Battery acquisition assembly based on bow-shaped reed electrode direct measurement and battery module

Abstract

The invention discloses a battery acquisition assembly based on bow-shaped reed electrode direct measurement and a battery module, the acquisition assembly comprises a substrate, and a plurality of metal contacts are respectively arranged on a first surface and a second surface opposite to the first surface of the substrate; the data acquisition interface is electrically connected with the metal contact through the substrate; supporting legs are arranged at the two ends of the arched voltage sampling reeds, and the arched voltage sampling reeds are connected with the metal contacts; the insulating supports are used for supporting the cylindrical battery strings and are connected to the first surface and the second surface of the base plate respectively, and the battery collection assembly and the battery module based on arch reed electrode direct measurement can collect the voltage and the temperature of the single batteries, and are simple in structure and high in expansion capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery collection component and a battery module based on direct measurement of bow-shaped spring electrodes. Background Art

[0002] In battery energy storage applications, due to the relatively low voltage and capacity of individual cells, several batteries are connected in series to form an energy storage module for easier system integration and battery management. To ensure timely access to battery information within the energy storage module, appropriate sampling circuits for cell voltage and battery temperature are required. The battery management system aggregates and analyzes this data to guide the battery module's subsequent operational strategies.

[0003] For cylindrical battery modules, they are generally divided into linear arrangement and matrix arrangement according to whether the cells are axially connected in series. Among them, the matrix arrangement has a higher energy density, but the heat dissipation effect is biased. High-rate applications require additional cooling plate assemblies, which is more suitable for energy-type application scenarios; in the linear arrangement, both sides of the battery cells are exposed to the air, the heat dissipation effect is better, and the connection method is suitable for operation under high current. However, the linear arrangement battery modules of the prior art require complicated welding harnesses or a large number of cables and connectors, and there are problems with relatively complex sampling structures and poor expansion capabilities. For example, there is a Chinese patent with publication number CN115032550A, which involves a module voltage acquisition system and a battery module. Voltage sampling is performed through sampling terminals and wires. Not only is the harness structure complex, but welding is also required. Summary of the Invention

[0004] In order to solve the problems of complex single-cell voltage sampling structure and numerous wiring harnesses in linearly arranged cylindrical battery modules, the present invention proposes a battery collection component and battery module based on direct measurement of bow-shaped spring electrodes. The bow-shaped spring is in elastic contact with the electrode, combined with a substrate with double-sided integrated contacts, to achieve the voltage collection of single cells. There is no need for complicated welding harnesses, the structure is simple, and the heat dissipation is good.

[0005] A further object of the present invention is to enhance the expansion capability of the quasi-linear arrangement battery module.

[0006] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a battery collection component based on direct measurement of bow-shaped spring electrodes, comprising: a substrate, a first surface and a second surface opposite to the first surface of the substrate are respectively provided with a plurality of metal contacts; a data acquisition interface, electrically connected to the metal contacts through the substrate; a plurality of bow-shaped voltage sampling springs in contact with the battery electrodes, with support legs provided at both ends for connecting the metal contacts; an insulating bracket supporting a cylindrical battery string, respectively connected to the first surface and the second surface of the substrate.

[0007] This technical solution utilizes bow-shaped springs to directly and elastically contact the battery's positive and negative electrodes, collecting voltage and temperature signals through metal contacts and data interfaces on the baseplate. This direct contact replaces traditional welded wiring harnesses, combined with a baseplate with double-sided integrated contacts and an insulating bracket, significantly simplifying the sampling structure, eliminating numerous cables and connectors, and reducing complexity and cost.

[0008] Preferably, it includes a temperature measuring chip electrically connected to the metal contact or the voltage sampling reed.

[0009] Preferably, the substrate is a strip-shaped plate, on which a printed circuit is provided, connecting the metal contacts with a data acquisition interface, and the data acquisition interface is provided at an edge of the first surface of the substrate close to a short side.

