WO2020073939A1

WO2020073939A1 - Temperature sampling unit for battery, battery module and battery pack comprising same, and method for manufacturing same

Info

Publication number: WO2020073939A1
Application number: PCT/CN2019/110283
Authority: WO
Inventors: 曹华源; 曹华
Original assignee: 宁德时代新能源科技股份有限公司
Priority date: 2018-10-11
Filing date: 2019-10-10
Publication date: 2020-04-16
Also published as: CN208904177U

Abstract

A temperature sampling unit (6) for a battery, comprising: a housing (61), and 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) comprises a main body (621), and a first wire (622) and a second wire (623) connected to the main body (612); the first wire (622) is connected to the first electrical conductor (64), and the second wire (623) is connected to the second electrical conductor (65); the thermal conductor (63) is connected to the main body (621) of the temperature sensor (62).

Description

Temperature sampling unit for battery, battery module including the same, battery pack and manufacturing method thereof

cross reference

This application requires the priority of China Patent Application No. 201821647856.8, which was submitted on October 11, 2018, and is entitled "A Battery Module and Temperature Sampling Unit", which is fully incorporated by reference into this application.

Technical field

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.

Background technique

In power batteries, 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.

Summary of the invention

The inventor discovered in the process of invention: 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. In 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. When 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.

Therefore, 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.

Some embodiments of the present application provide 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.

As another embodiment, in the temperature sampling unit, 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.

In addition, in the temperature sampling unit, 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.

As another embodiment, in the temperature sampling unit, 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.

In addition, in the temperature sampling unit, 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.

As another embodiment, in the temperature sampling unit, 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.

As another embodiment, 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.

As another embodiment, in the temperature sampling unit, two opening grooves are provided on the edge of the housing.

As another embodiment, in the temperature sampling unit, the housing fixes the temperature sensor, the heat conductor, the first electrical conductor, and the second electrical conductor by injection molding.

In addition, in the temperature sampling unit, the temperature sensor (62) is molded in the housing (61).

Corresponding to a temperature sampling unit of the present application, 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.

As another embodiment, in the battery module, the collection line is connected to the connector through a connector.

In addition, the battery module further includes a connecting piece, and the plurality of single cells are connected through the connecting piece.

In addition, the battery module further includes a clip, the connection piece has a mounting hole, the temperature sampling unit has a connection through hole, and 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.

In addition, in the battery module, 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.

In addition, 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:

Provide a temperature sensor, a heat conductor, a first electrical conductor, and a second electrical conductor. The temperature sensor includes a body and first and second wires connected to the body, respectively;

Placing the body of the temperature sensor on the heat conductor and fixing it;

Connect the first lead and the second lead of the temperature sensor to the first electrical conductor and the second electrical conductor, 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.

In some embodiments, the heat conductor is provided with a receiving groove, and the manufacturing method further includes: placing and fixing the body of the temperature sensor in the receiving groove of the heat conductor.

In some embodiments, 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.

In some embodiments, 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.

As described above, some embodiments of the present application now have the following beneficial effects to the prior art: 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.

BRIEF DESCRIPTION

One or more embodiments are exemplified by the pictures in the corresponding drawings. These exemplary descriptions do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a scale limitation.

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.

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.

9 shows an exploded view of a battery pack of this application.

FIG. 10 shows a schematic diagram of a mobile device of the present application.

Component label description

1 Battery module

11 Single battery

2 Connection piece

21 mounting holes

3 Collection line

4 Connector

5 Connector

6 Temperature sampling unit

61 Shell

611 First window

612 Second window

613 Third window

614 Connect via

615 Open slot

62 temperature sensor

621 Ontology / chip

622 first wire

623 second wire

63 thermal conductor

631 Main body

632 Extension

633 accommodation slot

634 First trough

635 Second trough

636 bottom

64 first electrical conductor

641 First connection slot

65 Second conductor

651 Second connection slot

66 staples

7 battery pack

71 Upper shell

72 Lower case

8 Motorized equipment

81 Housing for mobile equipment

Specific examples

In order to make the purpose, technical solutions and advantages of the present application clearer, some embodiments of the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

The following describes the implementation of the present application by specific specific examples. Those familiar with this technology can easily understand other advantages and effects of the present application by the contents disclosed in this specification.

