Auxiliary charging and discharging device and lithium ion battery module

Abstract

The utility model discloses an auxiliary charging and discharging device, which comprises a first electrode plate, a second electrode plate and a driving circuit, the first electrode plate and the second electrode plate are oppositely arranged at an interval, and an accommodating space for placing a lithium ion battery is enclosed between the first electrode plate and the second electrode plate. By arranging the first electrode plate and the second electrode plate which are connected with the driving circuit, an electric field can be generated between the first electrode plate and the second electrode plate, so that the lithium ion battery arranged in the electric field is influenced, and lithium ions in the lithium ion battery are accelerated to move under the action of electric field force; therefore, the charging and discharging efficiency of the lithium ion battery is improved, and the requirements of users on different charging and discharging efficiencies under different conditions are met. In addition, the utility model further discloses a lithium ion battery module.

Description

Technical Field

[0001] The utility model relates to the field of lithium-ion battery auxiliary equipment, in particular to an auxiliary charging and discharging device and a lithium-ion battery module. Background Art

[0002] With the rapid development of portable electronic products, rechargeable batteries have become essential energy storage devices, and lithium-ion batteries have found important applications in a variety of fields. Lithium-ion batteries are not only widely used in electronic products such as mobile phones and cameras, but have also achieved breakthroughs in areas such as new energy vehicles. However, this also leads to increasingly higher requirements for lithium-ion batteries.

[0003] Currently, the charge and discharge mechanism of lithium-ion batteries is as follows: during charging, Li+ "escapes" from the positive electrode material and then "embeds" into the atomic spaces of the negative electrode material through the electrolyte separator. The discharge process is the opposite. Because of this, the charging speed of existing lithium-ion batteries is generally only related to the positive electrode, negative electrode, and electrolyte materials. In other words, once the battery is manufactured, the battery's charge and discharge capacity is determined and cannot be increased. If a higher charge and discharge rate is required, the battery must be replaced. Utility Model Content

[0004] The main purpose of the utility model is to provide an auxiliary charging and discharging device, aiming to solve the problem of how to improve the charging and discharging efficiency of lithium-ion batteries.

[0005] To achieve the above objectives, the present invention provides an auxiliary charge and discharge device, which includes:

[0006] a first electrode plate;

[0007] a second electrode plate, wherein the first electrode plate and the second electrode plate are spaced apart and arranged opposite to each other, and the first electrode plate and the second electrode plate enclose a space for placing a lithium-ion battery;

[0008] A driving circuit, wherein two ends of the driving circuit are electrically connected to the first electrode plate and the second electrode plate respectively, for applying a first potential and a second potential greater than or less than the first potential to the first electrode plate and the second electrode plate respectively.

[0009] In some embodiments, the first electrode plate and the second electrode plate are spaced apart and arranged in parallel; and / or,

[0010] The first electrode plate and the second electrode plate have the same size.

[0011] In some embodiments, the auxiliary charge and discharge device further includes a bracket, the first electrode plate, the second electrode plate, and the drive circuit are all mounted on the bracket, and the first electrode plate and the second electrode plate are spaced apart from each other on the bracket.

[0012] In some embodiments, the bracket has a connection structure for detachably connecting the lithium-ion battery.

[0013] In some embodiments, the first electrode plate and / or the second electrode plate are slidably connected to the bracket to adjust the distance between the first electrode plate and the second electrode plate; and / or,

[0014] The bracket is provided with a positive electrode interface and a negative electrode interface, and the positive electrode interface and the negative electrode interface are used to be electrically connected to the positive and negative electrodes of the lithium-ion battery respectively.

[0015] In some embodiments, the potential difference between the first potential and the second potential applied by the driving circuit to the first electrode plate and the second electrode plate is greater than 0V and less than 640V.

[0016] The utility model also discloses a lithium-ion battery module, comprising the auxiliary charge and discharge device described in the aforementioned embodiment and a lithium-ion battery arranged in the accommodating space.

