Harvesting assembly and battery system

Abstract

The utility model discloses a kind of acquisition assembly and battery system.A kind of acquisition assembly includes support, temperature acquisition line, voltage acquisition line and sampling connector.Support is provided with through-hole.Temperature acquisition line is arranged in support, temperature acquisition line is electrically connected with temperature probe, temperature probe is arranged in through-hole, and can be contacted with electric core stack assembly.Voltage acquisition line is arranged in support, voltage acquisition line is electrically connected with sampling conductive piece, sampling conductive piece is used to collect the voltage of electric core stack assembly, sampling connector is electrically connected with temperature acquisition line and voltage acquisition line respectively, and sampling connector is used to connect battery management system.The acquisition assembly can collect the voltage and temperature of electric core stack assembly, can avoid using busbar, thereby save the use of aluminum or copper etc. Busbar material, reduce material cost, and then reduce the cost of entire battery system.

Description

Technical Field

[0001] This utility model relates to the technical field of battery devices, and in particular to a data acquisition component and battery system. Background Technology

[0002] The pouch cell has metal positive and negative tabs that serve as electrical connections in the battery system. Currently, the tabs are often connected by welding. First, the pouch cell stack is placed on a fixture, tab supports are fitted over the tabs, the tabs are inserted into the tab supports, and then the tabs are bent and welded. The nickel strip for voltage sampling is also welded during the tab welding process. Current voltage and temperature sampling often uses integrated busbars. These integrated busbars not only have sampling boards but also busbars for tab connections. The busbars are typically made of aluminum or copper, resulting in high material costs and increasing the overall cost of the battery system. Utility Model Content

[0003] The main objective of this invention is to provide a data acquisition component and a battery system, aiming to solve the technical problem that the high material cost of the busbar increases the cost of the entire battery system.

[0004] To achieve the aforementioned objectives, the first aspect of this utility model provides a data acquisition component, comprising:

[0005] The support member has a through hole;

[0006] A temperature acquisition line is disposed on the support member. The temperature acquisition line is electrically connected to a temperature probe. The temperature probe passes through the through hole and can contact the cell stacking assembly.

[0007] A voltage acquisition line is disposed on the support member and electrically connected to a sampling conductive element, the sampling conductive element being used to acquire the voltage of the cell stack assembly; and

[0008] A sampling connector is provided, which is electrically connected to the temperature acquisition line and the voltage acquisition line respectively, and is used to connect to the battery management system.

[0009] In one embodiment, the outer edge of the support member is provided with a plurality of first protrusions, each of the first protrusions having a notch, and a groove is formed between the notches of two adjacent first protrusions, and the sampling conductive member is engaged in the groove.

[0010] In one embodiment, there is a gap between two adjacent first protrusions, and the voltage acquisition line is disposed within the gap.

[0011] In one embodiment, the support further includes a reinforcing rib disposed on the support and located on the outer periphery of the through hole.

[0012] The second aspect of this utility model provides a battery system, including a cell stacking assembly, a battery management system, and the aforementioned acquisition component, wherein the acquisition component is electrically connected to the cell stacking assembly and the battery management system respectively.

[0013] In one embodiment, the battery system includes a housing and a cover. The housing has a mounting cavity with an opening at one end. The cell stack assembly, the battery management system, and the acquisition assembly are disposed within the mounting cavity. The cover is placed over the housing and seals the opening.

[0014] In one embodiment, the battery system includes a separator having a second protrusion disposed between two adjacent tabs of the cell stack assembly, and the separator being fixed to the tabs.

[0015] In one embodiment, multiple second protrusions are provided, and two adjacent second protrusions are provided with a connecting plate. The connecting plate abuts against the electrode tab, and the connecting plate is provided with a mounting hole.

[0016] In one embodiment, the space between two adjacent second protrusions forms a clearance opening, which provides clearance space for the sampling conductor to be electrically connected to the battery cell.

[0017] In one embodiment, the isolation member is further provided with a bearing portion for supporting the support member, the clearance is located between the connecting plate and the bearing portion, and the height of the bearing portion is lower than the height of the connecting plate.

