WO2020073939A1 - 一种用于电池的温度采样单元、包括其的电池模组、电池包及其制作方法 - Google Patents

一种用于电池的温度采样单元、包括其的电池模组、电池包及其制作方法 Download PDF

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WO2020073939A1
WO2020073939A1 PCT/CN2019/110283 CN2019110283W WO2020073939A1 WO 2020073939 A1 WO2020073939 A1 WO 2020073939A1 CN 2019110283 W CN2019110283 W CN 2019110283W WO 2020073939 A1 WO2020073939 A1 WO 2020073939A1
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Prior art keywords
wire
sampling unit
conductor
temperature sensor
electrical conductor
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English (en)
French (fr)
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曹华源
曹华
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application belongs to the field of batteries, and specifically relates to a temperature sampling unit for a battery, a battery module including the temperature sampling unit, a battery pack, and a method for manufacturing the temperature sampling unit.
  • the temperature in the battery module is an important factor related to the safety of the power battery. Therefore, the temperature in the battery pack needs to be sampled as an important basis for the power battery safety protection strategy, and the reliability of the temperature sensor Becomes particularly important.
  • the conventional battery temperature sampling collects the temperature through the wire harness. Due to the low automation efficiency of the wire harness grouping, it is the key to restrict the battery pack grouping automation.
  • the temperature sensor that collects the temperature through the wire harness, since the wire of the wire harness is directly connected to the chip of the temperature sensor and cannot be isolated from the air, there is a risk of moisture in the air entering the chip along the wire.
  • the temperature sensor chip enters the water, it will cause the resistance value of the chip to drift, and the resistance value becomes smaller. This will cause the temperature sensor to measure inaccurately and fail to accurately reflect the battery temperature, which will invalidate the battery thermal management system and affect the entire battery Use of packages.
  • the purpose of some embodiments of the present application is to provide a temperature sampling unit for a battery, which has accurate temperature measurement and high reliability.
  • a temperature sampling unit including: a housing, and a temperature sensor, a heat conductor, a first electrical conductor, and a second electrical conductor fixed in the housing; the temperature sensor includes a body, and A first wire and a second wire are connected to the body; the first wire is connected to the first electrical conductor, the second wire is connected to the second electrical conductor; and the heat conductor is connected to the body of the temperature sensor.
  • the housing has a first window, a second window, and a third window; the first electrical conductor, the second electrical conductor, and the thermal conductor are respectively disposed in the first A window, a second window, and a third window and the first electrical conductor, the second electrical conductor, and the thermal conductor are at least partially exposed from the housing.
  • the first window and the second window are located on the front of the housing, and the third window is located on the back of the housing.
  • the heat conductor includes a main body portion and an extension portion, and the main body portion and the extension portion form an accommodating groove for accommodating the temperature sensor.
  • the heat conductor has a first wire trough and a second wire trough, the first wire is located in the first wire trough, and the second wire is located in the second wire trough.
  • the first conductor is provided with a first connection slot, the first wire is fixed to the first connection slot; the second conductor is provided with a second In the connection slot, the second wire is fixed in the second connection slot.
  • the temperature sampling unit further includes a clip, and the housing is provided with a connecting through hole, and the clip and the connecting through hole cooperate to fix the temperature sampling unit.
  • two opening grooves are provided on the edge of the housing.
  • the housing fixes the temperature sensor, the heat conductor, the first electrical conductor, and the second electrical conductor by injection molding.
  • the temperature sensor (62) is molded in the housing (61).
  • some embodiments of the present application provide a battery module, including: a plurality of unit batteries, the plurality of unit batteries are stacked and arranged; a temperature sampling unit, the temperature The sampling unit is a temperature collection line according to the above technical solution or any one of the technical solutions, and the collection line is electrically connected to the temperature sampling unit; a connector is connected to the collection line.
  • the collection line is connected to the connector through a connector.
  • the battery module further includes a connecting piece, and the plurality of single cells are connected through the connecting piece.
  • the battery module further includes a clip
  • the connection piece has a mounting hole
  • the temperature sampling unit has a connection through hole
  • one end of the clip passes through the connection through hole and is snapped on the installation The temperature sampling unit is fixed on the connecting piece.
  • an opening groove is provided at an edge of the casing of the temperature sampling unit, and glue is injected into the opening groove to glue the casing and the connection sheet.
  • the battery module further includes a connecting member, and the collecting line and the connector are connected by the connecting member.
  • Some embodiments of the present application provide a battery pack including a housing and a battery module.
  • Some embodiments of the present application provide a mobile device, including the battery module or the battery pack.
  • Some embodiments of the present application provide a method for manufacturing a temperature sampling unit for a battery, including the following steps:
  • the temperature sensor includes a body and first and second wires connected to the body, respectively;
  • the connected temperature sensor, the first electrical conductor, the second electrical conductor, and the thermal conductor are placed in a mold for injection molding to form an integral structure, so that the body of the temperature sensor, the first lead, and The second wires are all encapsulated in a shell formed by injection molding material.
