CN217586074U

CN217586074U - Locking piece, battery core temperature detection module, battery package tray and battery package tray subassembly

Info

Publication number: CN217586074U
Application number: CN202220932059.4U
Authority: CN
Inventors: 董立涛; 周啸; 李子薇
Original assignee: Tyco Electronics Shanghai Co Ltd
Current assignee: Tyco Electronics Shanghai Co Ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-10-14
Anticipated expiration: 2032-04-21

Abstract

The utility model discloses a locking piece, battery core temperature detect module, battery package tray and battery package tray subassembly. The locking piece includes: a body; a connecting plate connected to the body; a pre-lock structure formed on the connection plate and adapted to engage with a counterpart pre-lock structure on the battery pack tray to hold the locking member in the pre-lock position; and a final lock structure formed on the connecting plate and adapted to engage a mating final lock structure on the battery pack tray to retain the locking member in the final lock position. When the locking member is in the pre-locking position, the temperature detection assembly adhered to the locking member is in a pre-installation position where it cannot contact the battery cell; when the locking member is in the final lock position, the temperature detection member bonded to the locking member is in the mounting position capable of contacting the battery cell. The utility model discloses in, the customer only needs to press the locking piece to the final locking position just can be fixed temperature sensor to the battery core on, consequently, has simplified the fixed operation of fixing temperature sensor to on the battery core.

Description

Locking piece, battery core temperature detection module, battery package tray and battery package tray subassembly

Technical Field

The utility model relates to a locking piece for inciting somebody to action temperature-detecting subassembly installs on battery package tray, including the battery core temperature detection module and the battery package tray of this locking piece and the battery package tray subassembly including this battery core temperature detection module and this battery package tray.

Background

In the related art, a power battery pack generally has a battery pack tray on which bus bars electrically connected to battery cells and a temperature sensor detecting the temperature of the battery cells are mounted. In order to increase the response speed of the temperature sensor, the temperature sensor is generally directly fixed to the battery cell to directly detect the temperature of the battery cell.

In the prior art, the temperature sensor is usually adhered and fixed on the battery core by glue dispensing or fixed on the battery core by a separate fixing member, which causes inconvenience for customers because the customer needs to perform glue dispensing operation or connect the fixing member.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve at least one of the above problems and drawbacks existing in the prior art.

According to an aspect of the present invention, there is provided a locking member for mounting a temperature detection assembly to a battery pack tray. The locking member includes: a body; a connection plate connected to the body; a pre-lock structure formed on the connection plate and adapted to engage with a counterpart pre-lock structure on a battery pack tray to hold the locking member in a pre-lock position; and a final lock structure formed on the connecting plate and adapted to engage a mating final lock structure on a battery pack tray to hold the locking member in a final lock position. When the locking member is in the pre-locking position, the temperature detection assembly adhered to the locking member is in a pre-installation position where it cannot contact the battery core; when the locking member is in the final lock position, the temperature detection member bonded to the locking member is in a mounting position capable of contacting the battery cell.

According to an exemplary embodiment of the invention, the connecting plate comprises a first side plate and a second side plate connected to the body; the pre-locking structure is formed on one of the first side plate and the second side plate, and the final locking structure is formed on the other of the first side plate and the second side plate; the locking piece is of a symmetrical structure.

According to another exemplary embodiment of the present invention, the pre-lock structure comprises: a pre-locking protrusion formed on a surface of the second side plate; and a pre-locking surface formed on the pre-locking protrusion, the pre-locking protrusion being adapted to engage with a pre-locking groove formed on the battery pack tray, the pre-locking surface being adapted to engage with a mating pre-locking surface constituting one inner side surface of the pre-locking groove.

According to another exemplary embodiment of the present invention, the final locking structure comprises: a final locking slot formed on the first side plate; and a final locking surface forming an inner side of the final locking groove, the final locking groove adapted to engage with a final locking protrusion formed on the battery pack tray, the final locking surface adapted to engage with a mating final locking surface formed on the final locking protrusion.

