cells Contact System, integrated busbar
  • the battery module is the energy storage unit of the power battery pack.
  • the battery module modularizes multiple cells to facilitate subsequent installation and use.
  • the CCS component in the battery pack plays a vital role in the safety performance of the battery pack.
  • the CCS component in the related art mainly consists of a support plate and a busbar.
  • the problem of misalignment of the busbar may easily occur. If the busbars are misaligned and come into contact with each other, the battery cells may be short-circuited.
  • the present disclosure provides a CCS assembly and a battery pack having the CCS assembly.
  • the bracket of the CCS assembly can realize the positioning of bus bars and cells, effectively preventing short circuits in the battery pack caused by mutual contact of adjacent bus bars.
  • the present disclosure provides a CCS assembly, which is disposed on the top of multiple cells of a battery pack and includes a bracket and a plurality of bus bars; the bus bars are provided with a positive electrode connection part and a negative electrode connection part, and the bus bars
  • the row is configured to electrically connect a plurality of battery cores to form at least one battery core group;
  • the bracket includes an end plate, a first plane of the end plate is provided with a plurality of first mounting positions, and a second plane of the end plate A plurality of second installation positions are provided; each second installation position is provided with a positive electrode communication hole and a negative electrode communication hole, and the positive electrode communication hole and the negative electrode communication hole are insulated and isolated by convex ribs; each second installation position is provided with a positive electrode communication hole and a negative electrode communication hole.
  • the positive electrode of the battery core is electrically connected to one of the positive electrode connecting parts of one of the bus bars through the positive electrode communication hole
  • the negative electrode of the battery core is electrically connected to the other of the bus bars through the negative electrode communication hole.
  • One of the negative electrode connectors of the row is electrically connected.
  • the present disclosure provides a battery pack including the aforementioned CCS component.
  • the CCS assembly provided by the present disclosure and the battery pack having the CCS assembly are provided with multiple bus bars to electrically connect multiple cells.
  • the bracket of the CCS component is provided with a first installation position on the first plane and a second installation position on the second plane, thereby realizing the positioning and installation of the busbar and the battery core.
  • a positive electrode communication hole and a negative electrode communication hole are provided on the bracket.
  • the positive electrode of the battery core can be electrically connected to the positive electrode connection portion of the bus bar through the positive electrode communication hole.
  • the negative electrode of the battery core can be electrically connected to the negative electrode connection portion of another bus bar through the negative electrode communication hole. Electrical connection.
  • FIG. 1 is a schematic structural diagram of the CCS component provided by the present disclosure
  • Figure 2 is a partial structural diagram of position A in Figure 1;
  • Figure 3 is an exploded view of a partial structure of the battery pack provided by the present disclosure.
  • Figure 4 is a schematic assembly diagram of the busbar and sampling circuit board provided by the present disclosure.
  • Battery pack 10. Cell; 101. Positive electrode; 102. Negative electrode; 20. CSS component; 100. Bus bar; 110. Positive electrode connection part; 120. Negative electrode connection part; 130. Base material; 140. First connection 1001. Busbar unit; 200. Bracket; 210. End plate; 2101. First plane; 21010. First installation position; 2102. Second plane; 21020. Second installation position; 2103. Positive electrode connecting hole; 2104. Negative electrode connecting hole; 211. Raised rib; 212. Glue hole; 220. First side plate; 221. Fixed part; 222. Support part; 230. Second side plate; 310. Series row; 320. Positive output row; 330, negative output row; 400, sampling circuit board; 410, nickel sheet; 420, second connection part; 500, liquid cooling plate; 501, liquid inlet; 502, liquid outlet.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
  • first feature "on”, “above” and “above” the second feature include the first feature on the second feature. Directly above and diagonally above, or simply means that the level of the first feature is higher than that of the second feature.
  • “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • connection should be understood in a broad sense.
  • connection or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
  • connection or integral connection
  • connection, or integral connection can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium
  • it can be an internal connection between two components.
  • specific meanings of the above terms in this disclosure can be understood on a case-by-case basis.
  • this embodiment provides a CCS component 20 and a battery pack 1 .
  • the battery pack 1 includes a plurality of battery cells 10 and a CCS assembly 20 disposed on top of the plurality of battery cells 10 .
