Battery module sampling device

Abstract

The utility model discloses a battery module sampling device, comprising a CCS main body and a switching wire harness, the CCS main body is provided with a switching wire harness jack, two ends of the switching wire harness are provided with connecting plugs, the connecting plugs at two ends are respectively connected with the switching wire harness jack and a BMS slave controller, the switching wire harness is also provided with at least one wired NTC, and the NTC is connected with the switching wire harness jack and the BMS slave controller. The wired NTC comprises an NTC thermistor and an NTC connecting wire harness, the CCS main body is connected with the wired NTC in a plugging manner, and the CCS main body is connected with the wired NTC only by arranging a fixed patch harness socket, so that the universality of the CCS main body is improved, and meanwhile, welding connection is avoided, and the situation that the voltage withstanding performance of a welding part and the periphery of the welding part cannot reach the expectation due to welding is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, in particular to a battery module sampling device. Background Art

[0002] In the battery pack, BMS (battery management system) is the housekeeper, ensuring the safe, reliable and efficient use of the battery pack during its life cycle. CCS components (cell signal acquisition components) are the basis for implementing BMS management. CCS components are usually fixed to the battery module and electrically connected to the battery module. In order to ensure that the battery pack can operate within the specified voltage range and temperature range, the CCS component needs to collect voltage signals, temperature signals, current signals and other signals from the battery module composed of multiple cell series and parallel components, and transmit the collected signals to BMS to control and manage the operation of the battery pack. Among them, the temperature signal is usually collected by thermistors. Thermistors are a type of sensor resistor whose resistance value changes with temperature. According to the temperature coefficient, they are divided into positive temperature coefficient thermistors (PTC) and negative temperature coefficient thermistors (NTC). The resistance value of a positive temperature coefficient thermistor increases with the increase of temperature, and the resistance value of a negative temperature coefficient thermistor decreases with the increase of temperature. They are both semiconductor devices.

[0003] In the prior art, NTC thermistors are often used for temperature collection. NTCs are often installed on CCS components by welding. For example, patent CN116937083A discloses a welding structure of an NTC integrated module, which discloses that welding areas for laser or ultrasonic friction welding are reserved at both ends of the NTC integrated module, one end of which is laser welded to the corresponding area of ​​the FFC or FPC or PCB circuit board on the CCS, and the other end is laser welded or ultrasonic friction welded to the corresponding aluminum bar. However, when the NTC is welded on the CCS, it is easy for the pressure resistance performance of the welding point on the CCS to fail to meet expectations, and the distribution and quantity requirements of the temperature sampling points in different battery packs are different, so that the number and position of welding points on different CCSs are also different, which is not conducive to improving the versatility of the CCS. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background technology and provide a battery module sampling device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A battery module sampling device comprises a CCS body and an adapter harness. The CCS body is provided with an adapter harness socket, and connecting plugs are provided at both ends of the adapter harness. The connecting plugs at both ends are respectively connected to the adapter harness socket and the BMS slave control. The adapter harness is also provided with at least one NTC with a wire, and the NTC with a wire comprises an NTC thermistor and an NTC connecting harness.

[0007] In some embodiments of the present invention, the strip-wire NTC is installed on a battery module.

[0008] In some embodiments of the present invention, the number of the NTC with wires is at least two, the NTC connection harness is merged into the slave acquisition harness, and the slave acquisition harness is connected to the adapter harness.

[0009] In some embodiments of the present invention, the CCS body is arranged on the top of the battery module.

[0010] In certain embodiments of the present invention, the number of the strip-wire NTCs is two, one strip-wire NTC is installed at the positive electrode of the battery module, and the other strip-wire NTC is installed at the negative electrode of the battery module.

[0011] In certain embodiments of the present invention, the battery module includes a plurality of battery cells, and the NTC with a wire is arranged between two adjacent battery cells.

[0012] In some embodiments of the present invention, connectors are provided on both sides of the CCS body, and mounting holes are formed on the connectors.

[0013] In some embodiments of the present invention, the CCS body is mounted on a support frame via a connector, and the support frame is mounted on the battery module.

[0014] In some embodiments of the present invention, a marking QR code is provided on the front of the CCS body.

[0015] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The CCS body is connected to the NTC with wires by plugging, avoiding connection through welding, and also avoiding the situation where the pressure resistance performance of the welding point and its surroundings cannot meet the expectations due to welding, reducing the risk of design failure, which is conducive to ensuring the safety of CCS products.

[0017] 2. Gather several NTCs with wires on the adapter harness, and then insert the adapter harness into the CCS body through the connecting plug, so that the CCS body only needs to be provided with a fixed adapter harness socket. When used in different battery packs, only the corresponding adapter harness with the corresponding number of NTCs with wires needs to be replaced, which improves the versatility of the CCS body, is conducive to shortening the R&D cycle of CCS finished products, and reducing its production cost.

[0018] 3. A QR code is set on the front of the CCS body to ensure accurate query of CCS product information and to facilitate process recording of the production, storage and use of the battery module sampling device and battery modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the utility model;

[0022] Description of main reference numerals:

[0023] 1. CCS body, 10. Adapter harness socket, 11. Connector, 12. Mounting hole, 13. Mark QR code, 2. Adapter harness, 20. Connecting plug, 3. NTC with wire, 30. NTC thermistor, 31. NTC connecting harness, 4. Slave acquisition harness, 5. BMS slave control, 6. Battery module, 60. Positive pole, 61. Negative pole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0026] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the invention.