[0010] Preferably, the voltage sampling reed includes a contact portion and a connecting portion. When the contact portion is in contact with the electrode of the cylindrical battery, the surface away from the substrate is bent into a first arc surface convex toward the substrate and formed by axial translation of the arc line of the inferior arc. The contact portion has connecting portions extending toward the substrate on both sides perpendicular to the axial direction and parallel to the substrate. The connecting portions are connected to supporting feet, and the supporting feet of the same voltage sampling reed are connected to the same metal contact.

[0011] Preferably, the insulating bracket is provided with a plurality of protrusions, and a protrusion is provided on each side of the voltage sampling spring parallel to the axial direction. The third surface of the protrusion away from the substrate is located on a cylindrical surface coaxial with the first arc surface. The third surface is in contact with the side of the cylindrical battery, and the middle part of the protrusion is recessed downward to form a groove.

[0012] The present invention also adopts the following technical solution: a battery module based on direct measurement of bow-shaped spring electrodes, comprising several of the above-mentioned battery collection components based on direct measurement of bow-shaped spring electrodes, comprising several collection components arranged at equal intervals to form an intermediate collection layer, and a cylindrical battery string formed by a distribution of several cylindrical battery arrays is respectively provided on the upper and lower sides thereof, the cylindrical battery string is respectively connected to module cover plates at the upper and lower ends, and end face protection plates are provided at both ends of the module cover plates for fixedly connecting the upper and lower module cover plates, and several insulating brackets are arranged at equal intervals on the module cover plates.

[0013] In this technical solution, the modular baseboard design supports flexible serial connection and plug-and-play, greatly improving the module expansion capability and maintenance convenience.

[0014] Preferably, the distance between two adjacent collection components is the axial length of the cylindrical battery.

[0015] Preferably, it comprises a heat dissipation protection plate and a data processing circuit board computing board, and the data processing circuit board is provided with a signal interface connected to the data acquisition interface.

[0016] Preferably, the data processing circuit board includes an AFE front-end analog chip to record and convert the single-cell voltage and temperature data from the data acquisition interface. The signal interface is connected to a main control communication interface to transmit the data to the upper-level control unit.

[0017] Preferably, a plurality of connection holes are provided on the base plate of the collection component, and connecting pieces are provided in the connection holes, and the collection component is fixed by the connecting pieces.

[0018] The beneficial effects of the present invention are: 1) The connection process between the sampling site and the battery electrode is simplified, and combined with the printed circuits in the PCB, a cylindrical battery string sampling method without the use of wires is realized; 2) The module structure can be repeated to form a larger-scale energy storage module with good scalability; 3) The temperature measurement chip is directly integrated into the electrode voltage sampling point, avoiding the temperature measurement error caused by environmental heat loss and slow internal heat transfer in the shell temperature measurement method; 4) The battery pack is transmitted together with the voltage signal interface using a PCB printed circuit, eliminating the need for complex temperature measurement circuits. This avoids the time-consuming assembly process and the impact on air cooling and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the acquisition component provided in an embodiment of the present invention.

[0020] Figure 2 It is a top view of the collection component provided in an embodiment of the present invention.

[0021] Figure 3 yes Figure 2 Section view at AA.

[0022] Figure 4 It is a schematic diagram of the installation of the collection component and cylindrical battery provided in an embodiment of the present invention.

[0023] Figure 5 Schematic diagram of the acquisition component substrate provided in an embodiment of the present invention.

[0024] Figure 6 It is an exploded view of the main components of the battery module provided in an embodiment of the present invention.

[0025] Figure 7 Schematic diagram of the battery module structure without a computing board provided in an embodiment of the present invention.

[0026] Figure 8 Schematic diagram of the computing board structure provided in an embodiment of the present invention.

[0027] Figure 9Schematic diagram of the battery module structure including a computing board provided in an embodiment of the present invention.