[0017] In some embodiments, the lithium-ion battery includes a housing and a battery cell disposed in the housing; the battery cell includes an anode sheet, a cathode sheet, and a separator, and the separator is disposed between the anode sheet and the cathode sheet;

[0018] One of the anode sheet and the cathode sheet is disposed adjacent to the first electrode plate, and the other is disposed adjacent to the second electrode plate.

[0019] In some embodiments, the battery cell further comprises at least one current collector, wherein the current collector comprises an insulating layer, an anode conductive layer, and a cathode conductive layer;

[0020] The anode conductive layer is provided on the side of the insulating layer facing the cathode sheet, and the cathode conductive layer is provided on the side of the insulating layer facing the anode sheet;

[0021] The at least one current collector is disposed between the anode sheet and the cathode sheet, the separator is disposed between the anode sheet and the adjacent current collector, and the separator is disposed between the cathode sheet and the adjacent current collector.

[0022] In some embodiments, the number of the current collectors is at least two, the separator is disposed between any two adjacent current collectors, and the anode conductive layer of one current collector faces the cathode conductive layer of the other current collector.

[0023] The utility model provides a first electrode plate and a second electrode plate connected to a driving circuit, so that an electric field can be generated between the first electrode plate and the second electrode plate, thereby affecting a lithium-ion battery placed in the electric field, so that the lithium ions in the lithium-ion battery are accelerated to move under the action of the electric field force, thereby improving the charging and discharging efficiency of the lithium-ion battery to meet the user's needs for different charging and discharging efficiencies in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of an embodiment of a lithium-ion battery module of the present invention;

[0025] Figure 2 This is a schematic structural diagram of the current collector in the lithium-ion battery module of the present invention.

[0026] Reference numerals:

[0027] 100, first electrode plate; 200, second electrode plate; 300, bracket; 400, lithium-ion battery; 410, housing; 420, battery cell; 421, anode sheet; 422, cathode sheet; 423, current collector; 423a, insulating layer; 423b, anode conductive layer; 423c, anode active material layer; 423d, cathode conductive layer; 423e, cathode active material layer. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the schemes in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0031] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0032] The utility model proposes an auxiliary charging and discharging device, referring to Figure 1 , the auxiliary charge and discharge device comprises:

[0033] a first electrode plate 100;

[0034] The second electrode plate 200 is disposed opposite to the first electrode plate 100 and the second electrode plate 200, and the first electrode plate 100 and the second electrode plate 200 enclose a space for placing the lithium-ion battery 400;

[0035] The driving circuit has two ends electrically connected to the first electrode plate 100 and the second electrode plate 200 respectively, so as to apply a first potential and a second potential greater than or less than the first potential to the first electrode plate 100 and the second electrode plate 200 respectively.

[0036] For example, during use, a high potential is applied to the first electrode plate 100 and a low potential is applied to the second electrode plate 200 by a driving circuit to form an electric field directed from the first electrode plate 100 to the second electrode plate 200; at this time, if the lithium-ion battery 400 placed between the first electrode plate 100 and the second electrode plate 200 is in a charging state and the lithium ions move in a direction that is the same as or similar to the direction of the electric field, the lithium ions move faster under the action of the electric field force, thereby improving the charging efficiency of the lithium-ion battery 400. It is understandable that if the lithium-ion battery 400 is in a discharging state, it is only necessary to make the driving circuit apply a low potential to the first electrode plate 100 and a high potential to the second electrode plate 200.

[0037] Among them, the first electrode plate 100 and the second electrode plate 200 are usually two mutually insulated flat plates. They can be metal plates, such as aluminum plates, copper plates or stainless steel plates, or they can be plates made of other conductive materials, such as graphite, carbon nanotubes, indium tin oxide, etc. When there is a potential difference between the two plates, an electric field will be generated between the two plates. The driving circuit is usually a DC power supply, and its positive and negative poles can be directly connected to the first electrode plate 100 and the second electrode plate 200; or the voltage can be increased by a boost converter before connection. Furthermore, a potentiometer circuit can be provided to facilitate the user to manually adjust the output voltage of the DC power supply.