[0018] Beneficial effects:

[0019] The data acquisition component of this invention includes a support member, a temperature acquisition line, a voltage acquisition line, and a sampling connector. The support member has a through hole. The temperature acquisition line is disposed on the support member and electrically connected to a temperature probe. The temperature probe passes through the through hole and can contact the battery cell stack assembly. The voltage acquisition line is disposed on the support member and electrically connected to a sampling conductive element, which is used to acquire the voltage of the battery cell stack assembly. The sampling connector is electrically connected to both the acquisition line and the voltage acquisition line, and is used to connect to a battery management system.

[0020] During battery system operation, the cell stack assembly generates heat. Temperature probes can sense the temperature of the cell stack assembly in real time and transmit the temperature signal to a sampling connector via a temperature acquisition line, which then transmits it to the battery management system (BMS). The BMS can then acquire the cell temperature data to monitor and control the temperature state of the battery system. Furthermore, the cells output voltage. Sampling conductive components can collect the cell voltage information and transmit the voltage signal to a sampling connector via a voltage acquisition line, which then transmits it to the BMS. This acquisition component can collect both the voltage and temperature of the cell stack assembly, eliminating the need for busbars and saving on busbar materials such as aluminum or copper, thus reducing material costs and consequently lowering the overall cost of the battery system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the acquisition component according to an embodiment of the present invention.

[0022] Figure 2 This is a structural schematic diagram of a support member according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of a battery system according to an embodiment of the present invention.

[0024] Figure 4 This is a partial structural schematic diagram of a battery system according to an embodiment of the present invention.

[0025] Figure 5 This is an exploded view of a portion of the internal structure of a battery system according to an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the structure of the isolation component according to an embodiment of the present invention.

[0027] Figure 7 This is a side view of a partial structure of a battery system according to an embodiment of the present invention.

[0028] Figure 8 yes Figure 7 Enlarged view of point B in the middle.

[0029] Figure 9 yes Figure 2 Enlarged view of point A in the middle.

[0030] in:

[0031] 10. Data Acquisition Components;

[0032] 100. Support component; 110. Through hole; 120. First protrusion; 121. Groove; 122. Gap; 123. Notch; 130. Mounting port; 140. Reinforcing rib;

[0033] 200. Temperature acquisition cable; 210. Temperature probe;

[0034] 300. Voltage acquisition line; 310. Sampling conductive component;

[0035] 400. Sampling connector;

[0036] 20. Cell stacking assembly; 21. Electrode tab;

[0037] 30. Battery Management System;

[0038] 40. Shell; 41. Cover;

[0039] 50. Handle strap;

[0040] 60. Isolation component; 61. Second protrusion; 62. Connecting plate; 63. Mounting hole; 64. Clearance opening; 65. Bearing component;

[0041] 71. Positive electrode harness; 72. Negative electrode harness.

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0044] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] like Figure 1 and Figure 2 As shown, a data acquisition component 10 includes a support member 100, a temperature acquisition line 200, a voltage acquisition line 300, and a sampling connector 400. The support member 100 has a through hole 110. The temperature acquisition line 200 is disposed on the support member 100 and electrically connected to a temperature probe 210. The temperature probe 210 passes through the through hole 110 and can contact the battery cell stack assembly 20. The voltage acquisition line 300 is disposed on the support member 100 and electrically connected to a sampling conductive element 310, which is used to acquire the voltage of the battery cell stack assembly 20. The sampling connector 400 is electrically connected to both the temperature acquisition line 200 and the voltage acquisition line 300, and is used to connect to a battery management system 30.

[0048] During battery system operation, the cell stack assembly 20 generates heat. Temperature probe 210 can sense the temperature of the cell stack assembly 20 in real time and transmit the temperature signal to sampling connector 400 via temperature acquisition line 200, and then from sampling connector 400 to battery management system 30. Battery management system 30 can then acquire the cell temperature data to monitor and control the temperature state of the battery system. Furthermore, the cells output voltage. Sampling conductive component 310 can acquire the cell voltage information and transmit the voltage signal to sampling connector 400 via voltage acquisition line 300, and then from sampling connector 400 to battery management system 30. This acquisition component 10 can acquire the voltage and temperature of the cell stack assembly 20, avoiding the use of busbars and thus saving on busbar materials such as aluminum or copper, reducing material costs, and consequently reducing the overall cost of the battery system.