  • the CCS assembly 20 includes a bracket 200 and a plurality of bus bars 100 provided on the bracket 200 .
  • the plurality of bus bars 100 includes a plurality of positive electrode connecting portions 110 and a plurality of negative electrode connecting portions 120 and is configured to electrically connect the plurality of battery cells 10 to form at least one battery cell group.
  • the bracket 200 includes an end plate 210 having a first flat surface 2101 and a second flat surface 2102 .
  • a plurality of first mounting positions 21010 are provided on the first plane 2101 of the end plate 210 to respectively install a plurality of bus bars;
  • a plurality of second mounting positions 21020 are provided on the second plane 2102 of the end plate 210 to respectively install a plurality of electrical circuits.
  • Each second installation position 21020 is provided with a positive electrode communication hole 2103 and a negative electrode communication hole 2104; the positive electrode communication hole 2103 and the negative electrode communication hole 2104 are insulated and isolated by ridges 211.
  • Each battery core 10 includes a positive electrode 101 and a negative electrode 102 .
  • the positive electrode 101 of each battery cell 10 is electrically connected to one of the positive electrode connecting parts 110 of one of the bus bars 100 through the positive electrode communication hole 2103, and the negative electrode 102 of the battery core 10 is connected to one of the other bus bars 100 through the negative electrode communication hole 2104.
  • One negative electrode connection part 120 is electrically connected.
  • the above-mentioned battery pack and its CCS components realize the electrical connection of multiple battery cells 10 by arranging the bus bar 100; at the same time, by arranging the bracket 200, a first installation position is set on the first plane of the bracket 200, and a second installation position is set on the second plane. installation position, thereby realizing the positioning and installation of the busbar 100 and the battery core 10 .
  • the bracket 200 is provided with a positive electrode communication hole and a negative electrode communication hole.
  • the positive electrode of the battery core 10 can be electrically connected to one of the positive electrode connecting parts 110 of one of the bus bars 100 through the positive electrode communication hole.
  • the negative electrode of the battery core 10 can be electrically connected through the negative electrode communication hole. It is electrically connected to one of the negative electrode connecting portions 120 of another bus bar 100 .
  • the protruding rib 211 is provided between the positive electrode connecting hole and the negative electrode connecting hole, which can provide good insulation for the adjacent bus bars 100 and prevent the positive and negative electrodes of a single battery core 10 from being electrically connected due to contact between the bus bars 100 , causing a short circuit inside the battery pack.
  • the bracket 200 should be made of insulating material.
  • the material of the bracket 200 may be plastic.
  • the outer contour of the bracket 200 in this embodiment is rectangular, with long sides and short sides. In this embodiment, the extending direction of the long side of the bracket 200 is specified as the first direction.
  • each bus bar 100 in this embodiment includes a plurality of bus bar cells 1001 .
  • Two adjacent busbar units 1001 in the same busbar 100 are connected through a base material 130 .
  • the end of each bus bar 100 has a first connecting portion 140 .
  • Each busbar unit 101 includes a positive electrode connection portion 110 and a negative electrode connection portion 120 that are connected to each other.
  • Each busbar unit 101 connects two battery cells 10 in series.
  • multiple busbar cells are connected in a wavy shape through the base material 130 so that the battery cells 10 located below the busbar 100 are disposed in a staggered manner to fully utilize the internal space of the battery pack and ensure that the battery pack has Higher energy density.
  • the CCS assembly also includes a series row 310.
  • the number of battery core groups is multiple, and the multiple battery core groups are connected in series through series rows 310 .
  • the positive electrode of the series-connected battery group is provided with a positive output row 320
  • the negative electrode of the series-connected battery group is provided with a negative output row 330.
  • the bus bar 100 uses a 0.3mm thin copper bar.
  • the series bar 310, the positive output bar 320 and the negative output bar 330 use variable cross-section copper bars, which are welded from 0.3mm and 2mm copper sheets. This can not only meet the overcurrent requirements. , and can save space.
  • the CCS assembly also includes thermal paste (not shown in the figure).
  • Thermal conductive glue is laid on the surface of the bracket 200 and the bus bar 100.