  • the heat conductor is provided with a receiving groove
  • the manufacturing method further includes: placing and fixing the body of the temperature sensor in the receiving groove of the heat conductor.
  • the thermal conductor is provided with a first wire groove, and the first conductor is provided with a first connection groove.
  • the manufacturing method further includes: the first wire of the temperature sensor passes through the The first wire trough is connected to the first connection trough.
  • the heat conductor is provided with a second wire-passing groove, and the second conductor is provided with a second connection groove.
  • the manufacturing method further includes: the second wire of the temperature sensor passes through the The second wire trough is connected to the second connection trough.
  • a temperature sampling unit in some embodiments of the present application because the body of the temperature sensor, the first lead and the second lead are sealed In the housing, the water vapor in the air cannot enter the body of the temperature sensor, so that the resistance drift of the temperature sensor and the decrease of the resistance value can be avoided, thereby ensuring accurate measurement and high reliability of the temperature sensor.
  • FIG. 1 shows a perspective schematic view of a temperature sampling unit installed in a battery module of the present application.
  • FIG. 2 is an exploded view of the battery module shown in FIG. 1.
  • Fig. 3 shows an exploded view of a temperature sampling unit, a connecting piece and a staple of the present application.
  • FIG. 4 shows a top view of a temperature sampling unit of the present application.
  • FIG. 5 shows a top view of a heat conductor, a temperature sensor, a first electrical conductor, and a second electrical conductor installed together.
  • FIG. 6 shows an exploded view of the heat conductor, temperature sensor, first electrical conductor, and second electrical conductor.
  • FIG. 7 is a cross-sectional view taken along C-C in FIG. 4.
  • FIG. 8 shows a bottom view of a temperature sampling unit of the present application.
  • FIG. 10 shows a schematic diagram of a mobile device of the present application.
  • a temperature sampling unit in some embodiments of the present application is installed in a battery module 1.
  • the battery module 1 includes a plurality of unit batteries 11, and each unit battery 11 is connected by a connecting piece 2 Connected in parallel or in series, a connector 5 is also installed in the battery module 1, and the temperature sampling unit 6 is connected to the connector 5 through the acquisition line 3 and the connector 4.
  • the temperature sampling unit 6 has a connecting through hole 614 for fixing the temperature sampling unit 6, a clip 66 is installed in the connecting through hole 614, and a connection for installing the temperature sampling unit 6
  • the chip 2 is provided with a mounting hole 21, and the clip 66 cooperates with the connecting through hole 614 on the temperature sampling unit 6 to fix the temperature sampling unit 6, and the end of the clip 66 is inserted into the mounting hole 21, thereby inserting the temperature sampling unit 6 Fixed on the connecting piece 2.
  • one end of the staple 66 passes through the connection through hole 614 and is engaged in the mounting hole 21.
  • a temperature sampling unit provided by some embodiments of the present application has a housing 61 that encapsulates temperature sensor 62 and other parts together; some embodiments of the present application provide An injection temperature sampling unit further includes: a temperature sensor 62, a thermal conductor 63, a first electrical conductor 64, and a second electrical conductor 65 fixed in the housing 61; the temperature sensor 62 includes a body 621, and a connection A first wire 622 and a second wire 623 of the body 621; the first wire 622 is connected to the first conductor 64, the second wire 623 is connected to the second conductor 65; the heat conductor 63 is connected to the temperature sensor 62 The body 621 is connected.
  • a chip 621 is generally used as the body of the temperature sensor 62, because the chip 621 of the temperature sensor 62, the first wire 622, and the second wire 623 are injection molded in the housing 61 Therefore, the water vapor in the air cannot enter the chip 621 of the temperature sensor 62, so that the drift of the resistance value of the temperature sensor 62 and the decrease of the resistance value can be avoided, thereby ensuring accurate measurement and high reliability of the temperature sensor 62.
  • the temperature sensor 62 is molded in the housing 61, and the first lead 622 and the second lead 623 of the temperature sensor 62 are A conductive body 64 is connected to the second conductive body 65.
  • the first conductive body 64 and the second conductive body 65 need to be able to be connected to the external circuit of the housing 61. For this reason, as shown in FIG.
  • the housing 61 has a first window 611 and a second window 612, the first electrical conductor 64 and the second electrical conductor 65 are provided on the first window 611 and the second window 612, respectively, and At least part of the one electric conductor 64 and at least part of the second electric conductor 65 are exposed to the casing 61, so that the external circuit can be connected to the first electric conductor 64 and the second electric conductor 65.
  • a bunch of collection wires 3 are connected to the first electrical conductor 64 and the second electrical conductor 65 respectively, and the collection wires 3 are connected to the connector 5 through the connecting member 4.
  • the heat conductor 63 is used to transfer the heat of the single cell 11 in the battery module 1 to the temperature sensor 62. Therefore, the heat conductor 63 needs to be able to be connected to the outside of the housing 61 The sheet 2 is in contact. For this reason, as shown in FIG. 8, the housing 61 further has a third window 613; the heat conductor 63 is disposed in the third window 613, and the bottom 636 of the heat conductor 63 is exposed from the housing 61. Can be in contact with the connecting piece 2. In this way, the heat of the unit battery 11 is transferred to the temperature sensor 62 through the connection sheet 2 and the heat conductor 63 in this order.
