Temperature sensor fixing device

Abstract

The utility model relates to a temperature-sensing fixing device and belongs to the field of battery module structures. The device comprises an acquisition assembly and a fixing assembly, an acquisition assembly and a fixing assembly; the acquisition assembly comprises a circuit board, a circuit on the circuit board is provided with a plurality of branch circuits, the branch circuits are arranged on the mounting piece, and the branch circuits are communicated with temperature sensing acquisition pieces; the fixing assembly comprises a support, and a first through hole and a second through hole are formed in the support. The circuit board is used for being arranged at the top of a battery module, a pole in the battery module is located in the first through hole, and the mounting piece is fixed in the second through hole. The fixing mode is simple, the problem that the temperature sensor cannot be fixed after an integrated cover plate tray is cancelled can be solved, and the acquisition cost for directly acquiring the temperature of the battery cell is greatly saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the battery module structure field, especially relate to a fixed device of temperature sensing. BACKGROUND

[0002] In electric automobile and large -scale energy storage system, the temperature of battery greatly influences electric automobile and energy storage system's safety, therefore, carries out real -time collection battery module's temperature, forms controllable battery module, is favorable to electric automobile and energy storage system's safety monitoring.

[0003] In the prior art of real-time collection of battery module temperature, the temperature of the pole piece on the surface of the battery module is generally collected by a nickel sheet to reflect the temperature of the entire battery cell module, or the temperature of the battery cell body is collected by fixing the temperature sensing on the suction tray or injection tray. Compared with collecting the pole piece, collecting the battery cell body can more closely approach the real temperature of the battery. The prior art collects the temperature of the battery cell body by fixing the temperature sensing on the suction tray or injection tray. However, the suction or injection process has high cost. Therefore, canceling the integrated cover plate tray can greatly save costs. However, for the battery module without the integrated cover plate tray, how to fix the collection assembly is particularly important. SUMMARY

[0004] In view of the above problems, the utility model provides a fixed device of temperature sensing.

[0005] The utility model discloses the purpose that realizes through the following technical scheme:

[0006] A fixed device of temperature sensing, comprising: a collection assembly and a fixing assembly;

[0007] The collection assembly comprises a circuit board, a plurality of branch circuits are arranged on the circuit of the circuit board, the branch circuits are arranged on the mounting sheet, and the branch circuits are communicated with temperature sensing collection pieces.

[0008] The circuit board is arranged on the top of the battery module, the pole column in the battery module is arranged in the first through hole, and the mounting sheet is fixed in the second through hole.

[0009] Further, a plurality of nickel sheets are symmetrically arranged on the two sides of the circuit board, and the nickel sheets are attached to the pole pieces in the battery module.

[0010] Further, the pole column is fixedly connected with the outer frame forming the first through hole.

[0011] Further, the collection assembly further comprises a first reinforcing plate, a second reinforcing plate and a heat conducting plate, and the fixing assembly further comprises a pressing plate.

[0012] The pressing plate, the first reinforcing plate, the mounting sheet, the second reinforcing plate and the heat-conducting plate are stacked in sequence, the heat-conducting plate is in contact with the top of the battery module, the second reinforcing plate is arranged opposite to the battery module, and the pressing plate is fixed in the second through hole.

[0013] Further, the first reinforcing plate is provided with a temperature sensing point glue hole, and the temperature sensing collecting piece is arranged in the temperature sensing point glue hole.

[0014] Further, the first reinforcing plate and the second reinforcing plate are made of epoxy resin.

[0015] Further, the heat-conducting plate is in interference contact with the top of the battery module.

[0016] Further, the pressing plate is provided with a buckle, and the buckle is connected to the outer frame forming the second through hole.

[0017] Further, the fixing assembly further comprises a movable connecting sheet, and the movable connecting sheet is detachably arranged in the first through hole.

[0018] Further, the collecting assembly further comprises a supporting plate, and the supporting plate is arranged between the circuit board and the battery module.

[0019] Further, the supporting plate is fixedly connected with the circuit board.

[0020] The fixing device for temperature sensing of the utility model, through the setting of the first through hole and the second through hole of the support in the fixing assembly, the circuit board in the collecting assembly is arranged on the top of the battery module, the first through hole is sleeved outside the pole in the battery module, the temperature sensing collecting piece is fixed in the second through hole through the mounting sheet, both the fixing assembly, the battery module and the collecting assembly are fixedly connected with each other, the stability of the collecting assembly is guaranteed, the temperature of the battery cell is directly collected, and the fixing assembly, the battery module and the collecting assembly are fixedly connected with each other, the accuracy of the collected result is guaranteed.

[0021] In conclusion, the fixing mode of the fixing device for temperature sensing of the utility model is simple, the problem that temperature sensing cannot be fixed after the integrated cover plate tray is cancelled can be solved, and the collection cost of directly collecting the temperature of the battery cell is greatly saved.

[0022] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the written description and claims hereof. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0024] Figure 1 The structure diagram of the temperature sensing fixing device according to the embodiment of the present application is shown.

[0025] Figure 2 The structure diagram of the collecting assembly according to the embodiment of the present application is shown.