  • the thermal conductive glue is configured to bond the bracket 200 and the bus bar 100 to ensure that their positions do not move relative to each other, which increases the rigidity and stability of the structure; on the other hand, the thermal conductive glue is arranged to bond the bracket 200 and the bus bar 100.
  • the bus bar 100 locally generates serious heat.
  • the thermal conductive adhesive is configured to transfer the heat of the bus bar 100 to a lower temperature part to prevent the local temperature inside the battery pack from being too high, causing thermal runaway of the battery core 10 and other safety hazards.
  • the first mounting position 21010 on the bracket 200 includes a mounting slot (not shown), the bus bar 100 is disposed in the mounting slot, and the mounting hole is disposed on the bottom surface of the mounting slot.
  • the height of the installation groove is greater than the thickness of the bus bar 100, so the thermal conductive glue can fill the surface of the bus bar 100 and cover the bus bar 100 under the thermal conductive glue, which can also improve the heat transfer effect and increase the space between components.
  • the solidity of the connection is greater than the thickness of the bus bar 100, so the thermal conductive glue can fill the surface of the bus bar 100 and cover the bus bar 100 under the thermal conductive glue, which can also improve the heat transfer effect and increase the space between components. The solidity of the connection.
  • the bracket 200 is provided with glue holes 212 .
  • the thermally conductive glue is configured to contact the end surface of the battery core 10 through the glue holes 212 .
  • Thermal conductive glue is filled in the glue holes 212 and is in direct contact with the battery core 10, so that the heat transfer effect of the thermal conductive glue can be fully exerted, the heat of the battery core 10 can be quickly dispersed, and the thermal runaway phenomenon of the battery core 10 can be prevented.
  • a liquid cooling plate 500 is provided above the thermally conductive adhesive.
  • a liquid cooling channel is provided on the liquid cooling plate 500 .
  • a liquid inlet 501 and a liquid outlet 502 are provided on the end surface of the liquid cooling plate 500 . The liquid inlet is led into the coolant, and the coolant flows through the liquid cooling channel and then flows out from the liquid outlet to achieve the cooling effect of the battery pack.
  • the positive electrode communication hole and the negative electrode communication hole above each battery core 10 are arranged along the first direction.
  • the bracket 200 is provided with the glue holes 212 corresponding to the top portion of each battery core 10 .
  • two glue holes 212 are provided above each battery core 10 , and the two glue holes 212 are arranged symmetrically with respect to the first direction.
  • the shape of the glue hole 212 can be set according to the shape of the end surface of the battery core 10 and the bus bar 100 .
  • the two glue holes 212 above a single battery core 10 have the same shape, which can ensure the temperature balance of the end surface of the battery core 10 and prevent local temperature from being too high.
  • the shape of the glue hole 212 may also be circular, square, polygonal, etc., which is not specifically limited here.
  • the area of the glue holes 212 above each battery core 10 is the same, that is to say, the area of direct contact between each battery core 10 and the thermally conductive glue is the same, so that the top of each battery core 10 has the same.
  • the battery pack further includes a plurality of sampling circuit boards 400 .
  • Each cell group is connected to a sampling circuit board 400.
  • the sampling circuit board 400 is electrically connected to the bus bar 100 .
  • the sampling circuit board 400 may be a flexible flat cable.
  • Flexible flat cable is a kind of flexible electronic component, also known as FFC. It is a new type of data made of PET (Polyethylene terephthalate) insulation material and extremely thin tinned flat copper wire, pressed through a high-tech automated equipment production line. Cables. It has the advantages of small size, high density, strong functions, low process difficulty, and can ensure stable quality. The number and spacing of wires can be freely selected to meet various connection needs.
  • the first connection part 140 of the bus bar 100 is connected to the nickel piece 410
  • the sampling circuit board 400 has a second connection part 420
  • the second connection part 420 and the nickel piece 410 are pressed through a terminal.
  • Wire connection is a conductive connection method commonly used in this field, and the model of the terminal can be selected according to the needs of use.
  • the bus bar 100 is electrically connected to the battery core 10
  • the sampling circuit board 400 can be welded to the bus bar 100 by laser welding, so that the sampling circuit board 400 and the bus bar 100 are electrically connected.