According to another exemplary embodiment of the present invention, the first side plate and the second side plate are perpendicularly connected to the bottom surface of the body; the final locking surface and the pre-locking surface are perpendicular to the thickness direction of the body, and the final locking surface is closer to the bottom surface of the body than the pre-locking surface.

According to another exemplary embodiment of the present invention, the body has two opposite ends in a longitudinal direction thereof, one of the first side plates and one of the second side plates being provided at each end of the body; first and second side plates at either end of the body face and are spaced apart from each other in a longitudinal direction of the body to allow an insert plate formed on the battery pack tray to be inserted between the first and second side plates.

According to another exemplary embodiment of the present invention, the first side plate is located outside the second side plate, and the pre-locking protrusion is formed on a surface of the second side plate facing the first side plate.

According to another aspect of the utility model, a battery core temperature detection module is provided, include: the locking member; and a temperature sensing assembly bonded to a bottom of the body of the locking member.

According to another exemplary embodiment of the present invention, the temperature detection assembly includes: a circuit board; the temperature sensor is welded on the bottom surface of the circuit board; a flexible flat cable soldered to the circuit board and electrically connected with the temperature sensor via conductive traces on the circuit board; and a heat conduction pad adhered to a bottom surface of the circuit board and wrapping the temperature sensor, the circuit board being adhered to a bottom of the body of the locking member, the heat conduction pad being for thermally contacting the battery cell to transfer heat of the battery cell to the temperature sensor.

According to another exemplary embodiment of the present invention, the temperature sensing assembly further includes an elastic member, a top surface of the elastic member is adhered to a bottom of the body of the locking member, and a bottom surface of the elastic member is adhered to a top surface of the circuit board; when the locking member is in the final lock position, the elastic member is elastically deformed under the pressing of the locking member to apply a predetermined pressing force on the temperature detection assembly.

According to another exemplary embodiment of the present invention, the temperature sensing assembly further comprises a frame body having an inner cavity and bonded to a bottom surface of the circuit board; the heat conducting pad is made of heat conducting glue formed in the inner cavity of the frame body through a glue injection process.

According to another exemplary embodiment of the present invention, the temperature detection assembly includes: a flexible printed circuit board; a temperature sensor welded on the bottom surface of the flexible printed circuit board; and a thermal pad adhered to a bottom surface of the flexible printed circuit board and wrapping the temperature sensor, the flexible printed circuit board being adhered to a bottom of the body of the locking member, the thermal pad being for thermally contacting the battery cell to transfer heat of the battery cell to the temperature sensor.

According to another exemplary embodiment of the present invention, the temperature sensing assembly further includes an elastic member, a top surface of the elastic member is adhered to a bottom of the body of the locking member, and a bottom surface of the elastic member is adhered to a top surface of the flexible printed circuit board; when the locking member is in the final lock position, the elastic member is elastically deformed under the pressing of the locking member to apply a predetermined pressing force on the temperature detection assembly.

According to another exemplary embodiment of the present invention, the temperature sensing assembly further comprises a frame body having an inner cavity and bonded to a bottom surface of the flexible printed circuit board; the heat conducting pad is made of heat conducting glue formed in the inner cavity of the frame body through a glue injection process.

According to another aspect of the present invention, there is provided a battery pack tray, including: a tray body having an opening formed thereon to allow the temperature sensing assembly to pass therethrough; the inserting plate is connected to the tray body; a mating prelock structure formed on said insert plate and adapted to engage said prelock structure on said locking member; and a mating final lock structure formed on the insert plate and adapted to engage the final lock structure on the locking member.

According to an exemplary embodiment of the present invention, the pairing pre-lock structure includes: a pre-locking groove formed on the insert plate and adapted to engage with the pre-locking projection on the locking member; and a mating pre-lock surface forming an inner side of the pre-lock groove and adapted to engage with the pre-lock surface on the locking member.

According to another exemplary embodiment of the present invention, the pairing end lock structure includes: a final locking projection formed on said insert plate and adapted to engage a final locking groove on said locking member; and a mating final locking surface formed on the final locking projection and adapted to engage the final locking surface on the locking element.

