CN216250865U - Temperature detection device and battery module - Google Patents

Abstract

The present application provides a temperature detection device and a battery module, wherein the temperature detection device includes a temperature sensor and a signal transmission component. The signal transmission assembly includes: a first connection terminal and a second connection terminal. The first connecting terminal is provided with an accommodating groove and a clamping groove communicating with the accommodating groove. The second connection terminal is provided with an elastic piece, the second connection terminal is inserted into the accommodating groove, and the elastic piece is snapped into the card slot. The first connection terminal or the second connection terminal is electrically connected to the electrode end of the temperature sensor. The temperature detection device provided by the present application can realize the rapid disassembly and installation of the temperature sensor through the clamping structure between the first connection terminal and the second connection terminal, thereby greatly shortening the time for replacing or repairing the temperature sensor. In addition, the locking method of the elastic sheet and the card slot is simple, and the disassembly is convenient, so that a violent operation is not required in the process of replacing the temperature sensor, thereby ensuring the reliability of the temperature sensor.

Description

Temperature detection device and battery module

technical field

The present application relates to the field of battery technology, and in particular, to a temperature detection device and a battery module having the temperature detection device.

Background technique

The temperature sensor mainly has the following three fixing methods in the power battery system:

Method 1, the temperature sensor package is welded to the voltage and temperature acquisition component. In this fixing method, when the temperature sensor fails, the faulty temperature sensor needs to be disassembled from the voltage and temperature acquisition component, and then the new temperature sensor is manually welded to the voltage. On the temperature acquisition component, this method has multiple failure modes. The first is that the welding conductive foreign matter is easily left in the battery pack during welding, leaving the hidden danger of short circuit of the battery cell; the second is that the welding process cannot be guaranteed, according to after-sales personnel. The level of professionalism determines the quality of the welding; the third is that the high temperature of the welding has the risk of damaging the new temperature sensor.

Method 2: The temperature sensor chip is encapsulated into the resin water dropper between two adjacent cells with resin. This welding method cannot be directly repaired in the client or in the 4S shop. Professional equipment is required for welding. This welding method makes The voltage and temperature acquisition components need to be replaced as a whole, and the maintenance workload is huge.

Method 3: The temperature sensor is integrated and connected to the acquisition component, and the temperature sensor is connected to the acquisition board through wires. However, this form requires a large acquisition space, and has a certain dependence on the layout design of the system cell group, which cannot be realized in batches. application.

Utility model content

The purpose of the present application is to provide a temperature detection device and a battery module with a simple structure, convenient disassembly, and convenient maintenance.

In order to achieve the above object, an embodiment of the first aspect of the present application provides a temperature detection device, comprising: a temperature sensor; and a signal transmission component, the signal transmission component is electrically connected to the electrode end of the temperature sensor; wherein, the The signal transmission assembly includes: a first connection terminal, which is provided with an accommodating slot and a card slot communicating with the accommodating slot; and a second connection terminal, which is provided with an elastic sheet, The second connection terminal is inserted into the accommodating slot, and the elastic sheet is clipped into the card slot; the first connection terminal or the second connection terminal is electrically connected to the electrode end of the temperature sensor.

Compared with the prior art, the above technical solution has the following advantages: through the clamping structure between the first connection terminal and the second connection terminal, the rapid disassembly and installation of the temperature sensor can be realized, thereby greatly shortening the replacement or maintenance. The temperature sensor takes a long time, which improves the maintenance efficiency of the temperature sensor and increases the market competitiveness of the product; in addition, the locking method of the shrapnel and the card slot is simple, and the disassembly is convenient, so that no violent operation is required in the process of replacing the temperature sensor. Thus, the reliability of the temperature sensor in use is ensured, and the probability of failure of the replaced temperature sensor is reduced.

An embodiment of the second aspect of the present application provides a battery module including the above temperature detection device.

Compared with the prior art, the above technical solution has the following advantages: when the temperature sensor fails and needs to be replaced, it can achieve rapid and non-destructive disassembly, avoid damaging the battery cells, conductive bars or other temperature sensor connection structures in the battery module, and ensure that the Complete battery module.