It should be noted that the structure, ratio, size, etc. shown in the drawings of this specification are only used to match the contents disclosed in the specification, for those familiar with this technology to understand and read, not to limit the application of this application. Limited conditions, so it has no technical significance. Any modification of structure, change of proportional relationship or adjustment of size should still fall within this application without affecting the efficacy and the purpose that can be achieved by this application. The disclosed technical content can be covered. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this manual are only for the convenience of description, not to limit this. The scope of implementation of the application, and the change or adjustment of its relative relationship, without substantial changes in the technical content, shall also be regarded as the scope of application of this application.

As shown in FIG. 1, 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. As shown in FIGS. 2 and 3, 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. In other words, one end of the staple 66 passes through the connection through hole 614 and is engaged in the mounting hole 21.

As shown in FIGS. 4, 5 and 6, 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.

In a temperature sampling unit of some embodiments of the present application, 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.

In a temperature sampling unit of some embodiments of the present application, as shown in FIGS. 5-7, 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. In order to collect the temperature signal detected by the temperature sensor 62, 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. 4 As shown, 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. As shown in FIGS. 1 and 2, 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. In a temperature sampling unit of the present application, 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.

In some embodiments, after the temperature sampling unit is installed in the battery module 1, 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. As shown in FIG. 4, 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.

In a temperature sampling unit of some embodiments of the present application, 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. In this way, 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. 5 and 6, 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. In order to facilitate the connection of the first wire 622 and the second wire 623, as shown in FIGS. 5 and 6, 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.

In some embodiments of the present application, 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. Put the chip 621 of the temperature sensor 62 in the receiving groove 633 of the heat conductor 63 and fix it with glue, and then pass the first wire 622 of the temperature sensor 62 through the first wire groove 634 and solder it in the first connection groove 641 , The second wire 623 of the temperature sensor 62 is passed through the second wire groove 635 and soldered in the second connection groove 651, the temperature sensor 62, the first electrical conductor 64, the second electrical conductor 65 and the thermal conductor 63 are placed 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.

In order to facilitate the installation of the temperature sampling unit 6, as shown in FIG. 4 or FIG. 8, 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.

Corresponding to a temperature sampling unit, 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.

Correspondingly, some embodiments of the present application provide a battery pack 7. As shown in FIG. 9, 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. First, 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 (eg, vehicles, ships, small aircraft, etc.) 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.

Based on the technical solution of the above embodiment, in 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. Certainly, a battery module of some embodiments of the present application also has the above-mentioned beneficial effects, which will not be repeated here.

In summary, this application effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

The above-mentioned embodiments merely exemplify the principle and efficacy of the present application, and are not intended to limit the present application. Anyone familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in this application should still be covered by the claims of this application.

Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes can be made in form and detail without departing from the spirit and range.

Claims

A temperature sampling unit (6) for a battery includes a housing (61), a temperature sensor (62) fixed in the housing (61), a heat conductor (63), and a first electrical conductor ( 64) and the second electrical conductor (65);

The temperature sensor (62) includes a body (621), and a first wire (622) and a second wire (623) connected to the body (621);

The first wire (622) is connected to the first electrical conductor (64), and the second wire (623) is connected to the second electrical conductor (65);