According to another exemplary embodiment of the present invention, the insert plate is perpendicular to the tray body and extends upward from a top surface of the tray body; the matching final locking surface and the matching pre-locking surface are perpendicular to the thickness direction of the tray body, and the matching pre-locking surface is closer to the top surface of the tray body than the matching final locking surface.

According to another exemplary embodiment of the present invention, the two sides of the opening of the tray body are respectively provided with one of the insert plates, and each insert plate is adapted to be inserted into a gap between the first side plate and the second side plate of one end of the locking member.

According to another aspect of the utility model, a battery package tray subassembly is provided, include: the battery pack tray; and the battery core temperature detection module is arranged on the battery pack tray.

According to an exemplary embodiment of the present invention, when the locking member is in the pre-locking position, the temperature detection assembly protrudes slightly or does not protrude from the bottom surface of the tray body to prevent the temperature detection assembly from being accidentally bumped; when the locking member is in the final locking position, the temperature sensing assembly protrudes from the bottom surface of the tray body by a predetermined height to be in thermal contact with the surface of the battery cell.

In each of the foregoing exemplary embodiments according to the present invention, the customer can fix the temperature sensor to the battery cell by only pressing the locking member to the final lock position, and therefore, the fixing operation of fixing the temperature sensor to the battery cell is simplified.

Other objects and advantages of the present invention will become apparent from the following description of the invention, which is made with reference to the accompanying drawings, and can help to provide a thorough understanding of the present invention.

Drawings

Fig. 1 shows a schematic perspective view of a battery pack tray assembly according to an exemplary embodiment of the present invention;

fig. 2 shows an exploded schematic view of a battery pack tray assembly according to an exemplary embodiment of the present invention, as viewed from the bottom;

fig. 3 shows a cross-sectional view of a battery pack tray assembly with a locking member in a pre-lock position according to an exemplary embodiment of the present invention;

fig. 4 shows an exploded schematic view of a locking member and a battery pack tray according to an exemplary embodiment of the present invention;

fig. 5 shows a cross-sectional view of a locking member and a battery pack tray according to an exemplary embodiment of the present invention;

fig. 6 shows a cross-sectional view of a battery pack tray assembly with a locking member in a final lock position according to an exemplary embodiment of the present invention;

fig. 7 shows a perspective view of a battery pack tray assembly according to another exemplary embodiment of the present invention;

fig. 8 shows an exploded schematic view of a battery pack tray assembly according to another exemplary embodiment of the present invention, as viewed from the bottom;

fig. 9 shows a cross-sectional view of a battery pack tray assembly with a locking member in a pre-lock position according to another exemplary embodiment of the present invention;

fig. 10 shows a cross-sectional view of a battery pack tray assembly according to another exemplary embodiment of the present invention, wherein the locking member is in a final lock position.

Detailed Description

The technical solution of the present invention is further specifically described below by way of embodiments and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the invention with reference to the drawings is intended to explain the general inventive concept and should not be taken as a limitation of the invention.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.

According to a general technical concept of the present invention, there is provided a locking member for mounting a temperature sensing assembly to a battery pack tray. The locking member includes: a body; a connecting plate connected to the body; a pre-lock structure formed on the connection plate and adapted to engage with a counterpart pre-lock structure on a battery pack tray to hold the locking member in a pre-lock position; and a final lock structure formed on the connecting plate and adapted to engage a mating final lock structure on a battery pack tray to hold the locking member in a final lock position. When the locking member is in the pre-locking position, the temperature detection assembly adhered to the locking member is in a pre-assembly position where it cannot contact the battery cell; when the locking member is in the final lock position, the temperature sensing member bonded to the locking member is in a mounting position capable of contacting the battery cell.

According to another general technical concept of the present invention, there is provided a battery cell temperature detecting module, including: the locking member; and a temperature sensing assembly bonded to a bottom of the body of the locking member.

According to another general technical concept of the present invention, there is provided a battery pack tray, including: a tray body having an opening formed thereon to allow the temperature sensing assembly to pass therethrough; the inserting plate is connected to the tray body; a mating prelock structure formed on said insert plate and adapted to engage said prelock structure on said locking member; and a mating final lock structure formed on the insert plate and adapted to engage the final lock structure on the locking member.