  • the front side of the housing 61 faces upward, in order to facilitate the connection between the first conductor 64 and the second conductor 65 of the temperature sampling unit 6 and the collection line 3 ;
  • the back of the housing 61 is closely attached to the connecting piece 2.
  • the first window 611 and the second window 612 are located on the front of the housing 61, so that the first electrical conductor 64 and the second electrical conductor 65 are exposed on the front of the housing 61, which can be easily collected Line 3 is connected.
  • the third window 613 is located on the back of the housing 61, so that the bottom 636 of the heat conductor 63 is exposed on the back of the housing 61, and can easily contact the connecting piece 2 to transfer heat.
  • the heat conductor 63 is used to transfer the heat on the connection sheet 2 to the temperature sensor 62, and the chip 621 of the temperature sensor 62 needs to be in good contact with the heat conductor 63, the temperature sensor 62 can detect the temperature of the heat conductor 63, and a thermistor can be used as the body of the temperature sensor 62.
  • the thermal conductor 63 is made of aluminum metal sheet, has good thermal conductivity, high thermal conductivity, and fast response time. As shown in FIGS. 5 and 6, the heat conductor 63 includes a body portion 631 and an extension portion 632.
  • a receiving groove 633 is formed between the body portion 631 and the extending portion 632, and the temperature sensor 62 is disposed in the receiving groove 633.
  • the chip 621 of the temperature sensor 62 is positioned in the receiving groove 633, and after the injection molding, the chip 621 of the temperature sensor 62 can make good contact with the heat conductor 63. As shown in FIGS.
  • the heat conductor 63 further has a first wire-passing groove 634 and a second wire-passing groove 635, the first wire 622 is located in the first wire-passing groove 634, and the second wire 623 is located in the second wire-passing In the groove 635, the first wire 622 passes through the first wire-passing groove 634 and is connected to the first conductor 64, and the second wire 623 passes through the second wire-passing groove 635 and is connected to the second conductor 65.
  • the first conductor 64 is provided with a first connection groove 641, and the first wire 622 is fixed to the first connection In the slot 641; the second conductor 65 is provided with a second connection slot 651, and the second wire 623 is fixed in the second connection slot 651.
  • Both the first electrical conductor 64 and the second electrical conductor 65 are made of good conductor materials, for example, the first electrical conductor 64 and the second electrical conductor 65 are both made of aluminum metal sheet, and the first electrical conductor 64 and the second electrical conductor 65 is symmetrically arranged on both sides of the heat conductor 63.
  • an integral injection temperature sampling unit as another embodiment, the housing 61 fixes the temperature sensor 62, the heat conductor 63, the first electrical conductor 64, and the The second electrical conductor 65 is formed by injection molding the temperature sensor 62, the first electrical conductor 64, the second electrical conductor 65, and the thermal conductor 63 to form an integral structure. Please refer to FIG. 5 and FIG. 6.
  • the injection molding into the mold forms an integral structure, in which the injection molding material is formed into the housing 61.
  • the injection molding material is in particular plastic.
  • the first conductor 64 and the second conductor 65 are provided on the first window 611 and the second window 612, respectively, and at least part of the first conductor 64 and at least part of the second conductor 65 are exposed outside the housing 61. At least a portion of the bottom portion 636 of the heat conducting body located in the third window 613 is exposed outside the housing 61 and can directly contact the connecting plate 2 to conduct heat. In this way, the chip 621 of the temperature sensor 62 is sealed in the housing 61, and the first wire 622 and the second wire 623 directly connected to the chip 621 are also sealed in the housing 61, so moisture in the air does not enter Into the chip 621.
  • a connecting through hole 614 is provided in the middle of the housing 61.
  • the connecting through hole 614 is square, and the connecting through hole 614 is used to install the staple 66 (see Figure 3), the temperature sampling unit 6 can be installed on the connecting piece 2 through the staple 66; the edge of the casing 61 is provided with two opening grooves 615, which is used for connecting the casing 61 of the temperature sampling unit 6 with the connecting piece 2 After the staple 66 is connected, glue is injected into the opening groove 615 to glue the housing 61 and the connecting piece 2 together, which will be more secure.
  • some embodiments of the present application further provide a battery module 1 including a plurality of unit batteries 11 that are stacked and arranged; a temperature sampling unit 6 that The sampling unit 6 is the temperature sampling unit 6 described in the above technical solution or any one of the technical solutions; please refer to FIGS. 1 and 2, the battery module 1 further includes a collection line 3 and a connector 5, the collection line 3 is electrically connected to the temperature sampling unit 6; a connector 5 is connected to the collection line 3.
  • the collection line 3 and the connector 5 are connected by a connecting piece 4.
  • the connector 4 can be FPC, wire harness, PCB, etc.