[0038] The present invention provides a first electrode plate 100 and a second electrode plate 200 connected to a drive circuit, so that an electric field can be generated between the first electrode plate 100 and the second electrode plate 200, thereby affecting the lithium-ion battery 400 placed in the electric field, so that the lithium ions in the lithium-ion battery 400 are accelerated under the action of the electric field force, thereby achieving an improvement in the charging and discharging efficiency of the lithium-ion battery 400 to meet the user's needs for different charging and discharging efficiency in different situations.

[0039] like Figure 1 As shown, in some embodiments, the first electrode plate 100 and the second electrode plate 200 are arranged in parallel with each other; and / or,

[0040] The first electrode plate 100 and the second electrode plate 200 have the same size.

[0041] By providing the first electrode plate 100 and the second electrode plate 200 of the same size and being parallel, a sufficiently uniform electric field can be generated between them, thereby maximizing the mobility of lithium ions in the lithium-ion battery 400 and preventing their displacement. Furthermore, by making the first electrode plate 100 and the second electrode plate 200 larger than the size of the lithium-ion battery 400, the electric field can completely cover the entire lithium-ion battery 400, increasing the range of the lithium ion placement area, reducing the probability of insignificant acceleration effects due to misplacement, and avoiding uneven electric fields at the edges of the electrode plates.

[0042] like Figure 1 As shown, in some embodiments, the auxiliary charge and discharge device further includes a bracket 300 , and the first electrode plate 100 , the second electrode plate 200 , and the driving circuit are all installed on the bracket 300 , and the first electrode plate 100 and the second electrode plate 200 are spaced apart from each other on the bracket 300 .

[0043] The bracket 300 is used to fix the first electrode plate 100, the second electrode plate 200 and the driving circuit to prevent them from shifting during use and affecting the acceleration effect on the lithium-ion battery 400. Exemplarily, the bracket 300 can be a rectangular frame structure, which is made of metal, alloy or high-strength plastic to provide a rigid frame to provide stable support, which is lighter and easier to carry; the bracket 300 can also be in the form of a base, and the first electrode plate 100 and the second electrode plate 200 can be set on the side of the base, or a support member can be set on the base to fix the first electrode plate 100 and the second electrode plate 200, so that the fixation is more secure. It is understandable that other types of brackets 300 can also be used, and the present invention is not limited to this.

[0044] In some embodiments, the bracket 300 has a connection structure for detachably connecting the lithium-ion battery 400 .

[0045] The connection structure is removably connected to the lithium-ion battery 400, allowing users to choose whether to improve the charging and discharging efficiency of the lithium-ion battery 400 as needed. Generally, users can directly connect the lithium-ion battery 400 to power devices. However, if there is an urgent need, such as needing to charge a camera but time is limited, the connection structure can be used to connect the lithium-ion battery 400 and activate the auxiliary re-discharging device to improve the charging efficiency of the lithium-ion battery 400.

[0046] Specifically, the connection structure can be a common spring clip structure to clamp the lithium-ion battery 400; it can also be an ordinary slot, and the shape of the slot is set to match the shape of the lithium-ion battery 400 so that the lithium-ion battery 400 can be plugged into the bracket 300; corresponding buckles and slots can also be set on the lithium-ion battery 400 and the bracket 300 to achieve the detachable lithium-ion battery 400 through the buckle connection.

[0047] In some embodiments, the first electrode plate 100 and / or the second electrode plate 200 are slidably connected to the bracket 300 to adjust the distance between the first electrode plate 100 and the second electrode plate 200; and / or,

[0048] The bracket 300 is provided with a positive electrode interface and a negative electrode interface, and the positive electrode interface and the negative electrode interface are used to electrically connect to the positive and negative electrodes of the lithium-ion battery 400 respectively.

[0049] Specifically, take the slidable connection between the first electrode plate 100 and the bracket 300 as an example.

[0050] Example 1:

[0051] Parallel slide rails are installed on the bracket 300, and sliders are installed on the edge of the first electrode plate 100. The sliders can slide along the slide rails to adjust the distance between the electrode plates. It has high stability and accuracy and can smoothly adjust the position of the electrode plates.