[0026] Figure 3 The structure diagram of the fixing assembly according to the embodiment of the present application is shown.

[0027] Figure 4 One of the partial views of the temperature sensing fixing device according to the embodiment of the present application is shown.

[0028] Figure 5 The three views of the pressing plate according to the embodiment of the present application are shown.

[0029] In the figure: 100, battery module; 110, pole; 120, pole piece; 200, collecting assembly; 210, circuit board; 220, nickel sheet; 230, mounting sheet; 231, first reinforcing plate; 232, second reinforcing plate; 233, heat conduction plate; 240, support plate; 300, fixing assembly; 310, support; 311, first through hole; 312, second through hole; 320, movable connecting sheet; 330, pressing plate; 331, buckle. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0031] In the description of the utility model, it is understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] As shown in Figure 1 The utility model discloses a fixed device of temperature sensing, including: acquisition component 200 and fixed component 300,

[0033] As shown in Figure 2 The acquisition component 200 includes circuit board 210, and the circuit on the circuit board 210 is provided with a plurality of branch circuits, the branch circuit is arranged on the mounting sheet 230, the branch circuit is communicated with temperature sensing acquisition piece, and the circuit board 210 is a flexible circuit board (FPC), which is used for collecting the temperature and voltage of the battery cell in the battery module.

[0034] As shown in Figure 3 The fixed component 300 includes support 310, and the support 310 is provided with first through hole 311 and second through hole 312.

[0035] The circuit board 210 is used for being arranged at the top of the battery module 100, and the pole 110 in the battery module 100 is located in the first through hole 311, and the connection of the fixed component 300 and the battery module 100 is completed, wherein the battery module 100 is composed of a plurality of battery cells, and the top of the battery module 100 is the top of the battery cell.

[0036] The temperature sensing acquisition piece is fixed in the second through hole 312 through the mounting sheet 230, the connection of the temperature sensing acquisition piece and the fixed component 300 is completed, and the temperature sensing acquisition piece and the battery module 100 are fixedly connected through the fixed component 300.

[0037] In some embodiments of the utility model, a plurality of nickel sheets 220 are symmetrically arranged on both sides of the circuit board 210, the nickel sheet 220 is attached to the pole sheet 120 in the battery module 100, the connection of the nickel sheet 220 and the pole sheet 120 is realized, and the voltage of the battery cell is collected through the nickel sheet 220, and the stability of the connection between the acquisition component 200 and the battery module 100 is improved.

[0038] Exemplarily, the nickel sheet 220 is welded on the pole sheet 120 by laser.

[0039] In some embodiments of the utility model, the height of the support 310 is same with the height of the pole 110, the pole 110 is welded with the outer frame forming the first through hole 311 through the pole piece 120, the fixed connection of the pole 110 and the outer frame forming the first through hole 311 is completed, and the limiting of the support 310 is realized.

[0040] As Figure 4 Indicated, in some embodiments of the utility model, the collection assembly 200 still includes first reinforcing plate 231, second reinforcing plate 232 and heat conduction plate 233,

[0041] As Figure 3 Indicated, the fixed assembly 300 still includes pressing plate 330,

[0042] As Figure 4 Indicated, the pressing plate 330, the first reinforcing plate 231, the mounting piece 230, the second reinforcing plate 232 and the heat conduction plate 233 are sequentially stacked, the heat conduction plate 233 is in contact with the top of the battery module 100, the second reinforcing plate 232 is oppositely arranged with the battery module 100, and the pressing plate 330 is fixed in the second through hole 312,

[0043] By the pressing plate 330 fixed in the second through hole 312, the pressing plate 330 presses the first reinforcing plate 231, and the pressure is transmitted to the heat conduction plate 233 through the first reinforcing plate 231, that is, the mounting piece 230 is pressed and fixed in the second through hole 312 through the pressing plate 330 of the fixed assembly 300, so that the temperature sensing collection piece in communication with the branch circuit on the mounting piece 230 is fixed in the second through hole 312, and the fixed connection of the temperature sensing collection piece and the battery module 100 is realized.

[0044] In some embodiments of the utility model, the first reinforcing plate 231 is provided with a temperature sensing point glue hole, and the temperature sensing collection piece and the branch circuit on the mounting piece 230 are fixedly connected through soldering, so that the temperature sensing collection piece is in communication with the branch circuit arranged on the mounting piece 230.

[0045] The temperature sensing collection piece is arranged in the temperature sensing point glue hole, temperature sensing point glue is supplemented in the temperature sensing point glue hole, after the temperature sensing point glue solidifies, the temperature sensing collection piece is fixed in the temperature sensing point glue hole, and the communication path of the temperature sensing collection piece and the branch circuit on the mounting piece 230 is protected, so that the stability of the temperature sensing collection piece and the stability of the collection process are ensured, and the temperature sensing collection piece is a temperature sensing sensor well known in the technical field, which will not be described here.

[0046] In some embodiments of the utility model, exemplarily, the material of the first reinforcing plate 231 and the second reinforcing plate 232 is epoxy resin.

[0047] The first reinforcing plate 231 is fixedly connected with the mounting sheet 230 through adhesion.