[0027] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0028] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0029] Example 1, see Figure 1-2 :

[0030] A battery module sampling device comprises a CCS body 1 and an adapter harness, wherein the CCS body 1 is provided with an adapter harness socket 10, and connecting plugs 20 are provided at both ends of the adapter harness 2. The connecting plug 20 at one end of the adapter harness 2 is plugged into the harness socket 10 of the CCS body 1. The adapter harness 2 is also provided with at least one NTC 3 with a wire, so that the NTC with a wire does not need to be directly welded to the CCS, and the traditional connection method of connecting the NTC with a wire and the CCS body by welding is avoided, so that there is no welding area at this connection, and no glue treatment is required, so that the welding caused by the welding is avoided. The situation of poor pressure resistance at the welding point is avoided, which is conducive to the CCS body 1 passing the pressure resistance test; at the same time, the CCS body 1 only needs to be provided with one harness socket 10. When used in different battery packs, only the corresponding adapter harness with a corresponding number of NTCs with a wire needs to be replaced, thereby improving the versatility of the CCS body 1 and reducing the production cost.

[0031] The strip line NTC3 includes an NTC thermistor 30 and an NTC connection harness 31. The NTC thermistor 30 is used for temperature acquisition to obtain temperature acquisition data. The connection plug 20 at the other end of the adapter harness 2 is connected to the BMS slave control 5. The BMS slave control 5 is electrically connected to the BMS battery management system. The temperature acquisition data obtained by the NTC thermistor 30 is transmitted to the BMS slave control 5 through the NTC connection harness 31 and the adapter harness 2.

[0032] As an implementation mode, the NTC with wire 3 and the adapter harness 2 are an integrated structure. For different battery pack products, only the corresponding NTC with wire and the adapter harness need to be replaced.

[0033] As an embodiment, the strip-wire NTC 3 is installed on the battery module 6, and the CCS body 1 is arranged on the top of the battery module 6 for easy installation.

[0034] As an embodiment, the number of the strip-line NTC 3 is at least two, and a plurality of NTC connection harnesses 31 converge into a slave acquisition harness 4 , and the slave acquisition harness 4 is connected to the adapter harness 2 .

[0035] As an embodiment, one NTC3 with a wire is installed at the positive pole 60 of the battery module 6 to detect and collect the temperature of the positive pole of the battery module 6, and the other NTC3 with a wire is installed at the negative pole 61 of the battery module 6 to detect and collect the temperature of the negative pole of the battery module 6.

[0036] As an embodiment, the battery module 6 includes a plurality of battery cells, and the strip line NTC3 is arranged between two adjacent battery cells, so that the strip line NTC3 can be regularly arranged in the battery module for detecting the temperature condition in the battery module, so that the temperature sampling effect is good, which is conducive to controlling the temperature inside the battery module 6.

[0037] As an embodiment, preferably, several strip-wire NTC3 are provided, wherein any two strip-wire NTC3 are installed at the positive pole 60 and the negative pole 61 of the battery module 6, and the remaining strip-wire NTC3 are installed between two adjacent battery cells in the battery module 6, which is beneficial to detect and collect the overall temperature of the battery module 6.

[0038] As an implementation mode, preferably, a battery module sampling device described in this embodiment is applied to a battery module of an energy storage device. The sizes of individual battery cells in the battery module are almost the same. When the number of battery cells connected in series in the battery module is the same, the CCS main board can actually be shared. However, different manufacturers have different requirements for the distribution of temperature sampling points in other areas of the battery pack. The use of the battery module sampling device described in this embodiment improves the versatility of the CCS main body and reduces production costs.

[0039] Embodiment 2:

[0040] Example 1 is repeated, but connectors 11 are provided on both sides of the CCS body 1, and the connectors 11 are formed with mounting holes 12. The CCS body 1 is installed through the mounting holes 12 and screws, which facilitates the installation of the CCS body 1. As an embodiment, the CCS body 1 is installed on a support frame through the connectors 11, and the support frame is mounted on the battery module.

[0041] Embodiment 3:

[0042] Example 1 is repeated, but a marking QR code 13 is provided on the front of the CCS body 1. The marking QR code 13 adopts a QR code electronic tag for digital management, which ensures accurate query of product information and records the entire process of production, storage, installation and use of the battery module 6 sampling device, which is conducive to realizing closed-loop management of the entire life cycle of the product.

[0043] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A battery module sampling device, characterized in that: The CCS body includes a CCS body and a transfer harness. The CCS body is provided with a transfer harness socket. Both ends of the transfer harness are provided with connecting plugs. The connecting plugs at both ends are respectively connected to the transfer harness socket and the BMS slave control. The transfer harness is also provided with at least one NTC with a wire. The NTC with a wire includes an NTC thermistor and an NTC connecting harness.

2. A battery module sampling device according to claim 1, characterized in that: The strip-wire NTC is mounted on the battery module.

3. A battery module sampling device according to claim 2, characterized in that: The number of the NTC with wires is at least two, and the NTC connection harness is merged into the slave acquisition harness, and the slave acquisition harness is connected to the adapter harness.

4. A battery module sampling device according to claim 3, characterized in that: The CCS body is arranged on the top of the battery module.

5. A battery module sampling device according to claim 3, characterized in that: There are two NTC strips, one of which is installed at the positive electrode of the battery module, and the other is installed at the negative electrode of the battery module.

6. A battery module sampling device according to claim 3, characterized in that: The battery module includes a plurality of battery cells, and the strip-line NTC is arranged between two adjacent battery cells.

7. A battery module sampling device according to claim 2, characterized in that: Connecting pieces are arranged on both sides of the CCS body, and mounting holes are formed on the connecting pieces.

8. A battery module sampling device according to claim 7, characterized in that: The CCS body is mounted on a support frame through a connector, and the support frame is mounted on the battery module.

9. A battery module sampling device according to any one of claims 1 to 8, characterized in that: A marking QR code is arranged on the front of the CCS body.

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