  • the sampling circuit board 400 is disposed correspondingly on the side of the battery pack.
  • the sampling circuit board 400 can be prevented from affecting the heat dissipation of the top of the battery cell 10 and the busbar 100 , thereby effectively preventing the thermal runaway of the battery cell 10 caused by excessive internal temperature of the battery pack.
  • the sampling circuit board 400 is disposed on the side of the battery pack, the space occupied in the height direction of the battery pack is reduced.
  • the thermal conductive glue can directly contact the top of the battery core 10, and the heat of the battery core 10 and the bus 100 is directly transferred to the liquid cooling plate 500 through the thermal conductive glue without passing through the sampling circuit board 400. Therefore, the battery pack has good heat dissipation. The effect can effectively reduce the risk of thermal runaway caused by excessive temperature of the battery core 10 .
  • two first side plates 220 are connected to two opposite first edges of the end plate 210 .
  • the first side plate 220 and the end plate 210 are arranged vertically and extend toward the bottom of the battery core 10 .
  • the sampling circuit board 400 is arranged outside the first side plate 220 and is attached to the first side plate 220 .
  • the first edge refers to the long side of the end plate 210, and the sampling circuit board 400 and the end plate 210 are arranged vertically.
  • the arrangement of the first side plate 220 can limit the position of the sampling circuit board 400 to ensure its position on the side of the battery pack.
  • a support portion 222 can be provided on the lower edge of the first side plate 220 to limit the position of the sampling circuit board 400 .
  • the support portion 222 is a rectangular sheet structure extending toward the bottom of the battery core 10 , and its outer side is flush with the outer side of the first side plate 220 .
  • the shape of the supporting portion 222 can be set as needed.
  • the second edge of the end plate 210 (the short side of the end plate 210) is also connected to a connector, and the connector can be electrically connected to the sampling circuit board 400 by plugging, laser welding or terminal crimping. , the connector is used to connect to the battery management system.
  • a second side plate 230 is connected to the second edge, the second side plate 230 is vertically connected to the end plate 210 , and the connector is provided on the second side plate 230 .
  • the battery pack further includes a detection element, the detection element is connected to the first side plate 220 , and the detection element is electrically connected to the sampling circuit board 400 .
  • the detection element may be a temperature sensor or a pressure sensor or other components used for sampling the battery core 10 .
  • a fixing part 221 is connected to the edge of the first side plate 220 , the fixing part 221 extends toward the bottom direction of the battery core 10 , and the detection element is fixed on the fixing part 221 .
  • a plurality of fixing parts 221 are provided, and the plurality of fixing parts 221 are arranged at intervals along the long side of the first side plate 220 .
  • the detection element in this embodiment is a water dropper type temperature sensor, which is connected to the sampling circuit board 400 using terminal crimping. Compared with the welding connection in the prior art, this connection method has the advantages of higher reliability, simpler process, and better economy. The design requirements for a battery temperature acquisition device that can reflect the temperature of the highest temperature area in the entire battery pack are extremely high.
  • the high-temperature areas are located in the upper 1/3 of the battery core from the bottom.