[0028] Figure 1: Collection component 10; substrate 101; insulating bracket 102; voltage sampling spring 103; temperature measuring chip 104; data acquisition interface 105; metal contact 106; cylindrical battery string 20; cylindrical battery 201; electrode 202; battery pack positive electrode 203; battery pack negative electrode 204; module cover 30; end face protection plate 40; computing board 50; heat dissipation protection plate 501; data processing circuit board 502; signal interface 503; fixing part 504; main control communication interface 505. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific implementation method described herein is only an optimal embodiment of the present invention, which is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Example 1 This embodiment provides a battery sampling assembly 10 based on direct measurement of bow-shaped spring electrodes. The main body of the sampling assembly 10 includes a substrate 101 , an insulating bracket 102 , and a voltage sampling spring 103 .

[0031] The substrate 101 is a PCB board in a strip shape, including a first surface and a second surface opposite to the first surface. A plurality of metal contacts 106 are respectively provided on the first surface and the second surface opposite to the first surface of the substrate 101 .

[0032] A printed circuit is provided on the substrate 101 , connecting the metal contacts 106 with the data acquisition interface 105 . The data acquisition interface 105 is provided on the edge of the first surface of the substrate 101 close to a short side.

[0033] The voltage sampling reed 103 is bow-shaped, and the middle of the voltage sampling reed 103 contacts the battery electrode. Support feet are provided at both ends of the voltage sampling reed 103, which contact the metal contacts 106 on the substrate 101. Each metal contact 106 is connected to a voltage sampling reed 103.

[0034] Specifically, the voltage sampling reed 103 is elastic. When the contact portion is in contact with the electrode of the cylindrical battery, the surface away from the substrate is bent into a first arc surface convex toward the substrate and formed by axial translation of the arc line of the inferior arc. The contact portion has connecting portions extending toward the substrate 101 on both sides perpendicular to the axial direction and parallel to the substrate 101. The connecting portions are connected to supporting feet. The supporting feet of the same voltage sampling reed 103 are connected to the same metal contact 106.

[0035] The substrate 101 is provided with a data acquisition interface 105 , which is electrically connected to the metal contacts 106 through the printed circuit of the substrate 101 , so that the battery voltage connected to the sampling board can be directly obtained at the data acquisition interface 105 .

[0036] The insulating bracket 102 supporting the cylindrical battery string 20 is connected to the first surface and the second surface of the substrate 101 respectively, and is used to support the cylindrical battery string 20 and provide a heat dissipation duct.

[0037] Specifically, the insulating bracket 102 is provided with several protrusions, and the voltage sampling reed 103 is provided with a protrusion on both sides parallel to the axial direction. The third surface of the protrusion away from the substrate 101 is located on a cylindrical surface coaxial with the first arc surface. The third surface is in contact with the side of the cylindrical battery 201, and the middle part of the protrusion is recessed downward to form a groove.

[0038] In this technical solution, a PCB substrate 101 is combined with an insulating bracket 102 to form a support component for cylindrical battery string 20 and a voltage and temperature sensor. The use of a bow-shaped spring simplifies the connection process between the sampling point and the battery electrode. Combined with the printed circuit board within the PCB, this method enables wire-free sampling of cylindrical battery string 20.

[0039] Example 2 This embodiment provides a battery collection component 10 based on direct measurement of bow-shaped spring electrodes, such as Figure 1-Figure 2 As shown, the main body of the acquisition component 10 includes a substrate 101, an insulating bracket 102 and a voltage sampling reed 103. Different from the embodiment 1, a temperature measurement chip 104 is attached to the metal contact 106 of the substrate 101 of this embodiment.

[0040] The substrate 101 is a PCB board in a strip shape, including a first surface and a second surface opposite to the first surface. The first surface and the second surface opposite to the first surface of the substrate 101 are respectively provided with a plurality of metal contacts 106, and the plurality of metal contacts 106 are arranged linearly.

[0041] A printed circuit is provided on the substrate 101 , connecting the metal contacts 106 with the data acquisition interface 105 . The data acquisition interface 105 is provided on the edge of the first surface of the substrate 101 close to a short side.

[0042] The voltage sampling reed 103 is bow-shaped, and the middle of the voltage sampling reed 103 contacts the battery electrode. Support feet are provided at both ends of the voltage sampling reed 103, which contact the metal contacts 106 on the substrate 101. Each metal contact 106 is connected to a voltage sampling reed 103.