  • the connector 4 can be linear or plate-like structure, as shown in Figures 1 and 2, the connector 4 is a plate-like structure; the connector 4 can be directly sampled with temperature
  • the unit 6 is electrically connected, and may also be electrically connected through an intermediate conductive connecting member 4 or a connecting piece 2.
  • the battery pack 7 includes an upper case 71, a lower case 72 and a battery module 1.
  • the battery module 1 is provided on the top The space formed by the housing 71 and the lower housing 72.
  • the battery module 1 is fixed in the lower case 72 by glue or bolt fixing and the like, and then, the upper case 71 is covered with the lower case 72, and the upper case 71 and the lower case 72 are bolted Connect.
  • Motorized equipment includes a power source that provides a driving force for the motorized device.
  • the power source may be all electrical energy, and may also include electrical energy and other energy sources (such as mechanical energy). Therefore, the power source may be a battery module (or battery pack) and / or a generator. Any mobile device that can use a single battery as a power source is within the scope of protection of this application. As shown in FIG. 10, some embodiments of the present application provide a mobile device 8, such as an automobile, including a housing 81 of the mobile device 8, and a battery module 1 or a battery pack 7 disposed in the housing 81.
  • a temperature sampling unit of some embodiments of the present application since the chip of the temperature sensor, the first wire and the second wire are injection molded into the housing, the moisture in the air cannot enter the temperature sensor In the chip, this can avoid the phenomenon that the temperature sensor drifts in resistance and becomes smaller, thereby ensuring that the temperature sensor measures accurately and has high reliability.
  • a battery module of some embodiments of the present application also has the above-mentioned beneficial effects, which will not be repeated here.

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Abstract

一种用于电池的温度采样单元(6)，包括：壳体(61)，以及固定于所述壳体(61)内的温度传感器(62)、导热体(63)、第一导电体(64)和第二导电体(65)；所述温度传感器(62)包括本体(621)，以及连接所述本体(621)的第一导线(622)和第二导线(623)；所述第一导线(622)与所述第一导电体(64)连接，所述第二导线(623)与所述第二导电体(65)连接；所述导热体(63)与所述温度传感器(62)的本体(621)连接。

Description

一种用于电池的温度采样单元、包括其的电池模组、电池包及其制作方法
交叉引用
本申请要求于2018年10月11日递交的名称为“一种电池模组及温度采样单元”的第201821647856.8号中国专利申请的优先权，其通过引用被全部并入本申请。
技术领域