According to another general technical concept of the present invention, there is provided a battery pack tray assembly, including: the battery pack tray; and the battery core temperature detection module is arranged on the battery pack tray.

Fig. 1 shows a schematic perspective view of a battery pack tray assembly according to an exemplary embodiment of the present invention; fig. 2 shows an exploded schematic view of a battery pack tray assembly according to an exemplary embodiment of the present invention, as viewed from the bottom; fig. 3 shows a cross-sectional view of a battery pack tray assembly according to an exemplary embodiment of the present invention, wherein locking member 10 is in a pre-lock position; fig. 6 shows a cross-sectional view of a battery pack tray assembly according to an exemplary embodiment of the present invention, wherein locking member 10 is in a final lock position.

As shown in fig. 1-3 and 6, in the illustrated embodiment, the battery pack tray assembly includes: a battery pack tray 20, and battery cell

temperature detection modules

10, 30 mounted on the battery pack tray 20. The battery cell

temperature detection modules

10, 30 include a locking member 10 and a battery cell temperature detection assembly 30.

Fig. 4 shows an exploded schematic view of the locking member 10 and the battery pack tray 20 according to an exemplary embodiment of the present invention; fig. 5 shows a cross-sectional view of the locking member 10 and the battery pack tray 20 according to an exemplary embodiment of the present invention.

As shown in fig. 1 to 6, in the illustrated embodiment, the locking member 10 is used to mount the temperature sensing assembly 30 to the battery pack tray 20. The lock 10 includes: body 100,

webs

11, 12,

prelock structures

120, 120a and

final lock structures

110, 110a. The

connection plates

11, 12 are connected to the body 100. The

pre-lock structures

120, 120a are formed on the

connection plates

11, 12 and are adapted to engage with mating

pre-lock structures

222, 222a on the battery pack tray 20 to hold the locking member 10 in the pre-lock position. A

final lock structure

110, 110a is formed on the

connection plates

11, 12 and is adapted to engage with a counterpart

final lock structure

221, 221a on the battery pack tray 20 to hold the locking member 10 in the final lock position.

As shown in fig. 1 to 6, in the illustrated embodiment, when the locking member 10 is in the prelock position, the temperature sensing member 30 bonded to the locking member 10 is in a pre-load position where it cannot contact the battery cell; when the locking member 10 is in the final locking position, the temperature detection member 30 adhered to the locking member 10 is in the mounting position capable of contacting the battery cell.

As shown in fig. 1 to 6, in the illustrated embodiment, the connecting

plates

11, 12 include a first side plate 11 and a second side plate 12 connected to the body 100. The

pre-lock structure

120, 120a is formed on one of the first and

second side plates

11, 12, and the

final lock structure

110, 110a is formed on the other of the first and

second side plates

11, 12. In the illustrated embodiment, the locking element 10 is of a symmetrical configuration having a first plane of symmetry perpendicular to the longitudinal direction of the body 100 and a second plane of symmetry perpendicular to the transverse direction of the body 100.

As shown in fig. 1-6, in the illustrated embodiment, the

pre-lock structure

120, 120a includes: a pre-lock protrusion 120 and a pre-lock surface 120a. A pre-lock protrusion 120 is formed on a surface of the second side plate 12. The preliminary locking surface 120a is formed on the preliminary locking protrusion 120. The pre-lock protrusion 120 is adapted to engage with a pre-lock slot 222 formed on the battery pack tray 20. The pre-lock surface 120a is adapted to engage a mating pre-lock surface 222a that forms one of the inner side surfaces of the pre-lock slot 222.

As shown in fig. 1-6, in the illustrated embodiment, the

final lock structure

110, 110a includes: a final locking groove 110 and a final locking face 110a. The final locking groove 110 is formed on the first side plate 11. The end locking face 110a constitutes an inner side face of the end locking slot 100. The final locking groove 100 is adapted to engage with a final locking protrusion 221 formed on the battery pack tray 20. The final locking face 110a is adapted to engage a mating final locking face 221a formed on the final locking projection 221.