  • the fixing part 221 is used to fix the water dripper temperature sensor in an appropriate position to ensure the accuracy of the collection position, and at the same time, it can also detect the water dripper. temperature sensor for protection.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

公开了一种电池包及其CCS组件。其中，CCS组件包括支架和多个汇流排。汇流排包括正极连接部和负极连接部，设置为将多个电芯进行电连接形成电芯组。支架包括端板，端板的第一平面上设置有多个第一安装位，端板的第二平面上设置有多个第二安装位。每个第二安装位上开设有正极连通孔和负极连通孔，正极连通孔和负极连通孔之间通过凸棱绝缘隔离。电芯的正极通过正极连通孔和其中一个汇流排的其中一个正极连接部电连接，且该电芯的负极通过负极连通孔和另一个汇流排的其中负极连接部电连接。

Description

电池包及其CCS组件
本申请要求在2022年7月8日提交中国专利局、申请号为202210805786.9的中国专利申请的优先权，以上申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及电池技术领域，尤其涉及一种CCS（Cells Contact System，集成母排）组件及具有该CCS组件的电池包。
 背景技术
动力电池具有使用寿命长、安全性能高和容量大等优点，已经成为多种工具的动力来源。电池模组是动力电池包的能量存储单元。电池模组通过将多个电芯进行模组化以方便后续的安装和使用。
电池包中的CCS组件作为电池安全监控中心的核心部分，对电池包的安全性能起着至关重要的作用。相关技术中的CCS组件主要由支撑板和汇流排组成。然而，在支撑板和汇流排的装配过程中，容易出现汇流排错位的问题，而汇流排错位后相互接触会导致电芯短路。
 发明概述
本公开提供一种CCS组件和具有该CCS组件的电池包，该CCS组件的支架能够实现汇流排和电芯的定位，有效防止电池包中因相邻汇流排的相互接触而导致短路。
为达此目的，本公开采用以下技术方案：
第一方面，本公开提供一种CCS组件，设于电池包的多个电芯的顶部，包括支架和多个汇流排；所述汇流排上设置有正极连接部和负极连接部，所述汇流排设置为电连接多个电芯以形成至少一个电芯组；所述支架包括端板，所述端板的第一平面上设置有多个第一安装位，所述端板的第二平面上设置有多个第二安装位；每个所述第二安装位上开设有正极连通孔和负极连通孔，所述正极连通孔和所述负极连通孔之间通过凸棱绝缘隔离；每一所述电芯的正极通过所述正极连通孔和其中一个所述汇流排的其中一个所述正极连接部电连接，且该所述电芯的负极通过所述负极连通孔和另一个所述汇流排的其中一个所述负极连接部电连接。
第二方面，本公开提供一种电池包，包括前述CCS组件。
有益效果
本公开提供的CCS组件和具有该CCS组件的电池包通过设置多个汇流排以电连接多个电芯。该CCS组件的支架的第一平面上设置第一安装位，第二平面上设置第二安装位，从而实现汇流排和电芯的定位安装。支架上开设正极连通孔和负极连通孔，电芯的正极能够通过正极连通孔和汇流排的正极连接部进行电连接，电芯的负极能够通过负极连通孔和另一个汇流排的负极连接部进行电连接。同时，正极连通孔和负极连通孔之间设有凸棱，该凸棱能够对相邻的汇流排起到良好的绝缘作用，防止因汇流排相互接触造成单个电芯的正极和负极电连接，从而致使电池包内部发生短路。
 附图说明
图1是本公开提供的CCS组件的结构示意图；
图2是图1中A处的局部结构示意图；
图3是本公开提供的电池包部分结构的爆炸图；
图4是本公开提供的汇流排和采样电路板的装配示意图。
附图标记说明：
1、电池包；10、电芯；101、正极；102、负极；20、CSS组件；100、汇流排；110、正极连接部；120、负极连接部；130、基材；140、第一连接部；1001、汇流排单体；200、支架；210、端板；2101、第一平面；21010、第一安装位；2102、第二平面；21020、第二安装位；2103、正极连通孔；2104、负极连通孔；211、凸棱；212、过胶孔；220、第一侧板；221、固定部；222、支撑部；230、第二侧板；310、串联排；320、正极输出排；330、负极输出排；400、采样电路板；410、镍片；420、第二连接部；500、液冷板；501、进液口；502、出液口。