[0048] In some embodiments of the utility model, exemplarily, the second reinforcing plate 232 is a square sheet structure, which is pasted on the bottom of the mounting sheet 230 through back adhesion, and is used for protecting the mounting sheet 230.

[0049] In some embodiments of the utility model, the heat conduction plate 233 is in interference contact with the top of the battery module 100, and exemplarily, the material of the heat conduction plate 233 is silica gel pad, which has a high thermal conductivity coefficient, and the thickness is determined according to the compression curve of the silica gel pad and the Z-direction size chain.

[0050] Through the heat conduction of the heat conduction plate 233, the temperature of the top of the battery module 100, that is, the temperature of the battery cell, can be directly collected by the temperature sensor.

[0051] In some embodiments of the utility model, the width of the mounting sheet 230 needs to be much smaller than the width of the second through hole 312, so as to facilitate the installation of the pressing plate 330.

[0052] In some embodiments of the utility model, the pressing plate 330 is provided with a buckle 331, the buckle 331 is connected to the outer frame forming the second through hole 312, and the pressing plate 330 is fixed in the second through hole 312 through the buckle 331.

[0053] In some embodiments of the utility model, the fixing assembly 300 further comprises a movable connecting sheet 320, the movable connecting sheet 320 is detachably arranged in the first through hole 311, so that the first through hole 311 is compatible with the case that the sizes of the pole 110 in the battery module 100 are inconsistent.

[0054] In some embodiments of the utility model, exemplarily, the movable connecting sheet 320 is a plastic piece.

[0055] In some embodiments of the utility model, the collecting assembly 200 further comprises a supporting plate 240, the supporting plate 240 is arranged between the circuit board 210 and the battery module 100, and is used for filling the space between the circuit board 210 and the battery module 100, so as to support the circuit board 210 and ensure the stability of the circuit board 210.

[0056] Exemplarily, the supporting plate 240 and the circuit board 210 are fixedly connected through adhesion.

[0057] For example, the material of the support plate 240 is foam.

[0058] The support plate 240 is away from the mounting sheet 230, the nickel sheet 220, the bracket 310 and the position of the explosion-proof valve of the battery cell.

[0059] In some embodiments of the present application, the bracket 310 and the pressing plate 330 are made of materials with high strength, for example, the composite material of PC and ABS.

[0060] As shown in the drawings, in some embodiments of the present application, the pressing plate 330 is mirror image designed, which is convenient for assembly in the production site. Figure 5

[0061] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.​

Claims

1. A temperature-sensitive fixing device, characterized in that, include: Acquisition component (200) and fixing component (300); The acquisition component (200) includes a circuit board (210), the circuit on the circuit board (210) is provided with multiple branch circuits, the branch circuits are arranged on the mounting plate (230), and the branch circuits are connected to the temperature sensing acquisition element; The fixing component (300) includes a bracket (310), which has a first through hole (311) and a second through hole (312). The circuit board (210) is used to be disposed on the top of the battery module (100), the terminal post (110) in the battery module (100) is located in the first through hole (311), and the temperature sensing device is fixed in the second through hole (312) by the mounting piece (230).

2. The temperature-sensing fixing device according to claim 1, characterized in that, The circuit board (210) has several nickel sheets (220) symmetrically arranged on both sides, and the nickel sheets (220) are attached to the electrode (120) in the battery module (100).

3. The temperature-sensing fixing device according to claim 1, characterized in that, The pole post (110) is fixedly connected to the outer frame forming the first through hole (311).

4. The temperature-sensing fixing device according to claim 1, characterized in that, The acquisition component (200) further includes a first reinforcing plate (231), a second reinforcing plate (232), and a heat-conducting plate (233), and the fixing component (300) further includes a pressure plate (330); The pressure plate (330), the first reinforcing plate (231), the mounting plate (230), the second reinforcing plate (232), and the heat-conducting plate (233) are stacked in sequence. The heat-conducting plate (233) is in contact with the top of the battery module (100). The second reinforcing plate (232) is disposed opposite to the battery module (100). The pressure plate (330) is fixed in the second through hole (312).

5. The temperature-sensing fixing device according to claim 4, characterized in that, The first reinforcing plate (231) is provided with a temperature-sensitive adhesive hole, and the temperature-sensing acquisition element is fixed in the temperature-sensing adhesive hole.

6. The temperature-sensing fixing device according to claim 4, characterized in that, The heat-conducting plate (233) is in interference contact with the top of the battery module (100).

7. The temperature-sensing fixing device according to claim 4, characterized in that, The pressure plate (330) is provided with a buckle (331), which is connected to the outer frame forming the second through hole (312).

8. The temperature-sensing fixing device according to claim 1, characterized in that, The fixing component (300) further includes a movable connecting piece (320), which is detachably disposed within the first through hole (311).

9. A temperature-sensing fixing device according to any one of claims 1-8, characterized in that, The acquisition component (200) also includes a support plate (240), which is disposed between the circuit board (210) and the battery module (100).

10. A temperature-sensing fixing device according to claim 9, characterized in that, The support plate (240) is fixedly connected to the circuit board (210).

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