CN215893803U

CN215893803U - Battery pack temperature sensor

Info

Publication number: CN215893803U
Application number: CN202121602312.1U
Authority: CN
Inventors: 谢永刚; 柳元富; 欧阳胜红
Original assignee: Suzhou Weice Electronic Co ltd
Current assignee: Suzhou Weice Electronic Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-02-22
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses a battery pack temperature sensor which comprises an outer shell, wherein one end of the outer shell is provided with an opening, a thermistor is fixedly embedded in the outer shell, a groove matched with the thermistor is formed in the bottom of the outer shell, one end of the outer shell, which is far away from the thermistor, is provided with a slot, and a flexible circuit board is horizontally inserted in the slot. According to the battery pack temperature sensor, the waterproof ring used for wrapping the end part of the flexible circuit board is fixedly embedded in the slot, so that water vapor is prevented from entering the outer shell to cause short circuit or corrosion to internal metal components, a high-heat-conduction material is used, the flexible circuit board and the sensor are detachable, and the internal waterproof structure of the thermistor is designed.

Description

Battery pack temperature sensor

Technical Field

The utility model belongs to the technical field of temperature sensors, and particularly relates to a battery pack temperature sensor.

Background

Thermistors are a class of sensitive elements, and are classified into positive temperature coefficient thermistors and negative temperature coefficient thermistors according to the difference of temperature coefficients. The core component of the temperature sensor is a thermistor, and the existing battery pack temperature sensor formed by the thermistor has the defects of low sensitivity, no water resistance, complex structure, high assembling and disassembling difficulty, overlarge volume and the like. There is therefore a need for a solution to the above problems.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a battery pack temperature sensor that is waterproof, detachable, and small in size.

In order to achieve the purpose, the utility model provides a battery pack temperature sensor which is characterized by comprising an outer shell, wherein one end of the outer shell is provided with an opening, a thermistor is fixedly embedded in the outer shell, a groove matched with the thermistor is formed in the bottom of the outer shell, one end of the outer shell, which is far away from the thermistor, is provided with a slot, and a flexible circuit board is horizontally inserted in the slot.

In one example, a group of metal terminals is further horizontally laid at the bottom in the outer shell, and the two metal terminals are arranged in parallel.

In one example, the metal terminals are connected to two leads of the thermistor respectively through solder points.

In one example, one end of each of the two metal terminals, which is far away from the thermistor, is bent upwards to form a snap-like shape, and the two metal terminals are abutted against the lower end face of the flexible circuit board through the snap-like end portions, so that the thermistor forms an electrical loop.

In one example, the groove is filled with potting glue for waterproofing.

In one example, a waterproof ring used for wrapping the flexible circuit board is arranged in the slot, and water vapor is prevented from entering the outer shell from the end part of the flexible circuit board to cause short circuit or corrosion of metal components.

In one example, the two pins of the thermistor are coated with heat conducting paste for improving the heat conductivity of the thermistor.

The battery pack temperature sensor provided by the utility model can bring the following beneficial effects:

1. the waterproof ring fixedly embedded in the slot and used for wrapping the end part of the flexible circuit board prevents water vapor from entering the outer shell to cause short circuit or corrosion to internal metal components.

2. A high thermal conductive material is used.

3. The flexible circuit board is detachable with the sensor.

4. And (4) designing a waterproof structure in the thermistor.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a side view of a battery pack temperature sensor of the present invention;

FIG. 2 is a top view of a battery pack temperature sensor of the present invention;

fig. 3 is a left side cross-sectional view of a battery pack temperature sensor of the present invention.

Detailed Description

In order to more clearly explain the overall concept of the utility model, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for ease of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description of the present specification, reference to the description of the terms "one aspect," "some aspects," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

The first embodiment is as follows: the utility model provides a group battery temperature sensor, it includes that one end is equipped with the open-ended shell body, the casing internal fixation gomphosis has thermistor, the recess with thermistor looks adaptation is seted up to the bottom in the shell body, the slot has been seted up to thermistor's one end is kept away from to the shell body, level is inserted and is equipped with flexible circuit board in the slot, a set of metal terminal has still been laid to the bottom level in the shell body, two metal terminals are parallel arrangement, two pins of thermistor are connected through the solder point respectively to the metal terminal, the one end kickup that thermistor was kept away from to two metal terminals is class buckle form, the tip that two metal terminals were through class buckle form and flexible circuit board lower terminal surface looks butt, make thermistor form electric property return circuit, fill in the recess and be used for waterproof embedment glue, heat conduction cream has been scribbled on thermistor's two pins, a heat conductivity for improve thermistor.

In the embodiment, a waterproof ring is not used, so that water vapor can enter from the connection part of the flexible circuit board and the outer shell, and short circuit or corrosion is caused on metal components.

