Signal acquisition assembly, installation method and battery module with signal acquisition assembly

Abstract

The invention relates to the technical field of new energy, in particular to a signal acquisition assembly, an installation method and a battery module with the signal acquisition assembly. The signal acquisition assembly comprises a conductive sheet used for being electrically connected to an electrode terminal of a battery cell; the PCB is welded and fixed with the conducting strip, and the PCB is provided with a temperature sensor, a first bonding pad which is electrically connected with the temperature sensor and is used for welding a temperature acquisition line, and a second bonding pad which is electrically connected with the conducting strip and is used for welding a voltage acquisition line; and the shell shields the first bonding pad and the second bonding pad so as to perform insulation protection on the first bonding pad and the second bonding pad.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a signal acquisition component and an installation method, and a battery module having the signal acquisition component. Background Art

[0002] At present, new energy battery modules and battery packs have a large number of signal acquisition terminal assemblies, which are generally directly installed on the surface of the conductive bar (usually aluminum bar) welded to the battery pole. The signal acquisition terminal assembly can be used to collect the voltage and / or temperature of the battery.

[0003] Since there are many types of signal acquisition terminal components, the appearance consistency is poor. In addition, the conductors on the signal acquisition terminal components are exposed in the box space, so there is a hidden danger of insulation. In addition, the body of the signal acquisition terminal component is small in size and densely covered with electronic components, so it is impossible to identify the information of the product (i.e., the signal acquisition terminal component), such as the product production date, batch, storage time, supplier of electronic materials, and mounting processor. When there is a problem with the product batch, it is difficult to trace the relevant information, making it difficult to minimize the scope of the fault and be most accurate. Summary of the invention

[0004] In view of this, in order to solve at least one of the above technical problems, the present application proposes a signal acquisition component and an installation method, and a battery module having the signal acquisition component.

[0005] In a first aspect, the present application proposes a signal acquisition component for acquiring the voltage and temperature of a battery cell in a battery module, the signal acquisition component comprising:

[0006] A conductive sheet, used to be electrically connected to the electrode terminal of the battery cell;

[0007] A PCB board is welded and fixed to the conductive sheet, and the PCB board is provided with: a temperature sensor, a first pad electrically connected to the temperature sensor for welding a temperature acquisition line, and a second pad electrically connected to the conductive sheet for welding a voltage acquisition line;

[0008] The shell shields the first soldering pad and the second soldering pad to insulate and protect the first soldering pad and the second soldering pad.

[0009] In some possible implementations, the conductive sheet is used to be welded to a conductive bar electrically connected to an electrode terminal of the battery cell, the conductive sheet has a latching protrusion, and the conductive bar has a latching groove for the latching protrusion to latch into.

[0010] In some possible implementations, the clamping protrusion defines a back groove with an opening facing the back groove opposite to the protruding direction of the clamping protrusion, and the housing includes a cover, and the cover is mounted to the signal acquisition component in a manner of moving toward the back groove;

[0011] The cover has an insert tongue, and when the cover is installed to the signal acquisition component in a manner of moving toward the back groove, the insert tongue is inserted into the back groove with interference fit, thereby causing the latching protrusion to deform to squeeze the latching groove.

[0012] In some possible implementations, the housing further includes:

[0013] A base, fixed to the PCB board;

[0014] A clamping structure is provided on the base and the cover and has a clamping state and a releasing state, wherein the clamping structure in the clamping state engages the cover with the base;

[0015] The locking structure is configured to be converted from the release state to the locking state by moving the cover toward the back groove.

[0016] In some possible implementations, the clamping structure includes:

[0017] A first clamping edge is formed on the base and has a guiding inclined surface;

[0018] A second clamping edge is formed on the cover;

[0019] Wherein, when the cover moves toward the back groove, after the second clamping edge climbs over the first clamping edge via the guiding slope in a manner that the cover is elastically deformed, the cover recovers the deformation to make the second clamping edge engage with the first clamping edge.

[0020] In some possible implementations, the base has two vertical edges that are higher than the PCB board and located on opposite sides of the PCB board, and a protective glue covering the PCB board is filled between the two vertical edges. Preferably, a gap extending to the conductive bar is formed between the vertical edges and the outer edge of the PCB board, and a portion of the protective glue is filled in the gap to fix the base, the PCB board and the conductive bar to each other.