[0043] Specifically, if Figure 1As shown, the voltage sampling spring 103 is elastic. When the contact portion is in contact with the electrode of the cylindrical battery, the surface away from the substrate is bent into a first arc surface convex toward the substrate by axial translation of the arc line of the inferior arc. The contact portion is perpendicular to the axial direction and parallel to the substrate 101. Both sides extend toward the substrate 101 with connecting portions, which are connected to supporting feet. Each metal contact 106 is connected to a voltage sampling spring 103. Figure 3 As shown, the metal contact can contact a supporting leg of the voltage sampling reed.

[0044] The substrate 101 is provided with a data acquisition interface 105 , which is electrically connected to the metal contacts 106 through the printed circuit of the substrate 101 to form an external sampling interface, so that the battery voltage connected to the sampling board can be directly obtained at the data acquisition interface 105 .

[0045] In this embodiment, the metal contacts 106 are rounded rectangular contact blocks distributed on the surface of the substrate 101, such as Figure 5 As shown, each metal contact is connected to the data acquisition interface through the printed circuit on the substrate. However, it should be understood that the size and shape of the metal contacts are not limited to the solution of this embodiment and can be adjusted according to actual conditions.

[0046] The insulating bracket 102 supporting the cylindrical battery string 20 is connected to the first surface and the second surface of the substrate 101 respectively, and is used to support the cylindrical battery string 20 and provide a heat dissipation duct.

[0047] Specifically, the insulating bracket 102 is a long rectangular plate with several rectangular through holes in the middle. The supporting feet of the voltage sampling reed are fixed between the insulating bracket and the substrate. The contact part passes through the rectangular through hole and is located on the side of the rectangular plate away from the substrate 101. The insulating bracket 102 is provided with several protrusions. The voltage sampling reed 103 is provided with a protrusion on both sides parallel to the axial direction. A long strip groove is formed between the two protrusions to accommodate the contact part and the connecting part of the voltage sampling reed 103, and the voltage sampling reed 103 is pressed and fixed on the substrate 101 to form a flexible sampling structure.

[0048] The third surface of the protrusion away from the substrate 101 is located on a cylindrical surface coaxial with the first arc surface, and the third surface is in contact with the side surface of the cylindrical battery 201 .

[0049] In this embodiment, the middle of the protrusion is depressed downward to form a groove, which facilitates the taking and placement of the cylindrical battery 201.

[0050] In this technical solution, a PCB substrate 101 is combined with an insulating support member to form a support component for cylindrical battery string 20 and a voltage and temperature sensor. The use of a bow-shaped spring simplifies the connection process between the sampling point and the battery electrode. Combined with the printed circuit board within the PCB, this method enables sampling of cylindrical battery string 20 without the use of wires.

[0051] When the collection component 10 is installed with a battery, its structure is as follows Figure 4 As shown, the edge of the cylindrical battery 201 is placed on the insulating bracket 102, and the corresponding electrode 202 is in contact with the above-mentioned flexible sampling structure, thus opening the connection between the data acquisition interface 105 and the battery electrode.

[0052] In this embodiment, a temperature measuring chip 104 is attached to the metal contact 106 of the substrate 101. The temperature measuring chip 104 is electrically connected to the metal contact 106. The relatively good thermal conductivity of metal is used to indirectly measure the battery electrode temperature, convert it into an electrical signal, and transmit it to the data acquisition interface 105.

[0053] Specifically, a temperature measurement chip 104, such as a PTO thermal resistor, is placed on a metal contact 106 at the location where battery temperature needs to be measured. Thermal conduction between the battery electrode, the metal reed, and the metal contact 106 indirectly measures the battery electrode temperature. The pins of the temperature measurement chip 104 are connected to a data acquisition interface 105 via a printed circuit board, enabling unified interface acquisition of voltage and temperature.

[0054] In this embodiment, a battery acquisition component 10 based on direct measurement of bow-shaped spring electrodes integrates a temperature measurement chip 104 directly into the electrode voltage sampling point, taking into account the characteristic that the electrode temperature is the highest during the operation and heating period of the cylindrical battery 201, thereby avoiding the temperature measurement error problem caused by environmental heat loss and slow internal heat transfer in the shell temperature measurement method.