Description of drawings

The following drawings are only intended to illustrate and explain the present application schematically, and do not limit the scope of the present application. in:

1 is a schematic structural diagram of a first embodiment of the temperature detection device described in the present application;

Fig. 2 is the exploded structure schematic diagram of the temperature detection device shown in Fig. 1;

3 is a schematic structural diagram of a second embodiment of the temperature detection device described in the present application;

Fig. 4 is the cross-sectional structure schematic diagram of the temperature detection device shown in Fig. 3;

5 is a schematic structural diagram of a third embodiment of the temperature detection device described in the present application;

6 is a schematic cross-sectional structural diagram of the first embodiment of the temperature detection device shown in FIG. 5;

7 is a schematic cross-sectional structural diagram of a second embodiment of the temperature detection device shown in FIG. 5;

FIG. 8 is a schematic structural diagram of the first connection terminal described in the present application;

9 is a schematic cross-sectional structural diagram of a third embodiment of the temperature detection device shown in FIG. 5;

10 is a schematic structural diagram of a fourth embodiment of the temperature detection device described in the present application;

FIG. 11 is a schematic structural diagram of a fifth embodiment of the temperature detection device described in this application.

Description of reference numbers:

10, temperature sensor; 20, signal transmission assembly; 21, first connection terminal; 22, accommodating slot; 23, card slot; 24, second connection terminal; 25, shrapnel; 251, clamping part; 252, pressing part; 26. Conductor; 27. Pressing sheet; 30. Outer shell; 31. Plug-in port; 32. Demolition window;

Detailed ways

The present application will be further described in detail below through the accompanying drawings and embodiments. From these descriptions, the features and advantages of the present application will become more apparent.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict with each other. The following discussion provides various embodiments of the present application. Although each embodiment represents a single combination of the application, the various embodiments of the application may be substituted, or combined in combination, and thus the application may also be considered to encompass all possible combinations of the same and/or different embodiments recited. Thus, if one embodiment includes A, B, C and another embodiment includes a combination of B and D, then the application should also be considered to include all other possible combinations including one or more of A, B, C, D example, although this example may not be explicitly described in the following content. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict with each other.

As shown in FIG. 1 and FIG. 2 , the temperature detection apparatus according to the embodiment of the first aspect of the present application includes: a temperature sensor 10 and a signal transmission component 20 .

The temperature sensor 10 is used to detect the temperature of the monitoring target; with the ground, the temperature sensor 10 is used to detect the temperature inside the battery.

The signal transmission component 20 is electrically connected to the electrode end of the temperature sensor 10 , and the signal transmission component 20 is used for transmitting the temperature signal sent by the temperature sensor 10 .

As shown in FIG. 2 , the signal transmission assembly 20 includes: a first connection terminal 21 and a second connection terminal 24 .

The first connection terminal 21 is provided with an accommodating groove 22 and a clamping groove 23 communicating with the accommodating groove 22 . The first connection terminal 21 is connected to the temperature sensor 10 by welding, crimping, or thermal fusion.

The second connection terminal 24 is provided with an elastic piece 25 , the second connection terminal 24 is inserted into the accommodating slot 22 , and the elastic piece 25 is snapped into the card slot 23 . When an external force is applied, the elastic piece 25 is deformed, and when the external force is removed, the elastic piece 25 recovers. Specifically, during the process of inserting the second connection terminal 24 into the accommodating slot 22, the elastic piece 25 is deformed by being squeezed by the side wall of the accommodating slot 22. When the second connecting terminal 24 is inserted in place, the elastic piece 25 enters the slot 23, and the elastic piece 25 loses the compression of the side wall of the accommodating slot 22 and recovers, and the elastic piece 25 is snapped into the locking slot 23, so that the first connection terminal 21 and the second connection terminal 24 are fixedly connected.

The first connection terminal 21 or the second connection terminal 24 is electrically connected to the electrode end of the temperature sensor 10 . In a specific embodiment of the present application, as shown in FIG. 1 and FIG. 2 , the first connection terminal 21 is electrically connected to the electrode end of the temperature sensor 10 , and the second connection terminal 24 is connected to the wire 26 or copper tape by crimping, welding or other connection methods.

The temperature detection device provided by the present application can realize the rapid disassembly and installation of the temperature sensor 10 through the clamping structure between the first connection terminal 21 and the second connection terminal 24, thereby greatly shortening the time required for replacing or maintaining the temperature sensor 10. , which can be replaced at the customer's site, thereby improving the maintenance efficiency of the temperature sensor 10 and increasing the market competitiveness of the product.

In addition, the locking method of the elastic sheet 25 and the card slot 23 is simple and easy to disassemble, so that no violent operation is required in the process of replacing the temperature sensor 10, thereby ensuring the reliability of the temperature sensor 10 and reducing the temperature sensor 10 after replacement. probability of failure.

As shown in FIG. 3 , in an embodiment of the present application, the temperature detection device further includes: a casing 30 .

