Module integrated temperature acquisition module

Abstract

The utility model relates to a module integrated temperature acquisition module, which comprises a battery cell, and an acquisition module and an aluminum bar which are arranged on the surface of the battery cell, the acquisition module comprises a heat-conducting silica gel layer arranged on the surface of the battery cell, a heat-conducting glue layer arranged on the upper surface of the heat-conducting silica gel layer, a nickel sheet arranged on the upper surface of the heat-conducting glue layer, an FPC arranged on the upper surface of the nickel sheet and an FR4 reinforcing plate arranged on the upper surface of the FPC, and a placement hole is formed in the part, between the FPC and the heat-conducting glue layer, of the nickel sheet; a temperature sensor is placed in the placing hole, the upper surface of the temperature sensor abuts against the FPC, the lower surface of the temperature sensor abuts against the heat conduction glue layer, and one end of the nickel sheet is connected with the aluminum bar. According to the utility model, temperature and voltage acquisition points are integrated, and a temperature sensing position is not independently arranged, so that part of space requirements are reduced; and meanwhile, the temperature of the surface of the battery cell can be directly collected, and the temperature collection is faster and more accurate.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a module-integrated temperature acquisition module. Background Technology

[0002] With the continuous development of power battery technology, the automation and modularization of power battery system packaging have gradually become the mainstream of development. Among the power battery systems, the battery modules are the most important. Currently, battery modules basically collect voltage and temperature information through connectors and transmit the collected battery module status information to the battery management system connected to the connector.

[0003] In recent years, as clients have varying requirements for the fixing and acquisition methods of battery module temperature sensors, the methods for fixing and acquiring temperature sensors have become more diverse. However, existing designs that integrate voltage and temperature sensing can only acquire the heat transferred by the nickel plate and the heat around the sensor. The heat transfer process is relatively long, and the acquired temperature is not very accurate.

[0004] Therefore, it is necessary to propose an integrated temperature acquisition module that can meet the needs of customer structural design, integrate voltage and temperature signal acquisition points together, reduce some space requirements, and directly acquire the temperature of the cell surface. Summary of the Invention

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a modular integrated temperature acquisition module, which integrates temperature and voltage acquisition points together, eliminating the need for separate temperature sensing positions and reducing space requirements; at the same time, it can directly acquire the temperature of the battery cell surface, making temperature acquisition faster and more accurate.

[0006] The objective of this utility model is achieved through the following technical solution: a modular integrated temperature acquisition module, comprising a battery cell, and an acquisition module and an aluminum bar disposed on the surface of the battery cell. The acquisition module includes a thermally conductive silicone layer disposed on the surface of the battery cell, a thermally conductive adhesive layer disposed on the upper surface of the thermally conductive silicone layer, a nickel sheet disposed on the upper surface of the thermally conductive adhesive layer, an FPC disposed on the upper surface of the nickel sheet, and an FR4 reinforcing plate disposed on the upper surface of the FPC. A placement hole is provided on the nickel sheet at the position between the FPC and the thermally conductive adhesive layer. A temperature sensor is placed in the placement hole. The upper surface of the temperature sensor abuts against the FPC, and the lower surface of the temperature sensor abuts against the thermally conductive adhesive layer. One end of the nickel sheet is connected to the aluminum bar.

[0007] Furthermore, the surface of the battery cell is provided with a limiting boss, a bracket is provided at the limiting boss, the bracket is provided with a placement groove, and the aluminum bar is fixed in the placement groove.

[0008] Furthermore, the bottom of the placement groove is provided with an installation hole, which is fitted onto the limiting boss.

[0009] Furthermore, the aluminum bar is provided with a set of limiting holes, and a limiting post is provided in the placement groove corresponding to the limiting holes, with the limiting holes sleeved on the limiting posts.

[0010] Furthermore, the bracket has a clearance hole at the contact point between the acquisition module and the battery cell, and the acquisition module is disposed in the clearance hole and extends to the surface of the battery cell.

[0011] Furthermore, the thermally conductive adhesive layer is a UV thermally conductive adhesive layer.

[0012] Furthermore, at least two battery cells are provided, and the two ends of the bracket are respectively fixed to the limiting bosses of the two battery cells through mounting holes, and the acquisition module is fixed to the surface of one of the battery cells.

[0013] The beneficial effects of this utility model are as follows: The modular integrated temperature acquisition module of this utility model integrates the temperature and voltage acquisition points together, eliminating the need for separate temperature sensing positions and reducing space requirements; at the same time, it can directly acquire the temperature of the battery cell surface, making temperature acquisition faster and more accurate. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 This is a first exploded view of the present invention;

[0016] Figure 3 This is a second exploded view of the present invention;

[0017] Figure 4 This is a structural schematic diagram of the bracket of this utility model;

[0018] Figure 5 This is an exploded view of the acquisition module of this utility model;

[0019] Figure 6 yes Figure 5 A breakdown diagram of the acquisition module from another perspective.

[0020] The attached diagram is labeled as follows: 1-battery cell, 11-limiting boss, 2-acquisition module, 21-thermal conductive silicone layer, 22-thermal conductive adhesive layer, 23-nickel sheet, 231-placement hole, 24-FPC, 25-FR4 reinforcing plate, 26-temperature sensor, 3-aluminum bar, 31-limiting hole, 4-bracket, 41-placement slot, 411-mounting hole, 412-limiting post, 42-avoidance hole. Detailed Implementation

[0021] To facilitate understanding by those skilled in the art, the following description is provided in conjunction with embodiments and appendices. Figure 1-6 The present invention will be further described below. The content mentioned in the embodiments is not intended to limit the present invention.