[0055] Example 3 This embodiment provides a battery data acquisition assembly 10 based on direct measurement using a bow-shaped spring electrode. The main body of the data acquisition assembly 10 includes a substrate 101, an insulating bracket 102, and a voltage sampling spring 103. Unlike the second embodiment, the temperature measurement chip 104 of this embodiment is attached to the voltage sampling spring 103.

[0056] The substrate 101 is a PCB board in a strip shape, including a first surface and a second surface opposite to the first surface. The first surface and the second surface opposite to the first surface of the substrate 101 are respectively provided with a plurality of metal contacts 106. The plurality of metal contacts 106 are block-shaped and cover the surface of the substrate 101. The plurality of metal contacts 106 are linearly arranged.

[0057] A printed circuit is provided on the substrate 101 , connecting the metal contacts 106 with the data acquisition interface 105 . The data acquisition interface 105 is provided on the edge of the first surface of the substrate 101 close to a short side.

[0058] The voltage sampling reed 103 is bow-shaped, and the middle of the voltage sampling reed 103 contacts the battery electrode. Support feet are provided at both ends of the voltage sampling reed 103, which contact the metal contacts 106 on the substrate 101. Each metal contact 106 is connected to a voltage sampling reed 103.

[0059] Specifically, the voltage sampling reed 103 is elastic. When the contact portion is in contact with the electrode of the cylindrical battery, the surface away from the substrate is bent into a first arc surface convex toward the substrate and formed by axial translation of the arc line of the inferior arc. The contact portion has connecting portions extending toward the substrate 101 on both sides perpendicular to the axial direction and parallel to the substrate 101. The connecting portions are connected to supporting feet. The supporting feet of the same voltage sampling reed 103 are connected to the same metal contact 106.

[0060] The substrate 101 is provided with a data acquisition interface 105 , which is electrically connected to the metal contacts 106 through the printed circuit of the substrate 101 to form an external sampling interface, so that the battery voltage connected to the sampling board can be directly obtained at the data acquisition interface 105 .

[0061] The insulating bracket 102 supporting the cylindrical battery string 20 is connected to the first surface and the second surface of the substrate 101 respectively, and is used to support the cylindrical battery string 20 and provide a heat dissipation duct.

[0062] Specifically, the insulating bracket 102 is provided with several protrusions, and the voltage sampling reed 103 is provided with a protrusion on both sides parallel to the axial direction. A long strip groove for accommodating the voltage sampling reed 103 is formed between the two protrusions, and the voltage sampling reed 103 is pressed and fixed on the substrate 101 to form a flexible sampling structure.

[0063] The third surface of the protrusion away from the substrate 101 is located on a cylindrical surface coaxial with the first arc surface, and the third surface is in contact with the side surface of the cylindrical battery 201 .

[0064] In this embodiment, the middle of the protrusion is depressed downward to form a groove, which facilitates the taking and placement of the cylindrical battery 201.

[0065] In this technical solution, a PCB substrate 101 is combined with an insulating support member to form a support component for cylindrical battery string 20 and a voltage and temperature sensor. The use of a bow-shaped spring simplifies the connection process between the sampling point and the battery electrode. Combined with the printed circuit board within the PCB, this method enables sampling of cylindrical battery string 20 without the use of wires.

[0066] In this embodiment, a temperature measuring chip 104 is attached to the voltage sampling reed 103 . The temperature measuring chip 104 is electrically connected to the voltage sampling reed 103 . The relatively good thermal conductivity of metal is used to indirectly measure the battery electrode temperature, convert it into an electrical signal, and transmit it to the data acquisition interface 105 .

[0067] In this embodiment, a battery acquisition component 10 based on direct measurement of bow-shaped spring electrodes integrates a temperature measurement chip 104 directly into the electrode voltage sampling point, taking into account the characteristic that the electrode temperature is the highest during the operation and heating period of the cylindrical battery 201, thereby avoiding the temperature measurement error problem caused by environmental heat loss and slow internal heat transfer in the shell temperature measurement method.