[0052] Example 2:

[0053] A screw is mounted on the bracket 300, and the first electrode plate 100 is connected to the screw via a nut. Rotating the screw can move the nut and the electrode plate on the bracket 300. The screw and nut engage slowly and in a controlled manner, allowing for more precise adjustment of the spacing between the first electrode plate 100 and the second electrode plate 200.

[0054] Example 3:

[0055] A slot is defined on the bracket 300, and a protrusion is provided on the first electrode plate 100 that mates with the slot. The protrusion is secured within the slot using a fixing bolt, thereby securing the first electrode plate 100. Loosening the bolt allows the plate to be slid and adjusted. This connection method offers a simple structure and low cost, and after securing, the first electrode plate 100 remains in a more stable position.

[0056] It is understandable that other common sliding connection methods applicable to the present invention are also within the scope of protection of the present invention. The sliding connection between the second electrode plate 200 and the bracket 300 is also similar to the above embodiment and will not be repeated here.

[0057] The positive electrode interface includes a positive input terminal and a positive output terminal. The positive input terminal can be connected to the positive electrode of the lithium-ion battery 400, and the positive output terminal can be connected to an electrical device. The negative electrode interface includes a negative input terminal and a negative output terminal. The negative input terminal can be connected to the negative electrode of the lithium-ion battery 400, and the negative output terminal can be connected to an electrical device. By providing the positive and negative electrode interfaces, charging equipment or electrical devices can be directly connected to the lithium-ion battery 400 through the positive and negative electrode interfaces, making charging and discharging operations of the lithium-ion battery 400 more convenient and faster.

[0058] Preferably, multiple positive and negative interfaces can be provided, and each pair of positive and negative interfaces uses a different transmission protocol, so that the lithium-ion battery 400 can be used to power various types of electrical devices.

[0059] In some embodiments, the potential difference between the first potential and the second potential applied by the driving circuit to the first electrode plate 100 and the second electrode plate 200 is greater than 0V and less than 640V.

[0060] The driving circuit provides a suitable voltage so that the electric field between the first electrode plate 100 and the second electrode plate 200 is maintained within a suitable intensity to accelerate the movement of lithium ions.

[0061] Furthermore, the actual factor affecting charging efficiency is the electric field strength. According to the experimental data below, the electric field strength between the first electrode plate 100 and the second electrode plate 200 ranges from 250 V / m to 32,000 V / m. It is understood that the distance between the first electrode plate 100 and the second electrode plate 200 can be controlled to increase the potential difference to more than 640 V, simply by maintaining the electric field strength within the aforementioned range.

[0062] The present invention further proposes a lithium-ion battery 400 module comprising a lithium-ion battery 400 and an auxiliary charge and discharge device. Figure 1 The specific structure of the auxiliary charge-discharge device is similar to that of the above-mentioned embodiments. Since the present lithium-ion battery module 400 utilizes all the technical solutions of all the above-mentioned embodiments, it at least has all the technical effects brought about by the technical solutions of the above-mentioned embodiments, and no further details will be given here. Specifically, the lithium-ion battery 400 is disposed within the accommodation space, so that the auxiliary charge-discharge device can accelerate the charge and discharge of the lithium-ion battery 400.

[0063] like Figure 1 As shown, in some embodiments, the lithium-ion battery 400 includes a housing 410 and a battery cell 420 disposed in the housing 410; the battery cell 420 includes an anode sheet 421, a cathode sheet 422, and a separator, and the separator is disposed between the anode sheet 421 and the cathode sheet 422;

[0064] One of the anode plate 421 and the cathode plate 422 is disposed adjacent to the first electrode plate 100 , and the other is disposed adjacent to the second electrode plate 200 .

[0065] The outer shell 410 can be a commonly used battery shell such as an aluminum-plastic film or a steel shell; the diaphragm is located between the anode sheet 421 and the cathode sheet 422 to prevent them from direct contact and short circuit, while allowing electrolyte ions (such as lithium ions) to move freely between the anode sheet 421 and the cathode sheet 422.