As shown in fig. 1 to 6, in the illustrated embodiment, a first side plate 11 and a second side plate 12 are perpendicularly attached to the bottom surface of the body 100. The final locking surface 110a and the pre-locking surface 120a are perpendicular to the thickness direction of the body 100, and the final locking surface 110a is closer to the bottom surface of the body 100 than the pre-locking surface 120a.

As shown in fig. 1 to 6, in the illustrated embodiment, the body 100 has opposite ends in a longitudinal direction thereof, and one first side plate 11 and one second side plate 12 are provided at each end of the body 100. The first side plate 11 and the second side plate 12 located at either end of the body 100 face and are spaced apart from each other in the longitudinal direction of the body 100 to allow the insert plate 22 formed on the battery pack tray 20 to be inserted between the first side plate 11 and the second side plate 12.

As shown in fig. 1 to 6, in the illustrated embodiment, the first side plate 11 is located outside the second side plate 12, and the pre-lock protrusion 120 is formed on a surface of the second side plate 12 facing the first side plate 11.

As shown in fig. 1 to 6, in the illustrated embodiment, the locking member 10 is an integrally formed member. For example, the locking member 10 may be a one-piece injection molded part.

As shown in fig. 1 to 6, in an exemplary embodiment of the present invention, a battery cell

temperature detection module

10, 30 is also disclosed. The battery cell

temperature detection module

10, 30 should include: a locking member 10 and a temperature sensing assembly 30. The temperature sensing member 30 is adhered to the bottom of the body 100 of the locking member 10.

As shown in fig. 1 to 6, in the illustrated embodiment, the temperature detection assembly 30 includes: a circuit board 32, a temperature sensor 33, a Flexible Flat Cable (FFC) 34, and a thermal pad 35. The temperature sensor 33 is soldered on the bottom surface of the circuit board 32. A flexible flat cable 34 is soldered to the circuit board 32 and electrically connected to the temperature sensor 33 via conductive traces on the circuit board 32. A thermal pad 35 is bonded to the bottom surface of the circuit board 32 and wraps around the temperature sensor 33. The circuit board 32 is bonded to the bottom of the body 100 of the lock member 10, and the thermal pad 35 is used to thermally contact the battery cell to transfer the heat of the battery cell to the temperature sensor 33.

As shown in fig. 1 to 6, in the illustrated embodiment, the temperature detection assembly 30 further includes an elastic member 31. The top surface of the elastic member 31 is adhered to the bottom of the body 100 of the locking member 10, and the bottom surface of the elastic member 31 is adhered to the top surface of the circuit board 32.

As shown in fig. 6, in the illustrated embodiment, when the locking member 10 is in the final locking position, the elastic member 31 is elastically deformed under the pressing of the locking member 10 to apply a predetermined pressing force on the temperature detection assembly 30. In this way, reliable thermal contact of the temperature detection assembly 30 with the battery cell can be ensured.

As shown in fig. 1-6, in the illustrated embodiment, the temperature sensing assembly 30 further includes a frame 36, the frame 36 having an interior cavity and being bonded to the bottom surface of the circuit board 32. In the illustrated embodiment, the thermal pad 35 is a thermal conductive paste formed in the cavity of the frame 36 by a paste injection process.

As shown in fig. 1 to 6, in the illustrated embodiment, the battery pack tray 20 includes: the tray 21, the board 22, the

mating pre-locking structures

222 and 222a and the mating final-locking

structures

221 and 221a. An opening 201 allowing the temperature sensing assembly 30 to pass therethrough is formed on the tray body 21. The insert plate 22 is connected to the tray body 21.

Mating prelock structures

222, 222a are formed on insert 22 and are adapted to engage

prelock structures

120, 120a on locking member 10. Mating

final lock structures

221, 221a are formed on insert 22 and are adapted to engage

final lock structures

110, 110a on locking member 10.