[0068] Example 4 This embodiment provides a battery module based on direct measurement of bow-shaped spring electrodes. Based on the above-mentioned battery collection component 10 based on direct measurement of bow-shaped spring electrodes, a module cover 30, a cylindrical battery string 20, a collection component 10, a cylindrical battery string 20, and a module cover 30 are stacked longitudinally in this order to integrate a small battery module. The module is simple to integrate and has high reliability. It can be used in high-power battery applications such as energy saving of lifting equipment and frequency modulation of power grids. Its structure is as follows: Figure 6 shown.

[0069] The acquisition component 10 is placed in the middle layer of the battery module. Several acquisition components 10 are arranged at equal intervals to form a middle acquisition layer, which can simultaneously measure the voltage and temperature data of the upper and lower layers and transmit them to the side data acquisition interface 105.

[0070] A cylindrical battery string 20 formed by a plurality of cylindrical batteries 201 distributed in an array is provided on the upper and lower sides of the middle collection layer, and a module cover plate 30 is connected to the upper and lower outer sides of the cylindrical battery string 20 respectively.

[0071] The distance between two adjacent collection components 10 is the axial length of the cylindrical battery 201. Figure 4 As shown, the cylindrical battery 201 includes a battery body and an electrode 202. The battery body is cylindrical, and the electrode 202 is arranged on one end face of the battery body. The end of the battery body close to the electrode 202 is called the head end, and the end of the battery body away from the electrode 202 is called the tail end. The electrode 202 of each cylindrical battery 201 in the cylindrical battery string 20 is connected to a voltage collection spring. The protrusion of the insulating bracket 102 on one side of the voltage sampling spring 103 supports the head end of the cylindrical battery body from the side, and the protrusion of the insulating bracket 102 on the other side of the voltage sampling spring 103 supports the tail end of the adjacent cylindrical battery body from the side.

[0072] After adding the end protection plate 40 and other fixing components, the battery module is as follows Figure 7As shown, end protection plates 40 are provided at both ends of the module cover 30 to securely connect the upper and lower module covers 30. Several insulating brackets 102 are evenly spaced on the module cover 30. The base plate 101 of the collection component 10 is provided with several connection holes, each of which contains a connector. The collection component 10 is secured by the connector.

[0073] The battery module of this embodiment is easy to install and does not contain voltage and temperature sampling circuits. By connecting the voltage and temperature sampling ports in the external battery management system to the data acquisition interface 105, basic battery management functions can be achieved, greatly reducing the complexity of circuit connections.

[0074] Example 5 This embodiment provides a battery module based on direct measurement of bow-shaped spring electrodes. Based on the above-mentioned battery collection component 10 based on direct measurement of bow-shaped spring electrodes, the module cover 30, the cylindrical battery string 20, the collection component 10, the cylindrical battery string 20, and the module cover 30 are stacked vertically in this order to integrate a small battery module. Its structure is as follows: Figure 6 Different from the fourth embodiment, the battery module of this embodiment is further provided with a computing board 50 .

[0075] The acquisition component 10 is placed in the middle layer of the battery module. Several acquisition components 10 are arranged at equal intervals to form a middle acquisition layer, which can simultaneously measure the voltage and temperature data of the upper and lower layers and transmit them to the side data acquisition interface 105.

[0076] A cylindrical battery string 20 formed by a plurality of cylindrical batteries 201 distributed in an array is provided on the upper and lower sides of the middle collection layer, and a module cover plate 30 is connected to the upper and lower outer sides of the cylindrical battery string 20 respectively.

[0077] The distance between two adjacent collection components 10 is the axial length of the cylindrical battery 201. Figure 4 As shown, the cylindrical battery 201 includes a battery body and an electrode. The battery body is cylindrical, and the electrode is arranged on one end face of the battery body. The end of the battery body close to the electrode is called the head end, and the end of the battery body away from the electrode is called the tail end. The electrode of each cylindrical battery 201 in the cylindrical battery string 20 is connected to a voltage collection spring. The protrusion of the insulating bracket 102 on one side of the voltage sampling spring 103 supports the head end of the cylindrical battery body from the side, and the protrusion of the insulating bracket 102 on the other side of the voltage sampling spring 103 supports the tail end of the adjacent cylindrical battery body from the side.