A socket 31 is provided on the side wall of the housing 30 , the temperature sensor 10 is arranged in the housing 30 , and the signal transmission assembly 20 is connected to the temperature sensor 10 through the socket 31 . The shape of the housing 30 can be square, circular, triangular, etc. Those skilled in the art can select the shape of the housing 30 according to specific requirements.

The housing 30 protects the temperature sensor 10, thereby effectively preventing the temperature sensor 10 from being subjected to external force during the installation process and reducing the reliability of the temperature sensor 10, that is, the reliability of the temperature sensor 10 is ensured, and the service life of the temperature sensor 10 is extended. . In addition, the housing 30 can also reduce or block the contact between the temperature sensor 10 and the external water vapor, thereby reducing the influence of water vapor on the reliability of the temperature sensor 10 , thereby ensuring the reliability of the temperature sensor 10 .

As shown in FIG. 4 , in one embodiment of the present application, a sealing portion 50 is provided in the housing 30 , and the sealing portion 50 fills the inner space of the housing 30 and wraps the temperature sensor 10 and at least part of the signal transmission assembly 20 . In a specific embodiment of the application, the sealing part 50 is a resin part or a cured glue part.

The sealing part 50 forms a sealed space inside the casing 30, so as to prevent dust and water from entering the casing 30 and affecting the reliability of the connection between the first connection terminal 21 and the second connection terminal 24, that is, the sealing part 50 plays a role. Dustproof and waterproof, thus ensuring the reliability of the connection between the first connection terminal 21 and the second connection terminal 24; in addition, it also reduces the influence of water vapor and dust on the reliability of the temperature sensor 10, thereby ensuring the temperature sensor 10. reliability of use.

As shown in FIG. 5 and FIG. 6 , in an embodiment of the present application, the first connection terminal 21 is located in the housing 30 , and the side wall of the housing 30 on the side of the socket 31 is provided with a dismounting window 32 , and the dismounting window 32 Corresponding to the shrapnel 25. The disassembly window 32 corresponding to the elastic piece 25 refers to that the disassembly window 32 and the elastic piece 25 are disposed opposite to each other, and the disassembly tool can contact the elastic piece 25 after passing through the disassembly window 32 .

The junction of the first connection terminal 21 and the second connection terminal 24 is located in the casing 30, and the casing 30 can reduce the probability of dust and liquid entering the junction of the first connection terminal 21 and the second connection terminal 24, that is, the casing 30 acts as a dustproof The waterproof function ensures the reliability of the connection between the first connection terminal 21 and the second connection terminal 24 . In addition, when the temperature sensor 10 needs to be replaced, the dismantling tool passes through the disassembly window 32 and presses against the elastic sheet 25, and the elastic sheet 25 is deformed by applying an external force to the elastic sheet 25 by the dismantling tool, so as to disassemble the second connection terminal 24 from the second connection terminal 24. The terminal 24 is disengaged, and the above-mentioned disassembly structure is simple and convenient to disassemble.

As shown in FIG. 2 , in an embodiment of the present application, the card slot 23 penetrates the side wall of the first connection terminal 21 .

The dismantling tool passes through the dismantling window 32 and then extends into the slot 23 and directly presses against the elastic sheet 25. The external force exerted by the dismantling tool can directly act on the elastic sheet 25, so that the elastic sheet 25 is more easily deformed, so that the second connection terminal can be easily deformed. 24 is disengaged from the second connection terminal 24 .

As shown in FIGS. 7 and 8 , in an embodiment of the present application, a pressing piece 27 is provided in the card slot 23 , one end of the pressing piece 27 is connected to the first side wall of the card slot 23 , and the pressing piece 27 The other end of the side wall extends to the second side wall corresponding to the first side wall, and there is a gap between the second side wall and the second side wall. The snap-in position, the shrapnel 25 is snapped into the snap-in position.

The dismantling tool passes through the dismantling window 32 and is pressed against the pressing piece 27. The external force exerted by the dismantling tool acts on the pressing piece 27, and the pressing piece 27 squeezes the elastic piece 25 under the action of the external force, so that the elastic piece 25 is deformed. , so as to disengage the second connection terminal 24 from the second connection terminal 24 . After the elastic piece 25 is inserted into the card slot 23, the elastic piece 25 is located in the engaging position, and there is no pressure between the elastic piece 25 and the pressing piece 27. The pressing piece 27 protects the elastic piece 25 and can effectively prevent the elastic piece 25 from being accidentally touched during the assembly process. A situation occurs that causes the second connection terminal 24 to come out of the second connection terminal 24 .

As shown in FIG. 9 , in an embodiment of the present application, the elastic piece 25 includes a clip portion 251 and a pressing portion 252 .