The heat conductor (63) is connected to the body (621) of the temperature sensor (62).
The temperature sampling unit (6) according to claim 1, wherein the housing (61) has a first window (611), a second window (612), and a third window (613); the first conductive The body (64), the second electrical conductor (65) and the thermal conductor (63) are respectively disposed in the first window (611), the second window (612) and the third window (613) ), And at least part of the first electrical conductor (64), at least part of the second electrical conductor (65), and at least part of the thermal conductor (63) are exposed to the housing (61).
The temperature sampling unit (6) according to claim 2, wherein the first window (611) and the second window (612) are located on the front of the housing (61), and the third window ( 613) is located on the back of the housing (61).
The temperature sampling unit (6) according to any one of the preceding claims, wherein the thermal conductor (63) includes a body portion (631) and an extension portion (632), the body portion (631) and the extension The portion (632) forms a receiving groove (633) for receiving the temperature sensor (62).
The temperature sampling unit (6) according to any one of the preceding claims, wherein the heat conductor (63) has a first wire trough (634) and a second wire trough (635), the first wire (622) is located in the first wire trough (634), and the second wire (623) is located in the second wire trough (635).
The temperature sampling unit (6) according to any one of the preceding claims, wherein the first conductor (64) is provided with a first connection groove (641), and the first wire (622) is fixed to the The first connection 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).
The temperature sampling unit (6) according to any one of the preceding claims, further comprising a staple (66), the housing (61) is provided with a connecting through hole (614), and the staple (66) ) Cooperates with the connecting through hole (614) to fix the temperature sampling unit (6).
The temperature sampling unit (6) according to any one of the preceding claims, wherein the edge of the housing (61) is provided with two open slots (615).
The temperature sampling unit (6) according to any one of the preceding claims, wherein the housing (61) fixes the temperature sensor (62), the heat conductor (63), the first electrical conductor (1) by injection molding 64) and the second electrical conductor (65).
The temperature sampling unit (6) according to any one of the preceding claims, wherein the temperature sensor (62) is molded in the housing (61).
A battery module (1), including:

A plurality of single cells (11), the multiple single cells (11) are arranged in a stack;

A connecting piece (2), the multiple unit cells (11) are connected in parallel or in series through the connecting piece (2);

A temperature sampling unit (6), the temperature sampling unit (6) being the temperature sampling unit (6) according to any one of claims 1 to 10;

A collection line (3), which is electrically connected to the temperature sampling unit (6);

The connector (5) is connected to the collection line (3).
The battery module (1) according to claim 11, wherein the battery module (1) further includes a staple (66), the connecting piece (2) has a mounting hole (21), the temperature sampling The unit (6) has a connecting through hole (614), and one end of the clip (66) passes through the connecting through hole (614) and is snapped into the mounting hole (21), thereby sampling the temperature sampling unit (6) It is fixed on the connecting piece (2).
The battery module (1) according to any one of the preceding claims 11-12, wherein an opening groove (615) is provided at an edge of the casing (61) of the temperature sampling unit (6), Glue is injected into the opening groove (615) to glue the casing (61) and the connecting piece (2).
The battery module (1) according to any one of the preceding claims 11-13, further comprising a connecting member (4), the collection line (3) and the connector (5) passing through the The connecting piece (4) is connected.
A battery pack (7) comprising the battery module (1) according to any one of the preceding claims 10-14.
A method for manufacturing a temperature sampling unit (6) for a battery includes the following steps:

A temperature sensor (62), a heat conductor (63), a first electrical conductor (64), and a second electrical conductor (65) are provided. The temperature sensor (62) includes a body (621) and a body (621) respectively The connected first wire (622) and second wire (623);

Placing the body (621) of the temperature sensor (62) on the heat conductor (63) and fixing;

Connect the first wire (622) and the second wire (623) of the temperature sensor (62) to the first electrical conductor (64) and the second electrical conductor (65), respectively;

Placing the connected temperature sensor (62), the first electrical conductor (64), the second electrical conductor (65) and the thermal conductor (63) into a mold for injection molding to form an integral structure,

In this way, the body (621), the first wire (622) and the second wire (623) of the temperature sensor (62) are all encapsulated in the casing (61) formed by the injection molding material.
The manufacturing method according to claim 16, wherein the heat conductor (63) is provided with a receiving groove (633), the manufacturing method further comprises: placing the body (621) of the temperature sensor (62) in The heat-conducting body (63) is accommodated in the accommodating groove (633) and fixed.
The manufacturing method according to claim 16 or 17, wherein the heat conducting body (63) is provided with a first wire passing groove (634), and the first electrical conductor (64) is provided with a first connecting groove ( 641), the manufacturing method further includes that: the first wire (622) of the temperature sensor (62) passes through the first wire trough (634) and is connected to the first connection slot (641).
The manufacturing method according to claim 18, wherein the heat conductor (63) is provided with a second wire passage (635), and the second conductor (65) is provided with a second connection groove (651), The manufacturing method further includes that: the second wire (623) of the temperature sensor (62) passes through the second wire trough (635) and is connected to the second connection slot (651).