[0021] In some possible implementations, the clamping structure and the plug tongue are respectively arranged at opposite ends of the signal acquisition component;

[0022] Preferably, a mark uniquely corresponding to the signal acquisition component is formed on the shell.

[0023] In some possible implementations, the clamping protrusion is a bent portion integrally formed on the conductive sheet, and the bent portion includes a first folding arm and a second folding arm separated from each other, and a third folding arm connecting the first folding arm to the second folding arm;

[0024] The inserting tongue is sandwiched between the first folding arm and the second folding arm. Since the inserting tongue is inserted into the back groove with interference fit, the first folding arm and the second folding arm abut against the inner wall of the slot in a manner of moving away from each other.

[0025] In a second aspect, the present application proposes a battery module, comprising:

[0026] A battery cell having electrode terminals;

[0027] A conductive bar, electrically connected to the electrode terminal and thermally coupled to the battery cell in a manner of being welded to the electrode terminal;

[0028] A signal acquisition component as described in the first aspect.

[0029] In a third aspect, the present application further proposes a method for installing the signal acquisition component as described in the first aspect to a battery module, the method comprising:

[0030] Insert the card protrusion into the card slot;

[0031] Welding the conductive sheet and the conductive bar;

[0032] When the inserting tongue is aligned with the back groove, the cover is installed to the signal acquisition component in a manner of moving toward the back groove, so that the inserting tongue is inserted into the back groove with interference fit, and the latching protrusion is deformed to squeeze the latching groove.

[0033] The signal acquisition component provided by the present application includes: a conductive sheet, which is used to be electrically connected to the electrode terminal of the battery cell; a PCB board, which is welded and fixed to the conductive sheet, and the PCB board is provided with: a temperature sensor, a first pad electrically connected to the temperature sensor for welding a temperature acquisition line, and a second pad electrically connected to the conductive sheet for welding a voltage acquisition line; a housing, which shields at least a portion of the conductive sheet and the PCB board to insulate and protect the conductive sheet and the PCB board. In this way, it is possible to avoid the first pad or the second pad on the PCB board being contacted by an external conductor to cause a short circuit or other electrical accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0035] Figure 1 It is a partial schematic diagram of a battery module provided in one embodiment of the present application.

[0036] Figure 2 yes Figure 1 Magnified view of the X section.

[0037] Figure 3 yes Figure 1 Schematic diagram of the side view of the signal acquisition component in the figure.

[0038] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the signal acquisition component.

[0039] Figure 5 yes Figure 4 Schematic diagram of the structure of the signal acquisition component after the shell is removed.

[0040] Figure 6 yes Figure 5 Exploded schematic diagram of the structure shown.

[0041] Figure 7 yes Figure 6 Schematic diagram of the top view of the middle base.

[0042] Figure 8 yes Figure 4 Schematic diagram of the coordination between the middle base and the PCB board.

[0043] Fig. 9 yes Figure 4 A three-dimensional schematic diagram of the middle cover.

[0044] Description of reference numerals:

[0045] 1-battery cell, 11-electrode terminal;

[0046] 2-conductive bar, 21-card slot;

[0047] 3-conductive sheet, 31-clamping protrusion, 31A-first folding arm, 31B-second folding arm, 31C-third folding arm, 32-back groove;

[0048] 4-PCB board, 41-first soldering pad, 42-second soldering pad;

[0049] 5- Temperature sensor;

[0050] 6-housing, 61-base, 61A-standing edge, 61B-first edge, 61B1-guide slope, 62-cover, 62A-insertion tongue, 62B-second edge;

[0051] 7- Gap. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described below in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application. It can be understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0053] In the description of this application, if there are terms such as "first", "second", etc., they are only used to distinguish the objects described and do not have any order or technical meaning. Therefore, an object defined as "first", "second", etc. may explicitly or implicitly include one or more of the objects. In addition, "one" or "a" and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one, and "multiple" means no less than two.