 本发明的实施方式
在本公开的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
此外，术语“第一”、“第二”、仅用于描述目的，而不能理解为指示或暗示相对重要性。其中，术语“第一位置”和“第二位置”为两个不同的位置，而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本公开的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本公开中的具体含义。
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。
参见图1至图3，本实施例提供一种CCS组件20和电池包1。电池包1包括多个电芯10和设置在该多个电芯10顶部的CCS组件20。
CCS组件20包括支架200和设于支架200上的多个汇流排100。多个汇流排100包括多个正极连接部110和多个负极连接部120，设置为电连接该多个电芯10以形成至少一个电芯组。
支架200包括具有第一平面2101和第二平面2102的端板210。端板210的第一平面2101上设有多个第一安装位21010以分别安装多个汇流排；端板210的第二平面2102上设置有多个第二安装位21020以分别安装多个电芯10。每个第二安装位21020上开设有正极连通孔2103和负极连通孔2104；正极连通孔2103和负极连通孔2104之间通过凸棱211绝缘隔离。
第一安装位第二安装位第二安装位每一电芯10包括正极101和负极102。每一电芯10的正极101通过正极连通孔2103和其中一个汇流排100的其中一个正极连接部110电连接，且该电芯10的负极102通过负极连通孔2104和另外一个汇流排100的其中一个负极连接部120电连接。
上述电池包及其CCS组件通过设置汇流排100实现多个电芯10的电连接；同时通过设置支架200，在支架200的第一平面上设置第一安装位，在第二平面上设置第二安装位，从而实现汇流排100和电芯10的定位和安装。支架200上开设正极连通孔和负极连通孔，电芯10的正极能够通过正极连通孔和其中一个汇流排100的其中一个正极连接部110进行电连接，该电芯10的负极能够通过负极连通孔和另一个汇流排100的其中一个负极连接部120进行电连接。另外，在正极连通孔和负极连通孔之间设置凸棱211，能够对相邻的汇流排100起到良好的绝缘作用，防止因汇流排100相接触造成单个电芯10的正极和负极电连接，从而致使电池包内部发生短路。
可以理解地，支架200应当采用绝缘材料制成。在一些实施例中，支架200的材质可以为塑胶。本实施例中的支架200的外轮廓呈长方形，具有长边和短边。在本实施例中，规定支架200长边的延伸方向为第一方向。
参见图1和图2，本实施例中的每个汇流排100包括多个汇流排单体1001。同一汇流排100中的相邻两个汇流排单体1001之间通过基材130连接。每个汇流排100的末端具有第一连接部140。每个汇流排单体101包括互相连接的正极连接部110和负极连接部120。每个汇流排单体101串联两个电芯10。在一些实施例中，多个汇流排单体通过基材130呈波浪形连接，以使位于汇流排100下方的电芯10错位设置，以达到充分利用电池包内部空间的目的，保证电池包具有较高的能量密度。
在一些实施例中，该CCS组件还包括串联排310。电芯组的数量为多个，多个电芯组之间通过串联排310实现串联。多个电芯组串联后，串联的电芯组的正极设置有正极输出排320，串联的电芯组的负极设置有负极输出排330。其中汇流排100使用0.3mm的薄铜排，串联排310、正极输出排320和负极输出排330采用变截面铜排，由0.3mm和2mm的铜片焊接而成，这样不仅能够满足过流要求，又能节省空间。
CCS组件还包括导热胶（图中未示出）。导热胶敷设在支架200和汇流排100的表面，一方面，导热胶设置为将支架200和汇流排100进行粘接，保证两者位置不发生相对移动，增加了结构的刚度和稳定性；另一方面，电池在充放电过程中，汇流排100局部发热严重，导热胶设置为将汇流排100的热量传递至温度较低的部位，避免电池包内部局部温度过高，造成电芯10热失控等安全隐患。
继续参见图2，支架200上的第一安装位21010包括安装槽（图未示），汇流排100设置在安装槽内，安装孔设置在安装槽的底面。在一些实施例中，安装槽的高度大于汇流排100的厚度，因此导热胶可以充满汇流排100的表面，将汇流排100覆盖在导热胶之下，同样能够提高热量传递的效果和增加部件间连接的牢固性。