本申请属于电池领域，具体涉及用于电池的温度采样单元、包括该温度采样单元的电池模组、电池包以及该温度采样单元的制作方法。
背景技术
在动力电池中，电池模组内的温度是关系着动力电池工作安全的一项重要因素，因此，需要采样电池包内的温度以作为动力电池安全保护策略的重要依据，而温度传感器的可靠性变得尤为重要。
发明内容
发明人在发明创造过程中发现：常规电池温度采样通过线束采集温度，由于线束成组的自动化效率低，是制约电池包成组自动化的关键。在通过线束采集温度的温度传感器中，由于线束的导线和温度传感器的芯片的直接相连且 不能与空气隔绝，这就存在空气中的水汽沿着导线进入芯片的风险。当温度传感器的芯片进水时就会导致芯片的阻值漂移，阻值变小，这就会导致温度传感器测量不准确，不能真实的反应电池的温度，使电池热管理系统失效，影响整个电池包的使用。
为此，本申请部分实施例的目的在于提供一种用于电池的温度采样单元，测温准确，可靠性高。
本申请的一些实施例提供一种温度采样单元，包括：壳体，以及固定于所述壳体内的温度传感器、导热体、第一导电体和第二导电体；所述温度传感器包括本体，以及连接本体的第一导线和第二导线；所述第一导线与第一导电体连接，第二导线与第二导电体连接；所述导热体与所述温度传感器的本体连接。
作为另外一种实施方式，在温度采样单元中，所述壳体具有第一窗口、第二窗口和第三窗口；所述第一导电体、第二导电体和导热体分别设置在所述第一窗口、第二窗口和第三窗口上并且所述第一导电体、第二导电体和导热体至少部分露出于所述壳体。
另外，在温度采样单元中，所述第一窗口和第二窗口位于所述壳体的正面，所述第三窗口位于壳体的背面。
作为另外一种实施方式，在温度采样单元中，所述导热体包括主体部和延伸部，所述主体部和延伸部形成用于容纳所述温度传感器的容纳槽。
另外，在温度采样单元中，所述导热体具有第一过线槽和第二过线槽，第一导线位于第一过线槽中，第二导线位于第二过线槽中。
作为另外一种实施方式，在温度采样单元中，所述第一导电体上设有第 一连接槽，所述第一导线固定于第一连接槽；所述第二导电体上设有第二连接槽，所述第二导线固定在第二连接槽中。
作为另外一种实施方式，温度采样单元还包括卡钉，所述壳体上设有连接通孔，所述卡钉与所述连接通孔配合用于固定所述温度采样单元。
作为另外一种实施方式，在温度采样单元中，所述壳体的边缘设有两个开口槽。
作为另外一种的实施方式，在温度采样单元中，所述壳体通过注塑成型方式固定所述温度传感器、导热体、第一导电体和第二导电体。
另外，在温度采样单元中，所述温度传感器(62)被塑封在所述壳体(61)内。
与本申请的一种温度采样单元相应地，本申请部分实施例提供了一种电池模组，包括：多个单体电池，所述多个单体电池堆叠设置；温度采样单元，所述温度采样单元为根据上述技术方案或其任一技术方案所述的温采集线，所述采集线与所述温度采样单元电连接；连接器，与所述采集线相连。
作为另外一种实施方式，在电池模组中，所述采集线通过连接件连接在连接器上。
另外，所述电池模组还包括连接片，所述多个单体电池之间通过所述连接片连接。
另外，所述电池模组还包括卡钉，所述连接片具有安装孔，所述温度采样单元具有连接通孔，所述卡钉的一端穿过所述连接通孔并卡合在所述安装孔中，从而将所温度采样单元固定在所述连接片上。
另外，在电池模组中，所述温度采样单元的壳体的边缘处设有开口槽， 在所述开口槽处注入胶水而将所述壳体与所述连接片胶粘。
另外，电池模组还包括连接件，所述采集线和所述连接器之间通过所述连接件连接。
本申请一些实施例提供了一种电池包，包括壳体和电池模组。
本申请一些实施例提供了一种机动设备，包括所述电池模组或所述电池包。
本申请一些实施例提供了一种用于电池的温度采样单元的制作方法，包括以下步骤：
提供温度传感器，导热体，第一导电体，第二导电体，所述温度传感器包括本体以及与分别与所述本体相连的第一导线和第二导线；
将所述温度传感器的本体放置在所述导热体上并固定；
将所述温度传感器的第一导线和第二导线分别连接到在所述第一导电体和所述第二导电体上；
将连接好的所述温度传感器、所述第一导电体、所述第二导电体和所述导热体放置到模具中进行注塑形成一个整体结构，使得所述温度传感器的本体、第一导线和第二导线均被包塑在注塑材料形成的壳体中。
在一些实施例中，所述导热体设有容纳槽，所述制作方法还包括：将所述温度传感器的本体放置在所述导热体的容纳槽中并固定。
在一些实施例中，所述导热体设有第一过线槽，所述第一导电体上设有第一连接槽，所述制作方法还包括：所述温度传感器的第一导线穿过所述第一过线槽并连接到所述第一连接槽。
在一些实施例中，所述导热体设有第二过线槽，所述第二导电体上设有 第二连接槽，所述制作方法还包括：所述温度传感器的第二导线穿过所述第二过线槽并连接到所述第二连接槽。
如上所述，本申请部分实施例现对于现有技术而言，具有以下有益效果：本申请部分实施例中的一种温度采样单元，由于温度传感器的本体、第一导线和第二导线被密封在壳体内，所以空气中的水汽不能进入到温度传感器的本体中，这样就能够避免温度传感器发生阻值漂移、阻值变小的现象，从而能够保证温度传感器测量准确，可靠性高。
附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1显示为本申请的一种温度采样单元安装于电池模组中的立体示意图。
图2显示为图1中所示的电池模组的爆炸视图。
图3显示为本申请的一种温度采样单元、连接片与卡钉的爆炸视图。
图4显示为本申请的一种温度采样单元的俯视图。
图5显示为导热体、温度传感器、第一导电体和第二导电体安装在一起的俯视图。
图6显示为导热体、温度传感器、第一导电体和第二导电体的爆炸视图。
图7显示为沿图4中C-C剖切的剖面视图。
图8显示为本申请的一种温度采样单元的仰视图。
图9显示为本申请的一种电池包的爆炸视图。
图10显示为本申请的一种机动设备的示意图。
元件标号说明
1 电池模组
11 单体电池
2 连接片
21 安装孔
3 采集线