[0078] After adding the end protection plate 40 and other fixing components, the battery module is as follows Figure 7As shown, end protection plates 40 are provided at both ends of the module cover 30 to securely connect the upper and lower module covers 30. Several insulating brackets 102 are evenly spaced on the module cover 30. The base plate 101 of the collection component 10 is provided with several connection holes, each of which contains a connector. The collection component 10 is secured by the connector.

[0079] The battery module of this embodiment is further provided with a computing board 50, through which the data acquisition interface 105 is uniformly connected. The structure is as follows: Figure 8 As shown, the main body of the computing board 50 includes a data processing circuit board 502 , a heat dissipation protection board 501 , a signal interface 503 and a main control communication interface 505 .

[0080] The data processing circuit board 502 is provided with an analog front end (AFE) or a digital-to-analog converter (ADC) chip for recording and converting the cell voltage and temperature data from the data acquisition interface 105 .

[0081] The data processing circuit board 502 is also provided with several signal interfaces 503 and a main control communication interface 505 connected to the signal interface 503. The signal interface 503 can receive data from the data acquisition interface 105. The data processing circuit board 502 is connected to the data acquisition interface 105 of the acquisition component 10 through the signal interface 503, calculates and pre-processes the battery operating parameters nearby, and converts them into digital signals, which are transmitted to the upper-level control device through the main control communication interface 505.

[0082] In this embodiment, the main control communication interface 505 uses a shielded RJ45 interface, and the shielding layer is connected to the heat dissipation protection plate 501 to improve the anti-interference ability of signal transmission.

[0083] The heat dissipation protection plate 501 is in contact with the computing board 50 . In this embodiment, the heat dissipation protection plate 501 is made of metal, providing strength support and chip heat dissipation function. A fixing part 504 is provided on the heat dissipation plate, and the heat dissipation plate is fixedly connected to the computing board 50 through the fixing part 504 .

[0084] In addition, according to specific needs, the computing board 50 can add battery balancing and pressure measurement circuit online adjustment functions.

[0085] Add the battery module of the computing board 50 as Figure 9 As shown, the battery pack's positive electrode 203 and negative electrode 204 are connected to an external power supply circuit, while the main control communication interface 505 is connected to an external communication circuit, enabling the battery module's charging, discharging, and status monitoring functions. The associated circuitry is simple and reliable, making integration and maintenance simple, while also significantly reducing the module's BOM cost.

[0086] In this embodiment, a PCB printed circuit is used to transmit the voltage signal from the battery pack together with the voltage signal interface 503, without using a complicated temperature measurement circuit, thus avoiding the problem of time-consuming assembly process and affecting air cooling and heat dissipation.

[0087] The computing board 50 works in conjunction with the sampling board. The internal circuit board includes an onboard signal interface 503 and a voltage sampling and calculation chip, enabling local preprocessing and computation of battery data. This data is directly converted into digital signals and transmitted to higher-level control via a shielded master communication interface 505, simplifying integration complexity and improving signal transmission stability and reliability.

[0088] In addition, the computing board 50 can be expanded with equalization functions and dynamic adjustment functions for the sampling circuits. At the same time, the sampling board and the computing board 50 are interfaced, and the related hardware can be quickly replaced and upgraded, which provides better flexibility.

[0089] The power-type cylindrical battery module 201 integrated with the above-mentioned energy collection assembly 10 proposed in this embodiment is constructed in a sequential manner consisting of a module cover 30, a battery string, a collection assembly 10, a battery string, and a module cover 30. This structure is simple, with no internal wire connections, providing ample heat dissipation space and facilitating improved sampling and balancing stability and reliability. Furthermore, this structure can be repeated to form a larger-scale energy storage module, offering excellent scalability.