在一些实施例中，支架200上设置有过胶孔212。导热胶设置为通过过胶孔212和电芯10的端面接触。导热胶填充于过胶孔212且直接和电芯10接触，从而能够充分发挥导热胶的传热作用，迅速分散电芯10热量，防止电芯10热失控现象发生。在一些实施例中，导热胶的上方还设置有液冷板500，液冷板500上设置有液冷通道，液冷板500的端面上设置有进液口501和出液口502，通过向进液口通入冷却液，冷却液流经液冷通道后从出液口流出，达到对电池包冷却降温的效果。
在一些实施例中，每个电芯10上方的正极连通孔和负极连通孔均沿第一方向设置。支架200对应每个电芯10的顶部的部分均设置有所述过胶孔212。在本实施例中，每个电芯10上方均设置有两个过胶孔212，两个过胶孔212关于第一方向对称设置。可以理解地，过胶孔212的形状可以根据电芯10端面及汇流排100的形状进行设置。单个电芯10上方的两个过胶孔212形状相同，可以保证电芯10端面的温度均衡，防止局部温度过高。当然，在其他实施例中，过胶孔212的形状也可以为圆形、方形或多边形等，在此不做具体限定。
在一些实施例中，每个电芯10上方的过胶孔212的面积相同，也就是说，每个电芯10和导热胶直接接触的面积均相同，从而每个电芯10顶部具有相同的散热能力，进而保证该电池包内所有的电芯10具有相同的温度，整个电池包内的温度均衡，避免局部电芯10温度过高。
在一些实施例中，参见图2和图3，电池包还包括多个采样电路板400。每个电芯组均连接有采样电路板400。采样电路板400与汇流排100电连接。可选地，采样电路板400可以为柔性扁平电缆。为了节约空间，降低质量及成本，电池包常采用柔性扁平电缆与各个电芯10电连接并进行采样。柔性扁平电缆是一种柔性电子部件，也被称为FFC，是一种用PET（Polyethylene terephthalate）绝缘材料和极薄的镀锡扁平铜线，通过高科技自动化设备生产线压合而成的新型数据线缆。它具有体积小、密度高、功能强、工艺难度低，能够保证质量稳定的优点，并且可以自由选择导线数量和导线间距，满足各种连接需求。
在一些实施例中，参见图2至4，汇流排100的第一连接部140连接有镍片410，采样电路板400具有第二连接部420，第二连接部420与镍片410通过端子压线电连接。其中，端子压线的连接方式为本领域常用的导电连接方式，端子的型号根据使用需要选择即可。由于汇流排100与电芯10电连接，在采样电路板400与汇流排100通过端子压线电连接后，能够通过采样电路板400对电芯10进行采样。在其他实施例中，可以通过激光焊接的方式将采样电路板400焊接至汇流排100上，以使采样电路板400与汇流排100电连接。
在一些实施例中，采样电路板400对应设置在电芯组的侧面。通过将采样电路板400设置在电芯组的侧面，能够避免采样电路板400影响电芯10顶部及汇流排100的散热，从而有效避免电池包内部温度过高造成电芯10热失控的现象发生。另外，由于采样电路板400设置在电芯组的侧面，因而减少占据电池包高度方向上的空间。同时，导热胶能够和电芯10顶部直接接触，电芯10及汇流排100的热量通过导热胶直接传递至液冷板500，而无需经过采样电路板400，因此，该电池包具有良好的散热效果，能够有效降低由电芯10温度过高造成的热失控风险。
在一些实施例中，端板210相对的两个第一边缘连接有第一侧板220。第一侧板220和端板210垂直设置，并朝向电芯10的底部方向延伸。采样电路板400设置在第一侧板220的外侧并与第一侧板220贴合设置。在本实施例中，第一边缘指端板210的长边，采样电路板400和端板210垂直设置。第一侧板220的设置能够对采样电路板400起到限位作用，保证其在电芯组侧面的位置。
在一些实施例中，可以在第一侧板220的下边缘设置支撑部222，对采样电路板400起到限位作用。在本实施例中，支撑部222为向电芯10底部延伸的长方形片状结构，其外侧和第一侧板220的外侧平齐。在其他实施例中，支撑部222的形状根据需要进行设置即可。
在一些实施例中，端板210的第二边缘（端板210的短边）还连接有连接器，连接器可以通过插接、激光焊接或端子压线的方式和采样电路板400进行电连接，连接器用于和电池管理系统连接。
在一些实施例中，第二边缘上连接有第二侧板230，第二侧板230和端板210垂直连接，连接器设置在第二侧板230上。
在一些实施例中，电池包还包括检测元件，检测元件连接在第一侧板220上，检测元件与采样电路板400电连接。检测元件可以为温度传感器或压力传感器或其他用于对电芯10采样的部件。