4 连接件
5 连接器
6 温度采样单元
61 壳体
611 第一窗口
612 第二窗口
613 第三窗口
614 连接通孔
615 开口槽
62 温度传感器
621 本体/芯片
622 第一导线
623 第二导线
63 导热体
631 主体部
632 延伸部
633 容纳槽
634 第一过线槽
635 第二过线槽
636 底部
64 第一导电体
641 第一连接槽
65 第二导电体
651 第二连接槽
66 卡钉
7 电池包
71 上壳体
72 下壳体
8 机动设备
81 机动设备的壳体
具体实施例
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请部分实施例进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
以下由特定的具体实施例说明本申请的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本申请的其他优点及功效。
须知，本说明书所附图式所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本申请可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本申请所能产生的功效及所能达成的目的下，均应仍落在本申请所揭示的技术内容得能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本申请可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本申请可实施的范畴。
如图1所示，本申请一些实施例中的一种温度采样单元安装于电池模组1中，电池模组1中包含有多个单体电池11，各单体电池11之间通过连接片2并联或者串联连接，电池模组1中还安装有连接器5，温度采样单元6通过采集线3和连接件4连接在连接器5上。如图2和图3所示，温度采样单元6具有用于固定所述温度采样单元6的连接通孔614，连接通孔614中安装有卡钉66，在用于安装温度采样单元6的连接片2上设有安装孔21，卡钉66与温度采样单元6上的连接通孔614配合以固定温度采样单元6，卡钉66的端部插在安装孔21中，从而将温度采样单元6固定在连接片2上。换言之，卡钉66的一端穿过连接通孔614并卡合在安装孔21中。
如图4、图5和图6所示，本申请的一些实施例提供的一种温度采样单元具有壳体61，壳体61将温度传感器62等零件封装在一起；本申请部分实施例提供的一种注塑式温度采样单元还包括：固定于所述壳体61内的温度传感器62、导热体63、第一导电体64和第二导电体65；所述温度传感器62包括本体621，以及连接本体621的第一导线622和第二导线623；所述第一导线622与 第一导电体64连接，第二导线623与第二导电体65连接；所述导热体63与所述温度传感器62的本体621连接。
在本申请的一些实施例的一种温度采样单元中，一般采用芯片621作为温度传感器62的本体，由于温度传感器62的芯片621、第一导线622和第二导线623被注塑在壳体61内，所以空气中的水汽不能进入到温度传感器62的芯片621中，这样就能够避免温度传感器62发生阻值漂移、阻值变小的现象，从而能够保证温度传感器62测量准确，可靠性高。
在本申请一些实施例的一种温度采样单元中，如图5至图7所示，温度传感器62被塑封在壳体61内，温度传感器62的第一导线622和第二导线623分别与第一导电体64和第二导电体65连接，为了采集温度传感器62所检测的温度信号，第一导电体64和第二导电体65需要能够与壳体61外部电路连接，为此，如图4所示，所述壳体61上具有第一窗口611和第二窗口612，所述第一导电体64和第二导电体65分别设置在所述第一窗口611和第二窗口612上并且第一导电体64至少部分和第二导电体65的至少部分露出于所述壳体61，这样，可以将外部电路与第一导电体64、第二导电体65相连。如图1和图2所示，第一导电体64和第二导电体65上分别连接有一束采集线3，采集线3与连接器5通过连接件4连接。在本申请的一种温度采样单元中，所述导热体63用于将电池模组1中单体电池11的热量传递给温度传感器62，因此，导热体63需要能够与壳体61外部的连接片2接触，为此，如图8所示，所述壳体61上还具有第三窗口613；所述导热体63设置在第三窗口613，导热体63的底部636露出于壳体61而能够与连接片2接触。这样，单体电池11的热量依次通过连接片2、导热体63传递给温度传感器62。
在一些实施例中，在将温度采样单元安装到电池模组1中之后，壳体61的正面朝上，为了便于温度采样单元6的第一导电体64和第二导电体65连接采集线3；壳体61的背面与连接片2贴紧。如图4所示，所述第一窗口611和第二窗口612位于壳体61的正面，这样，第一导电体64、第二导电体65露出于壳体61的正面，能够方便地和采集线3连接。而第三窗口613位于壳体61的背面，这样，导热体63的底部636露出于壳体61的背面，能够方便地和连接片2接触而传递热量。
在本申请部分实施例的一种温度采样单元中，所述导热体63用于将连接片2上的热量传递给温度传感器62，温度传感器62的芯片621需要与导热体63良好接触，温度传感器62能够检测导热体63的温度，可以采用热敏电阻作为所述温度传感器62的本体。所述导热体63由铝金属片制成，具有良好的导热性，导热效率高，响应时间快。如图5和图6所示，导热体63包括主体部631和延伸部632，主体部631和延伸部632之间形成一容纳槽633，所述温度传感器62设置在容纳槽633中。这样，温度传感器62的芯片621被定位在所述容纳槽633中，注塑成型之后，温度传感器62的芯片621能够与导热体63良好接触。如图5和图6所示，导热体63还具有第一过线槽634和第二过线槽635，第一导线622位于第一过线槽634中，第二导线623位于第二过线槽635中，这样，第一导线622穿过第一过线槽634而与第一导电体64连接，第二导线623穿过第二过线槽635而与第二导电体65连接。为了便于第一导线622和第二导线623的接线，如图5和图6所示，所述第一导电体64上设有第一连接槽641，所述第一导线622固定在第一连接槽641中；所述第二导电体65上设有第二连接槽651，所述第二导线623固定在第二连接槽651中。第一导电 体64和第二导电体65均有良导体材料制成，例如，第一导电体64和第二导电体65均由铝金属片制成，第一导电体64和第二导电体65对称地设置在导热体63两侧。