[0054] In the description of this specification, reference to "one embodiment" or "some embodiments" etc. means that one or more embodiments of the present application include a specific feature, structure or characteristic described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0055] Figure 1 A partial side view schematic diagram of a battery module provided in an embodiment of the present application (wherein the battery cell 1 and the electrode terminal 11 thereon are in cross-section). The battery module includes a battery cell 1, a conductive bar 2 and a signal acquisition component. Among them, the battery cell 1 has an electrode terminal 11, and the conductive bar 2 is electrically connected to the electrode cell by welding to the electrode terminal 11, and based on the welding of the conductive bar 2 and the electrode terminal 11, the conductive bar 2 is also thermally coupled to the battery cell 1, more specifically, the electrode terminal 11. The conductive bar 2 can connect adjacent battery cells 1 in series or / and in parallel. For example, one conductive bar 2 is respectively welded to the positive terminal of the first battery cell and the negative terminal of the second battery cell to connect the first battery cell and the second battery cell in series, and another conductive bar is welded to the positive terminal of the second battery cell and the negative terminal of the third battery cell to connect the second battery cell and the third battery cell in series. Then, by measuring the voltage between the two conductive bars 2, the terminal voltage of the second battery cell can be known.

[0056] In other embodiments, the conductive bar 2 is not only thermally coupled to the electrode terminal 11 of the battery cell 1 in the above-mentioned manner, but also in close contact with the outer shell of the battery cell 1, thereby increasing the thermal conductivity area of ​​the conductive bar 2 and the battery cell 1, so that heat can be transferred more quickly between the battery cell 1 and the conductive bar 2.

[0057] The conductive bar 2 can be an aluminum bar or a copper bar.

[0058] Figures 3 to 9 Indicated Figure 1 The structure of the signal acquisition component is used to collect the voltage and temperature of the battery cell 1, and includes a conductive sheet 3, a PCB board 4 (Printed Circuit Board), a temperature sensor 5 and a housing 6.

[0059] The conductive sheet 3 may be a nickel sheet, which has excellent electrical and thermal conductivity. Figures 1 to 3 In practice, the conductive sheet 3 can be welded to the conductive bar 2, thereby indirectly realizing electrical connection and thermal conductivity coupling between the conductive sheet 3 and the battery cell 1 via the conductive bar 2. In this way, the conductive sheet 3 can collect voltage signals from the battery electrode terminals 11 on the one hand, and obtain heat from the battery cell 1 on the other hand and transfer it to the temperature sensor 5 via the PCB board 4 (this will be described in more detail later).

[0060] The PCB board 4 is welded and fixed to the conductive bar 2, and the temperature sensor 5 is thermally conductively mounted on the PCB board 4. In addition, two first pads 41 and a second pad 42 separated from each other are provided on the PCB board 4. The two first pads 41 are electrically connected to the two poles of the temperature sensor 5 via two conductive traces on the PCB board 4, respectively, and the second pad 42 is electrically connected to the conductive sheet 3 via conductive vias and other conductive traces on the PCB board 4. Among them, the first pad 41 is used to weld the temperature acquisition line to transmit the temperature signal collected by the temperature sensor 5 to the battery management system BMS through the temperature acquisition line, and the second pad 42 is used to weld the voltage acquisition line to transmit the voltage signal collected by the conductive sheet 3 to the battery management system BMS through the voltage acquisition line. The temperature acquisition line and the voltage acquisition line can be ordinary plastic copper wires or integrated FPC wires, which are not limited in the embodiments of the present application.

[0061] The housing 6 is made of insulating plastic material, which at least shields the first pad 41 and the second pad 42 from above to insulate and protect the first pad 41 and the second pad 42. Specifically in this embodiment, the housing 6 is used to weld the first pad 41 and the second pad 42 to which the temperature acquisition line and the voltage acquisition line have been welded - after the first pad 41 and the second pad 42 are welded to the temperature acquisition line and the voltage acquisition line, the housing 6 is completely assembled to the signal acquisition component. In this way, it is possible to avoid the first pad 41 or the second pad 42 being contacted by an external conductor to cause a short circuit or other conductive accidents.

[0062] The temperature sensor 5 can be an NTC thermistor. When working, the NTC thermistor has a corresponding resistance value based on the temperature of the environment in which it is located. The battery management system BMS can obtain the current resistance value of the NTC thermistor via the temperature acquisition line welded to the first pad 41, and determine the NTC thermistor based on the current resistance value and thereby determine the current temperature of the battery cell 1.

[0063] The PCB board 4 is generally rectangular, with a width of no more than 1.5 cm and a length of no more than 2.0 cm. A portion of the conductive sheet 3 is soldered to the PCB board 4, and another portion extends from the PCB board 4 and has a longer dimension.

[0064] The PCB board 4 is fixed to the conductive sheet 3 by welding.