[0049] It should be noted that in current related technologies, the connection of the tabs is often achieved through welding. First, the soft-pack battery cell stack assembly 20 is placed on a fixture, a tab bracket is fitted over the tab, the tab passes through the tab bracket, and then the tab is bent and welded. The tab bracket is generally made of plastic, which is not heat-resistant. Laser welding may melt the welding area of ​​the bracket. Therefore, a metal piece is also embedded in the tab bracket, placed under the bent tab, to prevent the plastic below the tab from melting and sticking to it. This results in a complex tab bracket structure and high cost. This new structure eliminates the tab bracket, simplifies the acquisition component structure, and uses a fixture to support the tab welding, greatly reducing system costs and simplifying the production process.

[0050] Specifically, the voltage of the battery cell at that location is collected after the sampling conductive component 310 is welded to the electrode tab.

[0051] Specifically, the voltage acquisition line 300 is cold-pressed or ultrasonically connected to the sampling conductive element 310.

[0052] Please refer to the following: Figure 9In some embodiments, the support member 100 has a plurality of first protrusions 120 on its outer edge. Each first protrusion 120 has a notch 123, and a groove 121 is formed between the notches 123 of two adjacent first protrusions 120. The sampling conductive member 310 is fitted into the groove 121. The notch 123 is located at the outer edge of the support member 100 and is positioned such that one of the first protrusions 120 faces the other. For example, when the first protrusion 120 is square, the notch 123 is located diagonally opposite the first protrusion 120. The groove 121 can limit the positioning of the sampling conductive member 310, which is then fixed with adhesive within the groove 121. The groove 121 formed by the first protrusions 120 provides mechanical positioning for the sampling conductive member 310. When the sampling conductive member 310 is installed, the groove 121 guides the conductive member to be accurately placed in the designated position.

[0053] Specifically, the sampling conductive element 310 can be a metal sheet.

[0054] Specifically, the support member 100 can be a square support plate.

[0055] Specifically, multiple first protrusions 120 are equidistantly spaced along the outer edge of the support member 100. These first protrusions 120 form multiple grooves 121. Each groove 121 corresponds one-to-one with a multiple sampling conductive element 310. The equidistant spacing of the grooves 121 along the outer edge allows installers to quickly and accurately install each sampling conductive element 310 into its corresponding groove 121 without repeated adjustments, reducing time and effort spent during installation and improving overall installation efficiency.

[0056] like Figure 2 As shown, multiple first protrusions 120 are arranged along the length direction of the support member 100. Multiple first protrusions 120 are provided on the outer edges of both sides of the support member 100. That is, two sets of first protrusions 120 are provided on the outer edges of both sides of the support member 100.

[0057] Specifically, a gap 122 is formed between two adjacent first protrusions 120, and the voltage acquisition line 300 is disposed within the gap 122. The gap 122 is connected to the groove 121. It should be noted that the gap 122 is formed by adjacent first protrusions 120 on the support member 100, and the groove 121 is formed by the notch 123 of the adjacent first protrusions 120, and the groove 121 is connected to the gap 122. This arrangement provides a specific interrelated placement space for the voltage acquisition line 300 and the sampling conductive element 310, allowing multiple sampling conductive elements 310 to be arranged in an orderly manner within the limited space of the support member 100, avoiding mutual interference.

[0058] like Figure 2As shown, in some embodiments, the support member 100 is further provided with a mounting opening 130 on its outer periphery. The mounting opening 130 cooperates with the positioning features of the welding fixture to realize the positioning of the support member 100 on the welding fixture.

[0059] In some embodiments, the support member 100 further includes a reinforcing rib 140, which is disposed on the support member 100 and located on the outer periphery of the through hole 110. The reinforcing rib 140 provides additional support and constraint to the support member 100, enhancing its strength and making its structure more stable. When the support member 100 is subjected to external forces, the reinforcing rib 140 can limit the deformation range of the support member 100, maintaining the stability of its shape and dimensions. Furthermore, the presence of the through hole 110 can easily lead to uneven stress distribution in the support member 100, causing twisting deformation. The reinforcing rib 140 effectively overcomes this uneven stress problem, allowing the support member 100 to transmit stress more evenly when under load, avoiding deformation or damage caused by stress concentration, and improving the reliability and service life of the support member 100.