在本申请一些实施例中，一种整体注塑式温度采样单元，作为另外一种实施方式，所述壳体61通过注塑成型方式固定所述温度传感器62、导热体63、第一导电体64和第二导电体65，利用注塑工艺而将温度传感器62、第一导电体64、第二导电体65和导热体63注塑在一起而形成一个整体结构，在进行注塑之前，请参考图5和图6，先将温度传感器62的芯片621放置在导热体63的容纳槽633中并用胶水固定，然后将温度传感器62的第一导线622穿过第一过线槽634并焊接在第一连接槽641中，将温度传感器62的第二导线623穿过第二过线槽635并焊接在第二连接槽651中，将温度传感器62、第一导电体64、第二导电体65和导热体63放置到模具中进行注塑形成一个整体结构，其中，注塑材料形成为壳体61。注塑材料特别地为塑料。第一导电体64和第二导电体65的分别设置在第一窗口611和第二窗口612上并且第一导电体64的至少部分和第二导电体65的至少部分露出于壳体61外。位于第三窗口613的导热体的底部636的至少部分露出于在壳体61外，可以与连接片2直接接触导热。这样，温度传感器62的芯片621就被密封在壳体61内，与芯片621直接连接的第一导线622和第二导线623也被密封在壳体61中，所以，空气中的水分不会进入到芯片621中。
为了便于温度采样单元6的安装，如图4或图8所示，壳体61的中部设有连接通孔614，连接通孔614呈方形，该连接通孔614用于安装卡钉66(见图3)，通过卡钉66可以将温度采样单元6安装到连接片2上；所述壳体61 的边缘设有两个开口槽615，将温度采样单元6的壳体61与连接片2用卡钉66连接之后，在开口槽615处注入胶水而将壳体61与连接片2胶粘在一起，这样会更牢固。
与一种温度采样单元相应地，本申请一些实施例还提供一种电池模组1，包括多个单体电池11，所述多个单体电池11堆叠设置；温度采样单元6，所述温度采样单元6为上述技术方案或其任一项的技术方案所述的温度采样单元6；请参考图1和图2，电池模组1还包括，采集线3和连接器5，所述采集线3与所述温度采样单元6电连接；连接器5与所述采集线3相连。所述采集线3和连接器5之间通过连接件4连接。连接件4可以为FPC、线束、PCB等，连接件4可以为线状或是板状结构，如图1和图2所示，连接件4为板状结构；连接件4可以直接与温度采样单元6电连接、也可以通过中间导电的连接件4或连接片2电连接。
相应地，本申请的部分实施例提供了一种电池包7，如图9所示，电池包7包括上壳体71，下壳体72和电池模组1，电池模组1设置在由上壳体71和下壳体72所形成的空间中。首先，电池模组1通过胶粘或螺栓固定等类似的方式固定于下壳体72中，然后，上壳体71盖合到下壳体72上，上壳体71和下壳体72通过螺栓进行连接。
机动设备(例如车辆、船舶、小型飞机等)包括动力源，该动力源为机动装置提供驱动力。该动力源可以全部为电能，也可包括电能和其他能源(例如机械能)。所以，该动力源可以为电池模组(或电池包)和/或发电机等。只要能够使用单体电池作为电源的机动设备均在本申请的保护范围内。如图10所示，本申请的一些实施例提供了一种机动设备8，比如汽车，包括机动设备8 的壳体81，以及设置在壳体81内的电池模组1或电池包7。
基于上述实施例的技术方案，本申请部分实施例的一种温度采样单元，由于温度传感器的芯片、第一导线和第二导线被注塑在壳体内，所以空气中的水汽不能进入到温度传感器的芯片中，这样就能够避免温度传感器发生阻值漂移、阻值变小的现象，从而能够保证温度传感器测量准确，可靠性高。本申请部分实施例的一种电池模组当然也具有上述有益效果，此处不再赘述。
综上所述，本申请有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本申请的原理及其功效，而非用于限制本申请。任何熟悉此技术的人士皆可在不违背本申请的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本申请所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本申请的权利要求所涵盖。
本领域的普通技术人员可以理解，上述各实施例是实现本申请的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本申请的精神和范围。

Claims (19)

  1. 一种用于电池的温度采样单元(6)，包括：壳体(61)，以及固定于所述壳体(61)内的温度传感器(62)、导热体(63)、第一导电体(64)和第二导电体(65)；
    所述温度传感器(62)包括本体(621)，以及连接所述本体(621)的第一导线(622)和第二导线(623)；
    所述第一导线(622)与所述第一导电体(64)连接，所述第二导线(623)与所述第二导电体(65)连接；
    所述导热体(63)与所述温度传感器(62)的本体(621)连接。
  2. 根据权利要求1所述的温度采样单元(6)，其中，所述壳体(61)具有第一窗口(611)、第二窗口(612)和第三窗口(613)；所述第一导电体(64)、所述第二导电体(65)和所述导热体(63)分别设置于所述第一窗口(611)、所述第二窗口(612)和所述第三窗口(613)上，并且所述第一导电体(64)的至少部分、所述第二导电体(65)的至少部分以及所述导热体(63)的至少部分露出于所述壳体(61)。