[0065] In addition, the conductive sheet 3 has a locking protrusion 31 protruding toward the conductive bar 2, and the conductive bar 2 has a locking groove 21 at a corresponding position, and the locking protrusion 31 is locked into the locking groove 21. In this way, in the process of assembling the signal acquisition component to the conductive bar 2, the locking protrusion 31 of the conductive sheet 3 can be first locked into the locking groove 21 of the conductive bar 2, and then the conductive sheet 3 and the conductive bar 2 are welded. As a result, on the one hand, the pre-welding position of the conductive sheet 3 on the conductive bar 2 can be quickly found and positioned by means of the locking of the locking protrusion 31 and the locking groove 21, and the conductive sheet 3 can be prevented from accidentally detaching from the conductive bar 2 when the conductive sheet 3 and the conductive bar 2 are welded in the subsequent sequence. On the other hand, the locking of the locking protrusion 31 and the locking groove 21 also helps to increase the conductive area of ​​the conductive sheet 3 and the conductive bar 2, thereby reducing the connection resistance of the conductive sheet 3 and the conductive bar 2, especially when the surface of the locking protrusion 31 and the groove wall of the locking groove 21 elastically abut each other over a large area.

[0066] The clamping protrusion 31 is a U-shaped bending portion formed by bending the conductive sheet 3 (for example, by punching with a punching die), and the conductive sheet 3 with the clamping protrusion 31 is an integral structure. The U-shaped bending portion, i.e., the clamping protrusion 31, includes a first folding arm 31A and a second folding arm 31B separated from each other, and a third folding arm 31C connecting the first folding arm 31A to the second folding arm 31B, and the first folding arm 31A, the third folding arm 31C and the second folding arm 31B are terminated in sequence. When the clamping protrusion 31 is inserted into the clamping slot 21 of the conductive bar 2, the first folding arm 31A and the second folding arm 31B contact the lateral inner wall of the clamping slot 21.

[0067] In this embodiment, the slot 21 is a through slot (or through hole) that penetrates the conductive bar 2 in the thickness direction of the conductive bar 2. The through slot is opposite to the electrode terminal 11 of the battery cell 1. The protrusion 31 of the conductive sheet 3 is inserted into the through slot and abuts against the electrode terminal 11. In this way, the protrusion 31 of the conductive sheet 3 is in direct electrical and thermal contact with the electrode terminal 11, which helps to further reduce the connection resistance and thermal resistance from the electrode terminal 11 to the conductive sheet 3. In other embodiments, the slot 21 is a non-through slot that does not penetrate the conductive bar 2 and has a slot bottom.

[0068] Please see again Figure 2 Combined with Figures 3 to 5 The protrusion 31 formed by the bent portion defines a back groove 32 located at the back side of the protrusion 31, and the opening of the back groove 32 faces away from the protruding direction of the protrusion 31. Specifically, the back groove 32 is defined by the first folding arm 31A, the second folding arm 31B and the third folding arm 31C.

[0069] The housing 6 includes a base 61 and a cover 62 which are manufactured separately, and the base 61 is fixed to the PCB board 4. A snap-fit ​​structure is provided on the base 61 and the cover 62, and the base 61 and the cover 62 are engaged with each other through the snap-fit ​​structure, thereby realizing the installation of the cover 62 on the signal acquisition component. Specifically, the base 61 can be pre-clipped and glued to the outer edge of the PCB board 4, and the cover 62 is installed to the signal acquisition component in a manner of moving toward the back groove 32 and also toward the base 61. In this way, before installing the cover 62, the temperature acquisition line and the voltage acquisition line can be welded to the first pad 41 and the second pad 42 of the PCB board 4, so as to avoid insufficient operating space for the aforementioned welding caused by the installation of the cover 62.

[0070] The aforementioned snap-fit ​​structure has a snap-fit ​​state and a release state, and can be converted without loss between the snap-fit ​​state and the release state. In the snap-fit ​​state, the snap-fit ​​structure engages the cover 62 with the base 61; in the release state, the cover 62 and the base 61 can be separated.

[0071] Specifically, the clamping structure includes a first clamping edge 61B formed on the base 61 and a second clamping edge 62B formed on the cover 62, wherein the first clamping edge 61B has a guiding slope 61B1. When the cover 62 moves toward the back groove 32 and the base 61, the second clamping edge 62B first contacts the guiding slope 61B1 of the first clamping edge 61B and bears the reaction force applied by the guiding slope 61B1 to the second clamping edge 62B. Under the influence of the reaction force, the cover 62 generates elastic deformation and based on the deformation, the second clamping edge 62B crawls along the guiding slope 61B1. When the second clamping edge 62B crawls over the first clamping edge 61B through the guiding slope 61B1 in a manner that the cover 62 generates elastic deformation, the aforementioned force disappears, so the cover 62 recovers its deformation, thereby causing the second clamping edge 62B to be clamped with the first clamping edge 61B-the second clamping edge 62B is clamped to the back side of the first clamping edge 61B, and the clamping structure is converted to a clamping state.