As shown in fig. 1-6, in the illustrated embodiment, the

mating prelock structure

222, 222a includes: a pre-lock slot 222 and a mating pre-lock face 222a. A pre-lock slot 222 is formed in the insert plate 22 and is adapted to engage with the pre-lock protrusion 120 on the locking member 10. The mating pre-lock surface 222a forms an inner side of the pre-lock slot 222 and is adapted to engage the pre-lock surface 120a on the locking element 10.

As shown in fig. 1-6, in the illustrated embodiment, the mating

final lock structure

221, 221a includes: a final locking projection 221 and a mating final locking surface 221a. Final lock projections 221 are formed on insert plate 22 and are adapted to engage final lock grooves 110 on locking member 10. A mating final locking surface 221a is formed on the final locking projection 221 and is adapted to engage the final locking surface 110a on the locking element 10.

As shown in fig. 1-6, in the illustrated embodiment, the insert 22 is perpendicular to the tray 21 and extends upwardly from the top surface of the tray 21. The mating final locking surface 221a and the mating pre-locking surface 222a are perpendicular to the thickness direction of the tray 21, and the mating pre-locking surface 222a is closer to the top surface of the tray 21 than the mating final locking surface 221a.

As shown in fig. 1 to 6, in the illustrated embodiment, one insert plate 22 is provided on each of both sides of the opening 201 of the tray body 21, and each insert plate 22 is adapted to be inserted into a gap between the first side plate 11 and the second side plate 12 at one end of the lock member 10.

As shown in fig. 1 to 6, in the illustrated embodiment, the stopper plates 23 are formed on both sides of the insertion plate 22 in the width direction, respectively, and an inclined guide surface 23a is formed on the inner side of the end of the stopper plate 23 to guide the first side plate 11 to be inserted between the two stopper plates 23.

As shown in fig. 1 to 6, in the illustrated embodiment, when the lock 10 is in the prelock position, the temperature sensing assembly 30 slightly protrudes or does not protrude from the bottom surface of the tray 21 to prevent the temperature sensing assembly 30 from being accidentally bumped. When the locking member 10 is in the final locking position, the temperature sensing member 30 protrudes from the bottom surface of the tray body 21 by a predetermined height to be in thermal contact with the surface of the battery cell.

Fig. 7-10 illustrate a battery pack tray assembly according to another exemplary embodiment of the present invention. Fig. 7 shows a perspective view of a battery pack tray assembly according to another exemplary embodiment of the present invention; fig. 8 shows an exploded schematic view of a battery pack tray assembly according to another exemplary embodiment of the present invention, as viewed from the bottom; fig. 9 shows a cross-sectional view of a battery pack tray assembly according to another exemplary embodiment of the present invention, wherein locking member 10 is in a pre-lock position; fig. 10 shows a cross-sectional view of a battery pack tray assembly according to another exemplary embodiment of the present invention, wherein locking member 10 is in a final locking position.

The embodiment shown in fig. 7 to 10 is mainly different in the structure of the cell temperature detecting assembly 30, compared to the embodiment shown in fig. 1 to 6. In the embodiment shown in fig. 1-6, the cell temperature sensing assembly 30 employs a Flexible Flat Cable (FFC) 34; in the embodiment shown in fig. 7 to 10, the battery cell temperature detection assembly 30 employs a flexible printed circuit board (FPC) 340.

As shown in fig. 7 to 10, in the illustrated embodiment, the temperature detection assembly 30 includes: a flexible printed circuit board 340, a temperature sensor 33 and a thermal pad 35. The temperature sensor 33 is soldered on the bottom surface of the flexible printed circuit board 340. The thermal pad 35 is adhered to the bottom surface of the flexible printed circuit board 340 and wraps the temperature sensor 33. The flexible printed circuit board 340 is adhered to the bottom of the body 100 of the locking member 10. The thermal pad 35 is used to thermally contact the battery cell to transfer heat of the battery cell to the temperature sensor 33.

As shown in fig. 7 to 10, in the illustrated embodiment, the temperature detection assembly 30 further includes an elastic member 35. The top surface of the elastic member 35 is adhered to the bottom of the body 100 of the locking member 10, and the bottom surface of the elastic member 35 is adhered to the top surface of the flexible printed circuit board 340.