[0060] Specifically, the reinforcing rib 140 is disposed at the middle of the support member 100 in the width direction. The reinforcing rib 140 is disposed between the two sets of first protrusions 120. This arrangement can significantly improve the bending resistance of the support member 100. When the support member 100 is subjected to an external force perpendicular to the width direction, the reinforcing rib 140 can effectively resist bending deformation, making the support member 100 less prone to bending damage when subjected to large loads.

[0061] like Figure 3 As shown, in some embodiments, a battery system includes a cell stacking assembly 20, a battery management system 30, and the aforementioned data acquisition component 10. The data acquisition component 10 is electrically connected to both the cell stacking assembly 20 and the battery management system 30. The data acquisition component 10 is disposed on the cell stacking assembly 20. The battery management system 30 is disposed on a mounting plate located on the side of the cell stacking assembly 20.

[0062] It should be noted that the Battery Management System (BMS) is an intelligent system specifically designed to manage and protect battery packs. The BMS 30 receives data from the acquisition unit 10 and processes and analyzes this data. Using specific algorithms, it estimates key parameters such as the battery's state of charge and health. Based on the analysis results, the BMS 30 issues corresponding control commands. When conditions such as excessively high or low battery voltage, abnormal temperature, or excessive current are detected, protection mechanisms are triggered, such as cutting off the charging and discharging circuit or activating the cooling system.

[0063] In some embodiments, the battery system includes a housing 40 and a cover 41. The housing 40 has a mounting cavity with an opening at one end. The cell stacking assembly 20, the battery management system 30, and the data acquisition assembly 10 are disposed within the mounting cavity. The cover 41 covers the housing 40 and seals the opening. The cover 41 and the housing 40 are tightly connected by a structure such as snaps or threads, so that the cover 41 fits tightly against the opening of the housing 40, forming a physical barrier to prevent external dust, moisture, and other impurities from entering the mounting cavity. In addition, the housing 40 and the cover 41, as the external structure of the battery system, have a certain strength and rigidity, and can withstand a certain amount of external impact and compression. When the battery system is hit or compressed by external objects, the housing 40 can disperse the external force, preventing direct damage to the cell stacking assembly 20, the battery management system 30, and the data acquisition assembly 10.

[0064] Specifically, the battery cell system includes a handle 50, which is provided on the housing 40 and the cover 41 to facilitate the extraction of the entire battery system.

[0065] like Figures 6 to 8 As shown, specifically, the battery system includes a separator 60, and the acquisition component 10 is disposed on the separator 60. The separator 60 is provided with a second protrusion 61, which is disposed between two adjacent tabs 21 of the cell stack assembly 20, and the separator 60 is fixed to the tabs 21. The separator 60 can be made of insulating material. In the working state, the tabs 21 of the cell stack assembly 20 have a certain degree of elasticity and mobility, and may undergo slight displacement after the battery system is subjected to vibration, impact, or long-term use. The separator 60, through its second protrusion 61, is inserted between two adjacent tabs 21, forming a barrier in physical space to prevent adjacent tabs from approaching each other until they make contact, thus preventing short circuits in the tabs 21. Specifically, the tabs are first bent to form bent tabs, the bent tabs are then welded, and finally the separator is installed.

[0066] Specifically, multiple second protrusions 61 are provided, and two adjacent second protrusions 61 are provided with connecting plates 62. The connecting plates 62 abut against the electrode tabs 21, and mounting holes 63 are provided on the connecting plates 62. Specifically, the mounting holes 63 can be glue holes. During the installation process, glue can be applied to the glue holes to fix the connecting plates 62 to the electrode tabs 21.