[0072] As can be seen from the above description, the engaging structure of the housing 6 is configured to be converted from a released state to an engaged state by moving the cover 62 toward the back groove 32 .

[0073] The cover 62 has an inserting tongue 62A extending along the protruding direction of the clamping protrusion 31. When the cover 62 is installed to the signal acquisition component in a manner of moving toward the back slot 32, the inserting tongue 62A is inserted into the back slot 32 with interference fit, thereby causing the clamping protrusion 31 to deform to squeeze the clamping slot 21. Specifically, after the inserting tongue 62A is inserted into the back slot 32, it is clamped between the first folding arm 31A and the second folding arm 31B. The inserting tongue 62A applies a force to the first folding arm 31A and the second folding arm 31B to move them away from each other. Under this force, the first folding arm 31A and the second folding arm 31B abut against the inner wall of the clamping slot 21 in a state of moving away from each other, thereby improving the bonding strength between the clamping protrusion 31 and the clamping slot 21, and helping to enhance the electrical conductivity and thermal conductivity of the conductive sheet 3 and the conductive bar 2.

[0074] In addition, the base 61 has two vertical edges 61A that are higher than the PCB board 4 and located on opposite sides of the PCB board 4, and between the two vertical edges 61A is filled with protective glue that covers 62 the PCB board 4, especially the temperature sensor 5 on the PCB board 4. Usually, it is necessary to apply glue to the welding parts of the components to prevent the welding parts from being oxidized by isolating oxygen. However, after applying glue, the glue will flow around due to the effect of gravity. The vertical edges 61A on the base 61 that are higher than the PCB board 4 can effectively control the applied insulating protective glue within a specified range without overflowing, and it is easy to control the height of the glue layer.

[0075] Also, see Figure 8 Combined with Figure 1 and Figure 6, the vertical edge 61A of the base 61 is separated from the outer edge of the PCB board 4 by a certain distance, so that a gap 7 extending to the conductive bar 2 is formed between the vertical edge 61A and the PCB board 4. The aforementioned protective glue is an adhesive with a gluing function, and a part of the protective glue is filled in the gap 7 (contacting and solidifying with the vertical edge 61A, the PCB board 4 and the conductive bar 2) to fix the base 61, the PCB board 4 and the conductive bar 2 to each other. With this structure, the base 61, the PCB board 4 and the conductive bar 2 are cleverly fixed to each other, and the pulling force acting on the signal acquisition line (the voltage acquisition line and the temperature acquisition line welded to the first pad 41 and the second pad 42) is finally borne by the conductive bar 2, so as to prevent the PCB board 4 from being loosened or even detached from the conductive sheet 3 under the aforementioned pulling force.

[0076] In this embodiment, the aforementioned snap-fit ​​structure and the plug tongue 62A are respectively arranged at opposite ends of the signal acquisition component. In this way, the cover 62 is respectively fixed to the signal acquisition component at its two ends, which helps to enhance the stability of the installation position of the cover 62 on the signal acquisition component and prevent the cover 62 from accidentally falling off during use.

[0077] In other embodiments, the inserting tongue 62A on the cover 62 does not have an interference fit with the back groove 32 of the conductive sheet 3 . In this case, the back groove 32 of the conductive sheet 3 mainly serves to guide and locate the installation position of the cover 62 .

[0078] In some embodiments, a mark with product information can be formed on the housing 6 by printing or laser irradiation, so that the operator can obtain the product information of the signal acquisition component through the mark. Exemplarily, the mark can include a QR code that uniquely corresponds to the signal acquisition component.

[0079] In addition, the embodiment of the present application also provides a method for installing the signal acquisition component of the above structure to a battery module, the method comprising:

[0080] Step 1: Insert the protrusion 31 of the conductive sheet 3 into the slot 21 of the conductive bar 2;

[0081] Step 2: Weld the conductive sheet 3 and the conductive bar 2 using a laser welding process;

[0082] Step 3: With the insert tongue 62A aligned with the back groove 32 , the cover 62 is installed to the signal acquisition assembly in a manner of moving toward the back groove 32 , so that the insert tongue 62A is inserted into the back groove 32 with interference fit, and the latch protrusion 31 is deformed to squeeze the latch groove 21 .