Claims

1. A battery collection component based on direct measurement of bow-shaped spring electrodes, characterized in that: include: A substrate (101), wherein a first surface and a second surface opposite to the first surface of the substrate (101) are respectively provided with a plurality of metal contacts (106); a data acquisition interface (105) electrically connected to the metal contacts (106) through the substrate (101); a plurality of bow-shaped voltage sampling springs (103) in contact with the electrodes (202), with support legs provided at both ends for connecting to the metal contacts (106); and an insulating bracket (102) supporting a cylindrical battery string, respectively connected to the first surface and the second surface of the substrate (101).

2. A battery collection assembly based on direct measurement of bow-shaped spring electrodes according to claim 1, characterized in that: It includes a temperature measurement chip (104) electrically connected to a metal contact (106) or a voltage sampling reed (103).

3. A battery collection assembly based on direct measurement of bow-shaped spring electrodes according to claim 1 or 2, characterized in that: The substrate (101) is a strip-shaped plate, on which a printed circuit is provided, connecting the metal contact (106) with the data acquisition interface (105), and the data acquisition interface (105) is provided at an edge of a first surface of the substrate (101) close to a short side.

4. A battery collection assembly based on direct measurement of bow-shaped spring electrodes according to claim 1 or 2, characterized in that: The voltage sampling spring (103) comprises a contact portion. When the contact portion is in contact with the electrode of the cylindrical battery, the surface away from the substrate (101) is bent into a first arc surface convex toward the substrate (101) and formed by axial translation of an arc line of a minor arc. The contact portion has connecting portions extending in the direction of the substrate (101) on both sides perpendicular to the axial direction and parallel to the substrate (101). The connecting portions are connected to supporting legs. Each voltage sampling spring (103) is connected to a metal contact (106) via the supporting legs.

5. The battery collection assembly based on direct measurement of bow-shaped spring electrodes according to claim 4, characterized in that: The insulating bracket (102) is provided with a through hole for fixing the voltage sampling spring, and a protrusion is provided on both sides of the voltage sampling spring (103) parallel to the axial direction, wherein a third surface of the protrusion away from the substrate (101) is located on a cylindrical surface coaxial with the first arc surface, the third surface is in contact with the side surface of the cylindrical battery (201), and the middle part of the protrusion is concave downward to form a groove.

6. A battery module based on direct measurement of bow-shaped spring electrodes, based on a battery collection component based on direct measurement of bow-shaped spring electrodes according to any one of claims 1 to 5, characterized in that: A plurality of collection components (10) are arranged at equal intervals to form a middle collection layer, and a cylindrical battery string (20) formed by an array of a plurality of cylindrical batteries (201) is provided on the upper and lower sides respectively, and the upper and lower sides of the cylindrical battery string are respectively connected to module cover plates (30), and end face protection plates (40) are provided at both ends of the module cover plates for fixedly connecting the upper and lower module cover plates, and a plurality of insulating brackets (102) are arranged at equal intervals on the module cover plates.

7. A battery module based on direct measurement of bow-shaped spring electrodes according to claim 6, characterized in that: The distance between two adjacent collection components (10) is the axial length of the cylindrical battery (201).

8. The battery module based on direct measurement of bow-shaped spring electrodes according to claim 6, characterized in that: It comprises a computing board (50) having a heat dissipation protection plate (501) and a data processing circuit board (502), wherein the data processing circuit board is provided with a signal interface (503) connected to a data acquisition interface (105).

9. A battery module based on direct measurement of bow-shaped spring electrodes according to claim 8, characterized in that: The data processing circuit board (502) includes an integrated chip for recording and converting cell voltage and temperature data from a data acquisition interface, and the signal interface (503) is connected to a main control communication interface (505) for transmitting the data to an upper-level control unit.

10. A battery module based on direct measurement of bow-shaped spring electrodes according to any one of claims 6 to 9, characterized in that: A plurality of connection holes are provided on the base plate (101) of the collection component. Connecting pieces are provided in the connection holes, and the collection component is fixed via the connecting pieces.

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