  3. 根据权利要求2所述的温度采样单元(6)，其中，所述第一窗口(611)和所述第二窗口(612)位于所述壳体(61)的正面，所述第三窗口(613)位于所述壳体(61)的背面。
  4. 根据前述权利要求任意一项所述的温度采样单元(6)，其中，所述导热体(63)包括主体部(631)和延伸部(632)，所述主体部(631)和所述延伸部(632)形成用于容纳所述温度传感器(62)的容纳槽(633)。
  5. 根据前述权利要求任意一项所述的温度采样单元(6)，其中，所述导热体(63)具有第一过线槽(634)和第二过线槽(635)，所述第一导线(622)位于所述第一过线槽(634)中，所述第二导线(623)位于所述第二过线槽(635)中。
  6. 根据前述权利要求任意一项所述的温度采样单元(6)，其中，所述第一导电体(64)上设有第一连接槽(641)，所述第一导线(622)固定于所述第一连接槽(641)；所述第二导电体(65)上设有第二连接槽(651)，所述第二导线(623)固定在所述第二连接槽(651)中。
  7. 根据前述权利要求任意一项所述的温度采样单元(6)，其中，还包括卡钉(66)，所述壳体(61)上设有连接通孔(614)，所述卡钉(66)与所述连接通孔(614)配合用于固定所述温度采样单元(6)。
  8. 根据前述权利要求任意一项所述的温度采样单元(6)，其中，所述壳体(61)的边缘设有两个开口槽(615)。
  9. 根据前述权利要求任意一项所述的温度采样单元(6)，其中，所述壳体(61)通过注塑成型方式固定所述温度传感器(62)、导热体(63)、第一导电体(64)和第二导电体(65)。
  10. 根据前述权利要求任意一项所述的温度采样单元(6)，其中，所述温度传感器(62)被塑封在所述壳体(61)内。
  11. 一种电池模组(1)，包括：
    多个单体电池(11)，所述多个单体电池(11)堆叠设置；
    连接片(2)，所述多个单体电池(11)之间通过所述连接片(2)并联或者串联连接；
    温度采样单元(6)，所述温度采样单元(6)为根据权利要求1至10任一项所述的温度采样单元(6)；
    采集线(3)，所述采集线(3)与所述温度采样单元(6)电连接；
    连接器(5)，与所述采集线(3)相连。
  12. 根据权利要求11所述的电池模组(1)，其中，所述电池模组(1)还包括卡钉(66)，所述连接片(2)具有安装孔(21)，所述温度采样单元(6)具有连接通孔(614)，所述卡钉(66)的一端穿过所述连接通孔(614)并卡合在所述安装孔(21)中，从而将所温度采样单元(6)固定在所述连接片(2)上。
  13. 根据前述权利要求11-12任意一项所述的电池模组(1)，其中，所述温度采样单元(6)的壳体(61)的边缘处设有开口槽(615)，在所述开口槽(615)处注入胶水而将所述壳体(61)与所述连接片(2)胶粘。
  14. 根据前述权利要求11-13任意一项所述的电池模组(1)，其中，还包括连接件(4)，所述采集线(3)和所述连接器(5)之间通过所述连接件(4)连接。
  15. 一种电池包(7)，包括如前述权利要求10-14任意一项所述的电池模组(1)。
  16. 一种用于电池的温度采样单元(6)的制作方法，包括以下步骤：
    提供温度传感器(62)，导热体(63)，第一导电体(64)，第二导电体(65)，所述温度传感器(62)包括本体(621)以及分别与所述本体(621)相连的第一导线(622)和第二导线(623)；
    将所述温度传感器(62)的本体(621)放置在所述导热体(63)上并固定；
    将所述温度传感器(62)的第一导线(622)和第二导线(623)分别连接到在所述第一导电体(64)和所述第二导电体(65)上；
    将连接好的所述温度传感器(62)、所述第一导电体(64)、所述第二导电体(65)和所述导热体(63)放置到模具中进行注塑形成一个整体结构，
    使得所述温度传感器(62)的本体(621)、第一导线(622)和第二导线(623)均被包塑在注塑材料形成的壳体(61)中。
  17. 如前述权利要求16所述的制作方法，其中，所述导热体(63)设有容纳槽(633)，所述制作方法还包括：将所述温度传感器(62)的本体(621)放置在所述导热体(63)的容纳槽(633)中并固定。
  18. 如前述权利要求16或17所述的制作方法，其中，所述导热体(63)设有第一过线槽(634)，所述第一导电体(64)上设有第一连接槽(641)，所述制作方法还包括：所述温度传感器(62)的第一导线(622)穿过所述第一过线槽(634)并连接到所述第一连接槽(641)。
  19. 如权利要求18所述的制作方法，其中，所述导热体(63)设有第二过线槽(635)，所述第二导电体(65)上设有第二连接槽(651)，所述制作方法还包括：所述温度传感器(62)的第二导线(623)穿过所述第二过线槽(635)并连接到所述第二连接槽(651)。
PCT/CN2019/110283 2018-10-11 2019-10-10 一种用于电池的温度采样单元、包括其的电池模组、电池包及其制作方法 Ceased WO2020073939A1 (zh)

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WO2022006801A1 (zh) * 2020-07-09 2022-01-13 威睿电动汽车技术(宁波)有限公司 温度监测装置及包含该装置的电池模组
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