[0022] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0023] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0026] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0027] See Figure 1-6 An integrated temperature acquisition module for a module includes a battery cell, an acquisition module and an aluminum bar disposed on the surface of the battery cell. The acquisition module includes a thermally conductive silicone layer disposed on the surface of the battery cell, a thermally conductive adhesive layer disposed on the upper surface of the thermally conductive silicone layer, a nickel sheet disposed on the upper surface of the thermally conductive adhesive layer, an FPC disposed on the upper surface of the nickel sheet, and an FR4 reinforcing plate disposed on the upper surface of the FPC. A placement hole is formed in the nickel sheet at the position between the FPC and the thermally conductive adhesive layer. A temperature sensor is placed in the placement hole. The upper surface of the temperature sensor abuts against the FPC, and the lower surface of the temperature sensor abuts against the thermally conductive adhesive layer. One end of the nickel sheet is connected to the aluminum bar.

[0028] This embodiment's integrated temperature acquisition module combines temperature and voltage acquisition points, eliminating the need for separate temperature sensing locations and reducing space requirements. It also directly acquires the temperature of the battery cell surface, resulting in faster and more accurate temperature measurement. When setting up the temperature sensor, ensure the sensing surface faces downwards towards the battery cell surface. The voltage signal is transmitted through the aluminum busbar and nickel plate, enabling voltage signal acquisition. The temperature sensor is positioned in the center of the nickel plate (placement hole), simultaneously acquiring heat transferred from the aluminum busbar through the nickel plate. A 0.2mm FR4 reinforcing plate is added to the back of the temperature sensor to prevent damage from external forces. UV thermally conductive adhesive is applied to the surface of the temperature sensor and nickel plate to form a thermally conductive adhesive layer for protection. Thermally conductive silicone is then applied to the surface of the thermally conductive adhesive layer for buffering and heat transfer from the battery cell surface (the thermally conductive silicone needs to be backed with 3M adhesive on one side for easy pre-fixation to the FPC). Furthermore, the aluminum busbar and nickel plate are connected using laser welding to achieve voltage signal acquisition and also to fix the temperature sensor. The stress of the nickel plate ensures that the thermally conductive silicone layer adheres tightly to the battery cell surface.

[0029] In this embodiment, the surface of the battery cell is provided with a limiting boss, a bracket is provided at the limiting boss, the bracket is provided with a placement groove, and the aluminum bar is fixed in the placement groove; the bottom of the placement groove is provided with an installation hole, which is fitted onto the limiting boss to facilitate fixing the bracket and the battery cell.

[0030] In this embodiment, the aluminum bar is provided with a set of limiting holes, and a limiting post is provided in the placement groove corresponding to the limiting holes, with the limiting holes sleeved on the limiting posts.

[0031] In this embodiment, the bracket has a clearance hole at the contact point between the acquisition module and the battery cell, and the acquisition module is disposed in the clearance hole and extends to the surface of the battery cell.

[0032] In this embodiment, the bracket supporting the aluminum battery and the FPC should have a clearance hole at the temperature sensing position to allow the thermally conductive silicone layer on the FPC to fully contact the battery cell surface after the client has installed the CCS assembly.

[0033] In this embodiment, the thermally conductive adhesive layer is a UV thermally conductive adhesive layer.

[0034] In this embodiment, at least two battery cells are provided, and the two ends of the bracket are respectively fixed to the limiting bosses of the two battery cells through mounting holes. The acquisition module is fixed to the surface of one of the battery cells.

[0035] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. A modular integrated temperature acquisition module, characterized in that: The device includes a battery cell, a data acquisition module and an aluminum bar disposed on the surface of the battery cell. The data acquisition module includes a thermally conductive silicone layer disposed on the surface of the battery cell, a thermally conductive adhesive layer disposed on the upper surface of the thermally conductive silicone layer, a nickel sheet disposed on the upper surface of the thermally conductive adhesive layer, an FPC disposed on the upper surface of the nickel sheet, and an FR4 reinforcing plate disposed on the upper surface of the FPC. The nickel sheet has a placement hole at the position between the FPC and the thermally conductive adhesive layer. A temperature sensor is placed in the placement hole. The upper surface of the temperature sensor abuts against the FPC, and the lower surface of the temperature sensor abuts against the thermally conductive adhesive layer. One end of the nickel sheet is connected to the aluminum bar.

2. The modular integrated temperature acquisition module according to claim 1, characterized in that: The surface of the battery cell is provided with a limiting boss, a bracket is provided at the limiting boss, the bracket is provided with a placement groove, and the aluminum bar is fixed in the placement groove.

3. The modular integrated temperature acquisition module according to claim 2, characterized in that: The bottom of the placement groove is provided with an installation hole, which is fitted onto the limiting boss.

4. The modular integrated temperature acquisition module according to claim 2, characterized in that: The aluminum bar is provided with a set of limiting holes, and a limiting post is provided in the placement groove corresponding to the limiting holes, with the limiting holes sleeved on the limiting posts.

5. The modular integrated temperature acquisition module according to claim 2, characterized in that: The bracket has a clearance hole at the contact point between the acquisition module and the battery cell. The acquisition module is disposed in the clearance hole and extends to the surface of the battery cell.

6. The modular integrated temperature acquisition module according to claim 1, characterized in that: The thermally conductive adhesive layer is a UV thermally conductive adhesive layer.

7. The modular integrated temperature acquisition module according to claim 3, characterized in that: At least two battery cells are provided, and the two ends of the bracket are respectively fixed to the limiting bosses of the two battery cells through mounting holes. The acquisition module is fixed to the surface of one of the battery cells.

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