After the dismantling tool passes through the dismantling window 32, it directly presses on the pressing portion 252, and the pressing portion 252 drives the clip portion 251 to deform, so that the clip portion 251 is released from the clip slot 23, and the external force exerted by the dismantling tool can directly Acting on the elastic piece 25 , the elastic piece 25 is more easily deformed, so that the second connection terminal 24 can be pulled out from the second connection terminal 24 .

As shown in FIG. 10 , in an embodiment of the present application, the temperature detection device further includes: a heat conducting sheet 40 .

The thermally conductive sheet 40 is provided on the outer surface of the housing 30 . Specifically, the casing may be disposed on the bottom wall, top wall or side wall of the casing; the thermally conductive sheet 40 is a copper sheet, an aluminum sheet, a copper alloy sheet or an aluminum alloy sheet. The temperature detection device can be connected with cells, conductive bars or bus bars by means of gluing, plugging and clipping to form thermal conductivity collection.

The disposition of the heat-conducting sheet 40 can quickly transfer the heat to the casing 30, so that the temperature sensor 10 can quickly detect the temperature of the monitoring target, thereby improving the corresponding speed and accuracy of the temperature detecting device, and increasing the product quality. Market Competitiveness.

As shown in FIG. 11 , in an embodiment of the present application, one end of the thermally conductive sheet 40 is fixedly connected to the housing 30 , and the other end of the thermally conductive sheet 40 protrudes from the outer surface of the housing 30 .

The portion of the thermally conductive sheet 40 protruding from the outer surface of the housing 30 is a welding portion, and the welding portion is connected to the monitoring target by welding, and the welding method has good connection performance and high connection reliability. Specifically, the welding part is welded with the electrode or the bus bar of the cell to form a heat conduction collection.

The battery module provided by the embodiment of the second aspect of the present application includes the above temperature detection device. Specifically, the battery module further includes a bus bar and a battery cell. The temperature detection device is connected to the cell, the electrode of the cell, or the bus bar.

The battery module provided by the present application, when the temperature sensor fails and needs to be replaced, realizes rapid and non-destructive disassembly, avoids damage to the battery cells, conductive bars or other temperature sensor connection structures in the battery module, and ensures the integrity of the battery module.

In the description of the present application, it should be noted that the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise expressly specified and limited.

In the description of the present application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be construed in a broad sense. The term "plurality" refers to two or more, unless expressly limited otherwise. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

The present application has been described above with reference to the preferred embodiments, but these embodiments are only exemplary and only serve for illustrative purposes. On this basis, various substitutions and improvements can be made to the present application, which all fall within the protection scope of the present application.

Claims (10)

1. a temperature detection device, is characterized in that, comprises: temperature sensor; and a signal transmission component, the signal transmission component is electrically connected with the electrode end of the temperature sensor; Wherein, the signal transmission component includes: a first connection terminal, the first connection terminal is provided with an accommodating groove and a clamping groove communicating with the accommodating groove; and a second connection terminal, an elastic sheet is provided on the second connection terminal, the second connection terminal is inserted into the accommodating groove, and the elastic sheet is snapped into the card groove; The first connection terminal or the second connection terminal is electrically connected to the electrode end of the temperature sensor. 2. The temperature detection device according to claim 1, further comprising: A casing, a plug port is provided on the side wall of the casing, the temperature sensor is arranged in the casing, and the signal transmission component is connected to the temperature sensor through the plug port. 3. The temperature detection device according to claim 2, characterized in that, The first connection terminal is located in the casing, and a side wall of the casing on one side of the plug-in port is provided with a disassembly window, and the disassembly window is disposed correspondingly to the elastic piece. 4. The temperature detection device according to claim 3, characterized in that, The card slot penetrates through the side wall of the first connection terminal. 5. The temperature detection device according to claim 3, characterized in that, The elastic piece includes a clip part and a pressing part, the clip part is clipped into the clip slot, and the pressing part extends out of the accommodating slot. 6. The temperature detection device according to claim 2, further comprising: A thermally conductive sheet is provided on the outer surface of the housing. 7. The temperature detection device according to claim 6, characterized in that, One end of the heat-conducting sheet is fixedly connected to the casing, and the other end of the heat-conducting sheet extends out of the outer surface of the casing. 8. The temperature detection device according to claim 2, characterized in that, The casing is provided with a sealing part, the sealing part fills the inner space of the casing and wraps the temperature sensor and at least part of the signal transmission component. 9. The temperature detection device according to claim 8, characterized in that, The sealing part is a resin part or a cured glue part. 10 . A battery module, characterized by comprising the temperature detection device according to any one of claims 1 to 9 . 11 .

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