[0066] When the lithium-ion battery 400 is charging, lithium ions are released from the cathode plate 422 and flow toward the anode plate 421. At this time, the potential difference between the first electrode plate 100 and the second electrode plate 200 is controlled so that the direction of the electric field is the same as the direction of lithium ion movement, thereby accelerating the charging of the lithium-ion battery 400. The discharge process is similar and will not be repeated here.

[0067] Preferably, the anode plate 421 and the cathode plate 422 are parallel to the first electrode plate 100 and the second electrode plate 200 , so as to maximize the effect of the auxiliary charge and discharge device on improving the charge and discharge efficiency of the lithium-ion battery 400 .

[0068] like Figure 1 and Figure 2As shown, in some embodiments, the battery cell 420 further includes at least one current collector 423, and the current collector 423 includes an insulating layer 423a, an anode conductive layer 423b, and a cathode conductive layer 423d;

[0069] The anode conductive layer 423b is disposed on the side of the insulating layer 423a facing the cathode sheet 422, and the cathode conductive layer 423d is disposed on the side of the insulating layer 423a facing the anode sheet 421;

[0070] At least one current collector 423 is disposed between the anode sheet 421 and the cathode sheet 422 . A separator is disposed between the anode sheet 421 and the adjacent current collector 423 , and a separator is disposed between the cathode sheet 422 and the adjacent current collector 423 .

[0071] An anode active material layer 423c is typically provided on the anode conductive layer 423b, and a cathode active material layer 423e is typically provided on the cathode conductive layer 423d to achieve the storage and release of electrical energy. When the lithium-ion battery is charging, lithium ions are released from the cathode active material layer 423e and flow to the anode active material layer 423c, or from the cathode active material layer 423e and flow to the anode sheet 421. When the lithium-ion battery 400 is discharging, lithium ions are released from the anode sheet 421 and flow to the cathode active material layer 423e, or from the anode active material layer 423c and flow to the cathode sheet 422. The insulating layer 423a is used to prevent lithium ions from flowing between the anode active material layer 423c and the cathode active material layer 423e.

[0072] Compared with ordinary laminated cells or bipolar current collector winding structures, since the same active material is coated on both sides of the current collector in the laminated cell, the direction of movement of lithium ions during charging and discharging is bound to be opposite and cannot be accelerated; and for the bipolar current collector winding structure, since the direction of the current collector changes during the winding process, the direction of movement of lithium ions will also change accordingly and cannot be accelerated by the electric field. This embodiment uses a bipolar current collector 423 to make a cell in a stacked manner, so that the direction of movement of lithium ions in the lithium-ion battery remains the same, which is suitable for the auxiliary charge and discharge device in this application. And adding at least one current collector 423 makes the capacity of the lithium-ion battery 400 larger, can store more electrical energy, avoid frequent charging and discharging, and meet the user's demand for power.

[0073] like Figure 1 and Figure 2 As shown, in some embodiments, the number of current collectors 423 is at least two, a separator is provided between any two adjacent current collectors 423 , and the anode conductive layer 423 b of one current collector 423 faces the cathode conductive layer 423 d of the other current collector 423 .

[0074] When the number of current collectors 423 is at least two, the two adjacent current collectors 423 should be controlled so that the anode conductive layer 423b of one current collector 423 faces the cathode conductive layer 423d of the other current collector 423, so that the movement direction of lithium ions in the entire battery cell 420 remains the same, thereby maximizing the effect of the auxiliary charge and discharge device on improving the charge and discharge efficiency.

[0075] Experimental Procedure: The distance between the first electrode plate 100 and the second electrode plate 200 was controlled to be 0.02m. Several lithium-ion batteries 400 of the present embodiment and conventional laminated batteries of the same capacity were prepared. The lithium-ion batteries 400 included a housing 410 and a cell 420 disposed within the housing 410. The cell 420 included a current collector 423. Conventional laminated batteries used copper and aluminum foil as current collectors.

[0076] The battery is placed between the first electrode plate 100 and the second electrode plate 200, and the driving circuit provides different voltages and uses the same charging method to charge the battery.