Example two: a battery pack temperature sensor comprises a shell body with an opening at one end, a thermistor is fixedly embedded in the shell body, a groove matched with the thermistor is formed in the bottom in the shell body, an inserting groove is formed in the end, away from the thermistor, of the shell body, a flexible circuit board is horizontally inserted in the inserting groove, a group of metal terminals are horizontally laid on the bottom in the shell body, the two metal terminals are arranged in parallel, the metal terminals are respectively connected with two pins of the thermistor through soldering tin points, the ends, away from the thermistor, of the two metal terminals are bent upwards to be in a buckle-like shape, the two metal terminals are abutted to the lower end face of the flexible circuit board through the buckle-like end portions to enable the thermistor to form an electric loop, waterproof potting glue is filled in the groove, a waterproof cover is arranged at the joint of the shell body and the flexible circuit board, and heat-conducting paste is smeared on the two pins of the thermistor, for improving the thermal conductivity of the thermistor.

In the embodiment, the waterproof cover is used, and water vapor can enter the outer shell from a gap between the waterproof cover and the flexible circuit board to cause short circuit or corrosion to metal components.

Example three: a battery pack temperature sensor comprises a shell body with an opening at one end, a thermistor is fixedly embedded in the shell body, a groove matched with the thermistor is formed in the bottom in the shell body, an inserting groove is formed in the end, away from the thermistor, of the shell body, a flexible circuit board is horizontally inserted in the inserting groove, a group of metal terminals are horizontally laid on the bottom in the shell body and are arranged in parallel, the metal terminals are respectively connected with two pins of the thermistor through soldering tin points, a group of connecting piece hard points are arranged at the end, away from the thermistor, of the two metal terminals, the two metal terminals are abutted to the lower end face of the flexible circuit board through the connecting piece hard points to enable the thermistor to form an electric loop, waterproof potting glue is filled in the groove, a waterproof cover is arranged at the connecting position of the shell body and the flexible circuit board, and heat conducting paste is coated on the two pins of the thermistor, for improving the thermal conductivity of the thermistor.

In the embodiment, the connecting sheet hard point is used as the connecting end point of the thermistor and the flexible circuit board, and a gap exists after cold and hot shock, so that the risk of connection failure exists.

As shown in fig. 1 to 3, an embodiment of the present invention provides a battery pack temperature sensor, which includes an outer casing 1 having an opening at one end, a thermistor 2 fixedly embedded in the outer casing 1, a groove 11 adapted to the thermistor formed in the bottom of the outer casing 1, a slot 12 formed in the end of the outer casing 1 away from the thermistor 2, a flexible circuit board 3 horizontally inserted in the slot 12, a set of metal terminals 4 horizontally laid on the bottom of the outer casing 1, the two metal terminals 4 being arranged in parallel, the metal terminals 4 being respectively connected to two pins of the thermistor 2 through soldering points 41, one end of each of the two metal terminals 4 away from the thermistor 2 being bent upward to form a snap-like shape, the two metal terminals 4 abutting against the lower end surface of the flexible circuit board 3 through the snap-like end portions to form an electrical circuit of the thermistor 2, a potting glue 13 for water prevention being filled in the groove 11, be provided with in the slot 12 and be used for wrapping up the waterproof circle 121 of flexible circuit board 3, prevent that steam from getting into shell body 1 from flexible circuit board 3 tip in, make metal components and parts short circuit or corrosion, scribble the heat conduction cream on thermistor 2's two pins for improve thermistor 2's heat conductivity.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a group battery temperature sensor, its characterized in that is equipped with the open-ended shell body including one end, the casing internal fixation gomphosis has thermistor, the bottom seted up in the shell body with the recess of thermistor looks adaptation, the shell body is kept away from thermistor's one end has seted up the slot, the level is inserted and is equipped with flexible circuit board in the slot.

2. The battery pack temperature sensor according to claim 1, wherein a set of metal terminals is horizontally laid on the bottom of the outer casing, and the two metal terminals are arranged in parallel.

3. The battery pack temperature sensor according to claim 2, wherein the metal terminals are connected to the two leads of the thermistor by solder points, respectively.

4. The battery pack temperature sensor according to claim 2, wherein the ends of the two metal terminals, which are away from the thermistor, are bent upward to form a snap-like shape, and the two metal terminals are abutted against the lower end surface of the flexible circuit board through the snap-like end portions.

5. The battery pack temperature sensor according to claim 1, wherein the groove is filled with potting glue for waterproofing.

6. The battery pack temperature sensor according to claim 1, wherein a waterproof ring is disposed in the slot for wrapping the flexible circuit board.

7. The battery pack temperature sensor according to claim 1, wherein the thermistor has thermal paste applied to both leads.