[0067] In some embodiments, the space between two adjacent second protrusions 61 forms a clearance opening 64, which provides clearance space for the sampling conductive element 310 to make electrical connection with the battery cell. Specifically, the clearance opening 64 provides clearance space for the connection between the sampling conductive element 310 and the battery cell's tab, allowing the sampling conductive element 310 to contact the battery cell's tab.

[0068] Specifically, the isolation member 60 is also provided with a support portion 65, which is used to support the support member 100. The clearance opening 64 is located between the connecting plate 62 and the support portion 65, and the height of the support portion 65 is lower than the height of the connecting plate 62. The arrangement of the support portion 65 and the connecting plate 62 forms a specific spatial structure. The clearance opening 64 is located between the support portion 65 and the connecting plate 62 to meet the requirements of the sampling conductive member 310 and the battery cell for electrical connection.

[0069] like Figure 4 and Figure 5 As shown, in some embodiments, the battery system further includes a positive electrode harness 71 and a negative electrode harness 72. One end of the positive electrode harness 71 and the negative electrode harness 72 is connected to an aluminum busbar. Specific welding and assembly steps include: cutting the tabs, attaching insulating films to both ends of the battery cells, and stacking the battery cells and materials such as foam. The battery cell stack assembly 20 is mounted on a welding fixture, and a high-temperature tab support fixture is inserted at the position of the tabs. The aluminum busbars of the positive electrode harness 71 and the negative electrode harness 72 are fixed onto the fixture. The aluminum busbars of the positive electrode harness 71 and the negative electrode harness 72 can be detachably connected to the fixture. The tabs are folded in half and flattened, and the acquisition component bracket is placed over the middle of the two tabs and positioned on the fixture. The tabs are welded to the sampling conductive component 310. The tab support welding fixture is removed, and thermally conductive adhesive is applied to fix the temperature probe 210. After the battery cell stack assembly 20 is welded, the welding fixture is removed.

[0070] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A collection assembly comprising: The application relates to a battery system, which comprises the following parts: a support provided with a through hole; a temperature collection line arranged on the support, wherein a temperature probe is electrically connected to the temperature collection line, the temperature probe is arranged in the through hole and can contact a battery cell stack assembly; a voltage collection line arranged on the support, wherein a sampling conductive part is electrically connected to the voltage collection line, and the sampling conductive part is used for collecting the voltage of the battery cell stack assembly; a sampling connector electrically connected to the temperature collection line and the voltage collection line, and used for connecting a battery management system. A plurality of first protruding parts are arranged on the outer edge of the support, the first protruding parts are provided with notches, a groove is formed between the notches of two adjacent first protruding parts, and the sampling conductive part is clamped in the groove.

2. The collection assembly of claim 1, wherein, The voltage collection line is arranged in the gap between two adjacent first protruding parts.

3. The collection assembly of claim 2, wherein, The support further comprises a reinforcing rib arranged on the support and located at the outer periphery of the through hole.

4. The collection assembly of claim 1, wherein, The battery system comprises a battery cell stack assembly, a battery management system and the collection assembly of any one of claims 1-4, and the collection assembly is electrically connected to the battery cell stack assembly and the battery management system.

5. A battery system characterized by, The battery system comprises a shell provided with a mounting cavity with an opening at one end, the battery cell stack assembly, the battery management system and the collection assembly are arranged in the mounting cavity, and a cover is arranged on the shell and seals the opening.

6. The battery system of claim 5, wherein, The battery system comprises a separator provided with a second protruding part, the second protruding part is arranged between two adjacent tab lugs of the battery cell stack assembly, and the separator is fixed to the tab lugs.

7. The battery system of claim 5, wherein, A plurality of second protruding parts are arranged, two adjacent second protruding parts are provided with a connecting plate abutting against the tab lugs, and a mounting hole is arranged on the connecting plate.

8. The battery system of claim 7, wherein, The spacing space between two adjacent second protruding parts forms an avoiding opening, and the avoiding opening provides an avoiding space for the sampling conductive part to electrically connect with the battery cell.

9. The battery system of claim 8, wherein, The separator is further provided with a bearing part for bearing the support, the avoiding opening is located between the connecting plate and the bearing part, and the height of the bearing part is lower than that of the connecting plate.

10. The battery system of claim 9, wherein, ​

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