[0077] The experimental data are as follows:

[0078]

[0079] Among them, conventional laminated batteries are used in Comparative Examples 1 and 2, and lithium-ion batteries 400 in the embodiments of the present application are used in Comparative Example 3 and Examples 1-10. It can be seen from the experimental data that within a certain range, the greater the potential difference between the first electrode plate 100 and the second electrode plate 200, the shorter the charging time and the higher the charging efficiency; but if the potential difference is too large, for example, when it is above 640V, it is easy to cause the lithium-ion battery 400 to swell and bulge, and damage the active material inside the lithium-ion battery 400. As can be seen from Comparative Example 2, since the electric field generated between the first electrode plate 100 and the second electrode plate 200 only accelerates the movement of half of the lithium ions and decelerates the other half, in conventional laminated batteries, some of the pole pieces will be full and the other part of the pole pieces cannot be embedded with lithium. Therefore, conventional laminated batteries cannot be accelerated by the auxiliary charge and discharge device in this application.

[0080] The above description is only part or preferred embodiments of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. An auxiliary charge and discharge device, characterized in that: include: a first electrode plate; a second electrode plate, wherein the first electrode plate and the second electrode plate are spaced apart and arranged opposite to each other, and the first electrode plate and the second electrode plate enclose a space for placing a lithium-ion battery; A driving circuit, wherein two ends of the driving circuit are electrically connected to the first electrode plate and the second electrode plate respectively, for applying a first potential and a second potential greater than or less than the first potential to the first electrode plate and the second electrode plate respectively.

2. The auxiliary charge and discharge device according to claim 1, characterized in that: The first electrode plate and the second electrode plate are arranged in parallel with each other; and / or, The first electrode plate and the second electrode plate have the same size.

3. The auxiliary charge and discharge device according to claim 1 or 2, characterized in that: The auxiliary charge and discharge device further includes a bracket, the first electrode plate, the second electrode plate, and a drive circuit are all mounted on the bracket, and the first electrode plate and the second electrode plate are spaced apart from each other on the bracket.

4. The auxiliary charge and discharge device according to claim 3, characterized in that: The bracket has a connecting structure, and the connecting structure is used for detachably connecting the lithium-ion battery.

5. The auxiliary charge and discharge device according to claim 3, characterized in that: The first electrode plate and / or the second electrode plate are slidably connected to the bracket to adjust the distance between the first electrode plate and the second electrode plate; and / or, The bracket is provided with a positive electrode interface and a negative electrode interface, and the positive electrode interface and the negative electrode interface are used to be electrically connected to the positive and negative electrodes of the lithium-ion battery respectively.

6. The auxiliary charge and discharge device according to claim 1 or 2, characterized in that: The potential difference between the first potential and the second potential applied by the driving circuit to the first electrode plate and the second electrode plate is greater than 0V and less than 640V.

7. A lithium-ion battery module, characterized in that: It comprises the auxiliary charge and discharge device according to any one of claims 1 to 6 and a lithium-ion battery arranged in the accommodating space.

8. The lithium-ion battery module according to claim 7, characterized in that: The lithium-ion battery comprises a housing and a battery cell disposed in the housing; the battery cell comprises an anode sheet, a cathode sheet and a diaphragm, and the diaphragm is disposed between the anode sheet and the cathode sheet; One of the anode sheet and the cathode sheet is disposed adjacent to the first electrode plate, and the other is disposed adjacent to the second electrode plate.

9. The lithium-ion battery module according to claim 8, characterized in that: The battery core further comprises at least one current collector, wherein the current collector comprises an insulating layer, an anode conductive layer and a cathode conductive layer; The anode conductive layer is provided on the side of the insulating layer facing the cathode sheet, and the cathode conductive layer is provided on the side of the insulating layer facing the anode sheet; The at least one current collector is disposed between the anode sheet and the cathode sheet, the separator is disposed between the anode sheet and the adjacent current collector, and the separator is disposed between the cathode sheet and the adjacent current collector.

10. The lithium-ion battery module according to claim 9, characterized in that: The number of the current collectors is at least two, the separator is provided between any two adjacent current collectors, and the anode conductive layer of one current collector faces the cathode conductive layer of the other current collector.

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