As shown in fig. 7 to 10, in the illustrated embodiment, when the locking member 10 is in the final locking position, the elastic member 35 is elastically deformed under the pressing of the locking member 10 to apply a predetermined pressing force on the temperature detection assembly 30. In this way, reliable thermal contact of the temperature detection assembly 30 with the battery cell can be ensured.

As shown in fig. 7-10, in the illustrated embodiment, the temperature sensing assembly 30 further includes a frame 36. The frame 36 has an inner cavity and is bonded to the bottom surface of the flexible printed circuit board 340. In an exemplary embodiment of the present invention, the thermal pad 35 may be a thermal conductive adhesive formed in the inner cavity of the frame 36 by an adhesive injection process.

It is understood by those skilled in the art that the above described embodiments are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle, and that these modifications are intended to fall within the scope of the present invention.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify preferred embodiments of the present invention, and should not be construed as limiting the present invention.

Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Additionally, any element numbers of the claims should not be construed as limiting the scope of the invention.

Claims

1. A locking member for mounting a temperature sensing assembly to a battery pack tray, the locking member comprising:

a body;

a connecting plate connected to the body;

a pre-lock structure formed on the connection plate and adapted to engage with a counterpart pre-lock structure on a battery pack tray to hold the locking member in a pre-lock position; and

a final lock structure formed on the connecting plate and adapted to engage a mating final lock structure on a battery pack tray to hold the locking member in a final lock position,

when the locking member is in the prelock position, the temperature sensing assembly bonded to the locking member is in a pre-load position in which it cannot contact the battery cell,

when the locking member is in the final lock position, the temperature sensing member bonded to the locking member is in a mounting position capable of contacting the battery cell.

2. A lock according to claim 1 wherein:

the connecting plate comprises a first side plate and a second side plate connected to the body;

the pre-locking structure is formed on one of the first side plate and the second side plate, and the final locking structure is formed on the other of the first side plate and the second side plate;

the locking piece is of a symmetrical structure.

3. A lock according to claim 2 wherein:

the pre-locking structure comprises:

a pre-locking protrusion formed on a surface of the second side plate; and

a pre-locking surface formed on the pre-locking protrusion,

the pre-locking protrusion is adapted to engage with a pre-locking groove formed on the battery pack tray, and the pre-locking surface is adapted to engage with a counterpart pre-locking surface constituting one inner side surface of the pre-locking groove.

4. A lock according to claim 3 wherein:

the final lock structure includes:

a final locking slot formed on the first side plate; and

an end lock face forming an inner side surface of the end lock groove,

the final locking groove is adapted to engage with a final locking protrusion formed on the battery pack tray, and the final locking surface is adapted to engage with a mating final locking surface formed on the final locking protrusion.

5. A lock according to claim 4, characterized in that:

the first side plate and the second side plate are perpendicularly connected to the bottom surface of the body;

the final locking face and the pre-locking face are perpendicular to the thickness direction of the body, and the final locking face is closer to the bottom face of the body than the pre-locking face.

6. A lock according to claim 5, characterized in that:

the body is provided with two opposite ends in the longitudinal direction, and each end of the body is provided with one first side plate and one second side plate;

the first side plate and the second side plate located at either end of the body face each other in a longitudinal direction of the body and are spaced apart to allow an insert plate formed on the battery pack tray to be inserted between the first side plate and the second side plate.

7. A lock according to claim 6 wherein:

the first side plate is located outside the second side plate, and the pre-lock protrusion is formed on a surface of the second side plate facing the first side plate.

8. A battery cell temperature detection module, comprising:

a lock according to any one of claims 1-7; and

a temperature sensing assembly bonded to a bottom of the body of the locking member.