在一些实施例中，第一侧板220的边缘连接有固定部221，固定部221朝向电芯10的底部方向延伸，检测元件固定在固定部221上。固定部221设置有多个，多个固定部221沿第一侧板220的长边间隔设置。本实施例中的检测元件为水滴头式温度传感器，采用端子压接方式和采样电路板400进行连接。这种连接方式相比现有技术中的焊接连接，具有可靠性更高，工艺更简单，经济性更好的优点。针对要求能够反映整个电芯组中温度最高区域的温度的电池温度采集装置，其设计要求极高。通过仿真结果，高温区域都位于电芯从底部往上1/3位置处，固定部221用于将水滴头式温度传感器固定在合适位置，以保证采集位置的精准度，同时还能够对水滴头式温度传感器进行保护。

Claims (15)

  1. 一种CCS组件（20），设于电池包（1）的多个电芯（10）的顶部，包括：
    多个汇流排（100），设置有正极连接部（110）和负极连接部（120），设置为电连接多个所述电芯（10）以形成至少一个电芯组；以及
    支架（200），包括端板（210），所述端板（210）的第一平面（2101）上设置有多个第一安装位（21010），所述端板（210）的第二平面（2102）上设置有多个第二安装位（21020）；
    其中，每个所述第二安装位（21020）上开设有正极连通孔（2103）和负极连通孔（2104），所述正极连通孔（2103）和所述负极连通孔（2104）之间通过凸棱（211）绝缘隔离；
    每一所述电芯（10）的正极通过所述正极连通孔（2103）和其中一个所述汇流排（100）的其中一个所述正极连接部（110）电连接，且该所述电芯（10）的负极通过所述负极连通孔（2104）和另一个所述汇流排（100）的其中一个所述负极连接部（120）电连接。
  2. 根据权利要求1所述的CCS组件，其中，所述汇流排（100）和所述支架（200）通过导热胶粘接。
  3. 根据权利要求2所述的CCS组件，其中，所述支架（200）上设置有过胶孔（212），所述导热胶通过所述过胶孔（212）和所述电芯（10）的端面接触。
  4. 根据权利要求3所述的CCS组件，其中，每个所述电芯（10）的顶部均设置有所述过胶孔（212），且每个所述电芯（10）顶部的所述过胶孔（212）的面积相同。
  5. 根据权利要求3所述的CCS组件，其中，每个所述电芯（10）上方的所述正极连通孔和所述负极连通孔均沿第一方向设置，每个所述电芯（10）上方均设置有两个所述过胶孔（212），两个所述过胶孔（212）关于所述第一方向对称设置。
  6. 根据权利要求1-5任一项所述的CCS组件，还包括串联排（310），其中，所述电芯组的数量为多个，多个所述电芯组之间通过所述串联排（310）串联。
  7. 根据权利要求6所述的CCS组件，还包括正极输出排（320）和负极输出排（330），其中，所述正极输出排（320）与串联的多个所述电芯组的正极连接，所述负极输出排（330）与串联的多个所述电芯组的负极连接。
  8. 根据权利要求1-5任一项所述的CCS组件，其中，每个所述电芯组均连接有采样电路板（400），所述采样电路板（400）与所述汇流排（100）电连接。
  9. 根据权利要求8所述的CCS组件，其中，所述采样电路板（400）设置在所述电芯组的侧面。
  10. 根据权利要求8所述的CCS组件，其中，所述汇流排（100）具有第一连接部（140），所述第一连接部（140）连接有镍片（410），所述采样电路板（400）具有第二连接部（420），所述第二连接部（420）与所述镍片（410）通过端子压线电连接。
  11. 根据权利要求8所述的CCS组件，其中，所述采样电路板（400）为柔性扁平电缆。
  12. 根据权利要求8所述的CCS组件，其中，所述端板（210）相对的两个第一边缘连接有第一侧板（220），所述第一侧板（220）和所述端板（210）垂直设置，并朝向所述电芯（10）的底部方向延伸，所述采样电路板（400）设置在所述第一侧板（220）的外侧并与所述第一侧板（220）贴合设置。
  13. 根据权利要求12所述的具有CCS组件的电池包，其特征在于，所述第一侧板（220）的边缘连接有固定部（221），所述固定部（221）朝向所述电芯（10）底部的方向延伸，所述固定部（221）设置为固定检测元件。
  14. 一种电池包（1），包括如权利要求1-13任意一项所述的CCS组件（20）。
  15. 根据权利要求13所述的电池包，还包括设于所述CCS组件（20）上的液冷板（500）。
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