Claims

1. A signal acquisition component for collecting the voltage and temperature of a battery cell in a battery module, characterized in that: The signal acquisition component comprises: A conductive sheet, used to be electrically connected to the electrode terminal of the battery cell; A PCB board is welded and fixed to the conductive sheet, and the PCB board is provided with: a temperature sensor, a first pad electrically connected to the temperature sensor for welding a temperature acquisition line, and a second pad electrically connected to the conductive sheet for welding a voltage acquisition line; The shell shields the first soldering pad and the second soldering pad to insulate and protect the first soldering pad and the second soldering pad.

2. The signal acquisition component according to claim 1, characterized in that: The conductive sheet is used to be welded to a conductive bar electrically connected to the electrode terminal of the battery cell. The conductive sheet has a locking protrusion, and the conductive bar has a locking groove for the locking protrusion to be locked into.

3. The signal acquisition component according to claim 2, characterized in that: The clamping protrusion defines a back groove with an opening facing the back groove opposite to the protruding direction of the clamping protrusion, and the housing includes a cover, and the cover is mounted to the signal acquisition component in a manner of moving toward the back groove; The cover has an insert tongue, and when the cover is installed to the signal acquisition component in a manner of moving toward the back groove, the insert tongue is inserted into the back groove with interference fit, thereby causing the latching protrusion to deform to squeeze the latching groove.

4. The signal acquisition component according to claim 3, characterized in that: The housing further comprises: A base, fixed to the PCB board; A clamping structure is provided on the base and the cover and has a clamping state and a releasing state, wherein the clamping structure in the clamping state engages the cover with the base; The locking structure is configured to be converted from the release state to the locking state by moving the cover toward the back groove.

5. The signal acquisition component according to claim 4, characterized in that: The clamping structure comprises: A first clamping edge is formed on the base and has a guiding inclined surface; A second clamping edge is formed on the cover; Wherein, when the cover moves toward the back groove, after the second clamping edge climbs over the first clamping edge via the guiding slope in a manner that the cover is elastically deformed, the cover recovers the deformation to make the second clamping edge engage with the first clamping edge.

6. The signal acquisition component according to claim 4, characterized in that: The base has two vertical edges that are higher than the PCB board and located at two opposite sides of the PCB board, and a protective glue covering the PCB board is filled between the two vertical edges; Preferably, a gap extending to the conductive bar is formed between the vertical edge and the outer edge of the PCB board, and a portion of the protective glue is filled in the gap to fixedly connect the base, the PCB board and the conductive bar to each other.

7. The signal acquisition component according to claim 4, characterized in that: The clamping structure and the plug tongue are respectively arranged at two opposite ends of the signal acquisition component; Preferably, a mark uniquely corresponding to the signal acquisition component is formed on the shell.

8. The signal acquisition component according to claim 4, characterized in that: The clamping protrusion is a bending portion integrally formed on the conductive sheet, and the bending portion includes a first folding arm and a second folding arm separated from each other, and a third folding arm connecting the first folding arm to the second folding arm; The inserting tongue is sandwiched between the first folding arm and the second folding arm. Since the inserting tongue is inserted into the back groove with interference fit, the first folding arm and the second folding arm abut against the inner wall of the slot in a manner of moving away from each other.

9. A battery module, characterized in that: include: A battery cell having electrode terminals; A conductive bar, electrically connected to the electrode terminal and thermally coupled to the battery cell in a manner of being welded to the electrode terminal; It is characterized in that the battery module also includes a signal acquisition component as described in any one of claims 1 to 8.

10. A method for installing a signal acquisition component to a battery module, characterized in that: The signal acquisition component is a signal acquisition component as claimed in any one of claims 3 to 8, the battery module comprises a battery cell having an electrode terminal and a conductive bar welded to the electrode terminal, and the method comprises: Insert the card protrusion into the card slot; Welding the conductive sheet and the conductive bar; When the inserting tongue is aligned with the back groove, the cover is installed to the signal acquisition component in a manner of moving toward the back groove, so that the inserting tongue is inserted into the back groove with interference fit, and the latching protrusion is deformed to squeeze the latching groove.

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