9. The battery cell temperature detection module according to claim 8, characterized in that:

the temperature detection assembly includes:

a circuit board;

the temperature sensor is welded on the bottom surface of the circuit board;

a flexible flat cable soldered to the circuit board and electrically connected with the temperature sensor via conductive traces on the circuit board; and

a heat conductive pad adhered to a bottom surface of the circuit board and wrapping the temperature sensor,

the circuit board is adhered to the bottom of the body of the locking member, and the thermal pad is adapted to be in thermal contact with the battery cell to transfer heat from the battery cell to the temperature sensor.

10. The battery cell temperature detection module according to claim 9, characterized in that:

the temperature detection assembly further comprises an elastic member, a top surface of the elastic member is adhered to the bottom of the body of the locking member, and a bottom surface of the elastic member is adhered to the top surface of the circuit board;

when the locking member is in the final locking position, the elastic member is elastically deformed under the pressing of the locking member to apply a predetermined pressing force on the temperature detection assembly.

11. The battery cell temperature detection module according to claim 9, characterized in that:

the temperature detection assembly further comprises a frame body, wherein the frame body is provided with an inner cavity and is adhered to the bottom surface of the circuit board;

the heat conducting pad is made of heat conducting glue formed in the inner cavity of the frame body through a glue injection process.

12. The battery cell temperature detection module according to claim 8, characterized in that:

the temperature detection assembly includes:

a flexible printed circuit board;

a temperature sensor welded on the bottom surface of the flexible printed circuit board; and

a heat conductive pad adhered to a bottom surface of the flexible printed circuit board and wrapping the temperature sensor,

the flexible printed circuit board is bonded to the bottom of the body of the locking member, and the thermal pad is adapted to be in thermal contact with the battery cell to transfer heat from the battery cell to the temperature sensor.

13. The battery cell temperature detection module according to claim 12, characterized in that:

the temperature sensing assembly further includes an elastic member having a top surface adhered to the bottom of the body of the locking member and a bottom surface adhered to the top surface of the flexible printed circuit board;

14. The battery cell temperature detection module according to claim 12, characterized in that:

the temperature detection assembly further comprises a frame body having an inner cavity and bonded to the bottom surface of the flexible printed circuit board;

15. A battery pack tray, comprising:

a tray body having an opening formed thereon to allow the temperature sensing assembly to pass therethrough;

the inserting plate is connected to the tray body;

a mating pre-lock formation formed on the insert plate and adapted to engage with the pre-lock formation on the locking element of claim 1; and

a mating final lock structure formed on the insert plate and adapted to engage the final lock structure on the locking member.

16. The battery pack tray of claim 15, wherein:

the pairing pre-locking structure comprises:

a pre-locking groove formed on the insert plate and adapted to engage with the pre-locking projection on the locking member; and

a mating pre-lock surface defining an inner side of the pre-lock slot and adapted to engage the pre-lock surface on the locking member.

17. The battery pack tray of claim 16, wherein:

the mating final lock structure comprises:

a final locking projection formed on said insert plate and adapted to engage a final locking groove on said locking member; and

a mating final locking face formed on the final locking projection and adapted to engage the final locking face on the locking element.

18. The battery pack tray of claim 17, wherein:

the inserting plate is perpendicular to the tray body and extends upwards from the top surface of the tray body;

the mating final locking surface and the mating pre-locking surface are perpendicular to the thickness direction of the tray body, and the mating pre-locking surface is closer to the top surface of the tray body than the mating final locking surface.

19. The battery pack tray of claim 15, wherein:

the two sides of the opening of the tray body are respectively provided with one inserting plate, and each inserting plate is suitable for being inserted into a gap between the first side plate and the second side plate at one end of the locking piece.

20. A battery pack tray assembly, comprising:

the battery pack tray of any one of claims 15 to 19; and

the battery cell temperature detection module of any one of claims 8 to 14, mounted on the battery pack tray.

21. The battery pack tray assembly of claim 20, wherein:

when the locking member is in the pre-locking position, the temperature detection assembly protrudes slightly or does not protrude from the bottom surface of the tray body to prevent the temperature detection assembly from being accidentally bumped;

when the locking member is in the final locking position, the temperature sensing assembly protrudes from the bottom surface of the tray body by a predetermined height to be in thermal contact with the surface of the battery cell.